Hail history for Osceola County, Iowa
Every NOAA hail report filed in Osceola County since 1958, with preliminary National Weather Service reports to November 3, 2026.
Readout · Osceola County
- Last hail
- May 17, 2026
- 0.75 in, penny size
- Hail days, last 5 years
- 9
- since Nov 3, 2021 · 16 reports
- Largest ever
- 4.00 in
- grapefruit · Aug 14, 1958
121 reports on 73 days since 1958 · #69 of 100 Iowa counties
Hail map · Osceola County
- 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 Osceola County
The latest hail report in Osceola County is from May 17, 2026, 0.75 in (penny size). Since November 3, 2021 there have been 9 separate hail days; the biggest stones in that time were 1.75 in on April 13, 2026.
Over the 20 years 2006–2025, Osceola County logged 48 reports on 31 hail days, about 2.4 reports a year. That is 35% less than the median Iowa county (3.7 a year) and ranks #69 of 100 Iowa counties for all-time reports. Osceola County holds 1% of all 16,032 hail reports in Iowa.
2% 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 14, 1958.
Reports held about level in 2016–2025 (24) compared with 2006–2015 (24). The busiest year was 2001, with 17 reports on 4 days. Hail here peaks in June (25% of reports); 61% fall between April and June.
Reports a year 2006–2025 average
- Osceola County 2.4
- Median Iowa county 3.7
Hail days 2006–2025
- Osceola County 31
- Median Iowa county 39.5
Share 2 in or larger of sized reports
- Osceola County 2%
- Median Iowa county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 4 | 1 | 5 | ||||||||||
| 2025 | 1 | 1 | 2 | ||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 5 | 5 | |||||||||||
| 2022 | 2 | 2 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 2 | 2 | |||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 1 | 2 | 4 | 7 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 17, 2026 | 1 | 0.75 in | — |
| Apr 13, 2026 | 4 | 1.75 in | — |
| Sep 21, 2025 | 1 | 1.00 in | — |
| Apr 28, 2025 | 1 | 1.25 in | — |
| Jul 10, 2024 | 1 | 1.00 in | — |
| Jul 4, 2024 | 1 | 1.00 in | — |
| Jul 13, 2023 | 3 | 1.00 in | — |
| Jul 10, 2023 | 2 | 1.75 in | — |
| Apr 22, 2022 | 2 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Aug 14, 1958 | 4.00 ingrapefruit | — | — | 20:15 local · NCEI |
| Jun 12, 2001 | 2.75 inbaseball | Ocheyedan | $100K | 19:45 local · NCEI |
| Apr 13, 2026 | 1.75 ingolf ball | 1.71 SE Harris | — | 17:30 local · NCEI |
| Jul 10, 2023 | 1.75 ingolf ball | 0.85 SE Ashton | — | 16:21 local · NCEI |
| Apr 22, 2022 | 1.75 ingolf ball | 2.04 SE Harris | — | 04:50 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 41%
- 1–2 in 69 57%
- 2 in + 2 2%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| May 17, 2026 | 0.75 inpenny | 1.22 NE Sibley | 17:33 local · NCEI |
| Apr 13, 2026 | 1.00 inquarter | 0.85 NE Melvin | 17:53 local · NCEI |
| Apr 13, 2026 | 1.75 ingolf ball | 1.71 SE Harris | 17:30 local · NCEI |
| Apr 13, 2026 | 1.00 inquarter | 1.66 ENE May City | 17:27 local · NCEI |
| Apr 13, 2026 | 1.00 inquarter | May City | 17:25 local · NCEI |
| Sep 21, 2025 | 1.00 inquarter | 1.66 ENE Allendorf | 18:50 local · NCEI |
| Apr 28, 2025 | 1.25 inhalf dollar | 1.51 E Sibley | 18:23 local · NCEI |
| Jul 10, 2024 | 1.00 inquarter | 0.5 E Cloverdale | 13:30 local · NCEI |
| Jul 4, 2024 | 1.00 inquarter | 1 E Harris | 12:23 local · NCEI |
| Jul 13, 2023 | 0.75 inpenny | 3.15 SSW May City | 19:45 local · NCEI |
| Jul 13, 2023 | 1.00 inquarter | 2.94 NNE Cloverdale | 19:27 local · NCEI |
| Jul 13, 2023 | 0.88 innickel | 0.5 E Sibley | 19:20 local · NCEI |
Cities and towns in Osceola 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 |
|---|---|---|---|
| Melvin | 9 | 9 | Apr 13, 2026 |
Questions about hail in Osceola County
How often does it hail in Osceola County, Iowa?
121 hail reports have been logged in Osceola County since 1958. Over the 20 years 2006–2025 that averages 2.4 reports a year. That ranks #69 of 100 Iowa counties by number of reports.
When is hail season in Osceola County?
Most reports come in June, May, July. June alone accounts for 25% of all reports.
What is the largest hail recorded in Osceola County?
4.00 in (grapefruit size) on August 14, 1958. 2% of reports here were 2 inches or larger.
When did it last hail in Osceola County?
The most recent report in this data is from May 17, 2026 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Osceola County had in the last five years?
9 separate days with hail reports since November 3, 2021, adding up to 16 reports. The most recent was May 17, 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.