Macoupin County in Illinois has a humid continental climate, characterized by hot and humid summers and cold winters. Average temperatures range from the low 20s during winter months to the mid 80s in summer. The area receives an average of 40 inches of precipitation annually, with most of it falling between April and August. Winters are usually dry with occasional snowfall. Severe weather such as tornadoes and severe thunderstorms occur occasionally throughout the year, although they usually only cause minor damage. The area typically experiences several days each year where temperatures reach or exceed 90 degrees Fahrenheit.
Macoupin County, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Macoupin County averages 17 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 Macoupin County. The US average is 205 sunny days.
Macoupin County gets some kind of precipitation, on average, 102 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 20
Rain: averages 40 inches of rain a year
Snow: averages 17 inches of snow a year