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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Rain

69°F

21°C

Humidity 84%
Wind Speed SW 6 G 18 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 19 May 8:53 am CDT
Extended Forecast for

3 Miles ESE Collinsville IL

Flood Watch May 19, 09:13am until May 19, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 19, 09:13am until May 19, 01:00pm

    NOW until 1:00pm Tue

    Flood Watch

  • Today

    High: 77 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 58. North wind 8 to 10 mph.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 8am. Mostly cloudy, with a high near 70. North wind 9 to 11 mph.

    High: 70 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53. Northeast wind around 8 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 71. East wind 8 to 10 mph.

    High: 71 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 77. Southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Tonight
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 58. North wind 8 to 10 mph.
Wednesday
A 20 percent chance of showers before 8am. Mostly cloudy, with a high near 70. North wind 9 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 53. Northeast wind around 8 mph.
Thursday
Mostly cloudy, with a high near 71. East wind 8 to 10 mph.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 79.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Memorial Day
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Collinsville IL
 38.66°N 89.95°W (Elev. 584 ft)
Last Update:
8:46 am CDT May 19, 2026
Forecast Valid:
9am CDT May 19, 2026-6pm CDT May 25, 2026
 
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