Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

84°F

29°C

Humidity 31%
Wind Speed NE 13 mph
Barometer 30.15 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 27 Aug 11:35 am MDT
Extended Forecast for

6 Miles NNW Nisland SD

  • Today

    Today: Sunny, with a high near 92. East wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 61. Southeast wind 7 to 16 mph, with gusts as high as 23 mph.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 95. Light and variable wind becoming north 5 to 7 mph in the morning. Winds could gust as high as 16 mph.

    High: 95 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. West wind 5 to 7 mph, with gusts as high as 16 mph.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 92. Light and variable wind becoming northeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 59. North wind 5 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Breezy.

    High: 88 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 92. East wind 6 to 13 mph, with gusts as high as 24 mph.
Tonight
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 61. Southeast wind 7 to 16 mph, with gusts as high as 23 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. Light and variable wind becoming north 5 to 7 mph in the morning. Winds could gust as high as 16 mph.
Friday Night
Mostly cloudy, with a low around 62. West wind 5 to 7 mph, with gusts as high as 16 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. Light and variable wind becoming northeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. North wind 5 to 13 mph becoming west after midnight. Winds could gust as high as 22 mph.
Sunday
Mostly sunny, with a high near 88. Breezy.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 56. Breezy.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 58. Breezy.
Wednesday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Nisland SD
 44.75°N 103.63°W (Elev. 2900 ft)
11:36 am MDT Aug 27, 2026
11am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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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