Hail History

Hail history for Hopkinton, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Hopkinton since 1973, with preliminary reports to November 3, 2026.

Readout · Hopkinton

Last hail
Apr 19, 2023
1.00 in, quarter size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
4.50 in
softball · Jun 18, 1998

13 reports on 11 days since 1973 · #323 of 483 Iowa places

Hail map · Hopkinton

Hopkinton Delhi Dyersville Ryan Cascade Manchester 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; Delaware County is shaded. Open street map

For homeowners

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What the record says about Hopkinton

The latest hail report in and around Hopkinton is from April 19, 2023, 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 19, 2023.

Over the 20 years 2006–2025, Hopkinton logged 9 reports on 7 hail days, about 0.5 reports a year. That is about the same as the median Iowa town on this site (0.5 a year) and ranks #323 of 483 Iowa cities and towns on this site for all-time reports. Hopkinton accounts for 9% of the 152 reports filed in Delaware County.

15% 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 4.50 in (softball) on June 18, 1998 near Hopkinton.

Reports were down 88% in 2016–2025 (1) compared with 2006–2015 (8). The busiest year was 2008, with 3 reports on 2 days. Hail here peaks in April (31% of reports); 62% fall between April and June.

Reports a year 2006–2025 average

  • Hopkinton 0.5
  • Delaware County 4.4
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Hopkinton 7
  • Delaware County 38
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Hopkinton 15%
  • Delaware County 5%
  • Median Iowa town on this site 6%

Hail over time

0123 1973: 1 reports, largest 1.00 in 1977: 1 reports, largest 1.75 in 1980 1990 1997: 1 reports, largest 4.50 in 1998: 1 reports, largest 4.50 in 2000 2007: 1 reports, largest 1.00 in 2008: 3 reports, largest 1.25 in 2009: 1 reports, largest 1.00 in 2010 2011: 2 reports, largest 1.00 in 2015: 1 reports, largest 1.00 in 2020 2023: 1 reports, largest 1.00 in
Reports per year, 1973–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
01234 Jan Feb Mar April: 4 reports (31%) Apr May: 2 reports (15%) May June: 2 reports (15%) Jun July: 3 reports (23%) Jul August: 1 reports (8%) Aug September: 1 reports (8%) 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 1 1
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Apr 19, 2023 1 1.00 in —

Largest hail on record

Largest hail reports in Hopkinton
Date Size Location County Damage Time · source
Jun 18, 1998 4.50 insoftball Hopkinton Delaware $8K 15:30 local · NCEI
May 18, 1997 4.50 insoftball Hopkinton Delaware — 17:05 local · NCEI
May 16, 1977 1.75 ingolf ball — Delaware — 15:30 local · NCEI
Jul 10, 2008 1.25 inhalf dollar 0.69 S Hopkinton Delaware — 17:15 local · NCEI
Apr 19, 2023 1.00 inquarter 0.86 NW Hopkinton Delaware — 08:55 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 Hopkinton
Date Size Location County Damage Time · source
Apr 19, 2023 1.00 inquarter 0.86 NW Hopkinton Delaware — 08:55 local · NCEI
Jun 20, 2015 1.00 inquarter 0.69 S Hopkinton Delaware — 16:12 local · NCEI
Apr 3, 2011 1.00 inquarter 0.69 S Hopkinton Delaware — 18:17 local · NCEI
Apr 3, 2011 1.00 inquarter 1.23 SW Hopkinton Delaware — 18:14 local · NCEI
Jul 24, 2009 1.00 inquarter 2.76 N Hopkinton Delaware — 14:00 local · NCEI
Aug 4, 2008 1.00 inquarter 0.69 S Hopkinton Delaware — 15:55 local · NCEI
Jul 10, 2008 1.25 inhalf dollar 0.69 S Hopkinton Delaware — 17:15 local · NCEI
Jul 10, 2008 1.00 inquarter 0.86 NW Sand Spg Delaware — 12:03 local · NCEI
Apr 2, 2007 1.00 inquarter 0.69 S Hopkinton Delaware — 22:35 local · NCEI
Jun 18, 1998 4.50 insoftball Hopkinton Delaware $8K 15:30 local · NCEI
May 18, 1997 4.50 insoftball Hopkinton Delaware — 17:05 local · NCEI
May 16, 1977 1.75 ingolf ball — Delaware — 15:30 local · NCEI

Hail history near Hopkinton

Questions about hail in Hopkinton

How often does it hail in Hopkinton, Iowa?

13 hail reports have been logged in and within about 5 km (3 miles) of Hopkinton since 1973. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #323 of 483 Iowa places by number of reports.

When is hail season in Hopkinton?

Most reports come in April, July, May. April alone accounts for 31% of all reports.

What is the largest hail recorded in Hopkinton?

4.50 in (softball size) on June 18, 1998 near Hopkinton. 15% of reports here were 2 inches or larger.

When did it last hail in Hopkinton?

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