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

41°F

5°C

Humidity 93%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 9 Nov 12:55 am CST
Extended Forecast for

Portland TN

  • Overnight

    Overnight: Patchy frost after 5am. Otherwise, clear, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Frost

  • Monday

    Monday: Patchy frost before 7am. Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Patchy Frost
    then Sunny

  • Monday Night

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

    Low: 39 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming west southwest around 5 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 9pm and 5am. Otherwise, mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 68. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 44. South wind 5 to 15 mph becoming west northwest after midnight. Chance of precipitation is 80%.

    Low: 44 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 55. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 55 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 33. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Patchy frost after 5am. Otherwise, clear, with a low around 35. Calm wind.
Monday
Patchy frost before 7am. Otherwise, sunny, with a high near 66. Calm wind.
Monday Night
Clear, with a low around 39. Calm wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming west southwest around 5 mph.
Tuesday Night
Patchy fog between 9pm and 5am. Otherwise, mostly clear, with a low around 39. Calm wind.
Veterans Day
Mostly sunny, with a high near 68. Light south wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Showers and possibly a thunderstorm. Low around 44. South wind 5 to 15 mph becoming west northwest after midnight. Chance of precipitation is 80%.
Thursday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 55. Northwest wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 33. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 49.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 55.
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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:
12:31 am CST Nov 9, 2026
Forecast Valid:
1am CST Nov 9, 2026-6pm CST Nov 15, 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