Annual mean 16°C · wettest around March · prevailing wind W
Warmest
36.2 °C
Coldest
6.6 °C
Wettest
23%
Windiest
5.2 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
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 16°C. July is the hottest month, with highs of about 36°C; January is the coldest, with lows of about -1°C. Washington has no sharply defined rainy season: the chance of rain on a given day runs from 10% in June, the driest month, to 20% in March, the wettest. Winds in Washington are highest in June, averaging 3.9 m/s (14 km/h), and lightest in December, at 2.0 m/s (7 km/h). The prevailing wind is from the W. The clearest skies in Washington come in June, when the sky is typically 3% covered; March is the cloudiest month, at 25%.
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
7°C
-1°C
3°C
18%
23%
2.2 m/s
0
0
29
February
10°C
1°C
5°C
17%
21%
2.8 m/s
5
0
48
March
14°C
4°C
9°C
20%
25%
3.2 m/s
20
0
64
April
20°C
9°C
15°C
17%
12%
3.6 m/s
56
6
75
May
25°C
15°C
20°C
16%
11%
3.8 m/s
69
29
58
June
33°C
21°C
28°C
10%
3%
3.9 m/s
43
60
19
July
36°C
24°C
32°C
15%
5%
3.6 m/s
15
51
5
August
34°C
22°C
31°C
18%
7%
3.3 m/s
20
61
7
September
29°C
17°C
26°C
16%
8%
3.0 m/s
54
57
28
October
22°C
9°C
18°C
15%
8%
2.6 m/s
68
15
71
November
14°C
3°C
10°C
16%
12%
2.3 m/s
23
0
68
December
8°C
-0°C
4°C
17%
19%
2.0 m/s
1
0
35
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 7°C at their warmest in January, its coolest month, and 36°C in July, its warmest; the coolest hours of the day run from -1°C to 24°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around March and least likely around June. 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 8°CLow -0°CRain 17%
Winter in Washington has typical daily highs of about 8°C and lows of about -0°C, with a 17% chance of rain on a given day.
Washington weather in springMarch to May
High 20°CLow 9°CRain 17%
Spring in Washington has typical daily highs of about 20°C and lows of about 9°C, with a 17% chance of rain on a given day.
Washington weather in summerJune to August
High 34°CLow 23°CRain 14%
Summer in Washington has typical daily highs of about 34°C and lows of about 23°C, with a 14% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 22°CLow 10°CRain 16%
Autumn in Washington has typical daily highs of about 22°C and lows of about 10°C, with a 16% 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 10% in June, the driest month, to 20% in March, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in June, averaging 3.9 m/s (14 km/h), and lightest in December, at 2.0 m/s (7 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 16°C. July is the hottest month, with highs of about 36°C; January is the coldest, with lows of about -1°C.