Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

84°F

29°C

Humidity 37%
Wind Speed SW 12 mph
Barometer 29.90 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 7 Oct 1:50 pm CDT
Extended Forecast for

Hillsboro IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. Calm wind becoming west 5 to 9 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 55. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light north wind.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. Calm wind.

    Low: 55 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86. South wind 3 to 8 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance Rain

  • Sunday

    Sunday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 86. Calm wind becoming west 5 to 9 mph.
Tonight
Clear, with a low around 55. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 81. Light north wind.
Thursday Night
Clear, with a low around 55. Calm wind.
Friday
Sunny, with a high near 86. South wind 3 to 8 mph.
Friday Night
Clear, with a low around 59.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 57.
Columbus Day
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro IL
 39.17°N 89.52°W (Elev. 686 ft)
2:21 pm CDT Oct 7, 2026
2pm CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database