Annual mean 14°C · wettest around December · prevailing wind W
Warmest
30.6 °C
Coldest
4.4 °C
Wettest
68%
Windiest
4.3 m/s
Prevailing
W
3.3 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 Washington over the whole year is 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C. Washington has no sharply defined rainy season: the chance of rain on a given day runs from 50% in October, the driest month, to 61% in December, the wettest. Winds in Washington are highest in March, averaging 3.0 m/s (11 km/h), and lightest in July, at 1.8 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Washington come in November, when the sky is typically 36% covered; May is the cloudiest month, at 51%.
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
-0°C
-0°C
55%
47%
2.6 m/s
3
0
15
February
7°C
2°C
3°C
61%
45%
2.5 m/s
6
0
28
March
11°C
5°C
7°C
57%
43%
3.0 m/s
17
0
45
April
17°C
10°C
13°C
55%
45%
2.8 m/s
40
7
63
May
21°C
15°C
20°C
59%
51%
2.2 m/s
59
23
58
June
27°C
20°C
27°C
52%
39%
2.2 m/s
49
51
24
July
30°C
23°C
32°C
53%
36%
1.8 m/s
15
53
3
August
28°C
21°C
30°C
59%
40%
1.8 m/s
32
58
9
September
25°C
18°C
25°C
56%
43%
1.8 m/s
62
42
35
October
19°C
12°C
18°C
50%
42%
1.9 m/s
57
14
67
November
12°C
5°C
8°C
58%
36%
2.2 m/s
19
1
52
December
7°C
2°C
3°C
61%
47%
2.2 m/s
3
0
27
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 30°C in July, its warmest; the coolest hours of the day run from -0°C to 23°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around December and least likely around October. 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 1°CRain 59%
Winter in Washington has typical daily highs of about 6°C and lows of about 1°C, with a 59% chance of rain on a given day.
Washington weather in springMarch to May
High 17°CLow 10°CRain 57%
Spring in Washington has typical daily highs of about 17°C and lows of about 10°C, with a 57% chance of rain on a given day.
Washington weather in summerJune to August
High 28°CLow 21°CRain 55%
Summer in Washington has typical daily highs of about 28°C and lows of about 21°C, with a 55% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 19°CLow 11°CRain 55%
Autumn in Washington has typical daily highs of about 19°C and lows of about 11°C, with a 55% 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 50% in October, the driest month, to 61% in December, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in March, averaging 3.0 m/s (11 km/h), and lightest in July, at 1.8 m/s (6 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 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C.