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

Hazardous Weather Conditions

Current conditions at

Columbia / Maury County (KMRC)

Lat: 35.55°NLon: 87.18°WElev: 676ft.

Fair

93°F

34°C

Humidity 41%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 20 Sep 5:55 pm CDT
Extended Forecast for

4 Miles NNW Williamsport TN

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

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming west southwest around 5 mph.

    High: 98 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Areas of fog after 11pm. Otherwise, partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    Showers and
    Areas 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 91. Heat index values as high as 97. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.

    High: 91 °F

    Slight Chance
    Showers and
    Areas Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 64. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph in the morning.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. Calm wind.
Monday
A 20 percent chance of showers after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming west southwest around 5 mph.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Areas of fog after 11pm. Otherwise, partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 40%.
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 91. Heat index values as high as 97. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.
Tuesday Night
A chance of thunderstorms before 7pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 64. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Williamsport TN
 35.7°N 87.26°W (Elev. 499 ft)
Last Update:
1:31 pm CDT Sep 20, 2026
Forecast Valid:
6pm CDT Sep 20, 2026-6pm CDT Sep 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