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

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 23 May 9:15 pm CDT
Extended Forecast for

4 Miles ESE Cottontown TN

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Areas Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 81. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers after 1am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers and
    Patchy Fog

  • Memorial Day

    Memorial Day: Showers, with thunderstorms also possible after 1pm. Patchy fog before 10am. High near 79. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 80%.

    High: 79 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 64. East wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 81. South wind around 5 mph. Chance of precipitation is 90%.

    High: 81 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. South southwest wind around 5 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 10 percent chance of showers after 5am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 81. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers after 1am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%.
Memorial Day
Showers, with thunderstorms also possible after 1pm. Patchy fog before 10am. High near 79. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 64. East wind around 5 mph becoming calm. Chance of precipitation is 80%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 81. South wind around 5 mph. Chance of precipitation is 90%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. South southwest wind around 5 mph. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Cottontown TN
 36.47°N 86.54°W (Elev. 692 ft)
Last Update:
1:31 pm CDT May 23, 2026
Forecast Valid:
9pm CDT May 23, 2026-6pm CDT May 30, 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