Sioux Falls, SD Weather & Climate Normals
Sioux Falls's real weather, in one number
Sioux Falls, SD scores 46/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Sioux Falls's hottest and coldest months
Sioux Falls's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 16°F, a 57.9°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Sioux Falls
Over a typical year, Sioux Falls sees about 28.3in of precipitation a year across roughly 0 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Sioux Falls ranks
Sioux Falls ranks 2898 of 4876 US cities in this dataset for comfort score, and 2 of 18 within SD. About 209,289 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SIOUX FALLS WFO AP, SD US, 3.3 miles from Sioux Falls, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is