Hail History

Hail history for Iroquois, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Iroquois since 1968, with preliminary reports to November 3, 2026.

Readout · Iroquois

Last hail
Jul 17, 2017
0.75 in, penny size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Aug 2, 2004

12 reports on 11 days since 1968 · #243 of 305 South Dakota places

Hail map · Iroquois

Iroquois De Smet Lake Preston 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
12 most recent reports with a location; Kingsbury County is shaded. Open street map

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What the record says about Iroquois

The latest hail report in and around Iroquois is from July 17, 2017, 0.75 in (penny size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Iroquois logged 3 reports on 3 hail days, about 0.1 reports a year. That is 33% of the median South Dakota town on this site (0.5 a year) and ranks #243 of 305 South Dakota cities and towns on this site for all-time reports. Iroquois accounts for 6% of the 187 reports filed in Kingsbury County.

0% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median South Dakota town on this site. The largest hail on record here is 1.75 in (golf ball) on August 2, 2004 near Iroquois.

The busiest year was 2004, with 2 reports on 1 day. Hail here peaks in June (33% of reports); 42% fall between April and June.

Reports a year 2006–2025 average

  • Iroquois 0.1
  • Kingsbury County 4.0
  • Median South Dakota town on this site 0.5

Hail days 2006–2025

  • Iroquois 3
  • Kingsbury County 44
  • Median South Dakota town on this site 7

Share 2 in or larger of sized reports

  • Iroquois 0%
  • Kingsbury County 9%
  • Median South Dakota town on this site 7%

Hail over time

012 1968: 1 reports, largest 1.75 in 1970 1980 1990 1997: 1 reports, largest 0.75 in 1998: 1 reports, largest 0.75 in 1999: 1 reports, largest 1.75 in 2000 2001: 1 reports, largest 1.00 in 2002: 1 reports, largest 0.75 in 2004: 2 reports, largest 1.75 in 2005: 1 reports, largest 1.00 in 2007: 1 reports, largest 0.88 in 2010: 1 reports, largest 0.75 in 2010 2017: 1 reports, largest 0.75 in 2020
Reports per year, 1968–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
01234 Jan Feb Mar April: 1 reports (8%) Apr May June: 4 reports (33%) Jun July: 4 reports (33%) Jul August: 2 reports (17%) Aug September: 1 reports (8%) Sep Oct Nov Dec
All 12 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 1 1

Largest hail on record

Largest hail reports in Iroquois
Date Size Location County Damage Time · source
Aug 2, 2004 1.75 ingolf ball Iroquois Kingsbury $5K 05:24 local · NCEI
Jun 7, 1999 1.75 ingolf ball Iroquois Kingsbury — 20:30 local · NCEI
Jul 3, 1968 1.75 ingolf ball — Kingsbury — 16:34 local · NCEI
Sep 12, 2005 1.00 inquarter 2 SW Iroquois Beadle — 16:25 local · NCEI
Aug 2, 2004 1.00 inquarter 1 W Iroquois Beadle — 05:20 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 Iroquois
Date Size Location County Damage Time · source
Jul 17, 2017 0.75 inpenny Iroquois Kingsbury — 21:01 local · NCEI
Jun 26, 2010 0.75 inpenny Iroquois Kingsbury — 11:53 local · NCEI
Apr 21, 2007 0.88 innickel Iroquois Kingsbury — 19:42 local · NCEI
Sep 12, 2005 1.00 inquarter 2 SW Iroquois Beadle — 16:25 local · NCEI
Aug 2, 2004 1.75 ingolf ball Iroquois Kingsbury $5K 05:24 local · NCEI
Aug 2, 2004 1.00 inquarter 1 W Iroquois Beadle — 05:20 local · NCEI
Jul 28, 2002 0.75 inpenny Iroquois Kingsbury — 12:05 local · NCEI
Jun 12, 2001 1.00 inquarter Iroquois Kingsbury — 20:50 local · NCEI
Jun 7, 1999 1.75 ingolf ball Iroquois Kingsbury — 20:30 local · NCEI
Jun 26, 1998 0.75 inpenny 1 NE Iroquois Beadle — 19:10 local · NCEI
Jul 1, 1997 0.75 inpenny Iroquois Kingsbury — 13:15 local · NCEI
Jul 3, 1968 1.75 ingolf ball — Kingsbury — 16:34 local · NCEI

Hail history near Iroquois

Questions about hail in Iroquois

How often does it hail in Iroquois, South Dakota?

12 hail reports have been logged in and within about 5 km (3 miles) of Iroquois since 1968. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #243 of 305 South Dakota places by number of reports.

When is hail season in Iroquois?

Most reports come in June, July, August. June alone accounts for 33% of all reports.

What is the largest hail recorded in Iroquois?

1.75 in (golf ball size) on August 2, 2004 near Iroquois. 0% of reports here were 2 inches or larger.

When did it last hail in Iroquois?

The most recent report in this data is from July 17, 2017 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Iroquois since November 3, 2021. The last one was on July 17, 2017.

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.