Annual mean 12°C · wettest around January · prevailing wind SW
Warmest
25.0 °C
Coldest
6.5 °C
Wettest
30%
Windiest
3.5 m/s
Prevailing
SW
2.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Corvallis over the whole year is 12°C. August is the hottest month, with highs of about 25°C; February is the coldest, with lows of about 3°C. The rainy (wet) season in Corvallis runs from October to April, peaking in January with a 30% chance of rain on a given day. The dry season is May to September; July is the driest month, at 7%. Winds in Corvallis are highest in July, averaging 2.6 m/s (9 km/h), and lightest in September, at 2.0 m/s (7 km/h). The prevailing wind is from the SW. The clearest skies in Corvallis come in July, when the sky is typically 23% covered; December is the cloudiest month, at 74%.
Month by month Corvallis climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
4°C
4°C
30%
72%
2.3 m/s
1
0
27
February
8°C
3°C
4°C
26%
70%
2.4 m/s
1
0
30
March
10°C
4°C
7°C
24%
62%
2.5 m/s
6
0
49
April
14°C
6°C
10°C
22%
57%
2.4 m/s
22
1
71
May
17°C
10°C
15°C
14%
50%
2.3 m/s
51
7
81
June
21°C
12°C
19°C
12%
40%
2.4 m/s
70
16
72
July
24°C
14°C
23°C
7%
23%
2.6 m/s
76
40
51
August
25°C
14°C
24°C
8%
26%
2.3 m/s
75
43
47
September
21°C
11°C
19°C
12%
40%
2.0 m/s
80
16
74
October
16°C
8°C
13°C
20%
49%
2.0 m/s
39
2
82
November
10°C
6°C
7°C
27%
68%
2.1 m/s
6
0
50
December
7°C
4°C
4°C
28%
74%
2.2 m/s
1
0
25
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Corvallis weather by season
Year round, Corvallis has days of about 7°C at their warmest in December, its coolest month, and 25°C in August, its warmest; the coolest hours of the day run from 3°C to 14°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around January and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Corvallis weather in winterDecember to February
High 7°CLow 4°CRain 28%
Winter in Corvallis has typical daily highs of about 7°C and lows of about 4°C, with a 28% chance of rain on a given day.
Corvallis weather in springMarch to May
High 14°CLow 7°CRain 20%
Spring in Corvallis has typical daily highs of about 14°C and lows of about 7°C, with a 20% chance of rain on a given day.
Corvallis weather in summerJune to August
High 23°CLow 13°CRain 9%
Summer in Corvallis has typical daily highs of about 23°C and lows of about 13°C, with a 9% chance of rain on a given day.
Corvallis weather in autumnSeptember to November
High 15°CLow 8°CRain 20%
Autumn in Corvallis has typical daily highs of about 15°C and lows of about 8°C, with a 20% chance of rain on a given day.
When is the rainy season in Corvallis?
The rainy (wet) season in Corvallis runs from October to April, peaking in January with a 30% chance of rain on a given day. The dry season is May to September; July is the driest month, at 7%.
What time of year is Corvallis windiest?
Winds in Corvallis are highest in July, averaging 2.6 m/s (9 km/h), and lightest in September, at 2.0 m/s (7 km/h). The prevailing wind is from the SW.
What is the average temperature in Corvallis year round?
The average temperature in Corvallis over the whole year is 12°C. August is the hottest month, with highs of about 25°C; February is the coldest, with lows of about 3°C.