Annual mean 9°C · wettest around October · prevailing wind W
Warmest
19.1 °C
Coldest
4.7 °C
Wettest
31%
Windiest
6.2 m/s
Prevailing
W
5.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Washington over the whole year is 9°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 3°C. Washington has no sharply defined rainy season: the chance of rain on a given day runs from 17% in April, the driest month, to 24% in October, the wettest. Winds in Washington are highest in February, averaging 5.1 m/s (18 km/h), and lightest in July, at 3.6 m/s (13 km/h). The prevailing wind is from the W. The clearest skies in Washington come in April, when the sky is typically 52% covered; December is the cloudiest month, at 59%.
Month by month Washington 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
5°C
3°C
0°C
24%
57%
4.7 m/s
0
0
7
February
7°C
4°C
1°C
23%
57%
5.1 m/s
0
0
13
March
9°C
4°C
3°C
23%
58%
4.4 m/s
1
0
25
April
11°C
5°C
6°C
17%
52%
4.0 m/s
4
0
41
May
14°C
8°C
10°C
17%
54%
3.7 m/s
19
0
69
June
17°C
11°C
13°C
20%
55%
3.9 m/s
39
2
77
July
18°C
13°C
16°C
23%
54%
3.6 m/s
56
4
79
August
18°C
13°C
15°C
21%
53%
3.7 m/s
53
3
80
September
16°C
11°C
13°C
21%
54%
3.7 m/s
33
1
76
October
12°C
9°C
8°C
24%
56%
4.2 m/s
7
0
61
November
8°C
6°C
4°C
24%
59%
4.1 m/s
0
0
29
December
6°C
4°C
1°C
23%
59%
4.4 m/s
0
0
14
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 Washington weather by season
Year round, Washington has days of about 5°C at their warmest in January, its coolest month, and 18°C in July, its warmest; the coolest hours of the day run from 3°C to 13°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around October and least likely around April. 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.
Washington weather in winterDecember to February
High 6°CLow 4°CRain 23%
Winter in Washington has typical daily highs of about 6°C and lows of about 4°C, with a 23% chance of rain on a given day.
Washington weather in springMarch to May
High 11°CLow 6°CRain 19%
Spring in Washington has typical daily highs of about 11°C and lows of about 6°C, with a 19% chance of rain on a given day.
Washington weather in summerJune to August
High 18°CLow 13°CRain 22%
Summer in Washington has typical daily highs of about 18°C and lows of about 13°C, with a 22% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 12°CLow 8°CRain 23%
Autumn in Washington has typical daily highs of about 12°C and lows of about 8°C, with a 23% chance of rain on a given day.
When is the rainy season in Washington?
Washington has no sharply defined rainy season: the chance of rain on a given day runs from 17% in April, the driest month, to 24% in October, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in February, averaging 5.1 m/s (18 km/h), and lightest in July, at 3.6 m/s (13 km/h). The prevailing wind is from the W.
What is the average temperature in Washington year round?
The average temperature in Washington over the whole year is 9°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 3°C.