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

Hazardous Weather Conditions

Current conditions at

Sparta Upper Cumberland Regional Airport (KSRB)

Lat: 36.06°NLon: 85.53°WElev: 1024ft.

Fair

91°F

33°C

Humidity 56%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 19 Sep 12:35 pm CDT
Extended Forecast for

Smithville TN

Heat Advisory September 19, 12:47pm until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 19, 12:47pm until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 96 °F

    Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Mostly clear, with a low around 70. Calm wind becoming south southeast around 5 mph.

    Low: 70 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers after 4pm. Sunny, with a high near 95. Heat index values as high as 100. South wind around 5 mph becoming west in the afternoon.

    High: 95 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph.

    Low: 70 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind around 5 mph becoming northwest in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 102. Calm wind becoming northwest around 5 mph. Chance of precipitation is 30%.
Tonight
A 10 percent chance of showers before 7pm. Mostly clear, with a low around 70. Calm wind becoming south southeast around 5 mph.
Sunday
A 20 percent chance of showers after 4pm. Sunny, with a high near 95. Heat index values as high as 100. South wind around 5 mph becoming west in the afternoon.
Sunday Night
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind around 5 mph becoming northwest in the afternoon.
Monday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 40%.
Tuesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
Showers likely. Partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Smithville TN
 35.96°N 85.83°W (Elev. 1079 ft)
Last Update:
11:06 am CDT Sep 19, 2026
Forecast Valid:
12pm CDT Sep 19, 2026-6pm CDT Sep 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