Hail history for Chamberlain, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Chamberlain since 1958, with preliminary reports to November 3, 2026.

Readout · Chamberlain

Last hail: Jul 4, 2026; 1.25 in, half dollar size
Hail days, last 5 years: 2; since Nov 3, 2021 · 2 reports
Largest ever: 2.00 in; hen egg · Jul 13, 1958

42 reports on 31 days since 1958 · #27 of 305 South Dakota places

Hail map · Chamberlain

Under 1 in
1–1.75 in
1.75–2.5 in
2.5–4 in
4 in +
No size

42 most recent reports with a location; Brule County is shaded. Open street map

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What the record says about Chamberlain

The latest hail report in and around Chamberlain is from July 4, 2026, 1.25 in (half dollar size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.25 in on July 4, 2026.

Over the 20 years 2006–2025, Chamberlain logged 22 reports on 16 hail days, about 1.1 reports a year. That is about twice the median South Dakota town on this site (0.5 a year) and ranks #27 of 305 South Dakota cities and towns on this site for all-time reports. Chamberlain accounts for 23% of the 185 reports filed in Brule County.

5% 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 2.00 in (hen egg) on July 13, 1958.

Reports were down 43% in 2016–2025 (8) compared with 2006–2015 (14). The busiest year was 2010, with 8 reports on 5 days. Hail here peaks in June (31% of reports); 48% fall between April and June.

Reports a year 2006–2025 average

Chamberlain 1.1
Brule County 5.5
Median South Dakota town on this site 0.5

Hail days 2006–2025

Chamberlain 16
Brule County 53
Median South Dakota town on this site 7

Share 2 in or larger of sized reports

Chamberlain 5%
Brule County 9%
Median South Dakota town on this site 7%

Hail over time

By yearBy monthLast 10 years

Reports per year, 1958–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.

All 42 reports by calendar month.

Reports per month, 2017–2026. Darker cells had more reports.
Year	Jun	Jul	Aug	Total
2026		1		1
2025				0
2024			1	1
2023				0
2022				0
2021				0
2020	4			4
2019			2	2
2018				0
2017				0

Hail days since Nov 3, 2021

Date	Reports	Largest	Storm page
Jul 4, 2026	1	1.25 in	—
Aug 14, 2024	1	0.75 in	—

Largest hail on record

Largest hail reports in Chamberlain
Date	Size	Location	County	Time · source
Jul 13, 1958	2.00 inhen egg	—	Brule	19:15 local · NCEI
Jul 13, 1958	2.00 inhen egg	—	Brule	19:15 local · NCEI
Jun 20, 2020	1.75 ingolf ball	2 E (9v9)chamberlain Arp	Brule	17:20 local · NCEI
Jun 20, 2020	1.75 ingolf ball	0.5 E (9v9)chamberlain Arp	Brule	17:18 local · NCEI
Jun 20, 2020	1.75 ingolf ball	1 W (9v9)chamberlain Arp	Brule	17:12 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

Under 1 in 8 19%
1–2 in 32 76%
2 in + 2 5%

Most recent reports

Most recent hail reports in Chamberlain
Date	Size	Location	County	Damage	Time · source
Jul 4, 2026	1.25 inhalf dollar	3.64 NE Oacoma	Lyman	—	17:37 local · NCEI
Aug 14, 2024	0.75 inpenny	0.69 N Chamberlain Arpt	Brule	—	18:58 local · NCEI
Jun 20, 2020	1.75 ingolf ball	2 E (9v9)chamberlain Arp	Brule	—	17:20 local · NCEI
Jun 20, 2020	1.75 ingolf ball	0.5 E (9v9)chamberlain Arp	Brule	—	17:18 local · NCEI
Jun 20, 2020	1.75 ingolf ball	1 W (9v9)chamberlain Arp	Brule	—	17:12 local · NCEI
Jun 20, 2020	1.50 inping pong ball	0.69 N Chamberlain	Brule	—	16:58 local · NCEI
Aug 16, 2019	1.00 inquarter	0.5 W Chamberlain	Brule	—	22:52 local · NCEI
Aug 6, 2019	1.75 ingolf ball	2.07 S (9v9)chamberlain Arp	Brule	—	20:54 local · NCEI
Jul 6, 2016	1.50 inping pong ball	(9v9)chamberlain Arp	Brule	—	20:00 local · NCEI
Sep 7, 2015	0.75 inpenny	2.07 S (9v9)chamberlain Arp	Brule	—	19:31 local · NCEI
Jun 16, 2014	1.50 inping pong ball	1.38 N Chamberlain Arpt	Brule	—	09:36 local · NCEI
May 5, 2012	1.75 ingolf ball	0.69 N Chamberlain Arpt	Brule	$20K	07:10 local · NCEI

Hail history near Chamberlain

Oacoma 3 km · 10
Pukwana 12 km · 12
Reliance 24 km · 11
Fort Thompson 29 km · 15
Kimball 31 km · 20
Bijou Hills 34 km · 13
Lower Brule 37 km · 11
Platte Colony 40 km · 10

Questions about hail in Chamberlain

How often does it hail in Chamberlain, South Dakota?

42 hail reports have been logged in and within about 5 km (3 miles) of Chamberlain since 1958. Over the 20 years 2006–2025 that averages 1.1 reports a year. That ranks #27 of 305 South Dakota places by number of reports.

When is hail season in Chamberlain?

Most reports come in June, July, August. June alone accounts for 31% of all reports.

What is the largest hail recorded in Chamberlain?

2.00 in (hen egg size) on July 13, 1958. 5% of reports here were 2 inches or larger.

When did it last hail in Chamberlain?

The most recent report in this data is from July 4, 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 Chamberlain had in the last five years?

2 separate days with hail reports since November 3, 2021, adding up to 2 reports. The most recent was July 4, 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.