The climate in 61201 Rock Island, IL is a humid continental climate with warm summers and cold winters. The average temperature for the year is around 49°F (9°C), with temperatures reaching as low as -11°F (-24°C) in the winter months and up to 87°F (31°C) during the summer months. Precipitation is fairly evenly spread throughout the year, with an average of 35 inches (89 cm). Snowfall is also common during the winter months, which typically lasts from November through March. Summers are generally hot and humid, with frequent thunderstorms occurring during the afternoon hours.
Rock Island (zip 61201), Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rock Island (zip 61201) averages 28 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Rock Island (zip 61201). The US average is 205 sunny days.
Rock Island (zip 61201) gets some kind of precipitation, on average, 115 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 15
Rain: averages 37 inches of rain a year
Snow: averages 28 inches of snow a year