The most recent reported hail day was 2025-05-19 -- 1 year ago, with nothing reported since. Marion County is hit in most years. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2023-03-31 near Rensselaer.
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 2025-05-19, around Hannibal. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Marion 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 21 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 53 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 2011, with 4 hail days. The last five years track the long-run rate, with 5 days since 2022.
Most hail here stays under 2 inches: only 1 of the 21 days on record passed it, 5%, the last on 2023-03-31. Those big days do not follow the county's usual calendar: most of them fall in March, not May. Golf-ball size is rarer still: 1.75 inches or more on 3 of the 21 days.
Across the whole of Missouri, see the Missouri hail map and history.
Reports cluster nearest Hannibal -- 12 of the county's 21 hail days -- then Rensselaer (3), Palmyra (3) and Philadelphia (2). That one town is named on 57% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Hannibal | 5 | 2.50″ |
| 1 E Hannibal | 3 | 1.75″ |
| 1 Nw Hannibal | 2 | 1.75″ |
| 1 S Hannibal | 2 | 1.75″ |
| Palmyra | 2 | 1.75″ |
The season runs April through June: 17 of the 21 hail days on record fall in those 3 months (81%). May is the single busiest month, with 8 of them (38%). That peak sits inside the window rather than at either end. Hail has also been reported in February, March and December, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| February | 2 |
| March | 1 |
| April | 4 |
| May | 8 |
| June | 5 |
| December | 1 |
That day put 1 report on the map, the biggest 1.2 inches near Hannibal. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-05-19 | 1.20″ | 1 |
| 2024-05-02 | 1.75″ | 2 |
| 2023-06-24 | 1.50″ | 1 |
| 2023-04-04 | 1.00″ | 1 |
| 2023-03-31 | 2.75″ | 24 |
| 2020-06-03 | 1.00″ | 1 |
| 2019-05-28 | 1.00″ | 1 |
| 2018-05-27 | 1.25″ | 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 2.75 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: Ralls County (18 hail days), Lewis County (28), Pike County (18) and Adams County, Illinois (40). Marion County sits in between.
Ralls County · Lewis County · Pike County · Adams County, Illinois
Back to the Missouri hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Marion County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.