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.

Fog

70°F

21°C

Humidity 98%
Wind Speed S 3 mph
Barometer 29.87 in
Dewpoint 69°F (21°C)
Visibility 0.25 mi
Last update 17 Jun 4:55 am CDT
Extended Forecast for

2 Miles WNW Chesterfield IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 71. South wind around 7 mph.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms after 4pm. High near 82. Southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 82 °F

    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Low around 65. West wind 6 to 11 mph. Chance of precipitation is 80%.

    Low: 65 °F

    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 83. West wind around 6 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 71. South wind around 7 mph.
Wednesday
Showers and thunderstorms likely before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms after 4pm. High near 82. Southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Low around 65. West wind 6 to 11 mph. Chance of precipitation is 80%.
Juneteenth
Sunny, with a high near 83. West wind around 6 mph.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Chesterfield IL
 39.26°N 90.12°W (Elev. 551 ft)
Last Update:
4:52 am CDT Jun 17, 2025
Forecast Valid:
5am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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