Clarkston, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarkston, a city in Whitman County, Washington.
Overnight
56°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 56. East wind around 1 mph.
7-day forecast for Clarkston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Areas Of Smoke | 1 mph E | 0% |
| Tuesday | 93°F | Haze | 1 to 5 mph SE | 0% |
| Tuesday Night | 59°F | Patchy Smoke | 1 to 5 mph NE | 0% |
| Wednesday | 99°F | Patchy Smoke | 5 mph NE | 0% |
| Wednesday Night | 62°F | Patchy Smoke then Clear | 3 mph E | 0% |
| Thursday | 105°F | Sunny | 1 to 5 mph NE | 0% |
| Thursday Night | 67°F | Clear | 3 mph SW | 0% |
| Friday | 104°F | Sunny | 1 to 16 mph SW | 0% |
| Friday Night | 66°F | Clear | 1 to 16 mph SW | 0% |
| Saturday | 100°F | Sunny | 1 to 14 mph NW | 0% |
| Saturday Night | 65°F | Mostly Clear | 2 to 14 mph W | 0% |
| Sunday | 95°F | Sunny | 2 to 12 mph NW | 0% |
| Sunday Night | 62°F | Mostly Clear | 0 to 12 mph W | 0% |
| Monday | 94°F | Sunny | 0 to 10 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Clarkston (46.415, -117.050). Updated through the day.
Growing snapshot for Clarkston
Last spring frost
Apr 6
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
More local growing data for Clarkston: nearby ZIP 99179 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Albion
Clarkston Heights-Vineland
Colfax
Colton
Endicott
Farmington
Garfield
LaCrosse
Lamont
Malden
Oakesdale
Palouse
Pullman
Rosalia
St. John
Steptoe
Tekoa
Uniontown
West Clarkston-Highland
Climate data from the nearest NOAA station, Lewiston Nez Perce Co Ap, Id (9.8 mi from Clarkston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.