Hail history for Sanilac County, MI

Sanilac County has 64 recorded hail events in the NOAA Storm Events Database — 31 of them 1″ or larger and 5 at 2″ or larger. The largest on record: 2.75″ (baseball) on July 28, 1999.

Records 1950–present Data through April 2026 Peak month August

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 64 since 1977

1″ or larger 31 NWS severe threshold

2″ or larger 5 hen egg class and up

Largest recorded 2.75″ baseball · July 28, 1999

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 Sanilac County

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

Most recent recorded events

Latest 8 of 64 recorded events · data through April 2026
Date	Size	Comparable to
July 20, 2022	1.0″	Quarter
April 7, 2020	1.75″	Golf ball
April 7, 2020	1.75″	Golf ball
April 7, 2020	1.25″	Half dollar
August 11, 2017	1.0″	Quarter
June 8, 2015	1.0″	Quarter
July 10, 2013	0.88″	Nickel
March 15, 2012	1.75″	Golf ball

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

From the storm reports

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

July 24, 1994 · 1.0″ (quarter)

A skywarn spotter reported quarter-size hail in Decker.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	0	1	3	16	30	10	4

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 Sanilac County

Has it ever hailed in Sanilac County?

Yes — 64 hail events have been recorded for Sanilac County, MI in the NOAA Storm Events Database since 1977, including 31 of 1″ (quarter size) or larger.

When did it last hail in Sanilac County?

The most recent recorded hail event for Sanilac County, MI is July 20, 2022, 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 Sanilac County?

2.75″ (baseball), recorded on July 28, 1999. 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 Michigan hail history

All 83 Michigan 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.