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

79°F

26°C

Humidity 74%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 24 May 3:55 pm CDT
Extended Forecast for

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. West wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms and
    Patchy Fog

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 9am, then a chance of showers and thunderstorms after 9am. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 77. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 64. East northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 80. Calm wind becoming south around 5 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. South wind around 5 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 10am. High near 81. South southwest wind around 5 mph. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.

    High: 83 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. West wind around 5 mph. 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 chance of showers and thunderstorms after 4am. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.
Memorial Day
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 9am, then a chance of showers and thunderstorms after 9am. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 77. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 64. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Showers and possibly a thunderstorm. High near 80. Calm wind becoming south around 5 mph. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. South wind around 5 mph. Chance of precipitation is 60%.
Wednesday
Showers, with thunderstorms also possible after 10am. High near 81. South southwest wind around 5 mph. Chance of precipitation is 80%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. Calm wind.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 66.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
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 24, 2026
Forecast Valid:
4pm CDT May 24, 2026-6pm CDT May 31, 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