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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

35°F

2°C

Humidity 91%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 33°F (1°C)
Visibility 7.00 mi
Last update 7 Jan 1:15 am CST
Extended Forecast for

5 Miles E Carlinville IL

  • Overnight

    Overnight: Mostly clear, with a low around 32. Light and variable wind.

    Low: 32 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, sunny, with a high near 59. Calm wind becoming south 5 to 9 mph in the morning.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 42. South wind 8 to 10 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain. High near 60. South wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.

    High: 60 °F

    Rain Likely
    then Rain

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 47. South wind 9 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely then
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: A slight chance of rain before noon, then a slight chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 32. Light and variable wind.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 59. Calm wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 42. South wind 8 to 10 mph.
Thursday
Rain. High near 60. South wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 47. South wind 9 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Friday
Mostly cloudy, with a high near 52.
Friday Night
A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 37.
Saturday
A slight chance of rain before noon, then a slight chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Carlinville IL
 39.27°N 89.8°W (Elev. 650 ft)
Last Update:
12:56 am CST Jan 7, 2026
Forecast Valid:
1am CST Jan 7, 2026-6pm CST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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