Hail history for Mercer County, ND

Mercer County has 148 recorded hail events in the NOAA Storm Events Database — 113 of them 1″ or larger and 23 at 2″ or larger. The largest on record: 5.0″ (grapefruit) on August 3, 1969.

Records 1950–present Data through April 2026 Peak month July

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 148 since 1966

1″ or larger 113 NWS severe threshold

2″ or larger 23 hen egg class and up

Largest recorded 5.0″ grapefruit · August 3, 1969

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 Mercer County

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

Most recent recorded events

Latest 8 of 148 recorded events · data through April 2026
Date	Size	Comparable to
September 16, 2024	1.0″	Quarter
September 16, 2024	1.75″	Golf ball
September 16, 2024	1.25″	Half dollar
July 14, 2024	1.5″	Ping-pong ball
July 14, 2024	1.0″	Quarter
July 12, 2024	1.0″	Quarter
August 1, 2023	1.75″	Golf ball
August 1, 2023	1.5″	Ping-pong ball

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

From the storm reports

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

May 27, 2023 · 1.5″ (ping-pong ball)

NWS had no reports of damage.

June 18, 2008 · 4.25″ (grapefruit)

The public reported hail up to the size of softballs. No report of damage was received from this event.

August 24, 2006 · 3.25″ (tea cup)

Extensive damage to 40 vehicles and several buildings at the Great River Energy Plant.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	2	5	8	22	45	44	22

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 Mercer County

Has it ever hailed in Mercer County?

Yes — 148 hail events have been recorded for Mercer County, ND in the NOAA Storm Events Database since 1966, including 113 of 1″ (quarter size) or larger.

When did it last hail in Mercer County?

The most recent recorded hail event for Mercer County, ND is September 16, 2024, 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 Mercer County?

5.0″ (grapefruit), recorded on August 3, 1969. Hail that size is destructive-class and typically damages roofs, vehicles, and siding. 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 North Dakota hail history

All 53 North Dakota 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.