Hail History

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Hail history for Grinnell, IA

Last hail within 10 milesOct 24, 20240.88 in (nickel)
Hail days, last 12 monthsNone
Largest hail since 20062.75 in (baseball)May 7, 2023
Hail days since 200625
Days with hail 1 inch or larger16
Tornadoes within 10 miles4
Damaging wind reports within 10 miles41

Hail has been reported within 10 miles of Grinnell on 25 days since 2006. The largest stones measured 2.75 in (baseball) on May 7, 2023. Hail is most common here in June and April.

Recent hail near Grinnell

DateHail sizeWhereSource
Oct 24, 20240.88 in
nickel		Grinnell
1 hail report · closest near the center of Grinnell		NOAA Storm Events

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

Hail days near Grinnell by year

206074081091101112121132141516117218119201211223232242526

When hail season peaks near Grinnell

Of the 25 hail days since 2006, most fell in June (6) and April (4).

JanFeb2Mar4Apr2May6Jun3Jul3Aug3Sep1Oct1NovDec

Largest hail storms near Grinnell

May 7, 2023 · 2.75 in (baseball) · Grinnell Airport (3 mi from Grinnell)

National Weather Service description (English): Baseball sized hail with strong winds. Report via social media.

Apr 6, 2010 · 1.5 in (ping pong ball) · Grinnell (0 mi from Grinnell)

Jun 29, 2012 · 1.25 in (half dollar) · Grinnell Airport (3 mi from Grinnell)

Jun 20, 2021 · 1.25 in (half dollar) · Grinnell Airport (4 mi from Grinnell)

Jun 10, 2008 · 1 in (quarter) · Malcolm (9 mi from Grinnell)

Tornadoes within 10 miles of Grinnell

DateRatingWherePath
Mar 5, 2022EF1Chester Center
7 mi from Grinnell		3.3 mi long, 150 yd wide
Mar 5, 2022EF0Montour
8 mi from Grinnell		1.7 mi long, 100 yd wide
Oct 9, 2018EF0Malcolm
8 mi from Grinnell		1.8 mi long, 40 yd wide
Sep 30, 2007EF1Malcolm
7 mi from Grinnell		5.0 mi long, 150 yd wide

Damaging thunderstorm winds near Grinnell

41 reports of damaging thunderstorm wind within 10 miles of Grinnell since 2006, on 22 days. The strongest measured gust was 72 mph on Jun 29, 2012.

DateStrongest gustWhereSource
Jun 20, 202560 mph, estimatedGrinnell
1 wind report		NOAA Storm Events
Mar 14, 202564 mph, estimatedMalcolm
1 wind report		NOAA Storm Events
May 21, 202460 mph, estimatedNewburg
1 wind report		NOAA Storm Events
May 7, 202363 mph, estimatedGrinnell Airport
2 wind reports		NOAA Storm Events
Dec 15, 202164 mph, estimatedGrinnell Airport
1 wind report		NOAA Storm Events
Aug 10, 202085 mph, estimatedGrinnell Airport, Malcolm
2 wind reports		NOAA Storm Events
Aug 20, 201970 mph, estimatedGrinnell Airport
1 wind report		NOAA Storm Events
Jun 6, 201870 mph, estimatedLynnville, Grinnell, Gilman
4 wind reports		NOAA Storm Events
Jun 16, 201771 mph, estimatedGrinnell Airport
1 wind report		NOAA Storm Events
May 17, 201768 mph, measuredGrinnell Airport
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 Grinnell; 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 Grinnell.

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