Hail history for Clackamas County, OR

Clackamas County has 14 recorded hail events in the NOAA Storm Events Database — 6 of them 1″ or larger. The largest on record: 1.75″ (golf ball) on August 4, 1999.

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 14 since 1996

1″ or larger 6 NWS severe threshold

2″ or larger 0 hen egg class and up

Largest recorded 1.75″ golf ball · August 4, 1999

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 Clackamas County

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

Most recent recorded events

Latest 8 of 14 recorded events · data through April 2026
Date	Size	Comparable to
February 24, 2025	1.0″	Quarter
August 17, 2024	1.5″	Ping-pong ball
April 14, 2022	0.25″	Pea
April 20, 2016	1.0″	Quarter
August 10, 2013	1.5″	Ping-pong ball
August 9, 2013	0.88″	Nickel
June 9, 2009	0.75″	Penny
June 29, 2008	0.5″	Mothball

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

From the storm reports

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

February 24, 2025 · 1.0″ (quarter)

Photo emailed to us showed hail approximately one inch in diameter at the intersection of HWY 213 and Thomas Rd. Time estimated from Radar.

August 17, 2024 · 1.5″ (ping-pong ball)

Multiple reports of 1 to 1.5 inch hail from trained spotter and photographs on social media.

August 4, 1999 · 1.75″ (golf ball)

Another thunderstorm in a very active convective evening produced 1 3/4 inch hail in Sandy.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	0	0	0	2	6	3	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 Clackamas County

Has it ever hailed in Clackamas County?

Yes — 14 hail events have been recorded for Clackamas County, OR in the NOAA Storm Events Database since 1996, including 6 of 1″ (quarter size) or larger.

When did it last hail in Clackamas County?

The most recent recorded hail event for Clackamas County, OR is February 24, 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 Clackamas County?

1.75″ (golf ball), recorded on August 4, 1999. 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 Oregon hail history

All 36 Oregon 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.