Hail History

Hail history for Sioux City, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Sioux City since 1955, with preliminary reports to November 3, 2026.

Readout · Sioux City

Last hail
Jun 30, 2026
1.25 in, half dollar size
Hail days, last 5 years
9
since Nov 3, 2021 · 14 reports
Largest ever
2.00 in
hen egg · May 28, 2004

120 reports on 72 days since 1955 · #4 of 483 Iowa places

Hail map · Sioux City

Sioux City Sergeant Bluff Bronson Salix Moville Climbing Hill Sloan 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
120 most recent reports with a location; Woodbury County is shaded. Open street map

For homeowners

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What the record says about Sioux City

The latest hail report in and around Sioux City is from June 30, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 9 separate hail days; the biggest stones in that time were 1.25 in on June 30, 2026.

Over the 20 years 2006–2025, Sioux City logged 40 reports on 27 hail days, about 2.0 reports a year. That is 4.4 times the median Iowa town on this site (0.5 a year) and ranks #4 of 483 Iowa cities and towns on this site for all-time reports. Sioux City accounts for 31% of the 387 reports filed in Woodbury County.

3% 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 2.00 in (hen egg) on May 28, 2004 near Sioux City.

Reports were down 40% in 2016–2025 (15) compared with 2006–2015 (25). The busiest year was 2004, with 17 reports on 7 days. Hail here peaks in June (30% of reports); 67% fall between April and June.

Reports a year 2006–2025 average

  • Sioux City 2.0
  • Woodbury County 9.3
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Sioux City 27
  • Woodbury County 74
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Sioux City 3%
  • Woodbury County 4%
  • Median Iowa town on this site 6%

Hail over time

05101520 1955: 1 reports, largest 1.00 in 1960 1970 1974: 2 reports, largest 1.75 in 1975: 3 reports, largest 1.75 in 1976: 2 reports, largest 2.00 in 1978: 1 reports, largest 2.00 in 1980: 1 reports, largest 0.75 in 1980 1981: 1 reports, largest 1.00 in 1982: 2 reports, largest 1.50 in 1983: 1 reports, largest 1.50 in 1986: 7 reports, largest 1.75 in 1990 1992: 1 reports, largest 2.00 in 1996: 1 reports, largest 0.75 in 1998: 4 reports, largest 1.75 in 1999: 1 reports, largest 1.75 in 2000 2001: 9 reports, largest 1.75 in 2002: 10 reports, largest 1.75 in 2003: 8 reports, largest 1.75 in 2004: 17 reports, largest 2.00 in 2005: 2 reports, largest 1.00 in 2006: 3 reports, largest 0.88 in 2007: 2 reports, largest 1.75 in 2008: 4 reports, largest 1.00 in 2009: 2 reports, largest 0.75 in 2010 2012: 1 reports, largest 0.75 in 2013: 1 reports, largest 0.88 in 2014: 11 reports, largest 1.50 in 2015: 1 reports, largest 0.88 in 2016: 2 reports, largest 1.75 in 2017: 2 reports, largest 1.00 in 2018: 2 reports, largest 0.75 in 2019: 1 reports, largest 0.75 in 2020 2023: 5 reports, largest 1.25 in 2024: 2 reports, largest 1.25 in 2025: 1 reports, largest 0.88 in 2026: 6 reports, largest 1.25 in
Reports per year, 1955–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
010203040 Jan Feb March: 1 reports (1%) Mar April: 11 reports (9%) Apr May: 33 reports (28%) May June: 36 reports (30%) Jun July: 22 reports (18%) Jul August: 13 reports (11%) Aug September: 4 reports (3%) Sep Oct Nov Dec
All 120 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 24 6
2025 1 1
2024 11 2
2023 131 5
2022 0
2021 0
2020 0
2019 1 1
2018 2 2
2017 2 2

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jun 30, 2026 4 1.25 in —
May 31, 2026 1 1.00 in —
May 18, 2026 1 0.88 in —
Jun 28, 2025 1 0.88 in —
Jun 12, 2024 1 1.25 in —
Apr 16, 2024 1 1.00 in —
Sep 23, 2023 1 1.25 in —
May 10, 2023 3 1.00 in —
Apr 19, 2023 1 1.00 in —

Largest hail on record

Largest hail reports in Sioux City
Date Size Location County Time · source
May 28, 2004 2.00 inhen egg Sioux City Woodbury 19:55 local · NCEI
Jul 7, 1992 2.00 inhen egg — Woodbury 21:10 local · NCEI
Jun 17, 1978 2.00 inhen egg — Woodbury 04:25 local · NCEI
Jun 26, 1976 2.00 inhen egg — Woodbury 14:30 local · NCEI
May 9, 2016 1.75 ingolf ball 2.9 WNW Sioux City Woodbury 15:26 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 Sioux City
Date Size Location County Time · source
Jun 30, 2026 1.25 inhalf dollar 2.95 SSE Sioux City Woodbury 00:35 local · NCEI
Jun 30, 2026 1.00 inquarter 2.9 ESE Sioux City Woodbury 00:35 local · NCEI
Jun 30, 2026 1.00 inquarter 2.13 SSE Sioux City Woodbury 00:31 local · NCEI
Jun 30, 2026 1.00 inquarter 0.86 SE Sioux City Woodbury 00:30 local · NCEI
May 31, 2026 1.00 inquarter 2.04 W Leeds Woodbury 22:33 local · NCEI
May 18, 2026 0.88 innickel 1.02 W Leeds Woodbury 16:02 local · NCEI
Jun 28, 2025 0.88 innickel 0.69 N Leeds Woodbury 00:37 local · NCEI
Jun 12, 2024 1.25 inhalf dollar 1.47 NNW Sergeant Bluff Woodbury 17:04 local · NCEI
Apr 16, 2024 1.00 inquarter 1.23 NW Leeds Woodbury 12:50 local · NCEI
Sep 23, 2023 1.25 inhalf dollar 3.16 SSE Sioux City Woodbury 11:30 local · NCEI
May 10, 2023 1.00 inquarter 1.47 NNE Leeds Woodbury 22:54 local · NCEI
May 10, 2023 1.00 inquarter 3.35 ESE Sioux City Woodbury 22:54 local · NCEI

Hail history near Sioux City

Questions about hail in Sioux City

How often does it hail in Sioux City, Iowa?

120 hail reports have been logged in and within about 5 km (3 miles) of Sioux City since 1955. Over the 20 years 2006–2025 that averages 2.0 reports a year. That ranks #4 of 483 Iowa places by number of reports.

When is hail season in Sioux City?

Most reports come in June, May, July. June alone accounts for 30% of all reports.

What is the largest hail recorded in Sioux City?

2.00 in (hen egg size) on May 28, 2004 near Sioux City. 3% of reports here were 2 inches or larger.

When did it last hail in Sioux City?

The most recent report in this data is from June 30, 2026 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

9 separate days with hail reports since November 3, 2021, adding up to 14 reports. The most recent was June 30, 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.