The most recent reported hail day was 2026-04-27, 95 days ago. Callaway County is hit in most years, often more than once. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2018-05-14 near New Bloomfield.
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 New Bloomfield. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Callaway 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 37 separate hail days here since 2010 -- 2.2 a year over 17 years of record. Those days carry 84 separate reports between them, two or three on a typical one. 3 of those 17 years produced none at all. One year dominates the record: 2011 alone produced 9 of the 37 days. The last five years track the long-run rate, with 8 days since 2022.
Most hail here stays under 2 inches: only 2 of the 37 days on record passed it, 5%, the last on 2018-05-14. They land in the same month as everything else, April. 14 of the 37 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 Fulton -- 18 of the county's 37 hail days -- then New Bloomfield (8), Holts Summit (6), Williamsburg (5) and Kingdom City (4). That one town is named on 49% of them. Beyond those, NOAA names Mokane, Carrington, Guthrie, Lake Mykee and Auxvasse on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Fulton | 10 | 1.75″ |
| New Bloomfield | 6 | 1.75″ |
| Williamsburg | 4 | 1.75″ |
| Holts Summit | 4 | 1.50″ |
| Mokane | 4 | 1.00″ |
The season runs March through June: 33 of the 37 hail days on record fall in those 4 months (89%). April is the single busiest month, with 13 of them (35%). That peak sits inside the window rather than at either end. Hail has also been reported in July, October and December, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 9 |
| April | 13 |
| May | 7 |
| June | 4 |
| July | 2 |
| October | 1 |
| December | 1 |
That day put 1 report on the map, the biggest 1.75 inches near New Bloomfield. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-27 | 1.75″ | 1 |
| 2025-03-14 | 1.50″ | 1 |
| 2024-03-14 | 1.75″ | 7 |
| 2023-07-12 | 1.00″ | 1 |
| 2023-06-30 | 1.00″ | 1 |
| 2023-04-20 | 1.00″ | 1 |
| 2023-04-04 | 1.00″ | 1 |
| 2023-03-31 | 1.75″ | 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 2.5 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: Boone County (38 hail days), Osage County (19) and Cole County (33). Callaway County sits in between.
Boone County · Osage County · Cole 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, Callaway County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.