Zone Forecast Product
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
159 FPUS55 KPSR 201716 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 1016 AM MST Thu Aug 20 2026 This is an automatically generated product that provides average values for large geographical areas and may not be representative of the exact location that you are interested in. For a more site specific forecast, please visit weather.gov/phoenix and either (1) Select a location from the dropdown menu above the map or (2) Click a location on the map. You can refine your selection by clicking on the map displayed on the resulting page. AZZ537-540-542>544-546-548-550-551-202300- Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix- North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Sun Lakes, and Queen Creek 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Highs 103 to 107. West wind 5 to 10 mph. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Much warmer. Lows 82 to 89. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 107 to 111. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 82 to 89. Southwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .SATURDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 107 to 111. East wind around 5 mph in the morning becoming west in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 84 to 91. .SUNDAY...Partly sunny and hot. Highs 106 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 82 to 88. .MONDAY...Partly sunny and hot. Highs 106 to 110. .MONDAY NIGHT...Partly cloudy. Lows 82 to 88. .TUESDAY...Partly sunny and hot. Highs 107 to 112. .TUESDAY NIGHT...Mostly clear. Lows 84 to 90. .WEDNESDAY...Partly sunny and hot. Highs 108 to 113. $$ AZZ541-549-555-202300- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Highs 102 to 107. West wind 5 to 10 mph. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 75 to 85. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 105 to 110. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 75 to 85. South wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 106 to 111. East wind 5 to 10 mph in the morning becoming west in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 81 to 87. .SUNDAY...Partly sunny. A 10 percent chance of showers and thunderstorms in the morning. Highs 105 to 109. .SUNDAY NIGHT...Partly cloudy. Lows 80 to 86. .MONDAY...Partly sunny. Highs 105 to 109. .MONDAY NIGHT...Partly cloudy. Lows 80 to 86. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 107 to 111. .TUESDAY NIGHT...Mostly clear. Lows 81 to 87. .WEDNESDAY...Partly sunny and hot. Highs 106 to 112. $$ AZZ553-554-202300- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Highs 103 to 108. Southwest wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 76 to 86. North wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 106 to 111. East wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 76 to 86. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. Chance of rain 10 percent. .SATURDAY...Mostly sunny and hot. Highs 107 to 112. East wind around 5 mph in the morning becoming northwest in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 80 to 88. .SUNDAY...Partly sunny and hot. Highs 105 to 111. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 80 to 87. .MONDAY...Partly sunny and hot. Highs 104 to 110. .MONDAY NIGHT...Partly cloudy. Lows 79 to 87. .TUESDAY...Partly sunny and hot. Highs 106 to 112. .TUESDAY NIGHT...Mostly clear. Lows 81 to 88. .WEDNESDAY...Mostly sunny and hot. Highs 106 to 112. $$ AZZ532-202300- Yuma- Including the cities of Yuma and Fortuna Foothills 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs near 111. South wind 5 to 15 mph. .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 84 to 85. South wind 5 to 10 mph in the evening becoming southeast after midnight. .FRIDAY...Mostly sunny and hot. Highs near 112. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 86 to 87. Southwest wind 5 to 10 mph in the evening becoming light after midnight. .SATURDAY...Mostly sunny and hot. Highs near 113. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows near 90. .SUNDAY...Partly sunny with a 20 percent chance of showers and thunderstorms. Hot. Highs 108 to 111. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 80s. .MONDAY...Mostly sunny and hot. Highs 108 to 111. .MONDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .TUESDAY...Mostly sunny and hot. Highs 111 to 113. .TUESDAY NIGHT...Mostly clear. Lows near 90. .WEDNESDAY...Mostly sunny and hot. Highs 110 to 113. $$ AZZ562-202300- Globe/Miami- Including the cities of Globe and Miami 1016 AM MST Thu Aug 20 2026 .TODAY...Partly sunny in the morning, then mostly sunny with a slight chance of afternoon showers and thunderstorms. Highs 89 to 99. Northwest wind 5 to 10 mph. Chance of rain 10 percent. .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 66 to 76. North wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning, then mostly sunny with a slight chance of afternoon showers and thunderstorms. Highs 93 to 103. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. Chance of rain 10 percent. .FRIDAY NIGHT...Partly cloudy. Lows 66 to 76. West wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .SATURDAY...Mostly sunny. Highs 92 to 102. East wind around 5 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid to upper 70s. .SUNDAY...Mostly sunny. Highs 98 to 102. .SUNDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows in the mid to upper 70s. .MONDAY...Partly sunny. Highs 97 to 103. .MONDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .TUESDAY...Partly sunny. A 20 percent chance of afternoon showers and thunderstorms. Highs 99 to 103. .TUESDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .WEDNESDAY...Partly sunny. Highs 99 to 105. $$ AZZ545-547-552-556>558-561-202300- New River Mesa-Rio Verde/Salt River-Superior-Tonto Basin- Mazatzal Mountains-Pinal/Superstition Mountains-Dripping Springs- Including the cities of Tortilla Flat, Superior, Punkin Center, Sunflower, Hayden, and Winkelman 1016 AM MST Thu Aug 20 2026 .TODAY...Partly sunny in the morning, then sunny with a slight chance of afternoon showers and thunderstorms. Highs 99 to 104. West wind 5 to 10 mph. Chance of rain 10 percent. .TONIGHT...Considerable cloudiness with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Warmer. Lows 73 to 83. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming sunny. Warmer. Highs 104 to 109. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 73 to 83. Southwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny. Highs 104 to 109. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 70 to 85. .SUNDAY...Partly sunny. Highs 93 to 109. .SUNDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 69 to 84. .MONDAY...Partly sunny. Highs 92 to 108. .MONDAY NIGHT...Partly cloudy. Lows 69 to 84. .TUESDAY...Partly sunny and hot. Highs 94 to 110. .TUESDAY NIGHT...Mostly clear. Lows 71 to 86. .WEDNESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 94 to 110. $$ AZZ560-202300- San Carlos- Including the cities of San Carlos and Peridot 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny. A slight chance of afternoon showers and thunderstorms. Highs 95 to 105. Southwest wind 5 to 10 mph. Chance of rain 20 percent. .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 67 to 77. Northwest wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming mostly sunny. Highs 97 to 107. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 68 to 78. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny. Highs 97 to 107. East wind around 5 mph in the morning becoming south 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows in the mid to upper 70s. .SUNDAY...Mostly sunny. Highs 101 to 107. .SUNDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows in the mid to upper 70s. .MONDAY...Partly sunny. Highs 101 to 107. .MONDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .TUESDAY...Partly sunny. Highs 103 to 109. .TUESDAY NIGHT...Partly cloudy. Lows near 80. .WEDNESDAY...Partly sunny in the morning then becoming sunny. Highs 103 to 109. $$ AZZ563-202300- Southeast Gila County- 1016 AM MST Thu Aug 20 2026 .TODAY...Partly cloudy. A chance of afternoon showers and thunderstorms. Highs 88 to 98. West wind 5 to 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 66 to 76. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning, then mostly sunny with a slight chance of afternoon showers and thunderstorms. Highs 91 to 101. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. Chance of rain 10 percent. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 66 to 76. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .SATURDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Highs 91 to 101. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. Chance of rain 10 percent. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 59 to 77. .SUNDAY...Mostly sunny. Highs 89 to 101. .SUNDAY NIGHT...Partly cloudy. Lows 59 to 77. .MONDAY...Partly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 89 to 101. .MONDAY NIGHT...Partly cloudy. Lows 59 to 77. .TUESDAY...Partly sunny. Highs 91 to 103. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 79. .WEDNESDAY...Partly sunny. Highs 91 to 103. $$ AZZ539-559-202300- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Hot. Highs 105 to 110. Southwest wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .TONIGHT...Partly cloudy. Lows 77 to 87. North wind around 5 mph in the evening becoming southeast after midnight. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 108 to 113. East wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 79 to 89. South wind around 5 mph. Chance of rain 10 percent. .SATURDAY...Partly sunny and hot. Highs 109 to 114. East wind around 5 mph in the morning becoming northwest in the afternoon. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 83 to 90. .SUNDAY...Partly sunny. A 10 percent chance of showers and thunderstorms in the morning. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 87. .MONDAY...Partly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 103 to 111. .MONDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 81 to 88. .TUESDAY...Partly sunny and hot. Highs 104 to 114. .TUESDAY NIGHT...Mostly clear. Lows 82 to 88. .WEDNESDAY...Partly sunny and hot. Highs 104 to 114. $$ AZZ534-538-202300- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Hot. Highs 105 to 110. South wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 77 to 87. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 108 to 113. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .SATURDAY...Partly sunny and hot. Highs 108 to 113. East wind around 5 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 80 to 88. .SUNDAY...Partly sunny. A 10 percent chance of showers and thunderstorms in the morning. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 78 to 86. .MONDAY...Partly sunny. A 10 percent chance of showers and thunderstorms in the morning. Hot. Highs 103 to 110. .MONDAY NIGHT...Partly cloudy. Lows 79 to 87. .TUESDAY...Partly sunny and hot. Highs 105 to 113. .TUESDAY NIGHT...Mostly clear. Lows 80 to 88. .WEDNESDAY...Partly sunny and hot. Highs 105 to 113. $$ AZZ531-533-202300- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 105 to 110. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .TONIGHT...Partly cloudy. Lows 78 to 88. Southwest wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .FRIDAY...Partly sunny in the morning, then mostly sunny with a slight chance of afternoon showers and thunderstorms. Hot. Highs 107 to 112. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. Chance of rain 10 percent. .FRIDAY NIGHT...Partly cloudy. Lows 77 to 87. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .SATURDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 108 to 113. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 80 to 88. .SUNDAY...Partly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 78 to 86. .MONDAY...Partly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 102 to 110. .MONDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 79 to 87. .TUESDAY...Partly sunny. Hot. Highs 104 to 112. .TUESDAY NIGHT...Mostly clear. Lows 80 to 88. .WEDNESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 104 to 112. $$ AZZ535-536-202300- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 1016 AM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TODAY...Partly sunny in the morning then becoming sunny. Hot. Highs 106 to 111. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .TONIGHT...Partly cloudy. Lows 77 to 87. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .FRIDAY...Mostly sunny and hot. Highs 108 to 113. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 78 to 88. Southwest wind 5 to 10 mph. Chance of rain 10 percent. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms after midnight. Lows 84 to 89. .SUNDAY...Partly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 105 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 82 to 87. .MONDAY...Partly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 106 to 110. .MONDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 82 to 87. .TUESDAY...Partly sunny and hot. Highs 109 to 113. .TUESDAY NIGHT...Mostly clear. Lows 84 to 89. .WEDNESDAY...Partly sunny and hot. Highs 109 to 113. $$ AZZ530-CAZ569-202300- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 1016 AM MST Thu Aug 20 2026 /1016 AM PDT Thu Aug 20 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY... .TODAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 108 to 113. South wind 5 to 15 mph. .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 78 to 88. South wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 109 to 114. South wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 78 to 88. South wind 5 to 10 mph. .SATURDAY...Mostly sunny and very hot. Highs 110 to 115. South wind around 5 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 83 to 89. .SUNDAY...Partly sunny with a 20 percent chance of showers and thunderstorms. Hot. Highs 107 to 113. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 87. .MONDAY...Partly sunny in the morning then becoming sunny. A 10 percent chance of showers and thunderstorms. Hot. Highs 106 to 112. .MONDAY NIGHT...Mostly clear. Lows 81 to 87. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 108 to 114. .TUESDAY NIGHT...Mostly clear. Lows 83 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 114. $$ CAZ565-570-202300- Imperial County Southeast-Chuckwalla Valley- Including the cities of Winterhaven and Midland 1016 AM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TODAY...Partly sunny and hot. Highs 107 to 112. South wind 5 to 10 mph. .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 80 to 90. South wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 108 to 113. South wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 80 to 90. West wind 5 to 10 mph. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. Northwest wind 5 to 10 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 84 to 91. .SUNDAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 105 to 113. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 89. .MONDAY...Mostly sunny. A 10 percent chance of showers in the morning. Hot. Highs 104 to 111. .MONDAY NIGHT...Mostly clear. Lows 82 to 89. .TUESDAY...Mostly sunny and hot. Highs 105 to 113. .TUESDAY NIGHT...Mostly clear. Lows 84 to 91. .WEDNESDAY...Mostly sunny and hot. Highs 105 to 113. $$ CAZ564-568-202300- Chuckwalla Mountains-Chiriaco Summit- Including the cities of Imperial Hot Mineral Springs and Chiriaco Summit 1016 AM PDT Thu Aug 20 2026 .TODAY...Partly sunny. Highs 104 to 109. South wind 5 to 10 mph. .TONIGHT...Mostly clear. Lows 78 to 88. South wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 105 to 110. South wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph. .SATURDAY...Mostly sunny and hot. Highs 106 to 111. North wind around 5 mph in the morning becoming south 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 79 to 88. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 99 to 109. .SUNDAY NIGHT...Partly cloudy. Lows 77 to 86. .MONDAY...Mostly sunny. A 10 percent chance of showers in the morning. Highs 98 to 108. .MONDAY NIGHT...Mostly clear. Lows 78 to 88. .TUESDAY...Mostly sunny and hot. Highs 100 to 110. .TUESDAY NIGHT...Mostly clear. Lows 79 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 100 to 110. $$ CAZ563-202300- Salton Sea- Including the city of Desert Shores 1016 AM PDT Thu Aug 20 2026 .TODAY...Partly sunny and hot. Highs 105 to 110. Southeast wind 5 to 10 mph. .TONIGHT...Mostly clear. Lows 81 to 91. Northwest wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 107 to 112. Southeast wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 81 to 91. West wind 5 to 15 mph. .SATURDAY...Sunny and hot. Highs 107 to 112. West wind 5 to 10 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows near 90. