Hail History

Hail history for Muskego, Wisconsin

NOAA hail reports in and within about 5 km (3 miles) of Muskego since 1963, with preliminary reports to November 3, 2026.

Readout · Muskego

Last hail
May 15, 2025
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 2 reports
Largest ever
2.50 in
tennis ball · Aug 2, 2015

11 reports on 10 days since 1963 · #214 of 271 Wisconsin places

Hail map · Muskego

Muskego Franklin New Berlin Vernon Mukwonago West Allis Waukesha Oak Creek 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
11 most recent reports with a location; Waukesha County is shaded. Open street map

For homeowners

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What the record says about Muskego

The latest hail report in and around Muskego is from May 15, 2025, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on May 15, 2025.

Over the 20 years 2006–2025, Muskego logged 4 reports on 3 hail days, about 0.2 reports a year. That is about half the median Wisconsin town on this site (0.5 a year) and ranks #214 of 271 Wisconsin cities and towns on this site for all-time reports. Muskego accounts for 4% of the 265 reports filed in Waukesha County.

9% 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 2.50 in (tennis ball) on August 2, 2015 near 0.86 SE Muskego.

The busiest year was 2025, with 2 reports on 1 day. Hail here peaks in August (36% of reports); 36% fall between April and June.

Reports a year 2006–2025 average

  • Muskego 0.2
  • Waukesha County 8.9
  • Median Wisconsin town on this site 0.5

Hail days 2006–2025

  • Muskego 3
  • Waukesha County 67
  • Median Wisconsin town on this site 7

Share 2 in or larger of sized reports

  • Muskego 9%
  • Waukesha County 6%
  • Median Wisconsin town on this site 6%

Hail over time

012 1963: 1 reports, largest 0.75 in 1969: 1 reports, largest 1.00 in 1970 1980 1984: 1 reports, largest 1.75 in 1988: 1 reports, largest 1.00 in 1990 1991: 1 reports, largest 0.88 in 1999: 1 reports, largest 1.00 in 2000: 1 reports, largest 0.75 in 2000 2010: 1 reports, largest 0.75 in 2010 2015: 1 reports, largest 2.50 in 2020 2025: 2 reports, largest 1.00 in
Reports per year, 1963–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
01234 Jan Feb March: 1 reports (9%) Mar April: 1 reports (9%) Apr May: 2 reports (18%) May June: 1 reports (9%) Jun July: 2 reports (18%) Jul August: 4 reports (36%) Aug Sep Oct Nov Dec
All 11 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 2 2
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 15, 2025 2 1.00 in —

Largest hail on record

Largest hail reports in Muskego
Date Size Location County Time · source
Aug 2, 2015 2.50 intennis ball 0.86 SE Muskego Waukesha 19:18 local · NCEI
Jun 26, 1984 1.75 ingolf ball — Waukesha 22:00 local · NCEI
May 15, 2025 1.00 inquarter 1.23 NW Muskego Lake Waukesha 17:38 local · NCEI
May 15, 2025 1.00 inquarter 0.86 NE Muskego Waukesha 17:36 local · NCEI
Aug 10, 1999 1.00 inquarter 1 SE Muskego Waukesha 01:00 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

Most recent reports

Most recent hail reports in Muskego
Date Size Location County Time · source
May 15, 2025 1.00 inquarter 1.23 NW Muskego Lake Waukesha 17:38 local · NCEI
May 15, 2025 1.00 inquarter 0.86 NE Muskego Waukesha 17:36 local · NCEI
Aug 2, 2015 2.50 intennis ball 0.86 SE Muskego Waukesha 19:18 local · NCEI
Jul 10, 2010 0.75 inpenny Muskego Waukesha 18:01 local · NCEI
Mar 8, 2000 0.75 inpenny Muskego Waukesha 17:43 local · NCEI
Aug 10, 1999 1.00 inquarter 1 SE Muskego Waukesha 01:00 local · NCEI
Apr 8, 1991 0.88 innickel — Milwaukee 18:10 local · NCEI
Aug 8, 1988 1.00 inquarter — Waukesha 15:30 local · NCEI
Jun 26, 1984 1.75 ingolf ball — Waukesha 22:00 local · NCEI
Aug 11, 1969 1.00 inquarter — Milwaukee 15:30 local · NCEI
Jul 31, 1963 0.75 inpenny — Milwaukee 15:30 local · NCEI

Hail history near Muskego

Questions about hail in Muskego

How often does it hail in Muskego, Wisconsin?

11 hail reports have been logged in and within about 5 km (3 miles) of Muskego since 1963. Over the 20 years 2006–2025 that averages 0.2 reports a year. That ranks #214 of 271 Wisconsin places by number of reports.

When is hail season in Muskego?

Most reports come in August, May, July. August alone accounts for 36% of all reports.

What is the largest hail recorded in Muskego?

2.50 in (tennis ball size) on August 2, 2015 near 0.86 SE Muskego. 9% of reports here were 2 inches or larger.

When did it last hail in Muskego?

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 Muskego had in the last five years?

1 separate days with hail reports since November 3, 2021, adding up to 2 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.