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.

Mostly Cloudy

75°F

24°C

Humidity 50%
Wind Speed N 6 mph
Barometer 30.04 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Sep 3:50 pm CDT
Extended Forecast for

Eagarville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 51. North wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 78. Calm wind.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. Southeast wind 3 to 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 78. Calm wind.
Monday Night
Clear, with a low around 54. Calm wind.
Tuesday
Sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 63. Southeast wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 68.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Thursday Night
Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Eagarville IL
 39.12°N 89.78°W (Elev. 617 ft)
Last Update:
2:56 pm CDT Sep 27, 2026
Forecast Valid:
4pm CDT Sep 27, 2026-6pm CDT Oct 4, 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