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.

Partly Cloudy

84°F

29°C

Humidity 58%
Wind Speed SW 6 G 13 mph
Barometer 29.94 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 21 Jun 1:35 pm CDT
Extended Forecast for

Williamsport TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 90. South southwest wind 5 to 10 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. South wind around 5 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: Showers and possibly a thunderstorm before 3pm, then showers and thunderstorms likely, mainly between 3pm and 5pm. High near 84. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers then
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 3am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 66. West wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms and
    Patchy Fog

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming north around 5 mph in the afternoon.

    High: 84 °F

    Slight Chance
    Showers and
    Areas Fog

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Areas of fog before 8am. Otherwise, sunny, with a high near 87. Calm wind.

    High: 87 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 90. South southwest wind 5 to 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. South wind around 5 mph, with gusts as high as 20 mph.
Monday
Showers and possibly a thunderstorm before 3pm, then showers and thunderstorms likely, mainly between 3pm and 5pm. High near 84. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 3am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 66. West wind around 5 mph becoming calm. Chance of precipitation is 40%.
Tuesday
A 20 percent chance of showers before 1pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Areas of fog before 8am. Otherwise, sunny, with a high near 87. Calm wind.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsport TN
 35.65°N 87.24°W (Elev. 577 ft)
Last Update:
1:31 pm CDT Jun 21, 2026
Forecast Valid:
2pm CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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