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 Downtown Airport (KDKX)

Lat: 35.97°NLon: 83.87°WElev: 827ft.

Overcast

79°F

26°C

Humidity 84%
Wind Speed SW 14 G 21 mph
Barometer 29.80 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 Jun 4:15 am EDT
Extended Forecast for

2 Miles ESE Mascot TN

  • Today

    Today: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Mostly cloudy, with a high near 88. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Breezy.
    Chance
    Showers then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely.  Mostly cloudy, with a low around 68. Southwest wind 5 to 10 mph becoming light  in the evening.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Juneteenth

    Juneteenth: A 30 percent chance of showers, mainly before 8am.  Mostly cloudy, then gradually becoming sunny, with a high near 85. Northwest wind around 5 mph.

    High: 85 °F

    Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. North wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Calm wind.

    High: 87 °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 before 8am, then a chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 88 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am.  Mostly cloudy, with a low around 71. Chance of precipitation is 70%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm.  High near 83. Breezy.  Chance of precipitation is 100%.

    High: 83 °F

    Showers and
    Breezy

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 88. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Southwest wind 5 to 10 mph becoming light in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 85. Northwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 87. Calm wind.
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 before 8am, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 83. Breezy. Chance of precipitation is 100%.
Monday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Tuesday Night
A slight chance of thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 10%.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Mascot TN
 36.06°N 83.74°W (Elev. 863 ft)
2:26 am EDT Jun 18, 2026
4am EDT Jun 18, 2026-6pm EDT Jun 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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