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Hazardous Weather Conditions

Current conditions at

Tullahoma Regional Airport/William Northern Field (KTHA)

Lat: 35.38°NLon: 86.25°WElev: 1083ft.

Fair

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer NA
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Sep 2:55 am CDT
Extended Forecast for

8 Miles S Shelbyville TN

Heat Advisory September 19, 03:22am until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 19, 03:22am until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Overnight

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 102. Calm wind becoming northwest around 5 mph.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 71. Calm wind becoming south around 5 mph after midnight.

    Low: 71 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 96. Heat index values as high as 101. South wind around 5 mph becoming west in the afternoon.

    High: 96 °F

    Sunny

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind becoming south around 5 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind around 5 mph becoming west in the afternoon.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 66. South wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 89 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 71. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 102. Calm wind becoming northwest around 5 mph.
Saturday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 71. Calm wind becoming south around 5 mph after midnight.
Sunday
Sunny, with a high near 96. Heat index values as high as 101. South wind around 5 mph becoming west in the afternoon.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind becoming south around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind around 5 mph becoming west in the afternoon.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Patchy fog between midnight and 3am. Otherwise, mostly cloudy, with a low around 66. South wind around 5 mph becoming calm. Chance of precipitation is 60%.
Tuesday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers. Partly cloudy, with a low around 64. North wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 61.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles S Shelbyville TN
 35.37°N 86.46°W (Elev. 1001 ft)
Last Update:
1:31 am CDT Sep 19, 2026
Forecast Valid:
3am CDT Sep 19, 2026-6pm CDT Sep 25, 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