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

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Cloudy, with a steady temperature around 45. North wind around 10 mph.

    High: 45 °F

    Chance
    Showers

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind around 10 mph.

    Low: 26 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Mostly sunny, with a high near 35. Northwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. Light southwest wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 58 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Cloudy, with a steady temperature around 45. North wind around 10 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind around 10 mph.
Sunday
Mostly sunny, with a high near 35. Northwest wind 10 to 20 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 20. Northwest wind around 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 34. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 18. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
Mostly sunny, with a high near 47. Light southwest wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 40. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 58. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Thursday
Showers likely. Mostly cloudy, with a high near 56. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 32.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 37.
Saturday
A slight chance of showers. Mostly sunny, with a high near 63.
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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:
2:06 pm CST Feb 21, 2026
Forecast Valid:
5pm CST Feb 21, 2026-6pm CST Feb 28, 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