Hail history for Dallas County, IA

Dallas County has 249 recorded hail events in the NOAA Storm Events Database — 156 of them 1″ or larger and 8 at 2″ or larger. The largest on record: 3.0″ (tea cup) on July 9, 2021.

Records 1950–present Data through April 2026 Peak month May

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 249 since 1970

1″ or larger 156 NWS severe threshold

2″ or larger 8 hen egg class and up

Largest recorded 3.0″ tea cup · July 9, 2021

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 Dallas County

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

Most recent recorded events

Latest 8 of 249 recorded events · data through April 2026
Date	Size	Comparable to
March 14, 2025	0.75″	Penny
March 14, 2025	1.0″	Quarter
March 14, 2025	0.75″	Penny
July 31, 2024	1.0″	Quarter
May 21, 2024	1.0″	Quarter
May 21, 2024	0.88″	Nickel
April 30, 2024	1.0″	Quarter
September 19, 2023	0.75″	Penny

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

From the storm reports

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

March 14, 2025 · 0.75″ (penny)

Report from mping.

July 9, 2021 · 3.0″ (tea cup)

Report made via social media.

June 28, 2017 · 2.75″ (baseball)

Media relayed public report of baseball sized hail. This is a delayed report via social media.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	0	8	4	29	108	82	18

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 Dallas County

Has it ever hailed in Dallas County?

Yes — 249 hail events have been recorded for Dallas County, IA in the NOAA Storm Events Database since 1970, including 156 of 1″ (quarter size) or larger.

When did it last hail in Dallas County?

The most recent recorded hail event for Dallas County, IA is March 14, 2025, with 0.75″ (penny) 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 Dallas County?

3.0″ (tea cup), recorded on July 9, 2021. 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.