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

77°F

25°C

Humidity 51%
Wind Speed S 18 mph
Barometer 29.87 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 23 Apr 11:45 am CDT
Extended Forecast for

Mount Clare IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 80. Breezy, with a south wind 17 to 20 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 60. South wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Partly Cloudy
    then Showers

  • Friday

    Friday: Showers and thunderstorms, mainly before 10am. High near 73. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 90%.

    High: 73 °F

    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. North wind around 6 mph.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. Northeast wind around 7 mph.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 74. Breezy. Chance of precipitation is 80%.

    High: 74 °F

    Breezy.
    Showers then
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 80. Breezy, with a south wind 17 to 20 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 60. South wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday
Showers and thunderstorms, mainly before 10am. High near 73. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 90%.
Friday Night
Partly cloudy, with a low around 48. North wind around 6 mph.
Saturday
Sunny, with a high near 74. Northeast wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 73.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 74. Breezy. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Clare IL
 39.1°N 89.81°W (Elev. 633 ft)
Last Update:
10:41 am CDT Apr 23, 2026
Forecast Valid:
12pm CDT Apr 23, 2026-6pm CDT Apr 29, 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