Hail history for Lemhi County, ID

Lemhi 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 August 18, 2024.

Records 1950–present Data through April 2026 Peak month August

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 1966

1″ or larger 24 NWS severe threshold

2″ or larger 0 hen egg class and up

Largest recorded 1.75″ golf ball · August 18, 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 Lemhi County

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

Most recent recorded events

Latest 8 of 32 recorded events · data through April 2026
Date	Size	Comparable to
August 18, 2024	1.75″	Golf ball
August 10, 2019	1.0″	Quarter
May 26, 2018	1.0″	Quarter
August 7, 2016	1.75″	Golf ball
August 7, 2016	1.75″	Golf ball
July 14, 2014	0.75″	Penny
August 1, 2013	1.5″	Ping-pong ball
August 1, 2013	1.5″	Ping-pong ball

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

From the storm reports

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

August 18, 2024 · 1.75″ (golf ball)

A severe thunderstorm produced golf ball sized hail.

August 7, 2016 · 1.75″ (golf ball)

A spotter in Elk Bend reported golf ball sized hail that smashed approximately 6 car windows.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	1	1	4	2	14	9	1

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 Lemhi County

Has it ever hailed in Lemhi County?

Yes — 32 hail events have been recorded for Lemhi County, ID in the NOAA Storm Events Database since 1966, including 24 of 1″ (quarter size) or larger.

When did it last hail in Lemhi County?

The most recent recorded hail event for Lemhi County, ID is August 18, 2024, 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 Lemhi County?

1.75″ (golf ball), recorded on August 18, 2024. 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 Idaho hail history

All 44 Idaho 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.