Hail history for Trempealeau County, WI

Trempealeau County has 204 recorded hail events in the NOAA Storm Events Database — 136 of them 1″ or larger and 19 at 2″ or larger. The largest on record: 3.5″ (softball) on July 6, 2017.

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 204 since 1963

1″ or larger 136 NWS severe threshold

2″ or larger 19 hen egg class and up

Largest recorded 3.5″ softball · July 6, 2017

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 Trempealeau County

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

Most recent recorded events

Latest 8 of 204 recorded events · data through April 2026
Date	Size	Comparable to
April 13, 2026	1.0″	Quarter
April 13, 2026	0.88″	Nickel
April 13, 2026	1.75″	Golf ball
April 13, 2026	1.75″	Golf ball
April 13, 2026	1.0″	Quarter
May 15, 2025	1.0″	Quarter
May 15, 2025	1.0″	Quarter
May 15, 2025	1.0″	Quarter

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

From the storm reports

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

April 13, 2026 · 1.0″ (quarter)

The public reported quarter sized hail near Strum.

July 28, 2023 · 3.0″ (tea cup)

Trained spotter reported tea cup sized hail near Galesville.

July 6, 2017 · 3.5″ (softball)

Hail, ranging in size from eggs and baseballs up to 3.5 inches in diameter, fell in Trempealeau. The 3.5 inch diameter hail broke numerous windows at a mobile home park.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	5	4	7	17	57	79	35

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 Trempealeau County

Has it ever hailed in Trempealeau County?

Yes — 204 hail events have been recorded for Trempealeau County, WI in the NOAA Storm Events Database since 1963, including 136 of 1″ (quarter size) or larger.

When did it last hail in Trempealeau County?

The most recent recorded hail event for Trempealeau County, WI is April 13, 2026, 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 Trempealeau County?

3.5″ (softball), recorded on July 6, 2017. 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 Wisconsin hail history

All 72 Wisconsin 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.