Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 18°C. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

Tuesday
10th Nov
18

6

8

2
Wednesday
11th Nov
15

5

4

2
Thursday
12th Nov
16

5

8

2
Friday
13th Nov
17

5

9

2
Saturday
14th Nov
17

7

8

2

5-day weather forecast updated at 04:03 on Tuesday 10th November 2026 GMT

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

Keystone weather forecast by day

Below are the detailed weather forecasts for Keystone for the next 5 days.

Keystone weather for Tuesday 10th November 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 18°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-west.

18
°C maximum temperature
6
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
18
°C wind chill
19
kph wind from NW

Keystone weather for Wednesday 11th November 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 15°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

15
°C maximum temperature
5
°C minimum temperature
scattered clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
15
°C wind chill
11
kph wind from NW

Keystone weather for Thursday 12th November 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 16°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

16
°C maximum temperature
5
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
16
°C wind chill
8
kph wind from W

Keystone weather for Friday 13th November 2026

Expect clear skies in Keystone, South Dakota with a maximum temperature of 17°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

17
°C maximum temperature
5
°C minimum temperature
clear skies
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
17
°C wind chill
13
kph wind from SW

Keystone weather for Saturday 14th November 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 17°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.