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.

Fair

73°F

23°C

Humidity 74%
Wind Speed S 18 G 25 mph
Barometer 29.87 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 Apr 10:55 pm CDT
Extended Forecast for

5 Miles E Carlinville IL

  • Tonight

    Tonight: Isolated showers and thunderstorms after 4am. Increasing clouds, with a low around 65. Southwest wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Mostly cloudy, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 80 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then scattered showers after 4am. Low around 60. Southwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 60 °F

    T-storms
    Likely then
    Showers

  • Thursday

    Thursday: Scattered showers before 1pm, then scattered showers and thunderstorms between 1pm and 4pm, then scattered showers after 4pm. Mostly sunny, with a high near 79. West wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 79 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. West wind around 6 mph becoming south after midnight.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms after 4am. Increasing clouds, with a low around 65. Southwest wind 10 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Mostly cloudy, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then scattered showers after 4am. Low around 60. Southwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday
Scattered showers before 1pm, then scattered showers and thunderstorms between 1pm and 4pm, then scattered showers after 4pm. Mostly sunny, with a high near 79. West wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 57. West wind around 6 mph becoming south after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 36.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Carlinville IL
 39.27°N 89.8°W (Elev. 650 ft)
Last Update:
10:31 pm CDT Apr 14, 2026
Forecast Valid:
11pm CDT Apr 14, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation