Round Rock and Central Texas Hail History, 2015 to 2025
Every spring, homeowners across Round Rock, Austin, and the Hill Country ask the same question after a storm: was that hail big enough to damage my roof? To answer it with facts instead of guesses, we pulled every hail report logged by the National Weather Service for Williamson, Travis, and Hays Counties in the NOAA Storm Events Database, 2015 through 2025. Here is what the record shows.
433hail reports across Williamson, Travis, and Hays since 2015
79%were 1 inch (quarter size) or larger, where shingle damage begins
63%of all reports fall in April and May
4.0 inlargest stone on record, softball size, in 2023 and 2024
The headline numbers
- 2023 was the worst year on record for the area: 112 reports, 101 at an inch or bigger, and stones up to 4 inches. 2024 and 2025 both stayed far above the pre-2020 baseline.
- By county: Williamson 203, Travis 162, Hays 68. Williamson County, home to Round Rock, Georgetown, Cedar Park, Leander, and Hutto, is consistently the most active.
- Storm season is short and predictable. 63% of reports land in April and May, with a smaller second window in September.
Hail reports by year
| Year | Hail reports | 1 inch or larger | Largest stone |
|---|
| 2015 | 15 | 8 | 2.00 in (hen egg) |
| 2016 | 10 | 5 | 1.75 in (golf ball) |
| 2017 | 31 | 20 | 1.75 in (golf ball) |
| 2018 | 9 | 3 | 1.25 in (half dollar) |
| 2019 | 18 | 12 | 2.00 in (hen egg) |
| 2020 | 27 | 19 | 2.75 in (baseball) |
| 2021 | 40 | 32 | 2.50 in (tennis ball) |
| 2022 | 15 | 9 | 1.75 in (golf ball) |
| 2023 | 112 | 101 | 4.00 in (softball) |
| 2024 | 59 | 57 | 4.00 in (softball) |
| 2025 | 97 | 78 | 3.00 in (tennis ball) |
Source: NOAA National Centers for Environmental Information, Storm Events Database, hail events for Williamson, Travis, and Hays Counties, Texas. Counts are individual spotter and station reports, so a single storm can generate several entries.
The biggest hail stones since 2015
| Date | Location | County | Size |
|---|
| 30-MAY-24 | Coupland | Williamson | 4.00 in (softball) |
| 24-SEP-23 | Round Rock | Williamson | 4.00 in (softball) |
| 24-SEP-23 | Round Rock | Williamson | 3.75 in |
| 24-SEP-23 | Round Rock | Williamson | 3.50 in |
| 24-SEP-23 | Round Rock | Williamson | 3.50 in |
| 16-MAY-25 | Leander | Williamson | 3.00 in (tennis ball) |
| 09-MAY-24 | Mt Gaynor | Hays | 3.00 in (tennis ball) |
| 09-MAY-24 | San Marcos Lowman Ar | Hays | 3.00 in (tennis ball) |
| 24-SEP-23 | Old Round Rock | Williamson | 3.00 in (tennis ball) |
| 24-SEP-23 | Round Rock | Williamson | 3.00 in (tennis ball) |
When hail hits Central Texas
Reports by month: April 148, May 124, September 63, March 55, June 26, December 5, January 4, October 4, February 2, November 1, July 1. The pattern is a sharp spring peak with a smaller second window in September, which is why we tell homeowners to get a baseline inspection in March and again after Labor Day.
What this means for your roof
A one-inch stone is the line that matters. Quarter-size hail bruises asphalt shingles, knocks granules loose, and exposes the mat underneath, and the damage is almost never visible from the driveway. Our guide to what hail damage actually looks like walks through the five-minute ground check you can do safely.
The clock starts the day of the storm. Texas policies carry deadlines for storm claims, and adjusters weigh whether damage matches a documented event. Our Texas roof insurance guide covers the process, and our storm and hail damage guide covers the first 48 hours.
Roof age multiplies the risk. A 15-year-old roof takes a 2023-style storm far worse than a new one. If yours is original to a 2000s-era home in Round Rock, Pflugerville, or Cedar Park, it has now lived through the three most active hail years in the record.
Not sure where your roof stands? We are headquartered on Sam Bass Road in Round Rock and answer 24/7 at (512) 388-7663.
Use this data
Journalists, insurance professionals, and researchers are welcome to cite these figures with attribution to KangaRoof and NOAA. We update this page each season.
