The most recent reported hail day was 2026-04-16, 106 days ago. Oregon 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 2025-04-20 near Alton.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Missouri. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-04-16, around Myrtle. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Oregon 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 21 separate hail days here since 2010 -- 1.2 a year over 17 years of record. They carry 28 reports in total: most hail days here are logged from a single spot. 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 7 days since 2022.
Most hail here stays under 2 inches: only 1 of the 21 days on record passed it, 5%, the last on 2025-04-20. They land in the same month as everything else, April. 8 of the 21 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Missouri, see the Missouri hail map and history.
Reports cluster nearest Thayer -- 7 of the county's 21 hail days -- then Myrtle (6), Alton (4), Koshkonong (3) and Couch (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Myrtle | 4 | 1.75″ |
| Thayer | 3 | 1.00″ |
| Alton | 2 | 2.00″ |
| Koshkonong | 2 | 1.75″ |
| 2 S Thayer | 1 | 1.75″ |
The season runs March through June: 17 of the 21 hail days on record fall in those 4 months (81%). April is the single busiest month, with 7 of them (33%). That peak sits inside the window rather than at either end. Hail has also been reported in July, August and October, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 2 |
| April | 7 |
| May | 4 |
| June | 4 |
| July | 2 |
| August | 1 |
| October | 1 |
That day put 1 report on the map, the biggest 1 inch near Myrtle. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-16 | 1.00″ | 1 |
| 2025-04-20 | 2.00″ | 1 |
| 2025-03-30 | 1.75″ | 3 |
| 2024-05-25 | 1.00″ | 1 |
| 2023-07-13 | 1.50″ | 1 |
| 2023-06-14 | 1.75″ | 1 |
| 2022-10-15 | 1.75″ | 2 |
| 2021-04-09 | 1.00″ | 1 |
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, over the state line included: Howell County (45 hail days), Ripley County (24), Carter County (26), Fulton County, Arkansas (20) and Sharp County, Arkansas (24). Oregon County sits in between.
Howell County · Ripley County · Carter County · Fulton County, Arkansas · Sharp County, Arkansas
Back to the Missouri hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Oregon County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.