FNUS55 KTWC 222029 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 129 PM MST Sat Aug 22 2026 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION... Isolated to scattered thunderstorms expected this weekend with daily but gradually reduced chances as next week progresses. Temperatures will remain above normal through the coming week. Dryer conditions will return in the middle of the week with minimum relative humidity values mainly 10-18 percent in the valleys and 20-30 percent. Winds will generally remain less than 15 mph and terrain driven through the week. AZZ150-231415- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O'odham Nation-Tucson Metropolitan area-TDC- 129 PM MST Sat Aug 22 2026 .TONIGHT... * Sky/Weather..............Partly cloudy (45-55 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........77 to 87 degs. 24 hr Trend...........Little change. * Max Humidity.............37 to 47 pct. 24 hr Trend...........Down 2 to 5 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........North around 5 mph shifting to the east after midnight. .SUNDAY... * Sky/Weather..............Partly cloudy (40-50 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........100 to 110 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............18 to 28 pct. 24 hr Trend...........Up 1 pct. * Wind (20 ft/10-min avg)..South around 10 mph in the morning becoming light. * 10000 ft MSL Wind........Southeast 10 to 15 mph. * Mixing height............13146 ft AGL. * Transport winds..........Southwest 9 to 11 knots. * Ventilation Category.....Excellent (144606 knot-ft). .SUNDAY NIGHT... * Sky/Weather..............Partly cloudy (40-50 pct) then becoming mostly cloudy (55-65 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Min Temperature..........75 to 85 degs. 24 hr Trend...........Down 1 to 4 degs. * Max Humidity.............58 to 68 pct. 24 hr Trend...........Up 20 to 24 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph. * 10000 ft MSL Wind........Northeast 10 to 15 mph. .MONDAY... * Sky/Weather..............Partly cloudy (40-50 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........98 to 108 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............22 to 32 pct. 24 hr Trend...........Up 7 to 11 pct. * Wind (20 ft/10-min avg)..Light winds becoming northwest around 10 mph in the afternoon. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............8270 ft AGL. * Transport winds..........Southwest 9 knots shifting to the northwest 8 knots in the afternoon. * Ventilation Category.....Good (66160 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly clear. Lows 76 to 86. Highs 102 to 112. Light winds. Minimum Humidity 13 to 21 pct. .WEDNESDAY...Mostly clear. Lows 78 to 88. Highs 104 to 114. Light winds. Minimum Humidity 11 to 20 pct. .THURSDAY...Mostly clear. Lows 78 to 88. Highs 104 to 114. Light winds. Minimum Humidity 11 to 21 pct. .FRIDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 78 to 88. Highs 104 to 114. .SATURDAY...Mostly clear. Lows 78 to 88. Highs 103 to 113. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-231415- Arizona Fire Weather Zone 151 Western half Desert Grasslands FDRA including elevations up to 5500 feet in Southeast corner of Pinal County- Extreme Eastern Pima County-Western third of Cochise County- Santa Cruz County-TDC- 129 PM MST Sat Aug 22 2026 .TONIGHT... * Sky/Weather..............Partly cloudy (40-50 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........68 to 78 degs. 24 hr Trend...........Little change. * Max Humidity.............47 to 57 pct. 24 hr Trend...........Down 10 to 14 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........East 10 to 15 mph. .SUNDAY... * Sky/Weather..............Mostly sunny (20-30 pct) then becoming partly cloudy (40-50 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........94 to 104 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............19 to 29 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........East 10 to 15 mph. * Mixing height............10678 ft AGL. * Transport winds..........Southeast 8 to 9 knots. * Ventilation Category.....Very good (96102 knot-ft). .SUNDAY NIGHT... * Sky/Weather..............Mostly cloudy (45-55 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........66 to 76 degs. 24 hr Trend...........Down 1 to 4 degs. * Max Humidity.............63 to 73 pct. 24 hr Trend...........Up 12 to 16 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph. * 10000 ft MSL Wind........Northeast 10 to 15 mph. .MONDAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (30-40 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........92 to 102 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............24 to 34 pct. 24 hr Trend...........Up 5 to 9 pct. * Wind (20 ft/10-min avg)..Light winds becoming northwest around 10 mph in the afternoon. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............8970 ft AGL. * Transport winds..........Northwest 8 knots shifting to the north 10 knots in the afternoon. * Ventilation Category.....Very good (89700 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly clear. Lows 68 to 78. Highs 96 to 106. Light winds. Minimum Humidity 15 to 25 pct. .WEDNESDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. Light winds. Minimum Humidity 13 to 23 pct. .THURSDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. Light winds. Minimum Humidity 13 to 23 pct. .FRIDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 69 to 79. Highs 97 to 107. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 69 to 79. Highs 96 to 106. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$AZZ152-231415- Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- 129 PM MST Sat Aug 22 2026 .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........68 to 78 degs. 24 hr Trend...........Down 1 to 4 degs. * Max Humidity.............42 to 52 pct. 24 hr Trend...........Up 1 to 4 pct. * Wind (20 ft/10-min avg)..Northeast around 10 mph. * 10000 ft MSL Wind........Southeast 10 to 15 mph. .SUNDAY... * Sky/Weather..............Partly cloudy (25-35 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........95 to 105 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............12 to 22 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southeast 10 to 15 mph. * Mixing height............11835 ft AGL. * Transport winds..........Southeast 8 knots. * Ventilation Category.....Very good (94680 knot-ft). .SUNDAY NIGHT... * Sky/Weather..............Partly cloudy (40-50 pct) then becoming mostly cloudy (50-60 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........67 to 77 degs. 24 hr Trend...........Down 1 to 4 degs. * Max Humidity.............48 to 58 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..West around 10 mph. * 10000 ft MSL Wind........Southeast 10 to 15 mph. .MONDAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (30-40 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........95 to 105 degs. 24 hr Trend...........Little change. * Min Humidity.............15 to 25 pct. 24 hr Trend...........Up 1 to 4 pct. * Wind (20 ft/10-min avg)..Light winds becoming northwest around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............12394 ft AGL. * Transport winds..........Northwest 8 knots shifting to the east in the afternoon. * Ventilation Category.....Very good (99152 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly clear. Lows 68 to 78. Highs 97 to 107. North wind around 15 mph. Minimum Humidity 11 to 21 pct. .WEDNESDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. Light winds. Minimum Humidity 9 to 19 pct. .THURSDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. Light winds. Minimum Humidity 10 to 20 pct. .FRIDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. .SATURDAY...Mostly clear. Lows 69 to 79. Highs 97 to 107. NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL) $$ AZZ153-231415- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- 129 PM MST Sat Aug 22 2026 .TONIGHT... * Sky/Weather..............Mostly cloudy (45-55 pct) then becoming partly cloudy (40-50 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Min Temperature..........60 to 70 degs. 24 hr Trend...........Down 1 deg. * Max Humidity.............46 to 56 pct. 24 hr Trend...........Up 1 pct. * Wind (20 ft/10-min avg)..Northeast around 10 mph. * 10000 ft MSL Wind........South 5 to 10 mph. .SUNDAY... * Sky/Weather..............Partly cloudy (35-45 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........85 to 95 degs. 24 hr Trend...........Little change. * Min Humidity.............17 to 27 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..East around 10 mph shifting to the southwest in the afternoon. * 10000 ft MSL Wind........South 5 to 10 mph. * Mixing height............12858 ft AGL. * Transport winds..........East 8 knots shifting to the south in the afternoon. * Ventilation Category.....Excellent (102864 knot-ft). .SUNDAY NIGHT... * Sky/Weather..............Partly cloudy (35-45 pct) then becoming mostly cloudy (50-60 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Min Temperature..........60 to 70 degs. 24 hr Trend...........Little change. * Max Humidity.............44 to 54 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..North around 10 mph. * 10000 ft MSL Wind........South 10 to 15 mph. .MONDAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (40-50 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Max Temperature..........85 to 95 degs. 24 hr Trend...........Little change. * Min Humidity.............16 to 26 pct. 24 hr Trend...........Up 1 to 4 pct. * Wind (20 ft/10-min avg)..North around 10 mph shifting to the southwest in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............13228 ft AGL. * Transport winds..........Northeast 9 knots shifting to the south 8 knots in the afternoon. * Ventilation Category.....Excellent (105824 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Partly cloudy. Lows 60 to 70. Highs 87 to 97. North wind around 15 mph. Minimum Humidity 15 to 25 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 60 to 70. Highs 87 to 97. North wind around 15 mph. Minimum Humidity 14 to 24 pct. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 60 to 70. Highs 87 to 97. North wind around 15 mph. Minimum Humidity 15 to 25 pct. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 87 to 97. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 87 to 97. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-231415- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 129 PM MST Sat Aug 22 2026 .TONIGHT... * Sky/Weather..............Partly cloudy (35-45 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........63 to 73 degs. 24 hr Trend...........Little change. * Max Humidity.............39 to 49 pct. 24 hr Trend...........Down 3 to 6 pct. * Wind (20 ft/10-min avg)..Northeast around 10 mph. * 10000 ft MSL Wind........East 10 to 15 mph. .SUNDAY... * Sky/Weather..............Mostly sunny (20-30 pct) then becoming partly cloudy (35-45 pct). * Chance of Precip.........0 pct. * Chance of Thunder........0 pct. * Max Temperature..........84 to 94 degs. 24 hr Trend...........Little change. * Min Humidity.............19 to 29 pct. 24 hr Trend...........Up 1 pct. * Wind (20 ft/10-min avg)..Light winds becoming east around 10 mph in the afternoon. * 10000 ft MSL Wind........East 10 to 15 mph. * Mixing height............13046 ft AGL. * Transport winds..........East 9 to 10 knots. * Ventilation Category.....Excellent (123937 knot-ft). .SUNDAY NIGHT... * Sky/Weather..............Partly cloudy (40-50 pct) then becoming mostly cloudy (60-70 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Min Temperature..........61 to 71 degs. 24 hr Trend...........Down 1 to 4 degs. * Max Humidity.............50 to 60 pct. 24 hr Trend...........Up 8 to 12 pct. * Wind (20 ft/10-min avg)..West around 10 mph. * 10000 ft MSL Wind........East 10 to 15 mph. .MONDAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (35-45 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........83 to 93 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............24 to 34 pct. 24 hr Trend...........Down 1 to 4 pct. * Wind (20 ft/10-min avg)..Northwest around 10 mph. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............14321 ft AGL. * Transport winds..........Northwest 8 knots shifting to the northeast in the afternoon. * Ventilation Category.....Excellent (114568 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly clear. Lows 62 to 72. Highs 85 to 95. North wind around 15 mph. Minimum Humidity 17 to 27 pct. .WEDNESDAY...Mostly clear. Lows 64 to 74. Highs 86 to 96. Light winds. Minimum Humidity 15 to 25 pct. .THURSDAY...Mostly clear. Lows 64 to 74. Highs 86 to 96. Light winds. Minimum Humidity 15 to 25 pct. .FRIDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 64 to 74. Highs 86 to 96. .SATURDAY...Mostly clear. Lows 64 to 74. Highs 86 to 96. NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson