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

54°F

12°C

Humidity 88%
Wind Speed NW 9 mph
Barometer 30.07 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 6 Nov 10:55 am CST
Extended Forecast for

Portland TN

  • Today

    Today: Mostly cloudy, with a high near 60. North northwest wind around 10 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 33. North wind 5 to 10 mph.

    Low: 33 °F

    Partly Cloudy
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 56. North wind around 5 mph.

    High: 56 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph becoming calm.

    Low: 30 °F

    Frost and
    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 8am. Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 60. Calm wind becoming west around 5 mph.

    High: 60 °F

    Frost and
    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, clear, with a low around 33. Calm wind.

    Low: 33 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 5 mph.

    High: 66 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. Calm wind becoming southwest around 5 mph.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 60. North northwest wind around 10 mph.
Tonight
Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 33. North wind 5 to 10 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 56. North wind around 5 mph.
Saturday Night
Patchy fog after 10pm. Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 30. North wind around 5 mph becoming calm.
Sunday
Areas of fog before 8am. Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 60. Calm wind becoming west around 5 mph.
Sunday Night
Patchy fog after 11pm. Otherwise, clear, with a low around 33. Calm wind.
Monday
Areas of fog before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Monday Night
Mostly clear, with a low around 36. Calm wind.
Tuesday
Sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Tuesday Night
Mostly clear, with a low around 38.
Veterans Day
Sunny, with a high near 65.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 40.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 62.
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 86.5°W (Elev. 833 ft)
Last Update:
10:46 am CST Nov 6, 2026
Forecast Valid:
11am CST Nov 6, 2026-6pm CST Nov 12, 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