Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

78°F

26°C

Humidity 76%
Wind Speed SW 14 G 25 mph
Barometer 29.82 in (1008.4 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jun 5:53 am EDT
Extended Forecast for

4 Miles ENE Tallassee TN

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 83. Southwest wind 10 to 15 mph, with gusts as high as 35 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms then
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 68. South wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: Showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm.  High near 81. Northwest wind around 5 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am.  Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 70%.

    High: 84 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and possibly a thunderstorm after 2am.  Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm.  High near 78. Chance of precipitation is 100%.

    High: 78 °F

    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 83. Southwest wind 10 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. High near 81. Northwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 66. Calm wind.
Sunday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 69. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 67. Chance of precipitation is 80%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Tuesday Night
A chance of thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Tallassee TN
 35.57°N 83.87°W (Elev. 2083 ft)
2:26 am EDT Jun 18, 2026
6am EDT Jun 18, 2026-6pm EDT Jun 24, 2026
 
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Additional Resources

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