The climate in 62440 Lerna, IL is generally quite mild. Summers are warm and humid with temperatures typically reaching into the mid-80s, while winters tend to be cold and wet with temperatures dropping to below freezing on average. Precipitation levels do vary throughout the year, but overall there tends to be an even spread of rainfall from month to month. The area does experience snowfall during the winter months, with occasional severe weather events occurring sporadically throughout the year including thunderstorms and tornadoes.
Lerna (zip 62440), Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lerna (zip 62440) averages 16 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 Lerna (zip 62440). The US average is 205 sunny days.
Lerna (zip 62440) gets some kind of precipitation, on average, 112 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 20
Rain: averages 40 inches of rain a year
Snow: averages 16 inches of snow a year