DeKalb County, Missouri Hail Map & History
DeKalb County was hit as recently as 2026-09-15, 45 days ago. DeKalb 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 2012-05-06 near Stewartsville.
Hail size, inches
- 0.25 in, pea
- 0.75 in, penny
- 1 in, quarter
- 1.25 in, half dollar
- 1.5 in, ping pong ball
- 1.75 in, golf ball
- 2 in, hen egg
- 2.5 in, tennis ball
- 3 in and up, teacup
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 2026-09-15, around Maysville. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls DeKalb 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 ->How often it hails in DeKalb County
NOAA's Storm Prediction Center has logged 18 separate hail days here since 2010 -- 1.1 a year over 17 years of record. Those days carry 35 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 2026, with 3 hail days. The last five years have run hotter than the long-run rate: 7 days since 2022, against 0.9 a year before that.
2 of the 18 days reached 2 inches or more -- 11%, or about one hail day in 9, the last on 2019-05-14. Those big days do not follow the county's usual calendar: most of them fall in May, not April. Golf-ball size is rarer still: 1.75 inches or more on 4 of the 18 days.
Across the whole of Missouri, see the Missouri hail map and history.
Hardest-hit places in DeKalb County
Reports cluster nearest Maysville -- 11 of the county's 18 hail days -- then Stewartsville (4), Cameron (4) and Osborn (2). That one town is named on 61% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Maysville | 7 | 1.75″ |
| Stewartsville | 3 | 2.75″ |
| 1 S Maysville | 3 | 2.50″ |
| 2 Nw Cameron | 1 | 2.50″ |
| 1 N Cameron | 1 | 1.75″ |
When it hails in DeKalb County
The season runs March through July: 15 of the 18 hail days on record fall in those 5 months (83%). April is the single busiest month, with 6 of them (33%). That peak sits inside the window rather than at either end. Hail has also been reported in August and September, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 6 |
| May | 4 |
| June | 3 |
| July | 1 |
| August | 1 |
| September | 2 |
Recent DeKalb County hail days
That day put 1 report on the map, the biggest 1 inch near Maysville. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-09-15 | 1.00″ | 1 |
| 2026-04-17 | 1.00″ | 1 |
| 2026-04-15 | 1.50″ | 6 |
| 2024-08-15 | 1.00″ | 1 |
| 2023-06-17 | 1.75″ | 1 |
| 2022-06-11 | 1.00″ | 1 |
| 2022-04-23 | 1.00″ | 1 |
| 2021-09-17 | 1.00″ | 1 |
How to read the DeKalb County map
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Deep violet is about an inch, the violet grows lighter as the hail grows, and pale lilac to near-white is 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.75 inches, which is the pale lilac band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own: Clinton County (23 hail days), Daviess County (30) and Caldwell County (18). DeKalb County sits in between.
Clinton County · Daviess County · Caldwell County
Back to the Missouri hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, DeKalb County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.