645
FPUS55 KTWC 211837
ZFPTWC
ZONE FORECAST PRODUCT FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
1137 AM MST SAT MAR 21 2026
AZZ501-220200-
WESTERN PIMA COUNTY-
INCLUDING AJO AND ORGAN PIPE CACTUS N.M.
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 102 TO 107.
TONIGHT
MOSTLY CLEAR. LOWS 64 TO 70.
SUNDAY
MOSTLY SUNNY. HIGHS 96 TO 101.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 60 TO 66.
MONDAY
MOSTLY SUNNY. HIGHS 91 TO 96.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 58 TO 64.
TUESDAY
SUNNY. HIGHS 94 TO 99.
TUESDAY NIGHT
CLEAR. LOWS 60 TO 66.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 98 TO 104. LOWS 62 TO
68.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 62 TO 68.
FRIDAY
PARTLY CLOUDY. HIGHS 98 TO 103.
AZZ502-220200-
TOHONO O'ODHAM NATION-
INCLUDING SELLS
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 99 TO 104.
TONIGHT
MOSTLY CLEAR. LOWS 63 TO 71.
SUNDAY
MOSTLY SUNNY. HIGHS 95 TO 100.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 59 TO 65.
MONDAY
MOSTLY SUNNY. HIGHS 92 TO 97.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 59 TO 65.
TUESDAY
SUNNY. HIGHS 94 TO 99.
TUESDAY NIGHT
CLEAR. LOWS 60 TO 66.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 96 TO 102. LOWS
61 TO 68.
FRIDAY
PARTLY CLOUDY. HIGHS 96 TO 101.
AZZ503-220200-
UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-
INCLUDING NOGALES
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 95 TO 100.
TONIGHT
CLEAR. LOWS 56 TO 64.
SUNDAY
MOSTLY SUNNY. HIGHS 91 TO 97.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 59.
MONDAY
MOSTLY SUNNY. HIGHS 89 TO 94.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 59.
TUESDAY
SUNNY. HIGHS 91 TO 96.
TUESDAY NIGHT
CLEAR. LOWS 54 TO 60.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 91 TO 98. LOWS 55 TO
61.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 56 TO 62.
FRIDAY
PARTLY CLOUDY. HIGHS 90 TO 96.
AZZ504-220200-
TUCSON METRO AREA-
INCLUDING TUCSON, GREEN VALLEY, MARANA, AND VAIL
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 96 TO 102. NORTHWEST WIND 5 TO
10 MPH.
TONIGHT
CLEAR. LOWS 61 TO 67. NORTHWEST WIND 5 TO 10 MPH
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS 94 TO 100. SOUTH WIND AROUND 10 MPH
BECOMING WEST 5 TO 15 MPH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 58 TO 64. WEST WIND 5 TO
15 MPH BECOMING SOUTH AROUND 10 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY SUNNY. HIGHS 91 TO 97. SOUTH WIND AROUND 10 MPH
BECOMING WEST IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 57 TO 63.
TUESDAY
SUNNY. HIGHS 92 TO 98.
TUESDAY NIGHT
CLEAR. LOWS 58 TO 64.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 94 TO 100. LOWS
59 TO 66.
FRIDAY
MOSTLY SUNNY. HIGHS 93 TO 99.
AZZ505-220200-
SOUTH CENTRAL PINAL COUNTY-
INCLUDING PICACHO PEAK STATE PARK
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 97 TO 102.
TONIGHT
MOSTLY CLEAR. LOWS 61 TO 69.
SUNDAY
MOSTLY SUNNY. HIGHS 95 TO 100.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 59 TO 67.
MONDAY
MOSTLY SUNNY. HIGHS 93 TO 98.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 58 TO 64.
TUESDAY
SUNNY. HIGHS 93 TO 98.
TUESDAY NIGHT
CLEAR. LOWS 59 TO 65.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 96 TO 101. LOWS
60 TO 66.
FRIDAY
MOSTLY SUNNY. HIGHS 96 TO 101.
AZZ506-220200-
SOUTHEAST PINAL COUNTY-
INCLUDING MAMMOTH AND ORACLE
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 94 TO 100.
TONIGHT
MOSTLY CLEAR. LOWS 63 TO 68.
SUNDAY
MOSTLY SUNNY. HIGHS 91 TO 97.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 61 TO 66.
MONDAY
MOSTLY SUNNY. HIGHS 89 TO 95.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 59 TO 64.
TUESDAY
SUNNY. HIGHS 90 TO 96.
TUESDAY NIGHT
CLEAR. LOWS 60 TO 65.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 92 TO 98. LOWS
60 TO 66.
FRIDAY
MOSTLY SUNNY. HIGHS 91 TO 97.
AZZ507-220200-
UPPER SAN PEDRO RIVER VALLEY-
INCLUDING SIERRA VISTA AND BENSON
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 93 TO 98.
TONIGHT
CLEAR. LOWS 54 TO 62.
SUNDAY
MOSTLY SUNNY. HIGHS 90 TO 95.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 59.
MONDAY
MOSTLY SUNNY. HIGHS 87 TO 92.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57.
TUESDAY
SUNNY. HIGHS 89 TO 94.
TUESDAY NIGHT
CLEAR. LOWS 52 TO 58.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 90 TO 96. LOWS 53 TO
59.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 54 TO 60. HIGHS
88 TO 93.
AZZ508-220200-
EASTERN COCHISE COUNTY BELOW 5000 FEET-
INCLUDING WILLCOX AND DOUGLAS
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 93 TO 98.
