57445 Groton, SD has an overall temperate climate with four distinct seasons. Summers are hot and humid with temperatures regularly reaching into the high 80s. Winters are cold and dry, with temperatures dropping to as low as -20 degrees Fahrenheit in the coldest months. Spring is mild but can be quite wet, while autumn brings cool temperatures and changing foliage. Overall, 57445 Groton offers a comfortable climate for its residents and visitors of all ages.
Groton (zip 57445), South Dakota gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Groton (zip 57445) averages 34 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Groton (zip 57445). The US average is 205 sunny days.
Groton (zip 57445) gets some kind of precipitation, on average, 87 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 83 degrees
Winter Low: the January low is 2
Rain: averages 23 inches of rain a year
Snow: averages 34 inches of snow a year