Hail history for Grant County, Wisconsin
Every NOAA hail report filed in Grant County since 1966, with preliminary National Weather Service reports to November 3, 2026.
Readout · Grant County
- Last hail
- Jul 2, 2026
- 2.00 in, hen egg size
- Hail days, last 5 years
- 12
- since Nov 3, 2021 · 27 reports
- Largest ever
- 3.00 in
- teacup · Jul 2, 1969
255 reports on 112 days since 1966 · #3 of 73 Wisconsin counties
Hail map · Grant 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 Grant County
The latest hail report in Grant County is from July 2, 2026, 2.00 in (hen egg size). Since November 3, 2021 there have been 12 separate hail days; the biggest stones in that time were 2.75 in on April 18, 2025.
Over the 20 years 2006–2025, Grant County logged 144 reports on 54 hail days, about 7.2 reports a year. That is about twice the median Wisconsin county (3.5 a year) and ranks #3 of 73 Wisconsin counties for all-time reports. Grant County holds 3% of all 9,358 hail reports in Wisconsin.
7% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median Wisconsin county. The largest hail on record here is 3.00 in (teacup) on July 2, 1969.
Reports were down 62% in 2016–2025 (40) compared with 2006–2015 (104). The busiest year was 2009, with 27 reports on 3 days. Hail here peaks in May (27% of reports); 67% fall between April and June.
Reports a year 2006–2025 average
- Grant County 7.2
- Median Wisconsin county 3.5
Hail days 2006–2025
- Grant County 54
- Median Wisconsin county 37
Share 2 in or larger of sized reports
- Grant County 7%
- Median Wisconsin county 7%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 5 | 1 | 2 | 9 | ||||||||
| 2025 | 7 | 1 | 2 | 10 | |||||||||
| 2024 | 5 | 5 | |||||||||||
| 2023 | 2 | 2 | |||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 1 | 1 | |||||||||||
| 2020 | 2 | 2 | |||||||||||
| 2019 | 1 | 1 | 2 | 4 | |||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 7 | 2 | 1 | 2 | 1 | 13 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jul 2, 2026 | 2 | 2.00 in | — |
| Jun 24, 2026 | 1 | 1.00 in | — |
| Apr 17, 2026 | 1 | 0.88 in | — |
| Apr 14, 2026 | 4 | 2.00 in | — |
| Mar 10, 2026 | 1 | 1.00 in | — |
| Sep 22, 2025 | 2 | 2.00 in | — |
| Aug 16, 2025 | 1 | 1.00 in | — |
| Apr 18, 2025 | 7 | 2.75 in | — |
| May 21, 2024 | 3 | 1.75 in | — |
| May 7, 2024 | 2 | 0.88 in | — |
| Jul 28, 2023 | 2 | 2.00 in | — |
| Jul 5, 2022 | 1 | 0.75 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jul 2, 1969 | 3.00 inteacup | — | — | 18:00 local · NCEI |
| Apr 18, 2025 | 2.75 inbaseball | 3.05 W Platteville | — | 04:57 local · NCEI |
| Apr 13, 2006 | 2.75 inbaseball | 4 S Livingston | $3K | 19:40 local · NCEI |
| Jun 12, 1976 | 2.75 inbaseball | — | — | 21:30 local · NCEI |
| Apr 18, 2025 | 2.50 intennis ball | 1.02 W Platteville | — | 04:50 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 99 39%
- 1–2 in 139 55%
- 2 in + 17 7%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Jul 2, 2026 | 2.00 inhen egg | 3.6 SSE Glenhaven | $15K | 14:08 local · NCEI |
| Jul 2, 2026 | 1.00 inquarter | 2.9 SE Glenhaven | — | 14:04 local · NCEI |
| Jun 24, 2026 | 1.00 inquarter | 0.86 NE Five Pts | — | 15:39 local · NCEI |
| Apr 17, 2026 | 0.88 innickel | 2.05 SE Lancaster | — | 15:22 local · NCEI |
| Apr 14, 2026 | 0.75 inpenny | Montfort | — | 16:36 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.69 N Patch Grove | — | 16:34 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 2.88 WSW Werley | — | 16:05 local · NCEI |
| Apr 14, 2026 | 2.00 inhen egg | 0.51 E Mt Hope | $175K | 16:01 local · NCEI |
| Mar 10, 2026 | 1.00 inquarter | 1.52 E Cornelia | — | 20:03 local · NCEI |
| Sep 22, 2025 | 1.00 inquarter | 0.69 N Montfort | — | 17:29 local · NCEI |
| Sep 22, 2025 | 2.00 inhen egg | 2.07 S Montfort | $62K | 17:08 local · NCEI |
| Aug 16, 2025 | 1.00 inquarter | Lancaster Arpt | — | 20:50 local · NCEI |
Cities and towns in Grant County
| Place | Reports | Largest |
|---|---|---|
| Platteville | 29 | 3.00 in |
| Lancaster | 21 | 2.75 in |
| Fennimore | 17 | 1.00 in |
| Blue River | 16 | 1.75 in |
| Hazel Green | 15 | 1.25 in |
| Cassville | 12 | 2.00 in |
| Montfort | 11 | 2.00 in |
| Boscobel | 10 | 1.75 in |
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 |
|---|---|---|---|
| Cuba City | 9 | 9 | Apr 30, 2022 |
| Dickeyville | 9 | 8 | May 21, 2024 |
| Bagley | 8 | 7 | Mar 23, 2017 |
| Glen Haven | 8 | 7 | Jul 2, 2026 |
| Muscoda | 6 | 5 | May 6, 2012 |
| Kieler | 5 | 4 | May 16, 1999 |
| Patch Grove | 5 | 5 | Apr 14, 2026 |
| Potosi | 5 | 5 | Jul 24, 2009 |
| Tennyson | 5 | 5 | Apr 17, 2019 |
| Bloomington | 4 | 4 | Jun 29, 2015 |
| Mount Hope | 4 | 2 | Apr 14, 2026 |
| Woodman | 4 | 4 | Jul 18, 2019 |
| Livingston | 3 | 3 | Jul 24, 2009 |
| Sandy Hook | 2 | 2 | Apr 3, 2011 |
Questions about hail in Grant County
How often does it hail in Grant County, Wisconsin?
255 hail reports have been logged in Grant County since 1966. Over the 20 years 2006–2025 that averages 7.2 reports a year. That ranks #3 of 73 Wisconsin counties by number of reports.
When is hail season in Grant County?
Most reports come in May, April, June. May alone accounts for 27% of all reports.
What is the largest hail recorded in Grant County?
3.00 in (teacup size) on July 2, 1969. 7% of reports here were 2 inches or larger.
When did it last hail in Grant County?
The most recent report in this data is from July 2, 2026 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Grant County had in the last five years?
12 separate days with hail reports since November 3, 2021, adding up to 27 reports. The most recent was July 2, 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.