Hail History

Hail history for Red Oak, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Red Oak since 1970, with preliminary reports to November 3, 2026.

Readout · Red Oak

Last hail
May 16, 2026
2.00 in, hen egg size
Hail days, last 5 years
2
since Nov 3, 2021 · 7 reports
Largest ever
3.00 in
teacup · Apr 12, 2014

38 reports on 30 days since 1970 · #46 of 483 Iowa places

Hail map · Red Oak

Red Oak Stanton Emerson Elliott Henderson Nodaway 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
38 most recent reports with a location; Montgomery County is shaded. Open street map

For homeowners

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Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Red Oak is from May 16, 2026. A local roofer can check and document it at no cost.

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What the record says about Red Oak

The latest hail report in and around Red Oak is from May 16, 2026, 2.00 in (hen egg size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 2.75 in on May 16, 2026.

Over the 20 years 2006–2025, Red Oak logged 15 reports on 11 hail days, about 0.8 reports a year. That is 67% more than the median Iowa town on this site (0.5 a year) and ranks #46 of 483 Iowa cities and towns on this site for all-time reports. Red Oak accounts for 29% of the 129 reports filed in Montgomery County.

18% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Iowa town on this site. The largest hail on record here is 3.00 in (teacup) on April 12, 2014 near Red Oak.

Reports were down 64% in 2016–2025 (4) compared with 2006–2015 (11). The busiest year was 2026, with 5 reports on 1 day. Hail here peaks in May (29% of reports); 58% fall between April and June.

Reports a year 2006–2025 average

  • Red Oak 0.8
  • Montgomery County 3.4
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Red Oak 11
  • Montgomery County 38
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Red Oak 18%
  • Montgomery County 11%
  • Median Iowa town on this site 6%

Hail over time

0246 1970: 1 reports, largest 2.00 in 1970 1971: 1 reports, largest 0.87 in 1972: 1 reports, largest 1.00 in 1974: 1 reports, largest 1.75 in 1976: 2 reports, largest 1.00 in 1980 1981: 1 reports, largest 1.50 in 1983: 1 reports, largest 1.75 in 1987: 1 reports, largest 2.75 in 1990 1992: 1 reports, largest 1.50 in 1996: 1 reports, largest 1.75 in 2000 2001: 2 reports, largest 2.50 in 2002: 1 reports, largest 0.75 in 2003: 2 reports, largest 1.25 in 2004: 1 reports, largest 1.00 in 2005: 1 reports, largest 0.75 in 2006: 1 reports, largest 0.75 in 2007: 1 reports, largest 1.00 in 2008: 2 reports, largest 0.75 in 2010 2011: 1 reports, largest 1.75 in 2012: 2 reports, largest 1.75 in 2014: 4 reports, largest 3.00 in 2020: 2 reports, largest 2.00 in 2020 2022: 2 reports, largest 1.00 in 2026: 5 reports, largest 2.75 in
Reports per year, 1970–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
051015 Jan Feb March: 4 reports (11%) Mar April: 5 reports (13%) Apr May: 11 reports (29%) May June: 6 reports (16%) Jun July: 6 reports (16%) Jul August: 1 reports (3%) Aug September: 5 reports (13%) Sep Oct Nov Dec
All 38 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 5 5
2025 0
2024 0
2023 0
2022 2 2
2021 0
2020 2 2
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 16, 2026 5 2.75 in —
Sep 17, 2022 2 1.00 in —

Largest hail on record

Largest hail reports in Red Oak
Date Size Location County Time · source
Apr 12, 2014 3.00 inteacup Red Oak Montgomery 19:14 local · NCEI
May 16, 2026 2.75 inbaseball 3.45 S Red Oak Montgomery 16:16 local · NCEI
Jun 16, 1987 2.75 inbaseball — Montgomery 17:40 local · NCEI
Sep 20, 2001 2.50 intennis ball Red Oak Montgomery 10:40 local · NCEI
May 16, 2026 2.00 inhen egg 2.95 WNW Stanton Montgomery 16:24 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 Red Oak
Date Size Location County Time · source
May 16, 2026 2.00 inhen egg 2.95 WNW Stanton Montgomery 16:24 local · NCEI
May 16, 2026 2.75 inbaseball 3.45 S Red Oak Montgomery 16:16 local · NCEI
May 16, 2026 1.75 ingolf ball 1.48 SSW Red Oak Montgomery 16:16 local · NCEI
May 16, 2026 1.00 inquarter 0.69 S Red Oak Montgomery 16:15 local · NCEI
May 16, 2026 1.00 inquarter 0.87 SE Red Oak Montgomery 16:12 local · NCEI
Sep 17, 2022 1.00 inquarter 3.13 W Stanton Montgomery 18:30 local · NCEI
Sep 17, 2022 1.00 inquarter 0.87 SE Red Oak Montgomery 18:30 local · NCEI
Mar 19, 2020 1.25 inhalf dollar Red Oak Montgomery 16:59 local · NCEI
Mar 19, 2020 2.00 inhen egg 0.87 SE Red Oak Montgomery 15:53 local · NCEI
Jul 7, 2014 0.88 innickel 0.87 SE Red Oak Montgomery 17:30 local · NCEI
May 11, 2014 1.75 ingolf ball 2.81 S Red Oak Montgomery 21:30 local · NCEI
Apr 12, 2014 1.75 ingolf ball 0.87 SE Red Oak Montgomery 19:42 local · NCEI

Hail history near Red Oak

Questions about hail in Red Oak

How often does it hail in Red Oak, Iowa?

38 hail reports have been logged in and within about 5 km (3 miles) of Red Oak since 1970. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #46 of 483 Iowa places by number of reports.

When is hail season in Red Oak?

Most reports come in May, June, July. May alone accounts for 29% of all reports.

What is the largest hail recorded in Red Oak?

3.00 in (teacup size) on April 12, 2014 near Red Oak. 18% of reports here were 2 inches or larger.

When did it last hail in Red Oak?

The most recent report in this data is from May 16, 2026 (2.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

2 separate days with hail reports since November 3, 2021, adding up to 7 reports. The most recent was May 16, 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.