Belfair, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belfair, a community in Mason County, Washington.
Today
87°F
Sunny then Areas Of Smoke
Areas of smoke after 1pm. Sunny, with a high near 87. North northeast wind 3 to 9 mph.
7-day forecast for Belfair
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny then Areas Of Smoke | 3 to 9 mph NNE | 0% |
| Tonight | 57°F | Areas Of Smoke | 2 to 8 mph NNE | 0% |
| Wednesday | 93°F | Areas Of Smoke | 2 to 7 mph NNE | 0% |
| Wednesday Night | 59°F | Clear | 0 to 7 mph N | 0% |
| Thursday | 92°F | Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 to 6 mph SW | 0% |
| Friday | 87°F | Sunny | 2 to 6 mph SSW | 0% |
| Friday Night | 57°F | Mostly Clear | 0 to 6 mph W | 0% |
| Saturday | 83°F | Sunny | 0 to 6 mph SSW | 1% |
| Saturday Night | 54°F | Mostly Clear | 0 to 6 mph SSW | 1% |
| Sunday | 78°F | Mostly Sunny | 0 to 6 mph S | 1% |
| Sunday Night | 53°F | Mostly Clear | 0 to 6 mph SW | 1% |
| Monday | 77°F | Mostly Sunny | 0 to 6 mph SSE | 1% |
| Monday Night | 53°F | Partly Cloudy | 0 to 6 mph N | 1% |
Forecast source: National Weather Service (api.weather.gov) for Belfair (47.447, -122.853). Updated through the day.
Growing snapshot for Belfair
Last spring frost
Mar 29
First fall frost
Nov 14
Growing season
227 days
Hardiness zone
8b
More local growing data for Belfair: nearby ZIP 98528 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bremerton, Wa (13 mi from Belfair). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.