Hail history for Boone County, IA

Boone County has 194 recorded hail events in the NOAA Storm Events Database — 145 of them 1″ or larger and 23 at 2″ or larger. The largest on record: 3.0″ (tea cup) on June 25, 2008.

Records 1950–present Data through April 2026 Peak month July

Core sample · every recorded event, 1955–2026

Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.

Recorded events 194 since 1960

1″ or larger 145 NWS severe threshold

2″ or larger 23 hen egg class and up

Largest recorded 3.0″ tea cup · June 25, 2008

Read the record honestly: Storm Events contains what was reported to the National Weather Service. Sparse or rural counties under-report, and coverage improved sharply after the mid-1990s — a quiet-looking stretch is not proof nothing fell.

When it hails in Boone County

Recorded events by month, 1950–present. The amber bar marks Boone County's peak: July.

Most recent recorded events

Latest 8 of 194 recorded events · data through April 2026
Date	Size	Comparable to
March 14, 2025	1.0″	Quarter
July 30, 2024	1.0″	Quarter
May 8, 2024	1.0″	Quarter
May 8, 2024	1.0″	Quarter
May 8, 2024	1.0″	Quarter
April 30, 2024	0.75″	Penny
April 30, 2024	0.75″	Penny
May 7, 2023	0.75″	Penny

Looking for a specific storm? Use the did-it-hail date lookup for Boone County.

From the storm reports

Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).

March 14, 2025 · 1.0″ (quarter)

Reported from mping.

July 9, 2021 · 2.75″ (baseball)

Time estimated via radar.

June 25, 2008 · 3.0″ (tea cup)

Hail was oblong with the major axis up to 3.25 inches in length.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	9	2	7	24	68	57	27

The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.

Questions about hail in Boone County

Has it ever hailed in Boone County?

Yes — 194 hail events have been recorded for Boone County, IA in the NOAA Storm Events Database since 1960, including 145 of 1″ (quarter size) or larger.

When did it last hail in Boone County?

The most recent recorded hail event for Boone County, IA is March 14, 2025, with 1.0″ (quarter) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.

What is the largest hail ever recorded in Boone County?

3.0″ (tea cup), recorded on June 25, 2008. Hail that size is destructive-class and typically damages roofs, vehicles, and siding. See how big that really is on the actual-size hail chart.

Does a recorded hail event mean my roof was damaged?

No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.

More Iowa hail history

All 99 Iowa counties, ranked by recorded hail →

Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.