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

21°F

-6°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.47 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 12 Jan 1:35 am CST
Extended Forecast for

3 Miles SSE Portland TN

  • Overnight

    Overnight: Clear, with a low around 24. Calm wind.

    Low: 24 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 47. Calm wind becoming southwest around 5 mph in the morning.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. South southwest wind around 5 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 41. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 49. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 49 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 21. Northwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 30. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 18. Northwest wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 24. Calm wind.
Monday
Sunny, with a high near 47. Calm wind becoming southwest around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 31. South southwest wind around 5 mph.
Tuesday
Sunny, with a high near 57. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 41. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Showers. High near 49. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 21. Northwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 30. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 18. Northwest wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 15.
Sunday
Mostly sunny, with a high near 30.
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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:
12:31 am CST Jan 12, 2026
Forecast Valid:
1am CST Jan 12, 2026-6pm CST Jan 18, 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