Washington, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Washington averages 24 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 194 sunny days per year in Washington. The US average is 205 sunny days.
Washington gets some kind of precipitation, on average, 108 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 86 degrees
Winter Low: the January low is 16
Rain: averages 39 inches of rain a year
Snow: averages 24 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Washington is 7.1 (10=best), which means it is more comfortable than most places in Illinois.
8.5 / 4.9
Summer / Winter
September, June and May are the most pleasant months in Washington, while January and December are the least comfortable months.