Hail history for Twin Falls County, ID

Twin Falls County has 48 recorded hail events in the NOAA Storm Events Database — 26 of them 1″ or larger and 1 at 2″ or larger. The largest on record: 2.0″ (hen egg) on July 21, 1970.

Records 1950–present Data through April 2026 Peak month June

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 48 since 1963

1″ or larger 26 NWS severe threshold

2″ or larger 1 hen egg class and up

Largest recorded 2.0″ hen egg · July 21, 1970

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 Twin Falls County

Recorded events by month, 1950–present. The amber bar marks Twin Falls County's peak: June.

Most recent recorded events

Latest 8 of 48 recorded events · data through April 2026
Date	Size	Comparable to
May 26, 2023	1.25″	Half dollar
May 26, 2023	1.0″	Quarter
May 25, 2023	1.0″	Quarter
September 9, 2019	1.5″	Ping-pong ball
September 9, 2019	1.0″	Quarter
September 9, 2019	1.0″	Quarter
September 9, 2019	1.25″	Half dollar
May 30, 2018	1.25″	Half dollar

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

From the storm reports

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

May 26, 2023 · 1.0″ (quarter)

A trained spotter reported one inch hail near Amsterdam, ID.

September 9, 2019 · 1.5″ (ping-pong ball)

A picture of large hailstones in the Kimberly and Hanson areas was posted on Twitter.

August 21, 2014 · 1.75″ (golf ball)

Large hail up to 1.75 inches was reported near Twin Falls, Castleford and Buhl.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	3	3	3	13	11	12	3

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 Twin Falls County

Has it ever hailed in Twin Falls County?

Yes — 48 hail events have been recorded for Twin Falls County, ID in the NOAA Storm Events Database since 1963, including 26 of 1″ (quarter size) or larger.

When did it last hail in Twin Falls County?

The most recent recorded hail event for Twin Falls County, ID is May 26, 2023, with 1.25″ (half dollar) 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 Twin Falls County?

2.0″ (hen egg), recorded on July 21, 1970. 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.