Hail history for Blaine County, MT

Blaine County has 102 recorded hail events in the NOAA Storm Events Database — 73 of them 1″ or larger and 12 at 2″ or larger. The largest on record: 4.0″ (softball) on July 13, 2024.

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 102 since 1957

1″ or larger 73 NWS severe threshold

2″ or larger 12 hen egg class and up

Largest recorded 4.0″ softball · July 13, 2024

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 Blaine County

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

Most recent recorded events

Latest 8 of 102 recorded events · data through April 2026
Date	Size	Comparable to
July 26, 2025	1.75″	Golf ball
July 13, 2024	1.75″	Golf ball
July 13, 2024	4.0″	Softball
July 13, 2024	1.0″	Quarter
July 13, 2024	1.0″	Quarter
July 13, 2024	1.75″	Golf ball
July 13, 2024	1.0″	Quarter
July 13, 2024	2.5″	Tennis ball

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

From the storm reports

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

July 26, 2025 · 1.75″ (golf ball)

Video on social media showed hail size up to 1.75 inches.

July 13, 2024 · 4.0″ (softball)

Lots of baseball sized hail with a few softball sized hail stones mixed in. Lots of wind was reported with the hail. Time approximated by radar. Reported by a storm chaser.

July 13, 2024 · 2.5″ (tennis ball)

Public report on Facebook. Egg to tennis ball sized hail caused damage to windows. Time estimated using radar.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	5	3	3	8	36	21	24

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 Blaine County

Has it ever hailed in Blaine County?

Yes — 102 hail events have been recorded for Blaine County, MT in the NOAA Storm Events Database since 1957, including 73 of 1″ (quarter size) or larger.

When did it last hail in Blaine County?

The most recent recorded hail event for Blaine County, MT is July 26, 2025, with 1.75″ (golf ball) 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 Blaine County?

4.0″ (softball), recorded on July 13, 2024. 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.