Rapid City Weather in August

What's the weather like in Rapid City (South Dakota) in August 2024?

The climate in Rapid City during August can be summarized as warm and reasonably dry.

August is in the summer in Rapid City and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 13°C (55°F) is normal.

Rapid City weather averages (imperial / metric)
Daytime temperature 29°C 84.2°F
Nightly temperature 13°C 55.4°F
Average temperature 21°C 69.8°F
Daily sunshine 11.2 hrs
Avg rainfall 48 mm 1.9 ins
Rainy days 8 days
Sea temperature 16.6°C 61.8°F
Humidity 53%
Windspeed 16.9kph 11 mph

On average August is the 5th wettest month of the year in Rapid City with around 48mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.2 hours of sunshine per day.

August temperatures in Rapid City

Rapid City average temperature in August

August rainfall

Rapid City average rain in August

August hourly sunshine

Rapid City average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rapid City in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rapid City weather stats

Rapid City weather statistics
Hottest month: July 29.5°C 85.1°F
Driest month: January 8mm 0.3ins
Sunniest month: August 11.2hrs
Coldest month: January 1.2°C 34.2°F
Wettest month: May 80mm 3.1ins
Map showing location of Rapid City (44.08054, -103.23101) Rapid City map pin © Google

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