Hail History

Hail history for Harmon County, Oklahoma

Every NOAA hail report filed in Harmon County since 1960, with preliminary National Weather Service reports to November 3, 2026.

Readout · Harmon County

Last hail
Aug 25, 2026
3.00 in, teacup size · preliminary
Hail days, last 5 years
6
since Nov 3, 2021 · 13 reports
Largest ever
4.25 in
grapefruit · May 9, 2006

287 reports on 162 days since 1960 · #54 of 78 Oklahoma counties

Hail map · Harmon County

Hollis Gould 25 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
259 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

Concerned about your roof after hail?

Send a request to Moxisync Labs for review. The latest hail report in Harmon County is from August 25, 2026. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.

Phone line opening soon

What would a claim cost you? Try the hail claim calculator

Roofer? Get hail alerts for your area with StormScope

What the record says about Harmon County

The latest hail report in Harmon County is from August 25, 2026, 3.00 in (teacup size). Since November 3, 2021 there have been 6 separate hail days; the biggest stones in that time were 3.00 in on August 25, 2026.

Over the 20 years 2006–2025, Harmon County logged 103 reports on 47 hail days, about 5.2 reports a year. That is 16% less than the median Oklahoma county (6.1 a year) and ranks #54 of 78 Oklahoma counties for all-time reports. Harmon County holds 1% of all 31,598 hail reports in Oklahoma.

13% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median Oklahoma county. The largest hail on record here is 4.25 in (grapefruit) on May 9, 2006 near Madge.

Reports were down 66% in 2016–2025 (26) compared with 2006–2015 (77). The busiest year was 2006, with 19 reports on 5 days. Hail here peaks in May (41% of reports); 79% fall between April and June.

Reports a year 2006–2025 average

  • Harmon County 5.2
  • Median Oklahoma county 6.1

Hail days 2006–2025

  • Harmon County 47
  • Median Oklahoma county 67

Share 2 in or larger of sized reports

  • Harmon County 13%
  • Median Oklahoma county 8%

Hail over time

05101520 1960: 2 reports, largest 1.75 in 1960 1962: 4 reports, largest 3.00 in 1963: 3 reports, largest 1.50 in 1967: 2 reports, largest 3.00 in 1968: 1 reports, largest 1.75 in 1969: 1 reports, largest 1.75 in 1970 1974: 2 reports, largest 1.75 in 1976: 3 reports, largest 2.75 in 1977: 1 reports, largest 2.50 in 1978: 1 reports, largest 1.75 in 1980: 1 reports, largest 2.00 in 1980 1982: 3 reports, largest 1.75 in 1983: 9 reports, largest 1.75 in 1984: 2 reports, largest 1.75 in 1985: 11 reports, largest 2.00 in 1986: 14 reports, largest 2.00 in 1987: 2 reports, largest 1.75 in 1989: 6 reports, largest 1.75 in 1990: 3 reports, largest 1.00 in 1990 1991: 2 reports, largest 0.88 in 1992: 7 reports, largest 1.75 in 1993: 9 reports, largest 2.75 in 1994: 7 reports, largest 1.75 in 1995: 12 reports, largest 2.75 in 1996: 10 reports, largest 1.75 in 1997: 9 reports, largest 2.25 in 1998: 3 reports, largest 1.25 in 1999: 6 reports, largest 1.25 in 2000: 4 reports, largest 1.00 in 2000 2001: 4 reports, largest 1.00 in 2002: 7 reports, largest 1.00 in 2003: 5 reports, largest 1.50 in 2004: 7 reports, largest 1.75 in 2005: 18 reports, largest 1.50 in 2006: 19 reports, largest 4.25 in 2007: 12 reports, largest 1.75 in 2008: 4 reports, largest 2.50 in 2009: 3 reports, largest 1.75 in 2010: 1 reports, largest 1.75 in 2010 2011: 3 reports, largest 1.75 in 2012: 18 reports, largest 2.50 in 2013: 4 reports, largest 2.75 in 2014: 5 reports, largest 1.75 in 2015: 8 reports, largest 1.75 in 2016: 4 reports, largest 2.75 in 2017: 3 reports, largest 2.50 in 2018: 2 reports, largest 1.00 in 2019: 6 reports, largest 3.20 in 2020: 1 reports, largest 3.00 in 2020 2022: 1 reports, largest 1.75 in 2023: 1 reports, largest 1.25 in 2024: 8 reports, largest 2.75 in 2026: 3 reports, largest 3.00 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.
050100150 January: 1 reports (0%) Jan February: 2 reports (1%) Feb March: 27 reports (9%) Mar April: 73 reports (25%) Apr May: 119 reports (41%) May June: 34 reports (12%) Jun July: 10 reports (3%) Jul August: 5 reports (2%) Aug September: 4 reports (1%) Sep October: 7 reports (2%) Oct November: 4 reports (1%) Nov December: 1 reports (0%) Dec
All 287 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 21 3
2025 0
2024 17 8
2023 1 1
2022 1 1
2021 0
2020 1 1
2019 6 6
2018 2 2
2017 21 3

