Blyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blyn, a community in Jefferson County, Washington.
Tonight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. East wind around 1 mph.
7-day forecast for Blyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 1 mph E | 0% |
| Saturday | 62°F | Partly Sunny | 1 mph N | 1% |
| Saturday Night | 49°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 63°F | Sunny | 3 mph NW | 0% |
| Sunday Night | 49°F | Mostly Clear | 2 mph WNW | 0% |
| Monday | 64°F | Mostly Sunny | 2 mph WNW | 6% |
| Monday Night | 51°F | Partly Cloudy | 2 mph WNW | 6% |
| Tuesday | 64°F | Mostly Sunny | 2 mph NW | 6% |
| Tuesday Night | 49°F | Mostly Cloudy | 1 mph NW | 8% |
| Wednesday | 62°F | Partly Sunny | 2 mph NNE | 13% |
| Wednesday Night | 49°F | Slight Chance Light Rain | 1 mph NNW | 15% |
| Thursday | 64°F | Partly Sunny then Chance Light Rain | 2 mph NW | 25% |
| Thursday Night | 50°F | Chance Light Rain | 1 mph WNW | 35% |
| Friday | 62°F | Chance Light Rain | 2 mph NW | 38% |
Forecast source: National Weather Service (api.weather.gov) for Blyn (48.009, -122.980). Updated through the day.
Growing snapshot for Blyn
Last spring frost
Mar 1
First fall frost
Nov 28
Growing season
274 days
Hardiness zone
8b
More local growing data for Blyn: nearby ZIP 98368 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Townsend, Wa (6.1 mi from Blyn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.