Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Tullahoma Regional Airport/William Northern Field (KTHA)

Lat: 35.38°NLon: 86.25°WElev: 1083ft.

Fair

72°F

22°C

Humidity 83%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Aug 8:55 pm CDT
Extended Forecast for

4 Miles NE Lynchburg TN

  • Tonight

    Tonight: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am.  Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly sunny, with a high near 90. Heat index values as high as 97. Southeast wind around 5 mph becoming southwest in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am.  Partly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 93. Calm wind.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am. Partly cloudy, with a low around 71. Calm wind.
Thursday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 90. Heat index values as high as 97. Southeast wind around 5 mph becoming southwest in the afternoon.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind.
Friday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 89. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Lynchburg TN
 35.34°N 86.32°W (Elev. 1099 ft)
8:50 pm CDT Aug 18, 2026
9pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
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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