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

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 5 Aug 12:35 am CDT
Extended Forecast for

Williamsport TN

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Heat index values as high as 97. Calm wind.

    High: 90 °F

    Patchy Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before midnight, then patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, sunny, with a high near 93. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph.

    High: 93 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 93. Calm wind becoming south around 5 mph.

    High: 93 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Calm wind.

    High: 92 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 69. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Heat index values as high as 97. Calm wind.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before midnight, then patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 93. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph.
Thursday Night
Partly cloudy, with a low around 72. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 93. Calm wind becoming south around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Calm wind.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Calm wind.
Saturday Night
Partly cloudy, with a low around 71. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 73.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsport TN
 35.63°N 87.24°W (Elev. 705 ft)
Last Update:
11:11 pm CDT Aug 4, 2026
Forecast Valid:
12am CDT Aug 5, 2026-6pm CDT Aug 11, 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