HailHistory › Hail by county › Texas › Williamson County
Texas · county FIPS 48491
Hail history for Williamson County, TX
Williamson County has 452 recorded hail events in the NOAA Storm Events Database — 341 of them 1″ or larger and 56 at 2″ or larger. The largest on record: 4.0″ (softball) on May 30, 2024.
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.
When it hails in Williamson County
Recorded events by month, 1950–present. The amber bar marks Williamson County's peak: April.
Most recent recorded events
| Date | Size | Comparable to |
|---|---|---|
| 1.0″ | Quarter | |
| 0.88″ | Nickel | |
| 1.0″ | Quarter | |
| 1.5″ | Ping-pong ball | |
| 1.75″ | Golf ball | |
| 2.0″ | Hen egg | |
| 1.5″ | Ping-pong ball | |
| 1.25″ | Half dollar |
Looking for a specific storm? Use the did-it-hail date lookup for Williamson County.
From the storm reports
Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).
· 1.0″ (quarter)
A thunderstorm produced quarter size hail in Cedar Park. We received a picture of the hail stone against a ruler.
· 4.0″ (softball)
A thunderstorm produced four inch diameter hail off of CR 460 in Coupland.
· 4.0″ (softball)
A thunderstorm produced four inch diameter hail in Round Rock. This storm was part of a complex that caused 700 million dollars in hail damage in Texas. The damage in Austin, Georgetown, and Round Rock was the most impactful from this system and totaled upwards of 600 million dollars in damage across Williamson and Travis counties. Thus 300 million dollars of damage is being listed on this Williamson County entry.
Events by decade
| 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|
| 2 | 5 | 18 | 34 | 51 | 99 | 65 | 178 |
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 Williamson County
Has it ever hailed in Williamson County?
Yes — 452 hail events have been recorded for Williamson County, TX in the NOAA Storm Events Database since 1959, including 341 of 1″ (quarter size) or larger.
When did it last hail in Williamson County?
The most recent recorded hail event for Williamson County, TX is April 18, 2026, 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 Williamson County?
4.0″ (softball), recorded on May 30, 2024. 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
- Tarrant County 1,417
- Randall County 898
- Potter County 879
- Dallas County 834
- Denton County 814
- Wichita County 753
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.