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Seasonal Weather Guidelines

What's the best time of year to visit Oregon's Willamette Valley? The great news is, there really isn't a bad one. Here's our weather breakdown by season. Learn more about seasonal festivities and events.

Cellar Season (January through March)

Winter in the Willamette Valley means mist, fog, and gentle rain, with daytime temperatures averaging in the 40s and 50s (F). We get the occasionally sunny day, especially in March, but we also love the haunting backdrop of a cloud-filled sky. Pack rain gear.

Willamette in Bloom (April and May)

All that winter rain means the Willamette Valley explodes with the color and fragrance of flowers come spring. Layer up and expect daytime temperatures to average in the 50s and 60s, with sunshine and showers tangoing throughout the day. 

Summer (June through August)

This is the Oregon you might not know about: long sunny days, miles and miles of clear views and heat that draws visitors and locals alike to our mountains, rivers and coastal beaches. Pack an extra layer for cool mornings but expect to ditch it by lunch––temperatures average in the 70s and 80s all summer and can climb as high as the triple digits in unusual cases. Rain is rare. 

Harvest (September and October)

Pinot noir grapes thrive in our long, glorious fall weather, and so do humans. Bring layers (sensing a theme here?) and expect afternoons to reach the 70s in September, falling into the 60s by the end of October. The rains don't usually start until later in the season, but pack your rain jacket just in case.

The Giving Season (November and December)

Late fall and the beginning of winter mean a return to gentle rain and mist, cooler temperatures and snowy mountaintops. Average daytime temperatures hover around the 40s and 50s.