Annual mean 12°C · wettest around May · prevailing wind SW
Warmest
28.0 °C
Coldest
-2.5 °C
Wettest
66%
Windiest
5.4 m/s
Prevailing
SW
4.4 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 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -5°C. Washington has no sharply defined rainy season: the chance of rain on a given day runs from 56% in January, the driest month, to 63% in May, the wettest. Winds in Washington are highest in March, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Washington come in June, when the sky is typically 28% covered; January is the cloudiest month, at 58%.
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
-5°C
-7°C
56%
58%
3.9 m/s
0
0
3
February
2°C
-3°C
-4°C
56%
46%
4.0 m/s
2
0
12
March
8°C
2°C
3°C
61%
49%
4.3 m/s
6
0
27
April
14°C
6°C
9°C
62%
44%
4.2 m/s
25
1
51
May
21°C
13°C
19°C
63%
43%
3.5 m/s
56
19
56
June
27°C
19°C
26°C
60%
28%
3.0 m/s
52
50
25
July
28°C
21°C
29°C
63%
30%
2.3 m/s
34
60
9
August
27°C
19°C
28°C
61%
31%
2.2 m/s
46
57
16
September
25°C
15°C
24°C
59%
29%
2.4 m/s
59
41
39
October
17°C
9°C
13°C
61%
40%
3.1 m/s
39
8
58
November
8°C
2°C
3°C
58%
42%
3.6 m/s
9
0
30
December
3°C
-2°C
-3°C
57%
52%
3.8 m/s
0
0
10
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 -5°C to 21°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around May and least likely around January. 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 1°CLow -3°CRain 56%
Winter in Washington has typical daily highs of about 1°C and lows of about -3°C, with a 56% chance of rain on a given day.
Washington weather in springMarch to May
High 14°CLow 7°CRain 62%
Spring in Washington has typical daily highs of about 14°C and lows of about 7°C, with a 62% chance of rain on a given day.
Washington weather in summerJune to August
High 27°CLow 19°CRain 61%
Summer in Washington has typical daily highs of about 27°C and lows of about 19°C, with a 61% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 17°CLow 9°CRain 59%
Autumn in Washington has typical daily highs of about 17°C and lows of about 9°C, with a 59% 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 56% in January, the driest month, to 63% in May, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in March, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Washington year round?
The average temperature in Washington over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -5°C.