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

77°F

25°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.10 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Aug 3:35 am CDT
Extended Forecast for

Cross Plains TN

Extreme Heat Warning August 15, 03:59am until August 16, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 15, 03:59am until August 16, 07:00pm

    NOW until 7:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 106. West wind around 5 mph.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Calm wind becoming southwest around 5 mph after midnight.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 107. West wind 5 to 10 mph.

    High: 97 °F

    Hot

  • Sunday Night

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

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Northwest wind 5 to 10 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. North northwest wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 90 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Calm wind.
Saturday
Sunny, with a high near 96. Heat index values as high as 106. West wind around 5 mph.
Saturday Night
Mostly clear, with a low around 75. Calm wind becoming southwest around 5 mph after midnight.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 107. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 76. West wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Northwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 71. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 90. Calm wind becoming north northwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 71. Calm wind.
Wednesday
Sunny, with a high near 95.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cross Plains TN
 36.54°N 86.67°W (Elev. 709 ft)
Last Update:
1:31 am CDT Aug 15, 2026
Forecast Valid:
3am CDT Aug 15, 2026-6pm CDT Aug 21, 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