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.

Fog/Mist

59°F

15°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.94 in
Dewpoint 59°F (15°C)
Visibility 6.00 mi
Last update 27 Dec 2:15 am CST
Extended Forecast for

3 Miles SSE Portland TN

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 70. Calm wind becoming south around 5 mph in the morning.

    High: 70 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 62. South wind 5 to 10 mph.

    Low: 62 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 31. South southwest wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%.

    Low: 31 °F

    Showers

  • Monday

    Monday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 35. West northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 35 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 33. Northwest wind 5 to 10 mph.

    High: 33 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22. Southwest wind 5 to 10 mph.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Saturday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 70. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 62. South wind 5 to 10 mph.
Sunday
A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Showers. Low around 31. South southwest wind 15 to 20 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 35. West northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 19. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 33. Northwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 22. Southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 27.
New Year's Day
Mostly sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 39.
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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:
12:31 am CST Dec 27, 2025
Forecast Valid:
2am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation