Hail history for Jefferson, Wisconsin
NOAA hail reports in and within about 5 km (3 miles) of Jefferson since 1985, with preliminary reports to November 3, 2026.
Readout · Jefferson
- Last hail
- Jun 13, 2022
- 1.75 in, golf ball size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 4.25 in
- grapefruit · May 11, 2011
13 reports on 11 days since 1985 · #166 of 271 Wisconsin places
Hail map · Jefferson
- 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 Jefferson is from June 13, 2022. A local roofer can check and document it at no cost.
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What the record says about Jefferson
The latest hail report in and around Jefferson is from June 13, 2022, 1.75 in (golf ball size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.75 in on June 13, 2022.
Over the 20 years 2006–2025, Jefferson logged 7 reports on 6 hail days, about 0.3 reports a year. That is 22% less than the median Wisconsin town on this site (0.5 a year) and ranks #166 of 271 Wisconsin cities and towns on this site for all-time reports. Jefferson accounts for 7% of the 177 reports filed in Jefferson County.
31% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Wisconsin town on this site. The largest hail on record here is 4.25 in (grapefruit) on May 11, 2011 near 4 W Jefferson.
The busiest year was 2011, with 2 reports on 1 day. Hail here peaks in May (38% of reports); 62% fall between April and June.
Reports a year 2006–2025 average
- Jefferson 0.3
- Jefferson County 5.0
- Median Wisconsin town on this site 0.5
Hail days 2006–2025
- Jefferson 6
- Jefferson County 46
- Median Wisconsin town on this site 7
Share 2 in or larger of sized reports
- Jefferson 31%
- Jefferson County 10%
- Median Wisconsin town on this site 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 13, 2022 | 1 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 11, 2011 | 4.25 ingrapefruit | 4 W Jefferson | Jefferson | — | 13:34 local · NCEI |
| Jul 2, 2000 | 2.25 inhen egg | Rome | Jefferson | $75K | 16:55 local · NCEI |
| May 11, 2011 | 2.00 inhen egg | 1 N Jefferson | Jefferson | — | 13:40 local · NCEI |
| Aug 24, 1998 | 2.00 inhen egg | Jefferson | Jefferson | — | 21:07 local · NCEI |
| Jun 13, 2022 | 1.75 ingolf ball | 0.86 SW Jefferson | Jefferson | — | 14:34 local · NCEI |
Size of every report
- Under 1 in 5 38%
- 1–2 in 4 31%
- 2 in + 4 31%
Most recent reports
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jun 13, 2022 | 1.75 ingolf ball | 0.86 SW Jefferson | Jefferson | — | 14:34 local · NCEI |
| Apr 10, 2017 | 0.75 inpenny | 0.86 NW Jefferson | Jefferson | — | 14:23 local · NCEI |
| May 3, 2012 | 1.25 inhalf dollar | 3.7 SE Lake Mills | Jefferson | — | 12:40 local · NCEI |
| May 11, 2011 | 2.00 inhen egg | 1 N Jefferson | Jefferson | — | 13:40 local · NCEI |
| May 11, 2011 | 4.25 ingrapefruit | 4 W Jefferson | Jefferson | — | 13:34 local · NCEI |
| Mar 21, 2007 | 0.75 inpenny | 1 S Jefferson | Jefferson | — | 17:10 local · NCEI |
| Apr 13, 2006 | 1.50 inping pong ball | Jefferson | Jefferson | — | 21:24 local · NCEI |
| May 23, 2004 | 0.75 inpenny | Jefferson | Jefferson | — | 18:20 local · NCEI |
| May 23, 2004 | 0.75 inpenny | 3 S Johnson Creek | Jefferson | — | 18:20 local · NCEI |
| Sep 11, 2000 | 0.88 innickel | 1 W Jefferson | Jefferson | — | 18:10 local · NCEI |
| Jul 2, 2000 | 2.25 inhen egg | Rome | Jefferson | $75K | 16:55 local · NCEI |
| Aug 24, 1998 | 2.00 inhen egg | Jefferson | Jefferson | — | 21:07 local · NCEI |
Hail history near Jefferson
- Fort Atkinson 9 km · 20
- Johnson Creek 9 km · 11
- Lake Mills 11 km · 28
- Whitewater 19 km · 17
- Lake Koshkonong 19 km · 15
- Watertown 22 km · 42
- Deerfield 22 km · 13
- Palmyra 22 km · 11
Questions about hail in Jefferson
How often does it hail in Jefferson, Wisconsin?
13 hail reports have been logged in and within about 5 km (3 miles) of Jefferson since 1985. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #166 of 271 Wisconsin places by number of reports.
When is hail season in Jefferson?
Most reports come in May, April, July. May alone accounts for 38% of all reports.
What is the largest hail recorded in Jefferson?
4.25 in (grapefruit size) on May 11, 2011 near 4 W Jefferson. 31% of reports here were 2 inches or larger.
When did it last hail in Jefferson?
The most recent report in this data is from June 13, 2022 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Jefferson had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was June 13, 2022.
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.