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

75°F

24°C

Humidity 100%
Wind Speed S 5 mph
Barometer 30.12 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 15 Aug 5:55 am CDT
Extended Forecast for

6 Miles WNW Lafayette TN

Heat Advisory August 15, 06:11am until August 16, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 15, 06:11am until August 16, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Today

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. Calm wind becoming south southwest around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 105. West wind around 5 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. West wind around 5 mph becoming calm.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the morning.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 70. North northwest wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90. Calm wind becoming north northwest around 5 mph.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 95. Heat index values as high as 104. Calm wind becoming west southwest around 5 mph in the morning.
Tonight
Mostly clear, with a low around 74. Calm wind becoming south southwest around 5 mph.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 105. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 75. West wind around 5 mph becoming calm.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the morning.
Monday Night
Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 70. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 90. Calm wind becoming north northwest around 5 mph.
Tuesday Night
Mostly clear, with a low around 69. Calm wind.
Wednesday
Mostly sunny, with a high near 94. Southwest wind around 5 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Lafayette TN
 36.56°N 86.11°W (Elev. 899 ft)
Last Update:
1:31 am CDT Aug 15, 2026
Forecast Valid:
6am CDT Aug 15, 2026-6pm CDT Aug 21, 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