Effingham County is located in east central Illinois and has a humid continental climate, meaning there are hot summers and cold winters. The average high temperature during the summer months (June-August) is around 82 degrees Fahrenheit, while the winter months (December-February) have average lows of 24 degrees Fahrenheit. Precipitation is relatively consistent throughout the year, although rain tends to be more frequent in spring and fall than during other seasons. The county experiences an average of 55 days of precipitation annually, mostly in the form of rain.
Effingham County, Illinois gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Effingham County averages 15 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Effingham County. The US average is 205 sunny days.
Effingham County gets some kind of precipitation, on average, 107 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 87 degrees
Winter Low: the January low is 20
Rain: averages 43 inches of rain a year
Snow: averages 15 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Effingham County is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.
8 / 5.4
Summer / Winter
September, May and June are the most pleasant months in Effingham County, while January and December are the least comfortable months.