Hail history for Liberty County, MT

Liberty County has 52 recorded hail events in the NOAA Storm Events Database — 34 of them 1″ or larger and 4 at 2″ or larger. The largest on record: 3.0″ (tea cup) on August 10, 1957.

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 52 since 1956

1″ or larger 34 NWS severe threshold

2″ or larger 4 hen egg class and up

Largest recorded 3.0″ tea cup · August 10, 1957

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 Liberty County

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

Most recent recorded events

Latest 8 of 52 recorded events · data through April 2026
Date	Size	Comparable to
July 9, 2022	0.75″	Penny
July 8, 2022	1.0″	Quarter
July 8, 2022	1.5″	Ping-pong ball
July 6, 2022	2.5″	Tennis ball
July 31, 2020	1.75″	Golf ball
July 31, 2020	2.0″	Hen egg
June 13, 2020	1.5″	Ping-pong ball
May 12, 2017	1.0″	Quarter

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

From the storm reports

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

July 8, 2022 · 1.5″ (ping-pong ball)

Trained spotter reported 1.00 to 1.50 inch hail, with 30 mph winds.

July 6, 2022 · 2.5″ (tennis ball)

Largest hail stone was tennis ball, with most stones averaging ping pong size. Leaves on trees were shredded, with damage done to shingles and windows of house/vehicles.

July 31, 2020 · 2.0″ (hen egg)

A trained spotter reported ping pong ball (1.5 inch diameter) to lime (2 inch diameter) size hail and gusty winds in excess of 50 mph. Heavy rain also caused some flooding.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
3	4	0	4	11	17	6	7

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 Liberty County

Has it ever hailed in Liberty County?

Yes — 52 hail events have been recorded for Liberty County, MT in the NOAA Storm Events Database since 1956, including 34 of 1″ (quarter size) or larger.

When did it last hail in Liberty County?

The most recent recorded hail event for Liberty County, MT is July 9, 2022, with 0.75″ (penny) 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 Liberty County?

3.0″ (tea cup), recorded on August 10, 1957. 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.