528
FNUS56 KOTX 231011
FWFOTX
FIRE WEATHER PLANNING FORECAST FOR EASTERN WASHINGTON AND NORTH IDAHO
NATIONAL WEATHER SERVICE SPOKANE WA
311 AM PDT WED SEP 23 2026
DISCUSSION
CENTRAL WA:
- MILD AND DRY THROUGH THURSDAY, WITH POOR TO FAIR HUMIDITIES
RECOVERIES IN THE MOUNTAINS.
- BREEZY WEST TO SOUTHWEST WINDS WEDNESDAY AFTERNOON.
- WETTER AND BREEZIER SYSTEM THURSDAY NIGHT INTO FRIDAY.
EASTERN WA:
- MILD AND DRY THROUGH THURSDAY.
- BREEZY WEST TO SOUTHWEST WINDS WEDNESDAY AFTERNOON.
- WETTER AND BREEZIER SYSTEM THURSDAY NIGHT INTO FRIDAY.
NORTH ID:
- MILD AND DRY THROUGH THURSDAY.
- BREEZY WEST TO SOUTHWEST WINDS WEDNESDAY AFTERNOON.
- WETTER AND BREEZIER SYSTEM THURSDAY NIGHT INTO FRIDAY.
TEMPERATURES WILL BE MILD THE NEXT COUPLES, WITH THURSDAY THE
WARMEST OF THE TWO. THIS WILL CONTINUE TO BRING POOR TO FAIR
RELATIVE HUMIDITY RECOVERY IN THE CENTRAL WA MOUNTAINS AND FAIR TO
GOOD RELATIVE HUMIDITY RECOVERY ACROSS THE EASTERN WA AND NORTH
IDAHO MOUNTAINS. A SYSTEM THURSDAY NIGHT INTO FRIDAY WILL BRING
INCREASING PRECIPITATION AND WINDS. THIS ALSO COMES WITH A CHANCE
OF HIGH MOUNTAIN SNOW AND A CHANCE FOR THUNDERSTORMS.
***************************************************************
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).
***************************************************************
WAZ696-698-240130-
EAST WASHINGTON CENTRAL CASCADES (ZONE 696)-
EAST WASHINGTON NORTH CASCADES (ZONE 698)-
INCLUDING THE CITIES OF STEVENS PASS, LAKE WENATCHEE AREA,
AND LEAVENWORTH
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....65-75 VALLEYS AND 53-63 MOUNTAINS.
* 24 HR TREND........7 DEGREES COOLER.
* MIN HUMIDITY........35-50 PERCENT.
* 24 HR TREND........15 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST 3 TO 8 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (365) IN THE MORNING INCREASING TO
HIGH (611) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....44-54 VALLEYS AND 36-46 MOUNTAINS.
* 24 HR TREND........5 DEGREES COOLER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........15 PERCENT DRIER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST UP TO 7 MPH.
* RIDGES/UPR SLOPES....WEST 3 TO 7 MPH IN THE EVENING SHIFTING TO
THE SOUTH 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (257) IN THE EVENING DECREASING TO
LOW (33) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....63-73 VALLEYS AND 52-62 MOUNTAINS.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 40-55 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST UP TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST UP TO 7 MPH.
* MIXING HEIGHT.......3500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (237) IN THE MORNING INCREASING TO
MODERATE (447) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
RAIN SHOWERS, HIGH MOUNTAIN SNOW SHOWERS AND A CHANCE
OF THUNDERSTORMS. LOWS 47 TO 57 VALLEYS...39 TO 49 MOUNTAINS.
HIGHS 54 TO 64 VALLEYS...43 TO 53 MOUNTAINS. WEST WIND 5 TO
15 MPH.
SATURDAY
PARTLY CLOUDY. A CHANCE OF HIGH MOUNTAIN SNOW
SHOWERS. LOWS 40 TO 50 VALLEYS...33 TO 43 MOUNTAINS. HIGHS 55 TO
65 VALLEYS...43 TO 53 MOUNTAINS. NORTHWEST WIND 5 TO 15 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 39 TO 49 VALLEYS
31 TO
41 MOUNTAINS. HIGHS 58 TO 68 VALLEYS...46 TO 56 MOUNTAINS. NORTH
WIND UP TO 5 MPH.
MONDAY...PARTLY CLOUDY. LOWS 40 TO 50 VALLEYS
33 TO
43 MOUNTAINS. HIGHS 58 TO 68 VALLEYS...46 TO 56 MOUNTAINS.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
52 VALLEYS...34 TO 44 MOUNTAINS. HIGHS 58 TO 68 VALLEYS...46 TO
56 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ697-240130-
EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL
RECREATION AREA (ZONE 697)-
INCLUDING THE CITY OF STEHEKIN
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....65-75 VALLEYS AND 53-63 MOUNTAINS.
* 24 HR TREND........1 DEGREE COOLER VALLEYS, AND 6 DEGREES COOLER
MOUNTAINS.
* MIN HUMIDITY........35-50 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 5 PERCENT DRIER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST 4 TO 10 MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (326) IN THE MORNING INCREASING TO
HIGH (535) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....44-54 VALLEYS AND 36-46 MOUNTAINS.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........15 PERCENT DRIER VALLEYS, AND 5 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 3 TO 8 MPH IN THE EVENING SHIFTING
TO THE SOUTHEAST OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (196).
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....66-76 VALLEYS AND 54-64 MOUNTAINS.
* MIN HUMIDITY........29-40 PERCENT VALLEYS AND 35-50 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST 3 TO 8 MPH.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (244) IN THE MORNING INCREASING TO
MODERATE (449) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS, HIGH MOUNTAIN SNOW SHOWERS AND A
CHANCE OF THUNDERSTORMS. LOWS 48 TO 58 VALLEYS...39 TO
49 MOUNTAINS. HIGHS 55 TO 65 VALLEYS...44 TO 54 MOUNTAINS. WEST
WIND 5 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. A CHANCE OF RAIN AND HIGH MOUNTAIN
SNOW SHOWERS. LOWS 42 TO 51 VALLEYS...33 TO 43 MOUNTAINS. HIGHS
56 TO 66 VALLEYS...43 TO 53 MOUNTAINS. WEST WIND 5 TO 15 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 39 TO 49 VALLEYS
31 TO
41 MOUNTAINS. HIGHS 59 TO 69 VALLEYS...47 TO 57 MOUNTAINS. WEST
WIND UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 40 TO
50 VALLEYS...32 TO 42 MOUNTAINS. HIGHS 59 TO 69 VALLEYS...47 TO
57 MOUNTAINS.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
51 VALLEYS...34 TO 44 MOUNTAINS. HIGHS 60 TO 70 VALLEYS...48 TO
58 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ704-240130-
METHOW VALLEY (ZONE 704)-
INCLUDING THE CITIES OF MAZAMA, WINTHROP, AND TWISP
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....67-76.
* 24 HR TREND........5 DEGREES COOLER.
* MIN HUMIDITY........27-30 PERCENT.
* 24 HR TREND........4 PERCENT WETTER.
* 20-FOOT WINDS.......NORTHWEST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH 3 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (356) IN THE MORNING INCREASING TO
HIGH (660) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....41-51.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......NORTHWEST UP TO 6 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (254) IN THE EVENING DECREASING TO
LOW (28) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY. A
CHANCE OF RAIN SHOWERS LATE IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....65-73.
* MIN HUMIDITY........30-40 PERCENT.
* 20-FOOT WINDS.......NORTH UP TO 3 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (344).
FORECAST DAYS 3 THROUGH 7...
FRIDAY
RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS 46 TO
55. HIGHS 57 TO 67. WEST WIND UP TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 37 TO 46. HIGHS 58 TO 67. WEST
WIND UP TO 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 36 TO 46. HIGHS 59 TO 67. SOUTH
WIND UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 36 TO 46. HIGHS 60 TO 68.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 38 TO
47. HIGHS 59 TO 67.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ703-240130-
OKANOGAN VALLEY (ZONE 703)-
INCLUDING THE CITIES OF CONCONULLY AND OMAK
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....67-77.
* 24 HR TREND........10 DEGREES COOLER.
* MIN HUMIDITY........27-35 PERCENT.
* 24 HR TREND........4 PERCENT WETTER.
* 20-FOOT WINDS.......NORTH 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 4 TO 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (212) IN THE MORNING INCREASING TO
HIGH (626) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-51.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 8 MPH IN THE EVENING SHIFTING
TO THE NORTH 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (295) IN THE EVENING DECREASING TO
LOW (27) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....66-75.
* MIN HUMIDITY........28-40 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 4 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......3500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (290).
FORECAST DAYS 3 THROUGH 7...
FRIDAY
RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE
LOWER TO MID 50S. HIGHS 59 TO 69. SOUTHWEST WIND 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE 40S. HIGHS 57 TO 67. WEST
WIND UP TO 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 41 TO 46. HIGHS 58 TO 67. NORTH
WIND UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 40S. HIGHS
58 TO 68.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE 40S. HIGHS 58 TO 68.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ702-240130-
COLVILLE RESERVATION (ZONE 702)-
INCLUDING THE CITIES OF NESPELEM AND KELLER
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....65-75 VALLEYS AND 58-68 MOUNTAINS.
* 24 HR TREND........6 DEGREES COOLER.
* MIN HUMIDITY........28-35 PERCENT.
* 24 HR TREND........7 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH 3 TO 7 MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (266) IN THE MORNING INCREASING TO
HIGH (524) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-51.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........10 PERCENT DRIER VALLEYS, AND 5 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 6 MPH IN THE EVENING SHIFTING TO
THE NORTHEAST 3 TO 5 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH 3 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 (252) IN THE EVENING DECREASING TO
LOW (24) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....69-79 VALLEYS AND 61-71 MOUNTAINS.
* MIN HUMIDITY........27-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 5 MPH IN THE MORNING SHIFTING
TO THE SOUTHEAST 3 TO 4 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST 3 TO 5 MPH.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (150) IN THE MORNING INCREASING TO
MODERATE (410) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.
LOWS 50 TO 56 VALLEYS...45 TO 51 MOUNTAINS. HIGHS 57 TO
67 VALLEYS...49 TO 58 MOUNTAINS. SOUTHWEST WIND 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 39 TO
47. HIGHS 56 TO 66 VALLEYS...49 TO 57 MOUNTAINS. WEST WIND UP TO
5 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 38 TO 45. HIGHS 56 TO 66 VALLEYS
50 TO 58 MOUNTAINS. NORTH WIND UP TO 5 MPH.
MONDAY...PARTLY CLOUDY. LOWS 39 TO 46. HIGHS 57 TO 67 VALLEYS
50 TO 58 MOUNTAINS.
TUESDAY...MOSTLY CLOUDY. LOWS 40 TO 47. HIGHS 58 TO 68 VALLEYS
50 TO 59 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ699-240130-
OKANOGAN HIGHLANDS AND KETTLE MOUNTAINS (ZONE 699)-
INCLUDING THE CITIES OF REPUBLIC AND CURLEW
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....66-76 VALLEYS AND 59-68 MOUNTAINS.
* 24 HR TREND........6 DEGREES COOLER.
* MIN HUMIDITY........29-40 PERCENT.
* 24 HR TREND........5 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 7 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (286) IN THE MORNING INCREASING TO
HIGH (711) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....42-48.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* 24 HR TREND........5 PERCENT WETTER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 6 MPH IN THE EVENING SHIFTING TO
THE EAST UP TO 4 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH 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 (284) IN THE EVENING DECREASING TO
LOW (27) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....68-78 VALLEYS AND 60-69 MOUNTAINS.
* MIN HUMIDITY........28-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST UP TO 4 MPH.
* RIDGES/UPR SLOPES....EAST UP TO 4 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 4 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......3500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (185) IN THE MORNING INCREASING TO
MODERATE (409) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.
LOWS 45 TO 53. HIGHS 56 TO 66 VALLEYS...49 TO 57 MOUNTAINS. SOUTH
WIND UP TO 10 MPH.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 37 TO
45. HIGHS 56 TO 65 VALLEYS...48 TO 56 MOUNTAINS. WEST WIND UP TO
5 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 35 TO 43. HIGHS 57 TO 66 VALLEYS
50 TO 58 MOUNTAINS. NORTH WIND UP TO 5 MPH.
MONDAY...PARTLY CLOUDY. LOWS 36 TO 43. HIGHS 57 TO 67 VALLEYS
50 TO 58 MOUNTAINS.
TUESDAY...MOSTLY CLOUDY. LOWS 37 TO 44. HIGHS 57 TO 67 VALLEYS
50 TO 59 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ700-701-240130-
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
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....67-74 VALLEYS AND 58-66 MOUNTAINS.
* 24 HR TREND........5 DEGREES COOLER.
* MIN HUMIDITY........29-40 PERCENT VALLEYS AND 35-50 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH 3 TO 7 MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (301) IN THE MORNING INCREASING TO
HIGH (600) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....41-49.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........61-80 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 5 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 4 MPH IN THE EVENING SHIFTING TO
THE EAST OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTH 3 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 (191).
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....72-79 VALLEYS AND 62-71 MOUNTAINS.
* MIN HUMIDITY........29-35 PERCENT VALLEYS AND 35-45 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST 3 TO 4 MPH.
* RIDGES/UPR SLOPES....EAST 3 TO 5 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 4 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (133) IN THE MORNING INCREASING TO
MODERATE (398) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.
LOWS 47 TO 54. HIGHS 58 TO 66 VALLEYS...50 TO 58 MOUNTAINS.
SOUTHWEST WIND 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 39 TO
45. HIGHS 56 TO 64 VALLEYS...46 TO 55 MOUNTAINS. SOUTHWEST WIND
UP TO 10 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 35 TO 43. HIGHS 58 TO 65 VALLEYS
48 TO 57 MOUNTAINS. NORTH WIND UP TO 5 MPH.
MONDAY...PARTLY CLOUDY. LOWS 36 TO 43. HIGHS 58 TO 66 VALLEYS
49 TO 57 MOUNTAINS.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 37 TO
44. HIGHS 59 TO 66 VALLEYS...49 TO 58 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
IDZ101-240130-
NORTHERN AND CENTRAL IDAHO PANHANDLE (ZONE 101)-
INCLUDING THE CITIES OF ST. MARIES, RATHDRUM PRAIRIE,
SILVER VALLEY, BONNERS FERRY, AND PRIEST LAKE
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....67-73 VALLEYS AND 59-69 MOUNTAINS.
* 24 HR TREND........1 DEGREE COOLER.
* MIN HUMIDITY........35-50 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 9 MPH WITH GUSTS TO AROUND 20
MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (356) IN THE MORNING INCREASING TO
HIGH (559) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....43-52.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........61-80 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED VALLEYS, AND 15 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH UP TO 4 MPH IN THE EVENING SHIFTING TO
THE EAST 3 TO 4 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE SOUTHEAST OVERNIGHT.
* MIXING HEIGHT.......FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (113).
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....74-83 VALLEYS AND 67-77 MOUNTAINS.
* MIN HUMIDITY........30-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST 3 TO 5 MPH.
* RIDGES/UPR SLOPES....EAST 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (495) IN THE MORNING INCREASING TO
VERY HIGH (1252) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS.
LOWS 48 TO 56. HIGHS 60 TO 68 VALLEYS...54 TO 64 MOUNTAINS.
SOUTHWEST WIND 5 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. A CHANCE OF RAIN AND HIGH MOUNTAIN
SNOW SHOWERS. LOWS 38 TO 47. HIGHS 54 TO 60 VALLEYS...44 TO
54 MOUNTAINS. SOUTHWEST WIND 5 TO 15 MPH.
SUNDAY...MOSTLY CLOUDY. LOWS 35 TO 45. HIGHS 57 TO 62 VALLEYS
48 TO 58 MOUNTAINS. NORTH WIND UP TO 5 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 37 TO 47. HIGHS
57 TO 65 VALLEYS...49 TO 59 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ707-240130-
WESTERN COLUMBIA BASIN (ZONE 707)-
INCLUDING THE CITIES OF MOSES LAKE AND EPHRATA
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....72-76.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........27-40 PERCENT.
* 24 HR TREND........6 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 7 MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (385).
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-53.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........65-80 PERCENT.
* 24 HR TREND........15 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE NORTH 3 TO 7 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (138).
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....73-79.
* MIN HUMIDITY........27-40 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 7 MPH IN THE MORNING SHIFTING TO
THE EAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (264).
FORECAST DAYS 3 THROUGH 7...
FRIDAY
RAIN SHOWERS. LOWS 51 TO 57. HIGHS IN THE MID TO UPPER
60S. SOUTHWEST WIND 10 TO 20 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 42 TO 48. HIGHS IN THE LOWER TO
MID 60S. SOUTHWEST WIND UP TO 10 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 41 TO 47. HIGHS IN THE 60S. NORTH
WIND UP TO 5 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 41 TO 49. HIGHS
64 TO 69.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ708-240130-
EASTERN COLUMBIA BASIN - PALOUSE - SPOKANE AREA (ZONE 708)-
INCLUDING THE CITIES OF SPOKANE, PULLMAN, RITZVILLE, WILBUR,
AND CHENEY
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....71-78.
* 24 HR TREND........5 DEGREES COOLER.
* MIN HUMIDITY........28-35 PERCENT.
* 24 HR TREND........6 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 8 MPH.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (439).
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-51.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........60-70 PERCENT.
* 24 HR TREND........20 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE EAST 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 (162).
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-83.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......NORTHEAST 3 TO 8 MPH IN THE MORNING SHIFTING
TO THE SOUTHEAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (197) IN THE MORNING INCREASING TO
MODERATE (477) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS. LOWS 50 TO 55. HIGHS 64 TO 71.
SOUTHWEST WIND 10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 41 TO 47. HIGHS 60 TO 66.
SOUTHWEST WIND 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 39 TO 45. HIGHS 61 TO 68. NORTH
WIND UP TO 5 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 39 TO 46. HIGHS
62 TO 72.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ709-240130-
LOWER PALOUSE - SNAKE RIVER (ZONE 709)-
INCLUDING THE CITY OF POMEROY
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....70-80.
* 24 HR TREND........1 DEGREE WARMER.
* MIN HUMIDITY........26-35 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 9 MPH WITH GUSTS TO AROUND 20
MPH IN THE MORNING SHIFTING TO THE WEST 3 TO 8 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (358).
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-54.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........UNCHANGED.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE SOUTHEAST OVERNIGHT.
* MIXING HEIGHT.......FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...LOW (77).
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-87.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE NORTHWEST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......3000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (306).
FORECAST DAYS 3 THROUGH 7...
FRIDAY
COOLER. RAIN SHOWERS. LOWS 52 TO 57. HIGHS 63 TO 73.
SOUTHWEST WIND 10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 58 TO 68.
SOUTHWEST WIND 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 41 TO 47. HIGHS 60 TO 70. SOUTHEAST
WIND UP TO 5 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 42 TO 48. HIGHS
62 TO 72.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ705-706-240130-
FOOTHILLS OF CENTRAL WASHINGTON CASCADES (ZONE 705)-
WATERVILLE PLATEAU (ZONE 706)-
INCLUDING THE CITIES OF CHELAN, WENATCHEE, WATERVILLE,
AND GRAND COULEE
311 AM PDT WED SEP 23 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....68-77.
* 24 HR TREND........7 DEGREES COOLER.
* MIN HUMIDITY........28-35 PERCENT.
* 24 HR TREND........10 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 8 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (253) IN THE MORNING INCREASING TO
HIGH (536) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-54.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........15 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......WEST 3 TO 7 MPH IN THE EVENING SHIFTING TO
THE NORTHWEST OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (297) IN THE EVENING DECREASING TO
LOW (33) OVERNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....67-77.
* MIN HUMIDITY........28-40 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 7 MPH IN THE MORNING SHIFTING TO
THE EAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (320).
FORECAST DAYS 3 THROUGH 7...
FRIDAY
RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS 50 TO
58. HIGHS 59 TO 68. WEST WIND 10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 41 TO 49. HIGHS 58 TO 67. WEST
WIND 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 40 TO 49. HIGHS 58 TO 68. NORTHWEST
WIND UP TO 5 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 40 TO 50. HIGHS
59 TO 69.
.8 TO 14 DAY OUTLOOK FOR SEP 30 - OCT 06, 2026
NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
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