Hail history for Mendota, Illinois
NOAA hail reports in and within about 5 km (3 miles) of Mendota since 1957, with preliminary reports to November 3, 2026.
Readout · Mendota
- Last hail
- Aug 21, 2026
- 1.50 in, ping pong ball size · preliminary
- Hail days, last 5 years
- 5
- since Nov 3, 2021 · 10 reports
- Largest ever
- 2.00 in
- hen egg · May 14, 1985
20 reports on 15 days since 1957 · #115 of 378 Illinois places
Hail map · Mendota
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Mendota
The latest hail report in and around Mendota is from August 21, 2026, 1.50 in (ping pong ball size). Since November 3, 2021 there have been 5 separate hail days; the biggest stones in that time were 1.75 in on April 19, 2023.
Over the 20 years 2006–2025, Mendota logged 14 reports on 9 hail days, about 0.7 reports a year. That is 40% more than the median Illinois town on this site (0.5 a year) and ranks #115 of 378 Illinois cities and towns on this site for all-time reports. Mendota accounts for 11% of the 176 reports filed in LaSalle 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 2.00 in (hen egg) on May 14, 1985.
Reports were up 267% in 2016–2025 (11) compared with 2006–2015 (3). The busiest year was 2023, with 8 reports on 3 days. Hail here peaks in April (40% of reports); 65% fall between April and June.
Reports a year 2006–2025 average
- Mendota 0.7
- LaSalle County 5.0
- Median Illinois town on this site 0.5
Hail days 2006–2025
- Mendota 9
- LaSalle County 53
- Median Illinois town on this site 8
Share 2 in or larger of sized reports
- Mendota 5%
- LaSalle County 7%
- 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 | |||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 7 | 1 | 8 | ||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 21, 2026 | 1 | 1.50 in | View |
| Mar 19, 2025 | 1 | 1.00 in | — |
| May 7, 2023 | 1 | 1.00 in | — |
| Apr 19, 2023 | 4 | 1.75 in | — |
| Apr 4, 2023 | 3 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 14, 1985 | 2.00 inhen egg | — | La Salle | —14 injured | 18:30 local · NCEI |
| Apr 19, 2023 | 1.75 ingolf ball | 0.86 NW Meriden | La Salle | — | 14:43 local · NCEI |
| Apr 19, 2023 | 1.75 ingolf ball | 3.4 N Mendota | La Salle | — | 14:33 local · NCEI |
| Apr 4, 2023 | 1.75 ingolf ball | Mendota | La Salle | — | 10:44 local · NCEI |
| May 30, 1991 | 1.75 ingolf ball | — | La Salle | — | 19:36 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 5 25%
- 1–2 in 14 70%
- 2 in + 1 5%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 21, 2026 | 1.50 inping pong ball | 3 N Mendota | La Salle | 23:05 UTC · NWS prelim. |
| Mar 19, 2025 | 1.00 inquarter | 2.59 SW Meriden | La Salle | 14:26 local · NCEI |
| May 7, 2023 | 1.00 inquarter | 0.59 NNE Mendota | La Salle | 18:00 local · NCEI |
| Apr 19, 2023 | 1.75 ingolf ball | 0.86 NW Meriden | La Salle | 14:43 local · NCEI |
| Apr 19, 2023 | 1.00 inquarter | 0.49 NNE Mendota | La Salle | 14:34 local · NCEI |
| Apr 19, 2023 | 1.75 ingolf ball | 3.4 N Mendota | La Salle | 14:33 local · NCEI |
| Apr 19, 2023 | 1.50 inping pong ball | 2.63 NW Meriden | La Salle | 14:32 local · NCEI |
| Apr 4, 2023 | 1.00 inquarter | 3 E Mendota | La Salle | 11:14 local · NCEI |
| Apr 4, 2023 | 1.00 inquarter | 0.69 S Mendota | La Salle | 11:01 local · NCEI |
| Apr 4, 2023 | 1.75 ingolf ball | Mendota | La Salle | 10:44 local · NCEI |
| Apr 28, 2020 | 0.88 innickel | Mendota | La Salle | 15:27 local · NCEI |
| Feb 28, 2017 | 1.00 inquarter | Mendota | La Salle | 20:55 local · NCEI |
Hail history near Mendota
Questions about hail in Mendota
How often does it hail in Mendota, Illinois?
20 hail reports have been logged in and within about 5 km (3 miles) of Mendota since 1957. Over the 20 years 2006–2025 that averages 0.7 reports a year. That ranks #115 of 378 Illinois places by number of reports.
When is hail season in Mendota?
Most reports come in April, May, July. April alone accounts for 40% of all reports.
What is the largest hail recorded in Mendota?
2.00 in (hen egg size) on May 14, 1985. 5% of reports here were 2 inches or larger.
When did it last hail in Mendota?
The most recent report in this data is from August 21, 2026 (1.50 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Mendota had in the last five years?
5 separate days with hail reports since November 3, 2021, adding up to 10 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.