Heavy Rain Continues in South-central Texas; Heat Wave in California

A slow moving front will maintain the threat of flash/urban flooding across southern and central Texas today and the Central Gulf Coast and Southeast through the weekend. Abnormally, potentially record-breaking temperatures will impact southern California and stretch north toward the Bay Area and Central Valley through next week. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73°NLon: 103.62°WElev: 5600ft.

Overcast

38°F

3°C

Humidity 76%
Wind Speed Calm
Barometer 30.29 in (1024.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 2 Oct 2:53 am MDT
Extended Forecast for

Keystone SD

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 46. South wind around 5 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76. South wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 22 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. Calm wind becoming west around 5 mph after midnight.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73. North wind 5 to 14 mph, with gusts as high as 28 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. North wind 5 to 8 mph becoming calm  in the evening. Winds could gust as high as 23 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 25 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 46. South wind around 5 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 76. South wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 55. Calm wind becoming west around 5 mph after midnight.
Saturday
Sunny, with a high near 73. North wind 5 to 14 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 45. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 23 mph.
Sunday
Sunny, with a high near 68. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 25 mph.
Sunday Night
Clear, with a low around 53.
Monday
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Keystone SD
 43.89°N 103.43°W (Elev. 4541 ft)
2:31 am MDT Oct 2, 2026
3am MDT Oct 2, 2026-6pm MDT Oct 8, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database