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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Portland TN

  • Tonight

    Tonight: Mostly clear, with a low around 34. East southeast wind around 5 mph.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62. South southwest wind around 5 mph becoming calm in the afternoon.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 68. Southwest wind 5 to 10 mph.

    High: 68 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after midnight. Cloudy, with a low around 41. West wind around 5 mph becoming north after midnight. Chance of precipitation is 60%.

    Low: 41 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers before noon. Partly sunny, with a high near 52. North wind around 5 mph.

    High: 52 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Northeast wind around 5 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 50. Northeast wind around 5 mph.

    High: 50 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 36. East northeast wind around 5 mph.

    Low: 36 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 34. East southeast wind around 5 mph.
Monday
Sunny, with a high near 62. South southwest wind around 5 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 42. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 68. Southwest wind 5 to 10 mph.
Tuesday Night
Showers likely, mainly after midnight. Cloudy, with a low around 41. West wind around 5 mph becoming north after midnight. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers before noon. Partly sunny, with a high near 52. North wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 32. Northeast wind around 5 mph.
Thursday
Mostly cloudy, with a high near 50. Northeast wind around 5 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 36. East northeast wind around 5 mph.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 50.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 35.
Saturday
A 40 percent chance of showers. Mostly sunny, with a high near 52.
Saturday Night
Showers likely. Cloudy, with a low around 40. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 50.
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:
6:06 pm CST Feb 8, 2026
Forecast Valid:
9pm CST Feb 8, 2026-6pm CST Feb 15, 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