Hail History

Hail history for Peterson, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Peterson since 1974, with preliminary reports to November 3, 2026.

Readout · Peterson

Last hail
Apr 13, 2026
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
1.75 in
golf ball · Jun 16, 2014

17 reports on 16 days since 1974 · #228 of 483 Iowa places

Hail map · Peterson

Peterson Linn Grove Sutherland Sioux Rapids Royal Larrabee 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
17 most recent reports with a location; Clay County is shaded. Open street map

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What the record says about Peterson

The latest hail report in and around Peterson is from April 13, 2026, 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 13, 2026.

Over the 20 years 2006–2025, Peterson logged 6 reports on 6 hail days, about 0.3 reports a year. That is 33% less than the median Iowa town on this site (0.5 a year) and ranks #228 of 483 Iowa cities and towns on this site for all-time reports. Peterson accounts for 7% of the 253 reports filed in Clay County.

0% 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 1.75 in (golf ball) on June 16, 2014 near 0.51 E Peterson.

The busiest year was 2004, with 3 reports on 3 days. Hail here peaks in June (41% of reports); 82% fall between April and June.

Reports a year 2006–2025 average

  • Peterson 0.3
  • Clay County 4.3
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Peterson 6
  • Clay County 47
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Peterson 0%
  • Clay County 7%
  • Median Iowa town on this site 6%

Hail over time

0123 1974: 1 reports, largest 1.00 in 1980 1986: 1 reports, largest 1.00 in 1990 2000 2001: 2 reports, largest 1.00 in 2002: 3 reports, largest 0.75 in 2004: 3 reports, largest 0.75 in 2010: 1 reports, largest 1.75 in 2010 2014: 2 reports, largest 1.75 in 2017: 1 reports, largest 1.00 in 2018: 2 reports, largest 1.25 in 2020 2026: 1 reports, largest 1.00 in
Reports per year, 1974–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb Mar April: 4 reports (24%) Apr May: 3 reports (18%) May June: 7 reports (41%) Jun Jul August: 2 reports (12%) Aug Sep October: 1 reports (6%) Oct Nov Dec
All 17 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 1 1
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 2 2
2017 1 1

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Apr 13, 2026 1 1.00 in —

Largest hail on record

Largest hail reports in Peterson
Date Size Location County Time · source
Jun 16, 2014 1.75 ingolf ball 0.51 E Peterson Clay 15:54 local · NCEI
Jun 17, 2010 1.75 ingolf ball 1.52 E Peterson Clay 16:05 local · NCEI
Jun 14, 2018 1.25 inhalf dollar 0.51 E Peterson Clay 03:22 local · NCEI
Apr 13, 2026 1.00 inquarter 1.47 NNW Peterson Clay 18:24 local · NCEI
Oct 2, 2017 1.00 inquarter 0.51 E Peterson Clay 18:08 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Peterson
Date Size Location County Time · source
Apr 13, 2026 1.00 inquarter 1.47 NNW Peterson Clay 18:24 local · NCEI
Jun 24, 2018 0.88 innickel 0.51 E Peterson Clay 17:14 local · NCEI
Jun 14, 2018 1.25 inhalf dollar 0.51 E Peterson Clay 03:22 local · NCEI
Oct 2, 2017 1.00 inquarter 0.51 E Peterson Clay 18:08 local · NCEI
Jun 26, 2014 0.88 innickel 0.51 E Peterson Clay 06:02 local · NCEI
Jun 16, 2014 1.75 ingolf ball 0.51 E Peterson Clay 15:54 local · NCEI
Jun 17, 2010 1.75 ingolf ball 1.52 E Peterson Clay 16:05 local · NCEI
Jun 11, 2004 0.75 inpenny 5 W Linn Grove Buena Vista 12:47 local · NCEI
May 21, 2004 0.75 inpenny 6 W Linn Grove Buena Vista 21:05 local · NCEI
Apr 18, 2004 0.75 inpenny 6 W Linn Grove Buena Vista 19:01 local · NCEI
Aug 16, 2002 0.75 inpenny 2 W Peterson Clay 15:00 local · NCEI
Apr 16, 2002 0.75 inpenny Peterson Clay 21:10 local · NCEI

Hail history near Peterson

Questions about hail in Peterson

How often does it hail in Peterson, Iowa?

17 hail reports have been logged in and within about 5 km (3 miles) of Peterson since 1974. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #228 of 483 Iowa places by number of reports.

When is hail season in Peterson?

Most reports come in June, April, May. June alone accounts for 41% of all reports.

What is the largest hail recorded in Peterson?

1.75 in (golf ball size) on June 16, 2014 near 0.51 E Peterson. 0% of reports here were 2 inches or larger.

When did it last hail in Peterson?

The most recent report in this data is from April 13, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Peterson 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 13, 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.