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 SSE Portland TN

  • Overnight

    Overnight: Showers and thunderstorms likely. Mostly cloudy, with a low around 57. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 49. South southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 60. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 40. West northwest wind around 5 mph becoming northeast after midnight.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 56. North wind around 5 mph.

    High: 56 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 29. Northwest wind 5 to 10 mph.

    Low: 29 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 40. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 40 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 49. South southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 60. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 40. West northwest wind around 5 mph becoming northeast after midnight.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 56. North wind around 5 mph.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 29. Northwest wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 40. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 24. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 54.
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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:
12:31 am CST Feb 19, 2026
Forecast Valid:
1am CST Feb 19, 2026-6pm CST Feb 25, 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