Corvallis Climate by Month
Corvallis, Oregon, United States
Warm summers and cool winters, with most rain from November to March.
Warm summers and cool winters, with most rain from November to March: that's Corvallis's climate in short. August is the warmest month, with highs around 85°F (29°C); December is the coolest at 47°F (8°C), and nights dip to 35°F (2°C). It gets 46 in (1161 mm) of rain a year, 72% of it from November to March.
- Warmest month
- 85°F(29°C)
- Average high, August
- Coldest nights
- 35°F(2°C)
- Average low, December
- Rain per year
- 46 in(1161 mm)
- Wettest: December
- Humidity
- 74%
- Sunniest: July
Best and worst months in Corvallis
Best for weatherThe most comfortable weather comes in June and September, with highs around 76°F (25°C) and about 1.4 in (36 mm) of rain a month.
Least pleasantDecember is the least pleasant month: it's the coldest, with highs of only 47°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Corvallis weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 36°F(2°C) | 6.8 in(172 mm) | 89% | 1.2 |
| FebFebruary | 52°F(11°C) | 36°F(2°C) | 5.3 in(135 mm) | 82% | 2.1 |
| MarMarch | 56°F(13°C) | 38°F(4°C) | 5.0 in(128 mm) | 81% | 3.0 |
| AprApril | 61°F(16°C) | 41°F(5°C) | 3.5 in(88 mm) | 71% | 4.3 |
| MayMay | 69°F(20°C) | 45°F(7°C) | 2.4 in(60 mm) | 69% | 5.3 |
| JunJuneBest | 74°F(24°C) | 50°F(10°C) | 1.5 in(38 mm) | 63% | 5.8 |
| JulJuly | 83°F(28°C) | 54°F(12°C) | 0.4 in(9 mm) | 59% | 6.6 |
| AugAugust | 85°F(29°C) | 53°F(12°C) | 0.5 in(13 mm) | 58% | 5.8 |
| SepSeptemberBest | 79°F(26°C) | 50°F(10°C) | 1.3 in(34 mm) | 63% | 4.4 |
| OctOctober | 66°F(19°C) | 44°F(6°C) | 3.4 in(87 mm) | 75% | 2.4 |
| NovNovember | 53°F(12°C) | 38°F(3°C) | 7.0 in(178 mm) | 86% | 1.3 |
| DecDecember | 47°F(8°C) | 35°F(2°C) | 8.6 in(219 mm) | 91% | 0.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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