808
FNUS56 KOTX 192123
FWFOTX
FIRE WEATHER PLANNING FORECAST FOR EASTERN WASHINGTON AND NORTH IDAHO
NATIONAL WEATHER SERVICE SPOKANE WA
223 PM PDT SAT SEP 19 2026
DISCUSSION
CENTRAL WA:
- WARM AND DRY THROUGH MONDAY, WITH LIGHT WINDS.
- POOR TO FAIR RELATIVE HUMIDITY RECOVERY IN THE MOUNTAINS WITH
FAIR TO GOOD HUMIDITY RECOVERY IN THE VALLEYS SATURDAY NIGHT.
EASTERN WA:
- WARM AND DRY THROUGH SUNDAY WITH MOSTLY LIGHT WINDS.
- SOUTHERLY WINDS WITH GUSTS 15-20 MPH IN THE OKANOGAN VALLEY IN
THE AFTERNOON AND EARLY EVENING.
- FAIR TO RELATIVE HUMIDITY RECOVERY IN THE MOUNTAINS WITH GOOD
TO EXCELLENT HUMIDITY RECOVERY IN THE VALLEYS SATURDAY NIGHT.
NORTH ID:
- WARM AND DRY THROUGH MONDAY WITH LIGHT WINDS.
- FAIR RELATIVE HUMIDITY RECOVERY IN THE MOUNTAINS WITH GOOD TO
EXCELLENT HUMIDITY RECOVERY IN THE VALLEYS SATURDAY NIGHT.
TEMPERATURES WILL TREND WARMER THROUGH EARLY NEXT WEEK AND
CONDITIONS WILL REMAIN DRY, RESULTING IN POOR TO FAIR RELATIVE
HUMIDITY RECOVERY IN THE MOUNTAINS. LIGHT WINDS AND MOSTLY CLEAR
SKIES EXPECTED THROUGH THE NEXT FEW DAYS.
***************************************************************
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE
10 MINUTE AVERAGES REFLECTING RAWS WIND.
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT DIVIDED BY 100.
CATEGORIES: LOW (< 200), MODERATE (200-500),
HIGH (500-800), AND VERY HIGH (> 800).
***************************************************************
WAZ696-698-201330-
EAST WASHINGTON CENTRAL CASCADES (ZONE 696)-
EAST WASHINGTON NORTH CASCADES (ZONE 698)-
INCLUDING THE CITIES OF STEVENS PASS, LAKE WENATCHEE AREA,
AND LEAVENWORTH
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-61 VALLEYS AND 45-55 MOUNTAINS.
* 24 HR TREND........2 DEGREES COOLER VALLEYS, AND 4 DEGREES WARMER
MOUNTAINS.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........15 PERCENT WETTER VALLEYS, AND 5 PERCENT
WETTER MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST UP TO 4 MPH IN THE EVENING
SHIFTING TO THE NORTHWEST OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 5 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (177).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....75-85 VALLEYS AND 65-75 MOUNTAINS.
* 24 HR TREND........3 DEGREES WARMER.
* MIN HUMIDITY........26-40 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH UP TO 6 MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (426).
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-62 VALLEYS AND 46-56 MOUNTAINS.
* MAX HUMIDITY........50-65 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST UP TO 5 MPH IN THE EVENING
SHIFTING TO THE NORTHWEST UP TO 4 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....WEST 3 TO 6 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (174).
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-86 VALLEYS AND 64-74 MOUNTAINS.
* MIN HUMIDITY........25-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST UP TO 4 MPH IN THE MORNING
SHIFTING TO THE SOUTHWEST UP TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (303) IN THE MORNING INCREASING TO
HIGH (515) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 49 TO 59 VALLEYS
42 TO
52 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...58 TO 68 MOUNTAINS. WEST
WIND UP TO 10 MPH.
WEDNESDAY...PARTLY CLOUDY. LOWS 45 TO 55 VALLEYS
37 TO
47 MOUNTAINS. HIGHS 63 TO 73 VALLEYS...52 TO 62 MOUNTAINS. WEST
WIND UP TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
53 VALLEYS...36 TO 46 MOUNTAINS. HIGHS 61 TO 71 VALLEYS...49 TO
59 MOUNTAINS. NORTH WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND HIGH MOUNTAIN
SNOW SHOWERS. LOWS 44 TO 54 VALLEYS...37 TO 47 MOUNTAINS. HIGHS
59 TO 69 VALLEYS...47 TO 57 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF HIGH MOUNTAIN SNOW
SHOWERS. LOWS 41 TO 51 VALLEYS...33 TO 43 MOUNTAINS. HIGHS 59 TO
69 VALLEYS...47 TO 57 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ697-201330-
EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL
RECREATION AREA (ZONE 697)-
INCLUDING THE CITY OF STEHEKIN
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-61 VALLEYS AND 44-54 MOUNTAINS.
