Thayer, IL experiences a typical Midwestern humid continental climate, with hot summers and cold winters. In the summer the average temperature is around 81 °F (27 °C), with occasional days reaching the mid-90s °F (30-35°C). The winter months average around 31 °F (-1°C) with temperatures sometimes dipping below 0 °F (-18°C). Precipitation is fairly evenly distributed over the year, averaging around 41 inches (104 cm). Snowfall can be significant during the winter months, with an annual average of 24 inches (61 cm).
Thayer, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Thayer averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 194 sunny days per year in Thayer. The US average is 205 sunny days.
Thayer gets some kind of precipitation, on average, 97 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 19
Rain: averages 38 inches of rain a year
Snow: averages 18 inches of snow a year