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.

Fog/Mist

75°F

24°C

Humidity 94%
Wind Speed S 16 mph
Barometer 29.95 in
Dewpoint 73°F (23°C)
Visibility 5.00 mi
Last update 26 May 3:15 pm CDT
Extended Forecast for

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. South southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 66. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 81. West southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 65. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 81. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. Northeast wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Northeast wind around 5 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East northeast wind around 5 mph.

    Low: 63 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Northeast wind around 5 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. South southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 66. South wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 81. West southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 65. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Thursday
A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 81. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 64. Northeast wind around 5 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Northeast wind around 5 mph. Chance of precipitation is 30%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East northeast wind around 5 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Northeast wind around 5 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
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 May 26, 2026
Forecast Valid:
3pm CDT May 26, 2026-6pm CDT Jun 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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