What is today's weather forecast for Fort Dearborn, IL?

Today's forecast for Fort Dearborn shows a high of 20 degrees and a low of 10 degrees Fahrenheit. Sunny, with a high near 20.

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

The 7-day forecast for Fort Dearborn shows highs from 20 to 35 degrees and lows from 10 to 26 degrees Fahrenheit. Expect precipitation on 6 days with chances of 20% or higher.

Will it rain in Fort Dearborn, IL this week?

Yes, rain is possible in Fort Dearborn this week. Precipitation chances: Friday (30% chance), Saturday (40% chance), Sunday (30% chance), Monday (50% chance), Tuesday (50% chance), Wednesday (50% chance).

How accurate is the Fort Dearborn weather forecast?

WeatherForYou provides highly accurate Fort Dearborn 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.

Fort Dearborn, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

12°F
Feels Like 4°F

Humidity 69% Dew Point 4°F Wind NNW 5 MPH Gusts 8 Barometer 30.32 in.

Report from a MADIS/MESONET weather station 2.7 mi. W of central Fort Dearborn
at 4:37 AM Thu, Dec 4, 2025

Point Forecast at a Glance

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

30%

MonDec 8

TueDec 9

50%

WedDec 10

50%

7-Day Temperature Trend

Week Ahead Summary

Warming trend through the week with high temperatures climbing from 20°F to 35°F. Unsettled weather expected with snow likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 7°F below the historical average for December. Normal highs for this period are around 37°F with lows around 23°F.

This Date in Weather History

1972 - Winds gusting to 70 mph sent the temperature at Livingston, MT, plunging from 52 degrees to 18 degrees in just twenty minutes.

Fort Dearborn, IL 7 Day Weather Forecast Details

Thursday Dec 4

Day: Sunny, with a high near 20. Wind chill values as low as -4. North northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

Night: Partly cloudy, with a low around 10. Wind chill values as low as -6. South southwest wind 5 to 15 mph.

Friday Dec 5

Day: Partly sunny, with a high near 30. Wind chill values as low as -2. South southwest wind around 15 mph, with gusts as high as 20 mph.

Night: A 30 percent chance of snow, mainly before midnight. Cloudy, with a low around 26. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Saturday Dec 6

Day: Mostly cloudy, with a high near 31. West wind 5 to 10 mph, with gusts as high as 15 mph.

Night: A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 23.

Sunday Dec 7

Day: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 31.

Night: Mostly cloudy, with a low around 18.

Monday Dec 8

Day: Partly sunny, with a high near 26.

Night: A chance of snow. Mostly cloudy, with a low around 20.

Tuesday Dec 9

Day: A chance of snow. Mostly cloudy, with a high near 34.

Night: A chance of snow. Cloudy, with a low around 26.

Wednesday Dec 10

Day: Rain and snow likely. Mostly cloudy, with a high near 35.

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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