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

25°F

-4°C

Humidity 69%
Wind Speed N 13 G 20 mph
Barometer 30.30 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 29 Dec 10:55 pm CST
Extended Forecast for

3 Miles SSE Portland TN

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Northwest wind around 10 mph.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 34. West northwest wind 5 to 10 mph.

    High: 34 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25. West southwest wind around 5 mph.

    Low: 25 °F

    Mostly Clear

  • Wednesday

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

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. West wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 46. West wind around 5 mph becoming north in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind becoming south around 5 mph after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers after noon. Mostly cloudy, with a high near 52. South wind around 5 mph.

    High: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Cloudy, with a low around 41. South southeast wind around 5 mph becoming north northeast after midnight.

    Low: 41 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Northwest wind around 10 mph.
Tuesday
Sunny, with a high near 34. West northwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 25. West southwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 45. West wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 27. West wind around 5 mph.
New Year's Day
Mostly sunny, with a high near 46. West wind around 5 mph becoming north in the afternoon.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind becoming south around 5 mph after midnight.
Friday
A 40 percent chance of showers after noon. Mostly cloudy, with a high near 52. South wind around 5 mph.
Friday Night
A 50 percent chance of showers. Cloudy, with a low around 41. South southeast wind around 5 mph becoming north northeast after midnight.
Saturday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 50.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 55.
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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:
3:11 pm CST Dec 29, 2025
Forecast Valid:
11pm CST Dec 29, 2025-6pm CST Jan 5, 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