◆ ARNOLD, MO HAIL HISTORY · JEFFERSON COUNTY
Arnold, MO hail history & hail map
Arnold, Missouri has had 11 hail events in the past 5 years, with hail up to 2.00″ (Golf Ball). Most recent: May 18, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
11Hail events in the past 5 years
2.00″Largest recorded hail · Golf Ball
2.00″Largest ground report (within 3 mi)
1.00″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Arnold, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Arnold
| Date | Peak hail | Sources |
|---|---|---|
| May 18, 2026 | 0.70″ Small | 1 ground report (max 0.70″) |
| Apr 2, 2025 | 0.88″ Nickel | 1 ground report (max 0.88″) |
| Mar 15, 2025 | 2.00″ Golf Ball | Radar 1.00″ · 22 ground reports (max 2.00″) |
| Mar 14, 2024 | 1.75″ Golf Ball | 12 ground reports (max 1.75″) |
| Mar 13, 2024 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Jul 17, 2023 | 1.00″ Quarter | Radar 1.00″ |
| Jul 14, 2023 | 0.25″ Small | 1 ground report (max 0.25″) |
| Jul 1, 2023 | 1.00″ Quarter | Radar 1.00″ |
| Jun 30, 2023 | 1.00″ Quarter | 2 ground reports (max 1.00″) |
| Apr 1, 2023 | 0.25″ Small | 1 ground report (max 0.25″) |
| Dec 17, 2021 | 0.25″ Small | 1 ground report (max 0.25″) |
More Missouri hail history
All Missouri cities & hail days →
Events count days with NOAA MRMS radar hail over Arnold (38.450, -90.360) 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.