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.

Mostly Cloudy

74°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 19 Jul 3:55 am CDT
Extended Forecast for

3 Miles SSE Carlinville IL

  • Today

    Today: A slight chance of showers and thunderstorms between 1pm and 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 20%.

    High: 85 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Patchy smoke. Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Patchy Smoke

  • Monday

    Monday: Patchy smoke before 11am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Southwest wind 6 to 11 mph becoming northwest in the afternoon.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 1pm and 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the morning. Chance of precipitation is 20%.
Tonight
Patchy smoke. Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Monday
Patchy smoke before 11am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 89. Calm wind.
Monday Night
Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.
Tuesday
Sunny, with a high near 92. Southwest wind 6 to 11 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 61.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Carlinville IL
 39.25°N 89.86°W (Elev. 551 ft)
Last Update:
2:26 am CDT Jul 19, 2026
Forecast Valid:
4am CDT Jul 19, 2026-6pm CDT Jul 25, 2026
 
Forecast Discussion
 
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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