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

46°F

8°C

Humidity 61%
Wind Speed SE 3 mph
Barometer 29.94 in (1013.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 27 Feb 10:53 pm CST
Extended Forecast for

Brooklyn IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. North wind 5 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain, mainly between 1pm and 5pm. Mostly sunny, with a high near 65. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 65 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 31. South wind 5 to 10 mph becoming north in the evening.

    Low: 31 °F

    Slight Chance
    Rain then
    Mostly Clear

  • 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. North wind 5 to 8 mph.
Saturday
A 30 percent chance of rain, mainly between 1pm and 5pm. Mostly sunny, with a high near 65. Northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 31. South wind 5 to 10 mph becoming north in the evening.
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:
10:31 pm CST Feb 27, 2026
Forecast Valid:
11pm 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