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Rapid City weather in May 2025
Expect daytime maximum temperatures of 20°C in Rapid City in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 80 mm of rainfall in the month.
- 20°C max day temperature
20
- 9 hours of sunshine per day
- 12 days with some rainfall
12
- 6°C min night temperature
6
- 15 hours of daylight per day
15
- No heat & humidity
0
- 80 mm of monthly rainfall
80
- 7 (High) UV index
7
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Recommended for South Dakota
Expires at 23:59 on Friday 28th Feb 2025 · View all Travelsphere offers
The May weather guide for South Dakota (Rapid City) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Rapid City in May?
Daytime temperatures usually reach 20°C in Rapid City in May, falling to 6°C at night.
How sunny is it in Rapid City in May?
There are normally 9 hours of bright sunshine each day in Rapid City in May - that's 59% of daylight hours.
Does it rain in Rapid City in May?
There are usually 12 days with some rain in Rapid City in May and the average monthly rainfall is 80mm.
Rapid City May sunrise & sunset times
Browse the sunrise and sunset times for Rapid City in May 2025. Select a month to view Rapid City sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 04:44 | 18:57 |
Friday, 16th May 2025 | 04:25 | 19:14 |
Saturday, 31st May 2025 | 04:13 | 19:29 |
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