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.

Fair

65°F

18°C

Humidity 97%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 5 Aug 2:55 am CDT
Extended Forecast for

Maryville IL

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Patchy Fog

  • Tuesday

    Tuesday: Isolated showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 85 °F

    Patchy Fog
    then Isolated
    T-storms

  • Tuesday Night

    Tuesday Night: Isolated showers and thunderstorms before 7pm, then isolated showers between 7pm and 8pm. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 67 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. Light southeast wind.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 65. Calm wind.
Tuesday
Isolated showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Isolated showers and thunderstorms before 7pm, then isolated showers between 7pm and 8pm. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 69. Light southeast wind.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 73.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
2:46 am CDT Aug 5, 2025
Forecast Valid:
3am CDT Aug 5, 2025-6pm CDT Aug 11, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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