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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

54°F

12°C

Humidity 44%
Wind Speed W 10 mph
Barometer 30.00 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 1 Nov 1:55 pm CDT
Extended Forecast for

Carlinville IL

Freeze Warning November 2, 01:00am until November 2, 07:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: A 20 percent chance of rain. Cloudy, with a high near 51. Northwest wind around 9 mph.

    High: 51 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Widespread frost, mainly after midnight. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 29. Light northwest wind.

    Low: 29 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 54 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 2am. Otherwise, clear, with a low around 34. South wind 3 to 6 mph.

    Low: 34 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 63. Southwest wind 6 to 10 mph becoming west in the afternoon.

    High: 63 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Cloudy, with a high near 51. Northwest wind around 9 mph.
Tonight
Widespread frost, mainly after midnight. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 29. Light northwest wind.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Areas of frost after 2am. Otherwise, clear, with a low around 34. South wind 3 to 6 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 63. Southwest wind 6 to 10 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Clear, with a low around 38.
Thursday
Sunny, with a high near 65.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 48.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carlinville IL
 39.3°N 89.89°W (Elev. 623 ft)
Last Update:
1:56 pm CDT Nov 1, 2025
Forecast Valid:
2pm CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation