Hail History

Hail history for Armour, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Armour since 1980, with preliminary reports to November 3, 2026.

Readout · Armour

Last hail
Apr 12, 2022
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
2.75 in
baseball · Jun 6, 1980

13 reports on 10 days since 1980 · #223 of 305 South Dakota places

Hail map · Armour

Armour Corsica Delmont Geddes 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
13 most recent reports with a location; Douglas County is shaded. Open street map

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What the record says about Armour

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

Over the 20 years 2006–2025, Armour logged 7 reports on 5 hail days, about 0.3 reports a year. That is 22% less than the median South Dakota town on this site (0.5 a year) and ranks #223 of 305 South Dakota cities and towns on this site for all-time reports. Armour accounts for 13% of the 97 reports filed in Douglas County.

8% 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 2.75 in (baseball) on June 6, 1980.

The busiest year was 2017, with 3 reports on 2 days. Hail here peaks in June (46% of reports); 54% fall between April and June.

Reports a year 2006–2025 average

  • Armour 0.3
  • Douglas County 3.2
  • Median South Dakota town on this site 0.5

Hail days 2006–2025

  • Armour 5
  • Douglas County 34
  • Median South Dakota town on this site 7

Share 2 in or larger of sized reports

  • Armour 8%
  • Douglas County 12%
  • Median South Dakota town on this site 7%

Hail over time

0123 1980: 1 reports, largest 2.75 in 1980 1988: 1 reports, largest 0.75 in 1990 2000 2001: 2 reports, largest 0.75 in 2003: 1 reports, largest 1.00 in 2004: 1 reports, largest 1.00 in 2009: 2 reports, largest 1.00 in 2010 2017: 3 reports, largest 1.25 in 2018: 1 reports, largest 0.88 in 2020 2022: 1 reports, largest 1.00 in
Reports per year, 1980–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar April: 1 reports (8%) Apr May June: 6 reports (46%) Jun July: 2 reports (15%) Jul August: 2 reports (15%) Aug Sep October: 2 reports (15%) Oct Nov Dec
All 13 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 1 1
2017 21 3

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Apr 12, 2022 1 1.00 in —

Largest hail on record

Largest hail reports in Armour
Date Size Location County Time · source
Jun 6, 1980 2.75 inbaseball — Douglas 20:30 local · NCEI
Jun 27, 2017 1.25 inhalf dollar 0.69 S Armour Douglas 21:43 local · NCEI
Jun 27, 2017 1.25 inhalf dollar Armour Douglas 21:34 local · NCEI
Apr 12, 2022 1.00 inquarter 0.5 E Armour Douglas 16:31 local · NCEI
Aug 13, 2017 1.00 inquarter 0.85 SW Armour Douglas 14:51 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 Armour
Date Size Location County Time · source
Apr 12, 2022 1.00 inquarter 0.5 E Armour Douglas 16:31 local · NCEI
Jun 27, 2018 0.88 innickel 0.5 E Armour Douglas 09:04 local · NCEI
Aug 13, 2017 1.00 inquarter 0.85 SW Armour Douglas 14:51 local · NCEI
Jun 27, 2017 1.25 inhalf dollar 0.69 S Armour Douglas 21:43 local · NCEI
Jun 27, 2017 1.25 inhalf dollar Armour Douglas 21:34 local · NCEI
Jun 25, 2009 0.88 innickel 0.5 E Armour Douglas 00:00 local · NCEI
Jun 25, 2009 1.00 inquarter 2.51 W Armour Douglas 00:00 local · NCEI
Aug 23, 2004 1.00 inquarter 3 NW Armour Douglas 22:45 local · NCEI
Jul 3, 2003 1.00 inquarter 4 N Armour Douglas 21:10 local · NCEI
Oct 9, 2001 0.75 inpenny 4 SE Armour Douglas 19:08 local · NCEI
Oct 9, 2001 0.75 inpenny 3 S Armour Douglas 19:02 local · NCEI
Jul 29, 1988 0.75 inpenny — Douglas 17:15 local · NCEI

Hail history near Armour

Questions about hail in Armour

How often does it hail in Armour, South Dakota?

13 hail reports have been logged in and within about 5 km (3 miles) of Armour since 1980. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #223 of 305 South Dakota places by number of reports.

When is hail season in Armour?

Most reports come in June, July, August. June alone accounts for 46% of all reports.

What is the largest hail recorded in Armour?

2.75 in (baseball size) on June 6, 1980. 8% of reports here were 2 inches or larger.

When did it last hail in Armour?

The most recent report in this data is from April 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 Armour 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 April 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.