Marissa, IL has a humid continental climate characterized by hot summers and cold winters. The summer months of May through September are warm to hot with temperatures reaching the mid 80s Fahrenheit on average, while the winter months are cold, with temperatures dropping below freezing during the night. Precipitation is evenly distributed throughout the year, and snowfall can occur between November and April. The humidity levels in Marissa are generally high, making the summer months quite uncomfortable.
Marissa (zip 62257), Illinois gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Marissa (zip 62257) averages 11 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Marissa (zip 62257). The US average is 205 sunny days.
Marissa (zip 62257) gets some kind of precipitation, on average, 99 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 90 degrees
Winter Low: the January low is 22
Rain: averages 44 inches of rain a year
Snow: averages 11 inches of snow a year