334  
FPUS55 KPSR 200721  
ZFPPSR  
 
ZONE FORECAST PRODUCT FOR SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA  
NATIONAL WEATHER SERVICE PHOENIX AZ  
1221 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>544-546-548-550-551-201100-  
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  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
CONSIDERABLE CLOUDINESS WITH A CHANCE OF THUNDERSTORMS AND  
A SLIGHT CHANCE OF SHOWERS. MUCH COOLER. LOWS 74 TO 78. SOUTHEAST  
WIND 5 TO 10 MPH. CHANCE OF RAIN 40 PERCENT.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING SUNNY. HIGHS  
103 TO 107. WEST WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 AND HOT. HIGHS 107 TO 112.    
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.  
 
 
 
AZZ541-549-555-201100-  
CAVE CREEK/NEW RIVER-FOUNTAIN HILLS/EAST MESA-  
APACHE JUNCTION/GOLD CANYON-  
INCLUDING THE CITIES OF SCOTTSDALE, FOUNTAIN HILLS,  
AND APACHE JUNCTION  
1221 AM 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. COOLER. LOWS 69 TO 79. NORTHEAST WIND AROUND  
5 MPH. CHANCE OF RAIN 10 PERCENT.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HIGHS 102 TO 107. WEST WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 AND HOT. HIGHS 105 TO 111.    
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.  
 
 
 
AZZ553-554-201100-  
NORTHWEST PINAL COUNTY-WEST PINAL COUNTY-  
INCLUDING THE CITIES OF CASA GRANDE, CACTUS FOREST, FLORENCE,  
AND COOLIDGE  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
CONSIDERABLE CLOUDINESS WITH A CHANCE OF THUNDERSTORMS AND  
A SLIGHT CHANCE OF SHOWERS. MUCH COOLER. LOWS 67 TO 77. SOUTHEAST  
WIND 5 TO 10 MPH. CHANCE OF RAIN 30 PERCENT.    
THURSDAY  
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.    
THURSDAY NIGHT  
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 106 TO 112.    
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.  
 
 
 
AZZ532-201100-  
YUMA-  
INCLUDING THE CITIES OF YUMA AND FORTUNA FOOTHILLS  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 83 TO 86. SOUTHEAST WIND 10 TO 15 MPH.   
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING SUNNY. HOT.  
HIGHS NEAR 111. SOUTH WIND 5 TO 15 MPH.    
THURSDAY NIGHT  
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 111 TO 115.    
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.  
 
 
 
AZZ562-201100-  
GLOBE/MIAMI-  
INCLUDING THE CITIES OF GLOBE AND MIAMI  
1221 AM MST THU AUG 20 2026  
   
TONIGHT  
CONSIDERABLE CLOUDINESS. LOWS 64 TO 74. WEST WIND AROUND  
5 MPH.    
THURSDAY  
PARTLY SUNNY. A CHANCE OF THUNDERSTORMS AND A SLIGHT  
CHANCE OF SHOWERS IN THE AFTERNOON. HIGHS 89 TO 99. NORTHWEST WIND  
5 TO 10 MPH. CHANCE OF RAIN 30 PERCENT.    
THURSDAY NIGHT  
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 98 TO 102.    
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>558-561-201100-  
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  
1221 AM MST THU AUG 20 2026  
   
TONIGHT  
CONSIDERABLE CLOUDINESS WITH A SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS. COOLER. LOWS 68 TO 78. NORTHEAST WIND AROUND  
5 MPH. CHANCE OF RAIN 10 PERCENT.    
THURSDAY  
PARTLY SUNNY IN THE MORNING, THEN MOSTLY 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.    
THURSDAY NIGHT  
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 93 TO 109.    
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.  
 
 
 
AZZ560-201100-  
SAN CARLOS-  
INCLUDING THE CITIES OF SAN CARLOS AND PERIDOT  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
CONSIDERABLE CLOUDINESS. LOWS 66 TO 76. WEST WIND AROUND  
5 MPH.    
THURSDAY  
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.    
THURSDAY NIGHT  
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 101 TO 107.    
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.  
 
 
 
AZZ563-201100-  
SOUTHEAST GILA COUNTY-  
1221 AM MST THU AUG 20 2026  
   
TONIGHT  
CONSIDERABLE CLOUDINESS WITH A SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS. LOWS 65 TO 75. NORTHEAST WIND 5 TO 10 MPH. CHANCE  
OF RAIN 10 PERCENT.    
THURSDAY  
PARTLY CLOUDY. A CHANCE OF AFTERNOON SHOWERS AND  
THUNDERSTORMS. HIGHS 88 TO 98. WEST WIND 5 TO 10 MPH. CHANCE OF RAIN  
30 PERCENT.    
THURSDAY NIGHT  
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. A 10 PERCENT CHANCE OF AFTERNOON SHOWERS  
AND THUNDERSTORMS. HIGHS 89 TO 101.    
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.  
 
 
 
AZZ539-559-201100-  
GILA BEND-SONORAN DESERT NATL MONUMENT-  
INCLUDING THE CITIES OF GILA BEND, SENTINEL, AND KAKA  
1221 AM 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. PATCHY BLOWING DUST. NOT AS WARM. LOWS 74 TO 84.  
SOUTHEAST WIND 5 TO 10 MPH. CHANCE OF RAIN 10 PERCENT.    
THURSDAY  
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.    
THURSDAY NIGHT  
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING. LOWS 77 TO 87. NORTH WIND AROUND 5 MPH  
IN THE EVENING BECOMING SOUTHEAST AFTER MIDNIGHT. 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 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 104 TO 114.    
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.  
 
 
 
AZZ534-538-201100-  
AGUILA VALLEY-TONOPAH DESERT-  
INCLUDING THE CITIES OF AGUILA, GLADDEN, WICKENBURG, ARLINGTON,  
HASSAYAMPA, TONOPAH, AND WINTERSBURG  
1221 AM 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. PATCHY BLOWING DUST. NOT AS WARM. LOWS 72 TO 82.  
SOUTH WIND 5 TO 10 MPH. CHANCE OF RAIN 10 PERCENT.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HOT. HIGHS 105 TO 110. SOUTH WIND AROUND 5 MPH IN THE MORNING  
BECOMING WEST 5 TO 10 MPH IN THE AFTERNOON.    
THURSDAY NIGHT  
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 105 TO 113.    
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.  
 
 
 
AZZ531-533-201100-  
KOFA-CENTRAL LA PAZ-  
INCLUDING THE CITIES OF PALM CANYON, BRENDA, HARCUVAR, QUARTZSITE,  
VICKSBURG, VICKSBURG JUNCTION, AND SALOME  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 76 TO 86. SOUTHEAST WIND 5 TO 10 MPH.    
THURSDAY  
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.    
THURSDAY NIGHT  
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  
PARTLY SUNNY AND HOT. HIGHS 105 TO 113.    
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.  
 
 
 
AZZ535-536-201100-  
SOUTHEAST YUMA COUNTY-GILA RIVER VALLEY-  
INCLUDING THE CITY OF LIGURTA  
1221 AM MST THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 74 TO 84. SOUTHEAST WIND 5 TO 10 MPH.    
THURSDAY  
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.    
THURSDAY NIGHT  
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 110 TO 114.    
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-CAZ569-201100-  
PARKER VALLEY-PALO VERDE VALLEY-  
INCLUDING THE CITIES OF PARKER, EHRENBERG, MARTINEZ LAKE, BLYTHE,  
PALO VERDE, AND RIPLEY  
1221 AM MST THU AUG 20 2026 /1221 AM PDT THU AUG 20 2026/  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 77 TO 87. SOUTH WIND 10 TO 15 MPH.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING SUNNY. HOT.  
HIGHS 108 TO 113. SOUTH WIND 5 TO 15 MPH.    
THURSDAY NIGHT  
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 109 TO 115.    
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.  
 
