Custer, Illinois Weather
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Weather Forecast for Custer, Illinois : Marshall County
Issued: 2:56 am CDT Jun 4, 2025 Latitude: 41.0372561 Longitude: -89.1536945 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
100% chance of thunderstorms on Overnight 90% chance of thunderstorms on Wednesday Mostly Sunny on Thursday 40% chance of on Friday Mostly Sunny on Saturday 40% chance of rain on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 63°F High: 69°F High: 78°F High: 78°F High: 77°F High: 80°F High: 77°F High: 78°F
Low: 54°F Low: 57°F Low: 58°F Low: 57°F Low: 57°F Low: 54°F  
Thunderstorms Thunderstorms Mostly Sunny Partly Sunny Mostly Sunny Rain Mostly Sunny Mostly Sunny
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Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
66°
Cloudy
Light Rain
as of 2:55 AM CDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 7 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
3 MPH
190° South
Cloud Level(s): Scattered at 800ft, Broken at 8500ft, Solid Overcast at 11000ft
Current Conditions at
PERU - (KVYS)
68°
Cloudy
Rain
as of 2:55 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
6 MPH
250° West
Cloud Level(s): Solid Overcast at 1200ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
70°
Cloudy
Light Rain
as of 2:55 AM CDST
Rel. Humidity: 83%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
9 MPH
260° West
Cloud Level(s): Scattered at 1600ft, Solid Overcast at 3500ft
Current Conditions at
PEORIA - (KPIA)
66°
Cloudy
Rain Mist
as of 2:54 AM CDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 5 Miles
Pressure: 29.87 in.
Flight Rule: MVFR
Wind Data
7 MPH
200° South
Cloud Level(s): Scattered at 400ft, Broken at 7000ft, Solid Overcast at 11000ft
100% chance of thunderstorms Overnight Overnight... Showers and possibly a thunderstorm. Low around 63. Southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
90% chance of thunderstorms Wednesday Wednesday... Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 69. West wind around 10 mph becoming northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
30% chance of thunderstorms Wednesday Night Wednesday Night... A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 54. East northeast wind 3 to 8 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 78. East northeast wind 6 to 10 mph, with gusts as high as 15 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 57. East northeast wind 5 to 7 mph.
40% chance of Friday Friday... A 40 percent chance of showers. Partly sunny, with a high near 78. Northeast wind 6 to 8 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 58. Northeast wind 5 to 7 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 77.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 57.
40% chance of rain Sunday Sunday... A 40 percent chance of showers after 1pm. Mostly sunny, with a high near 80.
20% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms. Mostly clear, with a low around 57.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 77.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 54.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 78.
Current Radar Image


Sun Almanac for Custer, Illinois
Sunrise: 05:25 AM
Sunset: 8:25 PM
Civil Sunrise:04:52 AM
Civil Sunset: 8:58 PM
Nautical Sunrise: 04:10 AM
Nautical Sunset: 9:40 PM
Astro Sunrise: 03:21 AM
Astro Sunset: 10:29 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.