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.

Fair

88°F

31°C

Humidity 66%
Wind Speed SW 3 mph
Barometer 30.09 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 15 Aug 7:55 pm CDT
Extended Forecast for

White House TN

Extreme Heat Warning August 15, 08:36pm until August 16, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 15, 08:36pm until August 16, 07:00pm

    NOW until 7:00pm Sun

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 106. West wind 5 to 10 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. West southwest wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Heat index values as high as 103. Northwest wind 5 to 10 mph.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. North wind 5 to 10 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. North wind around 5 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. North northeast wind around 5 mph becoming calm.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. South southeast wind 5 to 10 mph becoming west southwest in the afternoon.

    High: 93 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 74. Calm wind becoming southwest around 5 mph.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 106. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 76. West southwest wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Heat index values as high as 103. Northwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 70. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 90. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 69. North northeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 93. South southeast wind 5 to 10 mph becoming west southwest in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. West wind around 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
White House TN
 36.45°N 86.68°W (Elev. 869 ft)
Last Update:
6:41 pm CDT Aug 15, 2026
Forecast Valid:
8pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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