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.

Mostly Cloudy

37°F

3°C

Humidity 45%
Wind Speed W 13 G 22 mph
Barometer 30.12 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 17 Jan 4:15 pm CST
Extended Forecast for

4 Miles SW Portland TN

  • This Afternoon

    This Afternoon: A chance of sprinkles before 5pm. Mostly cloudy, with a high near 39. West wind around 10 mph.

    High: 39 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 15. West northwest wind 5 to 10 mph.

    Low: 15 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 32. West northwest wind 5 to 10 mph becoming south southwest in the afternoon.

    High: 32 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. South southwest wind 5 to 10 mph becoming west after midnight.

    Low: 21 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 29. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Northwest wind around 5 mph becoming calm in the evening.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 33. Calm wind becoming south southwest around 5 mph in the morning.

    High: 33 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 22. South wind 5 to 15 mph.

    Low: 22 °F

    Clear

  • Wednesday

    Wednesday: A chance of sprinkles after noon. Mostly sunny, with a high near 44. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 44 °F

    Chance
    Sprinkles

Detailed Forecast

This Afternoon
A chance of sprinkles before 5pm. Mostly cloudy, with a high near 39. West wind around 10 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 15. West northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 32. West northwest wind 5 to 10 mph becoming south southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 21. South southwest wind 5 to 10 mph becoming west after midnight.
M.L.King Day
Mostly sunny, with a high near 29. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 11. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 33. Calm wind becoming south southwest around 5 mph in the morning.
Tuesday Night
Clear, with a low around 22. South wind 5 to 15 mph.
Wednesday
A chance of sprinkles after noon. Mostly sunny, with a high near 44. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Mostly clear, with a low around 23.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 45.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 34.
Saturday
A chance of showers. Mostly cloudy, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Portland TN
 36.54°N 86.56°W (Elev. 804 ft)
Last Update:
12:31 pm CST Jan 17, 2026
Forecast Valid:
4pm CST Jan 17, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation