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.

Light Rain

48°F

9°C

Humidity 82%
Wind Speed SW 12 mph
Barometer 29.80 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 13 Jan 9:50 pm CST
Extended Forecast for

Carlinville IL

  • Tonight

    Tonight: A chance of sprinkles and flurries after 5am. Mostly cloudy, with a low around 33. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Cloudy then
    Chance
    Sprinkles/Flurries

  • Wednesday

    Wednesday: A chance of flurries before 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 28 by 5pm. Breezy, with a north wind 16 to 24 mph, with gusts as high as 33 mph.

    High: 35 °F⇓

    Chance
    Flurries and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 14. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 14 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 30. Northwest wind 6 to 9 mph becoming south in the afternoon.

    High: 30 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 23. South wind 7 to 15 mph, with gusts as high as 23 mph.

    Low: 23 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 40. Breezy.

    High: 40 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of sprinkles and flurries after 5am. Mostly cloudy, with a low around 33. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.
Wednesday
A chance of flurries before 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 28 by 5pm. Breezy, with a north wind 16 to 24 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly clear, with a low around 14. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 30. Northwest wind 6 to 9 mph becoming south in the afternoon.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23. South wind 7 to 15 mph, with gusts as high as 23 mph.
Friday
Partly sunny, with a high near 40. Breezy.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Partly sunny, with a high near 22.
Saturday Night
Partly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 25.
Sunday Night
Partly cloudy, with a low around 12.
M.L.King Day
Mostly sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Mostly sunny, with a high near 26.
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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:
9:26 pm CST Jan 13, 2026
Forecast Valid:
10pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation