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

41°F

5°C

Humidity 33%
Wind Speed N 14 G 17 mph
Barometer 30.26 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 19 Apr 10:35 am CDT
Extended Forecast for

Agar SD

  • Today

    Today: Sunny, with a high near 52. North wind 7 to 13 mph.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 31. East wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 75. South wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. West wind around 7 mph becoming north northeast after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. East northeast wind 7 to 14 mph becoming southeast in the afternoon.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51. Southeast wind around 14 mph, with gusts as high as 23 mph.

    Low: 51 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. Breezy, with a southeast wind 13 to 23 mph, with gusts as high as 33 mph.

    High: 89 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Breezy, with a south wind 18 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A chance of showers. Mostly sunny, with a high near 68. Windy, with a south southwest wind 17 to 22 mph becoming west 31 to 36 mph in the afternoon. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers and
    Windy

Detailed Forecast

Today
Sunny, with a high near 52. North wind 7 to 13 mph.
Tonight
Mostly clear, with a low around 31. East wind 7 to 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 75. South wind 11 to 18 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 40. West wind around 7 mph becoming north northeast after midnight.
Tuesday
Sunny, with a high near 77. East northeast wind 7 to 14 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 51. Southeast wind around 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 89. Breezy, with a southeast wind 13 to 23 mph, with gusts as high as 33 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Breezy, with a south wind 18 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
Thursday
A chance of showers. Mostly sunny, with a high near 68. Windy, with a south southwest wind 17 to 22 mph becoming west 31 to 36 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 33. Windy. Chance of precipitation is 30%.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 53. Windy. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 29. Blustery.
Saturday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agar SD
 44.83°N 100.07°W (Elev. 1824 ft)
Last Update:
10:36 am CDT Apr 19, 2026
Forecast Valid:
10am CDT Apr 19, 2026-6pm CDT Apr 25, 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