The most recent reported hail day was 2026-03-31, 122 days ago. Henry County is hit in most years. The largest stone on record here is 2 inches, a hen egg and twice the National Weather Service's 1 inch severe criterion, reported on 2023-05-07 near Mount Pleasant.
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 2026-03-31, around Wayland. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Henry County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
Get free access Check an addressOur US-based call center calls the homeowners in this storm and books roof inspections straight onto your calendar. You work the storm; we fill the schedule. We dial -- you do not have to knock a single door.
See call-center options ->NOAA's Storm Prediction Center has logged 20 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 39 separate reports between them, two or three on a typical one. 5 of those 17 years produced none at all. One year dominates the record: 2017 alone produced 4 of the 20 days. The last five years track the long-run rate, with 6 days since 2022.
2 of the 20 days reached 2 inches or more -- 10%, or about one hail day in 10, the last on 2023-05-07. Those big days do not follow the county's usual calendar: most of them fall in May, not March. 7 of the 20 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Iowa, see the Iowa hail map and history.
Reports cluster nearest Mount Pleasant -- 6 of the county's 20 hail days -- then New London (5), Wayland (5), Lowell (3) and Hillsboro (2). Beyond those, NOAA names Salem, Swedesburg, Mount Union and Olds on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Wayland | 5 | 1.75″ |
| Mount Pleasant | 4 | 1.75″ |
| Mount Union | 2 | 1.50″ |
| 2 Sw Mount Pleasant | 1 | 2.00″ |
| 5 Wnw Mount Pleasant | 1 | 2.00″ |
The season runs March through June: 17 of the 20 hail days on record fall in those 4 months (85%). March is the single busiest month, with 5 of them (25%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in February and July, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 5 |
| April | 3 |
| May | 5 |
| June | 4 |
| July | 2 |
That day put 3 reports on the map, the biggest 1.75 inches near Wayland. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-03-31 | 1.75″ | 3 |
| 2026-03-10 | 1.25″ | 2 |
| 2024-03-04 | 1.75″ | 1 |
| 2023-05-07 | 2.00″ | 1 |
| 2023-05-06 | 1.25″ | 1 |
| 2023-03-31 | 1.00″ | 1 |
| 2021-07-09 | 1.75″ | 3 |
| 2020-04-08 | 1.75″ | 3 |
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 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: Des Moines County (21 hail days), Jefferson County (17) and Washington County (24). Henry County sits in between.
Des Moines County · Jefferson County · Washington 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, Henry County, Iowa only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.