Brinnon, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brinnon, a community in Kitsap County, Washington.
Today
56°F
Mostly Cloudy then Light Rain
Rain after 4pm. Mostly cloudy. High near 56, with temperatures falling to around 53 in the afternoon. South southwest wind 3 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Brinnon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Mostly Cloudy then Light Rain | 3 to 17 mph SSW | 83% |
| Tonight | 45°F | Light Rain then Mostly Cloudy | 7 to 17 mph SW | 94% |
| Thursday | 55°F | Mostly Sunny | 7 to 14 mph SW | 5% |
| Thursday Night | 46°F | Light Rain | 14 to 18 mph SSW | 90% |
| Friday | 54°F | Light Rain | 13 to 18 mph S | 90% |
| Friday Night | 48°F | Light Rain Likely | 3 to 13 mph S | 73% |
| Saturday | 59°F | Light Rain Likely | 3 to 16 mph SSW | 62% |
| Saturday Night | 49°F | Light Rain | 16 to 23 mph SSW | 87% |
| Sunday | 53°F | Light Rain Likely | 3 to 17 mph SSW | 60% |
| Sunday Night | 44°F | Slight Chance Light Rain | 3 mph WSW | 15% |
| Monday | 52°F | Chance Light Rain | 3 to 9 mph SW | 48% |
| Monday Night | 47°F | Light Rain Likely | 9 to 18 mph SSW | 65% |
| Tuesday | 54°F | Light Rain Likely | 18 mph SSW | 65% |
| Tuesday Night | 48°F | Light Rain Likely | 13 to 20 mph SSW | 57% |
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
Nearby towns & communities
Bainbridge Island
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Kingston
Kitsap Lake
Lofall
Manchester
Navy Yard City
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Port Gamble Tribal Community
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Seabeck
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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 Nov 4, 2026.