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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fog/Mist

48°F

9°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 29.75 in
Dewpoint 48°F (9°C)
Visibility 2.50 mi
Wind Chill45°F (7°C)
Last update 12 Oct 7:35 am CDT
Extended Forecast for

Reliance SD

  • Columbus Day

    Columbus Day: A slight chance of showers before 9am. Patchy fog before 10am. Otherwise, cloudy, with a high near 61. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 42. North northwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. North wind 7 to 9 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 60. Northeast wind 7 to 9 mph.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 42. East northeast wind 6 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers before 1pm. Partly sunny, with a high near 61. Breezy, with a northwest wind 9 to 19 mph increasing to 19 to 29 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 38 mph.

    Low: 37 °F

    Mostly Clear
    and Breezy

  • Friday

    Friday: Sunny, with a high near 55. North northwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 55 °F

    Sunny

Detailed Forecast

Columbus Day
A slight chance of showers before 9am. Patchy fog before 10am. Otherwise, cloudy, with a high near 61. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 42. North northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Tuesday
Partly sunny, with a high near 55. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 39. North wind 7 to 9 mph.
Wednesday
Sunny, with a high near 60. Northeast wind 7 to 9 mph.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 42. East northeast wind 6 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers before 1pm. Partly sunny, with a high near 61. Breezy, with a northwest wind 9 to 19 mph increasing to 19 to 29 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 37. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 38 mph.
Friday
Sunny, with a high near 55. North northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Friday Night
Clear, with a low around 36.
Saturday
Sunny, with a high near 69. Breezy.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Reliance SD
 43.88°N 99.6°W (Elev. 1781 ft)
Last Update:
7:21 am CDT Oct 12, 2026
Forecast Valid:
8am CDT Oct 12, 2026-6pm CDT Oct 18, 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