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.

Fog/Mist

58°F

14°C

Humidity 97%
Wind Speed N 5 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 57°F (14°C)
Visibility 2.50 mi
Last update 21 Nov 3:53 pm CST
Extended Forecast for

2 Miles WNW Belleville IL

  • This Afternoon

    This Afternoon: A 40 percent chance of rain. Areas of fog after 5pm. Otherwise, mostly cloudy, with a high near 58. North wind 3 to 5 mph.

    High: 58 °F

    Chance Rain
    and Areas Fog

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 2am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, cloudy, with a low around 47. East wind 5 to 8 mph becoming north in the evening.

    Low: 47 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog between 8am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 58. North wind 5 to 7 mph becoming west in the afternoon.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. West wind 3 to 6 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely, mainly after noon. Cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Chance Rain
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 51. Chance of precipitation is 80%.

    Low: 51 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Areas of fog after 5pm. Otherwise, mostly cloudy, with a high near 58. North wind 3 to 5 mph.
Tonight
A 50 percent chance of rain, mainly before 2am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, cloudy, with a low around 47. East wind 5 to 8 mph becoming north in the evening.
Saturday
Patchy fog between 8am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 58. North wind 5 to 7 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 42. West wind 3 to 6 mph.
Sunday
Sunny, with a high near 61. Light and variable wind.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Rain likely, mainly after noon. Cloudy, with a high near 57. Chance of precipitation is 70%.
Monday Night
Rain, mainly before midnight. Low around 51. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 49.
Wednesday Night
Partly cloudy, with a low around 31.
Thanksgiving Day
Mostly sunny, with a high near 47.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Belleville IL
 38.55°N 90.04°W (Elev. 538 ft)
Last Update:
4:36 pm CST Nov 21, 2025
Forecast Valid:
4pm CST Nov 21, 2025-6pm CST Nov 28, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation