Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 24°C. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

Saturday
11th Apr
24

8

7

6
Sunday
12th Apr
21

10

8

6
Monday
13th Apr
19

9

8

6
Tuesday
14th Apr
13

5

2

2
Wednesday
15th Apr
18

4

10

6

5-day weather forecast updated at 04:03 on Saturday 11th April 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 Saturday 11th April 2026

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 24°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

24
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
24
°C wind chill
17
kph wind from SW

Keystone weather for Sunday 12th April 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 21°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the west.

21
°C maximum temperature
10
°C minimum temperature
scattered clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
22
kph wind from W

Keystone weather for Monday 13th April 2026

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 19°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.

19
°C maximum temperature
9
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from W

Keystone weather for Tuesday 14th April 2026

Expect mostly cloudy with light rain in Keystone, South Dakota with a maximum temperature of 13°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a light breeze of 11 kph from the north-west.

13
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
44
% chance of some rain
<2
mm of rainfall expected
13
°C wind chill
11
kph wind from NW

Keystone weather for Wednesday 15th April 2026

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 18°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.