Areas of Dangerous Heat and Severe Thunderstorms

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 before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

73°F

23°C

Humidity 41%
Wind Speed S 9 mph
Barometer 30.19 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 26 Aug 10:35 pm MDT
Extended Forecast for

Nisland SD

  • Tonight

    Tonight: Partly cloudy, with a low around 58. East wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 92. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 21 mph.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 62. Southeast wind 7 to 16 mph, with gusts as high as 23 mph.

    Low: 62 °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 96. East wind 5 to 8 mph becoming north in the morning. Winds could gust as high as 16 mph.

    High: 96 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63. West wind 5 to 7 mph, with gusts as high as 16 mph.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 93. West wind 5 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 22 mph.

    High: 93 °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 61.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Breezy.

    High: 89 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. East wind 5 to 8 mph, with gusts as high as 15 mph.
Thursday
Mostly sunny, with a high near 92. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 62. 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 96. East wind 5 to 8 mph becoming north in the morning. Winds could gust as high as 16 mph.
Friday Night
Mostly cloudy, with a low around 63. 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 93. West wind 5 to 13 mph becoming northeast in the afternoon. 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 61.
Sunday
Mostly sunny, with a high near 89. Breezy.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Sunny, with a high near 86.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. Breezy.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 59. Breezy.
Wednesday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Nisland SD
 44.66°N 103.56°W (Elev. 2897 ft)
10:21 pm MDT Aug 26, 2026
10pm MDT Aug 26, 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