Zone Forecast Product
Issued by NWS Phoenix, AZ
Issued by NWS Phoenix, AZ
353 FPUS55 KPSR 210631 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 1131 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 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy and much warmer. Lows 82 to 89. West wind 10 to 15 mph in the evening becoming northeast around 5 mph after midnight. .FRIDAY...Sunny and hot. Highs 108 to 112. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 83 to 90. Southwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny and hot. Highs 109 to 113. East wind 5 to 10 mph in the morning becoming west in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 84 to 91. West wind around 5 mph in the evening becoming east after midnight. .SUNDAY...Partly sunny and hot. Highs 107 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 83 to 90. .MONDAY...Partly sunny and hot. Highs 106 to 111. .MONDAY NIGHT...Partly cloudy. Lows 84 to 91. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 109 to 114. .TUESDAY NIGHT...Clear. Lows 85 to 92. .WEDNESDAY...Mostly sunny and hot. Highs 110 to 115. .WEDNESDAY NIGHT...Clear. Lows 84 to 90. .THURSDAY...Mostly sunny and hot. Highs 109 to 114. $$ AZZ541-549-555-211100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy and warmer. Lows 75 to 85. North wind 10 to 15 mph in the evening becoming northeast around 5 mph after midnight. .FRIDAY...Sunny and hot. Highs 106 to 111. East wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 76 to 86. West wind around 5 mph in the evening becoming northeast 5 to 10 mph after midnight. .SATURDAY...Mostly sunny and hot. Highs 108 to 113. East wind 5 to 10 mph in the morning becoming west in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 77 to 87. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SUNDAY...Partly sunny and hot. Highs 105 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 80 to 86. .MONDAY...Partly sunny and hot. Highs 106 to 110. .MONDAY NIGHT...Partly cloudy. Lows 81 to 87. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 108 to 112. .TUESDAY NIGHT...Mostly clear. Lows 82 to 88. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 114. .WEDNESDAY NIGHT...Clear. Lows 82 to 88. .THURSDAY...Mostly sunny and hot. Highs 107 to 113. $$ AZZ553-554-211100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Much warmer. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs 107 to 112. East wind around 5 mph in the morning becoming northwest 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...Sunny and hot. Highs 108 to 113. East wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows 78 to 88. Southwest wind around 5 mph in the evening becoming southeast after midnight. Chance of rain 10 percent. .SUNDAY...Partly sunny and hot. Highs 105 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 80 to 87. .MONDAY...Partly sunny and hot. Highs 105 to 111. .MONDAY NIGHT...Partly cloudy. Lows 80 to 88. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 107 to 113. .TUESDAY NIGHT...Mostly clear. Lows 81 to 89. .WEDNESDAY...Mostly sunny and hot. Highs 108 to 114. .WEDNESDAY NIGHT...Mostly clear. Lows 81 to 89. .THURSDAY...Mostly sunny and hot. Highs 108 to 114. $$ AZZ532-211100- Yuma- Including the cities of Yuma and Fortuna Foothills 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 84 to 86. Southwest wind around 5 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs near 113. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 86 to 87. West wind 5 to 10 mph in the evening becoming light after midnight. .SATURDAY...Sunny and hot. Highs near 114. Northwest wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 87 to 88. Southwest wind 5 to 10 mph. .SUNDAY...Mostly sunny, otherwise partly cloudy with a slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 110 to 112. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 80s. .MONDAY...Mostly sunny and hot. Highs 109 to 112. .MONDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .TUESDAY...Mostly sunny and hot. Highs 112 to 114. .TUESDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .WEDNESDAY...Mostly sunny and hot. Highs 112 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid to upper 80s. .THURSDAY...Mostly sunny and hot. Highs 111 to 114. $$ AZZ562-211100- Globe/Miami- Including the cities of Globe and Miami 1131 PM MST Thu Aug 20 2026 .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 66 to 76. Northwest wind 10 to 15 mph in the evening decreasing to around 5 mph after midnight. Chance of rain 10 percent. .FRIDAY...Mostly sunny and warmer. Highs 94 to 104. Northwest wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 68 to 78. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .SATURDAY...Mostly sunny. Highs 94 to 104. Northeast wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .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 20 percent. .SUNDAY...Mostly sunny. Highs 99 to 103. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .MONDAY...Mostly sunny. Highs 99 to 103. .MONDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .TUESDAY...Partly sunny. Highs 100 to 106. .TUESDAY NIGHT...Mostly clear. Lows in the mid to upper 70s. .WEDNESDAY...Mostly sunny. Highs 102 to 106. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 70s. .THURSDAY...Partly sunny. Highs 102 to 106. $$ AZZ545-547-552-556>558-561-211100- New River Mesa-Rio Verde/Salt River-Superior-Tonto Basin- Mazatzal Mountains-Pinal/Superstition Mountains-Dripping Springs- Including the cities of Tortilla Flat, Superior, Punkin Center, Sunflower, Hayden, and Winkelman 1131 PM MST Thu Aug 20 2026 .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warmer. Lows 73 to 83. North wind 5 to 15 mph. Chance of rain 10 percent. .FRIDAY...Sunny and hot. Highs 105 to 110. Northeast wind 5 to 10 mph in the morning becoming west in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 74 to 84. West wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny and hot. Highs 106 to 111. Northeast wind 5 to 10 mph in the morning becoming west in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 75 to 85. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .SUNDAY...Partly sunny. Highs 93 to 109. .SUNDAY NIGHT...Partly cloudy. Lows 70 to 84. .MONDAY...Partly sunny. Highs 93 to 109. .MONDAY NIGHT...Partly cloudy. Lows 70 to 84. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 95 to 111. .TUESDAY NIGHT...Mostly clear. Lows 72 to 86. .WEDNESDAY...Mostly sunny and hot. Highs 96 to 112. .WEDNESDAY NIGHT...Mostly clear. Lows 72 to 86. .THURSDAY...Mostly sunny and hot. Highs 96 to 112. $$ AZZ560-211100- San Carlos- Including the cities of San Carlos and Peridot 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Breezy. Lows 67 to 77. Northwest wind 10 to 20 mph in the evening decreasing to 5 to 10 mph after midnight. Gusts up to 30 mph in the evening. Chance of rain 10 percent. .FRIDAY...Mostly sunny. Highs 99 to 109. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 69 to 79. Northwest wind 5 to 10 mph. .SATURDAY...Mostly sunny. Highs 99 to 109. 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...Mostly sunny. Highs 102 to 108. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 70s. .MONDAY...Mostly sunny. Highs 103 to 109. .MONDAY NIGHT...Partly cloudy. Lows near 80. .TUESDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 104 to 110. .TUESDAY NIGHT...Partly cloudy. Lows near 80. .WEDNESDAY...Mostly sunny and hot. Highs 105 to 111. .WEDNESDAY NIGHT...Partly cloudy. Lows near 80. .THURSDAY...Partly sunny and hot. Highs 105 to 111. $$ AZZ563-211100- Southeast Gila County- 1131 PM MST Thu Aug 20 2026 .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 66 to 76. Northeast wind 5 to 15 mph. Chance of rain 10 percent. .FRIDAY...Mostly sunny. Highs 92 to 102. East wind 5 to 10 mph in the morning becoming west in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 68 to 78. West wind 5 to 10 mph in the evening becoming northeast after midnight. .SATURDAY...Mostly sunny. Highs 93 to 103. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows 68 to 78. Northeast wind 5 to 10 mph. Chance of rain 10 percent. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Highs 90 to 102. .SUNDAY NIGHT...Partly cloudy. Lows 59 to 77. .MONDAY...Partly sunny. Highs 90 to 102. .MONDAY NIGHT...Partly cloudy. Lows 60 to 78. .TUESDAY...Partly sunny. Highs 92 to 104. