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.

Fair

53°F

12°C

Humidity 43%
Wind Speed Calm
Barometer 29.88 in (1011.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 27 Feb 8:53 pm CST
Extended Forecast for

Brooklyn IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. West wind 6 to 8 mph becoming north after midnight.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 67. Northeast wind 6 to 8 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. South wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 22 mph.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after noon. Increasing clouds, with a high near 47. Northeast wind around 10 mph.

    High: 47 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain and snow. Low around 33. East wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow

  • Monday

    Monday: A chance of rain and snow before noon, then a slight chance of rain. Cloudy, with a high near 45. Chance of precipitation is 40%.

    High: 45 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 39. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 39. West wind 6 to 8 mph becoming north after midnight.
Saturday
A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 67. Northeast wind 6 to 8 mph becoming south in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 32. South wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 22 mph.
Sunday
A 20 percent chance of rain after noon. Increasing clouds, with a high near 47. Northeast wind around 10 mph.
Sunday Night
Rain and snow. Low around 33. East wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Cloudy, with a high near 45. Chance of precipitation is 40%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 39. Chance of precipitation is 60%.
Tuesday
Rain and possibly a thunderstorm. High near 59. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 70%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 54.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Brooklyn IL
 38.64°N 90.17°W (Elev. 400 ft)
Last Update:
7:56 pm CST Feb 27, 2026
Forecast Valid:
9pm CST Feb 27, 2026-6pm CST Mar 6, 2026
 
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