Average monthly snow and rainfall in Rapid City (SD)
The mean monthly precipitation over the year in Rapid City (South Dakota), including rain, snow, hail.
- Most rainfall (rainy season) is seen in May.
- Rapid City has dry periods in January, February, March, November and December.
- On average, May is the wettest month with 112 mm of precipitation.
- On average, January is the driest month with 7 mm of precipitation.
- The average amount of annual precipitation is 516 mm.
Forecast for Rapid City (SD)
Fri May 10
20°C | 11°C
N 
29 km/h
29 km/h
almost clear and no rain
Sat May 11
24°C | 9°C
E 14 km/h
14 km/h
partly cloudy and no rain
Sun May 12
23°C | 12°C
N 18 km/h
18 km/h
almost clear and no rain
