Annual mean 9°C · wettest around May · prevailing wind W
Warmest
26.8 °C
Coldest
-4.4 °C
Wettest
74%
Windiest
5.7 m/s
Prevailing
W
4.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Oregon over the whole year is 9°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C. Oregon has no sharply defined rainy season: the chance of rain on a given day runs from 71% in February, the driest month, to 75% in May, the wettest. Winds in Oregon are highest in April, averaging 4.1 m/s (15 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Oregon come in July, when the sky is typically 40% covered; January is the cloudiest month, at 63%.
Month by month Oregon 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
-4°C
-7°C
-9°C
71%
63%
3.5 m/s
0
0
1
February
-1°C
-6°C
-7°C
71%
51%
3.6 m/s
0
0
5
March
6°C
-0°C
-0°C
74%
53%
3.9 m/s
2
0
15
April
12°C
4°C
6°C
74%
55%
4.1 m/s
15
0
41
May
19°C
11°C
16°C
75%
50%
3.4 m/s
48
10
62
June
25°C
18°C
24°C
74%
42%
3.1 m/s
61
36
39
July
26°C
19°C
27°C
73%
40%
2.4 m/s
53
56
21
August
25°C
17°C
25°C
74%
42%
2.3 m/s
63
47
30
September
22°C
14°C
21°C
73%
43%
2.7 m/s
65
25
54
October
14°C
8°C
11°C
73%
50%
3.2 m/s
28
3
54
November
6°C
1°C
1°C
72%
52%
3.5 m/s
6
0
21
December
-0°C
-3°C
-6°C
71%
61%
3.5 m/s
0
0
4
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 Oregon weather by season
Year round, Oregon has days of about -4°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -7°C to 19°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around May and least likely around February. 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.
Oregon weather in winterDecember to February
High -2°CLow -6°CRain 71%
Winter in Oregon has typical daily highs of about -2°C and lows of about -6°C, with a 71% chance of rain on a given day.
Oregon weather in springMarch to May
High 12°CLow 5°CRain 74%
Spring in Oregon has typical daily highs of about 12°C and lows of about 5°C, with a 74% chance of rain on a given day.
Oregon weather in summerJune to August
High 26°CLow 18°CRain 74%
Summer in Oregon has typical daily highs of about 26°C and lows of about 18°C, with a 74% chance of rain on a given day.
Oregon weather in autumnSeptember to November
High 14°CLow 8°CRain 73%
Autumn in Oregon has typical daily highs of about 14°C and lows of about 8°C, with a 73% chance of rain on a given day.
When is the rainy season in Oregon?
Oregon has no sharply defined rainy season: the chance of rain on a given day runs from 71% in February, the driest month, to 75% in May, the wettest.
What time of year is Oregon windiest?
Winds in Oregon are highest in April, averaging 4.1 m/s (15 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Oregon year round?
The average temperature in Oregon over the whole year is 9°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -7°C.