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

37°F

3°C

Humidity 52%
Wind Speed SW 8 mph
Barometer 30.09 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 31 Dec 10:15 am CST
Extended Forecast for

3 Miles SSE Portland TN

  • Today

    Today: Mostly sunny, with a high near 45. West southwest wind 5 to 10 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. West wind around 5 mph.

    Low: 30 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 32. Calm wind.

    Low: 32 °F

    Increasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers after noon. Cloudy, with a high near 51. Calm wind becoming south southeast around 5 mph.

    High: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Cloudy, with a low around 37. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 37 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Partly sunny, with a high near 48. North northeast wind around 5 mph.

    High: 48 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. North wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 48. North wind around 5 mph.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 45. West southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 30. West wind around 5 mph.
New Year's Day
Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph.
Thursday Night
Increasing clouds, with a low around 32. Calm wind.
Friday
A 20 percent chance of showers after noon. Cloudy, with a high near 51. Calm wind becoming south southeast around 5 mph.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 37. Calm wind becoming north northeast around 5 mph after midnight.
Saturday
A 20 percent chance of showers before noon. Partly sunny, with a high near 48. North northeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 27. North wind around 5 mph.
Sunday
Mostly sunny, with a high near 48. North wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Partly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly cloudy, with a high near 58.
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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:
9:56 am CST Dec 31, 2025
Forecast Valid:
10am CST Dec 31, 2025-6pm CST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation