MilBases
Weather & Climate at Ellsworth Air Force Base
Rapid City, SD
Summary of the weather and climate in Rapid City, SD:
- The average high is 60.2°F and the average low is 33.8°F.
- The hottest month is July with a high of 87.1°F.
- The coldest month is January with a low of 12.9°F.
- Annual rainfall is 16.29 inches; the rainiest month is May (3.22 in).
- Annual snowfall is 41.1 inches; the snowiest month is March (8.7 in).
Source: NOAA climate normals.
Temperatures through the year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Bars span each month's average low to average high (10°F – 90°F scale).
Monthly averages
| Month | High (°F) | Low (°F) | Rain (in) | Snow (in) | |
|---|---|---|---|---|---|
| January | 37.1 | 12.9 | 0.3 | 4.4 | |
| February | 39.6 | 15.1 | 0.44 | 5.8 | |
| March | 47.9 | 22.9 | 0.93 | 8.7 | |
| April | 58.3 | 31.8 | 1.8 | 7.9 | |
| May | 67.8 | 42.1 | 3.22 | 1.1 | |
| June | 77.8 | 51.2 | 2.53 | 0 | |
| July | 87.1 | 58.1 | 1.85 | 0 | |
| August | 86.4 | 56.6 | 1.56 | 0 | |
| September | 75.6 | 46 | 1.29 | 0.2 | |
| October | 61.4 | 34.1 | 1.42 | 1.6 | |
| November | 47 | 22.1 | 0.53 | 6 | |
| December | 36.9 | 13 | 0.42 | 5.4 |