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

Columbia / Maury County (KMRC)

Lat: 35.55°NLon: 87.18°WElev: 676ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 18 Aug 9:10 pm CDT
Extended Forecast for

4 Miles E Williamsport TN

  • Tonight

    Tonight: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 94. Heat index values as high as 100. Calm wind.

    High: 94 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. Heat index values as high as 99. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    Showers and
    Areas Fog

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms and
    Areas Fog

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 67. Calm wind.
Wednesday
Increasing clouds, with a high near 94. Heat index values as high as 100. Calm wind.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. Heat index values as high as 99. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 50%.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 67. Calm wind.
Saturday
Sunny, with a high near 91. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 67. Calm wind.
Sunday
Sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Williamsport TN
 35.65°N 87.16°W (Elev. 699 ft)
Last Update:
6:46 pm CDT Aug 18, 2026
Forecast Valid:
9pm CDT Aug 18, 2026-6pm CDT Aug 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