Normal

16.15 in  

Maximum  -  1982

25.97 in  

Minimum   -  1974

9.12 in  

Rapid City, South Dakota 1961-1990

Mean Annual

46.8 °F  

Daily Maximum  -  07/06/1973

110 °F  

Daily Minimum   -  02/02/1996

-31 °F  

Rapid City, South Dakota 1948-1996

Growing Season

150 days  

Elevation of irrigable area

3,000 ft  

Drainage area above Pactola Dam

292 mi²  

Annual discharge:

    Maximum  -  1965

68,719 acre-ft 

    Minimum   -  1961

9,237 acre-ft 

    Average    -  1953-1996

30,469 acre-ft