◆ ALTAMONT, IL HAIL HISTORY · EFFINGHAM COUNTY
Altamont, IL hail history & hail map
Altamont, Illinois has had 6 hail events in the past 5 years, with hail up to 1.25″ (Half Dollar). Most recent: Jun 18, 2026. 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
1.25″Largest recorded hail · Half Dollar
1.25″Largest ground report (within 3 mi)
1.00″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Altamont, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Altamont
| Date | Peak hail | Sources |
|---|---|---|
| Jun 18, 2026 | 1.00″ Quarter | Radar 1.00″ |
| Oct 18, 2025 | 0.75″ Penny | 1 ground report (max 0.75″) |
| Sep 20, 2025 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| May 16, 2025 | 1.00″ Quarter | Radar 1.00″ |
| Mar 15, 2025 | 1.25″ Half Dollar | 1 ground report (max 1.25″) |
| Aug 7, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
More Illinois hail history
All Illinois cities & hail days →
Events count days with NOAA MRMS radar hail over Altamont (39.060, -88.750) 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.