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 80. .WEDNESDAY...Mostly sunny. Highs 93 to 105. .WEDNESDAY NIGHT...Partly cloudy. Lows 61 to 79. .THURSDAY...Partly sunny. Highs 92 to 104. $$ AZZ539-559-211100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. West wind 5 to 10 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs 109 to 114. North wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 79 to 89. Southwest wind 5 to 10 mph. .SATURDAY...Partly sunny in the morning then becoming mostly sunny. Very hot. Highs 110 to 115. Northeast wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows 79 to 89. Southwest wind around 5 mph. Chance of rain 10 percent. .SUNDAY...Partly sunny and hot. Highs 104 to 112. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 88. .MONDAY...Partly sunny and hot. Highs 104 to 112. .MONDAY NIGHT...Partly cloudy. Lows 82 to 89. .TUESDAY...Mostly 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 very hot. Highs 107 to 115. $$ AZZ534-538-211100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Warmer. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .FRIDAY...Sunny and hot. Highs 109 to 114. Northeast wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 78 to 88. West wind 5 to 10 mph in the evening becoming north after midnight. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. Northeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 79 to 89. West wind around 5 mph in the evening becoming north after midnight. .SUNDAY...Partly cloudy. A 10 percent chance of showers in the morning. Hot. Highs 103 to 111. .SUNDAY NIGHT...Partly cloudy. Lows 79 to 87. .MONDAY...Mostly sunny and hot. Highs 104 to 112. .MONDAY NIGHT...Partly cloudy. Lows 80 to 88. .TUESDAY...Mostly sunny and hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 81 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 107 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 81 to 89. .THURSDAY...Mostly sunny and very hot. Highs 107 to 115. $$ AZZ531-533-211100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .FRIDAY...Sunny and 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 78 to 88. West wind 5 to 10 mph in the evening becoming northwest around 5 mph after midnight. .SATURDAY...Mostly sunny and hot. Highs 109 to 114. North wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 79 to 89. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .SUNDAY...Partly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 103 to 113. .SUNDAY NIGHT...Partly cloudy. Lows 80 to 87. .MONDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 103 to 111. .MONDAY NIGHT...Mostly clear. Lows 80 to 88. .TUESDAY...Mostly sunny and hot. Highs 105 to 113. .TUESDAY NIGHT...Clear. Lows 81 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 107 to 115. .WEDNESDAY NIGHT...Mostly clear. Lows 82 to 88. .THURSDAY...Partly sunny in the morning then becoming sunny. Hot. Highs 106 to 114. $$ AZZ535-536-211100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 1131 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. West wind 5 to 10 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs 109 to 114. Light wind in the morning becoming west 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows 78 to 88. West wind 5 to 10 mph. .SATURDAY...Mostly sunny and very hot. Highs 110 to 115. Light wind in the morning becoming west 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 80 to 90. Southwest wind 5 to 10 mph. .SUNDAY...Partly sunny. A slight chance of showers in the morning, then a slight chance of afternoon showers and thunderstorms. Hot. Highs 106 to 112. Chance of rain 10 percent. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 86. .MONDAY...Mostly sunny and hot. Highs 106 to 112. .MONDAY NIGHT...Partly cloudy. Lows 83 to 88. .TUESDAY...Mostly sunny and hot. Highs 110 to 114. .TUESDAY NIGHT...Mostly clear. Lows 84 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 110 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 88. .THURSDAY...Mostly sunny and very hot. Highs 109 to 115. $$ AZZ530-CAZ569-211100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 1131 PM MST Thu Aug 20 2026 /1131 PM PDT Thu Aug 20 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ FRIDAY... .TONIGHT...Mostly clear. Lows 78 to 88. Southwest wind 10 to 15 mph in the evening becoming south around 5 mph after midnight. .FRIDAY...Sunny and very hot. Highs 110 to 115. South wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 77 to 87. Southwest wind 5 to 10 mph. .SATURDAY...Sunny and very hot. Highs 111 to 116. Northwest wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 79 to 89. Southwest wind 5 to 10 mph. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 108 to 114. .SUNDAY NIGHT...Partly cloudy. Lows 82 to 87. .MONDAY...Mostly sunny and hot. Highs 107 to 113. .MONDAY NIGHT...Mostly clear. Lows 82 to 88. .TUESDAY...Mostly sunny and very hot. Highs 109 to 115. .TUESDAY NIGHT...Mostly clear. Lows 83 to 89. .WEDNESDAY...Mostly sunny and very hot. Highs 111 to 117. .WEDNESDAY NIGHT...Mostly clear. Lows 84 to 89. .THURSDAY...Mostly sunny and very hot. Highs 110 to 116. $$ CAZ565-570-211100- Imperial County Southeast-Chuckwalla Valley- Including the cities of Winterhaven and Midland 1131 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 80 to 90. Southwest wind 10 to 15 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs 109 to 114. Southeast wind around 5 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 80 to 90. West wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 109 to 114. Northwest wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 81 to 91. West wind 5 to 10 mph. .SUNDAY...Mostly sunny and hot. Highs 105 to 113. .SUNDAY NIGHT...Partly cloudy. Lows 81 to 89. .MONDAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Hot. Highs 104 to 112. .MONDAY NIGHT...Mostly clear. Lows 83 to 90. .TUESDAY...Mostly sunny and hot. Highs 106 to 114. .TUESDAY NIGHT...Clear. Lows 83 to 91. .WEDNESDAY...Sunny and very hot. Highs 108 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 91. .THURSDAY...Mostly sunny and very hot. Highs 107 to 115. $$ CAZ564-568-211100- Chuckwalla Mountains-Chiriaco Summit- Including the cities of Imperial Hot Mineral Springs and Chiriaco Summit 1131 PM PDT Thu Aug 20 2026 .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 78 to 88. Southwest wind 5 to 10 mph in the evening becoming light after midnight. .FRIDAY...Sunny and hot. Highs 105 to 110. Southwest wind 5 to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 10 mph in the evening becoming northwest around 5 mph after midnight. .SATURDAY...Sunny and hot. Highs 107 to 112. Northwest wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 78 to 88. West wind 5 to 10 mph. .SUNDAY...Sunny and hot. Highs 100 to 110. .SUNDAY NIGHT...Partly cloudy. Lows 78 to 87. .MONDAY...Mostly sunny. A 10 percent chance of showers and thunderstorms in the morning. Highs 99 to 109. .MONDAY NIGHT...Mostly clear. Lows 79 to 88. .TUESDAY...Sunny and hot. Highs 100 to 112. .TUESDAY NIGHT...Clear. Lows 80 to 89. .WEDNESDAY...Sunny and hot. Highs 101 to 113. .WEDNESDAY NIGHT...Mostly clear. Lows 80 to 88. .THURSDAY...Mostly sunny and hot. Highs 101 to 113. $$ CAZ563-211100- Salton Sea- Including the city of Desert Shores 1131 PM PDT Thu Aug 20 2026 .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 81 to 91. South wind 10 to 15 mph in the evening becoming northwest 5 to 10 mph after midnight. .FRIDAY...Mostly sunny and hot. Highs 107 to 112. Southwest wind around 5 mph in the morning becoming south 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 81 to 91. West wind 5 to 15 mph. .SATURDAY...Sunny and hot. Highs 108 to 113. Northwest wind 5 to 10 mph in the morning becoming south in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 82 to 92. West wind 5 to 15 mph. .SUNDAY...Sunny and hot. Highs 102 to 112. .SUNDAY NIGHT...Mostly clear. Lows in the mid 80s to lower 90s. .MONDAY...Sunny and hot. Highs 102 to 110. .MONDAY NIGHT...Clear. Lows 86 to 92. .TUESDAY...Sunny and hot. Highs 102 to 112. .TUESDAY NIGHT...Clear. Lows 87 to 93. .WEDNESDAY...Sunny and hot. Highs 103 to 113. .WEDNESDAY NIGHT...Mostly clear. Lows 86 to 92. .THURSDAY...Mostly sunny and hot. Highs 103 to 113. $$ CAZ567-211100- Imperial Valley- Including the cities of El Centro, Calexico, Alamorio, and Brawley 1131 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 77 to 87. Southeast wind 5 to 10 mph in the evening becoming light after midnight. .FRIDAY...Mostly sunny and hot. Highs 109 to 114. Light wind in the morning becoming southwest 5 to 10 mph in the afternoon. .FRIDAY NIGHT...