Roche Harbor, WA Weather & Growing Conditions
Today
54°F
Mostly Cloudy then Light Rain Likely
Rain likely after 4pm. Mostly cloudy. High near 54, with temperatures falling to around 52 in the afternoon. Southeast wind 2 to 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Mostly Cloudy then Light Rain Likely | 2 to 6 mph SE | 55% |
| Tonight | 48°F | Light Rain then Mostly Cloudy | 3 to 15 mph SSE | 93% |
| Thursday | 53°F | Mostly Sunny | 12 mph SSE | 6% |
| Thursday Night | 48°F | Mostly Cloudy then Light Rain | 9 to 20 mph SE | 91% |
| Friday | 54°F | Light Rain | 20 to 28 mph SE | 96% |
| Friday Night | 49°F | Light Rain Likely | 7 to 21 mph ESE | 55% |
| Saturday | 58°F | Chance Light Rain | 7 to 20 mph ESE | 52% |
| Saturday Night | 49°F | Light Rain | 15 to 25 mph S | 91% |
| Sunday | 53°F | Chance Light Rain | 6 to 15 mph SSW | 52% |
| Sunday Night | 43°F | Mostly Cloudy | 6 mph SE | 11% |
| Monday | 52°F | Mostly Cloudy then Chance Light Rain | 3 to 8 mph ESE | 28% |
| Monday Night | 47°F | Light Rain Likely | 8 to 23 mph SE | 71% |
| Tuesday | 54°F | Light Rain Likely | 18 to 23 mph SE | 73% |
| Tuesday Night | 48°F | Light Rain Likely | 13 to 20 mph SE | 67% |
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 Nov 4, 2026.