Hail History

Hail history for Round Rock, Texas

NOAA hail reports in and within about 5 km (3 miles) of Round Rock since 1960, with preliminary reports to November 3, 2026.

Readout · Round Rock

Last hail
Apr 22, 2025
1.00 in, quarter size
Hail days, last 5 years
3
since Nov 3, 2021 · 31 reports
Largest ever
4.00 in
grapefruit · Sep 24, 2023

75 reports on 35 days since 1960 · #74 of 843 Texas places

Hail map · Round Rock

Round Rock Pflugerville Hutto Cedar Park Georgetown Leander Taylor Liberty Hill 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
75 most recent reports with a location; Williamson County is shaded. Open street map

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What the record says about Round Rock

The latest hail report in and around Round Rock is from April 22, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 4.00 in on September 24, 2023.

Over the 20 years 2006–2025, Round Rock logged 58 reports on 19 hail days, about 2.9 reports a year. That is 5.3 times the median Texas town on this site (0.6 a year) and ranks #74 of 843 Texas cities and towns on this site for all-time reports. Round Rock accounts for 16% of the 458 reports filed in Williamson County.

20% of reports with a size were 2 inches (hen egg) or larger, against 10% for the median Texas town on this site. The largest hail on record here is 4.00 in (grapefruit) on September 24, 2023 near 2.07 N Round Rock.

Reports were up 64% in 2016–2025 (36) compared with 2006–2015 (22). The busiest year was 2023, with 21 reports on 2 days. Hail here peaks in April (41% of reports); 59% fall between April and June.

Reports a year 2006–2025 average

  • Round Rock 2.9
  • Williamson County 15.3
  • Median Texas town on this site 0.6

Hail days 2006–2025

  • Round Rock 19
  • Williamson County 79
  • Median Texas town on this site 9

Share 2 in or larger of sized reports

  • Round Rock 20%
  • Williamson County 12%
  • Median Texas town on this site 10%

Hail over time

0102030 1960: 1 reports, largest 2.00 in 1960 1964: 1 reports, largest 1.75 in 1969: 1 reports, largest 1.50 in 1970 1971: 1 reports, largest 1.00 in 1980: 2 reports, largest 2.75 in 1980 1982: 1 reports, largest 3.00 in 1987: 1 reports, largest 1.75 in 1990: 1 reports, largest 1.00 in 1990 1992: 1 reports, largest 0.75 in 1996: 1 reports, largest 1.50 in 1997: 1 reports, largest 0.75 in 1999: 1 reports, largest 0.88 in 2000 2001: 1 reports, largest 3.50 in 2002: 1 reports, largest 1.00 in 2005: 2 reports, largest 1.00 in 2006: 3 reports, largest 1.50 in 2008: 4 reports, largest 4.00 in 2009: 4 reports, largest 2.00 in 2010 2011: 5 reports, largest 1.00 in 2012: 3 reports, largest 1.00 in 2013: 2 reports, largest 0.88 in 2014: 1 reports, largest 0.75 in 2017: 2 reports, largest 1.00 in 2018: 1 reports, largest 0.88 in 2020 2021: 2 reports, largest 2.00 in 2023: 21 reports, largest 4.00 in 2025: 10 reports, largest 2.50 in
Reports per year, 1960–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
010203040 Jan February: 1 reports (1%) Feb March: 10 reports (13%) Mar April: 31 reports (41%) Apr May: 10 reports (13%) May June: 3 reports (4%) Jun Jul Aug September: 17 reports (23%) Sep October: 2 reports (3%) Oct November: 1 reports (1%) Nov Dec
All 75 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 10 10
2024 0
2023 516 21
2022 0
2021 2 2
2020 0
2019 0
2018 1 1
2017 2 2

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Apr 22, 2025 10 2.50 in —
Sep 24, 2023 16 4.00 in —
Apr 28, 2023 5 1.50 in —

Largest hail on record

Largest hail reports in Round Rock
Date Size Location County Damage Time · source
Sep 24, 2023 4.00 ingrapefruit 2.07 N Round Rock Williamson $300.0 million 20:21 local · NCEI
May 14, 2008 4.00 ingrapefruit 2.39 NNW Round Rock Williamson — 20:35 local · NCEI
Sep 24, 2023 3.75 inteacup 1.5 NNW Round Rock Williamson — 20:27 local · NCEI
Sep 24, 2023 3.50 inteacup 2.83 NNW Round Rock Williamson — 19:57 local · NCEI
May 20, 2001 3.50 inteacup Round Rock Williamson $200K 21:10 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Round Rock
Date Size Location County Damage Time · source
Apr 22, 2025 1.00 inquarter 3.65 SSW Georgetown Williamson — 19:40 local · NCEI
Apr 22, 2025 1.00 inquarter 2.39 NNE Old Round Rock Williamson — 19:38 local · NCEI
Apr 22, 2025 1.38 inhalf dollar 3.01 SSE Georgetown Williamson — 19:30 local · NCEI
Apr 22, 2025 1.00 inquarter 4 WNW Hutto Williamson — 19:29 local · NCEI
Apr 22, 2025 1.00 inquarter 4.19 S Georgetown Williamson — 19:28 local · NCEI
Apr 22, 2025 1.00 inquarter 4.69 WNW Hutto Williamson — 19:25 local · NCEI
Apr 22, 2025 0.75 inpenny 4.19 S Georgetown Williamson — 19:22 local · NCEI
Apr 22, 2025 2.50 intennis ball 3.01 SSE Georgetown Williamson — 19:22 local · NCEI
Apr 22, 2025 0.75 inpenny 3.83 WNW Hutto Williamson — 19:21 local · NCEI
Apr 22, 2025 0.75 inpenny 4.2 NE Old Round Rock Williamson — 19:21 local · NCEI
Sep 24, 2023 3.75 inteacup 1.5 NNW Round Rock Williamson — 20:27 local · NCEI
Sep 24, 2023 4.00 ingrapefruit 2.07 N Round Rock Williamson $300.0 million 20:21 local · NCEI

Hail history near Round Rock

Questions about hail in Round Rock

How often does it hail in Round Rock, Texas?

75 hail reports have been logged in and within about 5 km (3 miles) of Round Rock since 1960. Over the 20 years 2006–2025 that averages 2.9 reports a year. That ranks #74 of 843 Texas places by number of reports.

When is hail season in Round Rock?

Most reports come in April, September, March. April alone accounts for 41% of all reports.

What is the largest hail recorded in Round Rock?

4.00 in (grapefruit size) on September 24, 2023 near 2.07 N Round Rock. 20% of reports here were 2 inches or larger.

When did it last hail in Round Rock?

The most recent report in this data is from April 22, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Round Rock had in the last five years?

3 separate days with hail reports since November 3, 2021, adding up to 31 reports. The most recent was April 22, 2025.

Where does this hail data come from?

Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.