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

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

70°F

21°C

Humidity 78%
Wind Speed SE 15 mph
Barometer 30.25 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 Sep 2:35 pm CDT
Extended Forecast for

Tolstoy SD

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 71. East wind around 14 mph, with gusts as high as 24 mph.

    High: 71 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 56. East wind 11 to 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Slight Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly before 1pm. High near 64. Breezy, with an east wind 17 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers between 7pm and 9pm. Cloudy, with a low around 53. Northeast wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    Showers then
    Cloudy

  • Saturday

    Saturday: A slight chance of showers after 1pm. Cloudy, with a high near 64. Northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 64 °F

    Cloudy then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Cloudy, with a low around 52. East northeast wind 10 to 13 mph.

    Low: 52 °F

    Cloudy

  • Sunday

    Sunday: A chance of showers after 1pm. Cloudy, with a high near 64. East wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 64 °F

    Cloudy then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely. Cloudy, with a low around 51. East wind 9 to 14 mph. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers before 1pm. Mostly cloudy, with a high near 62. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 71. East wind around 14 mph, with gusts as high as 24 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 56. East wind 11 to 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers, mainly before 1pm. High near 64. Breezy, with an east wind 17 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of showers between 7pm and 9pm. Cloudy, with a low around 53. Northeast wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers after 1pm. Cloudy, with a high near 64. Northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday Night
Cloudy, with a low around 52. East northeast wind 10 to 13 mph.
Sunday
A chance of showers after 1pm. Cloudy, with a high near 64. East wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Sunday Night
Showers likely. Cloudy, with a low around 51. East wind 9 to 14 mph. Chance of precipitation is 60%.
Monday
A chance of showers before 1pm. Mostly cloudy, with a high near 62. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Mostly cloudy, with a high near 68. Breezy.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tolstoy SD
 45.23°N 99.61°W (Elev. 1900 ft)
Last Update:
2:21 pm CDT Sep 17, 2026
Forecast Valid:
2pm CDT Sep 17, 2026-6pm CDT Sep 23, 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