National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

Fair

59°F

15°C

Humidity 100%
Wind Speed S 8 mph
Barometer 30.04 in
Dewpoint 59°F (15°C)
Visibility 9.00 mi
Last update 11 Oct 11:15 pm CDT
Extended Forecast for

Portland TN

Dense Fog Advisory until October 12, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until October 12, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Tonight

    Low: 54 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Partly sunny, then gradually becoming sunny, with a high near 86. West southwest wind 5 to 10 mph.

    High: 86 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South southwest wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Southwest wind 5 to 10 mph.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63. South southwest wind around 5 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. South southwest wind around 5 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. South southwest wind around 5 mph becoming north northwest in the evening.

    Low: 65 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. East southeast wind around 5 mph becoming southwest in the afternoon.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 54. Calm wind.
Columbus Day
Partly sunny, then gradually becoming sunny, with a high near 86. West southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 60. South southwest wind around 5 mph.
Tuesday
Sunny, with a high near 88. Southwest wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 63. South southwest wind around 5 mph.
Wednesday
Sunny, with a high near 88. South southwest wind around 5 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. South southwest wind around 5 mph becoming north northwest in the evening.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. East southeast wind around 5 mph becoming southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 62. South wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland TN
 36.6°N 86.53°W (Elev. 801 ft)
Last Update:
9:52 pm CDT Oct 11, 2026
Forecast Valid:
11pm CDT Oct 11, 2026-6pm CDT Oct 18, 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