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 101 to 111. .SUNDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .MONDAY...Mostly sunny. Highs 101 to 109. .MONDAY NIGHT...Mostly clear. Lows 86 to 91. .TUESDAY...Sunny and hot. Highs 101 to 111. .TUESDAY NIGHT...Clear. Lows 86 to 92. .WEDNESDAY...Mostly sunny and hot. Highs 101 to 111. $$ CAZ567-202300- Imperial Valley- Including the cities of El Centro, Calexico, Alamorio, and Brawley 1016 AM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TODAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 108 to 113. Southeast wind 5 to 10 mph. .TONIGHT...Mostly clear. Lows 77 to 87. Southwest wind around 5 mph in the evening becoming light after midnight. .FRIDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 109 to 114. Light wind in the morning becoming southwest around 5 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph. .SATURDAY...Sunny and very hot. Highs 110 to 115. West wind around 5 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 108 to 114. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 80s. .MONDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 108 to 112. Chance of rain 10 percent. .MONDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows in the mid to upper 80s. .TUESDAY...Sunny and hot. Highs 110 to 114. .TUESDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .WEDNESDAY...Mostly sunny and hot. Highs 110 to 114. $$ CAZ566-202300- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 1016 AM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TODAY...Partly sunny and hot. Highs 108 to 113. East wind 5 to 10 mph. .TONIGHT...Mostly clear. Lows 80 to 90. Southwest wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Very hot. Highs 110 to 115. Northwest wind around 5 mph in the morning becoming southeast 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 79 to 89. West wind 5 to 15 mph. .SATURDAY...Sunny and very hot. Highs 111 to 116. West wind 5 to 10 mph in the morning becoming southeast in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 85 to 90. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 110 to 114. .SUNDAY NIGHT...Mostly clear. Lows 84 to 89. .MONDAY...Partly sunny with a slight chance of showers in the morning, then sunny with a slight chance of afternoon showers and thunderstorms. Hot. Highs 108 to 112. Chance of rain 20 percent. .MONDAY NIGHT...Mostly clear. Lows 85 to 90. .TUESDAY...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 110 to 114. .TUESDAY NIGHT...Mostly clear. Lows 85 to 90. .WEDNESDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 110 to 114. $$ CAZ562-202300- Imperial County Southwest- Including the city of Mountain Spring 1016 AM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TODAY...Partly sunny and hot. Highs 107 to 112. North wind 5 to 10 mph in the morning becoming east in the afternoon. .TONIGHT...Mostly clear. Lows 82 to 92. Southwest wind 10 to 20 mph. .FRIDAY...Partly sunny. A slight chance of afternoon showers and thunderstorms. Hot. Highs 108 to 113. Southwest wind 10 to 15 mph in the morning becoming southeast 5 to 15 mph in the afternoon. Chance of rain 10 percent. .FRIDAY NIGHT...Mostly clear and breezy. Lows 81 to 91. West wind 10 to 20 mph. Gusts up to 30 mph in the evening. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. Southwest wind 10 to 15 mph in the morning becoming southeast 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 81 to 91. .SUNDAY...Partly sunny. A 20 percent chance of afternoon showers and thunderstorms. Hot. Highs 103 to 113. .SUNDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 81 to 91. .MONDAY...Partly sunny. A slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 101 to 111. Chance of rain 20 percent. .MONDAY NIGHT...Mostly clear. Lows 81 to 91. .TUESDAY...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 103 to 113. .TUESDAY NIGHT...Mostly clear. Lows 82 to 92. .WEDNESDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 103 to 113. $$ CAZ560-561-202300- Joshua Tree NP West-Joshua Tree NP East- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 1016 AM PDT Thu Aug 20 2026 .TODAY...Partly sunny. Highs 97 to 107. South wind 5 to 10 mph. .TONIGHT...Mostly clear. Lows 76 to 86. Southwest wind 5 to 10 mph. .FRIDAY...Partly sunny in the morning then becoming sunny. Highs 98 to 108. South wind around 5 mph in the morning increasing to 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 75 to 85. West wind 5 to 10 mph. .SATURDAY...Mostly sunny. Highs 98 to 108. Northwest wind 5 to 10 mph in the morning becoming south 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 69 to 86. .SUNDAY...Mostly sunny. Highs 91 to 107. .SUNDAY NIGHT...Mostly clear. Lows 69 to 86. .MONDAY...Partly sunny with a 20 percent chance of showers in the morning, then sunny in the afternoon. Highs 91 to 107. .MONDAY NIGHT...Mostly clear. Lows 69 to 85. .TUESDAY...Sunny. Highs 92 to 108. .TUESDAY NIGHT...Mostly clear. Lows 69 to 85. .WEDNESDAY...Mostly sunny. Highs 92 to 108. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix