Floyd County was hit as recently as 2026-06-10, 51 days ago. Floyd County is hit in most years. The largest stone on record here is 3.25 inches and 3.2 times the National Weather Service's 1 inch severe criterion, reported on 2026-04-14 near Charles City.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Iowa. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-06-10, around Marble Rock. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Floyd County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 29 separate hail days here since 2010 -- 1.7 a year over 17 years of record. Those days carry 54 separate reports between them, two or three on a typical one. 5 of those 17 years produced none at all. The busiest single year was 2018, with 4 hail days. The last five years track the long-run rate, with 6 days since 2022.
Most hail here stays under 2 inches: only 2 of the 29 days on record passed it, 7%, the last on 2026-04-14. Those big days do not follow the county's usual calendar: most of them fall in April, not May. Golf-ball size is rarer still: 1.75 inches or more on 7 of the 29 days.
Across the whole of Iowa, see the Iowa hail map and history.
Reports cluster nearest Charles City -- 9 of the county's 29 hail days -- then Floyd (9), Marble Rock (7), Rockford (5) and Nora Springs (4). Beyond those, NOAA names Rudd, Nashua, Colwell and Floyd Crossing on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Charles City | 4 | 1.50″ |
| 1 E Charles City | 3 | 3.25″ |
| Floyd | 3 | 1.00″ |
| Marble Rock | 3 | 1.00″ |
| 3 ENE Floyd | 2 | 2.50″ |
The season runs March through August: 25 of the 29 hail days on record fall in those 6 months (86%). May is the single busiest month, with 7 of them (24%). That peak sits inside the window rather than at either end. Hail has also been reported in September, October and December, outside that window. January, February and November are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| March | 4 |
| April | 5 |
| May | 7 |
| June | 6 |
| July | 1 |
| August | 2 |
| September | 2 |
| October | 1 |
| December | 1 |
That day put 1 report on the map, the biggest 1 inch near Marble Rock. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-10 | 1.00″ | 1 |
| 2026-04-14 | 3.25″ | 6 |
| 2025-09-16 | 1.75″ | 4 |
| 2025-05-19 | 1.00″ | 1 |
| 2025-04-17 | 2.00″ | 4 |
| 2023-03-31 | 1.25″ | 1 |
| 2021-12-15 | 1.00″ | 1 |
| 2018-08-28 | 1.00″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 3.25 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Mitchell County (13 hail days), Butler County (22) and Cerro Gordo County (37). Floyd County sits in between.
Mitchell County · Butler County · Cerro Gordo County
Back to the Iowa hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Floyd County, Iowa only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.