What is today's weather forecast for Tonica, IL?

Today's forecast for Tonica shows a high of 26 degrees and a low of 16 degrees Fahrenheit. Patchy blowing snow before 3pm.

What is the 7-day weather forecast for Tonica, IL?

The 7-day forecast for Tonica shows highs from 26 to 46 degrees and lows from 11 to 32 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Tonica, IL this week?

Yes, rain is possible in Tonica this week. Precipitation chances: Monday (50% chance), Wednesday (50% chance), Thursday (70% chance).

How accurate is the Tonica weather forecast?

WeatherForYou provides highly accurate Tonica forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Tonica, IL Weather Forecast and Current Conditions

WEATHER ALERTS - Hydrologic Outlook - Special Weather Statement

Current Conditions From Nearby Station

Switch to Metric Units

3°F
Feels Like -14°F

Humidity 69% Dew Point -5°F Wind S 12 MPH Barometer 30.42 in.

Visibility 10 mi.

Report from a NOAA weather station 10.2 mi. NNW of central Tonica
at 3:55 AM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

50%

TueDec 16

WedDec 17

ThuDec 18

70%

FriDec 19

SatDec 20

SunDec 21

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 26°F to a high of 46°F by week's end. Some precipitation possible with wintry mix on at least one day.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 36°F and lows around 21°F.

This Date in Weather History

1839 - The first of triple storms hit Massachusetts Bay. The storm produced whole gales, and more than 20 inches of snow in interior New England. There was great loss of life at Gloucester MA.

Tonica, IL 7 Day Weather Forecast Details

Monday Dec 15

Day: Patchy blowing snow before 3pm. Partly sunny, with a high near 26. Wind chill values as low as -15. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

Night: Partly cloudy, with a low around 16. Southwest wind around 5 mph, with gusts as high as 10 mph.

Tuesday Dec 16

Day: Mostly sunny, with a high near 36. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

Night: Mostly cloudy, with a low around 28. West wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday Dec 17

Day: Mostly sunny, with a high near 38. West wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.

Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 32. Breezy.

Thursday Dec 18

Day: Rain likely before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 46. Breezy. Chance of precipitation is 70%.

Night: Mostly cloudy, with a low around 11. Blustery.

Friday Dec 19

Day: Partly sunny, with a high near 30.

Night: Mostly cloudy, with a low around 24.

Saturday Dec 20

Day: Partly sunny, with a high near 43.

Night: Mostly cloudy, with a low around 24.

Sunday Dec 21

Day: Mostly sunny, with a high near 36.

About Tonica, IL

Tonica is a village in LaSalle County, Illinois, United States. The population was 749 at the 2020 census, down from 768 at the 2010 census. It is part of the Ottawa Micropolitan Statistical Area.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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