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

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

48°F

9°C

Humidity 82%
Wind Speed NW 16 mph
Barometer 29.94 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 12 Oct 9:15 pm CDT
Extended Forecast for

Tolstoy SD

  • Tonight

    Tonight: Cloudy, with a low around 38. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Cloudy

  • Tuesday

    Tuesday: A chance of showers between 11am and 2pm. Cloudy, with a high near 52. North northwest wind around 10 mph. Chance of precipitation is 50%.

    High: 52 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Patchy frost after 5am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 34. Northwest wind 5 to 8 mph.

    Low: 34 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Wednesday

    Wednesday: Patchy frost before 9am. Otherwise, sunny, with a high near 58. Light and variable wind becoming east northeast around 6 mph in the afternoon.

    High: 58 °F

    Patchy Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly after 1am. Partly cloudy, with a low around 39. East wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 30%.

    Low: 39 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 1pm. Partly sunny, with a high near 59. Breezy, with a northwest wind 6 to 11 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    High: 59 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Breezy, with a north northwest wind 24 to 29 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 40 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy

  • Friday

    Friday: Sunny, with a high near 54. North northwest wind 9 to 13 mph becoming south southwest in the afternoon.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 34. South wind 9 to 17 mph, with gusts as high as 26 mph.

    Low: 34 °F

    Clear

Detailed Forecast

Tonight
Cloudy, with a low around 38. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers between 11am and 2pm. Cloudy, with a high near 52. North northwest wind around 10 mph. Chance of precipitation is 50%.
Tuesday Night
Patchy frost after 5am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 34. Northwest wind 5 to 8 mph.
Wednesday
Patchy frost before 9am. Otherwise, sunny, with a high near 58. Light and variable wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 39. East wind around 6 mph becoming south southwest after midnight. Chance of precipitation is 30%.
Thursday
A slight chance of showers before 1pm. Partly sunny, with a high near 59. Breezy, with a northwest wind 6 to 11 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 34. Breezy, with a north northwest wind 24 to 29 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 40 mph.
Friday
Sunny, with a high near 54. North northwest wind 9 to 13 mph becoming south southwest in the afternoon.
Friday Night
Clear, with a low around 34. South wind 9 to 17 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 68.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tolstoy SD
 45.21°N 99.61°W (Elev. 1900 ft)
Last Update:
9:21 pm CDT Oct 12, 2026
Forecast Valid:
9pm CDT Oct 12, 2026-6pm CDT Oct 19, 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