The most recent reported hail day was 2026-04-23, 99 days ago. Carroll County is hit in most years. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2026-04-15 near Glidden.
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 2026-04-23, around Arcadia. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Carroll 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 17 separate hail days here since 2010 -- 1.0 a year over 17 years of record. They carry 26 reports in total: most hail days here are logged from a single spot. 6 of those 17 years produced none at all. The busiest single year was 2014, with 3 hail days. The last five years track the long-run rate, with 5 days since 2022.
2 of the 17 days reached 2 inches or more -- 12%, or about one hail day in 8, the last on 2026-04-15. Those big days do not follow the county's usual calendar: most of them fall in April, not August. Golf-ball size is rarer still: 1.75 inches or more on 4 of the 17 days.
Across the whole of Iowa, see the Iowa hail map and history.
Reports cluster nearest Coon Rapids -- 4 of the county's 17 hail days -- then Glidden (3), Carroll (2), Ralston (2) and Manning (2). Beyond those, NOAA names Arcadia and Willey on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Coon Rapids | 2 | 1.50″ |
| Glidden | 2 | 1.50″ |
| Arcadia | 2 | 1.00″ |
| 2 Sse Carroll | 1 | 2.50″ |
| 3 WSW Glidden | 1 | 2.50″ |
The season runs April through August: 14 of the 17 hail days on record fall in those 5 months (82%). August is the single busiest month, with 4 of them (24%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in September and December, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| April | 3 |
| May | 3 |
| June | 3 |
| July | 1 |
| August | 4 |
| September | 2 |
| December | 1 |
That day put 2 reports on the map, the biggest 1 inch near Arcadia. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-23 | 1.00″ | 2 |
| 2026-04-15 | 2.50″ | 2 |
| 2024-07-15 | 1.00″ | 1 |
| 2023-09-23 | 1.00″ | 1 |
| 2023-05-07 | 2.50″ | 4 |
| 2021-12-15 | 1.00″ | 1 |
| 2020-08-06 | 1.50″ | 1 |
| 2018-08-01 | 1.75″ | 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 2.5 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: Audubon County (16 hail days), Greene County (24) and Crawford County (18). Carroll County sits in between.
Audubon County · Greene County · Crawford 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, Carroll County, Iowa only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.