Hail history for Frederick County, MD

Frederick County has 86 recorded hail events in the NOAA Storm Events Database — 57 of them 1″ or larger and 2 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on May 15, 2018.

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 86 since 1957

1″ or larger 57 NWS severe threshold

2″ or larger 2 hen egg class and up

Largest recorded 2.5″ tennis ball · May 15, 2018

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 Frederick County

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

Most recent recorded events

Latest 8 of 86 recorded events · data through April 2026
Date	Size	Comparable to
March 16, 2025	1.0″	Quarter
March 16, 2025	1.0″	Quarter
August 29, 2024	1.0″	Quarter
May 23, 2024	1.0″	Quarter
September 7, 2023	1.0″	Quarter
September 7, 2023	1.5″	Ping-pong ball
June 26, 2023	1.0″	Quarter
August 7, 2020	1.0″	Quarter

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

From the storm reports

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

March 16, 2025 · 1.0″ (quarter)

Quarter size hail was reported in Middletown.

May 15, 2018 · 2.5″ (tennis ball)

Tennis ball sized hail was reported.

May 10, 2000 · 2.5″ (tennis ball)

Tennis ball sized hail fell.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	3	1	3	12	26	31	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 Frederick County

Has it ever hailed in Frederick County?

Yes — 86 hail events have been recorded for Frederick County, MD in the NOAA Storm Events Database since 1957, including 57 of 1″ (quarter size) or larger.

When did it last hail in Frederick County?

The most recent recorded hail event for Frederick County, MD is March 16, 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 Frederick County?

2.5″ (tennis ball), recorded on May 15, 2018. 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 Maryland hail history

All 24 Maryland 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.