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Hail history for Grafton, WI

Last hail within 10 milesJul 2, 20261 in (quarter)

Hail days, last 12 months1

Largest hail since 20062.75 in (baseball)Apr 7, 2020

Hail days since 200621

Days with hail 1 inch or larger14

Tornadoes within 10 miles3

Damaging wind reports within 10 miles42

Hail has been reported within 10 miles of Grafton on 21 days since 2006. The largest stones measured 2.75 in (baseball) on Apr 7, 2020. Hail is most common here in May and April.

Recent hail near Grafton

Date	Hail size	Where	Source
Jul 2, 2026	1 in quarter	Jackson 1 hail report · closest 8 mi from Grafton	NWS storm report (preliminary)

One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.

Hail days near Grafton by year

When hail season peaks near Grafton

Of the 21 hail days since 2006, most fell in May (6) and April (4).

Largest hail storms near Grafton

Apr 7, 2020 · 2.75 in (baseball) · Cedarburg (3 mi from Grafton)

Apr 13, 2006 · 1.75 in (golf ball) · Saukville (5 mi from Grafton)

May 1, 2012 · 1.75 in (golf ball) · Germantown (10 mi from Grafton)

Aug 2, 2015 · 1.75 in (golf ball) · Newburg (9 mi from Grafton)

Apr 25, 2016 · 1.75 in (golf ball) · Port Washington (6 mi from Grafton)

Tornadoes within 10 miles of Grafton

Date	Rating	Where	Path
Aug 10, 2015	EF0	Germantown 8 mi from Grafton	0.8 mi long, 50 yd wide
Aug 10, 2015	EF0	Freistadt 8 mi from Grafton	0.2 mi long, 50 yd wide
Jun 3, 2007	EF1	Kirchhayn 6 mi from Grafton	0.5 mi long, 50 yd wide

Damaging thunderstorm winds near Grafton

42 reports of damaging thunderstorm wind within 10 miles of Grafton since 2006, on 30 days. The strongest measured gust was 70 mph on May 1, 2012.

Date	Strongest gust	Where	Source
Aug 18, 2026	damage reported	Bayside 1 wind report	NWS storm report (preliminary)
Aug 27, 2024	58 mph, estimated	Five Corners 1 wind report	NOAA Storm Events
Jun 17, 2024	58 mph, estimated	Five Corners 1 wind report	NOAA Storm Events
Nov 5, 2022	58 mph, estimated	Freistadt, Five Corners 2 wind reports	NOAA Storm Events
Jul 23, 2022	60 mph, estimated	Cedarburg, Knellsville 2 wind reports	NOAA Storm Events
Jun 15, 2022	64 mph, estimated	Port Washington 1 wind report	NOAA Storm Events
Aug 10, 2021	60 mph, estimated	Thiensville 1 wind report	NOAA Storm Events
Jun 2, 2020	58 mph, estimated	Five Corners, Saukville 2 wind reports	NOAA Storm Events
Apr 20, 2020	70 mph, estimated	Kirchhayn 1 wind report	NOAA Storm Events
Jun 27, 2019	58 mph, measured	Mequon 1 wind report	NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Grafton; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Nearby cities

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of Grafton.

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