Allyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allyn, a community in Mason County, Washington.
Tonight
51°F
Mostly Clear
Mostly clear, with a low around 51. Northeast wind around 2 mph.
7-day forecast for Allyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Clear | 2 mph NE | 0% |
| Sunday | 74°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Monday | 72°F | Partly Sunny | 0 to 3 mph SE | 0% |
| Monday Night | 51°F | Partly Cloudy | 0 to 3 mph NE | 2% |
| Tuesday | 69°F | Mostly Cloudy | 0 to 5 mph S | 2% |
| Tuesday Night | 48°F | Mostly Cloudy | 1 to 5 mph SW | 5% |
| Wednesday | 67°F | Partly Sunny | 1 to 7 mph SW | 7% |
| Wednesday Night | 48°F | Mostly Cloudy | 1 to 7 mph NW | 11% |
| Thursday | 64°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 7 mph NNE | 16% |
| Thursday Night | 47°F | Slight Chance Light Rain | 1 to 7 mph NNW | 18% |
| Friday | 63°F | Slight Chance Light Rain | 1 to 7 mph NNW | 19% |
| Friday Night | 46°F | Mostly Cloudy | 2 to 7 mph N | 10% |
| Saturday | 66°F | Partly Sunny | 2 to 7 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Allyn (47.387, -122.839). Updated through the day.
Growing snapshot for Allyn
Last spring frost
Mar 11
First fall frost
Nov 21
Growing season
254 days
Hardiness zone
8b
More local growing data for Allyn: nearby ZIP 98524 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tacoma Narrows Ap, Wa (14 mi from Allyn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.