Hail Reports in Joliet, Illinois — Last 90 Days

Joliet is not hail alley, but it is not exempt either — the area averages about 4 hail-producing storms a year. When a cell does track over the county, the reports below tell you the date, the stone size, and how close it came.

Joliet's Storm-Climate Context

Joliet sits in the Chicago metro corridor where continental air masses drive severe weather year-round. The recorded high of 109 F and low of -26 F in January bracket an extreme temperature range that stresses every roofing material through repeated expansion and contraction. Average annual snowfall of 16.9 inches adds seasonal snow load and accelerates freeze-thaw cycling in membrane seams and flashing joints. Spring and summer bring the thunderstorm activity common to northeastern Illinois, with hail granule loss and wind-driven rain penetration the primary acute risks. The freeze-thaw cycle in particular degrades asphalt shingle tabs and can force water under insufficiently sealed flashing, shortening effective roof life well below manufacturer ratings.

Joliet recorded 150,362 residents in the 2020 census, ranking it the third most populous city in Illinois. The city has evolved from a steel and manufacturing hub into a commuter suburb anchored by large logistics and healthcare employers. Amazon employs roughly 3,500 workers locally, while AMITA Health Saint Joseph Medical Center supports about 3,023 jobs. Will County government adds 2,200 more. This stable, large-employer base sustains homeownership and steady demand for residential roof replacement, while the ongoing warehouse and distribution buildout drives commercial roofing work.

Hail Events Near Joliet by Date

August 9, 2026 — 2 reports, hail up to 1.00″ (quarter size)

July 28, 2026 — 1 report, hail up to 2.00″ (golf-ball size)

July 27, 2026 — 39 reports, hail up to 3.00″ (baseball size) Largest in 90 days

July 3, 2026 — 2 reports, hail up to 1.00″ (quarter size)

Preliminary Local Storm Reports from the NOAA Storm Prediction Center. Sizes are reported hailstone diameters; times are UTC. Reports can be added or corrected for about a day after each event. A quiet page section ≠ no hail — smaller or unreported events happen. The closest report in this window landed 1.0 miles from Joliet's center.

Circle positions are the NOAA SPC report coordinates; tap a circle for the date and hail size.

Hail size: < 1″ 1–1.75″ ≥ 2″ not recorded

How Severe Was It? The NWS Yardstick, Applied to Joliet's Reports

The National Weather Service calls hail severe at 1″ (quarter size) and significant at 2″ (hen-egg size). Scoring the 44 Joliet-area reports (filed in Cook, DuPage, Grundy, Kendall, Will Counties) against that scale: 8 reached the significant 2″+ tier — stones that crack shingles and break skylights outright, not just bruise them, plus 36 in the severe 1″–2″ band. Damage at these sizes is rarely visible from the ground but is typically covered by homeowners insurance when documented promptly.

What to Do If Your Roof Was in the Hail Path

1. Do a ground-level walk-around. Hail is rare enough around Joliet that most homeowners never think to check — look for granules collecting at downspouts, dented gutters or screens, and battered plants after the August 9, 2026 reports above. Stay off the roof itself.
2. Photograph anything suspicious with dates. Even minor-looking marks matter later: this NOAA log plus dated photos connect the damage to a covered storm event instead of "gradual wear", which insurers exclude.
3. Book a free inspection rather than guessing. Bruised shingles and granule loss are invisible from the ground; a written scope from a local roofer settles whether there is a claim at all.
4. Only involve the insurer once you know the scope. If the inspection finds nothing, you have lost nothing; if it finds damage, file within your policy's window while the event date is easy to prove.
5. Bring the written scope to the adjuster. Full walkthrough in the roof insurance claim guide.

Hail History in Joliet — the 10-Year Picture

NOAA's 10-year archive shows 76 hail events in Joliet's county — roughly 8 per year — with hail up to 1.75″. For comparison, the last 90 days alone brought 4 hail days within 25 miles of Joliet (this page's window). Joliet averages roughly 4 hail-producing storms per year. In a market with repeat hail, impact-resistant Class 4 shingles often pay for themselves through insurer premium discounts — worth discussing with a Joliet roofer if a recent event tips you into a replacement. Check your own address on the hail risk lookup.

Compared to the Illinois county median of 57 hail events over 10 years, Joliet's county runs 1.3× above average — an exposure level that pushes local insurers toward higher wind-and-hail premium tiers and makes impact-resistant shingles a cost-effective upgrade.

Joliet's County, Year by Year (NOAA Archive)

NOAA Storm Events archive, Joliet's county. Years with no row logged no hail events.

The county's busiest hail year in the archive was 2017 (21 recorded events), while the largest stone on record — 1.75″ — fell in 2024. If your roof predates 2017 and has never had a documented inspection, assume it has taken at least one unexamined hit.

Hail in Joliet — Questions Homeowners Ask

Check Your Own ZIP in Joliet

The county-level history above averages over the whole area. For a score tied to your address, run your ZIP through the hail risk lookup — Joliet ZIP codes include 60451, 60452, 60474, 60494, 60453.

Joliet Neighborhoods — Hail Exposure Varies by Area

Hail paths track with storm cell movement, not city limits. If you're in Central Park, Northwest Park, Joliet Estates, River Ridge or Sunrise District, check your specific street against the report locations above — distance from Joliet's center is listed for each report.

More Resources

Roofing contractors in Joliet · Storm damage repair in Joliet · Insurance claim guide · Roof replacement costs in Joliet · Emergency roof repair