Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

67°F

19°C

Humidity 45%
Wind Speed W 7 mph
Barometer 30.07 in (1009.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Jul 12:53 am MDT
Extended Forecast for

6 Miles NNW Keystone SD

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 5am.  Mostly cloudy, with a low around 59. Southwest wind around 5 mph.

    Low: 59 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly between noon and 3pm.  Increasing clouds, with a high near 73. Northwest wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 60%.

    High: 73 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 49. North wind 5 to 10 mph becoming light northeast  after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm.  High near 59. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 90%.

    High: 59 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Cloudy, with a low around 46. Northeast wind around 5 mph becoming calm  in the evening. Winds could gust as high as 15 mph.  Chance of precipitation is 50%.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 72. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 25 mph.

    High: 72 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 56. South wind around 5 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 82. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 5am. Mostly cloudy, with a low around 59. Southwest wind around 5 mph.
Tuesday
Showers and thunderstorms likely, mainly between noon and 3pm. Increasing clouds, with a high near 73. Northwest wind 5 to 10 mph becoming north in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. North wind 5 to 10 mph becoming light northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 59. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms. Cloudy, with a low around 46. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 50%.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Cloudy, then gradually becoming mostly sunny, with a high near 72. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56. South wind around 5 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Friday Night
A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 55.
Saturday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Keystone SD
 43.98°N 103.47°W (Elev. 4800 ft)
12:29 am MDT Jul 15, 2025
1am MDT Jul 15, 2025-6pm MDT Jul 21, 2025
 
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Additional Resources

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Hourly Weather Forecast

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