Hail History

Hail history for May, Oklahoma

NOAA hail reports in and within about 5 km (3 miles) of May since 1985, with preliminary reports to November 3, 2026.

Readout · May

Last hail
May 12, 2022
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
3.00 in
teacup · Apr 21, 2004

20 reports on 19 days since 1985 · #346 of 584 Oklahoma places

Hail map · May

May Laverne Fort Supply Buffalo Rosston Selman 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
20 most recent reports with a location; Harper County is shaded. Open street map

For homeowners

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What the record says about May

The latest hail report in and around May is from May 12, 2022, 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 May 12, 2022.

Over the 20 years 2006–2025, May logged 6 reports on 6 hail days, about 0.3 reports a year. That is 33% less than the median Oklahoma town on this site (0.5 a year) and ranks #346 of 584 Oklahoma cities and towns on this site for all-time reports. May accounts for 5% of the 368 reports filed in Harper County.

10% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Oklahoma town on this site. The largest hail on record here is 3.00 in (teacup) on April 21, 2004 near Yukon.

The busiest year was 1992, with 3 reports on 3 days. Hail here peaks in May (40% of reports); 80% fall between April and June.

Reports a year 2006–2025 average

  • May 0.3
  • Harper County 5.7
  • Median Oklahoma town on this site 0.5

Hail days 2006–2025

  • May 6
  • Harper County 53
  • Median Oklahoma town on this site 8

Share 2 in or larger of sized reports

  • May 10%
  • Harper County 12%
  • Median Oklahoma town on this site 8%

Hail over time

0123 1985: 1 reports, largest 0.75 in 1987: 1 reports, largest 1.50 in 1988: 1 reports, largest 0.75 in 1989: 1 reports, largest 0.88 in 1990: 1 reports, largest 1.00 in 1990 1992: 3 reports, largest 2.00 in 1996: 2 reports, largest 0.88 in 1997: 2 reports, largest 0.88 in 2000 2004: 2 reports, largest 3.00 in 2007: 1 reports, largest 1.00 in 2008: 1 reports, largest 1.00 in 2009: 1 reports, largest 0.88 in 2010 2012: 1 reports, largest 1.25 in 2014: 1 reports, largest 1.00 in 2020 2022: 1 reports, largest 1.00 in
Reports per year, 1985–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb March: 2 reports (10%) Mar April: 6 reports (30%) Apr May: 8 reports (40%) May June: 2 reports (10%) Jun Jul Aug September: 2 reports (10%) Sep Oct Nov Dec
All 20 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 1 1
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 12, 2022 1 1.00 in —

Largest hail on record

Largest hail reports in May
Date Size Location County Time · source
Apr 21, 2004 3.00 inteacup Yukon Canadian 15:09 local · NCEI
Jun 18, 1992 2.00 inhen egg — Harper 18:15 local · NCEI
May 22, 1992 1.75 ingolf ball — Harper 14:25 local · NCEI
Mar 22, 1987 1.50 inping pong ball — Ellis 18:30 local · NCEI
Apr 29, 2012 1.25 inhalf dollar May Harper 21:22 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 May
Date Size Location County Time · source
May 12, 2022 1.00 inquarter May Harper 20:44 local · NCEI
May 11, 2014 1.00 inquarter 1.11 E May Harper 20:20 local · NCEI
Apr 29, 2012 1.25 inhalf dollar May Harper 21:22 local · NCEI
May 15, 2009 0.88 innickel 3 N May Harper 15:15 local · NCEI
May 22, 2008 1.00 inquarter May Harper 20:36 local · NCEI
Jun 13, 2007 1.00 inquarter May Harper 16:13 local · NCEI
Apr 21, 2004 0.88 innickel 9 E Chickasha Grady 15:19 local · NCEI
Apr 21, 2004 3.00 inteacup Yukon Canadian 15:09 local · NCEI
May 29, 1997 0.75 inpenny 17 N Gage Ellis 18:50 local · NCEI
May 1, 1997 0.88 innickel May Harper 19:35 local · NCEI
Sep 25, 1996 0.75 inpenny 1 E May Harper 18:56 local · NCEI
Apr 13, 1996 0.88 innickel 2 E May Harper 20:15 local · NCEI

Hail history near May

Questions about hail in May

How often does it hail in May, Oklahoma?

20 hail reports have been logged in and within about 5 km (3 miles) of May since 1985. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #346 of 584 Oklahoma places by number of reports.

When is hail season in May?

Most reports come in May, April, March. May alone accounts for 40% of all reports.

What is the largest hail recorded in May?

3.00 in (teacup size) on April 21, 2004 near Yukon. 10% of reports here were 2 inches or larger.

When did it last hail in May?

The most recent report in this data is from May 12, 2022 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has May 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 May 12, 2022.

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.