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

  • Today

    Today: Mostly sunny, with a high near 57. West wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 40. West northwest wind around 5 mph becoming northeast after midnight.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 51. North northwest wind 5 to 10 mph.

    High: 51 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind around 10 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 40. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 21. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 35. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. North northwest wind around 5 mph becoming calm in the evening.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 57. West wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
A 40 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 40. West northwest wind around 5 mph becoming northeast after midnight.
Saturday
Partly sunny, with a high near 51. North northwest wind 5 to 10 mph.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind around 10 mph.
Sunday
Sunny, with a high near 40. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 21. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 35. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 19. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 44. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 56.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 42.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 56.
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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:
4:16 am CST Feb 20, 2026
Forecast Valid:
5am CST Feb 20, 2026-6pm CST Feb 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation