Lamont, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a town in Whitman County, Washington.
Overnight
50°F
Mostly Clear
Mostly clear, with a low around 50. Wind around 0 mph.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Clear | 0 mph | 0% |
| Saturday | 81°F | Sunny | 3 mph S | 0% |
| Saturday Night | 51°F | Mostly Clear | 3 mph SE | 0% |
| Sunday | 84°F | Sunny | 3 mph SE | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Monday | 85°F | Sunny | 6 mph SE | 0% |
| Monday Night | 54°F | Partly Cloudy | 2 to 6 mph S | 0% |
| Tuesday | 81°F | Mostly Sunny | 3 to 7 mph S | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 2 to 6 mph SW | 1% |
| Wednesday | 76°F | Mostly Sunny | 3 to 8 mph SW | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 2 to 7 mph S | 1% |
| Thursday | 76°F | Mostly Sunny | 5 mph S | 3% |
| Thursday Night | 50°F | Mostly Cloudy | 5 mph NE | 7% |
| Friday | 72°F | Partly Sunny | 6 mph S | 13% |
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 19, 2026.