NOAA weather radar recorded hail over Naperville, IL on 80 separate days between 2007 and 2026 — an average of 4.0 hail days a year.
Most recent hail day on record: 2026-07-03 (GMT — an evening storm is logged under the next day's date). See which other cities were hit that day, or check a specific address.
Check a specific address →| Year | Days with hail | Radar detections |
|---|---|---|
| 2026 | 6 | 27 |
| 2025 | 5 | 15 |
| 2024 | 4 | 40 |
| 2023 | 3 | 18 |
| 2022 | 2 | 7 |
| 2021 | 2 | 5 |
| 2020 | 2 | 3 |
| 2019 | 4 | 28 |
| 2018 | 5 | 25 |
| 2017 | 5 | 7 |
| 2016 | 2 | 8 |
| 2015 | 6 | 31 |
| 2014 | 5 | 35 |
| 2013 | 2 | 2 |
| 2012 | 5 | 11 |
| 2011 | 8 | 23 |
| 2010 | 5 | 22 |
| 2009 | 2 | 8 |
| 2008 | 3 | 6 |
| 2007 | 4 | 19 |
20 of the last 20 years had at least one hail day. The worst was 2011, with 8 hail days and 23 radar detections.
At 4.0 hail days a year this area is very-high frequency for hail. Insurers price hail regionally, and a roof here will see storms — but a radar detection over the tile is not proof your roof was hit.
What this page is, precisely. These counts describe a 0.1° grid tile — roughly 7 miles north to south — containing Naperville, IL, not a specific address. A detection inside the tile does not prove hail fell on any particular roof, and no detection does not prove none fell. Radar resolution is finest near the radar and coarsens with distance. This is a screening tool, not an insurance claim, a loss report, or an engineering inspection.
NOAA NCEI Severe Weather Data Inventory,
dataset nx3hail — NEXRAD Level-III Hail Detection Algorithm output. Public domain US
government data. Retrieved 2026-07-27.
All cities · Every storm date · Hail history by address · Flood zone, earthquake hazard and climate for the same address
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