Hail history for Bon Homme County, SD

Bon Homme County has 226 recorded hail events in the NOAA Storm Events Database — 127 of them 1″ or larger and 15 at 2″ or larger. The largest on record: 5.0″ (grapefruit) on July 17, 1965.

Records 1950–present Data through April 2026 Peak month July

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 226 since 1960

1″ or larger 127 NWS severe threshold

2″ or larger 15 hen egg class and up

Largest recorded 5.0″ grapefruit · July 17, 1965

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 Bon Homme County

Recorded events by month, 1950–present. The amber bar marks Bon Homme County's peak: July.

Most recent recorded events

Latest 8 of 226 recorded events · data through April 2026
Date	Size	Comparable to
July 9, 2025	1.0″	Quarter
July 9, 2025	0.88″	Nickel
June 16, 2025	1.75″	Golf ball
April 28, 2025	1.25″	Half dollar
July 30, 2023	1.75″	Golf ball
July 24, 2023	1.75″	Golf ball
July 24, 2023	1.0″	Quarter
July 24, 2023	1.0″	Quarter

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

From the storm reports

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

June 16, 2025 · 1.75″ (golf ball)

Although some hail was as big as a golf ball, most stones were dime to quarter size.

August 8, 2009 · 4.0″ (softball)

Large hail broke windows in vehicles and homes, dented vehicles, damaged roofs and siding, and caused crop damage. Some of the windows were completely shattered. The amount of property and crop damage was not known.

August 8, 2009 · 2.75″ (baseball)

Large hail smashed windows on vehicles and buildings, dented vehicles, damaged roofs, and damaged crops. The amount of crop damage was not known.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	12	3	14	15	104	44	34

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 Bon Homme County

Has it ever hailed in Bon Homme County?

Yes — 226 hail events have been recorded for Bon Homme County, SD in the NOAA Storm Events Database since 1960, including 127 of 1″ (quarter size) or larger.

When did it last hail in Bon Homme County?

The most recent recorded hail event for Bon Homme County, SD is July 9, 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 Bon Homme County?

5.0″ (grapefruit), recorded on July 17, 1965. 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 South Dakota hail history

All 66 South Dakota 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.