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.

Overcast

64°F

18°C

Humidity 68%
Wind Speed E 14 mph
Barometer 30.18 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 16 Sep 3:15 pm CDT
Extended Forecast for

16 Miles NW Agar SD

  • This Afternoon

    This Afternoon: A slight chance of showers before 4pm. Mostly sunny, with a high near 74. South southeast wind 11 to 16 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 53. Southeast wind 5 to 10 mph becoming light and variable.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 5pm. Mostly cloudy, with a high near 74. Northeast wind 5 to 10 mph becoming east 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 10%.

    High: 74 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 58. Breezy, with an east wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 58 °F

    Heavy Rain
    and Breezy

  • Friday

    Friday: Showers likely before noon. Cloudy, with a high near 69. North northeast wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 54. North northeast wind 8 to 15 mph.

    Low: 54 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 68. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after midnight. Mostly cloudy, with a low around 55. East northeast wind 7 to 11 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 65. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers before 4pm. Mostly sunny, with a high near 74. South southeast wind 11 to 16 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 53. Southeast wind 5 to 10 mph becoming light and variable.
Thursday
A slight chance of showers after 5pm. Mostly cloudy, with a high near 74. Northeast wind 5 to 10 mph becoming east 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 10%.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 58. Breezy, with an east wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday
Showers likely before noon. Cloudy, with a high near 69. North northeast wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Cloudy, with a low around 54. North northeast wind 8 to 15 mph.
Saturday
Mostly cloudy, with a high near 68. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers after midnight. Mostly cloudy, with a low around 55. East northeast wind 7 to 11 mph. Chance of precipitation is 20%.
Sunday
A chance of showers. Mostly cloudy, with a high near 65. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NW Agar SD
 45.02°N 100.29°W (Elev. 1621 ft)
Last Update:
2:21 pm MDT Sep 16, 2026
Forecast Valid:
2pm MDT Sep 16, 2026-6pm MDT Sep 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation