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Hail history in Waterloo, WI

Radar has detected major hail over the Waterloo area on 21 days since 2011, up to 2.25" (hen egg size) on July 7, 2017. Source: NOAA Severe Weather Data Inventory radar signatures, which estimate hail aloft near Waterloo, not confirmed ground reports.

Data last updated: July 28, 2026

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Every major hail day near Waterloo

July 2, 2026up to 1.25" near Waterloo · storm peaked at 3.25" (Jackson area)August 10, 2025up to 1" near Waterloo · storm peaked at 1.25" (Watertown area)August 27, 2024up to 1.75" near Waterloo · storm peaked at 2.5" (Weyauwega area)June 21, 2024up to 1.75" near Waterloo · storm peaked at 1.75" (Waterloo area)April 27, 2024up to 1.5" near Waterloo · storm peaked at 2.25" (Sandy Hook area)October 23, 2023up to 1.5" near Waterloo · storm peaked at 2.25" (Madison area)August 17, 2023up to 2" near Waterloo · storm peaked at 2.5" (Beloit area)July 5, 2023up to 1.25" near Waterloo · storm peaked at 2" (Hebron area)June 21, 2022up to 1.5" near Waterloo · storm peaked at 2.75" (Lebanon area)May 13, 2022up to 1.25" near Waterloo · storm peaked at 2.25" (Marshall area)August 6, 2021up to 2" near Waterloo · storm peaked at 2.75" (St. Cloud area)July 7, 2020up to 1.5" near Waterloo · storm peaked at 1.75" (Westfield area)July 20, 2019up to 1.75" near Waterloo · storm peaked at 2.25" (Independence area)May 9, 2018up to 1" near Waterloo · storm peaked at 2" (Franklin area)July 7, 2017up to 2.25" near Waterloo · storm peaked at 3.25" (Collins area)May 3, 2015up to 1.5" near Waterloo · storm peaked at 2.75" (Houlton area)November 17, 2013up to 1.5" near Waterloo · storm peaked at 2" (Franklin area)September 19, 2013up to 1.25" near Waterloo · storm peaked at 2" (Prairie du Chien area)May 30, 2013up to 1.25" near Waterloo · storm peaked at 2.5" (Lime Ridge area)May 2, 2012up to 1.25" near Waterloo · storm peaked at 4" (Arcadia area)April 4, 2011up to 1" near Waterloo · storm peaked at 1.5" (West Bend area)

What this record means for a Waterloo roof

The list above covers 21 radar-confirmed hail days over Waterloo between 2011 and 2026. The largest signature recorded over the Waterloo area was 2.25" (hen egg size) on July 7, 2017. Radar put the local estimate at or above the 1" mark, the size generally capable of damaging asphalt shingles, on every one of those days.

Insurers and their adjusters can pull this same NOAA archive, so a date on this list is not news to the company handling a claim. What the archive cannot show is the condition of your specific roof, which is why dated photos and a written inspection report carry the weight in a dispute. Most homeowner policies also set a deadline to report storm damage, commonly one or two years from the date of loss, so a recent date above matters most if the roof was never inspected after it.

Get the roof inspected, free

Radar cannot confirm what hit your shingles; an inspection can, and it costs you nothing. Angi matches you with licensed local roofers who inspect for free and bid the work. Know how it works going in: the roofers pay Angi for the introduction, you pay nothing, and more than one company may call. That is the useful part: multiple written estimates are exactly what you want in hand before an adjuster visit or a contract.

Find licensed roofers near you on Angi

Referral disclosure: this site may earn a fee if you request quotes through this link. That does not change what you pay, and no contractor pays to be described a certain way here.

Before you sign anything, read the contractor red flags: assignment-of-benefits traps, deductible games, and storm-chaser tells.

Common questions

Has Waterloo had hail big enough to damage roofs?

Radar has detected hail up to 2.25" (hen egg size) over the Waterloo area, most recently on July 2, 2026. Hail of 1" or larger is generally considered capable of damaging asphalt shingles.

Does this prove my roof was damaged?

No. Radar estimates hail aloft, accurate to roughly a mile, and cannot confirm what reached any specific roof. It is a strong reason to document your roof and check your policy's claim deadline after a listed date, not proof of damage.

How do I check my exact address in Waterloo?

Use the free address lookup on this site. It searches the same NOAA radar archive within a radius you choose around your address, back to 2011.

If one of these dates is recent