Hail History

Hail history for Dayton, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Dayton since 1998, with preliminary reports to November 3, 2026.

Readout · Dayton

Last hail
May 15, 2017
1.25 in, half dollar size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Jul 2, 1999

10 reports on 7 days since 1998 · #444 of 483 Iowa places

Hail map · Dayton

Dayton Stratford Gowrie Stanhope Duncombe Fort Dodge 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
10 most recent reports with a location; Webster County is shaded. Open street map

For homeowners

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What the record says about Dayton

The latest hail report in and around Dayton is from May 15, 2017, 1.25 in (half dollar size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Dayton logged 3 reports on 3 hail days, about 0.1 reports a year. That is 33% of the median Iowa town on this site (0.5 a year) and ranks #444 of 483 Iowa cities and towns on this site for all-time reports. Dayton accounts for 4% of the 226 reports filed in Webster 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 July 2, 1999 near Dayton.

The busiest year was 1998, with 4 reports on 2 days. Hail here peaks in July (40% of reports); 50% fall between April and June.

Reports a year 2006–2025 average

  • Dayton 0.1
  • Webster County 6.5
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Dayton 3
  • Webster County 59
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Dayton 0%
  • Webster County 3%
  • Median Iowa town on this site 6%

Hail over time

01234 1998: 4 reports, largest 1.75 in 1999: 2 reports, largest 1.75 in 2000 2003: 1 reports, largest 0.88 in 2005 2009: 1 reports, largest 1.00 in 2010 2011: 1 reports, largest 0.75 in 2015 2017: 1 reports, largest 1.25 in 2020 2025
Reports per year, 1998–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
01234 Jan Feb Mar April: 3 reports (30%) Apr May: 1 reports (10%) May June: 1 reports (10%) Jun July: 4 reports (40%) Jul August: 1 reports (10%) Aug Sep Oct Nov Dec
All 10 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 1 1

Largest hail on record

Largest hail reports in Dayton
Date Size Location County Damage Time · source
Jul 2, 1999 1.75 ingolf ball Dayton Webster $15K 16:38 local · NCEI
Jul 2, 1999 1.75 ingolf ball Dayton Webster $10K 16:26 local · NCEI
Apr 6, 1998 1.75 ingolf ball Dayton Webster $10K 18:35 local · NCEI
May 15, 2017 1.25 inhalf dollar 2.07 S Dayton Webster — 12:07 local · NCEI
Aug 19, 2009 1.00 inquarter 2.65 WSW Dayton Webster — 20:46 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Dayton
Date Size Location County Damage Time · source
May 15, 2017 1.25 inhalf dollar 2.07 S Dayton Webster — 12:07 local · NCEI
Jul 5, 2011 0.75 inpenny 1.87 WNW Dayton Webster — 17:10 local · NCEI
Aug 19, 2009 1.00 inquarter 2.65 WSW Dayton Webster — 20:46 local · NCEI
Jul 4, 2003 0.88 innickel Dayton Webster $2K 23:15 local · NCEI
Jul 2, 1999 1.75 ingolf ball Dayton Webster $15K 16:38 local · NCEI
Jul 2, 1999 1.75 ingolf ball Dayton Webster $10K 16:26 local · NCEI
Jun 18, 1998 0.75 inpenny 2 SW Dayton Webster — 09:58 local · NCEI
Apr 6, 1998 0.75 inpenny Dayton Webster $1K 18:45 local · NCEI
Apr 6, 1998 0.75 inpenny 2 E Dayton Webster $500 18:44 local · NCEI
Apr 6, 1998 1.75 ingolf ball Dayton Webster $10K 18:35 local · NCEI

Hail history near Dayton

Questions about hail in Dayton

How often does it hail in Dayton, Iowa?

10 hail reports have been logged in and within about 5 km (3 miles) of Dayton since 1998. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #444 of 483 Iowa places by number of reports.

When is hail season in Dayton?

Most reports come in July, April, May. July alone accounts for 40% of all reports.

What is the largest hail recorded in Dayton?

1.75 in (golf ball size) on July 2, 1999 near Dayton. 0% of reports here were 2 inches or larger.

When did it last hail in Dayton?

The most recent report in this data is from May 15, 2017 (1.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Dayton since November 3, 2021. The last one was on May 15, 2017.

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.