Hail history for Jackson County, WI

Jackson County has 122 recorded hail events in the NOAA Storm Events Database — 70 of them 1″ or larger and 5 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on April 14, 2026.

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 122 since 1962

1″ or larger 70 NWS severe threshold

2″ or larger 5 hen egg class and up

Largest recorded 2.5″ tennis ball · April 14, 2026

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 Jackson County

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

Most recent recorded events

Latest 8 of 122 recorded events · data through April 2026
Date	Size	Comparable to
April 14, 2026	2.5″	Tennis ball
April 13, 2026	0.88″	Nickel
April 13, 2026	0.75″	Penny
April 13, 2026	1.75″	Golf ball
April 13, 2026	1.75″	Golf ball
May 15, 2025	1.0″	Quarter
May 15, 2025	1.75″	Golf ball
May 18, 2024	1.5″	Ping-pong ball

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

From the storm reports

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

April 14, 2026 · 2.5″ (tennis ball)

The public reported tennis ball sized hail in Millston. The report was relayed via social media.

July 13, 2015 · 2.5″ (tennis ball)

Up to tennis ball sized hail fell southeast of Osseo. The hail cracked sky lights on a home.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	3	5	6	10	56	28	14

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 Jackson County

Has it ever hailed in Jackson County?

Yes — 122 hail events have been recorded for Jackson County, WI in the NOAA Storm Events Database since 1962, including 70 of 1″ (quarter size) or larger.

When did it last hail in Jackson County?

The most recent recorded hail event for Jackson County, WI is April 14, 2026, with 2.5″ (tennis 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 Jackson County?

2.5″ (tennis ball), recorded on April 14, 2026. Hail that size meets or exceeds the National Weather Service severe threshold. 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.