Grinnell, KS has a humid continental climate, with hot summers and cold winters. It experiences four distinct seasons each year, with temperatures ranging from an average of 28掳F in the winter to an average of 84掳F in the summer. Rainfall is fairly evenly spread throughout the year, with most precipitation falling during the late spring and early fall months. The area occasionally experiences extreme weather events such as tornadoes, hail storms and floods. However, generally speaking Grinnell has mild weather and comfortable temperatures during much of the year.
Grinnell, Kansas gets 20 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grinnell averages 22 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 250 sunny days per year in Grinnell. The US average is 205 sunny days.
Grinnell gets some kind of precipitation, on average, 61 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 91 degrees
Winter Low: the January low is 16
Rain: averages 20 inches of rain a year
Snow: averages 22 inches of snow a year