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

4 Miles NW Lafayette TN

Heat Advisory September 17, 03:30pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 03:30pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 73. Calm wind.

    Low: 73 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 102. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Friday Night

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

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming west around 5 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.

    Low: 72 °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. Calm wind becoming south around 5 mph after midnight.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 98. Heat index values as high as 101. North wind around 5 mph becoming calm.
Tonight
Clear, with a low around 73. Calm wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 102. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming west around 5 mph.
Saturday Night
Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.
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. Calm wind becoming south around 5 mph after midnight.
Monday
Mostly sunny, with a high near 95. South wind around 5 mph becoming northwest in the afternoon.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Lafayette TN
 36.56°N 86.09°W (Elev. 801 ft)
Last Update:
2:36 pm CDT Sep 17, 2026
Forecast Valid:
3pm 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