Dover, IL has a temperate climate, with warm summers and cold winters. The average annual temperature is around 52°F (11°C). Summers in Dover are usually hot and humid, with temperatures reaching up to 86°F (30°C). Winters are cold, with temperatures dropping as low as 15°F (-9°C). Precipitation is moderate throughout the year, typically receiving about 40 inches (101 cm) of rain annually. Snowfall in Dover ranges from 5 to 10 inches (13 to 25 cm) each winter. Overall, Dover enjoys relatively mild weather patterns throughout the year.
Dover, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Dover averages 27 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Dover. The US average is 205 sunny days.
Dover 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 85 degrees
Winter Low: the January low is 14
Rain: averages 38 inches of rain a year
Snow: averages 27 inches of snow a year