Moderate Climate
Source: The Weather Channel
As part of the Willamette Valley, Wilsonville is within the marine west coast climate zone. Summers are generally warm, but temperatures year-round are moderated by a marine influence from the Pacific Ocean. Wilsonville receives most of its precipitation during the mild to cool winter months, with the wettest period from November through March.July and August are the warmest months with an average high temperature of 81°F, while December is the coolest month with an average low of 34 F. On average, December is also the wettest month with 6.62 inches of precipitation.
Wilsonville by the Season
Flowering trees dominate our spring-time landscape, followed by summer sunshine and Mt. Hood views.
In the autumn the City is vivid with the crimson, orange and gold of fall.
Winters are generally rainy with moderate temperatures, and occasional snow.
Cherry blossoms typically bloom in March and April.
