The climate in Marshall County, IL is generally mild and humid throughout the year. Summers are typically warm and humid, with temperatures reaching into the low to mid 80s during the day and dropping into the upper 50s at night. Winters are cold, with temperatures ranging from the teens to upper 30s during the day and dipping below zero at night. Precipitation tends to be moderate all year round, though snowfall can range from light to heavy depending on the season. The area also receives occasional thunderstorms in the summer months which can bring heavy rains and strong winds.
Marshall County, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Marshall County averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Marshall County. The US average is 205 sunny days.
Marshall County gets some kind of precipitation, on average, 101 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 86 degrees
Winter Low: the January low is 16
Rain: averages 39 inches of rain a year
Snow: averages 20 inches of snow a year