Hail history for Rosebud County, MT

Rosebud County has 333 recorded hail events in the NOAA Storm Events Database — 207 of them 1″ or larger and 29 at 2″ or larger. The largest on record: 6.0″ (grapefruit) on July 11, 1965.

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 333 since 1958

1″ or larger 207 NWS severe threshold

2″ or larger 29 hen egg class and up

Largest recorded 6.0″ grapefruit · July 11, 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 Rosebud County

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

Most recent recorded events

Latest 8 of 333 recorded events · data through April 2026
Date	Size	Comparable to
July 5, 2025	1.0″	Quarter
August 21, 2024	1.0″	Quarter
June 27, 2024	1.5″	Ping-pong ball
June 27, 2024	1.0″	Quarter
July 11, 2023	1.75″	Golf ball
June 19, 2023	1.5″	Ping-pong ball
May 24, 2023	1.0″	Quarter
May 24, 2023	2.75″	Baseball

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

From the storm reports

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

July 5, 2025 · 1.0″ (quarter)

Hail 1 inch in diameter.

May 25, 2013 · 2.5″ (tennis ball)

A few hail stones were estimated to be 2 to 3 inches in diameter along I-94.

June 14, 2006 · 4.0″ (softball)

Mostly golf ball sized hail but a few grapefruit sized stones were seen.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	4	3	7	56	143	98	20

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 Rosebud County

Has it ever hailed in Rosebud County?

Yes — 333 hail events have been recorded for Rosebud County, MT in the NOAA Storm Events Database since 1958, including 207 of 1″ (quarter size) or larger.

When did it last hail in Rosebud County?

The most recent recorded hail event for Rosebud County, MT is July 5, 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 Rosebud County?

6.0″ (grapefruit), recorded on July 11, 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 Montana hail history

All 56 Montana 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.