Chicago alone logged 109,112 crashes in 20251. The first month of 2026 added another 9,461 on top of that, according to thatcarhitme.com's own crash-data tracking2, and January sits squarely inside the stretch when Illinois gets hit hardest: the Chicago area averages 38.4 inches of snow a year, with January (11.3 inches) and February (10.7 inches) the two heaviest months, according to NOAA's 1991-2020 climate normals for the area3. Every one of those storms produces a wave of spinouts, rear-end pileups, and parking-lot falls, and Illinois law treats a lot of that differently than drivers expect.
Illinois is an at-fault state4, and weather doesn't change that. There's no "act of God" carve-out for snow or ice built into the law. What changes is how fault gets proven and divided up.
Icy roads aren't a legal excuse
Illinois' basic speed statute, 625 ILCS 5/11-601(a), doesn't just cap how fast you can go. It requires drivers to slow down when "special hazards exist... by reason of weather or highway conditions," and it says plainly that driving at or under the posted limit doesn't excuse a driver from that duty5. In practice, a driver doing 35 in a 35 zone who loses control on black ice can still be cited and found negligent, because the legal standard is what's reasonable for the conditions, not what the sign says. The same logic drives most winter rear-end cases: 625 ILCS 5/11-710 requires drivers to leave following distance that's "reasonable and prudent" given the condition of the road, not a fixed number of car lengths6. Rear-ending someone because the roads were slick is rarely a defense. It's usually the evidence against the driver who hit you.
That distinction matters because Illinois uses modified comparative negligence with a 51% bar7. Get found 50% or less at fault for a winter crash and your recovery is reduced by your share. Cross 51% and you recover nothing. Insurance adjusters lean on "everyone was sliding around out there" language after storms specifically because it can push a claimant's share of fault past that line, so how the crash gets documented carries extra weight in a snow crash: dash-cam footage, the responding officer's notes on road conditions, witness accounts of the other driver's speed. An attorney who handles Illinois weather crashes regularly can help sort out whose share tips which way, and the legal directory is a place to start looking for one.
The government's immunity for snow and ice
You generally can't sue a city or the state just because a road wasn't plowed or salted fast enough. The Local Governmental and Governmental Employees Tort Immunity Act, 745 ILCS 10/3-105, gives municipalities and IDOT broad immunity for injuries caused by "the effect of weather conditions as such," and the statute names ice and snow specifically8. That immunity doesn't cover physical damage or deterioration the weather causes to the road itself, like a pothole that opens up after a freeze-thaw cycle, and it doesn't erase the government's separate duty to use ordinary care in maintaining its property8. For context: IDOT runs more than 1,221 winter routes statewide and only spreads salt when pavement is at or above 15 degrees; below 5 degrees, salt stops working and crews switch tactics9. That's useful for understanding why a treated road can still be treacherous, but it isn't the basis for a claim against the state.
Slipping and falling before you even get in the car
A lot of winter injury claims never involve a moving car. They happen in parking lots and on sidewalks, on the way to or from one. Illinois' baseline rule here goes back to the state Supreme Court's 1953 decision in Riccitelli v. Sternfeld: property owners generally owe no duty to clear natural accumulations of snow or ice, meaning snow or ice that forms straight from the weather10. The Snow and Ice Removal Act, 745 ILCS 75/1-2, builds on that for homeowners specifically. A residential owner, lessor, or occupant who removes or tries to remove snow or ice from the sidewalk next to their home isn't liable for injuries from that sidewalk's icy condition unless the conduct was willful or wanton11. That protection is narrow: it covers only residential property, only the sidewalk abutting it, and none of a driveway, parking lot, or commercial property.
