Roche Harbor, WA Weather & Growing Conditions
Today
62°F
Mostly Sunny
Mostly sunny. High near 62, with temperatures falling to around 60 in the afternoon. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Mostly Sunny | 3 mph S | 0% |
| Tonight | 53°F | Partly Cloudy | 2 mph SSE | 0% |
| Sunday | 62°F | Partly Sunny | 1 to 5 mph WNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 3 mph SSW | 0% |
| Monday | 63°F | Mostly Sunny | 1 to 5 mph S | 0% |
| Monday Night | 54°F | Partly Cloudy | 3 mph SW | 0% |
| Tuesday | 64°F | Mostly Sunny | 1 to 5 mph SSW | 0% |
| Tuesday Night | 53°F | Mostly Cloudy | 3 mph S | 7% |
| Wednesday | 65°F | Partly Sunny | 5 mph S | 11% |
| Wednesday Night | 53°F | Mostly Cloudy | 3 mph WSW | 11% |
| Thursday | 64°F | Partly Sunny | 2 to 7 mph NW | 13% |
| Thursday Night | 52°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph WNW | 16% |
| Friday | 64°F | Slight Chance Light Rain then Mostly Sunny | 5 to 8 mph NW | 16% |
| Friday Night | 52°F | Partly Cloudy | 6 mph NW | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Roche Harbor, WA
Last spring frost
Feb 26
First fall frost
Nov 29
Growing season
276 days
Hardiness zone
9a
Explore more for Roche Harbor, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Olga 2 Se, Wa (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.