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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

WhenTempForecastWindPrecip
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

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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.