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.

A Few Clouds

32°C

90°F

Humidity 44%
Wind Speed Calm
Barometer 1016.6 mb (30.03 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Heat Index33°C (92°F)
Last update 3 Jul 12:53 pm CDT
Extended Forecast for

2 Miles WNW Belleville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 33. Calm wind.

    High: 33 °C

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 22. Calm wind.

    Low: 22 °C

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny, with a high near 35. Light south wind increasing to 8 to 13 km/h in the morning.

    High: 35 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 22. South wind 5 to 10 km/h becoming calm after midnight.

    Low: 22 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 35. South wind 5 to 13 km/h.

    High: 35 °C

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °C

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33.

    High: 33 °C

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23.

    Low: 23 °C

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32.

    High: 32 °C

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 33. Calm wind.
Tonight
Mostly clear, with a low around 22. Calm wind.
Independence Day
Mostly sunny, with a high near 35. Light south wind increasing to 8 to 13 km/h in the morning.
Friday Night
Mostly clear, with a low around 22. South wind 5 to 10 km/h becoming calm after midnight.
Saturday
Sunny, with a high near 35. South wind 5 to 13 km/h.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 22.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Belleville IL
 38.55°N 90.04°W (Elev. 538 m)
Last Update:
11:21 am CDT Jul 3, 2025
Forecast Valid:
1pm CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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