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.

Partly Cloudy

52°F

11°C

Humidity 62%
Wind Speed SE 6 mph
Barometer 30.00 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 8 Jan 2:55 am CST
Extended Forecast for

3 Miles SSE Portland TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. South southeast wind around 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 67. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 4am. Mostly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 68. South southwest wind 10 to 15 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 3am, then showers and possibly a thunderstorm after 3am. Low around 55. South wind around 5 mph becoming northeast after midnight. Chance of precipitation is 90%.

    Low: 55 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before noon. Cloudy, with a high near 59. North northeast wind 5 to 15 mph becoming west in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 59 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. West wind around 10 mph.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 36. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22. Northwest wind 5 to 10 mph becoming west southwest after midnight.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. South southeast wind around 5 mph.
Thursday
Mostly cloudy, with a high near 67. South wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Showers likely, mainly after 4am. Mostly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and possibly a thunderstorm. High near 68. South southwest wind 10 to 15 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 3am, then showers and possibly a thunderstorm after 3am. Low around 55. South wind around 5 mph becoming northeast after midnight. Chance of precipitation is 90%.
Saturday
Showers likely, mainly before noon. Cloudy, with a high near 59. North northeast wind 5 to 15 mph becoming west in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Partly cloudy, with a low around 31. West wind around 10 mph.
Sunday
Mostly sunny, with a high near 36. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 22. Northwest wind 5 to 10 mph becoming west southwest after midnight.
Monday
Sunny, with a high near 42.
Monday Night
Clear, with a low around 29.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 47.
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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:
1:31 am CST Jan 8, 2026
Forecast Valid:
3am CST Jan 8, 2026-6pm CST Jan 14, 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