Brinnon, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brinnon, a community in Kitsap County, Washington.
Tonight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. Wind around 0 mph.
7-day forecast for Brinnon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 73°F | Partly Sunny | 2 mph SE | 1% |
| Saturday Night | 55°F | Mostly Clear | 2 mph NNE | 0% |
| Sunday | 74°F | Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 55°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 5 mph ESE | 5% |
| Monday Night | 54°F | Partly Cloudy | 0 to 5 mph N | 5% |
| Tuesday | 65°F | Partly Sunny | 0 to 3 mph ESE | 4% |
| Tuesday Night | 52°F | Mostly Cloudy | 0 to 3 mph N | 7% |
| Wednesday | 64°F | Partly Sunny | 0 to 5 mph NE | 11% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 mph NNW | 11% |
| Thursday | 66°F | Partly Sunny then Slight Chance Light Rain | 2 to 6 mph SSW | 20% |
| Thursday Night | 53°F | Chance Light Rain | 6 mph SW | 35% |
| Friday | 63°F | Chance Light Rain | 3 to 7 mph S | 37% |
Forecast source: National Weather Service (api.weather.gov) for Brinnon (47.669, -122.917). Updated through the day.
Growing snapshot for Brinnon
Last spring frost
Mar 29
First fall frost
Nov 14
Growing season
227 days
Hardiness zone
8b
More local growing data for Brinnon: nearby ZIP 98380 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Bremerton, Wa (9.4 mi from Brinnon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.