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

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday

A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible. A Slight Risk (Level 2 of 5) for scattered severe thunderstorms has been issued from west Texas to the lower Mississippi Valley Thursday afternoon into Thursday night. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.77 in (1008.0 mb)
Dewpoint 66°F (19°C)
Visibility 9.00 mi
Last update 16 May 8:53 pm CDT
Extended Forecast for

Collinsville IL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 5am. Otherwise, cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 10am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 75 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 61. Southeast wind 3 to 5 mph.

    Low: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. North wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 5am. Otherwise, cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 10am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Friday Night
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 61. Southeast wind 3 to 5 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 64. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 67.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 83.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 ft)
Last Update:
7:37 pm CDT May 16, 2024
Forecast Valid:
9pm CDT May 16, 2024-6pm CDT May 23, 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