Hail History

Hail history for Lake Mills, Wisconsin

NOAA hail reports in and within about 5 km (3 miles) of Lake Mills since 1972, with preliminary reports to November 3, 2026.

Readout · Lake Mills

Last hail
Apr 14, 2026
1.50 in, ping pong ball size
Hail days, last 5 years
2
since Nov 3, 2021 · 4 reports
Largest ever
4.25 in
grapefruit · Apr 13, 2006

28 reports on 20 days since 1972 · #39 of 271 Wisconsin places

Hail map · Lake Mills

Lake Mills Jefferson Johnson Creek Waterloo Deerfield Marshall Fort Atkinson Watertown 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
28 most recent reports with a location; Jefferson County is shaded. Open street map

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What the record says about Lake Mills

The latest hail report in and around Lake Mills is from April 14, 2026, 1.50 in (ping pong ball size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.75 in on April 18, 2025.

Over the 20 years 2006–2025, Lake Mills logged 19 reports on 13 hail days, about 0.9 reports a year. That is about twice the median Wisconsin town on this site (0.5 a year) and ranks #39 of 271 Wisconsin cities and towns on this site for all-time reports. Lake Mills accounts for 16% of the 177 reports filed in Jefferson County.

14% 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 April 13, 2006 near 3 NW Lake Mills.

Reports were down 64% in 2016–2025 (5) compared with 2006–2015 (14). The busiest year was 2011, with 3 reports on 3 days. Hail here peaks in May (32% of reports); 82% fall between April and June.

Reports a year 2006–2025 average

  • Lake Mills 0.9
  • Jefferson County 5.0
  • Median Wisconsin town on this site 0.5

Hail days 2006–2025

  • Lake Mills 13
  • Jefferson County 46
  • Median Wisconsin town on this site 7

Share 2 in or larger of sized reports

  • Lake Mills 14%
  • Jefferson County 10%
  • Median Wisconsin town on this site 6%

Hail over time

0123 1972: 1 reports, largest 2.50 in 1980 1987: 1 reports, largest 2.00 in 1990 1999: 1 reports, largest 1.00 in 2000: 3 reports, largest 1.00 in 2000 2005: 1 reports, largest 0.75 in 2006: 3 reports, largest 4.25 in 2008: 1 reports, largest 1.00 in 2010: 3 reports, largest 1.75 in 2010 2011: 3 reports, largest 1.00 in 2012: 2 reports, largest 1.25 in 2013: 1 reports, largest 1.00 in 2014: 1 reports, largest 0.88 in 2017: 2 reports, largest 0.88 in 2020 2021: 1 reports, largest 1.50 in 2025: 2 reports, largest 1.75 in 2026: 2 reports, largest 1.50 in
Reports per year, 1972–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0369 Jan Feb Mar April: 7 reports (25%) Apr May: 9 reports (32%) May June: 7 reports (25%) Jun Jul August: 4 reports (14%) Aug September: 1 reports (4%) Sep Oct Nov Dec
All 28 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 2 2
2025 2 2
2024 0
2023 0
2022 0
2021 1 1
2020 0
2019 0
2018 0
2017 2 2

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Apr 14, 2026 2 1.50 in —
Apr 18, 2025 2 1.75 in —

Largest hail on record

Largest hail reports in Lake Mills
Date Size Location County Damage Time · source
Apr 13, 2006 4.25 ingrapefruit 3 NW Lake Mills Jefferson $4.4 million 20:55 local · NCEI
Apr 13, 2006 2.50 intennis ball 3 W Lake Mills Jefferson — 20:55 local · NCEI
Sep 17, 1972 2.50 intennis ball — Jefferson — 23:15 local · NCEI
May 21, 1987 2.00 inhen egg — Jefferson — 17:20 local · NCEI
Apr 18, 2025 1.75 ingolf ball 1.01 W Milford Jefferson — 06:09 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 Lake Mills
Date Size Location County Damage Time · source
Apr 14, 2026 1.50 inping pong ball 5.24 NNE London Dane — 17:01 local · NCEI
Apr 14, 2026 1.00 inquarter 4.1 NW Lake Mills Jefferson — 17:00 local · NCEI
Apr 18, 2025 1.75 ingolf ball 1.01 W Milford Jefferson — 06:09 local · NCEI
Apr 18, 2025 1.00 inquarter 0.86 SW Lake Mills Jefferson — 06:06 local · NCEI
Aug 6, 2021 1.50 inping pong ball 0.5 W Lake Mills Jefferson $8K 17:15 local · NCEI
Aug 3, 2017 0.88 innickel 0.5 W Lake Mills Jefferson — 12:31 local · NCEI
Aug 3, 2017 0.75 inpenny 2.62 WSW Lake Mills Jefferson — 12:15 local · NCEI
Jun 18, 2014 0.88 innickel 1.66 WSW Lake Mills Jefferson — 07:24 local · NCEI
Jun 15, 2013 1.00 inquarter 2 W Lake Mills Jefferson — 20:38 local · NCEI
May 3, 2012 1.25 inhalf dollar 1 SE Lake Mills Jefferson — 13:23 local · NCEI
May 3, 2012 1.00 inquarter Lake Mills Jefferson — 12:41 local · NCEI
May 22, 2011 1.00 inquarter 3 SW Lake Mills Jefferson — 16:30 local · NCEI

Hail history near Lake Mills

Questions about hail in Lake Mills

How often does it hail in Lake Mills, Wisconsin?

28 hail reports have been logged in and within about 5 km (3 miles) of Lake Mills since 1972. Over the 20 years 2006–2025 that averages 0.9 reports a year. That ranks #39 of 271 Wisconsin places by number of reports.

When is hail season in Lake Mills?

Most reports come in May, April, June. May alone accounts for 32% of all reports.

What is the largest hail recorded in Lake Mills?

4.25 in (grapefruit size) on April 13, 2006 near 3 NW Lake Mills. 14% of reports here were 2 inches or larger.

When did it last hail in Lake Mills?

The most recent report in this data is from April 14, 2026 (1.50 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Lake Mills had in the last five years?

2 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was April 14, 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.