Current conditions at

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

Fair

79°F

26°C

Humidity 79%
Wind Speed SW 5 mph
Barometer 30.09 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 16 Aug 3:35 am CDT
Extended Forecast for

4 Miles SSW Portland TN

Extreme Heat Warning August 16, 04:12am until August 16, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 16, 04:12am until August 16, 07:00pm

    NOW until 7:00pm Sun

    Extreme Heat Warning

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. West wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 91. Heat index values as high as 103. Light west northwest wind becoming northwest 5 to 10 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 70. North northwest wind 5 to 10 mph becoming light north  in the evening.

    Low: 70 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. North wind around 5 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 72. West southwest wind around 5 mph becoming east after midnight.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 106. West wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 75. West wind around 5 mph.
Monday
Mostly sunny, with a high near 91. Heat index values as high as 103. Light west northwest wind becoming northwest 5 to 10 mph in the afternoon.
Monday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. North northwest wind 5 to 10 mph becoming light north in the evening.
Tuesday
Sunny, with a high near 90. North wind around 5 mph.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 69. Calm wind.
Wednesday
Sunny, with a high near 93. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. West southwest wind around 5 mph becoming east after midnight.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. North northwest wind around 5 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Portland TN
 36.54°N 86.53°W (Elev. 814 ft)
1:31 am CDT Aug 16, 2026
4am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database