Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

85°F

29°C

Humidity 51%
Wind Speed Vrbl 6 mph
Barometer 30.11 in (1018.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 9 Aug 3:53 pm EDT
Extended Forecast for

6 Miles NNW Tallassee TN

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Calm wind becoming southeast around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 4pm and 5pm.  Sunny, with a high near 89. East wind around 5 mph becoming calm.  Chance of precipitation is 10%.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 68. Southeast wind around 5 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 11am.  Partly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 50%.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am.  Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 67. Calm wind becoming southeast around 5 mph.
Sunday
A slight chance of showers and thunderstorms between 4pm and 5pm. Sunny, with a high near 89. East wind around 5 mph becoming calm. Chance of precipitation is 10%.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. Southeast wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 87. Calm wind becoming southwest around 5 mph. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Calm wind.
Wednesday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Tallassee TN
 35.65°N 83.97°W (Elev. 1050 ft)
1:38 pm EDT Aug 9, 2025
4pm EDT Aug 9, 2025-6pm EDT Aug 16, 2025
 
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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