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

81°F

27°C

Humidity 79%
Wind Speed S 9 mph
Barometer 30.06 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 10 Sep 11:35 am CDT
Extended Forecast for

2 Miles S Portland TN

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 100. Southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 69. South southwest wind around 5 mph becoming calm. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind becoming south around 5 mph. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 88. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming west northwest around 5 mph.

    High: 90 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Calm wind becoming east around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. South wind around 5 mph.

    High: 92 °F

    Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 100. Southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 50 percent chance of showers and thunderstorms, mainly before 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 69. South southwest wind around 5 mph becoming calm. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind becoming south around 5 mph. Chance of precipitation is 50%.
Saturday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 88. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.
Saturday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 68. Calm wind.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming west northwest around 5 mph.
Sunday Night
Mostly clear, with a low around 67. Calm wind becoming east around 5 mph.
Monday
Sunny, with a high near 92. South wind around 5 mph.
Monday Night
Mostly clear, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers. Mostly clear, with a low around 68.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Portland TN
 36.56°N 86.5°W (Elev. 801 ft)
Last Update:
10:36 am CDT Sep 10, 2026
Forecast Valid:
11am CDT Sep 10, 2026-6pm CDT Sep 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation