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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

13°C

56°F

Humidity 97%
Wind Speed Calm
Barometer 1003.6 mb (29.65 in)
Dewpoint 13°C (55°F)
Visibility 16 km
Last update 8 May 2:53 am CDT
Extended Forecast for

Collinsville IL

  • Overnight

    Overnight: Mostly clear, with a low around 15. Calm wind.

    Low: 15 °C

    Mostly Clear

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 27. Southeast wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 80%.

    High: 27 °C

    Slight Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 21 to 26 km/h becoming west 14 to 19 km/h after midnight. Winds could gust as high as 37 km/h. Chance of precipitation is 70%.

    Low: 16 °C

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 22. Breezy, with a west wind 18 to 23 km/h increasing to 27 to 32 km/h in the afternoon. Winds could gust as high as 48 km/h.

    High: 22 °C

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 11. North wind 11 to 21 km/h.

    Low: 11 °C

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 21.

    High: 21 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 12.

    Low: 12 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 22.

    High: 22 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 11.

    Low: 11 °C

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 15. Calm wind.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 27. Southeast wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 35 km/h. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 21 to 26 km/h becoming west 14 to 19 km/h after midnight. Winds could gust as high as 37 km/h. Chance of precipitation is 70%.
Thursday
Mostly sunny, with a high near 22. Breezy, with a west wind 18 to 23 km/h increasing to 27 to 32 km/h in the afternoon. Winds could gust as high as 48 km/h.
Thursday Night
Partly cloudy, with a low around 11. North wind 11 to 21 km/h.
Friday
Mostly sunny, with a high near 21.
Friday Night
Mostly clear, with a low around 12.
Saturday
Sunny, with a high near 22.
Saturday Night
Mostly clear, with a low around 11.
Sunday
Sunny, with a high near 26.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 14.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 27.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 16.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 27.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 m)
Last Update:
3:07 am CDT May 8, 2024
Forecast Valid:
3am CDT May 8, 2024-6pm CDT May 14, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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