Hail History

Hail history for Clear Lake, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Clear Lake since 1965, with preliminary reports to November 3, 2026.

Readout · Clear Lake

Last hail
Oct 24, 2024
1.75 in, golf ball size
Hail days, last 5 years
2
since Nov 3, 2021 · 3 reports
Largest ever
1.75 in
golf ball · Oct 24, 2024

33 reports on 18 days since 1965 · #58 of 483 Iowa places

Hail map · Clear Lake

Clear Lake Mason City Garner Thornton Rockwell Forest City Nora Springs 5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
33 most recent reports with a location; Cerro Gordo County is shaded. Open street map

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What the record says about Clear Lake

The latest hail report in and around Clear Lake is from October 24, 2024, 1.75 in (golf ball size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.75 in on October 24, 2024.

Over the 20 years 2006–2025, Clear Lake logged 20 reports on 8 hail days, about 1.0 reports a year. That is about twice the median Iowa town on this site (0.5 a year) and ranks #58 of 483 Iowa cities and towns on this site for all-time reports. Clear Lake accounts for 18% of the 184 reports filed in Cerro Gordo 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 October 24, 2024 near 3.33 WNW Burchinal.

Reports were up 467% in 2016–2025 (17) compared with 2006–2015 (3). The busiest year was 2018, with 6 reports on 2 days. Hail here peaks in June (24% of reports); 52% fall between April and June.

Reports a year 2006–2025 average

  • Clear Lake 1.0
  • Cerro Gordo County 5.1
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Clear Lake 8
  • Cerro Gordo County 47
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Clear Lake 0%
  • Cerro Gordo County 2%
  • Median Iowa town on this site 6%

Hail over time

0246 1965: 1 reports, largest 1.00 in 1970 1979: 1 reports, largest 1.75 in 1980 1990 1999: 2 reports, largest 0.88 in 2000: 1 reports, largest 1.00 in 2000 2001: 1 reports, largest 1.75 in 2002: 2 reports, largest 0.88 in 2003: 3 reports, largest 1.75 in 2004: 2 reports, largest 1.00 in 2006: 3 reports, largest 1.25 in 2010 2017: 5 reports, largest 1.50 in 2018: 6 reports, largest 1.75 in 2020: 3 reports, largest 1.00 in 2020 2022: 1 reports, largest 1.00 in 2024: 2 reports, largest 1.75 in
Reports per year, 1965–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb Mar April: 3 reports (9%) Apr May: 6 reports (18%) May June: 8 reports (24%) Jun July: 5 reports (15%) Jul August: 8 reports (24%) Aug September: 1 reports (3%) Sep October: 2 reports (6%) Oct Nov Dec
All 33 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 2 2
2023 0
2022 1 1
2021 0
2020 3 3
2019 0
2018 15 6
2017 23 5

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Oct 24, 2024 2 1.75 in —
Apr 12, 2022 1 1.00 in —

Largest hail on record

Largest hail reports in Clear Lake
Date Size Location County Damage Time · source
Oct 24, 2024 1.75 ingolf ball 3.33 WNW Burchinal Cerro Gordo — 15:49 local · NCEI
Aug 24, 2018 1.75 ingolf ball 0.86 NE Clear Lake Cerro Gordo $5K 17:50 local · NCEI
May 14, 2003 1.75 ingolf ball 3 S Clear Lake Cerro Gordo $10K 13:42 local · NCEI
Jun 18, 2001 1.75 ingolf ball 3 N Clear Lake Cerro Gordo $10K 21:17 local · NCEI
Aug 28, 1979 1.75 ingolf ball — Cerro Gordo — 18:10 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 Clear Lake
Date Size Location County Damage Time · source
Oct 24, 2024 1.75 ingolf ball 3.33 WNW Burchinal Cerro Gordo — 15:49 local · NCEI
Oct 24, 2024 1.00 inquarter 1.01 E Clear Lake Cerro Gordo — 15:49 local · NCEI
Apr 12, 2022 1.00 inquarter 3.33 WNW Burchinal Cerro Gordo — 20:23 local · NCEI
Jun 21, 2020 0.75 inpenny 1.22 NW Clear Lake Cerro Gordo — 17:55 local · NCEI
Jun 21, 2020 0.88 innickel 1.47 NNW Clear Lake Cerro Gordo — 17:55 local · NCEI
Jun 21, 2020 1.00 inquarter 0.86 SW Clear Lake Cerro Gordo — 17:54 local · NCEI
Aug 24, 2018 1.25 inhalf dollar 0.86 NE Clear Lake Cerro Gordo $2K 17:56 local · NCEI
Aug 24, 2018 1.75 ingolf ball 0.86 NE Clear Lake Cerro Gordo $5K 17:50 local · NCEI
Aug 24, 2018 1.25 inhalf dollar 1.47 NNE Clear Lake Lake Cerro Gordo — 17:45 local · NCEI
Aug 24, 2018 1.00 inquarter 1.51 W (Mcw)mason City Muni Cerro Gordo — 17:44 local · NCEI
Aug 24, 2018 1.00 inquarter 0.69 N Clear Lake Cerro Gordo — 17:43 local · NCEI
Jun 30, 2018 1.50 inping pong ball 1.51 E Clear Lake Cerro Gordo $2K 14:15 local · NCEI

Hail history near Clear Lake

Questions about hail in Clear Lake

How often does it hail in Clear Lake, Iowa?

33 hail reports have been logged in and within about 5 km (3 miles) of Clear Lake since 1965. Over the 20 years 2006–2025 that averages 1.0 reports a year. That ranks #58 of 483 Iowa places by number of reports.

When is hail season in Clear Lake?

Most reports come in June, August, May. June alone accounts for 24% of all reports.

What is the largest hail recorded in Clear Lake?

1.75 in (golf ball size) on October 24, 2024 near 3.33 WNW Burchinal. 0% of reports here were 2 inches or larger.

When did it last hail in Clear Lake?

The most recent report in this data is from October 24, 2024 (1.75 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

2 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was October 24, 2024.

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.