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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

36°F

2°C

Humidity 55%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 12 Feb 7:15 pm CST
Extended Forecast for

2 Miles E Reliance SD

  • Tonight

    Tonight: Mostly clear, with a low around 27. North northwest wind around 5 mph becoming light and variable.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56. Southwest wind 3 to 6 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. Southeast wind around 6 mph becoming light and variable.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55. Northwest wind 6 to 9 mph.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Northwest wind around 6 mph becoming south southwest after midnight.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62. South wind 6 to 14 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. South southwest wind 7 to 10 mph becoming north after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 59. North wind 7 to 10 mph becoming east southeast in the afternoon.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Southeast wind 9 to 11 mph.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 27. North northwest wind around 5 mph becoming light and variable.
Friday
Sunny, with a high near 56. Southwest wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 30. Southeast wind around 6 mph becoming light and variable.
Saturday
Sunny, with a high near 55. Northwest wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 29. Northwest wind around 6 mph becoming south southwest after midnight.
Sunday
Mostly sunny, with a high near 62. South wind 6 to 14 mph.
Sunday Night
Mostly cloudy, with a low around 31. South southwest wind 7 to 10 mph becoming north after midnight.
Washington's Birthday
Sunny, with a high near 59. North wind 7 to 10 mph becoming east southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 36. Southeast wind 9 to 11 mph.
Tuesday
A slight chance of rain after noon. Partly sunny, with a high near 59. Chance of precipitation is 20%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 47. Breezy. Chance of precipitation is 20%.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 20%.
Thursday
A slight chance of snow. Partly sunny, with a high near 40. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Reliance SD
 43.88°N 99.54°W (Elev. 1749 ft)
Last Update:
6:36 pm CST Feb 12, 2026
Forecast Valid:
7pm CST Feb 12, 2026-6pm CST Feb 19, 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