* 24 HR TREND........3 DEGREES WARMER VALLEYS, AND 4 DEGREES COOLER
MOUNTAINS.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........15 PERCENT DRIER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST 3 TO 5 MPH IN THE EVENING
SHIFTING TO THE NORTHEAST AROUND 3 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH 3 TO 6 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (156).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....79-89 VALLEYS AND 67-77 MOUNTAINS.
* 24 HR TREND........8 DEGREES WARMER.
* MIN HUMIDITY........24-35 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH 3 TO 7 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (197) IN THE MORNING INCREASING TO
MODERATE (405) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....53-62 VALLEYS AND 45-55 MOUNTAINS.
* MAX HUMIDITY........50-60 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 5 MPH IN THE EVENING SHIFTING TO
THE NORTHWEST AROUND 3 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 6 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (159).
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-87 VALLEYS AND 64-74 MOUNTAINS.
* MIN HUMIDITY........25-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST 3 TO 8 MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (266) IN THE MORNING INCREASING TO
MODERATE (494) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 49 TO 58 VALLEYS
40 TO
50 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...57 TO 67 MOUNTAINS. WEST
WIND UP TO 10 MPH.
WEDNESDAY...PARTLY CLOUDY. LOWS 44 TO 53 VALLEYS
36 TO
46 MOUNTAINS. HIGHS 64 TO 74 VALLEYS...52 TO 62 MOUNTAINS. WEST
WIND 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 44 TO
53 VALLEYS...35 TO 45 MOUNTAINS. HIGHS 62 TO 72 VALLEYS...50 TO
60 MOUNTAINS. WEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND HIGH MOUNTAIN
SNOW SHOWERS. LOWS 45 TO 53 VALLEYS...36 TO 46 MOUNTAINS. HIGHS
60 TO 70 VALLEYS...48 TO 58 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN AND HIGH MOUNTAIN
SNOW SHOWERS. LOWS 42 TO 51 VALLEYS...33 TO 43 MOUNTAINS. HIGHS
61 TO 71 VALLEYS...49 TO 59 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ704-201330-
METHOW VALLEY (ZONE 704)-
INCLUDING THE CITIES OF MAZAMA, WINTHROP, AND TWISP
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-57.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........UNCHANGED.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHEAST UP TO 5 MPH IN THE EVENING SHIFTING
TO THE NORTH UP TO 3 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (166).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-86.
* 24 HR TREND........1 DEGREE WARMER.
* MIN HUMIDITY........21-30 PERCENT.
* 24 HR TREND........1 PERCENT WETTER.
* 20-FOOT WINDS.......NORTHEAST UP TO 4 MPH IN THE MORNING SHIFTING
TO THE SOUTHEAST 3 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (156) IN THE MORNING INCREASING TO
MODERATE (366) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-58.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHEAST UP TO 5 MPH IN THE EVENING SHIFTING
TO THE NORTHWEST UP TO 3 MPH OVERNIGHT.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (139).
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-86.
* MIN HUMIDITY........20-30 PERCENT.
* 20-FOOT WINDS.......NORTHWEST UP TO 3 MPH IN THE MORNING SHIFTING
TO THE SOUTHEAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (221) IN THE MORNING INCREASING TO
MODERATE (430) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS 48 TO 57. HIGHS 73 TO 82. WEST
WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 43 TO 53. HIGHS 68 TO 76. WEST
WIND UP TO 5 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 42 TO 51. HIGHS 63 TO 71.
NORTHWEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS 43 TO
52. HIGHS 61 TO 70.
SATURDAY
PARTLY CLOUDY. LOWS 40 TO 49. HIGHS 61 TO 69.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ703-201330-
OKANOGAN VALLEY (ZONE 703)-
INCLUDING THE CITIES OF CONCONULLY AND OMAK
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-57.
* 24 HR TREND........2 DEGREES WARMER.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........15 PERCENT WETTER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTH UP TO 6 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (153).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-85.
* 24 HR TREND........2 DEGREES COOLER.
* MIN HUMIDITY........26-35 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......SOUTH UP TO 9 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (197) IN THE MORNING INCREASING TO
MODERATE (459) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-58.
* MAX HUMIDITY........55-65 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTH 3 TO 6 MPH IN THE EVENING SHIFTING TO
THE NORTH UP TO 4 MPH OVERNIGHT.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (136).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-85.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......NORTH UP TO 3 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (147) IN THE MORNING INCREASING TO
MODERATE (386) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS IN THE 50S. HIGHS 73 TO 81.
NORTHWEST WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 68 TO 76. WEST
WIND UP TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 47 TO 52. HIGHS 62 TO 71.
NORTHWEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS NEAR
50. HIGHS 61 TO 70.
SATURDAY
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 40S. HIGHS
60 TO 69.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ702-201330-
COLVILLE RESERVATION (ZONE 702)-
INCLUDING THE CITIES OF NESPELEM AND KELLER
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-56.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........5 PERCENT WETTER VALLEYS, AND 15 PERCENT
WETTER MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 4 MPH IN THE EVENING SHIFTING TO
THE NORTHEAST OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH 3 TO 5 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (161).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....75-85 VALLEYS AND 68-78 MOUNTAINS.
* 24 HR TREND........2 DEGREES WARMER.
* MIN HUMIDITY........25-35 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST 3 TO 5 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH 3 TO 6 MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (384).
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........50-65 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 4 MPH IN THE EVENING SHIFTING
TO THE NORTHEAST 3 TO 5 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHEAST 3 TO 4 MPH IN THE EVENING SHIFTING
TO THE EAST 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (133).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-87 VALLEYS AND 69-79 MOUNTAINS.
* MIN HUMIDITY........24-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 5 MPH IN THE MORNING SHIFTING
TO THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (355) IN THE MORNING INCREASING TO
HIGH (597) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 52 TO 58. HIGHS 72 TO 82 VALLEYS
66 TO 75 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 48 TO 54. HIGHS 66 TO
76 VALLEYS...59 TO 68 MOUNTAINS. SOUTH WIND UP TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 45 TO 53. HIGHS 63 TO
73 VALLEYS...56 TO 65 MOUNTAINS. NORTHEAST WIND UP TO 5 MPH.
FRIDAY THROUGH SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN
SHOWERS. LOWS 44 TO 53 VALLEYS...39 TO 48 MOUNTAINS. HIGHS 60 TO
70 VALLEYS...52 TO 62 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ699-201330-
OKANOGAN HIGHLANDS AND KETTLE MOUNTAINS (ZONE 699)-
INCLUDING THE CITIES OF REPUBLIC AND CURLEW
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-54.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* 24 HR TREND........10 PERCENT WETTER VALLEYS, AND 5 PERCENT
WETTER MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 4 MPH IN THE EVENING SHIFTING TO
THE SOUTHEAST UP TO 3 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH UP TO 4 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (194).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....75-85 VALLEYS AND 68-78 MOUNTAINS.
* 24 HR TREND........1 DEGREE WARMER.
* MIN HUMIDITY........26-35 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 5 PERCENT WETTER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH UP TO 6 MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (268) IN THE MORNING INCREASING TO
MODERATE (471) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....48-54.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 50-65 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 4 MPH IN THE EVENING SHIFTING TO
THE EAST OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH UP TO 5 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (178).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-87 VALLEYS AND 69-78 MOUNTAINS.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST UP TO 4 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST UP TO 5 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (336) IN THE MORNING INCREASING TO
HIGH (609) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 49 TO 55. HIGHS 74 TO 84 VALLEYS
66 TO 74 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 46 TO 52. HIGHS 68 TO
78 VALLEYS...60 TO 68 MOUNTAINS. SOUTHWEST WIND UP TO 5 MPH.
THURSDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
49. HIGHS 63 TO 73 VALLEYS...55 TO 64 MOUNTAINS. EAST WIND UP TO
5 MPH.
FRIDAY THROUGH SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN
SHOWERS. LOWS 39 TO 49. HIGHS 60 TO 70 VALLEYS...52 TO
61 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ700-701-201330-
SELKIRK MOUNTAINS OF NORTHEAST WASHINGTON (ZONE 700)-
FOOTHILLS OF NORTHEAST WASHINGTON (ZONE 701)-
INCLUDING THE CITIES OF METALINE FALLS, IONE, COLVILLE,
DEER PARK, AND NEWPORT
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-54.
* 24 HR TREND........4 DEGREES WARMER VALLEYS, AND 2 DEGREES COOLER
MOUNTAINS.
* MAX HUMIDITY........70-80 PERCENT VALLEYS AND 60-75 PERCENT
MOUNTAINS.
* 24 HR TREND........20 PERCENT DRIER VALLEYS, AND 10 PERCENT
WETTER MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 3 MPH IN THE EVENING SHIFTING TO
THE NORTHEAST OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST UP TO 4 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 0 TO 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (100).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-84 VALLEYS AND 67-77 MOUNTAINS.
* 24 HR TREND........2 DEGREES WARMER.
* MIN HUMIDITY........26-30 PERCENT VALLEYS AND 30-40 PERCENT
MOUNTAINS.
* 24 HR TREND........5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST UP TO 3 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 4 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH UP TO 5 MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (328).
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...LIGHT WINDS IN THE EVENING BECOMING
NORTHEAST UP TO 3 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHEAST 3 TO 4 MPH IN THE EVENING SHIFTING
TO THE NORTHEAST 3 TO 5 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (120).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....78-85 VALLEYS AND 68-78 MOUNTAINS.
* MIN HUMIDITY........25-30 PERCENT VALLEYS AND 29-40 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 4 MPH IN THE MORNING
SHIFTING TO THE SOUTH UP TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 5 MPH IN THE MORNING SHIFTING
TO THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (320) IN THE MORNING INCREASING TO
HIGH (576) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 48 TO 57. HIGHS 75 TO 82 VALLEYS
65 TO 75 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 47 TO 53. HIGHS 68 TO
75 VALLEYS...59 TO 67 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 44 TO 50. HIGHS 65 TO
72 VALLEYS...56 TO 64 MOUNTAINS. SOUTHEAST WIND UP TO 5 MPH.
FRIDAY THROUGH SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN
SHOWERS. LOWS 41 TO 51. HIGHS 60 TO 70 VALLEYS...52 TO
62 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
IDZ101-201330-
NORTHERN AND CENTRAL IDAHO PANHANDLE (ZONE 101)-
INCLUDING THE CITIES OF ST. MARIES, RATHDRUM PRAIRIE,
SILVER VALLEY, BONNERS FERRY, AND PRIEST LAKE
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-55.
* 24 HR TREND........2 DEGREES WARMER.
* MAX HUMIDITY........71-90 PERCENT VALLEYS AND 60-75 PERCENT
MOUNTAINS.
* 24 HR TREND........20 PERCENT DRIER VALLEYS, AND 10 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST UP TO 3 MPH IN THE EVENING
SHIFTING TO THE EAST OVERNIGHT.
* RIDGES/UPR SLOPES....WEST 3 TO 4 MPH IN THE EVENING SHIFTING TO
THE SOUTHEAST OVERNIGHT.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 0 TO 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (80).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-82 VALLEYS AND 67-77 MOUNTAINS.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........30-40 PERCENT.
* 24 HR TREND........5 PERCENT DRIER VALLEYS, AND 10 PERCENT DRIER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST UP TO 4 MPH IN THE MORNING SHIFTING TO
THE SOUTHWEST 3 TO 4 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST UP TO 4 MPH IN THE MORNING
SHIFTING TO THE WEST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (277).
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST UP TO 6 MPH.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (89).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-84 VALLEYS AND 68-78 MOUNTAINS.
* MIN HUMIDITY........29-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST 3 TO 4 MPH IN THE MORNING SHIFTING TO
THE SOUTHWEST 3 TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (339) IN THE MORNING INCREASING TO
HIGH (606) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY...PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 75 TO 81 VALLEYS
66 TO 76 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. LOWS 46 TO 56. HIGHS
66 TO 74 VALLEYS...60 TO 70 MOUNTAINS. SOUTH WIND UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO 53.
HIGHS 64 TO 70 VALLEYS...56 TO 66 MOUNTAINS.
SATURDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
51. HIGHS 60 TO 66 VALLEYS...52 TO 62 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ707-201330-
WESTERN COLUMBIA BASIN (ZONE 707)-
INCLUDING THE CITIES OF MOSES LAKE AND EPHRATA
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-58.
* 24 HR TREND........5 DEGREES WARMER.
* MAX HUMIDITY........65-80 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTH UP TO 6 MPH IN THE EVENING SHIFTING TO
THE NORTHEAST UP TO 5 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (136).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....81-85.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........25-35 PERCENT.
* 24 HR TREND........3 PERCENT DRIER.
* 20-FOOT WINDS.......NORTHEAST UP TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (291).
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-59.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......WEST UP TO 4 MPH IN THE EVENING SHIFTING TO
THE NORTH 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (99).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....82-86.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......NORTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (128) IN THE MORNING INCREASING TO
MODERATE (498) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS 53 TO 59. HIGHS NEAR 80. WEST WIND
UP TO 10 MPH.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. LOWS 48 TO 55. HIGHS
69 TO 77. NORTHWEST WIND UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. LOWS 48 TO 53. HIGHS NEAR 70.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 51. HIGHS IN THE MID TO
UPPER 60S.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ708-201330-
EASTERN COLUMBIA BASIN - PALOUSE - SPOKANE AREA (ZONE 708)-
INCLUDING THE CITIES OF SPOKANE, PULLMAN, RITZVILLE, WILBUR,
AND CHENEY
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-55.
* 24 HR TREND........4 DEGREES WARMER.
* MAX HUMIDITY........65-80 PERCENT.
* 24 HR TREND........10 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHWEST UP TO 5 MPH IN THE EVENING SHIFTING
TO THE EAST OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (132).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....81-88.
* 24 HR TREND........2 DEGREES WARMER.
* MIN HUMIDITY........23-29 PERCENT.
* 24 HR TREND........3 PERCENT DRIER.
* 20-FOOT WINDS.......EAST 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (301).
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-56.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......EAST UP TO 6 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (120).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....82-89.
* MIN HUMIDITY........22-27 PERCENT.
* 20-FOOT WINDS.......EAST 3 TO 7 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (251) IN THE MORNING INCREASING TO
HIGH (629) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS 52 TO 58. HIGHS 78 TO 84. SOUTH
WIND UP TO 10 MPH.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. LOWS 47 TO 55. HIGHS
70 TO 78. SOUTHEAST WIND UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. LOWS 47 TO 53. HIGHS 67 TO 74.
SATURDAY
PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 65 TO 72.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ709-201330-
LOWER PALOUSE - SNAKE RIVER (ZONE 709)-
INCLUDING THE CITY OF POMEROY
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....53-57.
* 24 HR TREND........4 DEGREES WARMER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........10 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (93).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....79-89.
* 24 HR TREND........7 DEGREES WARMER.
* MIN HUMIDITY........25-35 PERCENT.
* 24 HR TREND........1 PERCENT DRIER.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 7 MPH IN THE MORNING SHIFTING
TO THE NORTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (287).
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......EAST 3 TO 5 MPH IN THE EVENING SHIFTING TO
THE SOUTHEAST 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......1500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (95).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....80-90.
* MIN HUMIDITY........24-30 PERCENT.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 8 MPH IN THE MORNING SHIFTING
TO THE NORTHWEST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (397).
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 50S TO LOWER 60S. HIGHS
77 TO 86. SOUTHWEST WIND UP TO 10 MPH.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS
70 TO 80. WEST WIND UP TO 10 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS IN THE
LOWER TO MID 50S. HIGHS 66 TO 76.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 63 TO 73.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ705-706-201330-
FOOTHILLS OF CENTRAL WASHINGTON CASCADES (ZONE 705)-
WATERVILLE PLATEAU (ZONE 706)-
INCLUDING THE CITIES OF CHELAN, WENATCHEE, WATERVILLE,
AND GRAND COULEE
223 PM PDT SAT SEP 19 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-60.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........5 PERCENT WETTER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHWEST UP TO 6 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (213).
SUNDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-86.
* 24 HR TREND........3 DEGREES WARMER.
* MIN HUMIDITY........25-35 PERCENT.
* 24 HR TREND........1 PERCENT DRIER.
* 20-FOOT WINDS.......EAST UP TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (145) IN THE MORNING INCREASING TO
MODERATE (355) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....53-61.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTH UP TO 5 MPH IN THE EVENING SHIFTING TO
THE NORTHWEST UP TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (193).
MONDAY
* SKY/WEATHER.........SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....78-88.
* MIN HUMIDITY........24-30 PERCENT.
* 20-FOOT WINDS.......NORTH UP TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (161) IN THE MORNING INCREASING TO HIGH
(545) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
PARTLY CLOUDY. LOWS 52 TO 60. HIGHS 73 TO 82. WEST
WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 47 TO 56. HIGHS 67 TO 76. WEST
WIND UP TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 46 TO 55. HIGHS 63 TO 73.
NORTHWEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. LOWS 47 TO 55. HIGHS 61 TO 71.
SATURDAY
PARTLY CLOUDY. LOWS 44 TO 52. HIGHS 60 TO 70.
.8 TO 14 DAY OUTLOOK FOR SEP 27 - OCT 03, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
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