Hail history for Mukwonago, Wisconsin
NOAA hail reports in and within about 5 km (3 miles) of Mukwonago since 1975, with preliminary reports to November 3, 2026.
Readout · Mukwonago
- Last hail
- Aug 9, 2026
- 1.00 in, quarter size · preliminary
- Hail days, last 5 years
- 5
- since Nov 3, 2021 · 8 reports
- Largest ever
- 2.00 in
- hen egg · Oct 29, 1996
18 reports on 14 days since 1975 · #93 of 271 Wisconsin places
Hail map · Mukwonago
- 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 Mukwonago is from August 9, 2026. A local roofer can check and document it at no cost.
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What the record says about Mukwonago
The latest hail report in and around Mukwonago is from August 9, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 5 separate hail days; the biggest stones in that time were 1.50 in on April 18, 2025.
Over the 20 years 2006–2025, Mukwonago logged 13 reports on 9 hail days, about 0.7 reports a year. That is 44% more than the median Wisconsin town on this site (0.5 a year) and ranks #93 of 271 Wisconsin cities and towns on this site for all-time reports. Mukwonago accounts for 7% of the 265 reports filed in Waukesha County.
6% 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 2.00 in (hen egg) on October 29, 1996 near Mukwonago.
Reports were up 125% in 2016–2025 (9) compared with 2006–2015 (4). The busiest year was 2025, with 4 reports on 2 days. Hail here peaks in May (39% of reports); 56% fall between April and June.
Reports a year 2006–2025 average
- Mukwonago 0.7
- Waukesha County 8.9
- Median Wisconsin town on this site 0.5
Hail days 2006–2025
- Mukwonago 9
- Waukesha County 67
- Median Wisconsin town on this site 7
Share 2 in or larger of sized reports
- Mukwonago 6%
- Waukesha County 6%
- 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 | 1 | 1 | |||||||||||
| 2025 | 2 | 2 | 4 | ||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 9, 2026 | 1 | 1.00 in | View |
| May 15, 2025 | 2 | 1.25 in | — |
| Apr 18, 2025 | 2 | 1.50 in | — |
| May 7, 2024 | 2 | 1.00 in | — |
| Jul 28, 2023 | 1 | 1.25 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Oct 29, 1996 | 2.00 inhen egg | Mukwonago | Waukesha | $1.2 million | 16:52 local · NCEI |
| Jul 3, 1975 | 1.75 ingolf ball | — | Waukesha | — | 17:40 local · NCEI |
| Apr 18, 2025 | 1.50 inping pong ball | 1.52 E Jericho | Waukesha | — | 06:44 local · NCEI |
| Jun 8, 2009 | 1.50 inping pong ball | Mukwonago | Waukesha | — | 14:47 local · NCEI |
| May 15, 2025 | 1.25 inhalf dollar | Mukwonago | Waukesha | — | 17:05 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 28%
- 1–2 in 12 67%
- 2 in + 1 6%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 9, 2026 | 1.00 inquarter | 1 SW Mukwonago | Waukesha | 04:35 UTC · NWS prelim. |
| May 15, 2025 | 1.00 inquarter | Phantom Lake | Waukesha | 17:08 local · NCEI |
| May 15, 2025 | 1.25 inhalf dollar | Mukwonago | Waukesha | 17:05 local · NCEI |
| Apr 18, 2025 | 1.25 inhalf dollar | Mukwonago | Waukesha | 06:44 local · NCEI |
| Apr 18, 2025 | 1.50 inping pong ball | 1.52 E Jericho | Waukesha | 06:44 local · NCEI |
| May 7, 2024 | 1.00 inquarter | 1.01 W Phantom Lake | Waukesha | 19:45 local · NCEI |
| May 7, 2024 | 1.00 inquarter | 0.51 W Mukwonago | Waukesha | 19:38 local · NCEI |
| Jul 28, 2023 | 1.25 inhalf dollar | Mukwonago | Waukesha | 19:12 local · NCEI |
| Mar 23, 2017 | 0.75 inpenny | Mukwonago | Waukesha | 19:27 local · NCEI |
| Mar 23, 2017 | 0.88 innickel | 0.51 W Phantom Lake | Waukesha | 19:20 local · NCEI |
| Aug 1, 2014 | 0.75 inpenny | 0.51 W Phantom Lake | Waukesha | 17:30 local · NCEI |
| May 28, 2013 | 1.25 inhalf dollar | 1.13 SW Mukwonago | Waukesha | 20:05 local · NCEI |
Hail history near Mukwonago
- Vernon 5 km · 12
- East Troy 10 km · 14
- Eagle 12 km · 10
- Waterford 13 km · 12
- Muskego 15 km · 11
- Waukesha 18 km · 26
- New Berlin 20 km · 16
- Burlington 20 km · 14
Questions about hail in Mukwonago
How often does it hail in Mukwonago, Wisconsin?
18 hail reports have been logged in and within about 5 km (3 miles) of Mukwonago since 1975. Over the 20 years 2006–2025 that averages 0.7 reports a year. That ranks #93 of 271 Wisconsin places by number of reports.
When is hail season in Mukwonago?
Most reports come in May, March, April. May alone accounts for 39% of all reports.
What is the largest hail recorded in Mukwonago?
2.00 in (hen egg size) on October 29, 1996 near Mukwonago. 6% of reports here were 2 inches or larger.
When did it last hail in Mukwonago?
The most recent report in this data is from August 9, 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 Mukwonago had in the last five years?
5 separate days with hail reports since November 3, 2021, adding up to 8 reports. The most recent was August 9, 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.