Rapid City Weather: August
 |
Average Day Temperature: | 87.1°F |
|
Average Night Temperature: | 66.2°F |
|
Number of Sunny Days: | 22 days |
| Sunshine Hours: | 13.3 - 14.6 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.4 in | |
| detailed information | ||
14 day weather
forecast
forecast
| Rapid City |
When is the Best
Time to Visit?
Time to Visit?
| Rapid City |
Air Temperature in August, °F
The highest day temperature in August 2025 was 101°F. The lowest night temperature was 57°F. The average values for day and night temperatures during August were 83.4°F и 66.8°F respectivly.
Sunny, Cloudy and Gloomy days
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Rapid City is 0.4 in.
Wind Speed in August, mph
The average wind speed in August is 7.8 mph. This value is relatively stable throughout the year.
Average Sunny Hours Per Day
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Rapid City in August is 10.6 hours.
Rapid City on the Weather Map
USA Resorts:
NAME
F°
| Boston |  |
+94 |
| Chicago | |
+82 |
| Hawaii |  |
+82 |
| Houston | |
+102 |
| Las Vegas | |
+124 |
| Los Angeles | |
+92 |
| Maui | |
+78 |
| Miami | |
+92 |
| Myrtle Beach |  |
+84 |
| New York | |
+84 |
| San Diego | |
+80 |
| San Francisco | |
+62 |
| Santa Monica | |
+80 |
| Sarasota | |
+92 |
| Washington | |
+88 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Rapid City
Local time: 12:22
05 aug, wednesday
| 1500 |  |
92°F | W 14 mph |
| 1800 | |
92°F | W 9 mph |
| 2100 |  |
82°F | SE 2 mph |
06 aug, thursday
| 0000 | |
68°F | E 6 mph |
| 0300 | |
66°F | E 6 mph |
| 0600 | |
64°F | E 5 mph |
| 0900 | |
86°F | N 4 mph |
| 1200 | |
100°F | W 10 mph |