Hail history for Jersey County, IL

Jersey County has 85 recorded hail events in the NOAA Storm Events Database — 52 of them 1″ or larger and 5 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on April 27, 2026.

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 85 since 1959

1″ or larger 52 NWS severe threshold

2″ or larger 5 hen egg class and up

Largest recorded 2.5″ tennis ball · April 27, 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 Jersey County

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

Most recent recorded events

Latest 8 of 85 recorded events · data through April 2026
Date	Size	Comparable to
April 27, 2026	2.5″	Tennis ball
April 27, 2026	1.0″	Quarter
April 27, 2026	1.5″	Ping-pong ball
April 20, 2023	1.0″	Quarter
February 22, 2023	1.0″	Quarter
February 28, 2017	0.88″	Nickel
October 20, 2016	0.75″	Penny
April 27, 2016	0.75″	Penny

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

From the storm reports

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

April 9, 2015 · 2.25″ (tennis ball)

Large hail fell in a swath from Otterville to Jerseyville. The largest stones were 2.25 inches in diameter.

June 25, 2011 · 2.0″ (hen egg)

Most of the hail was an inch or less in size.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	2	3	5	10	37	22	5

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 Jersey County

Has it ever hailed in Jersey County?

Yes — 85 hail events have been recorded for Jersey County, IL in the NOAA Storm Events Database since 1959, including 52 of 1″ (quarter size) or larger.

When did it last hail in Jersey County?

The most recent recorded hail event for Jersey County, IL is April 27, 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 Jersey County?

2.5″ (tennis ball), recorded on April 27, 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 Illinois hail history

All 102 Illinois 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.