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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

67°F

19°C

Humidity 30%
Wind Speed SW 10 mph
Barometer 29.58 in (998.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 10 Oct 5:52 am MDT
Extended Forecast for

New Underwood SD

  • Today

    Today: Sunny, with a high near 93. Southwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. South wind 7 to 15 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 63. North wind 14 to 17 mph, with gusts as high as 24 mph.

    High: 63 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 43. Northeast wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Rain

  • Columbus Day

    Columbus Day: Cloudy, then gradually becoming mostly sunny, with a high near 60. Northeast wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 60 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39. North wind 6 to 15 mph, with gusts as high as 28 mph.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: A slight chance of rain before noon, then a slight chance of showers after noon. Partly sunny, with a high near 59. Chance of precipitation is 20%.

    High: 59 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly after midnight. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely. Mostly cloudy, with a high near 59.

    High: 59 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 93. Southwest wind 10 to 14 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 50. South wind 7 to 15 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Sunday
Mostly cloudy, with a high near 63. North wind 14 to 17 mph, with gusts as high as 24 mph.
Sunday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 43. Northeast wind 9 to 14 mph, with gusts as high as 24 mph.
Columbus Day
Cloudy, then gradually becoming mostly sunny, with a high near 60. Northeast wind 8 to 14 mph, with gusts as high as 26 mph.
Monday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39. North wind 6 to 15 mph, with gusts as high as 28 mph.
Tuesday
A slight chance of rain before noon, then a slight chance of showers after noon. Partly sunny, with a high near 59. Chance of precipitation is 20%.
Tuesday Night
A chance of rain, mainly after midnight. Partly cloudy, with a low around 42.
Wednesday
Rain likely. Mostly cloudy, with a high near 59.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 43. Breezy.
Thursday
A chance of rain. Partly sunny, with a high near 60. Windy.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 37. Breezy.
Friday
Sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Underwood SD
 44.09°N 102.82°W (Elev. 2894 ft)
Last Update:
6:21 am MDT Oct 10, 2026
Forecast Valid:
6am MDT Oct 10, 2026-6pm MDT Oct 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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