Weather in Corvallis in September
Corvallis, United States averages a high of 24.4°C (75.9°F) and low of 11.5°C (52.7°F) in September, with 5 rain days and 10.6 hours of daily sunshine. Travel score: 88.9/100 (Excellent). The best time to visit Corvallis is July.
High
24°C76°F
Low
12°C53°F
🌧️
5
rain days
☀️
10.6
hrs/day sunshine
💧
67%
humidity
89— Excellent
September in Corvallis is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Corvallis?
How much does it rain in Corvallis in September?
Corvallis receives an average of 37.9mm of rainfall across 5 rainy days in September. The annual total is 1203.4mm.
What should I pack for Corvallis in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31