Blyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blyn, a community in Jefferson County, Washington.
Overnight
52°F
Clear
Clear. Low around 52, with temperatures rising to around 54 overnight. West wind around 6 mph.
7-day forecast for Blyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Clear | 6 mph W | 0% |
| Tuesday | 73°F | Sunny then Patchy Smoke | 7 mph NW | 0% |
| Tuesday Night | 57°F | Areas Of Smoke | 5 mph WNW | 0% |
| Wednesday | 76°F | Patchy Smoke | 5 mph NW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 3 mph WNW | 0% |
| Thursday | 76°F | Sunny | 2 mph NW | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 mph W | 0% |
| Friday | 76°F | Sunny | 3 mph NW | 0% |
| Friday Night | 56°F | Mostly Clear | 2 mph WNW | 0% |
| Saturday | 73°F | Sunny | 0 to 3 mph NW | 2% |
| Saturday Night | 54°F | Mostly Clear | 3 mph WNW | 2% |
| Sunday | 70°F | Mostly Sunny | 3 mph NNW | 3% |
| Sunday Night | 53°F | Mostly Clear | 0 to 3 mph NW | 2% |
| Monday | 70°F | Mostly Sunny | 0 to 3 mph NNW | 6% |
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 Aug 4, 2026.