Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

76°F

24°C

Humidity 62%
Wind Speed S 16 G 29 mph
Barometer 29.52 in (999.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 2 Apr 9:53 am CDT
Extended Forecast for

Collinsville IL

Tornado Watch until April 2, 04:00pm
Wind Advisory April 2, 12:00pm until April 2, 07:00pm
Click here for hazard details and duration
Tornado Watch
Wind Advisory
  •  
    Tornado Watch until April 2, 04:00pm

    NOW until 4:00pm Wed

    Tornado Watch

  • Today

    High: 76 °F

    Breezy.
    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm.  Cloudy during the early evening, then gradual clearing, with a low around 52. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 60%.

    Low: 52 °F

    T-storms
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm.  Increasing clouds, with a high near 63. Calm wind becoming northeast 5 to 9 mph in the morning.  Chance of precipitation is 40%.

    High: 63 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am.  Cloudy, with a low around 51. Northeast wind 6 to 10 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 1pm.  High near 63. East wind 8 to 10 mph.  Chance of precipitation is 100%.

    High: 63 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Low around 53. Chance of precipitation is 100%.

    Low: 53 °F

    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm.  High near 59. Chance of precipitation is 100%.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers.  Low around 43. Chance of precipitation is 80%.

    Low: 43 °F

    Showers

Detailed Forecast

Today
Showers and thunderstorms. High near 76. Breezy, with a south wind around 26 mph, with gusts as high as 47 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 52. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Increasing clouds, with a high near 63. Calm wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 40%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Cloudy, with a low around 51. Northeast wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Friday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 63. East wind 8 to 10 mph. Chance of precipitation is 100%.
Friday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 53. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm. High near 59. Chance of precipitation is 100%.
Saturday Night
Showers. Low around 43. Chance of precipitation is 80%.
Sunday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 57.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 ft)
9:21 am CDT Apr 2, 2025
10am CDT Apr 2, 2025-6pm CDT Apr 8, 2025
 
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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