Hail history for Naperville, Illinois
NOAA hail reports in and within about 5 km (3 miles) of Naperville since 1970, with preliminary reports to November 3, 2026.
Readout · Naperville
- Last hail
- Aug 9, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 6
- since Nov 3, 2021 · 8 reports
- Largest ever
- 2.75 in
- baseball · Jun 22, 1984
42 reports on 31 days since 1970 · #19 of 378 Illinois places
Hail map · Naperville
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Naperville is from August 9, 2026. A local roofer can check and document it at no cost.
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What the record says about Naperville
The latest hail report in and around Naperville is from August 9, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 6 separate hail days; the biggest stones in that time were 1.50 in on August 16, 2025.
Over the 20 years 2006–2025, Naperville logged 25 reports on 17 hail days, about 1.3 reports a year. That is 2.5 times the median Illinois town on this site (0.5 a year) and ranks #19 of 378 Illinois cities and towns on this site for all-time reports. Naperville accounts for 15% of the 281 reports filed in DuPage County.
5% of reports with a size were 2 inches (hen egg) or larger, against 4% for the median Illinois town on this site. The largest hail on record here is 2.75 in (baseball) on June 22, 1984.
Reports were down 61% in 2016–2025 (7) compared with 2006–2015 (18). The busiest year was 2013, with 5 reports on 4 days. Hail here peaks in May (29% of reports); 55% fall between April and June.
Reports a year 2006–2025 average
- Naperville 1.3
- DuPage County 7.4
- Median Illinois town on this site 0.5
Hail days 2006–2025
- Naperville 17
- DuPage County 60
- Median Illinois town on this site 8
Share 2 in or larger of sized reports
- Naperville 5%
- DuPage County 5%
- Median Illinois town on this site 4%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | 2 | ||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 2 | 2 | |||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 9, 2026 | 1 | 1.00 in | View |
| Mar 30, 2026 | 1 | 1.00 in | — |
| Aug 16, 2025 | 1 | 1.50 in | — |
| Feb 27, 2024 | 2 | 1.00 in | — |
| Apr 4, 2023 | 2 | 1.50 in | — |
| Jul 23, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jun 22, 1984 | 2.75 inbaseball | — | Will | 15:28 local · NCEI |
| Sep 11, 2013 | 2.00 inhen egg | 2.04 WNW Plainfield Clow Arpt | Will | 14:12 local · NCEI |
| Jun 12, 2013 | 1.75 ingolf ball | Naperville | Du Page | 16:42 local · NCEI |
| Jun 13, 1976 | 1.75 ingolf ball | — | Du Page | 16:00 local · NCEI |
| Aug 16, 2025 | 1.50 inping pong ball | 2.92 WSW Naperville | Du Page | 16:14 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 19 45%
- 1–2 in 21 50%
- 2 in + 2 5%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 9, 2026 | 1.00 inquarter | 3 W Naperville | DuPage | 19:06 UTC · NWS prelim. |
| Mar 30, 2026 | 1.00 inquarter | 1.72 SE Naperville | Du Page | 21:23 local · NCEI |
| Aug 16, 2025 | 1.50 inping pong ball | 2.92 WSW Naperville | Du Page | 16:14 local · NCEI |
| Feb 27, 2024 | 1.00 inquarter | 2.95 SSE Naperville | Du Page | 19:56 local · NCEI |
| Feb 27, 2024 | 1.00 inquarter | 3.17 SSE Naperville | Du Page | 19:49 local · NCEI |
| Apr 4, 2023 | 1.25 inhalf dollar | 2.48 SW Naperville | Du Page | 12:12 local · NCEI |
| Apr 4, 2023 | 1.50 inping pong ball | 3.17 NNE Tamarack | Will | 12:09 local · NCEI |
| Jul 23, 2022 | 1.00 inquarter | Naperville | Will | 09:22 local · NCEI |
| May 27, 2019 | 1.00 inquarter | 3.38 NW Bolingbrook | Du Page | 13:07 local · NCEI |
| May 20, 2014 | 1.50 inping pong ball | 1.8 SE Batavia Jct | Du Page | 18:50 local · NCEI |
| May 20, 2014 | 1.25 inhalf dollar | 1.66 ESE Warrenville | Du Page | 18:32 local · NCEI |
| Sep 11, 2013 | 2.00 inhen egg | 2.04 WNW Plainfield Clow Arpt | Will | 14:12 local · NCEI |
Hail history near Naperville
- Bolingbrook 8 km · 28
- Woodridge 10 km · 15
- Aurora 11 km · 38
- Downers Grove 13 km · 31
- Wheaton 13 km · 16
- Romeoville 14 km · 39
- Plainfield 15 km · 45
- Glen Ellyn 15 km · 16
Questions about hail in Naperville
How often does it hail in Naperville, Illinois?
42 hail reports have been logged in and within about 5 km (3 miles) of Naperville since 1970. Over the 20 years 2006–2025 that averages 1.3 reports a year. That ranks #19 of 378 Illinois places by number of reports.
When is hail season in Naperville?
Most reports come in May, June, August. May alone accounts for 29% of all reports.
What is the largest hail recorded in Naperville?
2.75 in (baseball size) on June 22, 1984. 5% of reports here were 2 inches or larger.
When did it last hail in Naperville?
The most recent report in this data is from August 9, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Naperville had in the last five years?
6 separate days with hail reports since November 3, 2021, adding up to 8 reports. The most recent was August 9, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.