Hail History

Hail history for Williams, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Williams since 1976, with preliminary reports to November 3, 2026.

Readout · Williams

Last hail
Aug 1, 2018
0.75 in, penny size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · May 30, 2000

12 reports on 10 days since 1976 · #387 of 483 Iowa places

Hail map · Williams

Williams Jewell Junction Webster City Stanhope 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
12 most recent reports with a location; Hamilton County is shaded. Open street map

For homeowners

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What the record says about Williams

The latest hail report in and around Williams is from August 1, 2018, 0.75 in (penny size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Williams 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 #387 of 483 Iowa cities and towns on this site for all-time reports. Williams accounts for 8% of the 149 reports filed in Hamilton 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 May 30, 2000 near Williams.

The busiest year was 2000, with 3 reports on 1 day. Hail here peaks in May (42% of reports); 75% fall between April and June.

Reports a year 2006–2025 average

  • Williams 0.1
  • Hamilton County 3.4
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Williams 3
  • Hamilton County 29
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Williams 0%
  • Hamilton County 5%
  • Median Iowa town on this site 6%

Hail over time

0123 1976: 1 reports, largest 1.00 in 1980: 1 reports, largest 1.75 in 1980 1987: 1 reports, largest 1.75 in 1989: 1 reports, largest 1.75 in 1990 2000: 3 reports, largest 1.75 in 2000 2001: 1 reports, largest 0.75 in 2005: 1 reports, largest 1.00 in 2007: 2 reports, largest 1.00 in 2010 2018: 1 reports, largest 0.75 in 2020
Reports per year, 1976–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar April: 2 reports (17%) Apr May: 5 reports (42%) May June: 2 reports (17%) Jun Jul August: 2 reports (17%) Aug September: 1 reports (8%) Sep Oct Nov Dec
All 12 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 1 1
2017 0

Largest hail on record

Largest hail reports in Williams
Date Size Location County Damage Time · source
May 30, 2000 1.75 ingolf ball Williams Hamilton $25K 20:30 local · NCEI
May 30, 1989 1.75 ingolf ball — Hardin — 05:34 local · NCEI
Apr 26, 1987 1.75 ingolf ball — Hamilton — 19:22 local · NCEI
Jun 6, 1980 1.75 ingolf ball — Hardin — 16:45 local · NCEI
Apr 2, 2007 1.00 inquarter 2.31 NNW Williams Hamilton $5K 21:04 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 Williams
Date Size Location County Damage Time · source
Aug 1, 2018 0.75 inpenny 1.23 NE Williams Hamilton — 17:41 local · NCEI
May 14, 2007 0.88 innickel 0.86 NE Williams Hamilton $1K 18:11 local · NCEI
Apr 2, 2007 1.00 inquarter 2.31 NNW Williams Hamilton $5K 21:04 local · NCEI
Jun 8, 2005 1.00 inquarter Alden Hardin $5K 05:29 local · NCEI
Sep 20, 2001 0.75 inpenny 2 S Williams Hamilton — 16:21 local · NCEI
May 30, 2000 1.75 ingolf ball Williams Hamilton $25K 20:30 local · NCEI
May 30, 2000 0.88 innickel Williams Hamilton $2K 20:13 local · NCEI
May 30, 2000 1.00 inquarter 4 SE Blairsburg Hamilton $5K 20:10 local · NCEI
May 30, 1989 1.75 ingolf ball — Hardin — 05:34 local · NCEI
Apr 26, 1987 1.75 ingolf ball — Hamilton — 19:22 local · NCEI
Jun 6, 1980 1.75 ingolf ball — Hardin — 16:45 local · NCEI
Aug 11, 1976 1.00 inquarter — Hamilton — 13:25 local · NCEI

Hail history near Williams

Questions about hail in Williams

How often does it hail in Williams, Iowa?

12 hail reports have been logged in and within about 5 km (3 miles) of Williams since 1976. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #387 of 483 Iowa places by number of reports.

When is hail season in Williams?

Most reports come in May, April, June. May alone accounts for 42% of all reports.

What is the largest hail recorded in Williams?

1.75 in (golf ball size) on May 30, 2000 near Williams. 0% of reports here were 2 inches or larger.

When did it last hail in Williams?

The most recent report in this data is from August 1, 2018 (0.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Williams since November 3, 2021. The last one was on August 1, 2018.

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.