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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

2 Miles NNW Greenbrier TN

Heat Advisory September 17, 01:30pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 01:30pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 105. 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. North wind around 5 mph becoming calm.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 97. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Saturday Night

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

    Low: 73 °F

    Mostly Clear

  • Sunday

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

    High: 97 °F

    Hot

  • Sunday Night

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

    Low: 72 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 98. Heat index values as high as 105. North wind around 5 mph.
Tonight
Mostly clear, with a low around 74. Calm wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 105. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72. North wind around 5 mph becoming calm.
Saturday
Sunny and hot, with a high near 97. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly sunny and hot, with a high near 97. South wind around 5 mph becoming west in the afternoon.
Sunday Night
Mostly clear, 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 southwest wind around 5 mph becoming 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 40 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 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Greenbrier TN
 36.46°N 86.82°W (Elev. 755 ft)
Last Update:
6:21 am CDT Sep 17, 2026
Forecast Valid:
1pm CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation