Hail History

Hail history for Mason, Ohio

NOAA hail reports in and within about 5 km (3 miles) of Mason since 1974, with preliminary reports to November 3, 2026.

Readout · Mason

Last hail
Jul 18, 2023
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
2.75 in
baseball · Apr 3, 1974

37 reports on 22 days since 1974 · #21 of 246 Ohio places

Hail map · Mason

Mason Lebanon Olde West Chester Monroe Sharonville Middletown Springboro 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
37 most recent reports with a location; Warren County is shaded. Open street map

For homeowners

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What the record says about Mason

The latest hail report in and around Mason is from July 18, 2023, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on July 18, 2023.

Over the 20 years 2006–2025, Mason logged 30 reports on 15 hail days, about 1.5 reports a year. That is 3.3 times the median Ohio town on this site (0.5 a year) and ranks #21 of 246 Ohio cities and towns on this site for all-time reports. Mason accounts for 29% of the 128 reports filed in Warren County.

8% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median Ohio town on this site. The largest hail on record here is 2.75 in (baseball) on April 3, 1974.

Reports were down 33% in 2016–2025 (12) compared with 2006–2015 (18). The busiest year was 2020, with 8 reports on 2 days. Hail here peaks in April (43% of reports); 62% fall between April and June.

Reports a year 2006–2025 average

  • Mason 1.5
  • Warren County 4.5
  • Median Ohio town on this site 0.5

Hail days 2006–2025

  • Mason 15
  • Warren County 51
  • Median Ohio town on this site 8

Share 2 in or larger of sized reports

  • Mason 8%
  • Warren County 4%
  • Median Ohio town on this site 0%

Hail over time

02468 1974: 1 reports, largest 2.75 in 1980 1990 1996: 2 reports, largest 0.88 in 1997: 1 reports, largest 0.75 in 2000: 1 reports, largest 0.75 in 2000 2002: 2 reports, largest 1.00 in 2006: 1 reports, largest 0.88 in 2007: 1 reports, largest 0.88 in 2009: 3 reports, largest 1.00 in 2010: 1 reports, largest 0.75 in 2010 2011: 3 reports, largest 1.00 in 2012: 1 reports, largest 0.88 in 2013: 7 reports, largest 2.00 in 2015: 1 reports, largest 1.00 in 2016: 1 reports, largest 0.88 in 2018: 2 reports, largest 0.75 in 2020: 8 reports, largest 2.00 in 2020 2023: 1 reports, largest 1.00 in
Reports per year, 1974–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
05101520 Jan February: 1 reports (3%) Feb March: 3 reports (8%) Mar April: 16 reports (43%) Apr May: 5 reports (14%) May June: 2 reports (5%) Jun July: 3 reports (8%) Jul August: 6 reports (16%) Aug Sep October: 1 reports (3%) Oct Nov Dec
All 37 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 1 1
2022 0
2021 0
2020 71 8
2019 0
2018 2 2
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jul 18, 2023 1 1.00 in —

Largest hail on record

Largest hail reports in Mason
Date Size Location County Time · source
Apr 3, 1974 2.75 inbaseball — Warren 15:45 local · NCEI
Apr 8, 2020 2.00 inhen egg 2.12 SE Socialville Warren 21:31 local · NCEI
Apr 16, 2013 2.00 inhen egg 0.53 E Fosters Warren 16:29 local · NCEI
Apr 8, 2020 1.50 inping pong ball 0.87 SE Mason Warren 21:07 local · NCEI
Apr 16, 2013 1.25 inhalf dollar Maineville Warren 16:30 local · NCEI

Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.

Size of every report

Most recent reports

Most recent hail reports in Mason
Date Size Location County Time · source
Jul 18, 2023 1.00 inquarter 1.48 SSW Mason Warren 16:25 local · NCEI
Aug 25, 2020 0.75 inpenny 1.27 ESE Maud Butler 15:55 local · NCEI
Apr 8, 2020 0.88 innickel 0.69 S Fosters Warren 21:33 local · NCEI
Apr 8, 2020 2.00 inhen egg 2.12 SE Socialville Warren 21:31 local · NCEI
Apr 8, 2020 0.75 inpenny 1.32 ESE Maud Butler 21:27 local · NCEI
Apr 8, 2020 1.00 inquarter 0.87 SE Mason Warren 21:11 local · NCEI
Apr 8, 2020 0.88 innickel 0.87 SE Mason Warren 21:10 local · NCEI
Apr 8, 2020 1.00 inquarter 0.87 SE Mason Warren 21:09 local · NCEI
Apr 8, 2020 1.50 inping pong ball 0.87 SE Mason Warren 21:07 local · NCEI
Aug 11, 2018 0.75 inpenny 1.27 ESE Maud Butler 13:45 local · NCEI
Aug 11, 2018 0.75 inpenny 1.34 ESE Maud Butler 13:43 local · NCEI
May 1, 2016 0.88 innickel 0.87 SE Kings Mills Warren 18:10 local · NCEI

Hail history near Mason

Questions about hail in Mason

How often does it hail in Mason, Ohio?

37 hail reports have been logged in and within about 5 km (3 miles) of Mason since 1974. Over the 20 years 2006–2025 that averages 1.5 reports a year. That ranks #21 of 246 Ohio places by number of reports.

When is hail season in Mason?

Most reports come in April, August, May. April alone accounts for 43% of all reports.

What is the largest hail recorded in Mason?

2.75 in (baseball size) on April 3, 1974. 8% of reports here were 2 inches or larger.

When did it last hail in Mason?

The most recent report in this data is from July 18, 2023 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was July 18, 2023.

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.