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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.

Overcast

65°F

18°C

Humidity 76%
Wind Speed E 8 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 May 7:53 pm CDT
Extended Forecast for

Belleville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. East wind 6 to 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Cloudy, with a high near 70. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.

    High: 70 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly after 7pm. Cloudy, with a low around 59. Northeast wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Memorial Day

    Memorial Day: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. East wind 6 to 8 mph.
Friday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Cloudy, with a high near 70. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers, mainly after 7pm. Cloudy, with a low around 59. Northeast wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 63. Calm wind.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63.
Memorial Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Belleville IL
 38.52°N 89.98°W (Elev. 509 ft)
Last Update:
6:06 pm CDT May 21, 2026
Forecast Valid:
8pm CDT May 21, 2026-6pm CDT May 28, 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