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

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 56. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly after 7pm. Low around 45. South wind around 5 mph becoming east northeast in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 57. North northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 40. North wind around 5 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 60. North northeast wind around 5 mph becoming calm.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 39. Calm wind.

    Low: 39 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 68. Calm wind becoming south around 5 mph.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. South wind around 5 mph becoming north northwest after midnight.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. South southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday
A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 56. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Showers, mainly after 7pm. Low around 45. South wind around 5 mph becoming east northeast in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers likely. Mostly cloudy, with a high near 57. North northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 40. North wind around 5 mph.
Friday
Sunny, with a high near 60. North northeast wind around 5 mph becoming calm.
Friday Night
Clear, with a low around 39. Calm wind.
Saturday
Sunny, with a high near 68. Calm wind becoming south around 5 mph.
Saturday Night
Mostly clear, with a low around 43. South wind around 5 mph becoming north northwest after midnight.
Sunday
Partly sunny, with a high near 62.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 42.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 46.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly 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:
6:21 pm CST Feb 24, 2026
Forecast Valid:
10pm CST Feb 24, 2026-6pm CST Mar 3, 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