255
FNUS55 KTWC 190735
FWFTWC
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST ARIZONA
NATIONAL WEATHER SERVICE TUCSON AZ
1233 AM MST MON JAN 19 2026
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
20-FOOT WIND FORECAST OF 'LIGHT WINDS' INDICATES MAINLY
TERRAIN DRIVEN WINDS
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DISCUSSION
HIGH PRESSURE ALOFT WILL RESULT IN ABOVE NORMAL HIGH
TEMPERATURES AND DRY CONDITIONS THROUGH THE MIDDLE OF THE WEEK. 20-
FOOT WINDS WILL BE LESS THAN 15 MPH AND TERRAIN DRIVEN. MINIMUM RHS
WILL BE IN THE 12-20 PERCENT AT ALL ELEVATIONS TODAY, WITH AN
INCREASE OF 3-8 PERCENT ACROSS THE EASTERN HALF OF SOUTHEAST ARIZONA
TUESDAY THROUGH THURSDAY. A LOW PRESSURE SYSTEM MOVING INTO
SOUTHEAST ARIZONA FROM THE EASTERN PACIFIC WILL RESULT IN A CHANCE
OF VALLEY RAIN AND MOUNTAIN SNOW ACROSS SOUTHEAST ARIZONA FRIDAY
INTO THE WEEKEND, ALONG WITH COOLER TEMPERATURES AND INCREASING
MINIMUM RHS.
AZZ150-192215-
ARIZONA FIRE WEATHER ZONE 150
SONORAN FDRA-MOST OF PIMA COUNTY-SOUTH CENTRAL PINAL COUNTY-
TOHONO O'ODHAM NATION-TUCSON METROPOLITAN AREA-TDC-
1233 AM MST MON JAN 19 2026
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT) THEN BECOMING
MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........68 TO 78 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............11 TO 20 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
* MIXING HEIGHT............3082 FT AGL.
* TRANSPORT WINDS..........EAST 5 KNOTS SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION CATEGORY.....MARGINAL (15410 KNOT-FT).
TONIGHT
* SKY/WEATHER..............PARTLY CLOUDY (25-35 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........40 TO 50 DEGS.
24 HR TREND...........LITTLE CHANGE.
* MAX HUMIDITY.............41 TO 51 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING EAST AROUND 10 MPH
AFTER MIDNIGHT.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
TUESDAY
* SKY/WEATHER..............PARTLY CLOUDY (20-30 PCT) THEN BECOMING
MOSTLY SUNNY (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........67 TO 77 DEGS.
24 HR TREND...........DOWN 1 DEG.
* MIN HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........UP 1 TO 4 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH SHIFTING TO THE NORTH
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
* MIXING HEIGHT............3734 FT AGL.
* TRANSPORT WINDS..........NORTHEAST 7 KNOTS.
* VENTILATION CATEGORY.....FAIR (26138 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
WEDNESDAY
MOSTLY CLEAR. LOWS 38 TO 48. HIGHS 67 TO 77. LIGHT
WINDS. MINIMUM HUMIDITY 12 TO 21 PCT.
THURSDAY
PARTLY CLOUDY. LOWS 41 TO 51. HIGHS 67 TO 77. LIGHT
WINDS. MINIMUM HUMIDITY 12 TO 20 PCT.
FRIDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 43 TO 53.
HIGHS 62 TO 72. LIGHT WINDS. MINIMUM HUMIDITY 25 TO 35 PCT.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 43 TO
53. HIGHS 62 TO 72.
SUNDAY
PARTLY CLOUDY. LOWS 42 TO 52. HIGHS 61 TO 71.
NOTE TO USERS - ZONE 150 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE TUCSON INTERNATIONAL AIRPORT
LOCATION (2550 MSL)
AZZ151-192215-
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-
1233 AM MST MON JAN 19 2026
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........65 TO 75 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............11 TO 21 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING WEST AROUND 10 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 20 TO 25 MPH.
* MIXING HEIGHT............3591 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 5 KNOTS SHIFTING TO THE WEST 8
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (28728 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........35 TO 45 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MAX HUMIDITY.............43 TO 53 PCT.
24 HR TREND...........UP 6 TO 10 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING EAST AROUND 10 MPH
AFTER MIDNIGHT.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
TUESDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........62 TO 72 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MIN HUMIDITY.............15 TO 25 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST AROUND 10 MPH.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
* MIXING HEIGHT............3915 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 5 TO 9 KNOTS.
* VENTILATION CATEGORY.....FAIR (35235 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
WEDNESDAY
MOSTLY CLEAR. LOWS 33 TO 43. HIGHS 63 TO 73. LIGHT
WINDS. MINIMUM HUMIDITY 13 TO 23 PCT.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 47. HIGHS 63 TO 73. LIGHT
WINDS. MINIMUM HUMIDITY 13 TO 22 PCT.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 39 TO 49. HIGHS
57 TO 67. LIGHT WINDS. MINIMUM HUMIDITY 29 TO 39 PCT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 38 TO 48.
HIGHS 55 TO 65.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 37 TO 47.
HIGHS 54 TO 64.
NOTE TO USERS - ZONE 151 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE BUENOS AIRES N.W.R. LOCATION
(3500 MSL)
AZZ152-192215-
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-
1233 AM MST MON JAN 19 2026
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT) THEN BECOMING
MOSTLY SUNNY (20-30 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........62 TO 72 DEGS.
24 HR TREND...........UP 2 TO 5 DEGS.
* MIN HUMIDITY.............14 TO 24 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........WEST 20 TO 25 MPH.
* MIXING HEIGHT............3118 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 4 KNOTS SHIFTING TO THE WEST 6
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....MARGINAL (18708 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........30 TO 40 DEGS.
24 HR TREND...........DOWN 1 TO 4 DEGS.
* MAX HUMIDITY.............49 TO 59 PCT.
24 HR TREND...........UP 8 TO 12 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING EAST AROUND 10 MPH
AFTER MIDNIGHT.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
TUESDAY
* SKY/WEATHER..............MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........DOWN 3 TO 7 DEGS.
* MIN HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..EAST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
* MIXING HEIGHT............2055 FT AGL.
* TRANSPORT WINDS..........EAST 8 TO 10 KNOTS.
* VENTILATION CATEGORY.....FAIR (20550 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
WEDNESDAY
MOSTLY CLEAR. LOWS 29 TO 39. HIGHS 59 TO 69. LIGHT
WINDS. MINIMUM HUMIDITY 14 TO 24 PCT.
THURSDAY
PARTLY CLOUDY. LOWS 33 TO 43. HIGHS 59 TO 69. LIGHT
WINDS. MINIMUM HUMIDITY 13 TO 23 PCT.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 36 TO 46. HIGHS
55 TO 65. LIGHT WINDS. MINIMUM HUMIDITY 27 TO 37 PCT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 36 TO 46.
HIGHS 53 TO 63.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 34 TO 44.
HIGHS 51 TO 61.
NOTE TO USERS - ZONE 152 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE CHIRICAHUA N.M. LOCATION (5400 MSL)
AZZ153-192215-
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-
1233 AM MST MON JAN 19 2026
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (30-40 PCT) THEN BECOMING
MOSTLY SUNNY (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........54 TO 64 DEGS.
24 HR TREND...........UP 1 DEG.
* MIN HUMIDITY.............16 TO 23 PCT.
24 HR TREND...........LITTLE CHANGE.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS.
* 10000 FT MSL WIND........WEST AROUND 25 MPH DECREASING TO AROUND
15 MPH IN THE AFTERNOON.
* MIXING HEIGHT............3448 FT AGL.
* TRANSPORT WINDS..........WEST 6 TO 11 KNOTS.
* VENTILATION CATEGORY.....FAIR (37928 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........27 TO 37 DEGS.
24 HR TREND...........DOWN 2 TO 5 DEGS.
* MAX HUMIDITY.............44 TO 54 PCT.
24 HR TREND...........UP 4 TO 8 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING NORTHEAST AROUND 10
MPH AFTER MIDNIGHT.
* 10000 FT MSL WIND........WEST 5 TO 10 MPH.
TUESDAY
* SKY/WEATHER..............MOSTLY SUNNY (0-10 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........50 TO 60 DEGS.
24 HR TREND...........DOWN 3 TO 6 DEGS.
* MIN HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 3 TO 7 PCT.
* WIND (20 FT/10-MIN AVG)..EAST AROUND 10 MPH IN THE MORNING
BECOMING LIGHT.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
* MIXING HEIGHT............3841 FT AGL.
* TRANSPORT WINDS..........EAST 6 KNOTS SHIFTING TO THE SOUTHWEST 8
KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (30728 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
WEDNESDAY
MOSTLY CLEAR. LOWS 26 TO 36. HIGHS 52 TO 62. LIGHT
WINDS. MINIMUM HUMIDITY 12 TO 22 PCT.
THURSDAY
MOSTLY CLOUDY. LOWS 30 TO 40. HIGHS 51 TO 61. LIGHT
WINDS. MINIMUM HUMIDITY 13 TO 21 PCT.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS
32 TO 42. HIGHS 46 TO 56. LIGHT WINDS. MINIMUM HUMIDITY 26 TO
36 PCT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS 31 TO 41. HIGHS 43 TO 53.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 29 TO 39. HIGHS 44 TO 54.
NOTE TO USERS - ZONE 153 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE POINT OF PINES LOCATION (6040 MSL)
AZZ154-192215-
ARIZONA FIRE WEATHER ZONE 154
FOREST WOODLANDS FDRA INCLUDING THE SKY ISLANDS OF SOUTHEAST
ARIZONA ABOVE 5500 FEET-CORONADO NF-TDC-
1233 AM MST MON JAN 19 2026
TODAY
* SKY/WEATHER..............PARTLY CLOUDY (35-45 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........56 TO 66 DEGS.
24 HR TREND...........UP 1 TO 4 DEGS.
* MIN HUMIDITY.............13 TO 23 PCT.
24 HR TREND...........DOWN 1 PCT.
* WIND (20 FT/10-MIN AVG)..LIGHT WINDS BECOMING WEST AROUND 10 MPH
IN THE AFTERNOON.
* 10000 FT MSL WIND........WEST 20 TO 25 MPH.
* MIXING HEIGHT............4334 FT AGL.
* TRANSPORT WINDS..........WEST 8 TO 13 KNOTS.
* VENTILATION CATEGORY.....GOOD (45507 KNOT-FT).
TONIGHT
* SKY/WEATHER..............MOSTLY CLEAR (15-25 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MIN TEMPERATURE..........33 TO 43 DEGS.
24 HR TREND...........DOWN 3 TO 6 DEGS.
* MAX HUMIDITY.............35 TO 45 PCT.
24 HR TREND...........UP 9 TO 13 PCT.
* WIND (20 FT/10-MIN AVG)..NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
* 10000 FT MSL WIND........WEST 10 TO 15 MPH.
TUESDAY
* SKY/WEATHER..............MOSTLY SUNNY (10-20 PCT).
* CHANCE OF PRECIP.........0 PCT.
* CHANCE OF THUNDER........0 PCT.
* MAX TEMPERATURE..........52 TO 62 DEGS.
24 HR TREND...........DOWN 3 TO 7 DEGS.
* MIN HUMIDITY.............19 TO 29 PCT.
24 HR TREND...........UP 5 TO 9 PCT.
* WIND (20 FT/10-MIN AVG)..SOUTHEAST 10 TO 15 MPH.
* 10000 FT MSL WIND........WEST 15 TO 20 MPH.
* MIXING HEIGHT............4156 FT AGL.
* TRANSPORT WINDS..........SOUTHEAST 11 KNOTS SHIFTING TO THE
SOUTHWEST 9 KNOTS IN THE AFTERNOON.
* VENTILATION CATEGORY.....FAIR (37404 KNOT-FT).
FORECAST DAYS 3 THROUGH 7...
WINDS IN DAYS 3 THROUGH 5 ARE SURFACE 20 FT/10-MIN AVG
WEDNESDAY
MOSTLY CLEAR. LOWS 32 TO 42. HIGHS 53 TO 63. LIGHT
WINDS. MINIMUM HUMIDITY 15 TO 25 PCT.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 45. HIGHS 53 TO 63. LIGHT
WINDS. MINIMUM HUMIDITY 14 TO 24 PCT.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS 37 TO 47. HIGHS
48 TO 58. SOUTH WIND AROUND 15 MPH. MINIMUM HUMIDITY 28 TO
38 PCT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS 35 TO 45. HIGHS 45 TO 55.
SUNDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS 33 TO 43. HIGHS 43 TO 53.
NOTE TO USERS - ZONE 154 VENTILATION CATEGORY...MIXING HEIGHT AND
TRANSPORT WINDS ARE BASED ON THE AVERAGE ACROSS THE ZONE
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