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Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

42°F

6°C

Humidity 68%
Wind Speed N 5 mph
Barometer 29.78 in (1004.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 13 Apr 1:53 am MDT
Extended Forecast for

Hill City SD

Red Flag Warning April 13, 02:26am until April 13, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning April 13, 02:26am until April 13, 09:00pm

    NOW until 9:00pm Mon

    Red Flag Warning

  • Overnight

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between noon and 4pm. Mostly sunny, with a high near 62. Light southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 30 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after noon. Partly sunny, with a high near 58. Calm wind becoming south around 5 mph. Winds could gust as high as 15 mph.

    High: 58 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon. Sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 64 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Southwest wind around 5 mph becoming calm. Winds could gust as high as 22 mph.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after noon. Mostly sunny, with a high near 66. Southwest wind 6 to 11 mph, with gusts as high as 34 mph.

    High: 66 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Light west wind.
Monday
A slight chance of showers between noon and 4pm. Mostly sunny, with a high near 62. Light southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 38. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 30 mph.
Tuesday
A 30 percent chance of showers after noon. Partly sunny, with a high near 58. Calm wind becoming south around 5 mph. Winds could gust as high as 15 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Calm wind.
Wednesday
A 20 percent chance of showers after noon. Sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 44. Southwest wind around 5 mph becoming calm. Winds could gust as high as 22 mph.
Thursday
A chance of showers after noon. Mostly sunny, with a high near 66. Southwest wind 6 to 11 mph, with gusts as high as 34 mph.
Thursday Night
Rain showers before 9pm, then rain and snow showers between 9pm and 3am, then snow showers likely after 3am. Mostly cloudy, with a low around 26.
Friday
Snow showers likely. Mostly cloudy, with a high near 37.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 21.
Saturday
A slight chance of snow showers. Mostly sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hill City SD
 43.93°N 103.59°W (Elev. 5200 ft)
Last Update:
2:06 am MDT Apr 13, 2026
Forecast Valid:
2am MDT Apr 13, 2026-6pm MDT Apr 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation