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Hazardous Weather Conditions

Current conditions at

Columbia / Maury County (KMRC)

Lat: 35.55°NLon: 87.18°WElev: 676ft.

Fair

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Last update 19 Sep 5:55 am CDT
Extended Forecast for

Williamsport TN

Heat Advisory September 19, 06:13am until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 19, 06:13am until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Today

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming southwest around 5 mph.

    High: 98 °F

    Hot

  • Sunday Night

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

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. Calm wind becoming west around 5 mph.

    High: 97 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 90 °F

    Slight Chance
    Showers and
    Areas Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 100. Heat index values as high as 106. Calm wind.
Tonight
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 71. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. Calm wind becoming west around 5 mph.
Monday Night
A chance of showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 50%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
A 40 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 84. Calm wind becoming north northwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williamsport TN
 35.65°N 87.27°W (Elev. 568 ft)
Last Update:
5:12 am CDT Sep 19, 2026
Forecast Valid:
6am CDT Sep 19, 2026-6pm CDT Sep 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