Hail history for Calmar, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Calmar since 1998, with preliminary reports to November 3, 2026.
Readout · Calmar
- Last hail
- Aug 16, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 2.00 in
- hen egg · May 15, 2017
26 reports on 16 days since 1998 · #95 of 483 Iowa places
Hail map · Calmar
- 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 Calmar
The latest hail report in and around Calmar is from August 16, 2025, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on August 16, 2025.
Over the 20 years 2006–2025, Calmar logged 21 reports on 11 hail days, about 1.1 reports a year. That is about twice the median Iowa town on this site (0.5 a year) and ranks #95 of 483 Iowa cities and towns on this site for all-time reports. Calmar accounts for 16% of the 161 reports filed in Winneshiek County.
4% 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 2.00 in (hen egg) on May 15, 2017 near 0.5 E Calmar.
Reports were down 89% in 2016–2025 (2) compared with 2006–2015 (19). The busiest year was 2009, with 9 reports on 2 days. Hail here peaks in July (35% of reports); 42% fall between April and June.
Reports a year 2006–2025 average
- Calmar 1.1
- Winneshiek County 3.8
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Calmar 11
- Winneshiek County 31
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Calmar 4%
- 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 | 1 | 1 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 16, 2025 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 15, 2017 | 2.00 inhen egg | 0.5 E Calmar | Winneshiek | — | 17:59 local · NCEI |
| Jun 29, 2014 | 1.75 ingolf ball | 1.01 E Calmar | Winneshiek | $10K | 19:45 local · NCEI |
| Jul 24, 2009 | 1.75 ingolf ball | 2.89 SE Calmar | Winneshiek | $770K | 16:29 local · NCEI |
| Jul 24, 2009 | 1.75 ingolf ball | 0.5 E Calmar | Winneshiek | $900K | 12:04 local · NCEI |
| Jul 24, 2009 | 1.75 ingolf ball | 0.86 NE Calmar | Winneshiek | $10K | 12:03 local · NCEI |
Size of every report
- Under 1 in 9 35%
- 1–2 in 16 62%
- 2 in + 1 4%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Aug 16, 2025 | 1.00 inquarter | 1.01 E Calmar | Winneshiek | — | 00:13 local · NCEI |
| May 15, 2017 | 2.00 inhen egg | 0.5 E Calmar | Winneshiek | — | 17:59 local · NCEI |
| Jun 29, 2014 | 1.75 ingolf ball | 1.01 E Calmar | Winneshiek | $10K | 19:45 local · NCEI |
| Apr 12, 2014 | 0.88 innickel | 0.5 E Calmar | Winneshiek | — | 15:20 local · NCEI |
| Apr 12, 2014 | 0.75 inpenny | 0.5 E Calmar | Winneshiek | — | 14:20 local · NCEI |
| Sep 4, 2012 | 1.50 inping pong ball | 0.5 E Calmar | Winneshiek | — | 21:37 local · NCEI |
| Sep 4, 2012 | 1.00 inquarter | 0.5 E Calmar | Winneshiek | — | 21:13 local · NCEI |
| Aug 9, 2012 | 1.00 inquarter | 2.44 NE Calmar | Winneshiek | $10K | 16:05 local · NCEI |
| Jun 21, 2011 | 0.88 innickel | 0.5 E Calmar | Winneshiek | — | 01:45 local · NCEI |
| Jul 24, 2009 | 1.75 ingolf ball | 2.89 SE Calmar | Winneshiek | $770K | 16:29 local · NCEI |
| Jul 24, 2009 | 1.00 inquarter | 0.5 E Calmar | Winneshiek | $3K | 16:20 local · NCEI |
| Jul 24, 2009 | 1.00 inquarter | 0.5 E Calmar | Winneshiek | $3K | 12:06 local · NCEI |
Hail history near Calmar
- Ossian 9 km · 13
- Decorah 15 km · 32
- Ridgeway 16 km · 11
- Jackson Junction 17 km · 11
- Protivin 18 km · 14
- Waucoma 19 km · 10
- West Union 25 km · 14
- Postville 27 km · 13
Questions about hail in Calmar
How often does it hail in Calmar, Iowa?
26 hail reports have been logged in and within about 5 km (3 miles) of Calmar since 1998. Over the 20 years 2006–2025 that averages 1.1 reports a year. That ranks #95 of 483 Iowa places by number of reports.
When is hail season in Calmar?
Most reports come in July, May, June. July alone accounts for 35% of all reports.
What is the largest hail recorded in Calmar?
2.00 in (hen egg size) on May 15, 2017 near 0.5 E Calmar. 4% of reports here were 2 inches or larger.
When did it last hail in Calmar?
The most recent report in this data is from August 16, 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 Calmar had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was August 16, 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.