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.

Mostly Cloudy

39°F

4°C

Humidity 81%
Wind Speed W 5 mph
Barometer 30.05 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 25 Apr 7:55 am CDT
Extended Forecast for

Seneca SD

  • Today

    Today: A slight chance of showers between 1pm and 2pm. Mostly cloudy, with a high near 49. Southwest wind 8 to 10 mph becoming northwest in the morning. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South southeast wind 6 to 10 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly after 1pm. High near 52. Breezy, with an east wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers. Low around 37. Breezy, with an east wind 18 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Showers and
    Breezy

  • Monday

    Monday: Showers. High near 49. Windy, with a north northwest wind 22 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Showers and
    Windy

  • Monday Night

    Monday Night: A slight chance of rain showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 28. Blustery, with a northwest wind 21 to 26 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow and
    Blustery

  • Tuesday

    Tuesday: A slight chance of showers after 1pm. Partly sunny, with a high near 51. North northwest wind around 14 mph. Chance of precipitation is 20%.

    High: 51 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30. West southwest wind 7 to 11 mph.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 58. West southwest wind 8 to 14 mph becoming northwest in the afternoon. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers

Detailed Forecast

Today
A slight chance of showers between 1pm and 2pm. Mostly cloudy, with a high near 49. Southwest wind 8 to 10 mph becoming northwest in the morning. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 31. South southeast wind 6 to 10 mph.
Sunday
Showers, mainly after 1pm. High near 52. Breezy, with an east wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers. Low around 37. Breezy, with an east wind 18 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers. High near 49. Windy, with a north northwest wind 22 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A slight chance of rain showers before 10pm, then a slight chance of snow showers between 10pm and 1am. Mostly cloudy, with a low around 28. Blustery, with a northwest wind 21 to 26 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers after 1pm. Partly sunny, with a high near 51. North northwest wind around 14 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 30. West southwest wind 7 to 11 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 58. West southwest wind 8 to 14 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Seneca SD
 45.06°N 99.51°W (Elev. 1893 ft)
Last Update:
7:36 am CDT Apr 25, 2026
Forecast Valid:
8am CDT Apr 25, 2026-6pm CDT May 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation