Clarke County was hit as recently as 2026-06-11, 50 days ago. Clarke County has recorded hail in nearly every year on the archive. The largest stone on record here is 3.5 inches and 3.5 times the National Weather Service's 1 inch severe criterion, reported on 2023-04-04 near Osceola.
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 2026-06-11, around Osceola. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Clarke 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 33 separate hail days here since 2010 -- 1.9 a year over 17 years of record. Those days carry 68 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2023, with 4 hail days. The last five years track the long-run rate, with 12 days since 2022.
5 of the 33 days reached 2 inches or more -- 15%, or about one hail day in 7, the last on 2026-06-10. They land in the same month as everything else, April. 12 of the 33 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 Murray -- 19 of the county's 33 hail days -- then Osceola (13), Woodburn (7), New Virginia (2) and Weldon (2). That one town is named on 58% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 2 W Murray | 11 | 2.00″ |
| Murray | 5 | 2.75″ |
| Osceola | 3 | 2.00″ |
| 2 Nne Osceola | 3 | 1.00″ |
| 1 N Osceola | 2 | 1.75″ |
The season runs April through June: 27 of the 33 hail days on record fall in those 3 months (82%). April is the single busiest month, with 10 of them (30%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in March, July and August, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| March | 3 |
| April | 10 |
| May | 7 |
| June | 10 |
| July | 2 |
| August | 1 |
That day put 1 report on the map, the biggest 1.75 inches near Osceola. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-11 | 1.75″ | 1 |
| 2026-06-10 | 2.00″ | 1 |
| 2026-04-17 | 1.00″ | 1 |
| 2025-05-19 | 2.00″ | 2 |
| 2025-04-17 | 1.25″ | 1 |
| 2025-03-14 | 1.00″ | 1 |
| 2024-05-21 | 1.00″ | 1 |
| 2024-04-30 | 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 3.5 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: Decatur County (15 hail days), Warren County (43) and Union County (30). Clarke County sits in between.
Decatur County · Warren County · Union 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, Clarke County, Iowa only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.