Hail history for Denver, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Denver since 1978, with preliminary reports to November 3, 2026.
Readout · Denver
- Last hail
- Sep 22, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 3 reports
- Largest ever
- 4.00 in
- grapefruit · May 25, 2008
16 reports on 12 days since 1978 · #239 of 483 Iowa places
Hail map · Denver
- 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 Denver is from September 22, 2025. A local roofer can check and document it at no cost.
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What the record says about Denver
The latest hail report in and around Denver is from September 22, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 2.75 in on July 28, 2023.
Over the 20 years 2006–2025, Denver logged 11 reports on 8 hail days, about 0.6 reports a year. That is 22% more than the median Iowa town on this site (0.5 a year) and ranks #239 of 483 Iowa cities and towns on this site for all-time reports. Denver accounts for 13% of the 128 reports filed in Bremer County.
25% 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 4.00 in (grapefruit) on May 25, 2008 near 2.15 ENE Boies.
Reports were down 43% in 2016–2025 (4) compared with 2006–2015 (7). The busiest year was 2008, with 3 reports on 1 day. Hail here peaks in May (50% of reports); 88% fall between April and June.
Reports a year 2006–2025 average
- Denver 0.6
- Bremer County 3.8
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Denver 8
- Bremer County 20
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Denver 25%
- Bremer County 9%
- 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 | 1 | 1 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | 2 | ||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 22, 2025 | 1 | 1.00 in | — |
| Jul 28, 2023 | 1 | 2.75 in | — |
| May 7, 2023 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 25, 2008 | 4.00 ingrapefruit | 2.15 ENE Boies | Black Hawk | $50K | 16:39 local · NCEI |
| Jul 28, 2023 | 2.75 inbaseball | 0.86 SW Artesian | Bremer | — | 17:23 local · NCEI |
| May 20, 1987 | 2.75 inbaseball | — | Bremer | — | 17:11 local · NCEI |
| Apr 12, 2014 | 2.00 inhen egg | 0.69 N Denver | Bremer | $30K | 18:00 local · NCEI |
| May 25, 2008 | 1.75 ingolf ball | 1.02 E Denver | Bremer | $10K | 16:31 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 2 13%
- 1–2 in 10 63%
- 2 in + 4 25%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Sep 22, 2025 | 1.00 inquarter | 1.02 E Denver | Bremer | — | 18:22 local · NCEI |
| Jul 28, 2023 | 2.75 inbaseball | 0.86 SW Artesian | Bremer | — | 17:23 local · NCEI |
| May 7, 2023 | 1.00 inquarter | 3.13 ESE Denver | Bremer | — | 20:21 local · NCEI |
| Jun 30, 2016 | 0.75 inpenny | 1.02 E Denver | Bremer | — | 13:36 local · NCEI |
| Apr 12, 2014 | 2.00 inhen egg | 0.69 N Denver | Bremer | $30K | 18:00 local · NCEI |
| Apr 12, 2014 | 1.25 inhalf dollar | 1.02 E Denver | Bremer | $3K | 17:56 local · NCEI |
| Apr 9, 2013 | 1.00 inquarter | 1.02 E Denver | Bremer | $1K | 08:40 local · NCEI |
| Apr 6, 2010 | 0.88 innickel | 1.02 E Denver | Bremer | — | 16:14 local · NCEI |
| May 25, 2008 | 4.00 ingrapefruit | 2.15 ENE Boies | Black Hawk | $50K | 16:39 local · NCEI |
| May 25, 2008 | 1.75 ingolf ball | 1.02 E Denver | Bremer | $10K | 16:31 local · NCEI |
| May 25, 2008 | 1.75 ingolf ball | 2.15 ENE Boies | Black Hawk | $10K | 16:23 local · NCEI |
| May 8, 2003 | 1.00 inquarter | Waterloo | Black Hawk | $10K | 19:32 local · NCEI |
Hail history near Denver
- Readlyn 10 km · 21
- Janesville 11 km · 10
- Waverly 13 km · 22
- Tripoli 17 km · 13
- Cedar Falls 19 km · 67
- Waterloo 20 km · 98
- Fairbank 24 km · 19
- Plainfield 26 km · 10
Questions about hail in Denver
How often does it hail in Denver, Iowa?
16 hail reports have been logged in and within about 5 km (3 miles) of Denver since 1978. Over the 20 years 2006–2025 that averages 0.6 reports a year. That ranks #239 of 483 Iowa places by number of reports.
When is hail season in Denver?
Most reports come in May, April, June. May alone accounts for 50% of all reports.
What is the largest hail recorded in Denver?
4.00 in (grapefruit size) on May 25, 2008 near 2.15 ENE Boies. 25% of reports here were 2 inches or larger.
When did it last hail in Denver?
The most recent report in this data is from September 22, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Denver had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was September 22, 2025.
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.