Hail history for Marengo, IA

Last hail within 10 milesMay 21, 20241 in (quarter)

Hail days, last 12 monthsNone

Largest hail since 20062.75 in (baseball)May 7, 2023

Hail days since 200627

Days with hail 1 inch or larger18

Tornadoes within 10 miles4

Damaging wind reports within 10 miles60

Hail has been reported within 10 miles of Marengo on 27 days since 2006. The largest stones measured 2.75 in (baseball) on May 7, 2023. Hail is most common here in May and June.

Recent hail near Marengo

No hail was reported within 10 miles of Marengo in the last two years.

Hail days near Marengo by year

When hail season peaks near Marengo

Of the 27 hail days since 2006, most fell in May (8) and June (8).

Largest hail storms near Marengo

May 7, 2023 · 2.75 in (baseball) · Koszta (6 mi from Marengo)

Apr 13, 2006 · 1.75 in (golf ball) · Amana (10 mi from Marengo)

Jun 14, 2008 · 1.75 in (golf ball) · Middle Amana (9 mi from Marengo)

National Weather Service description (English): Law enforcement reported hail about the size of golf balls at Middle Amana.

Apr 3, 2011 · 1.75 in (golf ball) · Genoa Bluff (9 mi from Marengo)

National Weather Service description (English): Golf ball sized hail fell about 5 miles south of Ladora, IA near mile marker 210.5 on Interstate 80 at 629 pm CDT April 3.

May 3, 2012 · 1.75 in (golf ball) · Ladora Air Strip (8 mi from Marengo)

National Weather Service description (English): A trained spotter reported golf ball sized hail.

Tornadoes within 10 miles of Marengo

Date	Rating	Where	Path
Jan 16, 2023	EF1	Williamsburg 10 mi from Marengo	4.7 mi long, 400 yd wide
Oct 9, 2018	EF0	Blairstown 7 mi from Marengo	0.0 mi long, 10 yd wide
Jul 11, 2017	EF1	Williamsburg 8 mi from Marengo	4.6 mi long, 60 yd wide
May 22, 2011	EF2	Koszta 7 mi from Marengo	3.9 mi long, 75 yd wide

Damaging thunderstorm winds near Marengo

60 reports of damaging thunderstorm wind within 10 miles of Marengo since 2006, on 31 days. The strongest measured gust was 81 mph on Mar 6, 2017.

Date	Strongest gust	Where	Source
Aug 12, 2026	67 mph, measured	Upper South Amana, Marengo 3 wind reports	NWS storm report (preliminary)
Jul 20, 2026	damage reported	Marengo 1 wind report	NWS storm report (preliminary)
Jun 17, 2026	64 mph, measured	Blairstown, Koszta 2 wind reports	NOAA Storm Events
Mar 14, 2025	64 mph, measured	Marengo 1 wind report	NOAA Storm Events
Jul 15, 2024	70 mph, estimated	Ladora 1 wind report	NOAA Storm Events
May 24, 2024	75 mph, estimated	Norway 1 wind report	NOAA Storm Events
Jun 4, 2023	64 mph, estimated	Watkins 1 wind report	NOAA Storm Events
May 7, 2023	70 mph, estimated	Koszta, Marengo, Middle Amana 4 wind reports	NOAA Storm Events
Dec 15, 2021	60 mph, estimated	Blairstown 1 wind report	NOAA Storm Events
May 16, 2019	78 mph, measured	Williamsburg 2 wind reports	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 Marengo; 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 Marengo.

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