Rapid City Weather in May
With daytime temperatures of 18°C (64°F) and nighttime lows of 6°C (43°F), May in Rapid City brings pleasant temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Rapid City in May
With frequent rain showers this month, having an umbrella on hand will keep you dry. You can expect rain on around 14 days based on historical patterns, with 112 mm (4.4 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Rapid City in May
If you're visiting Rapid City in May, expect highs of 18°C (64°F) and overnight lows around 6°C (43°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.If you prefer enjoying temperate temperatures and rain-free days, June, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Rapid City's climate page.
Rapid City Temperature in May
Min Temperature
6°C (43°F)
Max Temperature
18°C (64°F)
Chance of Rain
46%
Precipitation
112 mm (4.4 in)
Rainy days
14 days
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
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What to Wear in Rapid City in May
For Rapid City in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Rapid City in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Rapid City's climate page.
See the full Rapid City climate overview or explore weather in the United States of America.
