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

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

Overcast

66°F

19°C

Humidity 94%
Wind Speed NW 14 G 21 mph
Barometer 30.02 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 16 Oct 8:15 am CDT
Extended Forecast for

Portland TN

  • Today

    Today: A slight chance of rain between noon and 1pm. Cloudy, with a temperature falling to around 56 by 5pm. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 64 °F⇓

    Cloudy then
    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37. East northeast wind around 5 mph.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65. East southeast wind around 5 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 72 °F

    Sunny

Detailed Forecast

Today
A slight chance of rain between noon and 1pm. Cloudy, with a temperature falling to around 56 by 5pm. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 44. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 58. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 37. East northeast wind around 5 mph.
Sunday
Sunny, with a high near 65. East southeast wind around 5 mph.
Sunday Night
Clear, with a low around 40. Calm wind.
Monday
Sunny, with a high near 68. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 72. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Clear, with a low around 45.
Thursday
Sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland TN
 36.58°N 86.53°W (Elev. 810 ft)
Last Update:
5:16 am CDT Oct 16, 2026
Forecast Valid:
8am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation