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Tonica, Illinois Weather Forecast
Tonica, Illinois Weather
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Weather Forecast for Tonica, Illinois : LaSalle County
Issued: 12:26 am CST Dec 21, 2025 Latitude: 41.2158684 Longitude: -89.0667489 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Christmas Day Friday Saturday
Clear on Overnight Sunny on Sunday Mostly Cloudy on Monday Mostly Cloudy on Tuesday 20% chance of rain on Wednesday 20% chance of  on Christmas Day Mostly Cloudy on Friday Partly Sunny on Saturday
Low: 19°F High: 34°F High: 42°F High: 46°F High: 49°F High: 59°F High: 50°F High: 46°F
Low: 24°F Low: 36°F Low: 32°F Low: 49°F Low: 39°F Low: 34°F  
Clear Sunny Mostly Cloudy Mostly Cloudy Rain Mostly Cloudy Mostly Cloudy Partly Sunny
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Current Conditions at
PERU - (KVYS)
28°
Feels like 18°F
Clear
as of 12:55 AM CST
Rel. Humidity: 50%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 17 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
27°
Clear
as of 12:55 AM CST
Rel. Humidity: 63%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
5 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
28°
Feels like 17°F
Clear
as of 12:55 AM CST
Rel. Humidity: 68%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 17 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
27°
Clear
as of 12:55 AM CST
Rel. Humidity: 73%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
8 MPH
320° Northwest
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around 19. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Sunny on Sunday Sunday... Sunny, with a high near 34. North northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.

Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a low around 24. South wind 5 to 10 mph, with gusts as high as 15 mph.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 42. South wind 10 to 15 mph, with gusts as high as 25 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 36. Southwest wind around 10 mph, with gusts as high as 15 mph.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 46.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 32.

20% chance of rain Wednesday Wednesday... A chance of rain between noon and 3pm, then a chance of rain or drizzle after 3pm. Cloudy, with a high near 49.

20% chance of rain Wednesday Night Wednesday Night... A chance of rain or drizzle before midnight, then a chance of drizzle after midnight. Cloudy, with a low around 49.

20% chance of  Christmas Day Christmas Day... A chance of drizzle. Mostly cloudy, with a high near 59.

20% chance of  Thursday Night Thursday Night... A chance of drizzle. Mostly cloudy, with a low around 39.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 50.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 34.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 46.

Current Radar Image


Sun Almanac for Tonica, Illinois
Sunrise: 07:19 AM
Sunset: 4:31 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:02 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:37 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:10 PM
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