HailHistory › Hail by county › Illinois › Boone County
Illinois · county FIPS 17007
Hail history for Boone County, IL
Boone County has 65 recorded hail events in the NOAA Storm Events Database — 49 of them 1″ or larger and 1 at 2″ or larger. The largest on record: 2.0″ (hen egg) on April 12, 2014.
Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.
When it hails in Boone County
Recorded events by month, 1950–present. The amber bar marks Boone County's peak: April.
Most recent recorded events
| Date | Size | Comparable to |
|---|---|---|
| 1.0″ | Quarter | |
| 1.25″ | Half dollar | |
| 1.0″ | Quarter | |
| 1.0″ | Quarter | |
| 1.0″ | Quarter | |
| 1.75″ | Golf ball | |
| 1.5″ | Ping-pong ball | |
| 1.0″ | Quarter |
Looking for a specific storm? Use the did-it-hail date lookup for Boone County.
From the storm reports
Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).
· 1.0″ (quarter)
Multiple quarter size hail reports were received from Belvidere.
· 2.0″ (hen egg)
Hail to two inches in diameter was estimated on Route 76 near Poplar Grove Airport. Shopping centers in the area reported heavy damage from hail. A Walmart had 129 skylights damaged or broken while a ShopKo was also damaged by the hail.
· 1.75″ (golf ball)
Hail from marble size to golfball size was reported.
Events by decade
| 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|
| 0 | 1 | 1 | 3 | 3 | 15 | 23 | 19 |
The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.
Questions about hail in Boone County
Has it ever hailed in Boone County?
Yes — 65 hail events have been recorded for Boone County, IL in the NOAA Storm Events Database since 1963, including 49 of 1″ (quarter size) or larger.
When did it last hail in Boone County?
The most recent recorded hail event for Boone County, IL is April 15, 2026, with 1.0″ (quarter) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.
What is the largest hail ever recorded in Boone County?
2.0″ (hen egg), recorded on April 12, 2014. Hail that size meets or exceeds the National Weather Service severe threshold. See how big that really is on the actual-size hail chart.
Does a recorded hail event mean my roof was damaged?
No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.
More Illinois hail history
- Cook County 643
- Will County 359
- St. Clair County 319
- Sangamon County 314
- Madison County 310
- DuPage County 255
Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.