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.

Overcast

51°F

11°C

Humidity 74%
Wind Speed NE 15 G 25 mph
Barometer 30.08 in (1018.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 27 Mar 2:53 am CDT
Extended Forecast for

2 Miles WNW Belleville IL

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. North wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. South wind around 7 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm. Cloudy, with a low around 41. North wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 56. Light and variable wind becoming south 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 40. South wind around 7 mph.
Sunday
Partly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
A 20 percent chance of rain after 1pm. Partly sunny, with a high near 84.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 63.
Wednesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 76.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
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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 ft)
Last Update:
2:51 am CDT Mar 27, 2026
Forecast Valid:
3am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation