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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles N Cottontown TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. South wind around 10 mph.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 67. South southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 80. Southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 100%.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 63. Northeast wind around 5 mph.

    Low: 63 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. East northeast wind 5 to 10 mph becoming south southeast after midnight. Chance of precipitation is 70%.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 80. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 80 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 65. South wind around 10 mph. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. South wind around 10 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 67. South southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm. High near 80. Southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 100%.
Wednesday Night
A 50 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 63. Northeast wind around 5 mph.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. East northeast wind 5 to 10 mph becoming south southeast after midnight. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 80. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm. Low around 65. South wind around 10 mph. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Memorial Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Cottontown TN
 36.52°N 86.59°W (Elev. 801 ft)
Last Update:
6:12 pm CDT May 18, 2026
Forecast Valid:
1am CDT May 19, 2026-6pm CDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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