Copalis Beach, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Copalis Beach, a community in Grays Harbor County, Washington.
Tonight
52°F
Mostly Cloudy
Mostly cloudy, with a low around 52. Southwest wind around 1 mph.
7-day forecast for Copalis Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy | 1 mph SW | 0% |
| Saturday | 64°F | Mostly Cloudy | 1 to 7 mph NNW | 1% |
| Saturday Night | 51°F | Mostly Cloudy | 7 mph NNW | 0% |
| Sunday | 65°F | Mostly Sunny | 5 to 10 mph NNW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 6 to 10 mph NW | 0% |
| Monday | 66°F | Partly Sunny | 5 to 12 mph NW | 1% |
| Monday Night | 52°F | Partly Cloudy | 6 to 12 mph NNW | 0% |
| Tuesday | 64°F | Partly Sunny | 6 to 9 mph NW | 1% |
| Tuesday Night | 51°F | Mostly Cloudy | 2 to 9 mph NNW | 7% |
| Wednesday | 64°F | Partly Sunny | 2 to 7 mph N | 7% |
| Wednesday Night | 52°F | Mostly Cloudy then Slight Chance Light Rain | 3 to 7 mph N | 17% |
| Thursday | 65°F | Chance Light Rain | 3 to 8 mph NNE | 27% |
| Thursday Night | 53°F | Chance Light Rain | 8 mph WNW | 30% |
| Friday | 63°F | Chance Light Rain | 5 to 8 mph W | 30% |
Forecast source: National Weather Service (api.weather.gov) for Copalis Beach (47.125, -124.166). Updated through the day.
Growing snapshot for Copalis Beach
Last spring frost
Apr 26
First fall frost
Oct 22
Growing season
180 days
Hardiness zone
9a
More local growing data for Copalis Beach: nearby ZIP 98535 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Humptulips Salmon Hatchery, Wa (10.8 mi from Copalis Beach). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.