Hail history for Mercer County, Ohio
Every NOAA hail report filed in Mercer County since 1980, with preliminary National Weather Service reports to November 3, 2026.
Readout · Mercer County
- Last hail
- Aug 12, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 4
- since Nov 3, 2021 · 7 reports
- Largest ever
- 2.50 in
- tennis ball · Jul 10, 2017
76 reports on 55 days since 1980 · #58 of 89 Ohio counties
Hail map · Mercer County
- 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 Mercer County
The latest hail report in Mercer County is from August 12, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 4 separate hail days; the biggest stones in that time were 1.50 in on March 22, 2026.
Over the 20 years 2006–2025, Mercer County logged 39 reports on 28 hail days, about 1.9 reports a year. That is 20% less than the median Ohio county (2.5 a year) and ranks #58 of 89 Ohio counties for all-time reports. Mercer County holds 1% of all 9,190 hail reports in Ohio.
1% of reports with a size were 2 inches (hen egg) or larger, against 3% for the median Ohio county. The largest hail on record here is 2.50 in (tennis ball) on July 10, 2017 near Mendon.
Reports were down 56% in 2016–2025 (12) compared with 2006–2015 (27). The busiest year was 2011, with 7 reports on 4 days. Hail here peaks in June (25% of reports); 67% fall between April and June.
Reports a year 2006–2025 average
- Mercer County 1.9
- Median Ohio county 2.5
Hail days 2006–2025
- Mercer County 28
- Median Ohio county 31
Share 2 in or larger of sized reports
- Mercer County 1%
- Median Ohio county 3%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2 | 2 | 4 | ||||||||||
| 2025 | 1 | 1 | |||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | 2 | ||||||||||
| 2019 | 1 | 1 | 2 | ||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 3 | 2 | 5 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 12, 2026 | 2 | 1.00 in | View |
| Mar 22, 2026 | 2 | 1.50 in | — |
| Apr 2, 2025 | 1 | 0.88 in | — |
| Mar 14, 2024 | 2 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | Time · source |
|---|---|---|---|
| Jul 10, 2017 | 2.50 intennis ball | Mendon | 21:31 local · NCEI |
| Apr 23, 2011 | 1.75 ingolf ball | Mendon | 00:10 local · NCEI |
| Jun 11, 1998 | 1.75 ingolf ball | Coldwater | 21:00 local · NCEI |
| May 31, 1998 | 1.75 ingolf ball | 7 E Celina | 15:20 local · NCEI |
| May 1, 1996 | 1.75 ingolf ball | Celina | 14:30 local · NCEI |
Size of every report
- Under 1 in 44 58%
- 1–2 in 31 41%
- 2 in + 1 1%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Aug 12, 2026 | 1.00 inquarter | Celina | — | 12:09 UTC · NWS prelim. |
| Aug 12, 2026 | 1.00 inquarter | Celina | — | 12:08 UTC · NWS prelim. |
| Mar 22, 2026 | 1.00 inquarter | 0.69 S St Sebastian | — | 19:54 local · NCEI |
| Mar 22, 2026 | 1.50 inping pong ball | Mendon | — | 18:52 local · NCEI |
| Apr 2, 2025 | 0.88 innickel | 0.87 NW St Henry | — | 08:00 local · NCEI |
| Mar 14, 2024 | 1.00 inquarter | Chattanooga | $1K | 17:43 local · NCEI |
| Mar 14, 2024 | 1.00 inquarter | 0.52 W Chattanooga | — | 17:42 local · NCEI |
| Jul 8, 2020 | 1.00 inquarter | 2.51 ESE Durbin | — | 16:43 local · NCEI |
| Apr 8, 2020 | 0.88 innickel | 1.26 WNW Chattanooga | — | 00:20 local · NCEI |
| Aug 8, 2019 | 1.50 inping pong ball | 0.87 NE Celina | — | 19:25 local · NCEI |
| May 16, 2019 | 1.00 inquarter | Celina | — | 22:20 local · NCEI |
| Jul 16, 2017 | 1.00 inquarter | 0.87 NW Maria Stein | — | 19:50 local · NCEI |
Cities and towns in Mercer 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 |
|---|---|---|---|
| Maria Stein | 9 | 9 | Mar 22, 2026 |
| Mendon | 9 | 7 | Mar 22, 2026 |
| Fort Recovery | 4 | 4 | Sep 4, 2015 |
| Rockford | 4 | 4 | Jun 5, 2017 |
| Coldwater | 2 | 2 | Jul 8, 2020 |
| Montezuma | 2 | 2 | May 25, 2006 |
| Burkettsville | 1 | 1 | May 7, 2012 |
Questions about hail in Mercer County
How often does it hail in Mercer County, Ohio?
76 hail reports have been logged in Mercer County since 1980. Over the 20 years 2006–2025 that averages 1.9 reports a year. That ranks #58 of 89 Ohio counties by number of reports.
When is hail season in Mercer County?
Most reports come in June, May, April. June alone accounts for 25% of all reports.
What is the largest hail recorded in Mercer County?
2.50 in (tennis ball size) on July 10, 2017 near Mendon. 1% of reports here were 2 inches or larger.
When did it last hail in Mercer County?
The most recent report in this data is from August 12, 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 Mercer County had in the last five years?
4 separate days with hail reports since November 3, 2021, adding up to 7 reports. The most recent was August 12, 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.