The most recent reported hail day was 2026-04-27, 95 days ago. Franklin County is hit in most years, often more than once. The largest stone on record here is 4 inches, a grapefruit and 4 times the National Weather Service's 1 inch severe criterion, reported on 2015-04-08 near Sullivan.
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 2026-04-27, around Sullivan. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Franklin 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 50 separate hail days here since 2010 -- 2.9 a year over 17 years of record. Those days carry 165 separate reports between them, better than three on a typical one. 3 of those 17 years produced none at all. One year dominates the record: 2011 alone produced 10 of the 50 days. The last five years track the long-run rate, with 15 days since 2022.
12 of the 50 days reached 2 inches or more -- 24%, or about one hail day in 4, the last on 2026-04-27. They land in the same month as everything else, April. 22 of the 50 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 Union -- 11 of the county's 50 hail days -- then New Haven (11), Sullivan (9), Washington (9) and Villa Ridge (9). Beyond those, NOAA names Pacific, Gray Summit, Lonedell, St. Clair, Gerald, Augusta, Stanton, Catawissa and Japan on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Sullivan | 7 | 4.00″ |
| Lonedell | 7 | 2.50″ |
| Union | 7 | 1.00″ |
| Villa Ridge | 6 | 1.75″ |
| Pacific | 5 | 2.00″ |
The season runs March through July: 41 of the 50 hail days on record fall in those 5 months (82%). April is the single busiest month, with 21 of them (42%). That peak sits inside the window rather than at either end. October and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| January | 1 |
| February | 1 |
| March | 5 |
| April | 21 |
| May | 9 |
| June | 3 |
| July | 3 |
| August | 4 |
| September | 2 |
| November | 1 |
That day put 9 reports on the map, the biggest 2.25 inches near Sullivan. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-27 | 2.25″ | 9 |
| 2025-05-16 | 2.00″ | 10 |
| 2025-04-10 | 1.75″ | 1 |
| 2025-03-14 | 2.00″ | 5 |
| 2024-05-26 | 2.00″ | 4 |
| 2024-05-08 | 1.75″ | 6 |
| 2024-04-01 | 1.00″ | 1 |
| 2024-03-14 | 2.50″ | 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 4 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: Warren County (28 hail days), Gasconade County (24) and St. Charles County (55). Franklin County sits in between.
Warren County · Gasconade County · St. Charles County
Back to the Missouri hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Franklin County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.