Rapid City Weather in May

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

The climate in Rapid City during May can be summarized as mild and reasonably dry.

May is in the spring in Rapid City and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 20°C (67°F), whilst at night 6°C (42°F) is normal.

Rapid City weather averages (imperial / metric)
Daytime temperature 19.7°C 67.4°F
Nightly temperature 5.8°C 42.4°F
Average temperature 12.7°C 54.9°F
Daily sunshine 9.5 hrs
Avg rainfall 80 mm 3.1 ins
Rainy days 12 days
Sea temperature 10.1°C 50.2°F
Humidity 61%
Windspeed 20.5kph 13 mph

On average May is the wettest month of the year in Rapid City with around 80mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.5 hours of sunshine per day.

May temperatures in Rapid City

Rapid City average temperature in May

May rainfall

Rapid City average rain in May

May hourly sunshine

Rapid City average rain in May

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 May 2024.

Other monthly averages

Best places to visit in May

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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