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.

Fair

95°F

35°C

Humidity 44%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 18 Sep 12:55 pm CDT
Extended Forecast for

Harpersville AL

Heat Advisory September 19, 12:00pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 97. Calm wind becoming northeast around 5 mph.

    High: 97 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Increasing clouds and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming northeast around 5 mph.

    High: 99 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 97. Calm wind becoming northeast around 5 mph.
Tonight
Partly cloudy, with a low around 72. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Increasing clouds and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming northeast around 5 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 70. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind.
Sunday Night
Mostly clear, with a low around 69.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harpersville AL
 33.33°N 86.42°W
Last Update:
12:41 pm CDT Sep 18, 2026
Forecast Valid:
12pm CDT Sep 18, 2026-6pm CDT Sep 24, 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