◆ MAY, OK HAIL HISTORY · HARPER COUNTY
May, OK hail history & hail map
May, Oklahoma has had 7 hail events in the past 5 years, with hail up to 1.75″ (Golf Ball). Most recent: Oct 13, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
7Hail events in the past 5 years
1.75″Largest recorded hail · Golf Ball
1.75″Largest ground report (within 3 mi)
1.00″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over May, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in May
| Date | Peak hail | Sources |
|---|---|---|
| Oct 13, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Mar 10, 2026 | 0.75″ Penny | 1 ground report (max 0.75″) |
| May 16, 2024 | 1.00″ Quarter | Radar 1.00″ |
| Aug 14, 2023 | 0.75″ Penny | Radar 0.75″ |
| Jul 15, 2023 | 0.75″ Penny | Radar 0.75″ |
| Jun 18, 2023 | 1.00″ Quarter | Radar 1.00″ |
| May 15, 2022 | 1.75″ Golf Ball | Radar 1.00″ · 2 ground reports (max 1.75″) |
More Oklahoma hail history
All Oklahoma cities & hail days →
Events count days with NOAA MRMS radar hail over May (36.667, -99.642) or an NWS / CoCoRaHS hail report within 3 miles. Data window: NOAA MRMS radar hail swaths Oct 2021 – Nov 2026; NWS / NCEI Storm Events reports Nov 2024 – Jul 2026; CoCoRaHS volunteer reports Oct 2021 – present. Radar hail sizes are estimates, not ground truth; hail at any single address can differ.