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 44%
Wind Speed S 7 mph
Barometer 30.00 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 20 Aug 1:15 pm CDT
Extended Forecast for

4 Miles SW Summitville TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. West southwest wind around 5 mph.

    High: 91 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 88 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 66. North wind around 5 mph becoming calm.

    Low: 66 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, sunny, with a high near 89. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 89 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. North wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 86 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. West southwest wind around 5 mph.
Tonight
Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 66. North wind around 5 mph becoming calm.
Saturday
Areas of fog before 9am. Otherwise, sunny, with a high near 89. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 62. North wind around 5 mph becoming calm.
Monday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 86. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Summitville TN
 35.5°N 86.01°W (Elev. 1099 ft)
Last Update:
1:31 pm CDT Aug 20, 2026
Forecast Valid:
1pm CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation