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.

Fair

72°F

22°C

Humidity 22%
Wind Speed NE 10 G 17 mph
Barometer 29.90 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 16 May 12:35 pm CDT
Extended Forecast for

Agar SD

Red Flag Warning May 16, 03:00pm until May 16, 10:00pm
Click here for hazard details and duration
Red Flag Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. East wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 45. Breezy, with an east wind 21 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Sunday

    Sunday: Showers and thunderstorms before 4pm, then showers likely. High near 67. Breezy, with an east wind 13 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers before 8pm, then a chance of showers after midnight. Mostly cloudy, with a low around 37. Breezy, with a north wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.

    Low: 37 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 51. Breezy, with a north wind 21 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 51 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers, mainly before 1am. Low around 33. Breezy, with a north northwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 30 mph.

    High: 52 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Areas of frost after 2am. Otherwise, partly cloudy, with a low around 31. North northwest wind 5 to 13 mph becoming east after midnight.

    Low: 31 °F

    Mostly Cloudy
    then Areas
    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 65. Southeast wind 6 to 13 mph.

    High: 65 °F

    Frost then
    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. East wind 10 to 15 mph, with gusts as high as 23 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 45. Breezy, with an east wind 21 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms before 4pm, then showers likely. High near 67. Breezy, with an east wind 13 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm, then a chance of showers after midnight. Mostly cloudy, with a low around 37. Breezy, with a north wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Monday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 51. Breezy, with a north wind 21 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers, mainly before 1am. Low around 33. Breezy, with a north northwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Mostly cloudy, with a high near 52. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 30 mph.
Tuesday Night
Areas of frost after 2am. Otherwise, partly cloudy, with a low around 31. North northwest wind 5 to 13 mph becoming east after midnight.
Wednesday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 65. Southeast wind 6 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
A slight chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 41.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Agar SD
 44.83°N 100.07°W (Elev. 1824 ft)
Last Update:
12:36 pm CDT May 16, 2026
Forecast Valid:
1pm CDT May 16, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation