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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

74°F

23°C

Humidity 94%
Wind Speed SE 3 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 12 Jul 11:53 pm CDT
Extended Forecast for

Collinsville IL

  • Overnight

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

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 87. Light and variable wind.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. Light southwest wind.

    Low: 71 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 87. Light and variable wind.
Sunday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. Light southwest wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 ft)
Last Update:
10:52 pm CDT Jul 12, 2025
Forecast Valid:
12am CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
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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