◆ ROY, ID HAIL HISTORY · POWER COUNTY
Roy, ID hail history & hail map
Roy, Idaho has had 3 hail events in the past 5 years, with hail up to 1.25″ (Half Dollar). Most recent: Sep 18, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
3Hail events in the past 5 years
1.25″Largest recorded hail · Half Dollar
1.25″Largest ground report (within 3 mi)
0.75″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Roy, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Roy
| Date | Peak hail | Sources |
|---|---|---|
| Sep 18, 2026 | 0.75″ Penny | Radar 0.75″ |
| Sep 7, 2025 | 1.25″ Half Dollar | Radar 0.75″ · 2 ground reports (max 1.25″) |
| May 15, 2023 | 0.75″ Penny | Radar 0.75″ |
More Idaho hail history
All Idaho cities & hail days →
Events count days with NOAA MRMS radar hail over Roy (42.421, -112.889) 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.