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

Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fair

63°F

17°C

Humidity 97%
Wind Speed Calm
Barometer 30.02 in (1017.2 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Aug 2:56 am CDT
Extended Forecast for

7 Miles WSW Hartington NE

  • Overnight

    Overnight: Clear, with a low around 61. Light south wind.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 21 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 67. South southeast wind around 15 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 88. Breezy, with a south wind 15 to 22 mph, with gusts as high as 29 mph.

    High: 88 °F

    Decreasing
    Clouds and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South southeast wind around 15 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 92. South wind around 14 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. South southeast wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 93. South wind 11 to 14 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South southeast wind around 11 mph, with gusts as high as 17 mph.

    Low: 72 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 61. Light south wind.
Wednesday
Sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 21 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 67. South southeast wind around 15 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 88. Breezy, with a south wind 15 to 22 mph, with gusts as high as 29 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South southeast wind around 15 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 92. South wind around 14 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 73. South southeast wind 11 to 13 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 93. South wind 11 to 14 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South southeast wind around 11 mph, with gusts as high as 17 mph.
Sunday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South wind 10 to 13 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. South southeast wind around 10 mph.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. South southeast wind 8 to 10 mph, with gusts as high as 16 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. East northeast wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 84. East northeast wind 7 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Hartington NE
 42.58°N 97.39°W (Elev. 1549 ft)
Last Update:
2:46 am CDT Aug 13, 2025
Forecast Valid:
3am CDT Aug 13, 2025-6pm CDT Aug 19, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation