Allyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allyn, a community in Mason County, Washington.
Today
55°F
Patchy Fog then Light Rain
Patchy fog before 10am, then rain. Mostly cloudy. High near 55, with temperatures falling to around 53 in the afternoon. South southwest wind 1 to 9 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Allyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Patchy Fog then Light Rain | 1 to 9 mph SSW | 86% |
| Tonight | 43°F | Light Rain then Mostly Cloudy | 9 to 15 mph SSW | 97% |
| Thursday | 55°F | Mostly Sunny | 10 mph SSW | 5% |
| Thursday Night | 42°F | Light Rain | 9 mph SSW | 89% |
| Friday | 53°F | Light Rain | 7 to 15 mph SSW | 89% |
| Friday Night | 45°F | Light Rain Likely | 1 to 7 mph SSW | 74% |
| Saturday | 59°F | Chance Light Rain | 1 to 6 mph SSW | 53% |
| Saturday Night | 47°F | Light Rain | 6 to 20 mph SSW | 85% |
| Sunday | 54°F | Light Rain Likely | 7 to 15 mph SSW | 62% |
| Sunday Night | 39°F | Slight Chance Light Rain | 1 to 7 mph WNW | 15% |
| Monday | 54°F | Chance Light Rain | 1 to 5 mph ESE | 46% |
| Monday Night | 43°F | Light Rain Likely | 7 mph S | 64% |
| Tuesday | 56°F | Light Rain Likely | 7 to 10 mph SSW | 64% |
| Tuesday Night | 45°F | Light Rain Likely | 3 to 9 mph S | 56% |
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 Nov 4, 2026.