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Onarga, Illinois Weather Forecast
Onarga, Illinois Weather
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Weather Forecast for Onarga, Illinois : Iroquois County
Issued: 6:06 am CST Dec 7, 2025 Latitude: 40.715035 Longitude: -88.0061509 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
70% chance of freezing rain & snow on Today Mostly Cloudy on Tonight Mostly Cloudy on Monday Partly Sunny on Tuesday 30% chance of rain & snow on Wednesday 20% chance of snow on Thursday Partly Sunny on Friday Partly Sunny on Saturday
High: 27 °F Low: 16°F High: 37°F High: 38°F High: 37°F High: 28°F High: 18°F High: 12°F
Low: 11°F Low: 34°F Low: 20°F Low: 9°F Low: -1°F  
Freezing Rain & Snow Mostly Cloudy Mostly Cloudy Partly Sunny Rain & Snow Snow Partly Sunny Partly Sunny
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Current Conditions at
RANTOUL - (KTIP)
34°
Cloudy
Mist
as of 6:15 AM CST
Rel. Humidity: 93%
Dew Point: 32°F
Visibility: 1 3/4 Miles
Pressure: 29.95 in.
Flight Rule: LIFR
Wind Data
6 MPH
200° South
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
30°
Feels like 21°F
Cloudy
Unknown Precip
as of 6:15 AM CST
Rel. Humidity: 100%
Dew Point: 30°F
Visibility: 3 Miles
Pressure: 29.98 in.
Flight Rule: IFR
Wind Data
10 MPH
030° Northeast
Cloud Level(s): Solid Overcast at 600ft
70% chance of freezing rain & snow Today Today... Snow likely, possibly mixed with freezing rain before 8am, then a chance of snow between 8am and 11am. Patchy fog before 10am. Otherwise, cloudy, with a temperature falling to around 27 by 5pm. East northeast wind 5 to 10 mph becoming north 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Total daytime snow accumulation of less than a half inch possible.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 16. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Mostly Cloudy on Monday Monday... Mostly cloudy, then gradually becoming sunny, with a steady temperature around 20. Calm wind becoming south around 5 mph in the afternoon.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 11. South wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 38. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
60% chance of rain Tuesday Night Tuesday Night... Rain likely, mainly after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
30% chance of rain & snow Wednesday Wednesday... A chance of rain and snow showers before noon. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 20.
20% chance of snow Thursday Thursday... A chance of snow. Mostly cloudy, with a high near 28.
20% chance of snow Thursday Night Thursday Night... A chance of snow before midnight. Mostly cloudy, with a low around 9.
Partly Sunny on Friday Friday... Partly sunny, with a high near 18.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -1.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 12.
Sun Almanac for Onarga, Illinois
Sunrise: 07:03 AM
Sunset: 4:24 PM
Civil Sunrise:06:32 AM
Civil Sunset: 4:55 PM
Nautical Sunrise: 05:58 AM
Nautical Sunset: 5:29 PM
Astro Sunrise: 05:25 AM
Astro Sunset: 6:03 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.