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

Hazardous Weather Conditions

Current conditions at

Jackson, McKellar-Sipes Regional Airport (KMKL)

Lat: 35.59°NLon: 88.92°WElev: 433ft.

Fair

74°F

23°C

Humidity 88%
Wind Speed Calm
Barometer 30.06 in (1017.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Sep 10:53 pm CDT
Extended Forecast for

Mercer TN

Heat Advisory September 18, 11:27pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 11:27pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 72. Calm wind.

    Low: 72 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 97. Calm wind becoming west around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. North wind around 5 mph becoming calm.

    Low: 68 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. North wind 5 to 10 mph.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 72. Calm wind.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 72. Calm wind.
Sunday
Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 73. Calm wind.
Monday
Mostly sunny and hot, with a high near 97. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 89. North wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 60.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer TN
 35.48°N 89.07°W (Elev. 315 ft)
Last Update:
10:26 pm CDT Sep 18, 2026
Forecast Valid:
11pm CDT Sep 18, 2026-6pm CDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation