Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 10°C. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

Thursday
12th Feb
10

0

9

2
Friday
13th Feb
12

1

9

2
Saturday
14th Feb
11

0

10

2
Sunday
15th Feb
12

1

5

2
Monday
16th Feb
13

1

10

2

5-day weather forecast updated at 04:03 on Thursday 12th February 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 Thursday 12th February 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 10°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

10
°C maximum temperature
0
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
9
°C wind chill
6
kph wind from W

Keystone weather for Friday 13th February 2026

Expect clear skies in Keystone, South Dakota with a maximum temperature of 12°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

12
°C maximum temperature
1
°C minimum temperature
clear skies
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
12
°C wind chill
6
kph wind from W

Keystone weather for Saturday 14th February 2026

Expect clear skies in Keystone, South Dakota with a maximum temperature of 11°C, maximum UV of 2 (Low) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

11
°C maximum temperature
0
°C minimum temperature
clear skies
10
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
6
kph wind from W

Keystone weather for Sunday 15th February 2026

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 12°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

12
°C maximum temperature
1
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
9
kph wind from W

Keystone weather for Monday 16th February 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 13°C, maximum UV of 2 (Low) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.