National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

70°F

21°C

Humidity 21%
Wind Speed S 20 G 31 mph
Barometer 29.84 in (1011.0 mb)
Dewpoint 28°F (-2°C)
Visibility NA
Last update 20 Apr 2:56 pm CDT
Extended Forecast for

Ortley SD

Red Flag Warning April 20, 03:26pm until April 20, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning April 20, 03:26pm until April 20, 08:00pm

    NOW until 8:00pm Mon

    Red Flag Warning

  • This Afternoon

    High: 66 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 41. Southwest wind 6 to 11 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. Northeast wind 6 to 8 mph becoming east southeast in the afternoon.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Southeast wind around 10 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. Breezy, with a south southeast wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 83 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57. Breezy, with a south wind 21 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly sunny, with a high near 72. Breezy, with a southwest wind 20 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 35. Breezy, with a west wind 22 to 24 mph, with gusts as high as 37 mph.

    Low: 35 °F

    Partly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 66. Breezy, with a southwest wind around 21 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 41. Southwest wind 6 to 11 mph becoming north northeast after midnight. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 69. Northeast wind 6 to 8 mph becoming east southeast in the afternoon.
Tuesday Night
Mostly clear, with a low around 49. Southeast wind around 10 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 83. Breezy, with a south southeast wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.
Wednesday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57. Breezy, with a south wind 21 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 40%.
Thursday
A chance of showers. Mostly sunny, with a high near 72. Breezy, with a southwest wind 20 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 35. Breezy, with a west wind 22 to 24 mph, with gusts as high as 37 mph.
Friday
Partly sunny, with a high near 49. Breezy, with a west wind 20 to 23 mph, with gusts as high as 37 mph.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Mostly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Mostly sunny, with a high near 49.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ortley SD
 45.33°N 97.18°W (Elev. 1850 ft)
Last Update:
2:36 pm CDT Apr 20, 2026
Forecast Valid:
3pm CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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