


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
891 FNUS55 KTWC 311035 FWFTWC Fire Weather Planning Forecast for Southeast Arizona National Weather Service Tucson AZ 335 AM MST Sun Aug 31 2025 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20-FOOT WIND FORECAST OF `LIGHT WINDS` INDICATES MAINLY TERRAIN DRIVEN WINDS +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .DISCUSSION... Moisture increases east of Tucson today and across southeastern Arizona Monday, with minimum relative humidity values above 20 percent becoming widespread Monday. Daily chances for thunderstorms through this week with this increase in moisture, with day to day variability. Gusty outflow winds possible with any thunderstorm. East to southeast winds of 12-17 mph develop Monday, potentially lingering through Tuesday. AZZ150-312215- Arizona Fire Weather Zone 150 Sonoran FDRA-Most of Pima County-South Central Pinal County- Tohono O`odham Nation-Tucson Metropolitan area-TDC- 335 AM MST Sun Aug 31 2025 .TODAY... * Sky/Weather..............Mostly sunny (20-30 pct) then becoming partly cloudy (30-40 pct). * Chance of Precip.........10 pct. * Chance of Thunder........0 pct. * Max Temperature..........98 to 108 degs. 24 hr Trend...........Up 2 to 5 degs. * Min Humidity.............16 to 26 pct. 24 hr Trend...........Little change. * Wind (20 ft/10-min avg)..Light winds. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............11417 ft AGL. * Transport winds..........Southeast 7 knots shifting to the northeast in the afternoon. * Ventilation Category.....Very good (79919 knot-ft). .TONIGHT... * Sky/Weather..............Partly cloudy (40-50 pct) then becoming mostly cloudy (45-55 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........10 pct. * Chance of Thunder........10 pct. * Min Temperature..........74 to 84 degs. 24 hr Trend...........Up 1 to 4 degs. * Max Humidity.............49 to 59 pct. 24 hr Trend...........Up 13 to 17 pct. * Wind (20 ft/10-min avg)..Northwest around 10 mph shifting to the southeast after midnight. * 10000 ft MSL Wind........East 10 to 15 mph. .LABOR DAY... * Sky/Weather..............Partly cloudy (45-55 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Max Temperature..........96 to 106 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............23 to 33 pct. 24 hr Trend...........Up 7 to 11 pct. * Wind (20 ft/10-min avg)..Southeast 10 to 15 mph. * 10000 ft MSL Wind........East 15 to 20 mph. * Mixing height............9958 ft AGL. * Transport winds..........Southeast 13 to 15 knots. * Ventilation Category.....Excellent (149370 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 74 to 84. Highs 94 to 104. Light winds. Minimum Humidity 22 to 32 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 72 to 82. Highs 93 to 103. Light winds. Minimum Humidity 24 to 34 pct. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 71 to 81. Highs 91 to 101. Light winds. Minimum Humidity 30 to 40 pct. .FRIDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 68 to 78. Highs 88 to 98. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 68 to 78. Highs 86 to 96. NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT LOCATION (2550 MSL) $$ AZZ151-312215- 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- 335 AM MST Sun Aug 31 2025 .TODAY... * Sky/Weather..............Partly cloudy (40-50 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 pct. * Max Temperature..........90 to 100 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............21 to 31 pct. 24 hr Trend...........Up 1 to 4 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............11127 ft AGL. * Transport winds..........East 10 knots. * Ventilation Category.....Excellent (111270 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (50-60 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........20 pct. * Min Temperature..........65 to 75 degs. 24 hr Trend...........Little change. * Max Humidity.............67 to 77 pct. 24 hr Trend...........Up 17 to 21 pct. * Wind (20 ft/10-min avg)..Southeast 10 to 15 mph. * 10000 ft MSL Wind........Northeast 10 to 15 mph. .LABOR DAY... * Sky/Weather..............Mostly cloudy (55-65 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........87 to 97 degs. 24 hr Trend...........Down 2 to 5 degs. * Min Humidity.............27 to 37 pct. 24 hr Trend...........Up 7 to 11 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........East 15 to 20 mph. * Mixing height............8565 ft AGL. * Transport winds..........East 15 knots. * Ventilation Category.....Excellent (128475 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 65 to 75. Highs 87 to 97. East wind around 15 mph. Minimum Humidity 25 to 35 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 63 to 73. Highs 87 to 97. Light winds. Minimum Humidity 24 to 34 pct. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 62 to 72. Highs 86 to 96. Light winds. Minimum Humidity 31 to 41 pct. .FRIDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 61 to 71. Highs 83 to 93. .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 61 to 71. Highs 81 to 91. NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION (3500 MSL) $$ AZZ152-312215- 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- 335 AM MST Sun Aug 31 2025 .TODAY... * Sky/Weather..............Mostly cloudy (50-60 pct) then becoming partly cloudy (45-55 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........88 to 98 degs. 24 hr Trend...........Up 1 deg. * Min Humidity.............22 to 32 pct. 24 hr Trend...........Up 3 to 7 pct. * Wind (20 ft/10-min avg)..Southeast around 10 mph. * 10000 ft MSL Wind........Southeast 5 to 10 mph. * Mixing height............7711 ft AGL. * Transport winds..........Southeast 11 to 12 knots. * Ventilation Category.....Very good (92532 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (60-70 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Min Temperature..........64 to 74 degs. 24 hr Trend...........Little change. * Max Humidity.............66 to 76 pct. 24 hr Trend...........Up 12 to 16 pct. * Wind (20 ft/10-min avg)..East 10 to 20 mph. * 10000 ft MSL Wind........Northeast 10 to 15 mph. .LABOR DAY... * Sky/Weather..............Mostly cloudy (55-65 pct). Slight chance of showers and thunderstorms. * Chance of Precip.........20 pct. * Chance of Thunder........20 pct. * Max Temperature..........85 to 95 degs. 24 hr Trend...........Down 2 to 5 degs. * Min Humidity.............27 to 37 pct. 24 hr Trend...........Up 3 to 6 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........East 15 to 20 mph. * Mixing height............6161 ft AGL. * Transport winds..........East 15 to 17 knots. * Ventilation Category.....Excellent (104737 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 64 to 74. Highs 85 to 95. East wind around 15 mph. Minimum Humidity 21 to 31 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 87 to 97. Light winds. Minimum Humidity 17 to 27 pct. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 61 to 71. Highs 87 to 97. Light winds. Minimum Humidity 22 to 32 pct. .FRIDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 60 to 70. Highs 83 to 93. .SATURDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 61 to 71. Highs 81 to 91. NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL) $$ AZZ153-312215- 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- 335 AM MST Sun Aug 31 2025 .TODAY... * Sky/Weather..............Partly cloudy (30-40 pct) then becoming mostly cloudy (45-55 pct). Chance of showers and thunderstorms. * Chance of Precip.........50 pct. * Chance of Thunder........50 pct. * Max Temperature..........78 to 88 degs. 24 hr Trend...........Little change. * Min Humidity.............29 to 39 pct. 24 hr Trend...........Up 7 to 11 pct. * Wind (20 ft/10-min avg)..East around 10 mph shifting to the south in the afternoon. * 10000 ft MSL Wind........Southeast around 5 mph shifting to the south in the afternoon. * Mixing height............9948 ft AGL. * Transport winds..........Southeast 9 knots. * Ventilation Category.....Very good (89532 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (55-65 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Min Temperature..........55 to 65 degs. 24 hr Trend...........Down 1 deg. * Max Humidity.............70 to 80 pct. 24 hr Trend...........Up 19 to 23 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........Northwest around 10 mph shifting to the northeast after midnight. .LABOR DAY... * Sky/Weather..............Mostly cloudy (50-60 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Max Temperature..........75 to 85 degs. 24 hr Trend...........Down 1 to 4 degs. * Min Humidity.............35 to 45 pct. 24 hr Trend...........Up 3 to 6 pct. * Wind (20 ft/10-min avg)..Southeast 10 to 15 mph. * 10000 ft MSL Wind........East 5 to 10 mph. * Mixing height............9106 ft AGL. * Transport winds..........East 11 to 16 knots. * Ventilation Category.....Excellent (145696 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 55 to 65. Highs 75 to 85. East wind around 15 mph. Minimum Humidity 31 to 41 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 54 to 64. Highs 77 to 87. Light winds. Minimum Humidity 25 to 35 pct. .THURSDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 54 to 64. Highs 77 to 87. Light winds. Minimum Humidity 22 to 32 pct. .FRIDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 53 to 63. Highs 75 to 85. .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 53 to 63. Highs 72 to 82. NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL) $$ AZZ154-312215- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 335 AM MST Sun Aug 31 2025 .TODAY... * Sky/Weather..............Mostly cloudy (50-60 pct). Chance of showers and thunderstorms. * Chance of Precip.........40 pct. * Chance of Thunder........40 pct. * Max Temperature..........78 to 88 degs. 24 hr Trend...........Little change. * Min Humidity.............33 to 43 pct. 24 hr Trend...........Up 3 to 6 pct. * Wind (20 ft/10-min avg)..East around 10 mph. * 10000 ft MSL Wind........East 10 to 15 mph. * Mixing height............9456 ft AGL. * Transport winds..........East 12 knots. * Ventilation Category.....Excellent (113472 knot-ft). .TONIGHT... * Sky/Weather..............Mostly cloudy (60-70 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 1 deg. * Max Humidity.............69 to 79 pct. 24 hr Trend...........Up 17 to 21 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........Northeast 10 to 15 mph. .LABOR DAY... * Sky/Weather..............Mostly cloudy (65-75 pct). Chance of showers and thunderstorms. * Chance of Precip.........30 pct. * Chance of Thunder........30 pct. * Max Temperature..........75 to 85 degs. 24 hr Trend...........Down 2 to 5 degs. * Min Humidity.............36 to 46 pct. 24 hr Trend...........Up 5 to 9 pct. * Wind (20 ft/10-min avg)..East 10 to 15 mph. * 10000 ft MSL Wind........East 15 to 20 mph. * Mixing height............8221 ft AGL. * Transport winds..........East 15 knots. * Ventilation Category.....Excellent (123315 knot-ft). .Forecast days 3 through 7...... Winds in Days 3 through 5 are surface 20 ft/10-min avg .TUESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 58 to 68. Highs 75 to 85. East wind around 15 mph. Minimum Humidity 28 to 38 pct. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 57 to 67. Highs 76 to 86. Light winds. Minimum Humidity 23 to 33 pct. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows 57 to 67. Highs 76 to 86. Light winds. Minimum Humidity 32 to 42 pct. .FRIDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 55 to 65. Highs 73 to 83. .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 56 to 66. Highs 71 to 81. 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