Lamont, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a town in Whitman County, Washington.
Overnight
34°F
Partly Cloudy
Partly cloudy, with a low around 34. East wind around 2 mph.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Partly Cloudy | 2 mph E | 1% |
| Wednesday | 52°F | Sunny | 3 mph S | 1% |
| Wednesday Night | 37°F | Chance Rain Showers | 1 to 5 mph S | 54% |
| Thursday | 53°F | Chance Rain Showers then Partly Sunny | 5 to 8 mph SW | 54% |
| Thursday Night | 38°F | Partly Cloudy | 6 mph S | 1% |
| Friday | 55°F | Mostly Cloudy | 8 mph SE | 2% |
| Friday Night | 41°F | Mostly Cloudy | 6 mph SE | 7% |
| Saturday | 64°F | Partly Sunny | 3 to 7 mph SE | 3% |
| Saturday Night | 43°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 8 mph SE | 15% |
| Sunday | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph SW | 15% |
| Sunday Night | 40°F | Mostly Cloudy | 3 to 7 mph S | 4% |
| Monday | 57°F | Partly Sunny | 6 mph E | 8% |
| Monday Night | 40°F | Chance Rain Showers | 3 mph E | 27% |
| Tuesday | 58°F | Chance Rain Showers | 3 to 7 mph S | 27% |
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 Nov 4, 2026.