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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

27°F

-3°C

Humidity 75%
Wind Speed E 3 mph
Barometer 30.08 in (1020.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 9 Apr 1:52 am MDT
Extended Forecast for

Hermosa SD

  • Overnight

    Overnight: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 56. Light and variable wind becoming northeast 11 to 16 mph in the morning. Winds could gust as high as 26 mph.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Northeast wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 60. Breezy, with a light southwest wind becoming south 17 to 22 mph in the morning. Winds could gust as high as 37 mph.

    High: 60 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. Breezy, with a south wind 14 to 21 mph, with gusts as high as 36 mph.

    Low: 43 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83. South wind 14 to 17 mph, with gusts as high as 31 mph.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 24 mph.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers after noon. Sunny, with a high near 77. West wind 11 to 17 mph, with gusts as high as 31 mph.

    High: 77 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly before midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. Calm wind.
Thursday
Mostly sunny, with a high near 56. Light and variable wind becoming northeast 11 to 16 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
Mostly clear, with a low around 28. Northeast wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.
Friday
Partly sunny, with a high near 60. Breezy, with a light southwest wind becoming south 17 to 22 mph in the morning. Winds could gust as high as 37 mph.
Friday Night
Mostly cloudy, with a low around 43. Breezy, with a south wind 14 to 21 mph, with gusts as high as 36 mph.
Saturday
Partly sunny, with a high near 83. South wind 14 to 17 mph, with gusts as high as 31 mph.
Saturday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 24 mph.
Sunday
A slight chance of showers after noon. Sunny, with a high near 77. West wind 11 to 17 mph, with gusts as high as 31 mph.
Sunday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 44.
Monday
Showers likely, mainly after noon. Partly sunny, with a high near 65.
Monday Night
Showers likely. Mostly cloudy, with a low around 34.
Tuesday
Rain and snow showers likely. Mostly cloudy, with a high near 48.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 31.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hermosa SD
 43.84°N 103.19°W (Elev. 3383 ft)
Last Update:
12:22 am MDT Apr 9, 2026
Forecast Valid:
2am MDT Apr 9, 2026-6pm MDT Apr 15, 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