Sullivan County was hit as recently as 2026-05-16, 76 days ago. Sullivan County is hit in about half the years on record. 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 2024-05-26 near Milan.
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 2026-05-16, around Osgood. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Sullivan 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. They carry 37 reports in total: most hail days here are logged from a single spot. 7 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: 9 days since 2022, against 1.0 a year before that.
Most hail here stays under 2 inches: only 1 of the 21 days on record passed it, 5%, the last on 2024-05-26. Those big days do not follow the county's usual calendar: most of them fall in May, not June. Golf-ball size is rarer still: 1.75 inches or more on 5 of the 21 days.
Across the whole of Missouri, see the Missouri hail map and history.
Reports cluster nearest Milan -- 9 of the county's 21 hail days -- then Osgood (3), Green City (3), Humphreys (2) and Winigan (2). That one town is named on 43% of them. Beyond those, NOAA names Newtown and Harris on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Milan | 5 | 1.75″ |
| Green City | 2 | 1.50″ |
| Newtown | 2 | 1.50″ |
| 1 NE Milan | 1 | 2.00″ |
| 1 E Osgood | 1 | 1.75″ |
The season runs March through June: 20 of the 21 hail days on record fall in those 4 months (95%). June is the single busiest month, with 8 of them (38%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in July, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| March | 5 |
| April | 4 |
| May | 3 |
| June | 8 |
| July | 1 |
That day put 3 reports on the map, the biggest 1.75 inches near Osgood. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-05-16 | 1.75″ | 3 |
| 2026-04-17 | 1.50″ | 2 |
| 2026-03-10 | 1.00″ | 1 |
| 2024-05-26 | 2.00″ | 3 |
| 2024-04-27 | 1.00″ | 1 |
| 2024-04-16 | 1.25″ | 1 |
| 2023-03-31 | 1.00″ | 1 |
| 2022-05-17 | 1.00″ | 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 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: Putnam County (16 hail days), Grundy County (33) and Mercer County (14). Sullivan County sits in between.
Putnam County · Grundy County · Mercer 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, Sullivan County, Missouri only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.