Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Light Drizzle

61°F

16°C

Humidity 100%
Wind Speed NE 3 mph
Barometer 30.15 in
Dewpoint 61°F (16°C)
Visibility 4.00 mi
Last update 30 Aug 12:55 am MDT
Extended Forecast for

2 Miles SE Saint Onge SD

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am.  Patchy fog.  Otherwise, mostly cloudy, with a low around 56. West wind around 5 mph.

    Low: 56 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 68. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.  Chance of precipitation is 70%.

    High: 68 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming southwest after midnight.  Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 73. Southwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 73 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. East wind 5 to 10 mph becoming southwest after midnight.

    Low: 54 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 80. Southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. North wind around 10 mph becoming west in the evening. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. West wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly after midnight.  Increasing clouds, with a low around 52.

    Low: 52 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Patchy fog. Otherwise, mostly cloudy, with a low around 56. West wind around 5 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 68. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming southwest after midnight. Chance of precipitation is 40%.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. Southwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Sunday Night
Mostly clear, with a low around 54. East wind 5 to 10 mph becoming southwest after midnight.
Labor Day
Sunny, with a high near 80. Southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 57. North wind around 10 mph becoming west in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 78. West wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after midnight. Increasing clouds, with a low around 52.
Wednesday
A slight chance of showers before noon. Mostly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Saint Onge SD
 44.55°N 103.73°W (Elev. 3442 ft)
1:09 am MDT Aug 30, 2025
1am MDT Aug 30, 2025-6pm MDT Sep 5, 2025
 
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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