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

Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

68°F

20°C

Humidity 38%
Wind Speed E 9 mph
Barometer 29.90 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 23 May 6:55 pm MDT
Extended Forecast for

Nisland SD

  • Tonight

    Tonight: Partly cloudy, with a low around 42. South wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 16 mph.

    Low: 48 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 88. Light and variable wind becoming southeast 12 to 17 mph in the morning. Winds could gust as high as 25 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Southeast wind 8 to 17 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Windy, with a southeast wind 9 to 19 mph increasing to 22 to 32 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 89 °F

    Sunny and
    Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. Windy.

    Low: 58 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Windy.

    High: 83 °F

    Windy. Mostly
    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 54. Windy.

    Low: 54 °F

    Chance
    Showers and
    Windy

Detailed Forecast

Tonight
Partly cloudy, with a low around 42. South wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 15 mph.
Sunday
Sunny, with a high near 83. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
Mostly clear, with a low around 48. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 16 mph.
Memorial Day
Sunny, with a high near 88. Light and variable wind becoming southeast 12 to 17 mph in the morning. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 54. Southeast wind 8 to 17 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 89. Windy, with a southeast wind 9 to 19 mph increasing to 22 to 32 mph in the afternoon. Winds could gust as high as 45 mph.
Tuesday Night
Partly cloudy, with a low around 58. Windy.
Wednesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Windy.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 54. Windy.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77. Breezy.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Breezy.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Windy.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Windy.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nisland SD
 44.66°N 103.56°W (Elev. 2897 ft)
Last Update:
5:16 pm MDT May 23, 2026
Forecast Valid:
7pm MDT May 23, 2026-6pm MDT May 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation