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

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

61°F

16°C

Humidity 59%
Wind Speed NE 6 mph
Barometer 30.04 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 Jun 9:35 pm CDT
Extended Forecast for

Tolstoy SD

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Northwest wind around 6 mph becoming calm.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 75. East southeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon.

    High: 75 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Showers likely, mainly after 4am. Increasing clouds, with a low around 51. East wind 15 to 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 65. Breezy, with an east wind 17 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 47. North northeast wind 7 to 14 mph. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72. North northeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. South southwest wind around 9 mph becoming north in the evening. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. Breezy, with a west northwest wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. Breezy, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.

    Low: 47 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. Northwest wind around 6 mph becoming calm.
Saturday
Increasing clouds, with a high near 75. East southeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon.
Saturday Night
Showers likely, mainly after 4am. Increasing clouds, with a low around 51. East wind 15 to 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. High near 65. Breezy, with an east wind 17 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 47. North northeast wind 7 to 14 mph. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72. North northeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 30%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. South southwest wind around 9 mph becoming north in the evening. Chance of precipitation is 70%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. Breezy, with a west northwest wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 47. Breezy, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tolstoy SD
 45.21°N 99.61°W (Elev. 1900 ft)
Last Update:
9:36 pm CDT Jun 19, 2026
Forecast Valid:
9pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation