Average data for 10 years
1 May
Wednesday
+11°
+6°
2 May
Thursday
+13°
+7°
3 May
Friday
+12°
+8°
4 May
Saturday
+16°
+11°
5 May
Sunday
+17°
+10°
6 May
Monday
+15°
+8°
7 May
Tuesday
+12°
+7°
8 May
Wednesday
+12°
+7°
9 May
Thursday
+12°
+7°
10 May
Friday
+12°
+6°
11 May
Saturday
+14°
+9°
12 May
Sunday
+14°
+9°
13 May
Monday
+14°
+8°
14 May
Tuesday
+14°
+9°
15 May
Wednesday
+15°
+10°
16 May
Thursday
+17°
+12°
17 May
Friday
+17°
+11°
18 May
Saturday
+16°
+11°
19 May
Sunday
+14°
+9°
20 May
Monday
+15°
+11°
21 May
Tuesday
+17°
+12°
22 May
Wednesday
+16°
+11°
23 May
Thursday
+17°
+12°
24 May
Friday
+16°
+11°
25 May
Saturday
+16°
+12°
26 May
Sunday
+17°
+12°
27 May
Monday
+18°
+13°
28 May
Tuesday
+16°
+11°
29 May
Wednesday
+17°
+12°
30 May
Thursday
+18°
+12°
31 May
Friday
+18°
+13°
Cities with similar weather in May
Finland
Helsinki
Estonia
Tallinn
Kazakhstan
Petropavlovsk
Sweden
Stockholm
Norway
Oslo
May in Rapid City is the rainiest month of the year. In May, the weather in Rapid City is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Rapid City has 16 rainy, 7 sunny, 5 cloudy, and 3 partly cloudy days in May. The rains are usually heavy. May as well as February, March, and April is considered the most uncomfortable time to visit Rapid City.