Climate & Weather in Corvallis
Corvallis shares the Willamette Valley's genuine warm-summer, Mediterranean-influenced climate documented for Eugene: mild, wet winters and warm, dry summers, with July as the driest month.
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Learn moreMild winters, warm dry summers
Corvallis's average January high runs 48°F (low 36°F); July runs as the driest month, with approximately 0.4 inches of rain on average -- a genuine, distinct wet-winter/dry-summer seasonal pattern rather than year-round rain.
A close climate match to Eugene, roughly 40 miles south
Corvallis's climate runs closely consistent with Eugene's own NOAA-documented Willamette Valley pattern (81°F average July high) -- this record uses an approximate 82°F July-high estimate for Corvallis, disclosed as a close estimate rather than an independently isolated Corvallis-specific NOAA figure.
Distinct from Central and Eastern Oregon
Corvallis's wetter, milder Willamette Valley climate runs genuinely distinct from Bend's high-desert climate or Eastern Oregon's more extreme seasonal swings, built elsewhere in this project's Oregon manifest.
Key takeaways
- Corvallis shares the Willamette Valley's genuine mild-winter, warm-dry-summer Mediterranean-influenced climate.
- Average January high runs 48°F; July is the driest month at approximately 0.4 inches of rain.
- Corvallis's climate closely matches Eugene's, distinct from Bend's high-desert or Eastern Oregon's climates.
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