Hail history for San Juan County, UT

San Juan County has 32 recorded hail events in the NOAA Storm Events Database — 24 of them 1″ or larger. The largest on record: 1.75″ (golf ball) on June 6, 2020.

Records 1950–present Data through April 2026 Peak month September

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 32 since 1957

1″ or larger 24 NWS severe threshold

2″ or larger 0 hen egg class and up

Largest recorded 1.75″ golf ball · June 6, 2020

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 San Juan County

Recorded events by month, 1950–present. The amber bar marks San Juan County's peak: September.

Most recent recorded events

Latest 8 of 32 recorded events · data through April 2026
Date	Size	Comparable to
August 23, 2024	0.88″	Nickel
June 21, 2024	1.0″	Quarter
June 21, 2024	1.5″	Ping-pong ball
June 6, 2020	1.25″	Half dollar
June 6, 2020	1.5″	Ping-pong ball
June 6, 2020	1.0″	Quarter
June 6, 2020	1.75″	Golf ball
June 6, 2020	1.25″	Half dollar

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

From the storm reports

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

August 23, 2024 · 0.88″ (nickel)

A strong thunderstorm passed over the Fry Canyon area and produced hail up to nickel size.

June 6, 2020 · 1.75″ (golf ball)

A severe thunderstorm produced large hail measured to be the size of golf balls in Blanding.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	0	0	1	2	6	13	9

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 San Juan County

Has it ever hailed in San Juan County?

Yes — 32 hail events have been recorded for San Juan County, UT in the NOAA Storm Events Database since 1957, including 24 of 1″ (quarter size) or larger.

When did it last hail in San Juan County?

The most recent recorded hail event for San Juan County, UT is August 23, 2024, with 0.88″ (nickel) 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 San Juan County?

1.75″ (golf ball), recorded on June 6, 2020. Hail that size meets or exceeds the National Weather Service severe threshold. 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 Utah hail history

All 29 Utah 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.