Corvallis, OR Weather & Climate Normals
Corvallis's real weather, in one number
Corvallis, OR scores 56/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Corvallis's hottest and coldest months
Corvallis's hottest month is Aug, averaging 68°F; its coldest is Dec, averaging 40°F, a 27.3°F swing across the year, a middling gap by national standards.
Corvallis's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 47°F | 34°F | 6.46in | 0.5in |
| Feb | 51°F | 35°F | 4.8in | 1.6in |
| Mar | 56°F | 37°F | 4.95in | 0.1in |
| Apr | 61°F | 40°F | 3.29in | 0in |
| May | 68°F | 45°F | 2.31in | 0in |
| Jun | 74°F | 49°F | 1.34in | 0in |
| Jul | 83°F | 52°F | 0.34in | 0in |
| Aug | 84°F | 51°F | 0.39in | 0in |
| Sep | 78°F | 48°F | 1.49in | 0in |
| Oct | 65°F | 42°F | 3.5in | 0in |
| Nov | 53°F | 38°F | 6.46in | 0in |
| Dec | 47°F | 34°F | 7.71in | 0.7in |
May, Jun, Jul, Aug, and Sep are the best time to see Corvallis at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in Corvallis
Corvallis averages 43.04in of precipitation a year across roughly 168 days with measurable rain or snow, and 2.9in of snow a year.
Where Corvallis ranks
Corvallis ranks 736 of 4876 US cities in this dataset for comfort score, and 19 of 80 within OR. About 61,993 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Corvallis State Univ, OR US, 6.2 miles from Corvallis, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station