Excessive Rainfall Possible This Weekend; October Heat Wave in California
A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >
Current conditions at
Custer, Custer County Airport (KCUT)
Lat: 43.73°NLon: 103.62°WElev: 5600ft.
Fair
55°F
13°C
| Humidity | 55% |
| Wind Speed | W 6 mph |
| Barometer | 30.39 in (1025.7 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 54°F (12°C) |
| Last update | 4 Oct 8:53 am MDT |
Extended Forecast for
Keystone SD
Today
High: 73 °F
Sunny
Tonight
Low: 56 °F
Clear
Monday
High: 86 °F
Sunny
Monday Night
Low: 58 °F
Mostly Clear
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 53 °F
Mostly Clear
Wednesday
High: 75 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
Thursday
High: 70 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 73. South wind 5 to 7 mph, with gusts as high as 21 mph.
Tonight
Clear, with a low around 56. Calm wind becoming southwest around 5 mph after midnight. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 86. West wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 58. Calm wind becoming west around 6 mph in the evening. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 79. Light and variable wind becoming northeast around 6 mph. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 53. Light and variable wind.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Keystone SD
43.89°N 103.43°W (Elev. 4541 ft)
43.89°N 103.43°W (Elev. 4541 ft)
7:47 am MDT Oct 4, 2026
9am MDT Oct 4, 2026-6pm MDT Oct 10, 2026
Additional Resources
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