Rapid City weather live forecast

Today's maximum temperature in Rapid City is expected to be 9°C. Select a day from the live weather forecast for Rapid City, South Dakota, USA for more weather parameters.

Monday
18th May
9

4

0

1
Tuesday
19th May
15

4

8

7
Wednesday
20th May
21

6

10

7
Thursday
21st May
17

10

3

5
Friday
22nd May
18

9

0

7

5-day weather forecast updated at 04:00 on Monday 18th May 2026 GMT

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The 5-day weather forecast for South Dakota (Rapid City) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Rapid City weather forecast by day

Below are the detailed weather forecasts for Rapid City for the next 5 days.

Rapid City weather for Monday 18th May 2026

Expect mostly cloudy with rain in Rapid City, South Dakota with a maximum temperature of 9°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a fresh breeze of 29 kph from the north.

9
°C maximum temperature
4
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
1
UV index (Low)
92
% chance of some rain
<10
mm of rainfall expected
5
°C wind chill
29
kph wind from N

Rapid City weather for Tuesday 19th May 2026

Expect sunshine and showers in Rapid City, South Dakota with a maximum temperature of 15°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 7% chance of some rain and a light breeze of 11 kph from the north-west.

15
°C maximum temperature
4
°C minimum temperature
sunshine and showers
8
hours of sunshine
7
UV index (High)
7
% chance of some rain
<2
mm of rainfall expected
15
°C wind chill
11
kph wind from NW

Rapid City weather for Wednesday 20th May 2026

Expect scattered clouds in Rapid City, South Dakota with a maximum temperature of 21°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the south.

21
°C maximum temperature
6
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
21
°C wind chill
24
kph wind from S

Rapid City weather for Thursday 21st May 2026

Expect mostly cloudy with light rain in Rapid City, South Dakota with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a gentle breeze of 13 kph from the north.

17
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
43
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
13
kph wind from N

Rapid City weather for Friday 22nd May 2026

Expect mostly cloudy with light rain in Rapid City, South Dakota with a maximum temperature of 18°C, maximum UV of 7 (High) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 13 kph from the north-east.