Annual mean 13°C · wettest around May · prevailing wind W
Warmest
29.1 °C
Coldest
1.9 °C
Wettest
50%
Windiest
4.7 m/s
Prevailing
W
3.4 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 Washington over the whole year is 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C. Washington has no sharply defined rainy season: the chance of rain on a given day runs from 40% in November, the driest month, to 53% in May, the wettest. Winds in Washington are highest in March, averaging 3.4 m/s (12 km/h), and lightest in August, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Washington come in July, when the sky is typically 35% covered; May is the cloudiest month, at 53%.
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
2°C
-2°C
-3°C
40%
52%
3.2 m/s
1
0
9
February
5°C
0°C
-0°C
42%
47%
3.2 m/s
3
0
19
March
9°C
3°C
4°C
43%
45%
3.4 m/s
11
0
37
April
16°C
8°C
11°C
47%
46%
3.2 m/s
34
4
57
May
20°C
13°C
18°C
53%
53%
2.4 m/s
55
18
61
June
25°C
18°C
25°C
49%
38%
2.2 m/s
60
44
34
July
28°C
21°C
30°C
48%
35%
1.8 m/s
28
59
8
August
27°C
19°C
28°C
48%
40%
1.7 m/s
43
57
16
September
23°C
16°C
23°C
50%
41%
1.8 m/s
63
35
46
October
18°C
11°C
16°C
48%
42%
2.2 m/s
50
11
68
November
10°C
4°C
6°C
40%
39%
2.7 m/s
13
0
43
December
4°C
1°C
-0°C
43%
50%
2.8 m/s
0
0
15
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 2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -2°C to 21°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around May and least likely around November. 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 4°CLow -0°CRain 42%
Winter in Washington has typical daily highs of about 4°C and lows of about -0°C, with a 42% chance of rain on a given day.
Washington weather in springMarch to May
High 15°CLow 8°CRain 48%
Spring in Washington has typical daily highs of about 15°C and lows of about 8°C, with a 48% chance of rain on a given day.
Washington weather in summerJune to August
High 27°CLow 20°CRain 48%
Summer in Washington has typical daily highs of about 27°C and lows of about 20°C, with a 48% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 17°CLow 10°CRain 46%
Autumn in Washington has typical daily highs of about 17°C and lows of about 10°C, with a 46% 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 40% in November, the driest month, to 53% in May, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in March, averaging 3.4 m/s (12 km/h), and lightest in August, at 1.7 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 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C.