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

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 19 Aug 1:55 am CDT
Extended Forecast for

5 Miles E Lynchburg TN

  • Overnight

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

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 98. Calm wind.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, with thunderstorms also possible after 4am.  Partly cloudy, with a low around 72. Calm wind.  Chance of precipitation is 30%.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 91. Heat index values as high as 100. Calm wind becoming north northeast around 5 mph.  Chance of precipitation is 50%.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70. Calm wind.  Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 94. Heat index values as high as 98. Calm wind.
Wednesday Night
A chance of showers, with thunderstorms also possible after 4am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Calm wind becoming north northeast around 5 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 89.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Lynchburg TN
 35.29°N 86.27°W (Elev. 899 ft)
1:50 am CDT Aug 19, 2026
2am CDT Aug 19, 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