Hail history for Summit, Wisconsin
NOAA hail reports in and within about 5 km (3 miles) of Summit since 1989, with preliminary reports to November 3, 2026.
Readout · Summit
- Last hail
- May 15, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 4 reports
- Largest ever
- 1.50 in
- ping pong ball · May 15, 2025
17 reports on 13 days since 1989 · #105 of 271 Wisconsin places
Hail map · Summit
- 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 Summit
The latest hail report in and around Summit is from May 15, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.50 in on May 15, 2025.
Over the 20 years 2006–2025, Summit 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 #105 of 271 Wisconsin cities and towns on this site for all-time reports. Summit accounts for 6% of the 265 reports filed in Waukesha County.
0% 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 1.50 in (ping pong ball) on May 15, 2025 near Dousman.
The busiest year was 2025, with 2 reports on 1 day. Hail here peaks in May (35% of reports); 71% fall between April and June.
Reports a year 2006–2025 average
- Summit 0.3
- Waukesha County 8.9
- Median Wisconsin town on this site 0.5
Hail days 2006–2025
- Summit 6
- Waukesha County 67
- Median Wisconsin town on this site 7
Share 2 in or larger of sized reports
- Summit 0%
- 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 | 0 | ||||||||||||
| 2025 | 2 | 2 | |||||||||||
| 2024 | 1 | 1 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 1 | 1 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| May 15, 2025 | 2 | 1.50 in | — |
| Feb 27, 2024 | 1 | 0.88 in | — |
| Jun 13, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 15, 2025 | 1.50 inping pong ball | Dousman | Waukesha | 16:18 local · NCEI |
| May 14, 2001 | 1.50 inping pong ball | 3 SE Sullivan | Jefferson | 10:21 local · NCEI |
| May 15, 2025 | 1.00 inquarter | 0.51 W Utica | Waukesha | 16:25 local · NCEI |
| Jun 13, 2022 | 1.00 inquarter | 2.94 SSE Dousman | Waukesha | 15:00 local · NCEI |
| Jun 10, 2020 | 1.00 inquarter | Summit Corners | Waukesha | 12:45 local · NCEI |
Size of every report
- Under 1 in 12 71%
- 1–2 in 5 29%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 15, 2025 | 1.00 inquarter | 0.51 W Utica | Waukesha | 16:25 local · NCEI |
| May 15, 2025 | 1.50 inping pong ball | Dousman | Waukesha | 16:18 local · NCEI |
| Feb 27, 2024 | 0.88 innickel | 3.06 S Waterville | Waukesha | 20:09 local · NCEI |
| Jun 13, 2022 | 1.00 inquarter | 2.94 SSE Dousman | Waukesha | 15:00 local · NCEI |
| Jun 10, 2020 | 1.00 inquarter | Summit Corners | Waukesha | 12:45 local · NCEI |
| Jul 15, 2017 | 0.75 inpenny | 2.94 SSE Dousman | Waukesha | 23:00 local · NCEI |
| Jun 28, 2008 | 0.75 inpenny | 2 N Dousman | Waukesha | 13:57 local · NCEI |
| Jul 31, 2003 | 0.75 inpenny | 4 SE Sullivan | Jefferson | 16:53 local · NCEI |
| May 14, 2001 | 0.75 inpenny | 2 E Concord | Jefferson | 11:50 local · NCEI |
| May 14, 2001 | 1.50 inping pong ball | 3 SE Sullivan | Jefferson | 10:21 local · NCEI |
| May 11, 2000 | 0.75 inpenny | 3 SE Sullivan | Jefferson | 23:25 local · NCEI |
| May 11, 2000 | 0.75 inpenny | 3 SE Sullivan | Jefferson | 22:28 local · NCEI |
Hail history near Summit
- Oconomowoc 6 km · 38
- Delafield 8 km · 10
- Hartland 13 km · 10
- Eagle 18 km · 10
- Waukesha 19 km · 26
- Palmyra 21 km · 11
- Johnson Creek 24 km · 11
- Mukwonago 25 km · 18
Questions about hail in Summit
How often does it hail in Summit, Wisconsin?
17 hail reports have been logged in and within about 5 km (3 miles) of Summit since 1989. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #105 of 271 Wisconsin places by number of reports.
When is hail season in Summit?
Most reports come in May, June, July. May alone accounts for 35% of all reports.
What is the largest hail recorded in Summit?
1.50 in (ping pong ball size) on May 15, 2025 near Dousman. 0% of reports here were 2 inches or larger.
When did it last hail in Summit?
The most recent report in this data is from May 15, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Summit had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was May 15, 2025.
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.