Hail history for Winona County, MN

Winona County has 224 recorded hail events in the NOAA Storm Events Database — 124 of them 1″ or larger and 19 at 2″ or larger. The largest on record: 3.0″ (tea cup) on July 13, 2023.

Records 1950–present Data through April 2026 Peak month June

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 224 since 1959

1″ or larger 124 NWS severe threshold

2″ or larger 19 hen egg class and up

Largest recorded 3.0″ tea cup · July 13, 2023

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 Winona County

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

Most recent recorded events

Latest 8 of 224 recorded events · data through April 2026
Date	Size	Comparable to
April 17, 2026	1.5″	Ping-pong ball
April 17, 2026	1.0″	Quarter
April 17, 2026	1.0″	Quarter
May 15, 2025	1.0″	Quarter
May 15, 2025	1.0″	Quarter
May 15, 2025	1.0″	Quarter
May 15, 2025	1.0″	Quarter
April 28, 2025	0.75″	Penny

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

From the storm reports

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

April 17, 2026 · 1.0″ (quarter)

Emergency management reported quarter sized hail in Altura.

July 13, 2023 · 3.0″ (tea cup)

Public reported tea cup sized hail between Altura and Lewiston that shattered a trailer house window and damaged cars.

July 13, 2023 · 3.0″ (tea cup)

Public reported hen egg to tea cup sized hail near Altura that broke through a roof of a greenhouse.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	2	9	1	30	65	43	73

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 Winona County

Has it ever hailed in Winona County?

Yes — 224 hail events have been recorded for Winona County, MN in the NOAA Storm Events Database since 1959, including 124 of 1″ (quarter size) or larger.

When did it last hail in Winona County?

The most recent recorded hail event for Winona County, MN is April 17, 2026, with 1.5″ (ping-pong ball) 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 Winona County?

3.0″ (tea cup), recorded on July 13, 2023. 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 Minnesota hail history

All 87 Minnesota 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.