 
 
CAZ565-570-201100-  
IMPERIAL COUNTY SOUTHEAST-CHUCKWALLA VALLEY-  
INCLUDING THE CITIES OF WINTERHAVEN AND MIDLAND  
1221 AM PDT THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 79 TO 89. SOUTHEAST WIND 10 TO 15 MPH.   
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HOT. HIGHS 107 TO 112. SOUTH WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 106 TO 114.    
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.  
 
 
 
CAZ564-568-201100-  
CHUCKWALLA MOUNTAINS-CHIRIACO SUMMIT-  
INCLUDING THE CITIES OF IMPERIAL HOT MINERAL SPRINGS AND CHIRIACO  
SUMMIT  
1221 AM PDT THU AUG 20 2026  
   
TONIGHT  
PARTLY CLOUDY. LOWS 76 TO 86. SOUTH WIND 5 TO 10 MPH.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HIGHS 104 TO 109. SOUTH WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 101 TO 111.    
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.  
 
 
 
CAZ563-201100-  
SALTON SEA-  
INCLUDING THE CITY OF DESERT SHORES  
1221 AM PDT THU AUG 20 2026  
   
TONIGHT  
MOSTLY CLEAR. LOWS 80 TO 90. SOUTHEAST WIND 10 TO 15 MPH.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HOT. HIGHS 105 TO 110. SOUTHEAST WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 102 TO 112.    
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.  
 
 
 
CAZ567-201100-  
IMPERIAL VALLEY-  
INCLUDING THE CITIES OF EL CENTRO, CALEXICO, ALAMORIO, AND BRAWLEY  
1221 AM PDT THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY  
 
   
TONIGHT  
PARTLY CLOUDY. LOWS 77 TO 87. SOUTHEAST WIND 5 TO 10 MPH.    
THURSDAY  
MOSTLY SUNNY AND HOT. HIGHS 108 TO 113. SOUTHEAST WIND  
5 TO 10 MPH.    
THURSDAY NIGHT  
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 111 TO 115.    
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.  
 
 
 
CAZ566-201100-  
IMPERIAL COUNTY WEST-  
INCLUDING THE CITIES OF COOLIDGE SPRINGS, SALTON CITY, WINONA,  
COYOTE WELLS, OCOTILLO, AND PLASTER CITY  
1221 AM PDT THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY  
 
   
TONIGHT  
MOSTLY CLEAR. LOWS 80 TO 90. EAST WIND 5 TO 10 MPH.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HOT. HIGHS 108 TO 113. EAST WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 110 TO 116.    
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.  
 
 
 
CAZ562-201100-  
IMPERIAL COUNTY SOUTHWEST-  
INCLUDING THE CITY OF MOUNTAIN SPRING  
1221 AM PDT THU AUG 20 2026  
   
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY  
 
   
TONIGHT  
MOSTLY CLEAR. LOWS 82 TO 92. WEST WIND 5 TO 10 MPH.    
THURSDAY  
MOSTLY SUNNY AND HOT. HIGHS 107 TO 112. NORTH WIND 5 TO  
10 MPH IN THE MORNING BECOMING EAST IN THE AFTERNOON.    
THURSDAY NIGHT  
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 104 TO 114.    
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.  
 
 
 
CAZ560-561-201100-  
JOSHUA TREE NP WEST-JOSHUA TREE NP EAST-  
INCLUDING THE CITIES OF COTTONWOOD VISITOR AND LOST HORSE-KEYS  
VILLAGE  
1221 AM PDT THU AUG 20 2026  
   
TONIGHT  
CLEAR. LOWS 77 TO 87. SOUTHWEST WIND 5 TO 10 MPH.    
THURSDAY  
PARTLY SUNNY IN THE MORNING THEN BECOMING MOSTLY SUNNY.  
HIGHS 97 TO 107. SOUTH WIND 5 TO 10 MPH.    
THURSDAY NIGHT  
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 92 TO 108.    
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.  
 
 
 
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