Sumner, SD has a continental climate with chilly winters and hot summers. Winter temperatures range from an average high of 24°F to an average low of 8°F. In the summer months, temperatures can reach highs in the mid 80's with lows in the upper 50's. The area receives an average of 36 inches of precipitation per year, most of which falls from April through September. Winters are generally dry and typically experience moderate snowfall amounts. Sumner experiences all four seasons and enjoys short springs and falls which transition to warm or cool weather depending on the season.
Sumner, South Dakota gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sumner averages 24 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 206 sunny days per year in Sumner. The US average is 205 sunny days.
Sumner gets some kind of precipitation, on average, 73 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 2
Rain: averages 23 inches of rain a year
Snow: averages 24 inches of snow a year