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

Hazardous Weather Conditions

Current conditions at

St Clair County Airport (KPLR)

Lat: 33.56°NLon: 86.25°WElev: 485ft.

Overcast

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 7.00 mi
Last update 19 Aug 3:35 am CDT
Extended Forecast for

3 Miles ESE Harpersville AL

Heat Advisory August 19, 03:44am until August 19, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 03:44am until August 19, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • Overnight

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 96. Heat index values as high as 106. Calm wind.

    High: 96 °F

    Sunny

  • Wednesday Night

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

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Heat index values as high as 110. Calm wind becoming northwest around 5 mph.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

    High: 94 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 71. Calm wind.
Wednesday
Sunny, with a high near 96. Heat index values as high as 106. Calm wind.
Wednesday Night
Mostly clear, with a low around 73. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Heat index values as high as 110. Calm wind becoming northwest around 5 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 70.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 93.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 70.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Harpersville AL
 33.33°N 86.4°W
Last Update:
1:51 am CDT Aug 19, 2026
Forecast Valid:
3am CDT Aug 19, 2026-6pm CDT Aug 25, 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