Zone Forecast Product
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
816 FPUS55 KTWC 210304 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 804 PM MST Thu Aug 20 2026 AZZ501-211400- Western Pima County- Including Ajo and Organ Pipe Cactus N.M. 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms late in the evening. Lows 82 to 87. .FRIDAY...Mostly sunny. Highs 108 to 113. .FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 84 to 89. .SATURDAY...Partly cloudy. Highs 107 to 113. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 82 to 87. .SUNDAY...Partly cloudy. Highs 104 to 109. .SUNDAY NIGHT...Partly cloudy. Lows 80 to 85. .MONDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 104 to 109. .MONDAY NIGHT...Partly cloudy. Lows 81 to 86. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 107 to 112. Lows 83 to 88. .WEDNESDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 82 to 87. .THURSDAY...Mostly sunny. Highs 106 to 111. $$ AZZ502-211400- Tohono O`odham Nation- Including Sells 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms late in the evening. Lows 78 to 83. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 104 to 109. .FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 79 to 84. .SATURDAY...Mostly sunny. Highs 104 to 109. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows 79 to 84. .SUNDAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 101 to 106. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 78 to 83. .MONDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 101 to 106. .MONDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 78 to 83. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 103 to 109. Lows 80 to 85. .WEDNESDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 80 to 85. .THURSDAY...Mostly sunny. Highs 103 to 108. $$ AZZ503-211400- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 68 to 74. .FRIDAY...Partly cloudy in the morning, then a 30 percent chance of showers and thunderstorms in the afternoon. Highs 96 to 102. .FRIDAY NIGHT...Partly cloudy. Chance of showers and thunderstorms in the evening, then slight chance of showers after midnight. Lows 69 to 75. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy. Highs 96 to 102. .SATURDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 68 to 74. .SUNDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 94 to 100. .SUNDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 68 to 74. .MONDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 94 to 100. .MONDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 68 to 74. .TUESDAY...Partly cloudy. Highs 96 to 102. .TUESDAY NIGHT...Partly cloudy. Lows 70 to 76. .WEDNESDAY...Mostly sunny. Highs 97 to 103. .WEDNESDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 70 to 76. .THURSDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 97 to 103. $$ AZZ504-211400- Tucson Metro Area- Including Tucson, Green Valley, Marana, and Vail 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Partly cloudy. Lows 75 to 81. West wind around 10 mph becoming southeast around 5 mph after midnight. .FRIDAY...Partly cloudy in the morning, then a 10 percent chance of showers and thunderstorms in the afternoon. Highs 101 to 107. Southeast wind around 5 mph becoming northwest around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 75 to 81. West wind around 10 mph becoming southeast around 5 mph after midnight. .SATURDAY...Mostly sunny. Highs 102 to 108. Southeast wind around 5 mph becoming north around 10 mph in the afternoon. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows 75 to 81. Southwest wind around 10 mph becoming southeast after midnight. .SUNDAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Highs 100 to 106. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 75 to 81. .MONDAY...Partly cloudy. Highs 100 to 106. .MONDAY NIGHT...Partly cloudy. Lows 75 to 81. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 102 to 109. Lows 77 to 83. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A 10 percent chance of showers and thunderstorms. Lows 77 to 83. Highs 102 to 108. $$ AZZ505-211400- South Central Pinal County- Including Picacho Peak State Park 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Mostly cloudy late in the evening then becoming partly cloudy. Lows 78 to 83. .FRIDAY...Partly cloudy in the morning then becoming mostly sunny. Highs 104 to 109. .FRIDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 79 to 84. .SATURDAY...Mostly sunny. Highs 105 to 110. .SATURDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 79 to 84. Chance of precipitation 30 percent. .SUNDAY...Mostly sunny. Highs 102 to 107. