Hail history for McHenry County, Illinois
Every NOAA hail report filed in McHenry County since 1972, with preliminary National Weather Service reports to November 3, 2026.
Readout · McHenry County
- Last hail
- Jun 24, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 10
- since Nov 3, 2021 · 21 reports
- Largest ever
- 2.75 in
- baseball · May 2, 2018
196 reports on 92 days since 1972 · #18 of 103 Illinois counties
Hail map · McHenry County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Concerned about your roof after hail?
Send a request to Moxisync Labs for review. The latest hail report in McHenry County is from June 24, 2026. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.
Phone line opening soon
What the record says about McHenry County
The latest hail report in McHenry County is from June 24, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 10 separate hail days; the biggest stones in that time were 2.50 in on August 27, 2024.
Over the 20 years 2006–2025, McHenry County logged 143 reports on 59 hail days, about 7.2 reports a year. That is 2.8 times the median Illinois county (2.6 a year) and ranks #18 of 103 Illinois counties for all-time reports. McHenry County holds 2% of all 12,418 hail reports in Illinois.
3% 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 2.75 in (baseball) on May 2, 2018 near Richmond.
Reports were down 71% in 2016–2025 (32) compared with 2006–2015 (111). The busiest year was 2011, with 20 reports on 5 days. Hail here peaks in May (24% of reports); 59% fall between April and June.
Reports a year 2006–2025 average
- McHenry County 7.2
- Median Illinois county 2.6
Hail days 2006–2025
- McHenry County 59
- Median Illinois county 34
Share 2 in or larger of sized reports
- McHenry County 3%
- Median Illinois county 5%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | 4 | 6 | ||||||||||
| 2025 | 3 | 3 | |||||||||||
| 2024 | 1 | 3 | 5 | 9 | |||||||||
| 2023 | 1 | 1 | 2 | ||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 5 | 5 | |||||||||||
| 2020 | 2 | 2 | |||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 2 | 2 | |||||||||||
| 2017 | 2 | 2 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 24, 2026 | 4 | 1.50 in | — |
| Apr 15, 2026 | 1 | 1.00 in | — |
| Apr 14, 2026 | 1 | 1.00 in | — |
| Aug 16, 2025 | 3 | 1.50 in | — |
| Aug 27, 2024 | 5 | 2.50 in | — |
| Jun 25, 2024 | 3 | 1.00 in | — |
| Feb 27, 2024 | 1 | 1.00 in | — |
| Jun 29, 2023 | 1 | 1.00 in | — |
| Apr 4, 2023 | 1 | 1.00 in | — |
| Jul 22, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| May 2, 2018 | 2.75 inbaseball | Richmond | 20:12 local · NCEI |
| Jul 20, 2013 | 2.75 inbaseball | Huntley | 18:55 local · NCEI |
| Aug 27, 2024 | 2.50 intennis ball | 2.07 S Woodstock | 16:29 local · NCEI |
| May 2, 2018 | 2.25 inhen egg | 1.22 SW Spring Grove | 20:19 local · NCEI |
| Apr 12, 2014 | 2.00 inhen egg | 1.24 SW Algonquin | 10:05 local · NCEI |
Size of every report
- Under 1 in 79 41%
- 1–2 in 110 56%
- 2 in + 6 3%
- No size 1
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 24, 2026 | 1.00 inquarter | 1.33 SSW Lake In The Hills | 16:56 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | Algonquin | 16:54 local · NCEI |
| Jun 24, 2026 | 1.50 inping pong ball | 1.69 ENE Huntley | 16:41 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | 0.9 NE Huntley | 16:39 local · NCEI |
| Apr 15, 2026 | 1.00 inquarter | 1.23 SE Big Foot | 02:06 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.86 NE Huntley | 20:34 local · NCEI |
| Aug 16, 2025 | 1.25 inhalf dollar | 0.86 NW Fox River Grove | 15:05 local · NCEI |
| Aug 16, 2025 | 1.50 inping pong ball | 1.23 SW Port Barrington | 15:04 local · NCEI |
| Aug 16, 2025 | 1.00 inquarter | 0.86 SE Woodstock | 14:45 local · NCEI |
| Aug 27, 2024 | 1.00 inquarter | 0.51 W Mchenry | 17:09 local · NCEI |
| Aug 27, 2024 | 2.50 intennis ball | 2.07 S Woodstock | 16:29 local · NCEI |
| Aug 27, 2024 | 1.75 ingolf ball | 1.5 S Woodstock | 16:29 local · NCEI |
Cities and towns in McHenry County
| Place | Reports | Largest |
|---|---|---|
| Woodstock | 28 | 2.50 in |
| Crystal Lake | 27 | 1.75 in |
| Marengo | 27 | 1.75 in |
| Huntley | 22 | 2.75 in |
| Lake in the Hills | 18 | 1.50 in |
| McHenry | 14 | 1.75 in |
| Harvard | 10 | 1.75 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 |
|---|---|---|---|
| Algonquin | 9 | 6 | Jun 24, 2026 |
| Cary | 8 | 7 | Aug 16, 2025 |
| Spring Grove | 6 | 4 | Sep 7, 2021 |
| Island Lake | 4 | 4 | Jul 22, 2022 |
| Greenwood | 3 | 3 | Aug 2, 2015 |
| Lakemoor | 3 | 3 | Jul 23, 2022 |
| Richmond | 3 | 3 | May 2, 2018 |
| Union | 3 | 3 | May 11, 2014 |
| Wonder Lake | 3 | 3 | Jul 16, 2017 |
| Hartland | 2 | 2 | Apr 10, 2017 |
| Johnsburg | 2 | 2 | Sep 7, 2021 |
| Chemung | 1 | 1 | Jun 20, 2008 |
| Hebron | 1 | 1 | Jun 4, 1975 |
| Lake Barrington | 1 | 1 | May 26, 2012 |
| Prairie Grove | 1 | 1 | May 18, 2000 |
Questions about hail in McHenry County
How often does it hail in McHenry County, Illinois?
196 hail reports have been logged in McHenry County since 1972. Over the 20 years 2006–2025 that averages 7.2 reports a year. That ranks #18 of 103 Illinois counties by number of reports.
When is hail season in McHenry County?
Most reports come in May, April, June. May alone accounts for 24% of all reports.
What is the largest hail recorded in McHenry County?
2.75 in (baseball size) on May 2, 2018 near Richmond. 3% of reports here were 2 inches or larger.
When did it last hail in McHenry County?
The most recent report in this data is from June 24, 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 McHenry County had in the last five years?
10 separate days with hail reports since November 3, 2021, adding up to 21 reports. The most recent was June 24, 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.