Lamont, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a town in Whitman County, Washington.
Tonight
52°F
Mostly Clear
Mostly clear, with a low around 52. East wind around 3 mph.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear | 3 mph E | 0% |
| Sunday | 86°F | Sunny | 1 to 6 mph SE | 0% |
| Sunday Night | 54°F | Mostly Clear | 1 to 5 mph SE | 0% |
| Monday | 86°F | Sunny | 6 mph SE | 0% |
| Monday Night | 55°F | Partly Cloudy | 1 to 5 mph SE | 0% |
| Tuesday | 82°F | Mostly Sunny | 3 to 8 mph S | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 3 to 8 mph SW | 0% |
| Wednesday | 75°F | Mostly Sunny | 6 to 9 mph SW | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 2 to 8 mph S | 1% |
| Thursday | 74°F | Mostly Sunny | 5 mph SE | 4% |
| Thursday Night | 50°F | Mostly Cloudy | 3 mph NE | 7% |
| Friday | 71°F | Partly Sunny | 3 to 7 mph S | 10% |
| Friday Night | 47°F | Mostly Cloudy | 7 mph SW | 13% |
| Saturday | 69°F | Mostly Sunny | 7 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov) for Lamont (47.201, -117.905). Updated through the day.
Growing snapshot for Lamont
Last spring frost
Apr 29
First fall frost
Oct 4
Growing season
161 days
Hardiness zone
6b
More local growing data for Lamont: nearby ZIP 99017 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Albion
Clarkston
Clarkston Heights-Vineland
Colfax
Colton
Endicott
Farmington
Garfield
LaCrosse
Malden
Oakesdale
Palouse
Pullman
Rosalia
St. John
Steptoe
Tekoa
Uniontown
West Clarkston-Highland
Climate data from the nearest NOAA station, St John, Wa (15.4 mi from Lamont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.