Hail history for Johnson County, WY

Johnson County has 152 recorded hail events in the NOAA Storm Events Database — 94 of them 1″ or larger and 9 at 2″ or larger. The largest on record: 3.0″ (tea cup) on June 10, 2014.

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 152 since 1961

1″ or larger 94 NWS severe threshold

2″ or larger 9 hen egg class and up

Largest recorded 3.0″ tea cup · June 10, 2014

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 Johnson County

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

Most recent recorded events

Latest 8 of 152 recorded events · data through April 2026
Date	Size	Comparable to
September 12, 2025	1.0″	Quarter
July 29, 2025	1.5″	Ping-pong ball
July 23, 2025	0.75″	Penny
June 14, 2025	1.25″	Half dollar
August 19, 2024	1.0″	Quarter
July 6, 2023	1.75″	Golf ball
June 28, 2023	1.5″	Ping-pong ball
June 23, 2023	2.75″	Baseball

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

From the storm reports

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

July 29, 2025 · 1.5″ (ping-pong ball)

The public reported ping pong ball sized hail along Interstate 25 to the south of Buffalo.

June 23, 2023 · 2.75″ (baseball)

A supercell thunderstorm developed in the lee of the Bighorn range and brought large hail from Barnum to Kaycee. Hail the size of baseballs fell near Barnum with quarter size hail reported in Kaycee.

June 10, 2014 · 3.0″ (tea cup)

Golf ball sized and larger hail fell at a ranch east of Kaycee along State Highway 192. The largest stones were 3 inches in diameter. The large hail broke windows and screens, cracked a few windshields, and caused minor damage to ranch buildings.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	4	2	7	13	49	63	14

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 Johnson County

Has it ever hailed in Johnson County?

Yes — 152 hail events have been recorded for Johnson County, WY in the NOAA Storm Events Database since 1961, including 94 of 1″ (quarter size) or larger.

When did it last hail in Johnson County?

The most recent recorded hail event for Johnson County, WY is September 12, 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 Johnson County?

3.0″ (tea cup), recorded on June 10, 2014. 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 Wyoming hail history

All 23 Wyoming 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.