Hail history for Lyon County, Iowa
Every NOAA hail report filed in Lyon County since 1966, with preliminary National Weather Service reports to November 3, 2026.
Readout · Lyon County
- Last hail
- May 24, 2026
- 0.88 in, nickel size
- Hail days, last 5 years
- 6
- since Nov 3, 2021 · 12 reports
- Largest ever
- 4.00 in
- grapefruit · Aug 28, 2021
176 reports on 96 days since 1966 · #26 of 100 Iowa counties
Hail map · Lyon 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 Lyon County is from May 24, 2026. A local roofer can check and document it at no cost.
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What the record says about Lyon County
The latest hail report in Lyon County is from May 24, 2026, 0.88 in (nickel size). Since November 3, 2021 there have been 6 separate hail days; the biggest stones in that time were 2.00 in on April 28, 2025.
Over the 20 years 2006–2025, Lyon County logged 94 reports on 46 hail days, about 4.7 reports a year. That is 27% more than the median Iowa county (3.7 a year) and ranks #26 of 100 Iowa counties for all-time reports. Lyon County holds 1% of all 16,032 hail reports in Iowa.
9% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Iowa county. The largest hail on record here is 4.00 in (grapefruit) on August 28, 2021 near 1 E Larchwood.
Reports were down 48% in 2016–2025 (32) compared with 2006–2015 (62). The busiest year was 2001, with 18 reports on 6 days. Hail here peaks in June (27% of reports); 57% fall between April and June.
Reports a year 2006–2025 average
- Lyon County 4.7
- Median Iowa county 3.7
Hail days 2006–2025
- Lyon County 46
- Median Iowa county 39.5
Share 2 in or larger of sized reports
- Lyon County 9%
- Median Iowa county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3 | 3 | |||||||||||
| 2025 | 5 | 2 | 7 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 4 | 7 | 11 | ||||||||||
| 2020 | 1 | 1 | 2 | ||||||||||
| 2019 | 4 | 4 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 24, 2026 | 2 | 1.00 in | — |
| May 17, 2026 | 1 | 1.25 in | — |
| Jun 2, 2025 | 2 | 1.25 in | — |
| Apr 28, 2025 | 5 | 2.00 in | — |
| Apr 19, 2023 | 1 | 1.50 in | — |
| May 29, 2022 | 1 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Aug 28, 2021 | 4.00 ingrapefruit | 1 E Larchwood | $300K | 18:48 local · NCEI |
| Sep 22, 2010 | 2.75 inbaseball | 0.5 E Rock Rapids | — | 15:22 local · NCEI |
| Jun 27, 1998 | 2.75 inbaseball | Lester | — | 15:15 local · NCEI |
| May 29, 1980 | 2.75 inbaseball | — | — | 11:00 local · NCEI |
| Aug 28, 2021 | 2.50 intennis ball | 0.69 N Larchwood | — | 18:48 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 63 36%
- 1–2 in 98 56%
- 2 in + 15 9%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| May 24, 2026 | 0.88 innickel | 2.12 ESE Lester | 23:18 local · NCEI |
| May 24, 2026 | 1.00 inquarter | 1.22 SE Alvord | 22:10 local · NCEI |
| May 17, 2026 | 1.25 inhalf dollar | 4.07 E Lester | 16:18 local · NCEI |
| Jun 2, 2025 | 1.00 inquarter | 1.47 SSW Lakewood | 16:20 local · NCEI |
| Jun 2, 2025 | 1.25 inhalf dollar | 0.69 N Doon | 16:05 local · NCEI |
| Apr 28, 2025 | 0.88 innickel | 1.22 SE Little Rock | 18:18 local · NCEI |
| Apr 28, 2025 | 1.75 ingolf ball | 2.56 SW George | 18:09 local · NCEI |
| Apr 28, 2025 | 2.00 inhen egg | 4.08 W George | 18:08 local · NCEI |
| Apr 28, 2025 | 1.00 inquarter | Doon | 18:00 local · NCEI |
| Apr 28, 2025 | 1.00 inquarter | 3.66 SW Inwood | 17:47 local · NCEI |
| Apr 19, 2023 | 1.50 inping pong ball | Doon | 20:18 local · NCEI |
| May 29, 2022 | 1.50 inping pong ball | 3.01 E Klondike | 03:28 local · NCEI |
Cities and towns in Lyon County
| Place | Reports | Largest |
|---|---|---|
| Rock Rapids | 29 | 2.75 in |
| Little Rock | 22 | 2.50 in |
| Larchwood | 19 | 4.00 in |
| Doon | 17 | 1.75 in |
| George | 17 | 2.00 in |
| Lester | 16 | 2.75 in |
| Inwood | 13 | 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 |
|---|---|---|---|
| Alvord | 4 | 4 | May 24, 2026 |
Questions about hail in Lyon County
How often does it hail in Lyon County, Iowa?
176 hail reports have been logged in Lyon County since 1966. Over the 20 years 2006–2025 that averages 4.7 reports a year. That ranks #26 of 100 Iowa counties by number of reports.
When is hail season in Lyon County?
Most reports come in June, August, May. June alone accounts for 27% of all reports.
What is the largest hail recorded in Lyon County?
4.00 in (grapefruit size) on August 28, 2021 near 1 E Larchwood. 9% of reports here were 2 inches or larger.
When did it last hail in Lyon County?
The most recent report in this data is from May 24, 2026 (0.88 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Lyon County had in the last five years?
6 separate days with hail reports since November 3, 2021, adding up to 12 reports. The most recent was May 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.