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

Severe Thunderstorm and Excessive Rainfall Potential for the Central U.S. Today

Severe thunderstorms with a threat for large hail, isolated damaging winds and possibly a tornado are expected in parts of eastern Colorado today from mid afternoon to early evening. Several days of heavy rainfall will begin today over the western Gulf Coast where Flood Watches and excessive rainfall outlooks have been issued for today, Saturday, and Sunday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Mostly Cloudy

55°F

13°C

Humidity 63%
Wind Speed N 5 mph
Barometer 29.94 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 21 May 1:35 pm MDT
Extended Forecast for

Lead SD

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 56. Light and variable wind. Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 34. Light northwest wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 100%.

    Low: 34 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 8 to 11 mph, with gusts as high as 29 mph.

    High: 53 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 23 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. Light and variable wind. Winds could gust as high as 15 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: A slight chance of showers and thunderstorms after noon. Sunny, with a high near 81.

    High: 81 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 56. Light and variable wind. Chance of precipitation is 60%.
Tonight
Showers and possibly a thunderstorm. Low around 34. Light northwest wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Friday
A 50 percent chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 8 to 11 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 23 mph.
Saturday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Light and variable wind.
Saturday Night
Mostly clear, with a low around 43. Light and variable wind. Winds could gust as high as 15 mph.
Sunday
Sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 50.
Memorial Day
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52.
Wednesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 5322 ft)
Last Update:
12:31 pm MDT May 21, 2026
Forecast Valid:
1pm MDT May 21, 2026-6pm MDT May 27, 2026
 
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