Will County was hit as recently as 2026-07-03, 28 days ago. Will County is hit in most years, and usually several times over. The largest stone on record here is 3 inches, a teacup and 3 times the National Weather Service's 1 inch severe criterion, reported on 2026-03-10 near Bolingbrook.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Illinois. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-03, around Rockdale. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Will County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 56 separate hail days here since 2010 -- 3.3 a year over 17 years of record. Those days carry 161 separate reports between them, two or three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2019, with 7 hail days. The last five years track the long-run rate, with 19 days since 2022.
Most hail here stays under 2 inches: only 2 of the 56 days on record passed it, 4%, the last on 2026-03-10. Those big days do not follow the county's usual calendar: most of them fall in March, not June. 14 of the 56 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Romeoville -- 13 of the county's 56 hail days -- then Plainfield (12), Bolingbrook (9), Lockport (7) and Beecher (6). Beyond those, NOAA names Shorewood, New Lenox, Joliet, Channahon, Homer Glen, Peotone, Crete, Rockdale and Crest Hill on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Romeoville | 7 | 1.75″ |
| Bolingbrook | 6 | 3.00″ |
| Lockport | 4 | 2.00″ |
| Plainfield | 4 | 1.75″ |
| 4 Sw Plainfield | 4 | 1.25″ |
The season runs February through July: 46 of the 56 hail days on record fall in those 6 months (82%). June is the single busiest month, with 14 of them (25%). That peak sits inside the window rather than at either end. Hail has also been reported in August, September, October and November, outside that window. January and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| February | 3 |
| March | 8 |
| April | 6 |
| May | 9 |
| June | 14 |
| July | 6 |
| August | 2 |
| September | 4 |
| October | 2 |
| November | 2 |
That day put 2 reports on the map, the biggest 1 inch near Rockdale. 5 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-03 | 1.00″ | 2 |
| 2026-03-31 | 1.75″ | 11 |
| 2026-03-30 | 1.25″ | 3 |
| 2026-03-26 | 1.00″ | 2 |
| 2026-03-10 | 3.00″ | 11 |
| 2025-09-13 | 1.00″ | 1 |
| 2025-03-19 | 1.00″ | 1 |
| 2024-05-24 | 1.00″ | 3 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 3 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: DuPage County (33 hail days), Kendall County (16) and Grundy County (14). Will County takes more hail than any of them.
DuPage County · Kendall County · Grundy County
Back to the Illinois hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Will County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.