Hail history for Jo Daviess County, IL

Jo Daviess County has 113 recorded hail events in the NOAA Storm Events Database — 73 of them 1″ or larger and 5 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on July 24, 2009.

Records 1950–present Data through April 2026 Peak month April

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 113 since 1965

1″ or larger 73 NWS severe threshold

2″ or larger 5 hen egg class and up

Largest recorded 2.5″ tennis ball · July 24, 2009

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 Jo Daviess County

Recorded events by month, 1950–present. The amber bar marks Jo Daviess County's peak: April.

Most recent recorded events

Latest 8 of 113 recorded events · data through April 2026
Date	Size	Comparable to
April 17, 2026	1.0″	Quarter
April 17, 2026	1.25″	Half dollar
April 17, 2026	1.0″	Quarter
April 17, 2026	1.75″	Golf ball
April 17, 2026	1.5″	Ping-pong ball
April 17, 2026	1.75″	Golf ball
April 17, 2026	1.0″	Quarter
April 17, 2026	1.75″	Golf ball

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

From the storm reports

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

April 17, 2026 · 1.25″ (half dollar)

Reported from Mping.

July 24, 2009 · 2.5″ (tennis ball)

Tennis ball-sized hail fell 2 miles north of Stockton, IL around 558 pm July 24.

July 20, 2004 · 2.5″ (tennis ball)

Also reported by law enforcement and the general public. Hail ranged in size from 1.50 inches to 2.50 inches.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	1	5	2	8	40	30	27

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 Jo Daviess County

Has it ever hailed in Jo Daviess County?

Yes — 113 hail events have been recorded for Jo Daviess County, IL in the NOAA Storm Events Database since 1965, including 73 of 1″ (quarter size) or larger.

When did it last hail in Jo Daviess County?

The most recent recorded hail event for Jo Daviess County, IL is April 17, 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 Jo Daviess County?

2.5″ (tennis ball), recorded on July 24, 2009. 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.