Rapid City weather live forecast

Today's maximum temperature in Rapid City is expected to be 21°C. Select a day from the live weather forecast for Rapid City, South Dakota, USA for more weather parameters.

Tuesday
15th Sep
21

12

11

5
Wednesday
16th Sep
27

15

10

6
Thursday
17th Sep
19

14

4

2
Friday
18th Sep
26

17

6

6
Saturday
19th Sep
20

14

2

3

5-day weather forecast updated at 04:00 on Tuesday 15th September 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 Tuesday 15th September 2026

Expect scattered clouds in Rapid City, South Dakota with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the south-east.

21
°C maximum temperature
12
°C minimum temperature
scattered clouds
11
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
23
kph wind from SE

Rapid City weather for Wednesday 16th September 2026

Expect sunshine and showers in Rapid City, South Dakota with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a moderate breeze of 23 kph from the south.

27
°C maximum temperature
15
°C minimum temperature
sunshine and showers
10
hours of sunshine
6
UV index (High)
10
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
23
kph wind from S

Rapid City weather for Thursday 17th September 2026

Expect isolated thunderstorms in Rapid City, South Dakota with a maximum temperature of 19°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 44% chance of some rain and a gentle breeze of 17 kph from the south-east.

19
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
2
UV index (Low)
44
% chance of some rain
<5
mm of rainfall expected
19
°C wind chill
17
kph wind from SE

Rapid City weather for Friday 18th September 2026

Expect isolated thunderstorms in Rapid City, South Dakota with a maximum temperature of 26°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 14 kph from the south-east.

26
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
52
% chance of some rain
<2
mm of rainfall expected
26
°C wind chill
14
kph wind from SE

Rapid City weather for Saturday 19th September 2026

Expect isolated thunderstorms in Rapid City, South Dakota with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 14 kph from the north.