National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Tullahoma Regional Airport/William Northern Field (KTHA)

Lat: 35.38°NLon: 86.25°WElev: 1083ft.

Fair

91°F

33°C

Humidity 41%
Wind Speed N 13 mph
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 19 Aug 2:15 pm CDT
Extended Forecast for

2 Miles NNE Arnold AFB TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 93. Heat index values as high as 97. Calm wind.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 98. Northeast wind around 5 mph becoming southwest in the morning. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers and
    Areas Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 90 °F

    Areas Fog
    then Sunny

  • Saturday Night

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

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 93. Heat index values as high as 97. Calm wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph.
Thursday
A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 98. Northeast wind around 5 mph becoming southwest in the morning. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69. Calm wind. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 10am. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 67. Calm wind.
Saturday
Areas of fog before 9am. Otherwise, sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66. Calm wind.
Sunday
Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 66.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Arnold AFB TN
 35.39°N 86.13°W (Elev. 1047 ft)
Last Update:
1:31 pm CDT Aug 19, 2026
Forecast Valid:
2pm CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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