Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 52°F. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

Thursday
23rd Apr
52

34

3

4
Friday
24th Apr
41

28

1

4
Saturday
25th Apr
41

27

0

1
Sunday
26th Apr
36

30

0

1
Monday
27th Apr
43

30

7

7

5-day weather forecast updated at 04:03 on Thursday 23rd 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 Thursday 23rd April 2026

Expect cloudy with sleet or snow in Keystone, South Dakota with a maximum temperature of 52°F, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 59% chance of some sleet or snow and a moderate breeze of 17 mph from the west.

52
°F maximum temperature
34
°F minimum temperature
cloudy with sleet or snow
3
hours of sunshine
4
UV index (Moderate)
59
% chance of some sleet or snow
<2
mm of sleet/snow expected
0
no heat & humidity
17
mph wind from W

Keystone weather for Friday 24th April 2026

Expect cloudy with sleet or snow in Keystone, South Dakota with a maximum temperature of 41°F, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 53% chance of some sleet or snow and a light breeze of 6 mph from the north-west.

41
°F maximum temperature
28
°F minimum temperature
cloudy with sleet or snow
1
hour of sunshine
4
UV index (Moderate)
53
% chance of some sleet or snow
<10
mm of sleet/snow expected
37
°F wind chill
6
mph wind from NW

Keystone weather for Saturday 25th April 2026

Expect cloudy with sleet or snow in Keystone, South Dakota with a maximum temperature of 41°F, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 34% chance of some sleet or snow and a light breeze of 6 mph from the east.

41
°F maximum temperature
27
°F minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
34
% chance of some sleet or snow
<2
mm of sleet/snow expected
37
°F wind chill
6
mph wind from E

Keystone weather for Sunday 26th April 2026

Expect cloudy with some snow in Keystone, South Dakota with a maximum temperature of 36°F, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 86% chance of some snow and a light breeze of 7 mph from the north-east.

36
°F maximum temperature
30
°F minimum temperature
cloudy with some snow
0
hours of sunshine
1
UV index (Low)
86
% chance of some snow
<20
cm of snow expected
28
°F wind chill
7
mph wind from NE

Keystone weather for Monday 27th April 2026

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 43°F, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north-west.