Hail history for Louisa County, Iowa
Every NOAA hail report filed in Louisa County since 1966, with preliminary National Weather Service reports to November 3, 2026.
Readout · Louisa County
- Last hail
- Mar 31, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 4
- since Nov 3, 2021 · 6 reports
- Largest ever
- 2.75 in
- baseball · Apr 3, 2014
67 reports on 40 days since 1966 · #98 of 100 Iowa counties
Hail map · Louisa County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Louisa County
The latest hail report in Louisa County is from March 31, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 4 separate hail days; the biggest stones in that time were 1.75 in on March 31, 2026.
Over the 20 years 2006–2025, Louisa County logged 34 reports on 22 hail days, about 1.7 reports a year. That is about half the median Iowa county (3.7 a year) and ranks #98 of 100 Iowa counties for all-time reports. Louisa County holds 0% of all 16,032 hail reports in Iowa.
8% 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 2.75 in (baseball) on April 3, 2014 near Wapello.
Reports were down 21% in 2016–2025 (15) compared with 2006–2015 (19). The busiest year was 2003, with 12 reports on 1 day. Hail here peaks in April (31% of reports); 55% fall between April and June.
Reports a year 2006–2025 average
- Louisa County 1.7
- Median Iowa county 3.7
Hail days 2006–2025
- Louisa County 22
- Median Iowa county 39.5
Share 2 in or larger of sized reports
- Louisa County 8%
- 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 | 0 | ||||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 3 | 3 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 4 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Mar 31, 2026 | 3 | 1.75 in | — |
| Oct 24, 2024 | 1 | 0.88 in | — |
| Oct 4, 2024 | 1 | 1.00 in | — |
| Mar 31, 2023 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Apr 3, 2014 | 2.75 inbaseball | Wapello | — | 00:40 local · NCEI |
| Apr 30, 2003 | 2.75 inbaseball | Morning Sun | $4.0 million | 17:40 local · NCEI |
| Apr 30, 2003 | 2.75 inbaseball | 2 S Wapello | $1.0 million | 16:50 local · NCEI |
| Mar 15, 2016 | 2.50 intennis ball | 6.07 ENE Grandview | — | 17:33 local · NCEI |
| Mar 21, 1966 | 2.00 inhen egg | — | — | 13:33 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 22 33%
- 1–2 in 40 60%
- 2 in + 5 7%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Mar 31, 2026 | 1.00 inquarter | 2.07 N Grandview | 09:39 local · NCEI |
| Mar 31, 2026 | 1.50 inping pong ball | 0.69 S Columbus City | 09:23 local · NCEI |
| Mar 31, 2026 | 1.75 ingolf ball | Letts | 07:14 local · NCEI |
| Oct 24, 2024 | 0.88 innickel | 1.25 ESE Morning Sun | 20:05 local · NCEI |
| Oct 4, 2024 | 1.00 inquarter | 0.69 S Columbus City | 02:18 local · NCEI |
| Mar 31, 2023 | 1.00 inquarter | 0.86 NW Columbus Jct | 16:28 local · NCEI |
| Apr 7, 2020 | 1.75 ingolf ball | 0.52 E Grandview | 20:54 local · NCEI |
| Apr 7, 2020 | 1.50 inping pong ball | 1.73 NE Grandview | 20:53 local · NCEI |
| Apr 7, 2020 | 1.00 inquarter | 3.32 NE Grandview | 20:51 local · NCEI |
| May 19, 2017 | 1.75 ingolf ball | 0.52 E Wapello | 15:45 local · NCEI |
| May 17, 2017 | 1.75 ingolf ball | 0.52 E Grandview | 19:40 local · NCEI |
| May 17, 2017 | 1.00 inquarter | 0.52 E Grandview | 16:52 local · NCEI |
Cities and towns in Louisa County
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 |
|---|---|---|---|
| Columbus Junction | 9 | 9 | Mar 31, 2023 |
| Morning Sun | 4 | 4 | Oct 24, 2024 |
| Columbus City | 3 | 3 | Mar 31, 2026 |
| Cotter | 3 | 3 | Jun 6, 2006 |
| Letts | 3 | 2 | Mar 31, 2026 |
Questions about hail in Louisa County
How often does it hail in Louisa County, Iowa?
67 hail reports have been logged in Louisa County since 1966. Over the 20 years 2006–2025 that averages 1.7 reports a year. That ranks #98 of 100 Iowa counties by number of reports.
When is hail season in Louisa County?
Most reports come in April, March, May. April alone accounts for 31% of all reports.
What is the largest hail recorded in Louisa County?
2.75 in (baseball size) on April 3, 2014 near Wapello. 7% of reports here were 2 inches or larger.
When did it last hail in Louisa County?
The most recent report in this data is from March 31, 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 Louisa County had in the last five years?
4 separate days with hail reports since November 3, 2021, adding up to 6 reports. The most recent was March 31, 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.