Vivian, SD has a semi-arid climate with cold winters and mild summers. The average temperature in January is around 16°F with the coldest month being December at 11°F. In July, the average temperature in Vivian is approximately 74°F with August being the hottest month at 78°F. Precipitation in Vivian varies greatly from season to season, with an average of 18 inches of rain per year. Most of this precipitation falls during May through September, although snowfall can occur any time from October to April. Vivian's relative humidity stays fairly consistent throughout the year, averaging 59%.
Vivian, South Dakota gets 20 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Vivian averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 228 sunny days per year in Vivian. The US average is 205 sunny days.
Vivian gets some kind of precipitation, on average, 79 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 88 degrees
Winter Low: the January low is 9
Rain: averages 20 inches of rain a year
Snow: averages 41 inches of snow a year