Hail history for Diagonal, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Diagonal since 1989, with preliminary reports to November 3, 2026.
Readout · Diagonal
- Last hail
- Jun 3, 2020
- 1.00 in, quarter size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 1.75 in
- golf ball · Jun 29, 2014
11 reports on 10 days since 1989 · #398 of 483 Iowa places
Hail map · Diagonal
- 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 Diagonal is from June 3, 2020. A local roofer can check and document it at no cost.
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What the record says about Diagonal
The latest hail report in and around Diagonal is from June 3, 2020, 1.00 in (quarter size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Diagonal logged 6 reports on 5 hail days, about 0.3 reports a year. That is 33% less than the median Iowa town on this site (0.5 a year) and ranks #398 of 483 Iowa cities and towns on this site for all-time reports. Diagonal accounts for 10% of the 105 reports filed in Ringgold 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 June 29, 2014 near 0.87 SW Knowlton.
The busiest year was 2010, with 3 reports on 2 days. Hail here peaks in June (55% of reports); 82% fall between April and June.
Reports a year 2006–2025 average
- Diagonal 0.3
- Ringgold County 2.3
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Diagonal 5
- Ringgold County 27
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Diagonal 0%
- Ringgold County 12%
- 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 | 1 | 1 | |||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jun 29, 2014 | 1.75 ingolf ball | 0.87 SW Knowlton | Ringgold | $10K | 20:00 local · NCEI |
| May 27, 2004 | 1.75 ingolf ball | 1 N Decatur City | Decatur | $10K | 10:52 local · NCEI |
| Jun 29, 1998 | 1.75 ingolf ball | Diagonal | Ringgold | $25K | 17:15 local · NCEI |
| Jun 3, 2020 | 1.00 inquarter | 0.87 SW Knowlton | Ringgold | $25K | 05:05 local · NCEI |
| Jun 1, 2010 | 1.00 inquarter | 1.25 ENE Knowlton | Ringgold | $5K | 15:37 local · NCEI |
Size of every report
- Under 1 in 2 18%
- 1–2 in 9 82%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jun 3, 2020 | 1.00 inquarter | 0.87 SW Knowlton | Ringgold | $25K | 05:05 local · NCEI |
| Jun 22, 2019 | 0.88 innickel | 0.87 SW Knowlton | Ringgold | — | 17:35 local · NCEI |
| Jun 29, 2014 | 1.75 ingolf ball | 0.87 SW Knowlton | Ringgold | $10K | 20:00 local · NCEI |
| Jun 1, 2010 | 1.00 inquarter | 1.25 ENE Knowlton | Ringgold | $5K | 15:37 local · NCEI |
| Apr 5, 2010 | 1.00 inquarter | 0.87 NW Knowlton | Ringgold | $1K | 13:08 local · NCEI |
| Apr 5, 2010 | 1.00 inquarter | 0.87 NW Knowlton | Ringgold | $1K | 12:21 local · NCEI |
| Sep 13, 2005 | 0.75 inpenny | 1 N Diagonal | Ringgold | — | 05:14 local · NCEI |
| May 27, 2004 | 1.75 ingolf ball | 1 N Decatur City | Decatur | $10K | 10:52 local · NCEI |
| Jun 18, 2002 | 1.00 inquarter | Diagonal | Ringgold | $5K | 08:21 local · NCEI |
| Jun 29, 1998 | 1.75 ingolf ball | Diagonal | Ringgold | $25K | 17:15 local · NCEI |
| Aug 26, 1989 | 1.00 inquarter | — | Ringgold | — | 21:15 local · NCEI |
Hail history near Diagonal
Questions about hail in Diagonal
How often does it hail in Diagonal, Iowa?
11 hail reports have been logged in and within about 5 km (3 miles) of Diagonal since 1989. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #398 of 483 Iowa places by number of reports.
When is hail season in Diagonal?
Most reports come in June, April, May. June alone accounts for 55% of all reports.
What is the largest hail recorded in Diagonal?
1.75 in (golf ball size) on June 29, 2014 near 0.87 SW Knowlton. 0% of reports here were 2 inches or larger.
When did it last hail in Diagonal?
The most recent report in this data is from June 3, 2020 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Diagonal had in the last five years?
None: there has been no hail report in and within about 5 km (3 miles) of Diagonal since November 3, 2021. The last one was on June 3, 2020.
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.