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

Heavy Rainfall for the Mid-Atlantic; Heat and Wildfire Concerns for the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region today into tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the interior Northwest with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

Lat: 44.05°NLon: 103.05°WElev: 3202ft.

Thunderstorm Light Rain and Windy

83°F

28°C

Humidity 48%
Wind Speed NW 37 G 44 mph
Barometer 29.89 in (1009.3 mb)
Dewpoint 61°F (16°C)
Visibility 8.00 mi
Heat Index84°F (29°C)
Last update 14 Jul 2:52 pm MDT
Extended Forecast for

Hermosa SD

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 101. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 101 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 63. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    Low: 63 °F

    Scattered
    T-storms then
    Isolated
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 79. Breezy, with a north wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 35 mph.

    High: 79 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 54. Breezy, with a north wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely and
    Breezy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 63. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Northeast wind 5 to 15 mph becoming east after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 78. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 60 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 101. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 63. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 79. Breezy, with a north wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 35 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 54. Breezy, with a north wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%.
Wednesday
Showers and possibly a thunderstorm. High near 63. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Northeast wind 5 to 15 mph becoming east after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 78. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Friday Night
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 60.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Monday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hermosa SD
 43.84°N 103.19°W (Elev. 3383 ft)
Last Update:
1:10 pm MDT Jul 14, 2025
Forecast Valid:
3pm MDT Jul 14, 2025-6pm MDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation