Blyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blyn, a community in Jefferson County, Washington.
Tonight
39°F
Partly Cloudy
Partly cloudy, with a low around 39. Northeast wind around 3 mph.
7-day forecast for Blyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Partly Cloudy | 3 mph NE | 3% |
| Wednesday | 52°F | Partly Sunny then Chance Light Rain | 3 mph ESE | 49% |
| Wednesday Night | 41°F | Light Rain Likely | 3 mph S | 74% |
| Thursday | 50°F | Mostly Sunny | 0 to 3 mph S | 10% |
| Thursday Night | 42°F | Light Rain Likely | 1 to 12 mph SSE | 71% |
| Friday | 51°F | Light Rain Likely | 1 to 12 mph SSE | 71% |
| Friday Night | 44°F | Chance Light Rain | 2 mph SE | 34% |
| Saturday | 58°F | Chance Light Rain | 2 to 9 mph SSE | 49% |
| Saturday Night | 46°F | Light Rain | 5 to 13 mph SSE | 78% |
| Sunday | 54°F | Light Rain Likely | 1 to 5 mph S | 72% |
| Sunday Night | 41°F | Slight Chance Light Rain | 2 mph SW | 24% |
| Monday | 53°F | Light Rain Likely | 5 mph SSE | 55% |
| Monday Night | 44°F | Light Rain Likely | 5 to 9 mph SSE | 73% |
| Tuesday | 55°F | Light Rain Likely | 7 to 12 mph SSE | 73% |
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 Nov 4, 2026.