HailHistory › Hail by county › Colorado › Summit County

Colorado · county FIPS 08117

Hail history for Summit County, CO

Summit County has 2 recorded hail events in the NOAA Storm Events Database — 1 of them 1″ or larger. The largest on record: 1.0″ (quarter) on June 12, 1988.

Records 1950–present Data through April 2026
Core sample · every recorded event, 1955–2026
1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s 1955 through 2026 largest · 1.0″ quarter June 12, 1988

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 2 since 1988
1″ or larger 1 NWS severe threshold
2″ or larger 0 hen egg class and up
Largest recorded 1.0″ quarter · June 12, 1988
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.

Most recent recorded events

Latest 2 of 2 recorded events · data through April 2026
DateSizeComparable to
0.75″ Penny
1.0″ Quarter

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

Events by decade

1950s1960s1970s1980s1990s2000s2010s2020s
00010001

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 Summit County

Has it ever hailed in Summit County?

Yes — 2 hail events have been recorded for Summit County, CO in the NOAA Storm Events Database since 1988, including 1 of 1″ (quarter size) or larger.

When did it last hail in Summit County?

The most recent recorded hail event for Summit County, CO is June 8, 2024, with 0.75″ (penny) 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 Summit County?

1.0″ (quarter), recorded on June 12, 1988. 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 Colorado hail history

All 64 Colorado 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.