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.

Fair

72°F

22°C

Humidity 58%
Wind Speed SW 8 mph
Barometer 29.90 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 13 Oct 5:35 am CDT
Extended Forecast for

Hillsboro IL

  • Today

    Today: Sunny, with a high near 94. Southwest wind 6 to 8 mph.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 69. Light and variable wind becoming south around 6 mph.

    Low: 69 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 80. Light northwest wind. Chance of precipitation is 90%.

    High: 80 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 62. Light east wind.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 79. East wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 62. Breezy.

    High: 62 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 94. Southwest wind 6 to 8 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 69. Light and variable wind becoming south around 6 mph.
Wednesday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 80. Light northwest wind. Chance of precipitation is 90%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 62. Light east wind.
Thursday
Showers and possibly a thunderstorm. High near 79. East wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 62. Breezy.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro IL
 39.17°N 89.46°W (Elev. 607 ft)
Last Update:
1:21 am CDT Oct 13, 2026
Forecast Valid:
5am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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