Hail history for Mount Vernon, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Mount Vernon since 1971, with preliminary reports to November 3, 2026.
Readout · Mount Vernon
- Last hail
- May 14, 2018
- 1.25 in, half dollar size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 1.75 in
- golf ball · May 14, 2018
15 reports on 12 days since 1971 · #271 of 483 Iowa 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 May 14, 2018. 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 May 14, 2018, 1.25 in (half dollar size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Mount Vernon logged 10 reports on 7 hail days, about 0.5 reports a year. That is 11% more than the median Iowa town on this site (0.5 a year) and ranks #271 of 483 Iowa cities and towns on this site for all-time reports. Mount Vernon accounts for 4% of the 390 reports filed in Linn County.
0% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Iowa town on this site. The largest hail on record here is 1.75 in (golf ball) on May 14, 2018 near Mt Vernon.
Reports held about level in 2016–2025 (5) compared with 2006–2015 (5). The busiest year was 2018, with 3 reports on 1 day. Hail here peaks in May (33% of reports); 73% fall between April and June.
Reports a year 2006–2025 average
- Mount Vernon 0.5
- Linn County 13.8
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Mount Vernon 7
- Linn County 67
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Mount Vernon 0%
- Linn County 5%
- Median Iowa town on this site 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 3 | 3 | |||||||||||
| 2017 | 2 | 2 |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 14, 2018 | 1.75 ingolf ball | Mt Vernon | Linn | 06:05 local · NCEI |
| Apr 10, 2017 | 1.75 ingolf ball | 3.45 N Mt Vernon | Linn | 01:05 local · NCEI |
| Apr 10, 2017 | 1.75 ingolf ball | 2.07 NW Mt Vernon | Linn | 01:00 local · NCEI |
| Apr 10, 1992 | 1.75 ingolf ball | — | Linn | 18:15 local · NCEI |
| Oct 5, 1981 | 1.75 ingolf ball | — | Linn | 10:20 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 4 27%
- 1–2 in 11 73%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 14, 2018 | 1.25 inhalf dollar | 0.86 NE Mt Vernon | Linn | 06:08 local · NCEI |
| May 14, 2018 | 1.75 ingolf ball | Mt Vernon | Linn | 06:05 local · NCEI |
| May 14, 2018 | 1.00 inquarter | 0.51 W Mt Vernon | Linn | 06:02 local · NCEI |
| Apr 10, 2017 | 1.75 ingolf ball | 3.45 N Mt Vernon | Linn | 01:05 local · NCEI |
| Apr 10, 2017 | 1.75 ingolf ball | 2.07 NW Mt Vernon | Linn | 01:00 local · NCEI |
| Jun 16, 2014 | 1.00 inquarter | 0.69 S Mt Vernon | Linn | 15:44 local · NCEI |
| Jun 8, 2011 | 1.00 inquarter | Mt Vernon | Linn | 20:15 local · NCEI |
| May 22, 2011 | 0.88 innickel | Mt Vernon | Linn | 15:01 local · NCEI |
| Jun 15, 2008 | 0.75 inpenny | 2.07 S Mt Vernon | Linn | 03:50 local · NCEI |
| Mar 31, 2007 | 0.75 inpenny | 2.08 S Mt Vernon | Linn | 16:10 local · NCEI |
| Apr 10, 1992 | 1.75 ingolf ball | — | Linn | 18:15 local · NCEI |
| Jul 6, 1987 | 1.00 inquarter | — | Linn | 16:17 local · NCEI |
Hail history near Mount Vernon
- Martelle 12 km · 12
- Mechanicsville 14 km · 14
- Solon 14 km · 12
- Springville 14 km · 12
- Marion 19 km · 76
- Cedar Rapids 21 km · 149
- Anamosa 24 km · 27
- North Liberty 25 km · 27
Questions about hail in Mount Vernon
How often does it hail in Mount Vernon, Iowa?
15 hail reports have been logged in and within about 5 km (3 miles) of Mount Vernon since 1971. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #271 of 483 Iowa places by number of reports.
When is hail season in Mount Vernon?
Most reports come in May, April, June. May alone accounts for 33% of all reports.
What is the largest hail recorded in Mount Vernon?
1.75 in (golf ball size) on May 14, 2018 near Mt Vernon. 0% 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 May 14, 2018 (1.25 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?
None: there has been no hail report in and within about 5 km (3 miles) of Mount Vernon since November 3, 2021. The last one was on May 14, 2018.
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.