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Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

77°F

25°C

Humidity 36%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 12 Jul 5:15 am MDT
Extended Forecast for

Spearfish SD

Heat Advisory July 12, 05:19am until July 14, 08:00pm
Red Flag Warning July 12, 10:00am until July 12, 09:00pm
Click here for hazard details and duration
Heat Advisory
Red Flag Warning
  •  
    Heat Advisory July 12, 05:19am until July 14, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Today

    High: 104 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 102. South wind 5 to 14 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 102 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. Southeast wind 5 to 11 mph becoming south in the evening. Winds could gust as high as 20 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 23 mph.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. South wind 7 to 15 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 104. Light and variable wind becoming southeast 11 to 16 mph in the afternoon. Winds could gust as high as 26 mph.
Tonight
Mostly clear, with a low around 74. South wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny and hot, with a high near 102. South wind 5 to 14 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 71. Southeast wind 5 to 11 mph becoming south in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny and hot, with a high near 101. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 72. South wind 7 to 15 mph, with gusts as high as 23 mph.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 69.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Friday Night
Mostly clear, with a low around 68.
Saturday
Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.5°N 103.85°W (Elev. 3911 ft)
Last Update:
3:16 am MDT Jul 12, 2026
Forecast Valid:
5am MDT Jul 12, 2026-6pm MDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation