Hail history in Round Rock, TX
On average, NOAA recorded hail within 15 miles of the center of Round Rock on 4.3 days a year from 2016 to 2025, 3.0 of them with hail 1 inch or larger. NOAA recorded hail within 15 miles of the center of Round Rock on 61 days since 2010. The largest hail reported was 4.0 in, in 2023. 41 of those days had hail of 1 inch or larger. April has the most hail days, 19 since 2010. The most recent was May 9, 2026. NOAA also recorded high wind on 49 days, with gusts up to 81 mph.
- Hail days since 2010
- 61
- Largest hail
- 4.0 in
- Highest gust
- 81 mph
Source: NOAA/NWS Storm Prediction Center
Data through November 2, 2026
61 hail days within 15 miles since 2010, largest 4.0 in
Source: NOAA/NWS Storm Prediction Center
Data through November 2, 2026
Hail days by year
Bar chart of hail days per year, 2010 to 2026. 61 hail days in total; the most was 8 in 2017.
Hail days by month
Hail days by month since 2010: Jan 2, Feb 1, Mar 9, Apr 19, May 18, Jun 5, Jul 2, Aug 0, Sep 1, Oct 1, Nov 1, Dec 2.
Most recent hail days
| Date | Largest hail | Nearest report |
|---|---|---|
| May 9, 2026 | 1.0 in | 9.6 mi |
| Apr 18, 2026 | 1.0 in | 5.9 mi |
| May 28, 2025 | 2.0 in | 8.9 mi |
| May 16, 2025 | 3.0 in | 9.6 mi |
| May 5, 2025 | 0.75 in | 14.1 mi |
| Apr 30, 2025 | 2.5 in | 6.4 mi |
| Apr 22, 2025 | 2.5 in | 0.8 mi |
| Mar 23, 2025 | 0.88 in | 5.9 mi |
| Mar 14, 2025 | 0.75 in | 6.8 mi |
| May 30, 2024 | 2.0 in | 7.4 mi |
About this data
- Distances are from the center of Round Rock, not from any one property. Look up a street address below for a single building.
- Reports come from trained spotters and the public, so they cluster near towns and roads.
- No report does not mean no hail. Hail can fall where no one is there to report it.
- This is not a damage or insurance assessment.
49 high-wind days within 15 miles since 2010, strongest gust 81 mph
Source: NOAA/NWS Storm Prediction Center
Data through November 2, 2026
Most recent high-wind days
| Date | Highest gust | Nearest report |
|---|---|---|
| May 19, 2026 | 74 mph | 3.7 mi |
| May 10, 2026 | 64 mph | 6.1 mi |
| May 28, 2025 | 75 mph | 9.8 mi |
| May 16, 2024 | 70 mph | 7.4 mi |
| Sep 24, 2023 | 70 mph | 2.9 mi |
| Sep 13, 2023 | 75 mph | 10.5 mi |
| May 5, 2023 | 60 mph | 4.4 mi |
| Mar 2, 2023 | 59 mph | 10.6 mi |
| Oct 24, 2022 | 60 mph | 4.1 mi |
| May 24, 2022 | 64 mph | 4.4 mi |
About this data
- Distances are from the center of Round Rock, not from any one property. Look up a street address below for a single building.
- Reports come from trained spotters and the public, so they cluster near towns and roads.
- No report does not mean no hail. Hail can fall where no one is there to report it.
- Wind speed is the highest reported gust; some reports have no speed.
- This is not a damage or insurance assessment.
Gusts, tornadoes and hurricanes in Round Rock
Estimated peak gusts
1 day since October 1, 2021 had an estimated peak gust of 58 mph or more at Round Rock.
| Day | Estimated peak gust |
|---|---|
| Jan 8, 2024 | 50 mph or more |
| Mar 21, 2022 | 58 mph or more |
Estimates: the highest gust of each storm day in NOAA’s hourly 2.5 km wind analysis (URMA), which fills in between weather stations. Analyses like this smooth out short thunderstorm gusts, so they are best for widespread wind (hurricanes, winter storms, high wind days); for thunderstorm wind, NOAA’s wind reports are the better record. Not a measurement at any building.
