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.

Fair

84°F

29°C

Humidity 58%
Wind Speed SW 8 G 16 mph
Barometer 30.03 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 May 3:55 pm CDT
Extended Forecast for

3 Miles SSE Portland TN

  • This Afternoon

    This Afternoon: A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. South southwest wind around 10 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. South wind around 10 mph.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 71. South wind around 10 mph.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 84. South southwest wind around 5 mph. Chance of precipitation is 90%.

    High: 84 °F

    Showers

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. South southwest wind around 10 mph.
Tonight
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 90. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 68. South wind around 10 mph.
Monday
Mostly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 71. South wind around 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm. High near 84. South southwest wind around 5 mph. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 59.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 78.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 62.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portland TN
 36.56°N 86.5°W (Elev. 801 ft)
Last Update:
2:21 pm CDT May 16, 2026
Forecast Valid:
4pm CDT May 16, 2026-6pm CDT May 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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