Hail history for Decorah, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Decorah since 1965, with preliminary reports to November 3, 2026.
Readout · Decorah
- Last hail
- Aug 18, 2014
- 1.25 in, half dollar size
- Hail days, last 5 years
- 0
- since Nov 3, 2021 · 0 reports
- Largest ever
- 3.50 in
- teacup · Aug 25, 1965
32 reports on 22 days since 1965 · #60 of 483 Iowa places
Hail map · Decorah
- 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 Decorah is from August 18, 2014. A local roofer can check and document it at no cost.
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What the record says about Decorah
The latest hail report in and around Decorah is from August 18, 2014, 1.25 in (half dollar size). There has been no hail report here in the five years since November 3, 2021.
Over the 20 years 2006–2025, Decorah logged 8 reports on 7 hail days, about 0.4 reports a year. That is 11% less than the median Iowa town on this site (0.5 a year) and ranks #60 of 483 Iowa cities and towns on this site for all-time reports. Decorah accounts for 20% of the 161 reports filed in Winneshiek County.
6% 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 3.50 in (teacup) on August 25, 1965.
Reports were down 100% in 2016–2025 (0) compared with 2006–2015 (8). The busiest year was 2002, with 5 reports on 2 days. Hail here peaks in May (44% of reports); 59% fall between April and June.
Reports a year 2006–2025 average
- Decorah 0.4
- Winneshiek County 3.8
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Decorah 7
- Winneshiek County 31
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Decorah 6%
- Winneshiek County 5%
- 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 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Aug 25, 1965 | 3.50 inteacup | — | Winneshiek | — | 19:20 local · NCEI |
| Aug 9, 2012 | 2.00 inhen egg | 0.7 S Decorah Tatro Arpt | Winneshiek | — | 15:50 local · NCEI |
| Aug 18, 2014 | 1.75 ingolf ball | 2.01 E Decorah Muni Arpt | Winneshiek | — | 17:05 local · NCEI |
| Jul 19, 2004 | 1.75 ingolf ball | Decorah | Winneshiek | $5K | 14:35 local · NCEI |
| Jul 19, 2004 | 1.75 ingolf ball | Decorah | Winneshiek | $8K | 14:32 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 15 47%
- 1–2 in 15 47%
- 2 in + 2 6%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Aug 18, 2014 | 1.25 inhalf dollar | 2.61 ENE Decorah Muni Arpt | Winneshiek | — | 17:09 local · NCEI |
| Aug 18, 2014 | 1.75 ingolf ball | 2.01 E Decorah Muni Arpt | Winneshiek | — | 17:05 local · NCEI |
| Apr 12, 2014 | 1.00 inquarter | 0.85 NE Decorah | Winneshiek | — | 15:40 local · NCEI |
| Jun 21, 2013 | 0.75 inpenny | 1.47 NNE Decorah | Winneshiek | — | 07:13 local · NCEI |
| Aug 9, 2012 | 2.00 inhen egg | 0.7 S Decorah Tatro Arpt | Winneshiek | — | 15:50 local · NCEI |
| Jul 11, 2008 | 0.88 innickel | 0.53 NE Decorah | Winneshiek | — | 23:43 local · NCEI |
| May 31, 2008 | 0.75 inpenny | 0.85 NE Decorah | Winneshiek | — | 16:53 local · NCEI |
| Mar 21, 2007 | 0.75 inpenny | 0.86 NE Decorah | Winneshiek | — | 21:04 local · NCEI |
| May 26, 2005 | 0.75 inpenny | Decorah | Winneshiek | — | 17:59 local · NCEI |
| Jul 19, 2004 | 1.75 ingolf ball | Decorah | Winneshiek | $5K | 14:35 local · NCEI |
| Jul 19, 2004 | 1.00 inquarter | 2 N Decorah | Winneshiek | $2K | 14:34 local · NCEI |
| Jul 19, 2004 | 1.75 ingolf ball | Decorah | Winneshiek | $8K | 14:32 local · NCEI |
Hail history near Decorah
Questions about hail in Decorah
How often does it hail in Decorah, Iowa?
32 hail reports have been logged in and within about 5 km (3 miles) of Decorah since 1965. Over the 20 years 2006–2025 that averages 0.4 reports a year. That ranks #60 of 483 Iowa places by number of reports.
When is hail season in Decorah?
Most reports come in May, July, August. May alone accounts for 44% of all reports.
What is the largest hail recorded in Decorah?
3.50 in (teacup size) on August 25, 1965. 6% of reports here were 2 inches or larger.
When did it last hail in Decorah?
The most recent report in this data is from August 18, 2014 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Decorah had in the last five years?
None: there has been no hail report in and within about 5 km (3 miles) of Decorah since November 3, 2021. The last one was on August 18, 2014.
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.