Hornsby, Illinois Weather
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Weather Forecast for Hornsby, Illinois : Macoupin County
Issued: 1:21 pm CDT Sep 16, 2025 Latitude: 39.1706034 Longitude: -89.7450928 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on This Afternoon Clear on Tonight Sunny on Wednesday Mostly Sunny on Thursday 30% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 20% chance of thunderstorms on Monday
High: 91°F Low: 59°F High: 91°F High: 92°F High: 85°F High: 84°F High: 85°F High: 85°F
Low: 61°F Low: 63°F Low: 62°F Low: 62°F Low: 63°F  
Sunny Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
LITCHFIELD MUNI ARP - (K3LF)
88°
Clear
as of 12:55 PM CDST
Rel. Humidity: 31%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
3 MPH
030° Northeast
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
90°
Feels like 123°F
Clear
as of 12:50 PM CDST
Rel. Humidity: 94%
Dew Point: 88°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Clear
Current Conditions at
TAYLORVILLE MUNICIPAL - (KTAZ)
90°
Clear
as of 12:57 PM CDST
Rel. Humidity: 31%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
91°
Clear
as of 12:54 PM CDST
Rel. Humidity: 29%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
8 MPH
050° Northeast
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 91. Northeast wind 3 to 6 mph.
Clear on Tonight Tonight... Clear, with a low around 59. East wind 3 to 6 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 91. Northeast wind 3 to 5 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 61. Calm wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 92. Calm wind becoming south around 6 mph in the morning.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 63.
30% chance of thunderstorms Friday Friday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.
40% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
30% chance of thunderstorms Saturday Saturday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
30% chance of thunderstorms Sunday Sunday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
20% chance of thunderstorms Monday Monday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Current Radar Image


Sun Almanac for Hornsby, Illinois
Sunrise: 06:42 AM
Sunset: 7:06 PM
Civil Sunrise:06:15 AM
Civil Sunset: 7:32 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 8:04 PM
Astro Sunrise: 05:11 AM
Astro Sunset: 8:36 PM
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