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.

Overcast

64°F

18°C

Humidity 68%
Wind Speed SW 16 G 22 mph
Barometer 29.75 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 6 Jan 1:55 pm CST
Extended Forecast for

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 65. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Areas of fog after 2am. Otherwise, partly cloudy, with a low around 43. Southwest wind around 5 mph becoming calm after midnight.

    Low: 43 °F

    Partly Cloudy
    then Areas
    Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 60. Calm wind.

    High: 60 °F

    Areas Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 68. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, with thunderstorms also possible after 3am. Cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 65. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: Showers, with thunderstorms also possible after midnight. Low around 54. South southeast wind around 10 mph. Chance of precipitation is 80%.

    Low: 54 °F

    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 60. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 60 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 65. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 43. Southwest wind around 5 mph becoming calm after midnight.
Wednesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 60. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.
Thursday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 68. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Showers likely, with thunderstorms also possible after 3am. Cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 65. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday Night
Showers, with thunderstorms also possible after midnight. Low around 54. South southeast wind around 10 mph. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 60. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 45.
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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:
1:56 pm CST Jan 6, 2026
Forecast Valid:
2pm CST Jan 6, 2026-6pm CST Jan 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation