Rapid City weather

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The weather guide for Rapid City, South Dakota shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Which is the hottest month in Rapid City?

The hottest time of year in Rapid City is normally July. Expect maximum daytime temperatures to reach 30°C with moderate heat and humidity.

Which month has the most rain in Rapid City?

In terms of rainfall, May is usually the wettest month in Rapid City with 80mm on average. There are normally 12 days in May with some rain.

When is it sunniest in Rapid City?

The sunniest time of year in Rapid City is normally August with bright sunshine on average for 74% of daylight hours; that's 10 hours of sunshine per day.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Rapid City weather with the USA

Below the Rapid City weather chart shows average maximum daytime temperature for Rapid City, South Dakota, USA and the USA (Washington).

Maximum daytime temperature (°C)

Rapid City, South Dakota, USA
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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