Washtenaw County, Michigan: hail history 2014–2026
Washtenaw County ranks #1 of 7 Michigan counties for hail: 95.6 reports per 1,000 square miles, 69 reports in all. Hail reached 1 inch on 16 days and 1.75 inches on 3. May 27, 2015 near Hudson Mills: 2 inches (a hen egg), the largest stone.
- 69reports
- 16days, 1 in+
- 3days, 1.75 in+
- 2 inlargest stone
Hail since my roof went on: Washtenaw County
Year by year
| Year | Reports | Days 1 in+ | Days 1.75 in+ | Largest |
|---|---|---|---|---|
| 2014 | 7 | 1 | 0 | 1 in |
| 2015 | 14 | 1 | 1 | 2 in |
| 2016 | 5 | 1 | 0 | 1 in |
| 2017 | 8 | 3 | 0 | 1.25 in |
| 2018 | 4 | 1 | 0 | 1 in |
| 2019 | 4 | 2 | 0 | 1.5 in |
| 2020 | 4 | 1 | 0 | 1.5 in |
| 2021 | 3 | 1 | 0 | 1 in |
| 2023 | 16 | 3 | 2 | 2 in |
| 2024 | 2 | 1 | 0 | 1 in |
| 2025 | 1 | 1 | 0 | 1 in |
| 2026 (Jan–Jun) | 1 | 0 | 0 | 0.88 in |
2023 was the busiest year (16 reports) and 2022 the quietest (0). Washtenaw County averaged 4 reports a year from 2020 to 2025, 38% under the 7 of 2014 to 2019. 2026 stands at 1 through June, against a full-year average of 6. Days with 1-inch stones average 1.3 per full year. NOAA puts reported hail damage at $1 million over the period.
Washtenaw County: reports by month
| Jan | 0 |
|---|---|
| Feb | 3 |
| Mar | 5 |
| Apr | 5 |
| May | 16 |
| Jun | 16 |
| Jul | 18 |
| Aug | 2 |
| Sep | 4 |
| Oct | 0 |
| Nov | 0 |
| Dec | 0 |
July is the peak at 26% of reports; May follows with 23%. May to July alone bring 72%. 8 of 69 reports fell outside April to September.
Largest stone: 2 inches
Reported hail locations, Washtenaw County
- 411 to 1.74 in
- 41.75 to 2.74 in, golf ball to tennis ball
- 02.75 in and up, baseball
Largest plotted stone: 2 in. Bigger dots are bigger stones.
45 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.
Sources: NOAA, Census county outlineWashtenaw County’s ten biggest hail days
| Date | Size | Reports | Place |
|---|---|---|---|
| May 27, 2015 | 2 in, a hen egg | 14 | Hudson Mills |
| July 20, 2023 | 2 in, a hen egg | 3 | Ypsilanti |
| June 15, 2023 | 1.75 in, a golf ball | 10 | Delhi Mills · $1 million damage |
| April 7, 2020 | 1.5 in, a ping-pong ball | 4 | Ann Arbor Young Arpt |
| March 14, 2019 | 1.5 in, a ping-pong ball | 3 | Sylvan |
| July 14, 2023 | 1.25 in, a half dollar | 3 | Whittaker |
| September 4, 2017 | 1.25 in, a half dollar | 2 | Dover |
| June 16, 2016 | 1 in, a quarter | 4 | Willis Downwind Fld |
| July 26, 2018 | 1 in, a quarter | 4 | Sharon Hollow |
| July 27, 2014 | 1 in, a quarter | 3 | Manchester |
“One supercell that developed just before the arrival of the squall line produced 2.75 inch (Baseball size) hail over Davison, MI leading to widespread hail damage to vehicles, homes, and businesses.”
NWS report, July 20, 2023
“Hail, measuring between 1-2 inches, emerged as the primary severe weather threat, with several instances of wind damage associated with gusts around 60 mph. The large hail caused extensive crop damage across Livingston county. Notably, an EF1 tornado also developed just west of Lake Erie.”
NWS report, June 15, 2023
Tornadoes and wind in Washtenaw County
2 tornadoes on record in Washtenaw County; the strongest listed is EF1, 4.33 miles long, near Rowes Corner. Top gust: 75 mph near Ann Arbor.
| Date | Rating | Path length | Width | Near |
|---|---|---|---|---|
| June 23, 2015 | EF1 | 4.33 mi | 100 yd | Rowes Corner |
| April 15, 2026 | EF1 | 1.71 mi | 500 yd | Ann Arbor |
| Date | Gust | Near |
|---|---|---|
| May 13, 2014 | 75 mph | Ann Arbor |
| September 5, 2014 | 74 mph | Whittaker |
| August 24, 2020 | 71 mph | Ypsilanti |
| September 5, 2014 | 70 mph | Rawsonville |
| August 24, 2023 | 70 mph | Ann Arbor |
| August 24, 2023 | 70 mph | Salem |
Homes in Washtenaw County
Median build year in Washtenaw County: 1978. 79.3% of 158,115 homes predate 2000. Houses permitted since 2014: 6,739, or 42.6 per 1,000 homes. Busiest year: 2021.
| pre-1940 | 11.8% |
|---|---|
| 1940s | 4.3% |
| 1950s | 9.1% |
| 1960s | 12.3% |
| 1970s | 15.4% |
| 1980s | 10.5% |
| 1990s | 16.0% |
| 2000s | 13.0% |
| 2010s | 6.4% |
| 2020+ | 1.2% |
| Year | Houses | All units |
|---|---|---|
| 2014 | 385 | 570 |
| 2015 | 390 | 420 |
| 2016 | 438 | 438 |
| 2017 | 583 | 657 |
| 2018 | 652 | 805 |
| 2019 | 608 | 815 |
| 2020 | 711 | 1,065 |
| 2021 | 795 | 916 |
| 2022 | 603 | 656 |
| 2023 | 485 | 1,597 |
| 2024 | 557 | 1,193 |
| 2025 | 532 | 1,088 |
Quick answers
How many hail reports has Washtenaw County had?
NOAA logged 69 hail reports in Washtenaw County, Michigan, from 2014 to June 2026.
How many days had hail of 1 inch or larger in Washtenaw County?
16 days, including 3 days with hail of 1.75 inches or larger. The National Weather Service calls hail of 1 inch or larger severe.
What was the largest hail reported in Washtenaw County?
2 inches (a hen egg), reported on May 27, 2015.
Which month has the most hail in Washtenaw County?
July has the most reports, 26% of the 69 in the record.
Does a hail day in the record mean my roof was damaged?
A counted day only means a spotter reported hail somewhere in the area. An inspection is the only way to know whether a roof was hit.
Next steps for Washtenaw County
Washtenaw County cities we cover
Cite this page
Data version: NOAA Storm Events hail data, 2014 to June 2026, loaded October 6, 2026. All dataset versions. Download the table as CSV. Free to quote with credit under CC BY 4.0.
Source: NOAA Storm Events Database, public domain. Counts and tables on this page are free to reuse with credit to PickARoofer under CC BY 4.0.