Kane County was hit as recently as 2026-06-24, 37 days ago. Kane County is hit in most years, and usually several times over. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2025-06-08 near Batavia.
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 2026-06-24, around Algonquin. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Kane 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 43 separate hail days here since 2010 -- 2.5 a year over 17 years of record. Those days carry 137 separate reports between them, better than three on a typical one. No year since 2010 has gone by without at least one. The busiest single year was 2026, with 4 hail days. The last five years track the long-run rate, with 10 days since 2022.
Most hail here stays under 2 inches: only 4 of the 43 days on record passed it, 9%, the last on 2025-06-08. Those big days do not follow the county's usual calendar: most of them fall in May, not April. Golf-ball size is rarer still: 1.75 inches or more on 7 of the 43 days.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Aurora -- 10 of the county's 43 hail days -- then Sugar Grove (8), North Aurora (6), Batavia (5) and Elgin (5). Beyond those, NOAA names Big Rock, Elburn, Maple Park, Geneva, St. Charles, Kaneville, Hampshire, Montgomery and Carpentersville on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Aurora | 7 | 1.75″ |
| Batavia | 4 | 1.75″ |
| Elgin | 4 | 1.50″ |
| 3 SE Big Rock | 3 | 1.75″ |
| North Aurora | 3 | 1.75″ |
The season runs April through August: 36 of the 43 hail days on record fall in those 5 months (84%). April is the single busiest month, with 10 of them (23%). That peak opens the window: the season starts at its worst and eases off from there. October and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| January | 1 |
| February | 1 |
| March | 2 |
| April | 10 |
| May | 6 |
| June | 10 |
| July | 6 |
| August | 4 |
| September | 2 |
| November | 1 |
That day put 3 reports on the map, the biggest 1 inch near Algonquin. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-24 | 1.00″ | 3 |
| 2026-04-14 | 1.00″ | 1 |
| 2026-03-30 | 1.25″ | 5 |
| 2026-03-10 | 1.25″ | 3 |
| 2025-06-08 | 2.50″ | 16 |
| 2024-02-27 | 1.00″ | 2 |
| 2023-04-20 | 1.00″ | 1 |
| 2023-04-04 | 2.50″ | 19 |
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 2.5 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 De Kalb County (20). Kane County takes more hail than any of them.
DuPage County · Kendall County · De Kalb 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, Kane County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.