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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Muscle Shoals, North West Alabama Regional Airport (KMSL)

Lat: 34.74°NLon: 87.6°WElev: 548ft.

Fair

71°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 30.27 in (1024.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 17 Sep 4:53 am CDT
Extended Forecast for

4 Miles WSW Underwood-Petersville AL

Heat Advisory September 17, 05:35am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 05:35am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 99 °F

    Hot

  • Tonight

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

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming north around 5 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 107. Calm wind.
Tonight
Mostly clear, with a low around 73. Calm wind.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming north around 5 mph.
Friday Night
Mostly clear, with a low around 72. Calm wind.
Saturday
Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny and hot, with a high near 98.
Sunday Night
Mostly clear, with a low around 71.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 68.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Underwood-Petersville AL
 34.84°N 87.76°W (Elev. 558 ft)
Last Update:
4:50 am CDT Sep 17, 2026
Forecast Valid:
5am CDT Sep 17, 2026-6pm CDT Sep 23, 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