Griggsville, IL has a humid continental climate with warm summers and cold winters. The temperatures in the summer can range from the mid-70s to upper-90s while temperatures in the winter can drop to below zero. Precipitation is plentiful throughout the year, with higher amounts usually coming in the spring and fall months. Snowfall can range from light to moderate depending on where you are located in Griggsville. All in all, Griggsville has a mild climate that is favorable for outdoor activities throughout most of the year.
Griggsville (zip 62340), Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Griggsville (zip 62340) averages 18 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 Griggsville (zip 62340). The US average is 205 sunny days.
Griggsville (zip 62340) 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 86 degrees
Winter Low: the January low is 17
Rain: averages 40 inches of rain a year
Snow: averages 18 inches of snow a year