Hail history for Natrona County, WY

Natrona County has 165 recorded hail events in the NOAA Storm Events Database — 113 of them 1″ or larger and 12 at 2″ or larger. The largest on record: 3.0″ (tea cup) on May 29, 1964.

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 165 since 1959

1″ or larger 113 NWS severe threshold

2″ or larger 12 hen egg class and up

Largest recorded 3.0″ tea cup · May 29, 1964

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 Natrona County

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

Most recent recorded events

Latest 8 of 165 recorded events · data through April 2026
Date	Size	Comparable to
July 29, 2025	0.88″	Nickel
July 29, 2025	0.88″	Nickel
June 16, 2025	1.0″	Quarter
June 16, 2025	2.25″	Tennis ball
June 16, 2025	2.0″	Hen egg
September 10, 2023	1.0″	Quarter
September 10, 2023	1.75″	Golf ball
July 6, 2023	1.75″	Golf ball

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

From the storm reports

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

July 29, 2025 · 0.88″ (nickel)

A trained spotter reported nickel size hail to the west of Mills.

June 23, 2023 · 2.5″ (tennis ball)

A supercell thunderstorm moved across northern Natrona County and brought very large hail to the south of Midwest. Hail almost baseball size fell in a farm to south of Midwest as well as along Interstate 25.

June 22, 2013 · 2.75″ (baseball)

Vehicles were forced to pull over near Powder River as baseball sized hail fell from a second severe thunderstorm.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	6	7	8	11	58	53	20

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 Natrona County

Has it ever hailed in Natrona County?

Yes — 165 hail events have been recorded for Natrona County, WY in the NOAA Storm Events Database since 1959, including 113 of 1″ (quarter size) or larger.

When did it last hail in Natrona County?

The most recent recorded hail event for Natrona County, WY is July 29, 2025, with 0.88″ (nickel) 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 Natrona County?

3.0″ (tea cup), recorded on May 29, 1964. 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.