Hail history for 78664 · Round Rock, TX
In the last three years radar flagged hail over this ZIP on 5 days, 2 of them with stones estimated at one inch or larger, the size where roof damage becomes likely. The largest estimate was 2.25" (hen egg size) on April 22, 2025.
| Date | Largest hail (radar est.) | Radar signatures | Ground reports |
|---|---|---|---|
| May 19, 2026 | 1" (quarter size) | 1 | — |
| May 10, 2026 | 0.75" (penny size) | 1 | — |
| April 22, 2025 | 2.25" (hen egg size) | 2 | — |
| April 8, 2024 | 0.75" (penny size) | 1 | — |
| March 15, 2024 | 0.75" (penny size) | 1 | — |
Radar sizes describe the storm over the ZIP, not any one roof. If a date above worries you, a local roofer can inspect for free, and your policy sets the deadline for reporting storm damage.
Free. Or see the storms open now, with every home inside the radar footprint.
Radar sizes are estimates from NEXRAD hail signatures (NOAA Severe Weather Data Inventory) for the largest stones in a storm cell, not a measurement at any one home. Ground reports are National Weather Service local storm reports and the NOAA Storm Events Database, as filed. Town-level data only; this page shows no addresses and no homeowner information.