Rapid City Weather in October

What's the weather like in Rapid City (South Dakota) in October 2025?

The climate in Rapid City during October can be summarized as cool and dry.

October is in the fall / autumn in Rapid City and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 2°C (35°F) is normal.

Rapid City weather averages (imperial / metric)
Daytime temperature 17.1°C 62.8°F
Nightly temperature 1.5°C 34.7°F
Average temperature 9.3°C 48.7°F
Daily sunshine 7.9 hrs
Avg rainfall 26 mm 1 ins
Rainy days 5 days
Sea temperature 13°C 55.4°F
Humidity 55%
Windspeed 18.4kph 11 mph

On average October is the 6th driest month of the year in Rapid City with around 26mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.9 hours of sunshine per day.

October temperatures in Rapid City

Rapid City average temperature in October

October rainfall

Rapid City average rain in October

October hourly sunshine

Rapid City average rain in October

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 October 2025.

Other monthly averages

Best places to visit in October

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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