Annual mean 11°C · wettest around May · prevailing wind W
Warmest
27.5 °C
Coldest
-1.5 °C
Wettest
37%
Windiest
6.0 m/s
Prevailing
W
4.8 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 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C. Oregon has no sharply defined rainy season: the chance of rain on a given day runs from 28% in September, the driest month, to 32% in May, the wettest. Winds in Oregon are highest in January, averaging 4.5 m/s (16 km/h), and lightest in August, at 2.8 m/s (10 km/h). The prevailing wind is from the W. The clearest skies in Oregon come in July, when the sky is typically 32% covered; January is the cloudiest month, at 70%.
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
-1°C
-3°C
-7°C
29%
70%
4.5 m/s
0
0
3
February
2°C
-2°C
-4°C
29%
58%
4.4 m/s
1
0
8
March
7°C
2°C
1°C
31%
53%
4.4 m/s
5
0
20
April
12°C
6°C
7°C
31%
51%
4.3 m/s
18
2
45
May
19°C
13°C
16°C
32%
46%
3.7 m/s
49
14
63
June
25°C
19°C
24°C
30%
35%
3.5 m/s
68
38
43
July
27°C
21°C
28°C
30%
32%
2.9 m/s
48
63
16
August
26°C
19°C
27°C
30%
34%
2.8 m/s
54
57
24
September
24°C
16°C
22°C
28%
39%
2.9 m/s
69
32
51
October
17°C
10°C
13°C
30%
49%
3.6 m/s
38
7
63
November
8°C
3°C
3°C
30%
53%
4.0 m/s
8
0
29
December
3°C
-0°C
-3°C
29%
66%
4.2 m/s
0
0
9
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 -1°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -3°C to 21°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around May and least likely around September. 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 1°CLow -2°CRain 29%
Winter in Oregon has typical daily highs of about 1°C and lows of about -2°C, with a 29% chance of rain on a given day.
Oregon weather in springMarch to May
High 13°CLow 7°CRain 31%
Spring in Oregon has typical daily highs of about 13°C and lows of about 7°C, with a 31% chance of rain on a given day.
Oregon weather in summerJune to August
High 26°CLow 20°CRain 30%
Summer in Oregon has typical daily highs of about 26°C and lows of about 20°C, with a 30% chance of rain on a given day.
Oregon weather in autumnSeptember to November
High 16°CLow 10°CRain 29%
Autumn in Oregon has typical daily highs of about 16°C and lows of about 10°C, with a 29% 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 28% in September, the driest month, to 32% in May, the wettest.
What time of year is Oregon windiest?
Winds in Oregon are highest in January, averaging 4.5 m/s (16 km/h), and lightest in August, at 2.8 m/s (10 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 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C.