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.

Light Drizzle

54°F

12°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 29.91 in
Dewpoint 54°F (12°C)
Visibility 3.00 mi
Wind Chill52°F (11°C)
Last update 21 Nov 11:50 am CST
Extended Forecast for

Carlinville IL

  • This Afternoon

    This Afternoon: Rain, mainly before 4pm. Patchy fog before 1pm. High near 51. Northeast wind around 9 mph. Chance of precipitation is 90%.

    High: 51 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: A 50 percent chance of rain before 3am. Cloudy, with a low around 38. North wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 55. North wind 5 to 7 mph becoming southwest in the afternoon.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. West wind 5 to 8 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely, mainly after noon. Cloudy, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Chance Rain
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 60.

    High: 60 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Rain, mainly before 4pm. Patchy fog before 1pm. High near 51. Northeast wind around 9 mph. Chance of precipitation is 90%.
Tonight
A 50 percent chance of rain before 3am. Cloudy, with a low around 38. North wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 55. North wind 5 to 7 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 35. West wind 5 to 8 mph becoming calm after midnight.
Sunday
Sunny, with a high near 60. Light and variable wind.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Rain likely, mainly after noon. Cloudy, with a high near 57. Chance of precipitation is 60%.
Monday Night
Rain, mainly before midnight. Low around 48. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 24.
Thanksgiving Day
Mostly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carlinville IL
 39.27°N 89.89°W (Elev. 614 ft)
Last Update:
11:11 am CST Nov 21, 2025
Forecast Valid:
12pm CST Nov 21, 2025-6pm CST Nov 27, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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