◆ ARLINGTON HEIGHTS, IL HAIL HISTORY · COOK COUNTY
Arlington Heights, IL hail history & hail map
Arlington Heights, Illinois has had 6 hail events in the past 5 years, with hail up to 1.75″ (Golf Ball). Most recent: Aug 16, 2025. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
6Hail events in the past 5 years
1.75″Largest recorded hail · Golf Ball
1.75″Largest ground report (within 3 mi)
0.75″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Arlington Heights, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Arlington Heights
| Date | Peak hail | Sources |
|---|---|---|
| Aug 16, 2025 | 1.25″ Half Dollar | Radar 0.75″ · 4 ground reports (max 1.25″) |
| Aug 28, 2024 | 0.75″ Penny | Radar 0.75″ |
| Apr 20, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Apr 4, 2023 | 1.75″ Golf Ball | 4 ground reports (max 1.75″) |
| Jan 3, 2023 | 0.70″ Small | 1 ground report (max 0.70″) |
| Feb 22, 2022 | 0.38″ Small | 2 ground reports (max 0.38″) |
More Illinois hail history
All Illinois cities & hail days →
Events count days with NOAA MRMS radar hail over Arlington Heights (42.101, -88.002) 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.