The bigger exception is unnatural accumulation, ice or snow made worse by something the property owner did or failed to fix rather than the storm itself. The Illinois Supreme Court drew that line in Murphy-Hylton v. Lieberman Management Services, a 2016 case where a condo resident fractured her leg, knee, and hip after slipping on ice that had formed because of bad drainage and misdirected downspouts. The court held the Snow and Ice Removal Act's immunity didn't reach that claim at all, since the ice wasn't purely a product of the weather12. Commercial properties get no protection from the Act to begin with and owe visitors ordinary reasonable care, so a fall in a poorly graded or carelessly salted store lot is a very different case from a fall on a neighbor's sidewalk.
Coverage and deadlines that don't pause for weather
Multi-car pileups in whiteout conditions often end with a driver who fled, was never identified, or didn't carry enough coverage to pay for what happened. Illinois requires uninsured motorist bodily injury coverage that matches your own liability limits, and underinsured motorist coverage that defaults to matching your own bodily injury limits unless you reject it in writing13. Both matter more in winter, when hit-and-run spinouts and chain-reaction crashes are common.
The filing clock doesn't slow down for snow either. Illinois gives you two years from the crash date to bring a personal injury claim under 735 ILCS 5/13-20214, and five years for property damage alone15. If your car came out of a winter wreck with a lower resale value even after a solid repair, that's a separate diminished value claim worth looking into. Minimum liability coverage in Illinois is still 25/50/20, unchanged since 201516, which often isn't enough to cover a serious injury from a multi-vehicle pileup, one more reason UM/UIM coverage matters in a state that sees this much snow.
Start any winter claim with an official crash report. From there, the questions above, whose fault it really was, whether the government or a property owner owed any duty at all, and what coverage applies, decide whether a claim is worth pursuing and how much it's worth.
This is general information, not legal advice.
Sources
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thatcarhitme.com, Chicago Year-over-Year Crash Report, 2025 vs 2024: https://thatcarhitme.com/crash-data/illinois/chicago/2025-annual-report
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thatcarhitme.com, Chicago Crash Report, January 2026: https://thatcarhitme.com/crash-data/illinois/chicago/january-2026-report
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NOAA/NWS Chicago Climate Normals 1991-2020: https://www.weather.gov/lot/chicago_normals
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Illinois Dept. of Insurance, Comparative Negligence: https://idoi.illinois.gov/consumers/consumerinsurance/comparative-negligence.html
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625 ILCS 5/11-601: https://www.ilga.gov/documents/legislation/ilcs/documents/062500050K11-601.htm
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625 ILCS 5/11-710: https://www.ilga.gov/documents/legislation/ilcs/documents/062500050K11-710.htm
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735 ILCS 5/2-1116: https://www.ilga.gov/legislation/ilcs/documents/073500050K2-1116.htm
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745 ILCS 10/3-105, Local Governmental and Governmental Employees Tort Immunity Act: https://www.ilga.gov/documents/legislation/ilcs/documents/074500100K3-105.htm
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Illinois Department of Transportation, Winter Road Conditions: https://idot.illinois.gov/travel-and-maps/roadways/winter-weather-operations/winter-road-conditions.html
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Riccitelli v. Sternfeld, 1 Ill. 2d 133, 115 N.E.2d 288 (1953): https://www.courtlistener.com/opinion/1991681/riccitelli-v-sternfeld/
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745 ILCS 75/1-2, Snow and Ice Removal Act: https://www.ilga.gov/Legislation/ILCS/Articles?ActID=2084&ChapterID=58
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Murphy-Hylton v. Lieberman Management Services, Inc., 2016 IL 120394: https://www.illinoiscourts.gov/Resources/284e7d27-4798-4cf3-86cb-bda8507b1df9/120394.pdf
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215 ILCS 5/143a and 5/143a-2: https://www.ilga.gov/legislation/ilcs/fulltext?DocName=021500050K143a
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735 ILCS 5/13-202: https://www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=073500050K13-202
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735 ILCS 5/13-205: https://www.ilga.gov/documents/legislation/ilcs/documents/073500050k13-205.htm
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625 ILCS 5/7-203: https://www.ilga.gov/legislation/ilcs/fulltext?DocName=062500050K7-203