TONIGHT
CLEAR. LOWS 54 TO 60.
SUNDAY
MOSTLY SUNNY. HIGHS 90 TO 95.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 59.
MONDAY
MOSTLY SUNNY. HIGHS 88 TO 93.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57.
TUESDAY
SUNNY. HIGHS 89 TO 94.
TUESDAY NIGHT
CLEAR. LOWS 52 TO 58.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 90 TO 96. LOWS 53 TO
59.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS
87 TO 92.
AZZ509-220200-
UPPER GILA RIVER VALLEY-
INCLUDING CLIFTON AND SAFFORD
1137 AM MST SAT MAR 21 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY
REST OF TODAY
SUNNY. HIGHS 92 TO 98.
TONIGHT
MOSTLY CLEAR. LOWS 55 TO 63.
SUNDAY
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 88 TO 94.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 55 TO 61.
MONDAY
MOSTLY SUNNY. HIGHS 87 TO 93.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 59.
TUESDAY
SUNNY. HIGHS 88 TO 94.
TUESDAY NIGHT
CLEAR. LOWS 55 TO 61.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 90 TO 96. LOWS
55 TO 61.
FRIDAY
MOSTLY SUNNY. HIGHS 87 TO 93.
AZZ510-220200-
WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES-
INCLUDING HANNAGAN MEADOW
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 81 TO 89.
TONIGHT
MOSTLY CLEAR. LOWS 49 TO 61.
SUNDAY
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 77 TO 85.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 59.
MONDAY
MOSTLY SUNNY. HIGHS 75 TO 83.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 56.
TUESDAY
SUNNY. HIGHS 77 TO 85.
TUESDAY NIGHT
CLEAR. LOWS 49 TO 59.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 79 TO 88. LOWS
48 TO 58.
FRIDAY
MOSTLY SUNNY. HIGHS 77 TO 85.
AZZ511-220200-
GALIURO AND PINALENO MOUNTAINS-
INCLUDING MOUNT GRAHAM
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 80 TO 90.
TONIGHT
MOSTLY CLEAR. LOWS 58 TO 64.
SUNDAY
MOSTLY SUNNY. HIGHS 77 TO 87.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 55 TO 61.
MONDAY
MOSTLY SUNNY. HIGHS 75 TO 85.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 60.
TUESDAY
SUNNY. HIGHS 76 TO 86.
TUESDAY NIGHT
CLEAR. LOWS 54 TO 60.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 78 TO 89. LOWS
55 TO 61.
FRIDAY
MOSTLY SUNNY. HIGHS 76 TO 86.
AZZ512-220200-
CHIRICAHUA MOUNTAINS-
INCLUDING CHIRICAHUA N.M.
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 84 TO 92.
TONIGHT
CLEAR. LOWS 56 TO 62.
SUNDAY
MOSTLY SUNNY. HIGHS 81 TO 89.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 54 TO 60.
MONDAY
MOSTLY SUNNY. HIGHS 79 TO 87.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 52 TO 58.
TUESDAY
SUNNY. HIGHS 80 TO 88.
TUESDAY NIGHT
CLEAR. LOWS 53 TO 59.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 82 TO 90. LOWS 53 TO
59.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 54 TO 60. HIGHS
78 TO 86.
AZZ513-220200-
DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS-
INCLUDING BISBEE, CANELO HILLS, AND MADERA CANYON
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 87 TO 93.
TONIGHT
CLEAR. LOWS 57 TO 63.
SUNDAY
MOSTLY SUNNY. HIGHS 84 TO 90.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 54 TO 60.
MONDAY
MOSTLY SUNNY. HIGHS 82 TO 88.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 59.
TUESDAY
SUNNY. HIGHS 83 TO 89.
TUESDAY NIGHT
CLEAR. LOWS 54 TO 59.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 85 TO 91. LOWS 55 TO
60.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS
83 TO 89.
AZZ514-220200-
CATALINA AND RINCON MOUNTAINS-
INCLUDING MOUNT LEMMON AND SUMMERHAVEN
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 79 TO 91.
TONIGHT
MOSTLY CLEAR. LOWS 60 TO 66.
SUNDAY
MOSTLY SUNNY. HIGHS 77 TO 87.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 57 TO 63.
MONDAY
MOSTLY SUNNY. HIGHS 74 TO 84.
MONDAY NIGHT
CLEAR. LOWS 55 TO 61.
TUESDAY
SUNNY. HIGHS 76 TO 86.
TUESDAY NIGHT
CLEAR. LOWS 55 TO 61.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 78 TO 88. LOWS
56 TO 63.
FRIDAY
MOSTLY SUNNY. HIGHS 76 TO 86.
AZZ515-220200-
BABOQUIVARI MOUNTAINS-
INCLUDING KITT PEAK
1137 AM MST SAT MAR 21 2026
REST OF TODAY
SUNNY. HIGHS 88 TO 94.
TONIGHT
MOSTLY CLEAR. LOWS 64 TO 69.
SUNDAY
MOSTLY SUNNY. HIGHS 85 TO 91.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 59 TO 64.
MONDAY
MOSTLY SUNNY. HIGHS 82 TO 88.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 58 TO 63.
TUESDAY
SUNNY. HIGHS 84 TO 90.
TUESDAY NIGHT
CLEAR. LOWS 59 TO 64.
WEDNESDAY THROUGH THURSDAY NIGHT
CLEAR. HIGHS 86 TO 92. LOWS
61 TO 66.
FRIDAY
PARTLY CLOUDY. HIGHS 85 TO 91.
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