Hail history for Johnson County, Iowa
Every NOAA hail report filed in Johnson County since 1968, with preliminary National Weather Service reports to November 3, 2026.
Readout · Johnson County
- Last hail
- Apr 14, 2026
- 1.25 in, half dollar size
- Hail days, last 5 years
- 19
- since Nov 3, 2021 · 53 reports
- Largest ever
- 2.75 in
- baseball · Mar 10, 2026
229 reports on 104 days since 1968 · #14 of 100 Iowa counties
Hail map · Johnson 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 Johnson County
The latest hail report in Johnson County is from April 14, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 19 separate hail days; the biggest stones in that time were 2.75 in on March 10, 2026.
Over the 20 years 2006–2025, Johnson County logged 159 reports on 65 hail days, about 8.0 reports a year. That is about twice the median Iowa county (3.7 a year) and ranks #14 of 100 Iowa counties for all-time reports. Johnson County holds 1% of all 16,032 hail reports in Iowa.
6% 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 March 10, 2026 near 3.49 S Oasis.
Reports were down 19% in 2016–2025 (71) compared with 2006–2015 (88). The busiest year was 2006, with 23 reports on 7 days. Hail here peaks in April (23% of reports); 62% fall between April and June.
Reports a year 2006–2025 average
- Johnson County 8.0
- Median Iowa county 3.7
Hail days 2006–2025
- Johnson County 65
- Median Iowa county 39.5
Share 2 in or larger of sized reports
- Johnson County 6%
- Median Iowa county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 15 | 6 | 21 | ||||||||||
| 2025 | 1 | 2 | 3 | ||||||||||
| 2024 | 4 | 3 | 3 | 4 | 14 | ||||||||
| 2023 | 2 | 1 | 9 | 1 | 2 | 15 | |||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 10 | 11 | ||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 6 | 1 | 7 | ||||||||||
| 2017 | 12 | 1 | 1 | 1 | 5 | 20 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 14, 2026 | 5 | 1.50 in | — |
| Apr 2, 2026 | 1 | 1.75 in | — |
| Mar 31, 2026 | 1 | 0.88 in | — |
| Mar 15, 2026 | 2 | 1.50 in | — |
| Mar 10, 2026 | 12 | 2.75 in | — |
| Jul 10, 2025 | 2 | 1.00 in | — |
| Apr 17, 2025 | 1 | 0.75 in | — |
| Oct 24, 2024 | 4 | 1.00 in | — |
| Jun 25, 2024 | 3 | 1.75 in | — |
| May 24, 2024 | 1 | 1.00 in | — |
| May 21, 2024 | 1 | 1.00 in | — |
| May 7, 2024 | 1 | 0.88 in | — |
| Apr 16, 2024 | 4 | 1.00 in | — |
| Oct 11, 2023 | 2 | 1.50 in | — |
| Jun 4, 2023 | 1 | 0.88 in | — |
| May 13, 2023 | 1 | 1.00 in | — |
| May 7, 2023 | 8 | 1.50 in | — |
| Apr 5, 2023 | 1 | 1.00 in | — |
| Mar 31, 2023 | 2 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Mar 10, 2026 | 2.75 inbaseball | 3.49 S Oasis | — | 18:23 local · NCEI |
| Apr 13, 2006 | 2.75 inbaseball | 7 ENE Iowa City | $30K | 19:35 local · NCEI |
| Jun 18, 1998 | 2.75 inbaseball | Iowa City | — | 15:30 local · NCEI |
| May 18, 1997 | 2.75 inbaseball | Iowa City | $40.0 million | 17:45 local · NCEI |
| May 11, 1975 | 2.75 inbaseball | — | — | 13:00 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 90 39%
- 1–2 in 126 55%
- 2 in + 13 6%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Apr 14, 2026 | 1.25 inhalf dollar | 0.69 S Iowa City | 17:12 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.69 N Iowa City | 17:12 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 1.03 E Iowa City | 17:11 local · NCEI |
| Apr 14, 2026 | 1.25 inhalf dollar | 0.69 S Iowa City | 17:10 local · NCEI |
| Apr 14, 2026 | 1.50 inping pong ball | 0.86 SE Iowa City | 17:08 local · NCEI |
| Apr 2, 2026 | 1.75 ingolf ball | 1.03 E Iowa City Muni Arpt | 15:31 local · NCEI |
| Mar 31, 2026 | 0.88 innickel | 0.69 S University Hgts | 01:01 local · NCEI |
| Mar 15, 2026 | 0.88 innickel | 6.24 S Oasis | 08:40 local · NCEI |
| Mar 15, 2026 | 1.50 inping pong ball | 1.03 E Hills | 08:30 local · NCEI |
| Mar 10, 2026 | 2.75 inbaseball | 3.49 S Oasis | 18:23 local · NCEI |
| Mar 10, 2026 | 1.00 inquarter | 2.18 ESE Iowa City | 18:21 local · NCEI |
| Mar 10, 2026 | 1.25 inhalf dollar | 2.67 ENE Iowa City Muni Arpt | 18:16 local · NCEI |
Cities and towns in Johnson County
| Place | Reports | Largest |
|---|---|---|
| Iowa City | 80 | 2.75 in |
| North Liberty | 27 | 1.75 in |
| Coralville | 20 | 2.00 in |
| Hills | 16 | 1.50 in |
| Tiffin | 13 | 2.00 in |
| Solon | 12 | 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 |
|---|---|---|---|
| Swisher | 8 | 5 | Apr 3, 2011 |
| Frytown | 7 | 7 | Mar 10, 2026 |
| Downey | 5 | 5 | Mar 15, 2026 |
| Lone Tree | 4 | 4 | Jul 21, 2008 |
| Oxford | 3 | 3 | Apr 7, 2020 |
| Shueyville | 2 | 2 | May 17, 2004 |
Questions about hail in Johnson County
How often does it hail in Johnson County, Iowa?
229 hail reports have been logged in Johnson County since 1968. Over the 20 years 2006–2025 that averages 8.0 reports a year. That ranks #14 of 100 Iowa counties by number of reports.
When is hail season in Johnson County?
Most reports come in April, May, June. April alone accounts for 23% of all reports.
What is the largest hail recorded in Johnson County?
2.75 in (baseball size) on March 10, 2026 near 3.49 S Oasis. 6% of reports here were 2 inches or larger.
When did it last hail in Johnson County?
The most recent report in this data is from April 14, 2026 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Johnson County had in the last five years?
19 separate days with hail reports since November 3, 2021, adding up to 53 reports. The most recent was April 14, 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.