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 39. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62. Northeast wind around 5 mph becoming calm.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog between 10pm and 2am. Otherwise, partly cloudy, with a low around 43. Calm wind becoming south around 5 mph in the evening.

    Low: 43 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 57. South wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 67. Southwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 67 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 56. South southwest wind 5 to 10 mph.

    Low: 56 °F

    Cloudy then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 74. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 54. South wind around 10 mph.

    Low: 54 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Washington's Birthday
Mostly sunny, with a high near 62. Northeast wind around 5 mph becoming calm.
Monday Night
Patchy fog between 10pm and 2am. Otherwise, partly cloudy, with a low around 43. Calm wind becoming south around 5 mph in the evening.
Tuesday
Mostly cloudy, with a high near 65. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Cloudy, with a low around 57. South wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 67. Southwest wind 10 to 20 mph, with gusts as high as 25 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 56. South southwest wind 5 to 10 mph.
Thursday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 74. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54. South wind around 10 mph.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Saturday
A 40 percent chance of showers. Mostly sunny, with a high near 56.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 35.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 50.
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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:
2:52 pm CST Feb 15, 2026
Forecast Valid:
5pm CST Feb 15, 2026-6pm CST Feb 22, 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