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

Hazardous Weather Conditions

Current conditions at

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles W Portland TN

Heat Advisory September 17, 09:38am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 09:38am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 74. Calm wind.

    Low: 74 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. East wind around 5 mph becoming calm.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 96. Calm wind becoming west southwest around 5 mph.

    High: 96 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Calm wind becoming south around 5 mph after midnight.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. North northwest wind around 5 mph becoming south southeast after midnight.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 104. West southwest wind around 5 mph becoming north in the afternoon.
Tonight
Clear, with a low around 74. Calm wind.
Friday
Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. East wind around 5 mph becoming calm.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 96. Calm wind becoming west southwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 73. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 72. North northwest wind around 5 mph becoming south southeast after midnight.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind around 5 mph becoming west northwest in the afternoon.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Portland TN
 36.58°N 86.56°W (Elev. 791 ft)
Last Update:
6:21 am CDT Sep 17, 2026
Forecast Valid:
9am CDT Sep 17, 2026-6pm CDT Sep 23, 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