Hail history for St. Croix County, WI

St. Croix County has 181 recorded hail events in the NOAA Storm Events Database — 120 of them 1″ or larger and 15 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on June 19, 1988.

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 181 since 1975

1″ or larger 120 NWS severe threshold

2″ or larger 15 hen egg class and up

Largest recorded 4.5″ grapefruit · June 19, 1988

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 St. Croix County

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

Most recent recorded events

Latest 8 of 181 recorded events · data through April 2026
Date	Size	Comparable to
September 21, 2025	1.0″	Quarter
July 3, 2025	1.25″	Half dollar
June 30, 2025	1.0″	Quarter
June 19, 2025	1.25″	Half dollar
June 19, 2025	1.75″	Golf ball
June 19, 2025	1.75″	Golf ball
June 19, 2025	1.0″	Quarter
June 19, 2025	1.25″	Half dollar

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

From the storm reports

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

July 3, 2025 · 1.25″ (half dollar)

Photo report via Facebook confirmed hail with up to 1.25 inch diameter in Emerald, WI.

September 20, 2022 · 2.75″ (baseball)

Social media had pictures of very large hail, up to baseball size on the northwest and northern side of River Falls, Wisconsin.

May 25, 2008 · 2.0″ (hen egg)

At Highway 64 and 240th St.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	0	4	6	23	61	28	59

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 St. Croix County

Has it ever hailed in St. Croix County?

Yes — 181 hail events have been recorded for St. Croix County, WI in the NOAA Storm Events Database since 1975, including 120 of 1″ (quarter size) or larger.

When did it last hail in St. Croix County?

The most recent recorded hail event for St. Croix County, WI is September 21, 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 St. Croix County?

4.5″ (grapefruit), recorded on June 19, 1988. 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.