Welcome to the Banana Belt, one of the mildest climates in the Midwest! Protected by the beautiful Black Hills, Rapid City residents enjoy low humidity levels and infrequent precipitation. Extreme temperatures, either cold or hot, are very rare.

Annual Average Temperature 46.6°F
Monthly Average High Temperature

January
July

 

34°F
86°F

Average Sunny Days 275
Annual Average Rainfall 16.7 inches
Annual Average Snowfall 39.1 inches
Prevailing Winds Northwesterly
Average Elevation 3,162

Click Here to link to the Rapid City office of the National Weather Service.

Listed below are precipitation comparisons with other major cities in the United States. You will see that Rapid City has a uniquely mild climate. All figures shown are 50 year averages.

Rain

City Inches
Boston 54
Washington 52
Chicago 49
Seattle 41
Buffalo 40
Minneapolis 39
Detroit 38
Milwaukee 37
Indianapolis 36
Kansas City 33
Dallas 31
Omaha 27
Spokane 23
Denver 20
Rapid City 17
Phoenix 13

Snow

City Inches
Minneapolis 102
Buffalo 93
Denver 92
Omaha 48
Milwaukee 48
Spokane 44
Chicago 42
Detroit 40
Rapid City 39
Kansas City 36
Boston 30
Washington 21
Indianapolis 15
Dallas 2

Perhaps one of the more subtle but pleasant advantages of moving to Rapid City is its climate. While the Dakotas have been tagged as the breeding ground for icy blizzards and scorching summers, it simply isn’t so in Rapid City. Protected by 6,000 and 7,000 foot peaks in the Black Hills, Rapid City enjoys an envious climatic location.

Summers are warm, but dry, with a long pleasant fall season. Temperatures can be mild even in the winter months. January 1992 had a high temperature of 74o F. The temperature dips below 0o F an average of only 21 days each year. On this page are charts that show Rapid City’s humidity and climatic averages.

Average Relative Humidity Comparison

City

AM

PM

Seattle 82% 62%
Fargo 81% 63%
Chicago 80% 60%
Omaha 80% 59%
Sioux Falls 80% 59%
Minneapolis 78% 59%
Detroit 77% 58%
Boston 72% 58%
Rapid City 71% 50%
Salt Lake City 67% 42%
Denver 67% 39%

Temperature and Precipitation

Month Temp
(o F)
Precip
(“)
January 24 0.40
February 26 0.46
March 34 1.01
April 46 2.00
May 55 3.24
June 65 3.36
July 73 2.32
August 71 1.77
September 61 1.19
October 50 0.99
November 36 0.48
December 28 0.38