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

52°F

11°C

Humidity 97%
Wind Speed N 12 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 51°F (11°C)
Visibility 3.00 mi
Wind Chill48°F (9°C)
Last update 21 Nov 9:53 pm CST
Extended Forecast for

2 Miles E Valmeyer IL

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 47. North wind 6 to 8 mph.

    Low: 47 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 57. North wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 57 °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 62. Northwest wind around 6 mph becoming calm in the morning.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44. Calm wind becoming southeast around 6 mph after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Rain, mainly after noon. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Chance Rain
    then Rain

  • 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 after noon. Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 47. North wind 6 to 8 mph.
Saturday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 57. North wind 5 to 7 mph becoming light and variable in the afternoon.
Saturday Night
Mostly clear, with a low around 42. West wind 3 to 6 mph.
Sunday
Sunny, with a high near 62. Northwest wind around 6 mph becoming calm in the morning.
Sunday Night
Mostly cloudy, with a low around 44. Calm wind becoming southeast around 6 mph after midnight.
Monday
Rain, mainly after noon. High near 57. Chance of precipitation is 80%.
Monday Night
Rain, mainly before midnight. Low around 51. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain after noon. 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 30.
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
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Valmeyer IL
 38.31°N 90.27°W (Elev. 699 ft)
Last Update:
9:36 pm CST Nov 21, 2025
Forecast Valid:
10pm CST Nov 21, 2025-6pm CST Nov 28, 2025
 
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Additional Resources

Radar & Satellite Image

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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