The most recent reported hail day was 2025-09-08, 326 days ago. Ellis County is hit in most years, and usually several times over. The largest stone on record here is 4.5 inches, a softball and 4.5 times the National Weather Service's 1 inch severe criterion, reported on 2025-05-18 near Arnett.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Oklahoma. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2025-09-08, around Catesby. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Ellis 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 43 separate hail days here since 2010 -- 2.5 a year over 17 years of record. Those days carry 81 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2025, with 5 hail days. The last five years track the long-run rate, with 11 days since 2022.
Roof-killing hail is routine here: 14 of the 43 days reached 2 inches or more, 33% of them, the last on 2025-05-18. They land in the same month as everything else, May. More than half of every hail day on record here -- 23 of 43 -- reached golf-ball size, 1.75 inches or bigger.
Across the whole of Oklahoma, see the Oklahoma hail map and history.
Reports cluster nearest Arnett -- 16 of the county's 43 hail days -- then Shattuck (11), Harmon (7), Fargo (7) and Gage (5). Beyond those, NOAA names Catesby, Camargo and Vici on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Shattuck | 4 | 1.00″ |
| Fargo | 3 | 2.75″ |
| Arnett | 3 | 1.75″ |
| 4 ENE Arnett | 2 | 4.50″ |
| 3 W Arnett | 2 | 4.25″ |
The season runs April through June: 35 of the 43 hail days on record fall in those 3 months (81%). May is the single busiest month, with 19 of them (44%). That peak sits inside the window rather than at either end. January, February and December are the only months that have never produced a reported hail day.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 8 |
| May | 19 |
| June | 8 |
| July | 1 |
| August | 2 |
| September | 2 |
| October | 1 |
| November | 1 |
That day put 1 report on the map, the biggest 1.75 inches near Catesby. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-09-08 | 1.75″ | 1 |
| 2025-06-17 | 1.25″ | 3 |
| 2025-05-28 | 1.50″ | 1 |
| 2025-05-24 | 1.00″ | 1 |
| 2025-05-18 | 4.50″ | 13 |
| 2024-05-28 | 1.00″ | 1 |
| 2024-05-25 | 3.50″ | 4 |
| 2024-05-15 | 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 4.5 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, over the state line included: Woodward County (49 hail days), Roger Mills County (56), Harper County (32), Lipscomb County, Texas (66) and Hemphill County, Texas (45). Ellis County sits in between.
Woodward County · Roger Mills County · Harper County · Lipscomb County, Texas · Hemphill County, Texas
Back to the Oklahoma hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Ellis County, Oklahoma only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.