Roche Harbor, WA Weather & Growing Conditions
Overnight
60°F
Mostly Clear
Mostly clear. Low around 60, with temperatures rising to around 62 overnight. North wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Mostly Clear | 9 mph N | 0% |
| Tuesday | 77°F | Sunny | 6 to 9 mph NNW | 0% |
| Tuesday Night | 61°F | Patchy Smoke | 1 to 8 mph WNW | 0% |
| Wednesday | 80°F | Sunny | 3 to 8 mph NNW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 3 mph WNW | 0% |
| Thursday | 80°F | Sunny | 3 mph NW | 0% |
| Thursday Night | 61°F | Mostly Clear | 0 to 3 mph SSW | 0% |
| Friday | 80°F | Sunny | 3 mph S | 0% |
| Friday Night | 61°F | Mostly Clear | 2 mph SSW | 0% |
| Saturday | 74°F | Sunny | 0 to 3 mph SSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 73°F | Sunny | 3 mph SW | 0% |
| Sunday Night | 59°F | Mostly Clear | 3 mph WSW | 1% |
| Monday | 73°F | Mostly Sunny | 6 mph W | 1% |
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 (11.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.