Annual mean 13°C · wettest around July · prevailing wind SW
Warmest
28.7 °C
Coldest
0.9 °C
Wettest
59%
Windiest
5.4 m/s
Prevailing
SW
4.0 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 29°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 43% in October, the driest month, to 50% in July, the wettest. Winds in Washington are highest in March, averaging 3.9 m/s (14 km/h), and lightest in August, at 1.7 m/s (6 km/h). The prevailing wind is from the SW. The clearest skies in Washington come in September, when the sky is typically 28% covered; January is the cloudiest month, at 57%.
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
47%
57%
3.7 m/s
0
0
8
February
6°C
0°C
1°C
48%
49%
3.7 m/s
4
0
22
March
11°C
4°C
6°C
50%
48%
3.9 m/s
13
0
39
April
16°C
9°C
12°C
49%
43%
3.6 m/s
37
4
57
May
22°C
15°C
20°C
50%
42%
3.1 m/s
60
27
50
June
28°C
20°C
28°C
49%
29%
2.5 m/s
44
53
17
July
29°C
22°C
31°C
50%
30%
1.9 m/s
20
57
4
August
28°C
20°C
30°C
47%
32%
1.7 m/s
32
58
9
September
26°C
16°C
26°C
47%
28%
1.9 m/s
50
50
27
October
19°C
10°C
17°C
43%
38%
2.7 m/s
48
15
59
November
11°C
4°C
6°C
47%
39%
3.1 m/s
16
0
42
December
5°C
1°C
1°C
47%
52%
3.4 m/s
2
0
19
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 29°C in July, its warmest; the coolest hours of the day run from -2°C to 22°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around July 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 4°CLow -0°CRain 48%
Winter in Washington has typical daily highs of about 4°C and lows of about -0°C, with a 48% chance of rain on a given day.
Washington weather in springMarch to May
High 17°CLow 9°CRain 50%
Spring in Washington has typical daily highs of about 17°C and lows of about 9°C, with a 50% chance of rain on a given day.
Washington weather in summerJune to August
High 28°CLow 20°CRain 49%
Summer in Washington has typical daily highs of about 28°C and lows of about 20°C, with a 49% chance of rain on a given day.
Washington weather in autumnSeptember to November
High 19°CLow 10°CRain 46%
Autumn in Washington has typical daily highs of about 19°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 43% in October, the driest month, to 50% in July, the wettest.
What time of year is Washington windiest?
Winds in Washington are highest in March, averaging 3.9 m/s (14 km/h), and lightest in August, at 1.7 m/s (6 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 13°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C.