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.

A Few Clouds

81°F

27°C

Humidity 42%
Wind Speed SW 10 G 16 mph
Barometer 29.96 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 16 Apr 5:15 pm CDT
Extended Forecast for

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79. West wind around 10 mph.

    High: 79 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the morning.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. South wind 5 to 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. North northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely

  • Sunday

    Sunday: Sunny, with a high near 64. North northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41. Northwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 69. East northeast wind around 5 mph becoming northwest in the afternoon.

    High: 69 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79. West wind around 10 mph.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 68. South wind 5 to 10 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 43. North northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday
Sunny, with a high near 64. North northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 41. Northwest wind 5 to 10 mph becoming northeast after midnight.
Monday
Sunny, with a high near 69. East northeast wind around 5 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 80.
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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:
1:31 pm CDT Apr 16, 2026
Forecast Valid:
5pm CDT Apr 16, 2026-6pm CDT Apr 23, 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