Allyn Weather Today

Allyn is a small unincorporated community in Mason County, Washington, US. It is situated on the western side of the state, near the Puget Sound. The climate in Allyn is a maritime climate, which means it has milder temperatures than the inland areas of Washington. During the summer months, temperatures average in the mid-70s Fahrenheit (mid-20s Celsius) and in the winter months temperatures typically hover in the upper-40s Fahrenheit (8-10 Celsius). Rainfall is abundant throughout the year, with an average of about 41 inches (104 cm) annually.