Tornadoes within 10 miles
NOAA recorded 30 tornadoes whose path came within 10 miles of Round Rock since 1950; the strongest was rated EF3.
| Day | Rating | Path length | Closest |
|---|---|---|---|
| Mar 21, 2022 | EF2 | 34.62 miles | 1.8 miles |
| Jul 4, 2018 | EF0 | 0.7 miles | 4.3 miles |
| Jul 15, 2017 | EF0 | 0.1 miles | 3.4 miles |
| May 25, 2015 | EF1 | 0.33 miles | 8.7 miles |
| Apr 26, 2009 | EF1 | 2.11 miles | 8.2 miles |
| Nov 23, 2004 | EF0 | 0.3 miles | 9.4 miles |
| Nov 23, 2004 | EF0 | 0.1 miles | 3.4 miles |
| Nov 15, 2001 | EF0 | 0.3 miles | 6.3 miles |
Show all 30Show fewer
| Day | Rating | Path length | Closest |
|---|---|---|---|
| Mar 16, 2000 | EF0 | 0.1 miles | 7.1 miles |
| Mar 16, 2000 | EF0 | 0.1 miles | 6 miles |
| Jul 4, 1998 | EF1 | 0.2 miles | 4.2 miles |
| May 27, 1997 | EF3 | 9.2 miles | 9.5 miles |
| May 13, 1994 | EF0 | 0.2 miles | 7.2 miles |
| May 18, 1990 | EF0 | 0.2 miles | 7.4 miles |
| Dec 10, 1985 | EF2 | 5 miles | 3.7 miles |
| Dec 10, 1985 | EF1 | 23 miles | 3 miles |
| May 18, 1983 | EF1 | 13 miles | 3.9 miles |
| Apr 20, 1982 | EF1 | 0.1 miles | 8.1 miles |
| Feb 9, 1981 | EF2 | 0.8 miles | 9.9 miles |
| Apr 7, 1980 | EF3 | 31.7 miles | 1.2 miles |
| Feb 29, 1980 | EF1 | 11 miles | 8 miles |
| May 9, 1974 | EF1 | 7.9 miles | 9 miles |
| Oct 21, 1972 | EF1 | 0.3 miles | 7.2 miles |
| May 18, 1965 | EF0 | 1 miles | 9.2 miles |
| Apr 26, 1964 | EF2 | 1 miles | 2.7 miles |
| Jun 29, 1961 | EF1 | 0.2 miles | 8.6 miles |
| May 10, 1959 | EF3 | 11 miles | 7.8 miles |
| Mar 31, 1957 | EF1 | 0.1 miles | 6.2 miles |
| Mar 31, 1957 | EF2 | 0.1 miles | 2.7 miles |
| Sep 4, 1956 | EF2 | 56.6 miles | 6.3 miles |
Source: NOAA/NWS Storm Prediction Center. Ratings before 2007 are on the original Fujita scale.
Hurricanes and tropical storms
3 storms in NOAA's records brought modeled tropical-storm-force winds (39 mph or more) to Round Rock.
| Storm | Modeled peak gust | Sustained | Closest pass |
|---|---|---|---|
| Carla (1961) | 60 mph | 48 mph | 4 miles |
| 1900 Galveston hurricane | 55 mph | 45 mph | 56 miles |
| 1886 Indianola hurricane | 55 mph | 45 mph | 84 miles |
Modeled from NOAA’s best tracks for open, flat ground; not measurements. How we model hurricane winds
69 radar hail days within 15 miles since 2020, largest 4.0 in or more
Source: NOAA MRMS radar (MESH), from October 14, 2020. Estimates of the largest hail in each 1 km cell, not measurements.
39 days with radar hail 1 inch or larger, 11 at 2 inches or larger, within 15 miles of Round Rock’s center.
Biggest radar hail days
- 0.75 in+
- 1.0 in+
- 1.5 in+
- 2.0 in+
- 2.5 in+
- 3.0 in+
Most recent radar hail days
| Date | Largest radar estimate |
|---|---|
| Sep 11, 2026 | 0.75 in or more |
| Aug 28, 2026 | 1.5 in or more |
| Aug 27, 2026 | 0.75 in or more |
| May 26, 2026 | 1.5 in or more |
| May 25, 2026 | 0.75 in or more |
| May 21, 2026 | 1.25 in or more |
Round Rock and other Texas cities
Source: NOAA/NWS Storm Prediction Center
Data through November 2, 2026
Days a year with hail 1 inch or larger within 15 miles of each city's center, 2016 to 2025, and each city's rank among 200 US cities.
| City | Days a year | US rank |
|---|---|---|
| Amarillo | 6.2 | #3 |
| Lubbock | 4.8 | #6 |
| Dallas | 4.7 | #9 |
| San Antonio | 3.7 | #16 |
| Round Rock | 3.0 | Not ranked |
| Tyler | 2.9 | #24 |
| Waco | 2.5 | #34 |
| Killeen | 2.3 | #40 |
| Austin | 2.2 | #46 |
| Longview | 2.0 | #51 |
| Houston | 1.7 | #65 |
| Beaumont | 1.4 | #77 |
| College Station | 1.3 | #85 |
| McAllen | 1.2 | #93 |
| El Paso | 1.2 | #93 |
| Laredo | 1.1 | #99 |
| Brownsville | 0.4 | #152 |
| Corpus Christi | 0.3 | #157 |
About this data
- Each city counts reports within 15 miles of its center, not of any one property.
- The US rank covers the 200 largest metro areas, measured from each one's main city. Round Rock is not one of them, so it has no rank.
- Reports come from trained spotters and the public, so they cluster near towns and roads.
- No report does not mean no hail. Hail can fall where no one is there to report it.
- This is not a damage or insurance assessment.
Storms in Round Rock
The City of Round Rock puts Central Texas's severe thunderstorm and tornado season at March through June.1 In the Austin/San Antonio radar area, the Storm Prediction Center counts an average of 31 days a year with large hail reports and 32 with damaging wind reports (1980 to 2006), with reports peaking around May 10.2
Notable storms
- September 24, 2023A storm dropped 4-inch hail in Round Rock. NOAA's storm records list upwards of $600 million in damage across Williamson and Travis counties, with Austin, Georgetown and Round Rock hit hardest.3
- March 21, 2022A tornado touched down just southwest of the I-35 and TX 45 interchange and tracked about 29 miles northeast toward Granger, damaging roofs and windows of businesses along I-35 and briefly reaching EF2 strength in the Windy Terrace and Greenlawn Place neighborhoods, where several homes lost their roofs. NOAA's storm records put its peak winds at 135 mph and list 16 injuries, most of them minor.4,5
- April 15, 2021Afternoon storms dropped golf ball size hail at O'Connor Drive and FM 620 and 2-inch hail elsewhere in Round Rock, and tennis ball size hail fell in Pflugerville.6,7,8
- May 27, 2020Shortly before midnight, a storm dropped hail up to baseball size on the northwest side of Georgetown, along Williams Drive from Sun City toward I-35, breaking roof shingles and car windows. NOAA's storm records note that NCEI counted that day's storms in the Hill Country, Georgetown and San Antonio as a billion-dollar event.9,10
- May 14, 2008Storms dropped 4-inch hail about 2 miles north-northwest of Round Rock, while straight-line winds estimated at 70 to 80 mph struck the Lookout at Brushy Creek subdivision.11,12
- May 20, 2001A thunderstorm complex dropped 3.5-inch hail in Round Rock, damaged roofs and blew down power lines between Round Rock and Pflugerville, and produced a 72 mph gust measured in Pflugerville.13,14
Warnings and alerts
Warnings for Round Rock come from NWS Austin/San Antonio, which serves Williamson and Travis counties among 33 Texas counties.15 Round Rock residents can sign up for Warn Central Texas, a regional notification system that sends alerts by text, phone call or email for home and work locations they register.1
Sources
- 1. City of Round Rock: What to know about watches and warnings during storm season in Round Rock
- 2. NOAA Storm Prediction Center: EWX Severe Weather Climatology
- 3. NOAA NCEI Storm Events Database: Hail, Williamson County, September 24, 2023
- 4. NWS Austin/San Antonio: March 21st, 2022 south central Texas tornado event
- 5. NOAA NCEI Storm Events Database: Tornado, Williamson County, March 21, 2022
- 6. NOAA NCEI Storm Events Database: Hail, Williamson County, April 15, 2021
- 7. NOAA NCEI Storm Events Database: Hail, Williamson County, April 15, 2021
- 8. NOAA NCEI Storm Events Database: Hail, Travis County, April 15, 2021
- 9. NOAA NCEI Storm Events Database: Hail, Williamson County, May 27, 2020
- 10. FOX 7 Austin: Hail storm in Georgetown damages homes, vehicles
- 11. NOAA NCEI Storm Events Database: Hail, Williamson County, May 14, 2008
- 12. NOAA NCEI Storm Events Database: Thunderstorm Wind, Williamson County, May 14, 2008
- 13. NOAA NCEI Storm Events Database: Hail, Williamson County, May 20, 2001
- 14. NOAA NCEI Storm Events Database: Thunderstorm Wind, Travis County, May 20, 2001
- 15. NWS Austin/San Antonio: About Us
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Questions about hail in Round Rock
Source: NOAA/NWS Storm Prediction Center
Data through November 2, 2026
- How often does it hail in Round Rock?
- NOAA recorded hail within 15 miles of the center of Round Rock on 4.3 days a year on average from 2016 to 2025, 3.0 of them with hail 1 inch or larger. Since 2010 it recorded 61 hail days.
- When is hail season in Round Rock?
- April has the most hail days within 15 miles of the center of Round Rock, 19 since 2010, then May (18) and March (9).
- What is the largest hail recorded in Round Rock?
- 4.0 in, in 2023: the largest hail NOAA recorded within 15 miles of the center of Round Rock since 2010.
- When did it last hail in Round Rock?
- NOAA's most recent hail report within 15 miles of the center of Round Rock is from May 9, 2026, with hail up to 1.0 in reported 9.6 miles from the center. Data through November 2, 2026.