Washington Climate by Month
The climate in Washington is marked by big temperature swings throughout the year.
Temperatures range from pleasant during the warmest months
to cold in the cooler months.
It receives a moderate amount of precipitation.
Now, let’s break down all the climate details for a clearer picture.
Average day and night temperature
In Washington, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a pleasant 21°C in July to a chilly 8°C in January. Nighttime temperatures can drop, with averages reaching 3°C in January.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
On average, Washington receives a reasonable amount of rain/snowfall, with an annual precipitation of 763 mm. The wettest period in Washington occurs in August, which receives around 75 mm of precipitation. During the driest month, March, Washington experiences moderate rainfall, totaling approximately 51 mm. The consistent precipitation levels throughout the year contribute to a relatively stable climate.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Washington, summer days are longer and more sunny, with daily sunshine hours peaking at 6.4 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 hours per average day.Monthly hours of sunshine
Daily hours of sunshine
The best time of year to visit Washington in the United Kingdom
During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
July has an average maximum temperature of 21°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 8°C.
August tops the wettest month list with 75 mm of rainfall.
March is the driest month with 51 mm of precipitation.
May is the sunniest month with an average of 192 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
