Heavy Rainfall and Flooding Concerns in the Southwest; Coastal Low to Impact the East Coast

Deep tropical moisture will lead to widespread showers and thunderstorms capable of producing flash flooding through early next week over the Southwest and Four Corners. A coastal storm is expected to impact the southeast U.S. coast and mid-Atlantic regions with flooding, dangerous rip currents, gusty winds and heavy rain up much of the East Coast through early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

64°F

18°C

Humidity 56%
Wind Speed SW 8 mph
Barometer 29.79 in (1003.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 11 Oct 12:53 pm MDT
Extended Forecast for

5 Miles ESE Keystone SD

  • This Afternoon

    This Afternoon: A 30 percent chance of showers after 2pm.  Mostly cloudy, with a steady temperature around 69. Southwest wind 10 to 13 mph, with gusts as high as 28 mph.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 57. Breezy, with a southwest wind 9 to 14 mph becoming west 21 to 26 mph after midnight. Winds could gust as high as 37 mph.

    Low: 57 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a temperature falling to around 56 by 5pm. Breezy, with a west wind 24 to 29 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 61 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 15 mph.

    Low: 31 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 55. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 28 mph.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 41. Southeast wind 7 to 11 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before noon.  Cloudy, then gradually becoming mostly sunny, with a high near 58. Southeast wind 7 to 10 mph, with gusts as high as 23 mph.

    High: 58 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. Southeast wind 5 to 8 mph, with gusts as high as 17 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers after noon.  Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers after 2pm. Mostly cloudy, with a steady temperature around 69. Southwest wind 10 to 13 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 57. Breezy, with a southwest wind 9 to 14 mph becoming west 21 to 26 mph after midnight. Winds could gust as high as 37 mph.
Sunday
Sunny, with a temperature falling to around 56 by 5pm. Breezy, with a west wind 24 to 29 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 40 mph.
Sunday Night
Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Columbus Day
Mostly sunny, with a high near 55. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 28 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 41. Southeast wind 7 to 11 mph, with gusts as high as 24 mph.
Tuesday
A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 58. Southeast wind 7 to 10 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 46. Southeast wind 5 to 8 mph, with gusts as high as 17 mph.
Wednesday
A chance of showers after noon. Mostly cloudy, with a high near 59.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Thursday
A chance of showers. Partly sunny, with a high near 60.
Thursday Night
A chance of showers. Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Keystone SD
 43.88°N 103.34°W (Elev. 3999 ft)
1:17 pm MDT Oct 11, 2025
1pm MDT Oct 11, 2025-6pm MDT Oct 17, 2025
 
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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