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

70°F

21°C

Humidity 69%
Wind Speed Vrbl 5 G 13 mph
Barometer 29.76 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 15 Nov 8:35 pm CST
Extended Forecast for

Portland TN

  • Tonight

    Tonight: A slight chance of showers between 10pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 51. West southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 61. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34. North northwest wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Calm wind becoming east around 5 mph.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 45. Light east southeast wind becoming south southeast 5 to 10 mph in the evening. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 71. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 56. South southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 72. Southwest wind 5 to 10 mph.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 57. South wind around 5 mph.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 10pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 51. West southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 61. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 34. North northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 59. Calm wind becoming east around 5 mph.
Monday Night
A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 45. Light east southeast wind becoming south southeast 5 to 10 mph in the evening. Chance of precipitation is 50%.
Tuesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 71. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 56. South southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 72. Southwest wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57. South wind around 5 mph.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 71.
Thursday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Friday
Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland TN
 36.58°N 86.5°W (Elev. 833 ft)
Last Update:
7:01 pm CST Nov 15, 2025
Forecast Valid:
9pm CST Nov 15, 2025-6pm CST Nov 22, 2025
 
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