Harmon County was hit as recently as 2026-06-23, 38 days ago. Harmon County has recorded hail in nearly every year on the archive. The largest stone on record here is 3.2 inches and 3.2 times the National Weather Service's 1 inch severe criterion, reported on 2019-04-03 near Gould.
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 2026-06-23, around Vinson. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Harmon 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 33 separate hail days here since 2010 -- 1.9 a year over 17 years of record. Those days carry 60 separate reports between them, two or three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2012, with 5 hail days. The last five years have been quieter than the long run: 5 days since 2022, against 2.3 a year before that.
8 of the 33 days reached 2 inches or more -- 24%, or about one hail day in 4, the last on 2024-05-23. They land in the same month as everything else, May. More than half of every hail day on record here -- 19 of 33 -- reached golf-ball size, 1.75 inches or bigger.
Across the whole of Oklahoma, see the Oklahoma hail map and history.
Reports cluster nearest Hollis -- 21 of the county's 33 hail days -- then Gould (7), Vinson (6), Madge (5) and Mcqueen (2). That one town is named on 64% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Hollis | 7 | 1.75″ |
| Gould | 4 | 2.50″ |
| 1 W Hollis | 4 | 2.25″ |
| 2 S Hollis | 3 | 1.75″ |
| 2 E Madge | 2 | 2.50″ |
The season runs April through June: 27 of the 33 hail days on record fall in those 3 months (82%). May is the single busiest month, with 13 of them (39%). That peak sits inside the window rather than at either end. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 2 |
| April | 8 |
| May | 13 |
| June | 6 |
| July | 1 |
| October | 1 |
| November | 1 |
That day put 1 report on the map, the biggest 1 inch near Vinson. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-23 | 1.00″ | 1 |
| 2024-05-23 | 2.50″ | 6 |
| 2024-02-02 | 1.25″ | 1 |
| 2023-06-15 | 1.25″ | 1 |
| 2022-05-04 | 1.75″ | 1 |
| 2020-05-07 | 3.00″ | 1 |
| 2019-04-03 | 3.20″ | 6 |
| 2018-05-14 | 1.00″ | 1 |
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 3.2 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, over the state line included: Greer County (33 hail days), Jackson County (54), Beckham County (55), Collingsworth County, Texas (47) and Childress County, Texas (51). Harmon County sits in between.
Greer County · Jackson County · Beckham County · Collingsworth County, Texas · Childress 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, Harmon County, Oklahoma only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.