Hail history for Mount Vernon, Illinois
NOAA hail reports in and within about 5 km (3 miles) of Mount Vernon since 1974, with preliminary reports to November 3, 2026.
Readout · Mount Vernon
- Last hail
- Apr 27, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 3 reports
- Largest ever
- 3.50 in
- teacup · May 5, 1999
37 reports on 34 days since 1974 · #28 of 378 Illinois places
Hail map · Mount Vernon
- 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 Mount Vernon is from April 27, 2026. A local roofer can check and document it at no cost.
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What the record says about Mount Vernon
The latest hail report in and around Mount Vernon is from April 27, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.00 in on April 27, 2026.
Over the 20 years 2006–2025, Mount Vernon logged 23 reports on 21 hail days, about 1.1 reports a year. That is about twice the median Illinois town on this site (0.5 a year) and ranks #28 of 378 Illinois cities and towns on this site for all-time reports. Mount Vernon accounts for 40% of the 92 reports filed in Jefferson County.
11% of reports with a size were 2 inches (hen egg) or larger, against 4% for the median Illinois town on this site. The largest hail on record here is 3.50 in (teacup) on May 5, 1999 near Mt Vernon.
Reports were down 65% in 2016–2025 (6) compared with 2006–2015 (17). The busiest year was 2012, with 5 reports on 3 days. Hail here peaks in April (38% of reports); 76% fall between April and June.
Reports a year 2006–2025 average
- Mount Vernon 1.1
- Jefferson County 2.8
- Median Illinois town on this site 0.5
Hail days 2006–2025
- Mount Vernon 21
- Jefferson County 46
- Median Illinois town on this site 8
Share 2 in or larger of sized reports
- Mount Vernon 11%
- Jefferson County 7%
- Median Illinois town on this site 4%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 1 | 1 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 27, 2026 | 1 | 1.00 in | — |
| Mar 30, 2025 | 1 | 1.00 in | — |
| Jul 29, 2024 | 1 | 0.88 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 5, 1999 | 3.50 inteacup | Mt Vernon | Jefferson | $50K | 13:10 local · NCEI |
| Apr 24, 2003 | 2.75 inbaseball | Mt Vernon | Jefferson | — | 16:55 local · NCEI |
| Apr 3, 1989 | 2.00 inhen egg | — | Jefferson | — | 15:05 local · NCEI |
| Apr 3, 1989 | 2.00 inhen egg | — | Jefferson | — | 14:50 local · NCEI |
| Apr 3, 2007 | 1.75 ingolf ball | 5 W Mt Vernon | Jefferson | — | 13:44 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 17 46%
- 1–2 in 16 43%
- 2 in + 4 11%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 27, 2026 | 1.00 inquarter | (Mvn)mt Vernon Arpt | Jefferson | 20:20 local · NCEI |
| Mar 30, 2025 | 1.00 inquarter | 2.1 N Bakerville | Jefferson | 15:15 local · NCEI |
| Jul 29, 2024 | 0.88 innickel | 1.43 SW Mt Vernon | Jefferson | 22:10 local · NCEI |
| Jun 15, 2018 | 1.50 inping pong ball | Mt Vernon | Jefferson | 17:16 local · NCEI |
| Apr 29, 2017 | 0.75 inpenny | 1 N Mt Vernon | Jefferson | 17:34 local · NCEI |
| Apr 26, 2017 | 0.75 inpenny | 3 SSW Mt Vernon | Jefferson | 14:14 local · NCEI |
| May 1, 2016 | 1.00 inquarter | Mt Vernon | Jefferson | 18:15 local · NCEI |
| Apr 9, 2015 | 1.00 inquarter | Mt Vernon | Jefferson | 20:51 local · NCEI |
| Jun 4, 2014 | 0.88 innickel | 3 S Mt Vernon | Jefferson | 14:35 local · NCEI |
| Apr 27, 2014 | 0.75 inpenny | Mt Vernon | Jefferson | 11:42 local · NCEI |
| May 20, 2013 | 1.00 inquarter | Mt Vernon | Jefferson | 23:25 local · NCEI |
| May 20, 2012 | 1.00 inquarter | Mt Vernon | Jefferson | 16:45 local · NCEI |
Hail history near Mount Vernon
- Woodlawn 10 km · 12
- Sesser 28 km · 20
- Centralia 29 km · 24
- Wayne City 29 km · 10
- Benton 34 km · 13
- Salem 35 km · 21
- Nashville 41 km · 26
- McLeansboro 41 km · 24
Questions about hail in Mount Vernon
How often does it hail in Mount Vernon, Illinois?
37 hail reports have been logged in and within about 5 km (3 miles) of Mount Vernon since 1974. Over the 20 years 2006–2025 that averages 1.1 reports a year. That ranks #28 of 378 Illinois places by number of reports.
When is hail season in Mount Vernon?
Most reports come in April, May, March. April alone accounts for 38% of all reports.
What is the largest hail recorded in Mount Vernon?
3.50 in (teacup size) on May 5, 1999 near Mt Vernon. 11% of reports here were 2 inches or larger.
When did it last hail in Mount Vernon?
The most recent report in this data is from April 27, 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 Mount Vernon had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was April 27, 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.