


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
996 FNUS55 KTWC 041034 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 334 AM MST Thu Sep 4 2025 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION... Minimum relative humidities well above 30 percent today through the weekend. Scattered showers and thunderstorm chances each day through Saturday, with drying conditions Sunday onwards. Surface winds today mainly out of the south and under 14 mph, though gusty and erratic winds possible with any thunderstorm. Winds generally remain light through the coming days. High temperatures will be below normal through the weekend then warming back to near normal next week. AZZ150-042215- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O`odham Nation-Tucson Metropolitan area-TDC- 334 AM MST Thu Sep 4 2025 .TODAY... * Sky/Weather..............Mostly cloudy (55-65 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Max Temperature..........83 to 93 degs. 24 hr Trend...........Down 7 to 11 degs. * Min Humidity.............48 to 58 pct. 24 hr Trend...........Up 21 to 25 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............5459 ft AGL. * Transport winds..........South 11 knots. * Ventilation Category.....Good (60049 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (65-75 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Min Temperature..........66 to 76 degs. 24 hr Trend...........Down 2 to 5 degs. * Max Humidity.............80 to 90 pct. 24 hr Trend...........Up 10 to 14 pct. * Wind (20 ft/10-min avg)..South around 10 mph in the evening becoming light. * 10000 ft MSL Wind........East 10 to 15 mph. .FRIDAY... * Sky/Weather..............Mostly cloudy (60-70 pct). Chance of showers and slight chance of thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........20 pct. * Max Temperature..........82 to 92 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............50 to 60 pct. 24 hr Trend...........Down 1 pct. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........Northeast 5 to 10 mph. * Mixing height............5538 ft AGL. * Transport winds..........Southeast 7 to 8 knots. * Ventilation Category.....Good (44304 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SATURDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows 66 to 76. Highs 84 to 94. Light winds. Minimum Humidity 43 to 53 pct. .SUNDAY...Mostly clear. Lows 67 to 77. Highs 88 to 98. Light winds. Minimum Humidity 33 to 43 pct. .MONDAY...Mostly clear. Lows 68 to 78. Highs 91 to 101. Light winds. Minimum Humidity 23 to 33 pct. .TUESDAY...Clear. Lows 68 to 78. Highs 92 to 102. .WEDNESDAY...Mostly clear. Lows 67 to 77. Highs 91 to 101. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-042215- 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- 334 AM MST Thu Sep 4 2025 .TODAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Chance of showers and thunderstorms. * Chance of Precip.........60 pct. * Chance of Thunder........50 pct. * Max Temperature..........75 to 85 degs. 24 hr Trend...........Down 9 to 13 degs. * Min Humidity.............51 to 61 pct. 24 hr Trend...........Up 28 to 32 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............3939 ft AGL. * Transport winds..........South 9 to 11 knots. * Ventilation Category.....Good (43329 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (80-90 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Min Temperature..........58 to 68 degs. 24 hr Trend...........Down 2 to 5 degs. * Max Humidity.............83 to 93 pct. 24 hr Trend...........Up 10 to 14 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southeast around 5 mph shifting to the northeast after midnight. .FRIDAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Chance of showers and thunderstorms. * Chance of Precip.........70 pct. * Chance of Thunder........50 pct. * Max Temperature..........74 to 84 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............54 to 64 pct. 24 hr Trend...........Up 2 to 5 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........East around 5 mph shifting to the south in the afternoon. * Mixing height............4497 ft AGL. * Transport winds..........Southeast 7 to 9 knots. * Ventilation Category.....Good (40473 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 59 to 69. Highs 78 to 88. Light winds. Minimum Humidity 52 to 62 pct. .SUNDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 59 to 69. Highs 82 to 92. Light winds. Minimum Humidity 39 to 49 pct. .MONDAY...Mostly clear. Lows 61 to 71. Highs 86 to 96. Light winds. Minimum Humidity 28 to 38 pct. .TUESDAY...Mostly clear. Lows 61 to 71. Highs 87 to 97. .WEDNESDAY...Mostly clear. Lows 60 to 70. Highs 86 to 96. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$ AZZ152-042215- 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- 334 AM MST Thu Sep 4 2025 .TODAY... * Sky/Weather..............Mostly cloudy (65-75 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........77 to 87 degs. 24 hr Trend...........Down 8 to 12 degs. * Min Humidity.............42 to 52 pct. 24 hr Trend...........Up 23 to 27 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 10 to 15 mph. * Mixing height............4350 ft AGL. * Transport winds..........South 8 to 13 knots. * Ventilation Category.....Good (56550 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (80-90 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Min Temperature..........58 to 68 degs. 24 hr Trend...........Down 3 to 6 degs. * Max Humidity.............79 to 89 pct. 24 hr Trend...........Up 21 to 25 pct. * Wind (20 ft/10-min avg)..South around 10 mph. * 10000 ft MSL Wind........Southeast 5 to 10 mph. .FRIDAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Chance of showers and thunderstorms. * Chance of Precip.........60 pct. * Chance of Thunder........50 pct. * Max Temperature..........75 to 85 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............51 to 61 pct. 24 hr Trend...........Up 6 to 10 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............3699 ft AGL. * Transport winds..........South 7 to 11 knots. * Ventilation Category.....Good (40689 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 58 to 68. Highs 78 to 88. Light winds. Minimum Humidity 45 to 55 pct. .SUNDAY...Mostly clear. Lows 59 to 69. Highs 83 to 93. Light winds. Minimum Humidity 32 to 42 pct. .MONDAY...Mostly clear. Lows 61 to 71. Highs 86 to 96. Light winds. Minimum Humidity 23 to 33 pct. .TUESDAY...Mostly clear. Lows 61 to 71. Highs 87 to 97. .WEDNESDAY...Mostly clear. Lows 60 to 70. Highs 86 to 96. NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL) $$ AZZ153-042215- 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- 334 AM MST Thu Sep 4 2025 .TODAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 pct. * Max Temperature..........74 to 84 degs. 24 hr Trend...........Down 3 to 6 degs. * Min Humidity.............27 to 37 pct. 24 hr Trend...........Up 8 to 12 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............8688 ft AGL. * Transport winds..........Northeast 8 knots shifting to the south 11 knots in the afternoon. * Ventilation Category.....Very good (95568 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (80-90 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Min Temperature..........50 to 60 degs. 24 hr Trend...........Down 2 to 5 degs. * Max Humidity.............81 to 91 pct. 24 hr Trend...........Up 21 to 25 pct. * Wind (20 ft/10-min avg)..Southwest around 10 mph in the evening becoming light. * 10000 ft MSL Wind........South around 10 mph shifting to the east after midnight. .FRIDAY... * Sky/Weather..............Mostly cloudy (70-80 pct). Chance of showers and thunderstorms. * Chance of Precip.........70 pct. * Chance of Thunder........50 pct. * Max Temperature..........68 to 78 degs. 24 hr Trend...........Down 3 to 7 degs. * Min Humidity.............52 to 62 pct. 24 hr Trend...........Up 19 to 23 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........East around 5 mph shifting to the south in the afternoon. * Mixing height............6483 ft AGL. * Transport winds..........East 7 knots shifting to the south 9 knots in the afternoon. * Ventilation Category.....Good (58347 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 51 to 61. Highs 68 to 78. Light winds. Minimum Humidity 53 to 63 pct. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 51 to 61. Highs 74 to 84. Light winds. Minimum Humidity 33 to 43 pct. .MONDAY...Mostly clear. Lows 53 to 63. Highs 75 to 85. Light winds. Minimum Humidity 27 to 37 pct. .TUESDAY...Mostly clear. Lows 53 to 63. Highs 76 to 86. .WEDNESDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 52 to 62. Highs 75 to 85. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-042215- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 334 AM MST Thu Sep 4 2025 .TODAY... * Sky/Weather..............Mostly cloudy (80-90 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Max Temperature..........65 to 75 degs. 24 hr Trend...........Down 9 to 13 degs. * Min Humidity.............55 to 65 pct. 24 hr Trend...........Up 32 to 36 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 10 to 15 mph. * Mixing height............5115 ft AGL. * Transport winds..........South 8 to 12 knots. * Ventilation Category.....Good (51150 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (80-90 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Min Temperature..........52 to 62 degs. 24 hr Trend...........Down 3 to 6 degs. * Max Humidity.............83 to 93 pct. 24 hr Trend...........Up 15 to 19 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southeast 5 to 10 mph. .FRIDAY... * Sky/Weather..............Mostly cloudy (75-85 pct). Showers likely and chance of thunderstorms. * Chance of Precip.........70 pct. * Chance of Thunder........50 pct. * Max Temperature..........64 to 74 degs. 24 hr Trend...........Down 1 deg. * Min Humidity.............63 to 73 pct. 24 hr Trend...........Up 10 to 14 pct. * Wind (20 ft/10-min avg)..Light winds becoming south around 10 mph in the afternoon. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............4327 ft AGL. * Transport winds..........South 7 to 10 knots. * Ventilation Category.....Fair (36779 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 53 to 63. Highs 67 to 77. Light winds. Minimum Humidity 61 to 71 pct. .SUNDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 53 to 63. Highs 72 to 82. Light winds. Minimum Humidity 45 to 55 pct. .MONDAY...Mostly clear. Lows 56 to 66. Highs 75 to 85. Light winds. Minimum Humidity 33 to 43 pct. .TUESDAY...Mostly clear. Lows 56 to 66. Highs 76 to 86. .WEDNESDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 55 to 65. Highs 76 to 86. 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