Rapid City, SD Weather & Climate Normals
What a normal year in Rapid City actually looks like
On the 30-year record NOAA keeps for Rapid City, SD, the comfort score comes out to 37/100, weather-driven: Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Rapid City's weather actually swings
Average temperatures in Rapid City run from 24°F in Jan up to 73°F in Jul, a 48.1°F seasonal swing, one of the widest gaps in this dataset.
How wet Rapid City actually gets
Over a typical year, Rapid City sees about 17.44in of precipitation a year across roughly 96 days with measurable rain or snow, with 48.5in of snow a year.
Rapid City against the rest of the country
Out of 4876 cities scored here, Rapid City comes in at 4748; within SD alone it ranks 16 of 18. Population is about 79,894.
Checking the actual forecast
These figures come from RAPID CITY RGNL AP, SD US, the NOAA station 8.4 miles from Rapid City, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is