Hail history for Fallon County, MT

Fallon County has 184 recorded hail events in the NOAA Storm Events Database — 133 of them 1″ or larger and 17 at 2″ or larger. The largest on record: 4.0″ (softball) on July 11, 1981.

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 184 since 1962

1″ or larger 133 NWS severe threshold

2″ or larger 17 hen egg class and up

Largest recorded 4.0″ softball · July 11, 1981

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 Fallon County

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

Most recent recorded events

Latest 8 of 184 recorded events · data through April 2026
Date	Size	Comparable to
July 25, 2025	1.25″	Half dollar
July 25, 2025	1.0″	Quarter
July 20, 2025	1.0″	Quarter
June 25, 2025	1.75″	Golf ball
June 25, 2025	1.0″	Quarter
June 20, 2025	2.0″	Hen egg
May 29, 2024	1.25″	Half dollar
July 11, 2023	1.75″	Golf ball

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

From the storm reports

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

July 25, 2025 · 1.0″ (quarter)

Estimated hail that occurred near spotter.

July 9, 2007 · 2.75″ (baseball)

Baseball size hail with a few softball size hailstones were reported just south of Baker.

July 10, 2004 · 2.75″ (baseball)

Baseball sized hail damaged several homes and vehicles.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	2	3	3	17	80	56	23

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 Fallon County

Has it ever hailed in Fallon County?

Yes — 184 hail events have been recorded for Fallon County, MT in the NOAA Storm Events Database since 1962, including 133 of 1″ (quarter size) or larger.

When did it last hail in Fallon County?

The most recent recorded hail event for Fallon County, MT is July 25, 2025, with 1.25″ (half dollar) 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 Fallon County?

4.0″ (softball), recorded on July 11, 1981. 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.