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

73°F

23°C

Humidity 31%
Wind Speed NW 14 G 24 mph
Barometer 30.02 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Jun 5:35 pm CDT
Extended Forecast for

Seneca SD

  • Tonight

    Tonight: Increasing clouds, with a low around 46. Breezy, with a north northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 46 °F

    Increasing
    Clouds and
    Breezy then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. East southeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 4am. Increasing clouds, with a low around 51. East southeast wind 15 to 17 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 65. East wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 48. North wind 8 to 14 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72. North northeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 72 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. West southwest wind around 9 mph becoming north in the evening. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. Breezy, with a west northwest wind 13 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. Breezy, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight.

    Low: 47 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 46. Breezy, with a north northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Saturday
Mostly sunny, with a high near 76. East southeast wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon.
Saturday Night
Showers likely, mainly after 4am. Increasing clouds, with a low around 51. East southeast wind 15 to 17 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. High near 65. East wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 48. North wind 8 to 14 mph. Chance of precipitation is 30%.
Monday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72. North northeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. West southwest wind around 9 mph becoming north in the evening. Chance of precipitation is 70%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. Breezy, with a west northwest wind 13 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 47. Breezy, with a northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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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:
5:36 pm CDT Jun 19, 2026
Forecast Valid:
5pm CDT Jun 19, 2026-6pm CDT Jun 26, 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