National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

44°F

7°C

Humidity 76%
Wind Speed Calm
Barometer 30.08 in (1018.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 1 Nov 6:53 am CDT
Extended Forecast for

Waterloo IL

Freeze Watch November 2, 02:00am until November 2, 07:00am
Click here for hazard details and duration
Freeze Watch

  • Today

    Today: A slight chance of rain before 11am, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 52. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, partly cloudy, with a low around 33. Light northwest wind.

    Low: 33 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 54. Light north wind.

    High: 54 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36. Calm wind becoming south around 6 mph after midnight.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 64. Southwest wind 6 to 8 mph becoming west in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
A slight chance of rain before 11am, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 52. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 20%.
Tonight
Patchy frost after 1am. Otherwise, partly cloudy, with a low around 33. Light northwest wind.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 54. Light north wind.
Sunday Night
Clear, with a low around 36. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 64. Southwest wind 6 to 8 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Clear, with a low around 42.
Thursday
Sunny, with a high near 67.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 51.
Friday
A 30 percent chance of rain. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IL
 38.33°N 90.16°W (Elev. 600 ft)
Last Update:
6:01 am CDT Nov 1, 2025
Forecast Valid:
7am CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
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