National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

63°F

17°C

Humidity 30%
Wind Speed W 17 G 28 mph
Barometer 30.03 in (1012.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 18 Mar 12:53 pm MDT
Extended Forecast for

6 Miles NNW Keystone SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. Northwest wind 11 to 13 mph, with gusts as high as 32 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 26 mph.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 25 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44. West wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. West wind 3 to 7 mph. Winds could gust as high as 22 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. Light west wind.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Light and variable wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 25 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 34. North wind 6 to 8 mph, with gusts as high as 25 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: A slight chance of snow before noon, then a slight chance of rain. Partly sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 70. Northwest wind 11 to 13 mph, with gusts as high as 32 mph.
Tonight
Partly cloudy, with a low around 42. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 26 mph.
Thursday
Mostly sunny, with a high near 74. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 44. West wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Friday
Mostly sunny, with a high near 75. West wind 3 to 7 mph. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 49. Light west wind.
Saturday
Sunny, with a high near 81. Light and variable wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 34. North wind 6 to 8 mph, with gusts as high as 25 mph.
Sunday
A slight chance of snow before noon, then a slight chance of rain. Partly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Keystone SD
 43.98°N 103.47°W (Elev. 4800 ft)
Last Update:
12:32 pm MDT Mar 18, 2026
Forecast Valid:
1pm MDT Mar 18, 2026-6pm MDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation