La Grande, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Grande, a community in Pierce County, Washington.
Overnight
48°F
Mostly Cloudy
Mostly cloudy, with a low around 48. Wind around 0 mph.
7-day forecast for La Grande
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 70°F | Mostly Sunny | 2 mph NNW | 0% |
| Saturday Night | 49°F | Mostly Clear | 1 mph N | 0% |
| Sunday | 71°F | Sunny | 2 mph NNW | 0% |
| Sunday Night | 49°F | Mostly Clear | 2 mph N | 0% |
| Monday | 68°F | Mostly Sunny | 0 to 3 mph NNW | 0% |
| Monday Night | 48°F | Partly Cloudy | 2 mph NNW | 0% |
| Tuesday | 64°F | Partly Sunny | 0 to 3 mph NNW | 0% |
| Tuesday Night | 46°F | Partly Cloudy | 2 mph NW | 1% |
| Wednesday | 64°F | Partly Sunny | 2 mph WSW | 5% |
| Wednesday Night | 47°F | Mostly Cloudy | 2 mph NNW | 5% |
| Thursday | 61°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 3 mph N | 17% |
| Thursday Night | 45°F | Slight Chance Light Rain | 0 to 3 mph N | 17% |
| Friday | 59°F | Partly Sunny | 0 to 3 mph NNW | 14% |
Forecast source: National Weather Service (api.weather.gov) for La Grande (46.811, -122.283). Updated through the day.
Growing snapshot for La Grande
Last spring frost
May 22
First fall frost
Oct 3
Growing season
134 days
Hardiness zone
8b
More local growing data for La Grande: nearby ZIP 98328 weather · frost dates · planting calendar · Washington frost dates
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Home
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Climate data from the nearest NOAA station, Longmire Rainier Nps, Wa (18.3 mi from La Grande). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.