Hail history for Clinton County, Iowa
Every NOAA hail report filed in Clinton County since 1956, with preliminary National Weather Service reports to November 3, 2026.
Readout · Clinton County
- Last hail
- Jun 28, 2026
- 2.00 in, hen egg size
- Hail days, last 5 years
- 10
- since Nov 3, 2021 · 13 reports
- Largest ever
- 4.00 in
- grapefruit · Aug 7, 1958
142 reports on 81 days since 1956 · #51 of 100 Iowa counties
Hail map · Clinton 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 Clinton County is from June 28, 2026. A local roofer can check and document it at no cost.
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What the record says about Clinton County
The latest hail report in Clinton County is from June 28, 2026, 2.00 in (hen egg size). Since November 3, 2021 there have been 10 separate hail days; the biggest stones in that time were 2.00 in on June 28, 2026.
Over the 20 years 2006–2025, Clinton County logged 81 reports on 42 hail days, about 4.0 reports a year. That is about the same as the median Iowa county (3.7 a year) and ranks #51 of 100 Iowa counties for all-time reports. Clinton 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 7, 1958.
Reports held about level in 2016–2025 (40) compared with 2006–2015 (41). The busiest year was 2017, with 17 reports on 5 days. Hail here peaks in May (21% of reports); 50% fall between April and June.
Reports a year 2006–2025 average
- Clinton County 4.0
- Median Iowa county 3.7
Hail days 2006–2025
- Clinton County 42
- Median Iowa county 39.5
Share 2 in or larger of sized reports
- Clinton 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 | 1 | 4 | ||||||||||
| 2025 | 1 | 1 | 2 | ||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 2 | 1 | 3 | ||||||||||
| 2022 | 2 | 2 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 3 | 3 | |||||||||||
| 2018 | 3 | 3 | |||||||||||
| 2017 | 6 | 5 | 1 | 5 | 17 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 28, 2026 | 1 | 2.00 in | — |
| Mar 10, 2026 | 3 | 1.25 in | — |
| Jul 10, 2025 | 1 | 1.75 in | — |
| Mar 19, 2025 | 1 | 1.00 in | — |
| May 21, 2024 | 1 | 1.50 in | — |
| May 19, 2024 | 1 | 1.25 in | — |
| May 7, 2023 | 1 | 1.25 in | — |
| Apr 20, 2023 | 1 | 1.00 in | — |
| Apr 4, 2023 | 1 | 0.88 in | — |
| Nov 4, 2022 | 2 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Aug 7, 1958 | 4.00 ingrapefruit | — | — | 15:50 local · NCEI |
| Jul 27, 1995 | 2.75 inbaseball | Clinton Airport | $200K | 17:27 local · NCEI |
| Jul 27, 1995 | 2.75 inbaseball | Dewitt | $175K | 16:50 local · NCEI |
| Jul 27, 1995 | 2.75 inbaseball | Grand Mound | $100K | 16:50 local · NCEI |
| Jul 27, 1995 | 2.75 inbaseball | Calamus | $250K | 16:36 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 50 35%
- 1–2 in 79 56%
- 2 in + 13 9%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jun 28, 2026 | 2.00 inhen egg | 3.6 W Charlotte | 13:08 local · NCEI |
| Mar 10, 2026 | 1.25 inhalf dollar | 0.86 SE Charlotte | 19:09 local · NCEI |
| Mar 10, 2026 | 1.00 inquarter | 1.72 SE Low Moor | 18:09 local · NCEI |
| Mar 10, 2026 | 1.25 inhalf dollar | 1.24 NW Clinton | 18:08 local · NCEI |
| Jul 10, 2025 | 1.75 ingolf ball | 1.69 WNW Clinton | 20:17 local · NCEI |
| Mar 19, 2025 | 1.00 inquarter | 2.14 NNE Clinton | 08:05 local · NCEI |
| May 21, 2024 | 1.50 inping pong ball | 2.48 NW Delmar | 17:41 local · NCEI |
| May 19, 2024 | 1.25 inhalf dollar | 0.51 E Wheatland | 23:48 local · NCEI |
| May 7, 2023 | 1.25 inhalf dollar | 1.24 SE Elwood | 16:52 local · NCEI |
| Apr 20, 2023 | 1.00 inquarter | Dewitt | 01:43 local · NCEI |
| Apr 4, 2023 | 0.88 innickel | 1.47 NNW Bulgers Hollow Cp Gd | 09:51 local · NCEI |
| Nov 4, 2022 | 1.00 inquarter | 3.45 S Bulgers Hollow Cp Gd | 09:38 local · NCEI |
Cities and towns in Clinton 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 |
|---|---|---|---|
| Calamus | 8 | 4 | Apr 15, 2017 |
| Charlotte | 7 | 7 | Mar 10, 2026 |
| McCausland | 7 | 7 | May 27, 2024 |
| Delmar | 6 | 5 | Jun 28, 2026 |
| Wheatland | 6 | 6 | May 19, 2024 |
| Big Rock | 3 | 3 | Jun 11, 2022 |
| Goose Lake | 3 | 3 | Jun 18, 2010 |
| Grand Mound | 3 | 2 | Apr 15, 2017 |
| Toronto | 3 | 3 | Jun 20, 2015 |
| Low Moor | 2 | 2 | Aug 10, 2017 |
| Welton | 2 | 2 | Apr 25, 2008 |
| Andover | 1 | 1 | Aug 8, 2011 |
Questions about hail in Clinton County
How often does it hail in Clinton County, Iowa?
142 hail reports have been logged in Clinton County since 1956. Over the 20 years 2006–2025 that averages 4.0 reports a year. That ranks #51 of 100 Iowa counties by number of reports.
When is hail season in Clinton County?
Most reports come in May, July, June. May alone accounts for 21% of all reports.
What is the largest hail recorded in Clinton County?
4.00 in (grapefruit size) on August 7, 1958. 9% of reports here were 2 inches or larger.
When did it last hail in Clinton County?
The most recent report in this data is from June 28, 2026 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Clinton County had in the last five years?
10 separate days with hail reports since November 3, 2021, adding up to 13 reports. The most recent was June 28, 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.