Keystone, SD Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Mostly Cloudy with Fog 33°F
Feels Like 33°F  
Humidity 98% Dew Point 33°F Wind Calm Barometer N/A
Solar Rad 1 w/m2
Report from a MADIS/MESONET weather station 2 miles SW of central Keystone
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Point Forecast at a Glance

ThuNov 20
Thu Nov 20: Patchy Fog, High 47F, Low 34F
47
34
FriNov 21
Fri Nov 21: Mostly Sunny, High 54F, Low 37F
54
37
SatNov 22
Sat Nov 22: Sunny, High 56F, Low 34F
56
34
SunNov 23
Sun Nov 23: Sunny, High 55F, Low 35F
55
35
MonNov 24
Mon Nov 24: Mostly Sunny, High 55F, Low 27F
55
27
TueNov 25
Tue Nov 25: Mostly Sunny, High 34F, Low 18F
34
18
WedNov 26
Wed Nov 26: Mostly Sunny, High 30F
30
 

7-Day Temperature Trend

Week Ahead Summary

High temperatures start near 47°F, reaching 56°F before cooling to 30°F, then recovering to 30°F by week's end. Mostly dry conditions with only one day showing wintry mix chances.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 47°F and lows around 22°F.

This Date in Weather History

1979 - A blizzard struck Cheyenne, WY, producing a record 19.8 inches of snow in 24 hours, and a record total of 25.6 inches in forty hours. Strong winds created huge drifts stopping all transportation.

More on this and other weather history

Keystone, SD 7 Day Weather Forecast Details

Thursday Nov 20

Patchy Fog

Day: Patchy fog before 11am. Otherwise, partly sunny, with a high near 47. Calm wind becoming southeast around 6 mph. Winds could gust as high as 15 mph.

Mostly Cloudy

Night: Mostly cloudy, with a low around 34. Light and variable wind.

Friday Nov 21

Mostly Sunny

Day: Mostly sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 15 mph.

Mostly Clear

Night: Mostly clear, with a low around 37. West wind 5 to 7 mph, with gusts as high as 15 mph.

Saturday Nov 22

Sunny

Day: Sunny, with a high near 56. West wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph.

Mostly Clear

Night: Mostly clear, with a low around 34. West wind 3 to 6 mph.

Sunday Nov 23

Sunny

Day: Sunny, with a high near 55. Light and variable wind becoming south around 6 mph in the morning. Winds could gust as high as 15 mph.

Mostly Clear

Night: Mostly clear, with a low around 35. West wind around 6 mph.

Monday Nov 24

Mostly Sunny

Day: Mostly sunny, with a high near 55.

Rain And Snow

Night: A slight chance of rain before 10pm, then a slight chance of rain and snow between 10pm and midnight, then a slight chance of snow after midnight. Partly cloudy, with a low around 27.

Tuesday Nov 25

Mostly Sunny

Day: Mostly sunny, with a high near 34.

Partly Cloudy

Night: Partly cloudy, with a low around 18.

Wednesday Nov 26

Mostly Sunny

Day: Mostly sunny, with a high near 30.


About Keystone, SD

Keystone is a city in the Black Hills region of Pennington County, South Dakota, United States. The population was 240 at the 2020 census. It had its origins in 1883 as a mining town, and has since transformed itself into a resort town, serving the needs of the millions of visitors to the Mount Rushmore National Memorial, which is located just beyond the town limits. Keystone was heavily damaged in the 1972 Black Hills flood. The town took its name from a local mine, which most likely was named after the keystone Masonic symbol.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.