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Aug 25, 2026 1 3.00 in View
Jun 23, 2026 2 1.00 in —
May 23, 2024 7 2.75 in —
Feb 2, 2024 1 1.25 in —
Jun 15, 2023 1 1.25 in —
May 4, 2022 1 1.75 in —

Largest hail on record

Largest hail reports in Harmon County
Date Size Location Time · source
May 9, 2006 4.25 ingrapefruit Madge 20:30 local · NCEI
Apr 3, 2019 3.20 inteacup 2.07 S Gould 18:15 local · NCEI
Aug 25, 2026 3.00 inteacup Gould 22:29 UTC · NWS prelim.
May 7, 2020 3.00 inteacup 4.85 SW Hollis 17:03 local · NCEI
May 5, 1967 3.00 inteacup — 20:20 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 Harmon County
Date Size Location Time · source
Aug 25, 2026 3.00 inteacup Gould 22:29 UTC · NWS prelim.
Jun 23, 2026 0.75 inpenny 4.67 N Mc Knight 11:50 local · NCEI
Jun 23, 2026 1.00 inquarter 2.99 ESE Madge 10:55 local · NCEI
May 23, 2024 1.25 inhalf dollar 4.8 S Mc Queen 17:22 local · NCEI
May 23, 2024 1.75 ingolf ball 1 S Gould 17:20 local · NCEI
May 23, 2024 2.75 inbaseball 2.1 S Mc Knight 17:00 local · NCEI
May 23, 2024 2.50 intennis ball Hollis 16:57 local · NCEI
May 23, 2024 2.52 intennis ball Mc Knight 16:40 local · NCEI
May 23, 2024 1.75 ingolf ball 2.65 N Hollis 16:37 local · NCEI
May 23, 2024 1.00 inquarter 2.57 E Madge 16:28 local · NCEI
Feb 2, 2024 1.25 inhalf dollar 0.07 NNE Vinson 18:57 local · NCEI
Jun 15, 2023 1.25 inhalf dollar 0.57 E Hollis 17:35 local · NCEI

Cities and towns in Harmon County

PlaceReportsLargest
Hollis653.00 in
Gould263.20 in

Questions about hail in Harmon County

How often does it hail in Harmon County, Oklahoma?

287 hail reports have been logged in Harmon County since 1960. Over the 20 years 2006–2025 that averages 5.2 reports a year. That ranks #54 of 78 Oklahoma counties by number of reports.

When is hail season in Harmon County?

Most reports come in May, April, June. May alone accounts for 41% of all reports.

What is the largest hail recorded in Harmon County?

4.25 in (grapefruit size) on May 9, 2006 near Madge. 13% of reports here were 2 inches or larger.

When did it last hail in Harmon County?

The most recent report in this data is from August 25, 2026 (3.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

6 separate days with hail reports since November 3, 2021, adding up to 13 reports. The most recent was August 25, 2026.

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.