◆ KNOXVILLE ARPT, IA HAIL HISTORY · MARION COUNTY
Knoxville Arpt, IA hail history & hail map
Knoxville Arpt, Iowa has had 9 hail events in the past 5 years, with hail up to 1.75″ (Golf Ball). Most recent: Oct 9, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
9Hail events in the past 5 years
1.75″Largest recorded hail · Golf Ball
1.75″Largest ground report (within 3 mi)
1.25″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Knoxville Arpt, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Knoxville Arpt
| Date | Peak hail | Sources |
|---|---|---|
| Oct 9, 2026 | 0.75″ Penny | Radar 0.75″ |
| Jul 21, 2026 | 1.00″ Quarter | Radar 1.00″ |
| Jun 11, 2026 | 1.75″ Golf Ball | 3 ground reports (max 1.75″) |
| Jun 6, 2026 | 1.25″ Half Dollar | Radar 1.25″ |
| May 19, 2025 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Jul 31, 2024 | 1.25″ Half Dollar | Radar 1.25″ |
| Jul 17, 2023 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Mar 31, 2023 | 1.25″ Half Dollar | 3 ground reports (max 1.25″) |
| Aug 19, 2022 | 0.75″ Penny | Radar 0.75″ |
More Iowa hail history
Events count days with NOAA MRMS radar hail over Knoxville Arpt (41.290, -93.140) 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.