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Weather in Rapid City, South Dakota for May 2027

Your guide to Rapid City weather in May - trends and predictions

    Rain 🌧️

  • Rapid City experiences moderate rainfall in May, with an average of 10 rainy days and a total precipitation of 94.8 mm.

    • More

  • Is May a good time to visit Rapid City? check out the best time to travel to Rapid City page.

  • ✨ Is May a good time to visit Rapid City? – Ask the AI Weatherman

Average dry days
21
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/8°
Temperatures
Average wind speed
26 km/h
Avg max wind
Average humidity
54 %
Avg humidity

Rapid City Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
15°
2
Sunny
20°
3
Sunny
21°
4
Sunny
20°
5
Light rain
16°
6
Patchy rain possible
14°
7
Overcast
18°
8
Overcast
22°
9
Cloudy
20°
10
Sunny
25°
11
Sunny
32°
12
Sunny
28°
13
Cloudy
28°
14
Heavy rain at times
23°
15
Patchy rain possible
22°
16
Light rain
20°
17
Sunny
18°
18
Moderate or heavy rain shower
10°
19
Moderate rain
11°
20
Patchy rain possible
16°
21
Patchy rain possible
17°
22
Light rain
18°
23
Patchy rain possible
18°
24
Patchy rain possible
19°
25
Moderate rain
20°
26
Moderate rain at times
20°
27
Thundery outbreaks possible
22°
28
Thundery outbreaks possible
22°
29
Patchy rain possible
26°
30
Light rain
28°
31
Light rain
25°

Temperatures trend during May in Rapid City

See the weather trend as well as the moving average line

May weather in Rapid City day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Patchy rain possible
Patchy rain possible
 15° /3° 0.2 mm 6
May 2 Sunny
Sunny
 20° /4° 0 mm 7
May 3 Sunny
Sunny
 21° /7° 0.6 mm 7
May 4 Sunny
Sunny
 20° /9° 0.1 mm 8
May 5 Light rain
Light rain
 16° /6° 3.7 mm 6
May 6 Patchy rain possible
Patchy rain possible
 14° /3° 0.1 mm 7
May 7 Overcast
Overcast
 18° /5° 0.6 mm 7
May 8 Overcast
Overcast
 22° /8° 0 mm 7
May 9 Cloudy
Cloudy
 20° /11° 0 mm 7
May 10 Sunny
Sunny
 25° /9° 0 mm 9
May 11 Sunny
Sunny
 32° /13° 0.1 mm 9
May 12 Sunny
Sunny
 28° /15° 0.1 mm 9
May 13 Cloudy
Cloudy
 28° /14° 0.1 mm 8
May 14 Heavy rain at times
Heavy rain at times
 23° /12° 6.1 mm 7
May 15 Patchy rain possible
Patchy rain possible
 22° /9° 0.1 mm 7
May 16 Light rain
Light rain
 20° /8° 4 mm 7
May 17 Sunny
Sunny
 18° /6° 0.6 mm 7
May 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /5° 7.7 mm 3
May 19 Moderate rain
Moderate rain
 11° /1° 13.1 mm 6
May 20 Patchy rain possible
Patchy rain possible
 16° /3° 2 mm 7
May 21 Patchy rain possible
Patchy rain possible
 17° /4° 0.1 mm 4
May 22 Light rain
Light rain
 18° /6° 7.7 mm 7
May 23 Patchy rain possible
Patchy rain possible
 18° /8° 2.3 mm 8
May 24 Patchy rain possible
Patchy rain possible
 19° /9° 1.8 mm 7
May 25 Moderate rain
Moderate rain
 20° /11° 17.7 mm 7
May 26 Moderate rain at times
Moderate rain at times
 20° /11° 7.7 mm 7
May 27 Thundery outbreaks possible
Thundery outbreaks possible
 22° /12° 0.5 mm 7
May 28 Thundery outbreaks possible
Thundery outbreaks possible
 22° /13° 0.1 mm 8
May 29 Patchy rain possible
Patchy rain possible
 26° /12° 2.1 mm 9
May 30 Light rain
Light rain
 28° /14° 8.8 mm 9
May 31 Light rain
Light rain
 25° /13° 7.2 mm 9
Next
Important Notice
Our weather forecast for Rapid City in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rapid City forecast closer to your planned date for the most up-to-date weather information.
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Rapid City in May - FAQ

What are the expected maximum and minimum temperatures in Rapid City during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Rapid City during May?
Moderate rainfall is anticipated in Rapid City during May, with a total of 94.8 mm spread over approximately 10 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Rapid City during May?
The average wind speed in Rapid City during May is 26 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Rapid City

Explore the daily rainfall trends and prepare for Rapid Citys May weather 💧
Typically, Rapid City has 10 rainy days in May with a total of 94.8 mm of rainfall.

UV exposure in Rapid City during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates Where is Rapid City?

Get accurate weather forecasts for Rapid City, located at latitude 44.081 and longitude -103.231. Stay updated with localized weather information tailored for Rapid City.

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