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Derby, Illinois Weather Forecast
Derby, Illinois Weather
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Weather Forecast for Derby, Illinois : Saline County
Issued: 7:32 pm CST Jan 25, 2026 Latitude: 37.6289374 Longitude: -88.385598 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Cloudy on Tonight Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday Partly Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday
Low: -4°F High: 11°F High: 27°F High: 24°F High: 18°F High: 17°F High: 19°F High: 26°F
Low: 2 °F Low: -1°F Low: 1 °F Low: 2 °F Low: -2°F Low: 2 °F  
Mostly Cloudy Sunny Sunny Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
10°
Clear
as of 9:15 PM CST
Rel. Humidity: 72%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
8 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
10°
Clear
as of 9:15 PM CST
Rel. Humidity: 66%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
6 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
HENDERSON CITY - (KEHR)
12°
Feels like 0°F
Cloudy
Light Snow
as of 8:56 PM CST
Rel. Humidity: 78%
Dew Point: 7°F
Visibility: 9 Miles
Pressure: 30.21 in.
Flight Rule: MVFR
Wind Data
9 MPH
330° Northwest
Cloud Level(s): Solid Overcast at 1900ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around -4. Wind chill values as low as -17. Northwest wind around 9 mph, with gusts as high as 18 mph.

Sunny on Monday Monday... Sunny, with a high near 11. Wind chill values as low as -18. West northwest wind 5 to 7 mph becoming calm in the afternoon.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a temperature falling to near 2 by 10pm, then rising to around 9 during the remainder of the night. Wind chill values as low as -11. Light southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 27. Wind chill values as low as -6. Southwest wind 5 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around -1. Light north northwest wind.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 24. Calm wind becoming west around 5 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 1. Light and variable wind.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 18. North wind around 5 mph becoming calm in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 2. Light north wind.

Partly Sunny on Friday Friday... Partly sunny, with a high near 17. North wind 3 to 5 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around -2. Light north wind.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 19. North northwest wind around 5 mph becoming calm in the afternoon.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 2. Light and variable wind.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 26. South southwest wind 3 to 5 mph.

Current Radar Image


Sun Almanac for Derby, Illinois
Sunrise: 07:02 AM
Sunset: 5:10 PM
Civil Sunrise:06:34 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:03 AM
Nautical Sunset: 6:09 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:40 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.