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

86°F

30°C

Humidity 49%
Wind Speed NE 6 mph
Barometer 30.02 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Jul 6:15 pm CDT
Extended Forecast for

Portland TN

  • Tonight

    Tonight: Mostly clear, with a low around 69. North wind around 5 mph becoming calm.

    Low: 69 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 90. Calm wind becoming east around 5 mph in the morning.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 70. Northeast wind around 5 mph becoming calm.

    Low: 70 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 92. Calm wind becoming south southeast around 5 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. Calm wind becoming west southwest around 5 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. West southwest wind around 5 mph becoming calm.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming west southwest around 5 mph in the morning.

    High: 90 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. West northwest wind around 5 mph becoming calm.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 69. North wind around 5 mph becoming calm.
Independence Day
Sunny, with a high near 90. Calm wind becoming east around 5 mph in the morning.
Friday Night
Clear, with a low around 70. Northeast wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 92. Calm wind becoming south southeast around 5 mph.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 91. Calm wind becoming west southwest around 5 mph.
Sunday Night
Mostly clear, with a low around 72. West southwest wind around 5 mph becoming calm.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming west southwest around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 73. West northwest wind around 5 mph becoming calm.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland TN
 36.58°N 86.53°W (Elev. 810 ft)
Last Update:
12:30 pm CDT Jul 3, 2025
Forecast Valid:
6pm CDT Jul 3, 2025-6pm CDT Jul 10, 2025
 
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