Clarkston, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarkston, a city in Whitman County, Washington.
Overnight
40°F
Mostly Clear
Mostly clear, with a low around 40. Wind around 0 mph.
7-day forecast for Clarkston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Mostly Clear | 0 mph | 1% |
| Wednesday | 58°F | Sunny | 2 mph N | 1% |
| Wednesday Night | 42°F | Mostly Cloudy then Rain Showers Likely | 2 mph E | 72% |
| Thursday | 58°F | Rain Showers Likely | 3 mph W | 72% |
| Thursday Night | 40°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Friday | 58°F | Partly Sunny | 2 to 7 mph E | 3% |
| Friday Night | 43°F | Mostly Cloudy | 2 to 6 mph E | 3% |
| Saturday | 66°F | Mostly Sunny | 5 to 8 mph E | 1% |
| Saturday Night | 45°F | Mostly Cloudy | 5 to 10 mph SE | 4% |
| Sunday | 63°F | Mostly Cloudy | 2 to 6 mph S | 7% |
| Sunday Night | 43°F | Mostly Cloudy | 3 mph SE | 5% |
| Monday | 60°F | Partly Sunny then Slight Chance Rain Showers | 1 to 5 mph NE | 15% |
| Monday Night | 43°F | Slight Chance Rain Showers | 2 mph SE | 15% |
| Tuesday | 61°F | Slight Chance Rain Showers | 5 mph SE | 17% |
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 Nov 4, 2026.