Hail history for Chouteau County, MT

Chouteau County has 152 recorded hail events in the NOAA Storm Events Database — 107 of them 1″ or larger and 15 at 2″ or larger. The largest on record: 2.75″ (baseball) on June 4, 2012.

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 152 since 1958

1″ or larger 107 NWS severe threshold

2″ or larger 15 hen egg class and up

Largest recorded 2.75″ baseball · June 4, 2012

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 Chouteau County

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

Most recent recorded events

Latest 8 of 152 recorded events · data through April 2026
Date	Size	Comparable to
June 15, 2025	1.75″	Golf ball
June 15, 2025	1.75″	Golf ball
June 15, 2025	2.5″	Tennis ball
June 15, 2025	1.0″	Quarter
August 21, 2024	1.0″	Quarter
August 18, 2024	1.0″	Quarter
June 21, 2024	2.5″	Tennis ball
July 6, 2022	0.88″	Nickel

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

From the storm reports

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

June 15, 2025 · 2.5″ (tennis ball)

Report from social media.

June 15, 2025 · 1.0″ (quarter)

Social media report of one inch diameter hail in Fort Benton.

June 4, 2012 · 2.75″ (baseball)

Baseball sized hail, measuring 2.75 inches, was reported 2 miles W of Floweree. Damage to police vehicles was also reported.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	2	5	6	27	59	39	12

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 Chouteau County

Has it ever hailed in Chouteau County?

Yes — 152 hail events have been recorded for Chouteau County, MT in the NOAA Storm Events Database since 1958, including 107 of 1″ (quarter size) or larger.

When did it last hail in Chouteau County?

The most recent recorded hail event for Chouteau County, MT is June 15, 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 Chouteau County?

2.75″ (baseball), recorded on June 4, 2012. 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.