Hail history for Dawson County, MT

Dawson County has 243 recorded hail events in the NOAA Storm Events Database — 156 of them 1″ or larger and 17 at 2″ or larger. The largest on record: 4.0″ (softball) on June 8, 2021.

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 243 since 1958

1″ or larger 156 NWS severe threshold

2″ or larger 17 hen egg class and up

Largest recorded 4.0″ softball · June 8, 2021

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 Dawson County

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

Most recent recorded events

Latest 8 of 243 recorded events · data through April 2026
Date	Size	Comparable to
August 7, 2025	1.0″	Quarter
August 7, 2025	1.0″	Quarter
August 7, 2025	1.0″	Quarter
August 7, 2025	1.0″	Quarter
August 7, 2025	1.0″	Quarter
August 7, 2025	2.0″	Hen egg
July 19, 2025	2.0″	Hen egg
September 17, 2024	1.75″	Golf ball

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

From the storm reports

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

August 7, 2025 · 2.0″ (hen egg)

Public reported hail lasting about 20 minutes. The largest hail stones were hen egg size.

June 10, 2021 · 3.0″ (tea cup)

Trained spotter reported tea cup size hail.

June 8, 2021 · 4.0″ (softball)

Public reported multiple sizes of hail stones via Facebook. The largest hail stone size of softball was measured.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	4	3	6	34	101	66	27

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 Dawson County

Has it ever hailed in Dawson County?

Yes — 243 hail events have been recorded for Dawson County, MT in the NOAA Storm Events Database since 1958, including 156 of 1″ (quarter size) or larger.

When did it last hail in Dawson County?

The most recent recorded hail event for Dawson 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 Dawson County?

4.0″ (softball), recorded on June 8, 2021. 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.