Weather By Day

August Weather In Rapid City  
August Rapid City Weather
Record High: 107°F
Normal High: 86°F
Normal Low: 57°F
Record Low: 38°F
Avg Monthly Rain: 1.61"
Rec 1 Day Rain: 2.6"

Rapid City Weather In August

In the last 68 years the highest measured temperature in Rapid City South Dakota for August was 107 degrees Fahrenheit, on August 13, 2007, while the normal high temperature is 86. The record low August temperature in Rapid City for the last 68 years was 38 most recently measured on August 12, 1992, while the normal low measured temperature is 57.

United States NWS historical Rapid City August Weather data records that on August 31, 1994, the high temperature did not exceed 51 degrees Fahrenheit, the lowest high measured in Rapid City in the past 68 years. NWS weather data additionally shows that on August 2, 1964, the lowest recorded temperature on that day did not drop below 73 degrees, the highest low measured in Rapid City in the last 68 years.

National Weather Service records indicate that the high temperature in Rapid City on August First averages 88 degrees and the high on the last day of the month averages 83 degrees. The low recorded temperature in Rapid City on August First averages 60 degrees Fahrenheit and the low temperature on the final day of August averages 54 degrees.

Rapid City normally receives an average of 1.61 inches of rain during August. The most precipitation measured in a single day, as indicated by August Rapid City Weather data, was 2.6 inches on August 6, 1982.