Allyn, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allyn, a community in Mason County, Washington.
This Afternoon
55°F
Light Rain Likely
Rain likely after 4pm. Cloudy. High near 55, with temperatures falling to around 53 in the afternoon. South southwest wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Allyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Light Rain Likely | 8 mph SSW | 67% |
| Tonight | 44°F | Light Rain then Mostly Cloudy | 5 to 9 mph SSW | 99% |
| Thursday | 55°F | Partly Sunny | 5 to 9 mph SSW | 4% |
| Thursday Night | 42°F | Mostly Cloudy then Light Rain | 5 mph SSW | 79% |
| Friday | 52°F | Light Rain | 3 to 9 mph SSW | 95% |
| Friday Night | 46°F | Light Rain | 0 to 8 mph SSW | 75% |
| Saturday | 60°F | Chance Light Rain | 0 to 7 mph S | 53% |
| Saturday Night | 48°F | Light Rain | 7 to 20 mph SSW | 94% |
| Sunday | 55°F | Light Rain Likely | 6 to 15 mph SW | 55% |
| Sunday Night | 39°F | Mostly Cloudy | 1 to 6 mph NW | 8% |
| Monday | 54°F | Chance Light Rain | 1 to 6 mph SE | 35% |
| Monday Night | 43°F | Light Rain Likely | 3 to 7 mph SSW | 65% |
| Tuesday | 54°F | Light Rain Likely | 7 to 13 mph SSW | 70% |
| Tuesday Night | 46°F | Light Rain Likely | 3 to 12 mph SSW | 70% |
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.