Morgan County, Illinois has a humid continental climate, with cold winters and warm, humid summers. The average annual temperature is around 51 degrees Fahrenheit (10.5°C). Winter temperatures range from an average low of around 19°F (-7.2°C) in January to an average high of about 38°F (3.3°C) in February, while summer temperatures are typically around 79°F (26.1°C). Snowfall usually occurs during the winter months, and rainfall is evenly distributed throughout the year. Summers in Morgan County can be quite hot and humid, but spring and autumn are generally pleasant.
Morgan County, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Morgan County averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Morgan County. The US average is 205 sunny days.
Morgan County gets some kind of precipitation, on average, 104 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 87 degrees
Winter Low: the January low is 18
Rain: averages 40 inches of rain a year
Snow: averages 18 inches of snow a year