National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

Partly Cloudy

73°F

23°C

Humidity 100%
Wind Speed N 6 mph
Barometer 29.95 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 27 Jul 12:55 am CDT
Extended Forecast for

7 Miles E Portland TN

Heat Advisory July 27, 10:00am until July 28, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming west around 5 mph.

    High: 92 °F

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms between 1pm and 2pm. Sunny, with a high near 92. Heat index values as high as 107. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 70. North northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 86. North wind 5 to 10 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. North wind around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. North wind around 5 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. North northeast wind around 5 mph becoming calm.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming west around 5 mph.
Monday Night
Mostly clear, with a low around 76. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
A chance of showers and thunderstorms between 1pm and 2pm. Sunny, with a high near 92. Heat index values as high as 107. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 70. North northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 86. North wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 66. North wind around 5 mph.
Thursday
Sunny, with a high near 86. North wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 66. North northeast wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles E Portland TN
 36.57°N 86.39°W (Elev. 876 ft)
Last Update:
11:46 pm CDT Jul 26, 2026
Forecast Valid:
1am CDT Jul 27, 2026-6pm CDT Aug 2, 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