Summer temperatures · South Dakota
How hot does Sioux Falls get in summer?
Sioux Falls right now
33°FScattered clouds
- Today41°F / 29°FClouds
- Tomorrow49°F / 25°FClear skies
- Monday53°F / 34°FClear skies
Overcast and over it.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical summer, June to August, Sioux Falls averages highs around 83°F and lows around 61°F.
About 15 days a year reach 90°F or hotter, and about one reaches 100°F. About 80 days a year get to 80°F or warmer. That makes it the 50th coolest summer of the 129 US cities we track.
Last updated
The hottest high in the forecast for the next 48 hours is about 49°F.
Sioux Falls averages summer highs around 83°F, which feels generous for a city whose winter highs average about 30°F.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer at a glance
| Average summer high | 83°F |
|---|---|
| Average summer low | 61°F |
| Days a year at 80°F or warmer | 80 |
| Days a year at 90°F or hotter | 15 |
| Days a year at 100°F or hotter | 1 |
| Average winter high, for comparison | 30°F |
Summer here is June to August. Counts are averages a year.
Cities with about the same summer
- Denver, Colorado: highs around 87°F, lows around 57°F
- Fort Wayne, Indiana: highs around 82°F, lows around 62°F
- Akron, Ohio: highs around 83°F, lows around 62°F
More about the weather here
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00014944.