LaCrosse, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for LaCrosse, a town in Whitman County, Washington.
Overnight
51°F
Mostly Clear
Mostly clear, with a low around 51. South wind around 1 mph.
7-day forecast for LaCrosse
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Clear | 1 mph S | 0% |
| Saturday | 81°F | Sunny | 3 mph SW | 0% |
| Saturday Night | 52°F | Mostly Clear | 0 to 3 mph SE | 0% |
| Sunday | 85°F | Sunny | 3 mph SE | 0% |
| Sunday Night | 52°F | Clear | 2 mph E | 0% |
| Monday | 86°F | Sunny | 3 mph S | 0% |
| Monday Night | 54°F | Partly Cloudy | 3 mph S | 0% |
| Tuesday | 82°F | Sunny | 5 mph S | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 3 mph SW | 0% |
| Wednesday | 77°F | Mostly Sunny | 2 to 6 mph SW | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph SW | 1% |
| Thursday | 77°F | Mostly Sunny | 3 mph SW | 3% |
| Thursday Night | 50°F | Partly Cloudy | 2 mph NE | 5% |
| Friday | 73°F | Partly Sunny | 5 mph SW | 12% |
Forecast source: National Weather Service (api.weather.gov) for LaCrosse (46.796, -117.918). Updated through the day.
Growing snapshot for LaCrosse
Last spring frost
May 13
First fall frost
Sep 26
Growing season
133 days
Hardiness zone
7a
More local growing data for LaCrosse: nearby ZIP 99143 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Albion
Clarkston
Clarkston Heights-Vineland
Colfax
Colton
Endicott
Farmington
Garfield
Lamont
Malden
Oakesdale
Palouse
Pullman
Rosalia
St. John
Steptoe
Tekoa
Uniontown
West Clarkston-Highland
Climate data from the nearest NOAA station, Lacrosse, Wa (3.9 mi from LaCrosse). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.