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 78 to 88. 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 with a 10 percent chance of showers and thunderstorms. Hot. Highs 109 to 113. .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 very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows in the upper 80s. .WEDNESDAY...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 112 to 116. $$ CAZ566-211100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 1131 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 80 to 90. Southeast wind 5 to 10 mph in the evening becoming west around 5 mph after midnight. .FRIDAY...Mostly sunny and very hot. Highs 111 to 116. North wind around 5 mph in the morning becoming southeast 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 79 to 89. West wind 5 to 15 mph. .SATURDAY...Sunny and very hot. Highs 112 to 117. Northwest wind 5 to 10 mph in the morning becoming southeast in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 81 to 91. West wind 5 to 15 mph. .SUNDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Very hot. Highs 109 to 115. .SUNDAY NIGHT...Mostly clear. Lows 85 to 90. .MONDAY...Sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 109 to 113. .MONDAY NIGHT...Mostly clear. Lows 86 to 91. .TUESDAY...Sunny and very hot. Highs 111 to 115. .TUESDAY NIGHT...Clear. Lows 87 to 92. .WEDNESDAY...Sunny and very hot. Highs 112 to 118. .WEDNESDAY NIGHT...Mostly clear. Lows 86 to 91. .THURSDAY...Mostly sunny and very hot. Highs 111 to 117. $$ CAZ562-211100- Imperial County Southwest- Including the city of Mountain Spring 1131 PM PDT Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT FRIDAY... .TONIGHT...Partly cloudy in the evening then becoming clear. Lows 82 to 92. Southwest wind 10 to 15 mph. .FRIDAY...Mostly sunny and hot. Highs 109 to 114. North wind 10 to 15 mph in the morning becoming south 5 to 15 mph in the afternoon. .FRIDAY NIGHT...Clear and breezy. Lows 81 to 91. Southwest wind 10 to 20 mph. Gusts up to 30 mph. .SATURDAY...Sunny and hot. Highs 109 to 114. Southwest wind 10 to 15 mph in the morning becoming southeast 5 to 15 mph in the afternoon. .SATURDAY NIGHT...Clear and breezy. Lows 82 to 92. West 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. Lows 82 to 92. .MONDAY...Mostly sunny. A 10 percent chance of afternoon showers and thunderstorms. Hot. Highs 102 to 112. .MONDAY NIGHT...Clear. Lows 82 to 92. .TUESDAY...Sunny and hot. Highs 104 to 114. .TUESDAY NIGHT...Clear. Lows 83 to 93. .WEDNESDAY...Sunny and very hot. Highs 106 to 116. .WEDNESDAY NIGHT...Mostly clear. Lows 83 to 93. .THURSDAY...Mostly sunny and very hot. Highs 106 to 116. $$ CAZ560-561-211100- Joshua Tree NP West-Joshua Tree NP East- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 1131 PM PDT Thu Aug 20 2026 .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 76 to 86. Southwest wind 10 to 15 mph in the evening decreasing to around 5 mph after midnight. .FRIDAY...Mostly sunny. Highs 98 to 108. Southwest wind around 5 mph in the morning becoming south 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 76 to 86. West wind 5 to 10 mph. .SATURDAY...Sunny. Highs 99 to 109. Northwest wind 5 to 10 mph in the morning becoming south 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 77 to 87. West wind 5 to 15 mph. .SUNDAY...Sunny. Highs 92 to 108. .SUNDAY NIGHT...Mostly clear. Lows 69 to 86. .MONDAY...Mostly sunny. A 10 percent chance of showers and thunderstorms in the morning. Highs 91 to 107. .MONDAY NIGHT...Mostly clear. Lows 69 to 87. .TUESDAY...Sunny. Highs 93 to 109. .TUESDAY NIGHT...Clear. Lows 70 to 87. .WEDNESDAY...Sunny and hot. Highs 94 to 110. .WEDNESDAY NIGHT...Mostly clear. Lows 70 to 86. .THURSDAY...Mostly sunny and hot. Highs 94 to 110. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix