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

Sparta Upper Cumberland Regional Airport (KSRB)

Lat: 36.06°NLon: 85.53°WElev: 1024ft.

Overcast

75°F

24°C

Humidity 89%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 10 Sep 8:15 am CDT
Extended Forecast for

Lancaster TN

  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 100. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 94 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Patchy fog between 3am and 4am. Otherwise, partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. Calm wind.

    High: 94 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Patchy fog between 10pm and 4am. Otherwise, mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 89. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 90%.

    High: 89 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms and
    Areas Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 91. Calm wind.

    High: 91 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Calm wind becoming south southwest around 5 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 100. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tonight
A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Patchy fog between 3am and 4am. Otherwise, partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. Calm wind.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Patchy fog between 10pm and 4am. Otherwise, mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.
Saturday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 89. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 90%.
Saturday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 91. Calm wind.
Sunday Night
Mostly clear, with a low around 65. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Calm wind becoming south southwest around 5 mph.
Monday Night
Mostly clear, with a low around 65.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster TN
 36.1°N 85.85°W (Elev. 617 ft)
Last Update:
6:06 am CDT Sep 10, 2026
Forecast Valid:
8am CDT Sep 10, 2026-6pm CDT Sep 16, 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