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 78 to 83. .MONDAY...Partly cloudy. Highs 102 to 107. .MONDAY NIGHT...Partly cloudy. Lows 78 to 83. .TUESDAY THROUGH THURSDAY...Mostly clear. Highs 104 to 110. Lows 80 to 86. $$ AZZ506-211400- Southeast Pinal County- Including Mammoth and Oracle 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Mostly cloudy late in the evening then becoming partly cloudy. Lows 75 to 80. .FRIDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 101 to 107. .FRIDAY NIGHT...Partly cloudy. Lows 76 to 81. .SATURDAY...Mostly sunny. Highs 102 to 108. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 76 to 81. .SUNDAY...Mostly sunny. Highs 100 to 106. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 76 to 81. .MONDAY...Mostly sunny. Highs 100 to 106. .MONDAY NIGHT...Partly cloudy. Lows 76 to 81. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 102 to 109. Lows 78 to 83. .WEDNESDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 78 to 83. .THURSDAY...Mostly sunny. Highs 102 to 108. $$ AZZ507-211400- Upper San Pedro River Valley- Including Sierra Vista and Benson 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 67 to 73. .FRIDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 95 to 101. .FRIDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 67 to 73. .SATURDAY...Mostly sunny. Highs 96 to 102. .SATURDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 67 to 73. Chance of precipitation 30 percent. .SUNDAY...Mostly sunny. Highs 94 to 100. .SUNDAY NIGHT...Partly cloudy. Lows 67 to 73. .MONDAY...Mostly sunny. Highs 94 to 100. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 67 to 73. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 96 to 103. Lows 69 to 75. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 69 to 75. .THURSDAY...Mostly sunny with a 10 percent chance of showers and thunderstorms. Highs 96 to 102. $$ AZZ508-211400- Eastern Cochise County below 5000 feet- Including Willcox and Douglas 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 68 to 73. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 97 to 102. .FRIDAY NIGHT...Partly cloudy. Lows 68 to 73. .SATURDAY...Mostly sunny. Highs 98 to 103. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 68 to 73. .SUNDAY...Mostly sunny. Highs 96 to 101. .SUNDAY NIGHT...Mostly clear. Lows 68 to 73. .MONDAY...Mostly sunny. Highs 97 to 102. .MONDAY NIGHT...Partly cloudy. Lows 68 to 73. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 98 to 104. Lows 70 to 75. .WEDNESDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 70 to 75. .THURSDAY...Mostly sunny. Highs 98 to 103. $$ AZZ509-211400- Upper Gila River Valley- Including Clifton and Safford 804 PM MST Thu Aug 20 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SATURDAY... .REST OF TONIGHT...Mostly cloudy. Lows 70 to 76. .FRIDAY...Partly cloudy in the morning, then mostly sunny with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 97 to 105. .FRIDAY NIGHT...Partly cloudy. Lows 71 to 77. .SATURDAY...Mostly sunny. Highs 98 to 106. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 70 to 78. .SUNDAY...Mostly sunny. Highs 97 to 105. .SUNDAY NIGHT...Partly cloudy. Lows 70 to 78. .MONDAY...Mostly sunny. Highs 97 to 105. .MONDAY NIGHT...Partly cloudy. Lows 70 to 78. .TUESDAY THROUGH THURSDAY...Mostly clear. Highs 99 to 107. Lows 71 to 79. $$ AZZ510-211400- White Mountains of Graham and Greenlee Counties- Including Hannagan Meadow 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Mostly cloudy. A 10 percent chance of showers and thunderstorms late in the evening. Lows 58 to 70. .FRIDAY...Partly cloudy. A 30 percent chance of showers and thunderstorms in the afternoon. Highs 86 to 96. .FRIDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows 60 to 70. .SATURDAY...Mostly sunny with a 40 percent chance of showers and thunderstorms. Highs 85 to 95. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 59 to 71. .SUNDAY...Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs 85 to 95. .SUNDAY NIGHT...Partly cloudy. Lows 59 to 71. .MONDAY...Partly cloudy. Highs 85 to 95. .MONDAY NIGHT THROUGH TUESDAY NIGHT...Partly cloudy. Lows 59 to 72. Highs 86 to 98. .WEDNESDAY...Partly cloudy. Highs 86 to 98. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 60 to 72. Highs 87 to 97. $$ AZZ511-211400- Galiuro and Pinaleno Mountains- Including Mount Graham 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Mostly cloudy. Lows 65 to 71. .FRIDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 85 to 95. .FRIDAY NIGHT...Partly cloudy. Lows 66 to 72. .SATURDAY...Mostly sunny. Highs 86 to 96. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 66 to 72. .SUNDAY...Mostly sunny. Highs 85 to 95. .SUNDAY NIGHT...Partly cloudy. Lows 66 to 72. .MONDAY...Partly cloudy. Highs 85 to 95. .MONDAY NIGHT...Partly cloudy. Lows 66 to 72. .TUESDAY...Mostly sunny. Highs 87 to 97. .TUESDAY NIGHT...Partly cloudy. Lows 68 to 74. .WEDNESDAY...Mostly sunny. Highs 87 to 97. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 68 to 74. .THURSDAY...Mostly sunny. Highs 87 to 97. $$ AZZ512-211400- Chiricahua Mountains- Including Chiricahua N.M. 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 63 to 69. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 87 to 97. .FRIDAY NIGHT...Partly cloudy. Lows 64 to 70. .SATURDAY...Mostly sunny. Highs 87 to 97. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 63 to 69. .SUNDAY...Mostly sunny. Highs 86 to 96. .SUNDAY NIGHT...Partly cloudy. Lows 63 to 69. .MONDAY...Mostly sunny. Highs 86 to 96. .MONDAY NIGHT...Partly cloudy. Lows 63 to 69. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 88 to 98. Lows 65 to 71. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 65 to 71. .THURSDAY...Partly cloudy. Highs 88 to 98. $$ AZZ513-211400- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including Bisbee, Canelo Hills, and Madera Canyon 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 65 to 70. .FRIDAY...Partly cloudy. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 89 to 97. .FRIDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 66 to 71. .SATURDAY...Mostly sunny. Highs 89 to 97. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 65 to 70. .SUNDAY...Mostly sunny. Highs 87 to 95. .SUNDAY NIGHT...Partly cloudy. Lows 65 to 70. .MONDAY...Partly cloudy. Highs 87 to 95. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 65 to 70. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 89 to 98. Lows 67 to 72. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 67 to 72. .THURSDAY...Partly cloudy. Highs 90 to 98. $$ AZZ514-211400- Catalina and Rincon Mountains- Including Mount Lemmon and Summerhaven 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 66 to 72. .FRIDAY...Partly cloudy. A 30 percent chance of showers and thunderstorms in the afternoon. Highs 83 to 93. .FRIDAY NIGHT...Partly cloudy. Lows 67 to 73. .SATURDAY...Mostly sunny. Highs 84 to 94. .SATURDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 66 to 72. .SUNDAY...Mostly sunny. Highs 82 to 92. .SUNDAY NIGHT...Partly cloudy. Lows 66 to 72. .MONDAY...Mostly sunny. Highs 82 to 92. .MONDAY NIGHT...Partly cloudy. Lows 66 to 72. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 84 to 95. Lows 67 to 73. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A 10 percent chance of showers and thunderstorms. Lows 68 to 74. Highs 84 to 94. $$ AZZ515-211400- Baboquivari Mountains- Including Kitt Peak 804 PM MST Thu Aug 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 71 to 76. .FRIDAY...Partly cloudy in the morning, then a 40 percent chance of showers and thunderstorms in the afternoon. Highs 91 to 97. .FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 72 to 77. .SATURDAY...Partly cloudy. Highs 91 to 97. .SATURDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 71 to 76. .SUNDAY...Partly cloudy with a 10 percent chance of showers and thunderstorms. Highs 89 to 95. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 71 to 76. .MONDAY...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs 89 to 95. .MONDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows 71 to 76. .TUESDAY...Mostly sunny. Highs 91 to 97. .TUESDAY NIGHT...Partly cloudy. Lows 73 to 78. .WEDNESDAY...Mostly sunny. Highs 92 to 98. .WEDNESDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 73 to 78. .THURSDAY...Partly cloudy. Highs 91 to 97. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson