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

75°F

24°C

Humidity 29%
Wind Speed SE 5 mph
Barometer 30.04 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 12 May 6:15 pm CDT
Extended Forecast for

3 Miles SSE Portland TN

  • Tonight

    Tonight: Mostly clear, with a low around 57. Light south wind becoming south southwest 5 to 10 mph after midnight.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 78. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 48. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 72. North wind 5 to 10 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. Calm wind becoming southeast around 5 mph.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. South wind around 10 mph.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Light south wind becoming south southwest 5 to 10 mph after midnight.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 78. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Clear, with a low around 48. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 72. North wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 49. Calm wind becoming southeast around 5 mph.
Friday
Mostly sunny, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 65. South wind around 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 66. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny, with a high near 93.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
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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:
6:26 pm CDT May 12, 2026
Forecast Valid:
6pm CDT May 12, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation