Hail history for Fergus County, MT

Fergus County has 251 recorded hail events in the NOAA Storm Events Database — 185 of them 1″ or larger and 22 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on June 26, 1996.

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 251 since 1956

1″ or larger 185 NWS severe threshold

2″ or larger 22 hen egg class and up

Largest recorded 4.5″ grapefruit · June 26, 1996

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 Fergus County

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

Most recent recorded events

Latest 8 of 251 recorded events · data through April 2026
Date	Size	Comparable to
August 7, 2025	1.0″	Quarter
August 7, 2025	1.0″	Quarter
August 1, 2025	2.0″	Hen egg
July 28, 2025	2.5″	Tennis ball
June 15, 2025	1.0″	Quarter
June 15, 2025	2.0″	Hen egg
June 15, 2025	1.5″	Ping-pong ball
June 15, 2025	1.25″	Half dollar

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

From the storm reports

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

August 7, 2025 · 1.0″ (quarter)

Spotter estimated hail up to an inch in size.

August 6, 2002 · 3.5″ (softball)

A severe thunderstorm produced 3.50 inch hail at Grassrange 9N.

July 20, 2001 · 3.0″ (tea cup)

Actual spotter location Hilger 5 N...Near total crop damage (monetary total of crop damage unknown).

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
5	10	8	5	34	103	53	33

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 Fergus County

Has it ever hailed in Fergus County?

Yes — 251 hail events have been recorded for Fergus County, MT in the NOAA Storm Events Database since 1956, including 185 of 1″ (quarter size) or larger.

When did it last hail in Fergus County?

The most recent recorded hail event for Fergus County, MT is August 7, 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 Fergus County?

4.5″ (grapefruit), recorded on June 26, 1996. 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.