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

84°F

29°C

Humidity 66%
Wind Speed SE 5 mph
Barometer 30.24 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 16 Sep 6:55 pm CDT
Extended Forecast for

5 Miles NW Red Boiling Springs TN

Heat Advisory September 16, 07:24pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 07:24pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 101. Calm wind becoming west around 5 mph in the morning.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, sunny, with a high near 96. Calm wind.

    High: 96 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph after midnight.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 73. Calm wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 101. Calm wind becoming west around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 73. Calm wind.
Friday
Sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 70. Calm wind.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 96. Calm wind.
Saturday Night
Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 71. West southwest wind around 5 mph becoming southeast in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Red Boiling Springs TN
 36.59°N 85.92°W (Elev. 820 ft)
Last Update:
1:31 pm CDT Sep 16, 2026
Forecast Valid:
7pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation