Seneca, SD has a continental climate with hot summers and cold winters. The average temperature in the summer is around 76掳F (24掳C), while in the winter it drops to an average of 16掳F (-9掳C). Rainfall is generally low throughout the year, with an annual precipitation of about 17 inches (430 mm). Snowfall generally occurs between December and March, although snow accumulation is usually light. The area typically experiences moderate winds throughout the year as well.
Seneca (zip 57473), South Dakota gets 20 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Seneca (zip 57473) averages 35 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 203 sunny days per year in Seneca (zip 57473). The US average is 205 sunny days.
Seneca (zip 57473) gets some kind of precipitation, on average, 62 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 5
Rain: averages 20 inches of rain a year
Snow: averages 35 inches of snow a year