Hail history for DeKalb County, Illinois
Every NOAA hail report filed in DeKalb County since 1970, with preliminary National Weather Service reports to November 3, 2026.
Readout · DeKalb County
- Last hail
- Aug 21, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 11
- since Nov 3, 2021 · 18 reports
- Largest ever
- 2.75 in
- baseball · Apr 4, 2023
90 reports on 65 days since 1970 · #52 of 103 Illinois counties
Hail map · DeKalb County
- 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 DeKalb County is from August 21, 2026. A local roofer can check and document it at no cost.
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What the record says about DeKalb County
The latest hail report in DeKalb County is from August 21, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 11 separate hail days; the biggest stones in that time were 2.75 in on April 4, 2023.
Over the 20 years 2006–2025, DeKalb County logged 50 reports on 36 hail days, about 2.5 reports a year. That is about the same as the median Illinois county (2.6 a year) and ranks #52 of 103 Illinois counties for all-time reports. DeKalb County holds 1% of all 12,418 hail reports in Illinois.
3% of reports with a size were 2 inches (hen egg) or larger, against 5% for the median Illinois county. The largest hail on record here is 2.75 in (baseball) on April 4, 2023 near Sandwich.
Reports held about level in 2016–2025 (24) compared with 2006–2015 (26). The busiest year was 2026, with 8 reports on 5 days. Hail here peaks in April (22% of reports); 59% fall between April and June.
Reports a year 2006–2025 average
- DeKalb County 2.5
- Median Illinois county 2.6
Hail days 2006–2025
- DeKalb County 36
- Median Illinois county 34
Share 2 in or larger of sized reports
- DeKalb County 3%
- Median Illinois county 5%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | 4 | 1 | 1 | 8 | ||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 3 | 1 | 4 | ||||||||||
| 2023 | 3 | 1 | 4 | ||||||||||
| 2022 | 1 | 1 | 2 | ||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 3 | 3 | |||||||||||
| 2019 | 1 | 2 | 3 | ||||||||||
| 2018 | 1 | 2 | 3 | ||||||||||
| 2017 | 2 | 2 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 21, 2026 | 1 | 1.00 in | View |
| Jun 24, 2026 | 1 | 1.00 in | — |
| Apr 14, 2026 | 4 | 1.25 in | — |
| Mar 31, 2026 | 1 | 1.00 in | — |
| Mar 10, 2026 | 1 | 1.00 in | — |
| Mar 4, 2024 | 1 | 1.00 in | — |
| Feb 27, 2024 | 3 | 2.00 in | — |
| Jul 28, 2023 | 1 | 1.00 in | — |
| Apr 4, 2023 | 3 | 2.75 in | — |
| Aug 28, 2022 | 1 | 1.50 in | — |
| Jul 5, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Apr 4, 2023 | 2.75 inbaseball | Sandwich | 11:45 local · NCEI |
| Feb 27, 2024 | 2.00 inhen egg | Shabbona | 18:37 local · NCEI |
| Apr 4, 2023 | 2.00 inhen egg | 2 W Waterman | 11:55 local · NCEI |
| Apr 7, 2020 | 1.75 ingolf ball | Sycamore | 19:46 local · NCEI |
| Apr 7, 2020 | 1.75 ingolf ball | 1.47 W Sycamore | 19:42 local · NCEI |
Size of every report
- Under 1 in 35 39%
- 1–2 in 52 58%
- 2 in + 3 3%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Aug 21, 2026 | 1.00 inquarter | 3 E Sycamore | 20:09 UTC · NWS prelim. |
| Jun 24, 2026 | 1.00 inquarter | 2.96 NNE Malta | 17:26 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 1.24 NE Dekalb | 20:47 local · NCEI |
| Apr 14, 2026 | 1.25 inhalf dollar | 1.47 NNE Dekalb | 20:42 local · NCEI |
| Apr 14, 2026 | 1.25 inhalf dollar | Dekalb | 20:40 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 1.72 NW Dekalb | 20:38 local · NCEI |
| Mar 31, 2026 | 1.00 inquarter | 0.86 NW Sandwich | 07:29 local · NCEI |
| Mar 10, 2026 | 1.00 inquarter | Somonauk | 18:34 local · NCEI |
| Mar 4, 2024 | 1.00 inquarter | 3.3 WSW Kirkland | 18:03 local · NCEI |
| Feb 27, 2024 | 1.25 inhalf dollar | 0.86 NE Somonauk | 19:06 local · NCEI |
| Feb 27, 2024 | 1.00 inquarter | 2.32 NNW Somonauk | 19:01 local · NCEI |
| Feb 27, 2024 | 2.00 inhen egg | Shabbona | 18:37 local · NCEI |
Cities and towns in DeKalb County
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Sandwich | 6 | 5 | Mar 31, 2026 |
| Genoa | 5 | 5 | Jul 5, 2022 |
| Malta | 5 | 5 | Jun 24, 2026 |
| Somonauk | 5 | 4 | Mar 10, 2026 |
| Cortland | 3 | 3 | Sep 22, 2006 |
| Shabbona | 3 | 3 | Feb 27, 2024 |
| Rosemont | 2 | 2 | Apr 5, 2010 |
| Creston | 1 | 1 | Apr 14, 1996 |
| Kirkland | 1 | 1 | Mar 4, 2024 |
Questions about hail in DeKalb County
How often does it hail in DeKalb County, Illinois?
90 hail reports have been logged in DeKalb County since 1970. Over the 20 years 2006–2025 that averages 2.5 reports a year. That ranks #52 of 103 Illinois counties by number of reports.
When is hail season in DeKalb County?
Most reports come in April, May, June. April alone accounts for 22% of all reports.
What is the largest hail recorded in DeKalb County?
2.75 in (baseball size) on April 4, 2023 near Sandwich. 3% of reports here were 2 inches or larger.
When did it last hail in DeKalb County?
The most recent report in this data is from August 21, 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 DeKalb County had in the last five years?
11 separate days with hail reports since November 3, 2021, adding up to 18 reports. The most recent was August 21, 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.