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.

Fair

53°F

12°C

Humidity 47%
Wind Speed Vrbl 5 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 1 Nov 11:53 am CDT
Extended Forecast for

4 Miles SW Waterloo IL

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

  • This Afternoon

    This Afternoon: A 20 percent chance of rain. Mostly cloudy, with a high near 52. West wind 6 to 8 mph.

    High: 52 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 32. Northwest wind 3 to 6 mph.

    Low: 32 °F

    Slight Chance
    Rain then
    Frost

  • Sunday

    Sunday: Widespread frost before 9am. Otherwise, sunny, with a high near 54. Light northwest wind.

    High: 54 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 4am. Otherwise, clear, with a low around 36. Calm wind becoming south around 6 mph after midnight.

    Low: 36 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 64. Southwest wind 6 to 8 mph becoming west in the afternoon.

    High: 64 °F

    Areas Frost
    then 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 49.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Mostly cloudy, with a high near 52. West wind 6 to 8 mph.
Tonight
A 20 percent chance of rain before 8pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 32. Northwest wind 3 to 6 mph.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 54. Light northwest wind.
Sunday Night
Areas of frost after 4am. Otherwise, clear, with a low around 36. Calm wind becoming south around 6 mph after midnight.
Monday
Areas of frost before 8am. Otherwise, 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 49.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Clear, with a low around 43.
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:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
Last Update:
12:01 pm CDT Nov 1, 2025
Forecast Valid:
12pm CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation