Hail History

Hail history for Cottonwood, Minnesota

NOAA hail reports in and within about 5 km (3 miles) of Cottonwood since 1977, with preliminary reports to November 3, 2026.

Readout · Cottonwood

Last hail
Jul 19, 2023
1.00 in, quarter size
Hail days, last 5 years
2
since Nov 3, 2021 · 4 reports
Largest ever
1.75 in
golf ball · Jun 24, 2003

13 reports on 10 days since 1977 · #307 of 451 Minnesota places

Hail map · Cottonwood

Cottonwood Marshall Ghent Milroy Minneota Lynd 10 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; Lyon County is shaded. Open street map

For homeowners

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What the record says about Cottonwood

The latest hail report in and around Cottonwood is from July 19, 2023, 1.00 in (quarter size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.25 in on May 11, 2022.

Over the 20 years 2006–2025, Cottonwood logged 8 reports on 5 hail days, about 0.4 reports a year. That is 11% less than the median Minnesota town on this site (0.5 a year) and ranks #307 of 451 Minnesota cities and towns on this site for all-time reports. Cottonwood accounts for 5% of the 255 reports filed in Lyon County.

0% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Minnesota town on this site. The largest hail on record here is 1.75 in (golf ball) on June 24, 2003 near Cottonwood.

Reports were up 600% in 2016–2025 (7) compared with 2006–2015 (1). The busiest year was 2019, with 3 reports on 2 days. Hail here peaks in June (38% of reports); 54% fall between April and June.

Reports a year 2006–2025 average

  • Cottonwood 0.4
  • Lyon County 7.8
  • Median Minnesota town on this site 0.5

Hail days 2006–2025

  • Cottonwood 5
  • Lyon County 63
  • Median Minnesota town on this site 7

Share 2 in or larger of sized reports

  • Cottonwood 0%
  • Lyon County 7%
  • Median Minnesota town on this site 6%

Hail over time

0123 1977: 1 reports, largest 1.75 in 1979: 1 reports, largest 1.00 in 1980 1984: 1 reports, largest 1.75 in 1990 2000 2003: 1 reports, largest 1.75 in 2004: 1 reports, largest 0.75 in 2008: 1 reports, largest 0.75 in 2010 2019: 3 reports, largest 0.88 in 2020 2022: 2 reports, largest 1.25 in 2023: 2 reports, largest 1.00 in
Reports per year, 1977–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar Apr May: 2 reports (15%) May June: 5 reports (38%) Jun July: 3 reports (23%) Jul August: 3 reports (23%) Aug Sep 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 2 2
2022 2 2
2021 0
2020 0
2019 3 3
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Jul 19, 2023 2 1.00 in —
May 11, 2022 2 1.25 in —

Largest hail on record

Largest hail reports in Cottonwood
Date Size Location County Time · source
Jun 24, 2003 1.75 ingolf ball Cottonwood Lyon 19:23 local · NCEI
Jun 22, 1984 1.75 ingolf ball — Lyon 11:40 local · NCEI
Aug 9, 1977 1.75 ingolf ball — Lyon 14:00 local · NCEI
May 11, 2022 1.25 inhalf dollar 0.69 S Cottonwood Lyon 11:37 local · NCEI
Jul 19, 2023 1.00 inquarter 0.69 S Cottonwood Lyon 15:15 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 Cottonwood
Date Size Location County Time · source
Jul 19, 2023 1.00 inquarter 0.69 S Cottonwood Lyon 15:15 local · NCEI
Jul 19, 2023 0.75 inpenny 2.81 S Cottonwood Lyon 15:13 local · NCEI
May 11, 2022 1.25 inhalf dollar 0.69 S Cottonwood Lyon 11:37 local · NCEI
May 11, 2022 1.00 inquarter 0.69 S Cottonwood Lyon 11:36 local · NCEI
Jun 20, 2019 0.75 inpenny 1.99 E Cottonwood Lyon 15:09 local · NCEI
Jun 20, 2019 0.88 innickel 2.4 SE Cottonwood Lyon 15:08 local · NCEI
Jun 4, 2019 0.88 innickel 0.69 S Cottonwood Lyon 16:57 local · NCEI
Jul 31, 2008 0.75 inpenny 1.38 S Cottonwood Lyon 05:27 local · NCEI
Aug 25, 2004 0.75 inpenny 3 SW Cottonwood Lyon 13:40 local · NCEI
Jun 24, 2003 1.75 ingolf ball Cottonwood Lyon 19:23 local · NCEI
Jun 22, 1984 1.75 ingolf ball — Lyon 11:40 local · NCEI
Aug 4, 1979 1.00 inquarter — Lyon 01:00 local · NCEI

Hail history near Cottonwood

Questions about hail in Cottonwood

How often does it hail in Cottonwood, Minnesota?

13 hail reports have been logged in and within about 5 km (3 miles) of Cottonwood since 1977. Over the 20 years 2006–2025 that averages 0.4 reports a year. That ranks #307 of 451 Minnesota places by number of reports.

When is hail season in Cottonwood?

Most reports come in June, July, August. June alone accounts for 38% of all reports.

What is the largest hail recorded in Cottonwood?

1.75 in (golf ball size) on June 24, 2003 near Cottonwood. 0% of reports here were 2 inches or larger.

When did it last hail in Cottonwood?

The most recent report in this data is from July 19, 2023 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

2 separate days with hail reports since November 3, 2021, adding up to 4 reports. The most recent was July 19, 2023.

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.