What is today's weather forecast for Illinois City, IL?

Today's forecast for Illinois City shows a low of 19 degrees Fahrenheit. Mostly cloudy, with a low around 19.

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

The 7-day forecast for Illinois City shows highs from 2 to 43 degrees and lows from -9 to 30 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Illinois City, IL this week?

Yes, rain is possible in Illinois City this week. Precipitation chances: Friday (20% chance), Saturday (80% chance), Wednesday (30% chance).

How accurate is the Illinois City weather forecast?

WeatherForYou provides highly accurate Illinois City 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.

Illinois City, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

24°F
Feels Like 17°F

Humidity 96% Dew Point 23°F Wind NNE 6 MPH Gusts 7 Barometer 29.99 in.

Report from a personal weather station 2.2 mi. ENE of central Illinois City
at 1:42 AM Fri, Dec 12, 2025

Point Forecast at a Glance

ThuDec 11

FriDec 12

SatDec 13

80%

-9

SunDec 14

-7

MonDec 15

TueDec 16

WedDec 17

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures dip from 27°F to a low of 2°F mid-week, then warm to 43°F. Some precipitation possible, including both rain and snow.

Climate Context

This week's forecast shows temperatures running 10°F below the historical average for December. Normal highs for this period are around 36°F with lows around 20°F.

This Date in Weather History

1988 - Arctic cold invaded the central and eastern U.S. Sault Ste Marie MI reported a record low of 14 degrees below zero, and International Falls MN was the cold spot in the nation with a low of 25 degrees below zero. Temperatures remained below zero all day over parts of eastern Upper Michigan and northern New England.

Illinois City, IL 7 Day Weather Forecast Details

Thursday Dec 11

Night: Mostly cloudy, with a low around 19. Northeast wind around 5 mph.

Friday Dec 12

Day: A chance of flurries between 10am and 2pm. Mostly cloudy, with a high near 27. Northeast wind 5 to 10 mph becoming west in the afternoon.

Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 6. Wind chill values as low as -10. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Saturday Dec 13

Day: Snow. High near 9. Wind chill values as low as -10. Northwest wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Night: Mostly clear, with a low around -9.

Sunday Dec 14

Day: Sunny and cold, with a high near 2.

Night: Mostly clear, with a low around -7.

Monday Dec 15

Day: Mostly sunny, with a high near 28.

Night: Partly cloudy, with a low around 16.

Tuesday Dec 16

Day: Partly sunny, with a high near 37.

Night: Mostly cloudy, with a low around 30.

Wednesday Dec 17

Day: Mostly cloudy, with a high near 43.

Night: A 30 percent chance of rain. Mostly cloudy, with a low around 30.

Thursday Dec 18

Day: Mostly sunny, with a high near 39.

About Illinois City, IL

Illinois City is an unincorporated community in the U.S. state of Illinois, across the Mississippi River from Muscatine, Iowa. The community straddles Buffalo Prairie Township and Drury Township in Rock Island County, Illinois.

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

How We Provide Better Local Weather

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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