Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

38°F

3°C

Humidity 73%
Wind Speed NE 6 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 14 Mar 2:53 am CDT
Extended Forecast for

3 Miles SE Mascoutah IL

  • Overnight

    Overnight: Partly cloudy, with a low around 36. Northeast wind 3 to 5 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63. East wind 6 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. South wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 4pm.  High near 67. Breezy, with a south wind 22 to 28 mph, with gusts as high as 39 mph.  Chance of precipitation is 80%.

    High: 67 °F

    Breezy.
    Slight Chance
    Rain then
    Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible.  Low around 22. Breezy, with a southwest wind 21 to 26 mph becoming west in the evening. Winds could gust as high as 40 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 22 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: A 20 percent chance of snow before 1pm.  Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after 1am.  Mostly cloudy, with a low around 30. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 36. Northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 63. East wind 6 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 54. South wind 10 to 17 mph, with gusts as high as 28 mph.
Sunday
Rain, with thunderstorms also possible after 4pm. High near 67. Breezy, with a south wind 22 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Sunday Night
Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 22. Breezy, with a southwest wind 21 to 26 mph becoming west in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Mascoutah IL
 38.47°N 89.76°W (Elev. 423 ft)
1:26 am CDT Mar 14, 2026
3am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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