Hail history for Boone County, Illinois
Every NOAA hail report filed in Boone County since 1963, with preliminary National Weather Service reports to November 3, 2026.
Readout · Boone County
- Last hail
- Apr 15, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 6
- since Nov 3, 2021 · 14 reports
- Largest ever
- 2.00 in
- hen egg · Apr 12, 2014
65 reports on 46 days since 1963 · #74 of 103 Illinois counties
Hail map · Boone County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Boone County is from April 15, 2026. A local roofer can check and document it at no cost.
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What the record says about Boone County
The latest hail report in Boone County is from April 15, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 6 separate hail days; the biggest stones in that time were 1.75 in on April 14, 2026.
Over the 20 years 2006–2025, Boone County logged 42 reports on 31 hail days, about 2.1 reports a year. That is 19% less than the median Illinois county (2.6 a year) and ranks #74 of 103 Illinois counties for all-time reports. Boone County holds 1% of all 12,418 hail reports in Illinois.
2% of reports with a size were 2 inches (hen egg) or larger, against 5% for the median Illinois county. The largest hail on record here is 2.00 in (hen egg) on April 12, 2014 near 1.68 NNW Belvidere.
Reports were down 32% in 2016–2025 (17) compared with 2006–2015 (25). The busiest year was 2026, with 7 reports on 2 days. Hail here peaks in April (26% of reports); 66% fall between April and June.
Reports a year 2006–2025 average
- Boone County 2.1
- Median Illinois county 2.6
Hail days 2006–2025
- Boone County 31
- Median Illinois county 34
Share 2 in or larger of sized reports
- Boone County 2%
- Median Illinois county 5%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 7 | 7 | |||||||||||
| 2025 | 2 | 2 | 4 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 2 | 2 | |||||||||||
| 2021 | 1 | 1 | 2 | ||||||||||
| 2020 | 2 | 1 | 3 | ||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 1 | 2 | 1 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 15, 2026 | 1 | 1.00 in | — |
| Apr 14, 2026 | 6 | 1.75 in | — |
| Aug 16, 2025 | 2 | 1.00 in | — |
| May 15, 2025 | 2 | 1.00 in | — |
| Jun 29, 2023 | 1 | 1.00 in | — |
| Apr 30, 2022 | 2 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Apr 12, 2014 | 2.00 inhen egg | 1.68 NNW Belvidere | $250K | 09:15 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 0.69 N Belvidere | — | 19:56 local · NCEI |
| Sep 7, 2021 | 1.75 ingolf ball | 0.51 W Candlewick Lake | — | 11:54 local · NCEI |
| Jul 13, 2015 | 1.75 ingolf ball | 2.16 NNW Capron | — | 20:20 local · NCEI |
| Jun 8, 2011 | 1.75 ingolf ball | 3 S Belvidere | — | 21:22 local · NCEI |
Size of every report
- Under 1 in 16 25%
- 1–2 in 48 74%
- 2 in + 1 2%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Apr 15, 2026 | 1.00 inquarter | 0.51 E Poplar Grove | 19:45 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.86 SE Poplar Grove Airport | 20:05 local · NCEI |
| Apr 14, 2026 | 1.25 inhalf dollar | 4.15 E Poplar Grove Airport | 20:05 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.51 E Poplar Grove | 20:03 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.51 E Garden Prairie | 20:00 local · NCEI |
| Apr 14, 2026 | 1.50 inping pong ball | 0.51 E Belvidere | 19:56 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 0.69 N Belvidere | 19:56 local · NCEI |
| Aug 16, 2025 | 1.00 inquarter | 1.68 ESE Belvidere | 14:51 local · NCEI |
| Aug 16, 2025 | 1.00 inquarter | 1.38 N Belvidere | 14:51 local · NCEI |
| May 15, 2025 | 1.00 inquarter | 0.86 NW Belvidere | 17:31 local · NCEI |
| May 15, 2025 | 1.00 inquarter | Caledonia | 16:06 local · NCEI |
| Jun 29, 2023 | 1.00 inquarter | 1 W Belvidere | 02:47 local · NCEI |
Cities and towns in Boone County
| Place | Reports | Largest |
|---|---|---|
| Belvidere | 35 | 2.75 in |
| Poplar Grove | 11 | 1.50 in |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Capron | 7 | 7 | Jul 13, 2015 |
| Garden Prairie | 4 | 4 | Apr 14, 2026 |
| Caledonia | 3 | 3 | May 15, 2025 |
| Candlewick Lake | 1 | 1 | Sep 7, 2021 |
| Timberlane | 1 | 1 | Apr 7, 2020 |
Questions about hail in Boone County
How often does it hail in Boone County, Illinois?
65 hail reports have been logged in Boone County since 1963. Over the 20 years 2006–2025 that averages 2.1 reports a year. That ranks #74 of 103 Illinois counties by number of reports.
When is hail season in Boone County?
Most reports come in April, May, June. April alone accounts for 26% of all reports.
What is the largest hail recorded in Boone County?
2.00 in (hen egg size) on April 12, 2014 near 1.68 NNW Belvidere. 2% of reports here were 2 inches or larger.
When did it last hail in Boone County?
The most recent report in this data is from April 15, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Boone County had in the last five years?
6 separate days with hail reports since November 3, 2021, adding up to 14 reports. The most recent was April 15, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.