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.

Overcast

64°F

18°C

Humidity 94%
Wind Speed N 5 mph
Barometer 30.08 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 23 Jul 4:15 am CDT
Extended Forecast for

4 Miles SSE Portland TN

  • Today

    Today: Sunny, with a high near 82. North wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. North northeast wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 71. West southwest wind around 5 mph becoming calm.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. North wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 63. North northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Calm wind.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 71. West southwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 89. Calm wind becoming west northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 71. Calm wind.
Monday
Sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Portland TN
 36.54°N 86.51°W (Elev. 801 ft)
Last Update:
1:31 am CDT Jul 23, 2026
Forecast Valid:
4am CDT Jul 23, 2026-6pm CDT Jul 29, 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