Zone Forecast Product
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
893 FPUS55 KPSR 202301 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 400 PM 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>544-546-548-550-551-211100- 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 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 80 to 87. North wind 5 to 15 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 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 83 to 91. West wind around 5 mph in the evening becoming east 5 to 10 mph after midnight. .SUNDAY...Partly cloudy. A 10 percent chance of showers in the morning. Hot. Highs 106 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 82 to 88. .MONDAY...Partly sunny and hot. Highs 106 to 111. .MONDAY NIGHT...Partly cloudy. Lows 82 to 89. .TUESDAY...Partly sunny and hot. Highs 109 to 114. .TUESDAY NIGHT...Mostly clear. Lows 84 to 91. .WEDNESDAY...Mostly sunny and hot. Highs 109 to 114. .WEDNESDAY NIGHT...Clear. Lows 85 to 91. .THURSDAY...Mostly sunny and hot. Highs 108 to 113. $$ AZZ541-549-555-211100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 73 to 83. Northeast wind 10 to 15 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny and hot. Highs 105 to 110. East wind 5 to 10 mph in the morning becoming west in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 75 to 85. South wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny and hot. Highs 106 to 111. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows 76 to 86. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. Chance of rain 10 percent. .SUNDAY...Partly sunny and hot. Highs 104 to 110. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 85. .MONDAY...Partly sunny and hot. Highs 106 to 110. .MONDAY NIGHT...Partly cloudy. Lows 79 to 85. .TUESDAY...Partly sunny and hot. Highs 107 to 113. .TUESDAY NIGHT...Mostly clear. Lows 82 to 88. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 112. .WEDNESDAY NIGHT...Mostly clear. Lows 82 to 88. .THURSDAY...Mostly sunny and hot. Highs 107 to 111. $$ AZZ553-554-211100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 74 to 84. Northwest 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 mostly 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. Lows 76 to 86. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .SATURDAY...Mostly sunny and hot. Highs 106 to 111. East wind around 5 mph in the morning becoming northwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows 78 to 88. West wind around 5 mph in the evening becoming southeast 5 to 10 mph after midnight. Chance of rain 10 percent. .SUNDAY...Partly cloudy and hot. Highs 105 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 87. .MONDAY...Partly sunny and hot. Highs 105 to 111. .MONDAY NIGHT...Partly cloudy. Lows 79 to 87. .TUESDAY...Partly sunny and hot. Highs 107 to 113. .TUESDAY NIGHT...Mostly clear. Lows 82 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 114. .WEDNESDAY NIGHT...Mostly clear. Lows 82 to 89. .THURSDAY...Mostly sunny and hot. Highs 107 to 113. $$ AZZ532-211100- Yuma- Including the cities of Yuma and Fortuna Foothills 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 82 to 85. Southwest wind 5 to 15 mph in the evening becoming southeast 5 to 10 mph after midnight. .FRIDAY...Sunny and hot. Highs near 112. South wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 86 to 87. Southwest wind 5 to 10 mph in the evening becoming light after midnight. .SATURDAY...Sunny and hot. Highs near 113. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 86 to 88. South wind 5 to 10 mph. .SUNDAY...Mostly sunny and hot. Highs 109 to 111. .SUNDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .MONDAY...Mostly sunny and hot. Highs 109 to 111. .MONDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .TUESDAY...Mostly sunny and hot. Highs 112 to 114. .TUESDAY NIGHT...Clear. Lows near 90. .WEDNESDAY...Mostly sunny and hot. Highs 112 to 114. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .THURSDAY...Partly sunny and hot. Highs 110 to 113. $$ AZZ562-211100- Globe/Miami- Including the cities of Globe and Miami 400 PM MST Thu Aug 20 2026 .TONIGHT...Considerable cloudiness with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 64 to 74. Northwest wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny. Highs 93 to 103. North wind 5 to 10 mph in the morning becoming west in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. 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 southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 67 to 77. North wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. Chance of rain 20 percent. .SUNDAY...Partly 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 98 to 102. .MONDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .TUESDAY...Partly sunny. Highs 100 to 104. .TUESDAY NIGHT...Mostly clear. Lows in the mid to upper 70s. .WEDNESDAY...Mostly sunny. Highs 101 to 105. .WEDNESDAY NIGHT...Mostly clear. Lows near 80. .THURSDAY...Partly sunny. Highs 101 to 105. $$ AZZ545-547-552-556>558-561-211100- New River Mesa-Rio Verde/Salt River-Superior-Tonto Basin- Mazatzal Mountains-Pinal/Superstition Mountains-Dripping Springs- Including the cities of Tortilla Flat, Superior, Punkin Center, Sunflower, Hayden, and Winkelman 400 PM MST Thu Aug 20 2026 .TONIGHT...Considerable cloudiness with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 72 to 82. Northeast wind 5 to 15 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny and warmer. Highs 104 to 109. Northeast wind 5 to 10 mph in the morning becoming west 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 73 to 83. West wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny. Highs 104 to 109. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows 75 to 85. North wind 5 to 10 mph in the evening becoming northeast after midnight. Chance of rain 10 percent. .SUNDAY...Partly sunny. Highs 92 to 108. .SUNDAY NIGHT...Partly cloudy. Lows 69 to 83. .MONDAY...Partly sunny. Highs 93 to 109. .MONDAY NIGHT...Partly cloudy. Lows 69 to 83. .TUESDAY...Partly sunny and hot. Highs 95 to 111. .TUESDAY NIGHT...Mostly clear. Lows 71 to 86. .WEDNESDAY...Mostly sunny and hot. Highs 96 to 112. .WEDNESDAY NIGHT...Mostly clear. Lows 72 to 86. .THURSDAY...Mostly sunny and hot. Highs 95 to 111. $$ AZZ560-211100- San Carlos- Including the cities of San Carlos and Peridot 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Considerable cloudiness with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 66 to 76. Northwest wind 5 to 15 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny in the morning then becoming partly sunny. Highs 97 to 107. Northeast wind around 5 mph in the morning becoming west 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 north after midnight. .SATURDAY...Mostly sunny. Highs 97 to 107. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 69 to 79. North wind 5 to 10 mph. Chance of rain 10 percent. .SUNDAY...Partly sunny. Highs 101 to 107. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid to upper 70s. .MONDAY...Partly sunny. Highs 102 to 108. .MONDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .TUESDAY...Partly sunny and hot. Highs 104 to 110. .TUESDAY NIGHT...Partly cloudy. Lows near 80. .WEDNESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 105 to 111. .WEDNESDAY NIGHT...Mostly clear. Lows near 80. .THURSDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 104 to 110. $$ AZZ563-211100- Southeast Gila County- 400 PM MST Thu Aug 20 2026 .TONIGHT...Considerable cloudiness. A slight chance of showers and thunderstorms in the evening. Lows 65 to 75. Northeast wind 5 to 15 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny in the morning, then partly sunny with a slight chance of afternoon showers and thunderstorms. Highs 91 to 101. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. Chance of rain 10 percent. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 66 to 76. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .SATURDAY...Mostly sunny, otherwise partly cloudy with a slight chance of afternoon showers and thunderstorms. Highs 91 to 101. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. Chance of rain 10 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 67 to 77. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .SUNDAY...Partly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 89 to 101. .SUNDAY NIGHT...Partly cloudy. Lows 59 to 77. .MONDAY...Partly sunny. Highs 89 to 101. .MONDAY NIGHT...Partly cloudy. Lows 59 to 77. .TUESDAY...Partly sunny. Highs 91 to 103. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 78. .WEDNESDAY...Partly sunny in the morning then becoming sunny. Highs 92 to 104. .WEDNESDAY NIGHT...Partly cloudy. Lows 61 to 79. .THURSDAY...Partly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 91 to 103. $$ AZZ539-559-211100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. Lows 76 to 86. West wind 5 to 10 mph in the evening becoming south after midnight. .FRIDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 108 to 113. West wind 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. 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. A slight chance of showers after midnight. Lows 79 to 89. Southwest wind around 5 mph. Chance of rain 10 percent. .SUNDAY...Partly cloudy. A 20 percent chance of showers in the morning. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 87. .MONDAY...Partly sunny. A 20 percent chance of showers and thunderstorms in the morning. Hot. Highs 103 to 111. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 81 to 87. .TUESDAY...Partly sunny and very hot. Highs 105 to 115. .TUESDAY NIGHT...Mostly clear. Lows 83 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 106 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 89. .THURSDAY...Mostly sunny and hot. Highs 106 to 114. $$ AZZ534-538-211100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 75 to 85. North wind 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 108 to 113. Northeast wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .SATURDAY...Partly sunny in the morning then becoming mostly sunny. Hot. Highs 108 to 113. East wind around 5 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 78 to 88. West wind around 5 mph in the evening becoming north after midnight. .SUNDAY...Partly sunny. A 20 percent chance of showers in the morning. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 78 to 86. .MONDAY...Partly sunny and hot. Highs 103 to 111. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 79 to 87. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 80 to 88. .WEDNESDAY...Mostly sunny and very hot. Highs 107 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 81 to 89. .THURSDAY...Partly sunny and hot. Highs 106 to 114. $$ AZZ531-533-211100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. Lows 76 to 86. West wind 10 to 15 mph in the evening becoming east 5 to 10 mph after midnight. .FRIDAY...Mostly sunny and hot. Highs 107 to 112. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .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 and 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 78 to 88. Southwest wind 5 to 10 mph. .SUNDAY...Partly sunny and hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 87. .MONDAY...Partly sunny and hot. Highs 103 to 111. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 79 to 87. .TUESDAY...Mostly sunny and hot. Highs 105 to 113. .TUESDAY NIGHT...Clear. Lows 81 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 106 to 114. .WEDNESDAY NIGHT...Mostly clear. Lows 82 to 89. .THURSDAY...Partly sunny and hot. Highs 105 to 113. $$ AZZ535-536-211100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 400 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Partly cloudy. Lows 77 to 87. Southwest wind 5 to 10 mph. .FRIDAY...Sunny and hot. Highs 108 to 113. Southwest wind 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 78 to 88. Southwest wind 5 to 10 mph. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. Southwest wind 5 to 10 mph. .SUNDAY...Partly sunny. A slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 105 to 111. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 86. .MONDAY...Mostly sunny and hot. Highs 107 to 111. .MONDAY NIGHT...Mostly clear. Lows 82 to 87. .TUESDAY...Mostly sunny and hot. Highs 110 to 114. .TUESDAY NIGHT...Clear. Lows 84 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 88. .THURSDAY...Partly sunny and hot. Highs 108 to 114. $$ AZZ530-CAZ569-211100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 400 PM MST Thu Aug 20 2026 /400 PM PDT Thu Aug 20 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 77 to 87. South wind 5 to 15 mph. .FRIDAY...Mostly sunny and hot. Highs 109 to 114. South wind 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 78 to 88. Southwest wind 5 to 10 mph. .SATURDAY...Mostly sunny and very hot. Highs 110 to 115. Northwest wind around 5 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. Southwest wind 10 to 15 mph in the evening becoming south around 5 mph after midnight. .SUNDAY...Mostly sunny and hot. Highs 107 to 113. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 87. .MONDAY...Mostly sunny and hot. Highs 106 to 112. .MONDAY NIGHT...Mostly clear. Lows 81 to 87. .TUESDAY...Mostly sunny and very hot. Highs 109 to 115. .TUESDAY NIGHT...Clear. Lows 83 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 89. .THURSDAY...Partly sunny in the morning then becoming sunny. Very hot. Highs 109 to 115. $$ CAZ565-570-211100- Imperial County Southeast-Chuckwalla Valley- Including the cities of Winterhaven and Midland 400 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Mostly clear. Lows 79 to 89. Southwest wind 5 to 10 mph in the evening becoming southeast after midnight. .FRIDAY...Mostly sunny and hot. Highs 108 to 113. Southeast wind around 5 mph in the morning becoming south 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 80 to 90. West wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 109 to 114. Northwest wind 5 to 10 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 80 to 90. West wind 5 to 10 mph. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 105 to 113. .SUNDAY NIGHT...Mostly clear. Lows 81 to 89. .MONDAY...Mostly sunny and hot. Highs 104 to 112. .MONDAY NIGHT...Mostly clear. Lows 81 to 89. .TUESDAY...Mostly sunny and hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 84 to 91. .WEDNESDAY...Mostly sunny and very hot. Highs 107 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 91. .THURSDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 106 to 114. $$ CAZ564-568-211100- Chuckwalla Mountains-Chiriaco Summit- Including the cities of Imperial Hot Mineral Springs and Chiriaco Summit 400 PM PDT Thu Aug 20 2026 .TONIGHT...Mostly clear. Lows 76 to 86. Southwest wind 5 to 10 mph. .FRIDAY...Sunny and hot. Highs 105 to 110. South wind 5 to 15 mph. .FRIDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 106 to 111. North wind around 5 mph in the morning becoming south 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 78 to 88. West wind 5 to 10 mph. .SUNDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Highs 99 to 109. Chance of rain 10 percent. .SUNDAY NIGHT...Mostly clear. Lows 77 to 86. .MONDAY...Mostly sunny. Highs 99 to 109. .MONDAY NIGHT...Mostly clear. Lows 78 to 88. .TUESDAY...Mostly sunny and hot. Highs 101 to 111. .TUESDAY NIGHT...Clear. Lows 80 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 101 to 113. .WEDNESDAY NIGHT...Mostly clear. Lows 79 to 88. .THURSDAY...Partly sunny and hot. Highs 101 to 111. $$ CAZ563-211100- Salton Sea- Including the city of Desert Shores 400 PM PDT Thu Aug 20 2026 .TONIGHT...Clear. Lows 80 to 90. Southwest wind 10 to 15 mph in the evening becoming northwest 5 to 10 mph after midnight. .FRIDAY...Mostly sunny and hot. Highs 107 to 112. Southeast wind 5 to 10 mph. .FRIDAY NIGHT...Clear. Lows 81 to 91. West wind 5 to 15 mph. .SATURDAY...Sunny and hot. Highs 107 to 112. West wind 5 to 10 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 81 to 91. West wind 10 to 15 mph. .SUNDAY...Mostly sunny and hot. Highs 101 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 85 to 90. .MONDAY...Sunny and hot. Highs 100 to 110. .MONDAY NIGHT...Clear. Lows 86 to 91. .TUESDAY...Sunny and hot. Highs 102 to 112. .TUESDAY NIGHT...Clear. Lows 87 to 92. .WEDNESDAY...Mostly sunny and hot. Highs 103 to 113. .WEDNESDAY NIGHT...Mostly clear. Lows 87 to 92. .THURSDAY...Mostly sunny and hot. Highs 102 to 112. $$ CAZ567-211100- Imperial Valley- Including the cities of El Centro, Calexico, Alamorio, and Brawley 400 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Mostly clear. Lows 76 to 86. South wind 5 to 10 mph. .FRIDAY...Mostly sunny and hot. Highs 109 to 114. Light wind in the morning becoming southwest 10 to 15 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. Northwest wind around 5 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Very hot. Highs 109 to 115. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 80s. .MONDAY...Mostly sunny and hot. Highs 108 to 114. .MONDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .TUESDAY...Sunny and very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows in the mid to upper 80s. .WEDNESDAY...Mostly sunny and very hot. Highs 112 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .THURSDAY...Mostly sunny and very hot. Highs 111 to 115. $$ CAZ566-211100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 400 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear. Lows 80 to 90. West wind 5 to 15 mph. .FRIDAY...Mostly sunny and very hot. Highs 110 to 115. Northwest wind 5 to 10 mph in the morning becoming southeast 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 79 to 89. West wind 5 to 15 mph. .SATURDAY...Sunny and very hot. Highs 111 to 116. West wind 5 to 10 mph in the morning becoming southeast in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 79 to 89. West wind 5 to 15 mph. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 110 to 114. .SUNDAY NIGHT...Mostly clear. Lows 84 to 89. .MONDAY...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 108 to 114. .MONDAY NIGHT...Mostly clear. Lows 84 to 89. .TUESDAY...Sunny and very hot. Highs 110 to 116. .TUESDAY NIGHT...Clear. Lows 86 to 91. .WEDNESDAY...Mostly sunny and very hot. Highs 111 to 117. .WEDNESDAY NIGHT...Mostly clear. Lows 86 to 91. .THURSDAY...Mostly sunny and very hot. Highs 111 to 115. $$ CAZ562-211100- Imperial County Southwest- Including the city of Mountain Spring 400 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Mostly clear and breezy. Lows 82 to 92. Southwest wind 10 to 20 mph. Gusts up to 30 mph in the evening. .FRIDAY...Mostly sunny and hot. Highs 108 to 113. South wind 5 to 15 mph. .FRIDAY NIGHT...Mostly clear and breezy. Lows 81 to 91. West wind 10 to 20 mph. Gusts up to 30 mph. .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...Clear and breezy. Lows 81 to 91. Southwest wind 10 to 20 mph. Gusts up to 30 mph. .SUNDAY...Mostly sunny. A 10 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...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 102 to 112. .MONDAY NIGHT...Mostly clear. Lows 81 to 91. .TUESDAY...Sunny and hot. Highs 104 to 114. .TUESDAY NIGHT...Clear. Lows 83 to 93. .WEDNESDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Very hot. Highs 105 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 93. .THURSDAY...Mostly sunny and hot. Highs 104 to 114. $$ CAZ560-561-211100- Joshua Tree NP West-Joshua Tree NP East- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 400 PM PDT Thu Aug 20 2026 .TONIGHT...Mostly clear. Lows 75 to 85. Southwest wind 5 to 15 mph. .FRIDAY...Mostly sunny. Highs 98 to 108. Southwest wind 5 to 15 mph. .FRIDAY NIGHT...Mostly clear. Lows 75 to 85. West wind 5 to 10 mph. .SATURDAY...Sunny. Highs 98 to 108. Northwest wind 5 to 10 mph in the morning becoming south 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 75 to 85. West wind 5 to 10 mph. .SUNDAY...Sunny. Highs 92 to 108. .SUNDAY NIGHT...Mostly clear. Lows 69 to 85. .MONDAY...Sunny. Highs 91 to 107. .MONDAY NIGHT...Clear. Lows 69 to 85. .TUESDAY...Mostly sunny. Highs 93 to 109. .TUESDAY NIGHT...Clear. Lows 71 to 86. .WEDNESDAY...Mostly sunny. Highs 93 to 109. .WEDNESDAY NIGHT...Mostly clear. Lows 70 to 86. .THURSDAY...Mostly sunny. Highs 93 to 109. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix