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
38°F
Mostly Clear
Mostly clear, with a low around 38. South southeast wind around 2 mph.
7-day forecast for La Grande
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 38°F | Mostly Clear | 2 mph SSE | 2% |
| Wednesday | 58°F | Partly Sunny then Chance Light Rain | 1 to 6 mph S | 54% |
| Wednesday Night | 42°F | Light Rain | 6 to 12 mph S | 89% |
| Thursday | 54°F | Slight Chance Light Rain then Mostly Sunny | 6 mph SSW | 24% |
| Thursday Night | 41°F | Mostly Cloudy then Light Rain Likely | 3 to 9 mph S | 57% |
| Friday | 54°F | Light Rain Likely | 3 to 16 mph SSE | 74% |
| Friday Night | 44°F | Light Rain Likely | 6 mph SSE | 69% |
| Saturday | 63°F | Partly Sunny then Slight Chance Light Rain | 1 to 6 mph SSE | 22% |
| Saturday Night | 44°F | Light Rain | 1 to 14 mph S | 79% |
| Sunday | 52°F | Light Rain Likely | 0 to 10 mph SSW | 66% |
| Sunday Night | 40°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 3 mph SE | 16% |
| Monday | 55°F | Chance Light Rain | 1 to 5 mph SSE | 34% |
| Monday Night | 43°F | Chance Light Rain | 1 to 12 mph SSE | 51% |
| Tuesday | 56°F | Chance Light Rain | 5 to 14 mph SSE | 52% |
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 Nov 4, 2026.