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.

Overcast

68°F

20°C

Humidity 100%
Wind Speed N 5 mph
Barometer 29.85 in
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 3 Aug 4:35 am CDT
Extended Forecast for

3 Miles SSE Portland TN

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 84. North wind 5 to 10 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 64. North northeast wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. North northeast wind around 5 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 68. North wind around 5 mph becoming calm.

    Low: 68 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 88. Calm wind becoming west around 5 mph.

    High: 88 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Calm wind becoming south southeast around 5 mph.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Southwest wind around 5 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South southwest wind around 5 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 84. North wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 64. North northeast wind around 5 mph.
Tuesday
Sunny, with a high near 86. North northeast wind around 5 mph.
Tuesday Night
Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 68. North wind around 5 mph becoming calm.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 88. Calm wind becoming west around 5 mph.
Wednesday Night
Mostly clear, with a low around 70. Calm wind becoming south southeast around 5 mph.
Thursday
Sunny, with a high near 91. Southwest wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 72. South wind around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. South southwest wind around 5 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portland TN
 36.56°N 86.5°W (Elev. 801 ft)
Last Update:
1:31 am CDT Aug 3, 2026
Forecast Valid:
4am CDT Aug 3, 2026-6pm CDT Aug 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation