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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

86°F

30°C

Humidity 59%
Wind Speed Vrbl 3 mph
Barometer 29.82 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 17 Jun 3:50 pm CDT
Extended Forecast for

2 Miles ENE Chesterfield IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 82 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 64. Southwest wind 6 to 10 mph becoming northwest after midnight.

    Low: 64 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 82. Northwest wind around 6 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Calm wind becoming south around 5 mph after midnight.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

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

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind 5 to 9 mph. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 64. Southwest wind 6 to 10 mph becoming northwest after midnight.
Juneteenth
Sunny, with a high near 82. Northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 65. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Chesterfield IL
 39.28°N 90.03°W (Elev. 604 ft)
Last Update:
2:52 pm CDT Jun 17, 2025
Forecast Valid:
3pm CDT Jun 17, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation