The climate in Coal Valley, IL is typical of the Midwest. Summers are hot and humid, with average temperatures ranging from the high 70s to low 90s. Spring brings a mix of sunshine and rain showers, while winters see cold temperatures with snowfall common between November and March. Precipitation is plentiful throughout the year, with an average of around 40 inches annually. Although severe thunderstorms can occur during summer months, overall the climate is mild and pleasant year-round.
Coal Valley, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Coal Valley averages 28 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Coal Valley. The US average is 205 sunny days.
Coal Valley gets some kind of precipitation, on average, 115 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.
Weather Highlights
Summer High: the July high is around 85 degrees
Winter Low: the January low is 15
Rain: averages 37 inches of rain a year
Snow: averages 28 inches of snow a year