Hail history for Knox County, TX

Knox County has 267 recorded hail events in the NOAA Storm Events Database — 173 of them 1″ or larger and 29 at 2″ or larger. The largest on record: 4.5″ (grapefruit) on May 25, 1980.

Records 1950–present Data through April 2026 Peak month May

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 267 since 1957

1″ or larger 173 NWS severe threshold

2″ or larger 29 hen egg class and up

Largest recorded 4.5″ grapefruit · May 25, 1980

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 Knox County

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

Most recent recorded events

Latest 8 of 267 recorded events · data through April 2026
Date	Size	Comparable to
March 10, 2026	1.75″	Golf ball
April 29, 2025	0.75″	Penny
April 29, 2025	1.0″	Quarter
April 29, 2025	1.75″	Golf ball
April 29, 2025	3.0″	Tea cup
April 29, 2025	1.0″	Quarter
April 29, 2025	1.0″	Quarter
May 4, 2024	0.88″	Nickel

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

From the storm reports

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

April 29, 2025 · 1.0″ (quarter)

The report was relayed through mPING.

April 22, 2015 · 3.0″ (tea cup)

No damage reported.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
1	2	3	36	89	78	27	31

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 Knox County

Has it ever hailed in Knox County?

Yes — 267 hail events have been recorded for Knox County, TX in the NOAA Storm Events Database since 1957, including 173 of 1″ (quarter size) or larger.

When did it last hail in Knox County?

The most recent recorded hail event for Knox County, TX is March 10, 2026, with 1.75″ (golf ball) 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 Knox County?

4.5″ (grapefruit), recorded on May 25, 1980. 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 Texas hail history

All 254 Texas 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.