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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

75°F

24°C

Humidity 83%
Wind Speed Calm
Barometer NA
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Sep 11:15 pm CDT
Extended Forecast for

2 Miles N Arnold AFB TN

Heat Advisory September 18, 11:28pm until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 11:28pm until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, sunny and hot, with a high near 97. Heat index values as high as 102. Calm wind.

    High: 97 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70. Calm wind becoming south around 5 mph.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Heat index values as high as 100. South southeast wind around 5 mph becoming west southwest in the afternoon.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southwest around 5 mph.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, sunny and hot, with a high near 97. Heat index values as high as 102. Calm wind.
Saturday Night
Mostly clear, with a low around 70. Calm wind becoming south around 5 mph.
Sunday
Sunny, with a high near 95. Heat index values as high as 100. South southeast wind around 5 mph becoming west southwest in the afternoon.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southwest around 5 mph.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 80.
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:
2 Miles N Arnold AFB TN
 35.39°N 86.15°W (Elev. 1063 ft)
Last Update:
11:11 pm CDT Sep 18, 2026
Forecast Valid:
11pm CDT Sep 18, 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