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

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.

Overcast and Breezy

78°F

26°C

Humidity 74%
Wind Speed SW 23 G 33 mph
Barometer 29.82 in (1008.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jun 2:53 am EDT
Extended Forecast for

3 Miles N Tallassee TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 73. Southwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 85. Southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms then
    Showers

  • Thursday Night

    Thursday Night: 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 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Northwest wind around 5 mph becoming calm.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    T-storms
    Likely then
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 73. Southwest wind around 10 mph, with gusts as high as 25 mph.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 85. Southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
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 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 63. Northwest wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 67. Calm wind.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 71. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
A chance of thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Tallassee TN
 35.6°N 83.95°W (Elev. 1581 ft)
Last Update:
2:26 am EDT Jun 18, 2026
Forecast Valid:
3am EDT Jun 18, 2026-6pm EDT Jun 24, 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