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.

Fair

46°F

8°C

Humidity 62%
Wind Speed S 3 mph
Barometer 30.02 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 1 Jan 9:55 am CST
Extended Forecast for

3 Miles SSE Portland TN

  • New Year's Day

    New Year's Day: Sunny, with a high near 53. South wind around 5 mph becoming west southwest in the afternoon.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. Calm wind.

    Low: 35 °F

    Increasing
    Clouds

  • Friday

    Friday: Showers likely, mainly after 5pm. Cloudy, with a high near 51. Calm wind becoming southeast around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers. Low around 39. Light east northeast wind becoming north northeast 5 to 10 mph in the evening. Chance of precipitation is 80%.

    Low: 39 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before noon. Mostly cloudy, with a high near 45. North wind 5 to 10 mph.

    High: 45 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. North wind around 5 mph.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 44. North wind around 5 mph becoming calm.

    High: 44 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 55 °F

    Sunny

Detailed Forecast

New Year's Day
Sunny, with a high near 53. South wind around 5 mph becoming west southwest in the afternoon.
Tonight
Increasing clouds, with a low around 35. Calm wind.
Friday
Showers likely, mainly after 5pm. Cloudy, with a high near 51. Calm wind becoming southeast around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers. Low around 39. Light east northeast wind becoming north northeast 5 to 10 mph in the evening. Chance of precipitation is 80%.
Saturday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 45. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 26. North wind around 5 mph.
Sunday
Sunny, with a high near 44. North wind around 5 mph becoming calm.
Sunday Night
Mostly cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 55. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 60.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 50.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portland TN
 36.56°N 86.5°W (Elev. 801 ft)
Last Update:
5:16 am CST Jan 1, 2026
Forecast Valid:
10am CST Jan 1, 2026-6pm CST Jan 7, 2026
 
Forecast Discussion
 
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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