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

Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

68°F

20°C

Humidity 53%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 14 Jul 3:15 am MDT
Extended Forecast for

Lead SD

  • Overnight

    Overnight: Mostly clear, with a low around 61. South wind around 5 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Isolated showers and thunderstorms after 2pm. Sunny, with a high near 89. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    High: 89 °F

    Sunny then
    Isolated
    T-storms

  • Monday Night

    Monday Night: Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 60. East wind around 5 mph becoming west after midnight. Chance of precipitation is 40%.

    Low: 60 °F

    Scattered
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after noon. Partly sunny, with a high near 66. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 66 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 49. Northeast wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 54. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.

    High: 54 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Cloudy, with a low around 47. East wind around 5 mph becoming southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 70. East wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms after midnight. Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 61. South wind around 5 mph, with gusts as high as 20 mph.
Monday
Isolated showers and thunderstorms after 2pm. Sunny, with a high near 89. Southwest wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Monday Night
Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 60. East wind around 5 mph becoming west after midnight. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely, mainly after noon. Partly sunny, with a high near 66. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. Northeast wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 54. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms. Cloudy, with a low around 47. East wind around 5 mph becoming southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 50%.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 70. East wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers and thunderstorms after midnight. Mostly clear, with a low around 55.
Friday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Sunday
A chance of showers and thunderstorms. Sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 5322 ft)
Last Update:
1:08 am MDT Jul 14, 2025
Forecast Valid:
3am MDT Jul 14, 2025-6pm MDT Jul 20, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation