Grinnell, IA is located in the Midwestern United States and experiences all four seasons throughout the year. Summers are usually hot and humid with temperatures reaching into the high 80s (Fahrenheit) on average. Winters are cold with temperatures often dropping below 0°F at night. Spring is mild with occasional rain showers and fall months are cool with a mix of sun and rain. The area receives approximately 33 inches of precipitation annually, mostly in spring and summer months.
Grinnell (zip 50112), Iowa gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grinnell (zip 50112) averages 27 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 196 sunny days per year in Grinnell (zip 50112). The US average is 205 sunny days.
Grinnell (zip 50112) 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 84 degrees
Winter Low: the January low is 10
Rain: averages 37 inches of rain a year
Snow: averages 27 inches of snow a year