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.

74°F

23°C

Humidity 82%
Wind Speed S 6 mph
Barometer 29.86 in (1009.2 mb)
Dewpoint 68°F (20°C)
Visibility NA
Last update 24 Jul 8:56 pm CDT
Extended Forecast for

Ortley SD

Heat Advisory July 25, 01:00pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 10pm and 11pm. Partly cloudy, with a steady temperature around 71. South southwest wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Patchy smoke after 1pm. Mostly sunny and hot, with a high near 95. South southwest wind 6 to 9 mph becoming northwest in the morning.

    High: 95 °F

    Mostly Sunny
    then Patchy
    Smoke

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 75. South southeast wind 8 to 10 mph becoming west southwest in the evening. Winds could gust as high as 20 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 93. Heat index values as high as 98. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South southeast wind around 8 mph becoming west northwest after midnight.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. North wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. East wind 5 to 8 mph becoming west in the afternoon.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Northeast wind around 7 mph.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 10pm and 11pm. Partly cloudy, with a steady temperature around 71. South southwest wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
Patchy smoke after 1pm. Mostly sunny and hot, with a high near 95. South southwest wind 6 to 9 mph becoming northwest in the morning.
Saturday Night
Increasing clouds, with a low around 75. South southeast wind 8 to 10 mph becoming west southwest in the evening. Winds could gust as high as 20 mph.
Sunday
A slight chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 93. Heat index values as high as 98. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 72. South southeast wind around 8 mph becoming west northwest after midnight.
Monday
Sunny and hot, with a high near 92. North wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny and hot, with a high near 90. East wind 5 to 8 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 69. Northeast wind around 7 mph.
Wednesday
Sunny, with a high near 89.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 67. Chance of precipitation is 20%.
Friday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ortley SD
 45.33°N 97.21°W (Elev. 1847 ft)
Last Update:
9:36 pm CDT Jul 24, 2026
Forecast Valid:
9pm CDT Jul 24, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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