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

45°F

7°C

Humidity 100%
Wind Speed S 6 mph
Barometer 30.25 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 21 Apr 1:15 am CDT
Extended Forecast for

3 Miles SSE Portland TN

  • Overnight

    Overnight: Clear, with a low around 48. Calm wind becoming south around 5 mph.

    Low: 48 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. Southwest wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. West southwest wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. West southwest wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. South southwest wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 80 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 90%.

    Low: 62 °F

    Showers
    Likely then
    Showers

Detailed Forecast

Overnight
Clear, with a low around 48. Calm wind becoming south around 5 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 54. Southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 79. West southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 55. West southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 80. South southwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 61. South 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 80. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday Night
Showers and possibly a thunderstorm. Low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 90%.
Saturday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 59.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. Chance of precipitation is 60%.
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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 am CDT Apr 21, 2026
Forecast Valid:
1am CDT Apr 21, 2026-6pm CDT Apr 27, 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