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/Mist

68°F

20°C

Humidity 88%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 64°F (18°C)
Visibility 3.00 mi
Last update 20 Sep 1:55 am CDT
Extended Forecast for

Chesterfield IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. South wind around 6 mph.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly sunny, with a high near 89. South wind 5 to 8 mph becoming west in the afternoon.

    High: 89 °F

    Chance
    T-storms then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. Light and variable wind.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 68. South wind around 6 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly sunny, with a high near 89. South wind 5 to 8 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 67. Light and variable wind.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 20%.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 74.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield IL
 39.26°N 90.06°W (Elev. 600 ft)
Last Update:
10:37 pm CDT Sep 19, 2024
Forecast Valid:
2am CDT Sep 20, 2024-6pm CDT Sep 26, 2024
 
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Additional Resources

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High Temperature

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Chance of Precipitation