Hail History

Hail history for Thompson, Iowa

NOAA hail reports in and within about 5 km (3 miles) of Thompson since 1971, with preliminary reports to November 3, 2026.

Readout · Thompson

Last hail
Jun 16, 2017
0.88 in, nickel size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Jul 24, 2015

10 reports on 9 days since 1971 · #481 of 483 Iowa places

Hail map · Thompson

Thompson Buffalo Center Forest City Lake Mills 5 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; Winnebago County is shaded. Open street map

For homeowners

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Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Thompson is from June 16, 2017. A local roofer can check and document it at no cost.

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What the record says about Thompson

The latest hail report in and around Thompson is from June 16, 2017, 0.88 in (nickel size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Thompson 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 #481 of 483 Iowa cities and towns on this site for all-time reports. Thompson accounts for 10% of the 105 reports filed in Winnebago 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 24, 2015 near 0.5 W Thompson.

The busiest year was 2001, with 2 reports on 1 day. Hail here peaks in June (50% of reports); 80% fall between April and June.

Reports a year 2006–2025 average

  • Thompson 0.1
  • Winnebago County 2.3
  • Median Iowa town on this site 0.5

Hail days 2006–2025

  • Thompson 3
  • Winnebago County 25
  • Median Iowa town on this site 7

Share 2 in or larger of sized reports

  • Thompson 0%
  • Winnebago County 9%
  • Median Iowa town on this site 6%

Hail over time

012 1971: 1 reports, largest 1.75 in 1980 1990 1997: 1 reports, largest 1.00 in 2000: 1 reports, largest 0.88 in 2000 2001: 2 reports, largest 1.75 in 2003: 1 reports, largest 1.00 in 2004: 1 reports, largest 1.25 in 2008: 1 reports, largest 1.00 in 2010 2015: 1 reports, largest 1.75 in 2017: 1 reports, largest 0.88 in 2020
Reports per year, 1971–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar April: 1 reports (10%) Apr May: 2 reports (20%) May June: 5 reports (50%) Jun July: 2 reports (20%) Jul 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 Thompson
Date Size Location County Damage Time · source
Jul 24, 2015 1.75 ingolf ball 0.5 W Thompson Winnebago $5K 03:50 local · NCEI
Jun 18, 2001 1.75 ingolf ball 1 W Thompson Winnebago $5K 19:45 local · NCEI
Jun 18, 2001 1.75 ingolf ball Thompson Winnebago $10K 19:43 local · NCEI
Jun 19, 1971 1.75 ingolf ball — Winnebago — 14:38 local · NCEI
Apr 17, 2004 1.25 inhalf dollar Thompson Winnebago $5K 19:37 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 Thompson
Date Size Location County Damage Time · source
Jun 16, 2017 0.88 innickel Thompson Winnebago — 15:36 local · NCEI
Jul 24, 2015 1.75 ingolf ball 0.5 W Thompson Winnebago $5K 03:50 local · NCEI
Jun 7, 2008 1.00 inquarter 2.76 N Thompson Winnebago $3K 14:40 local · NCEI
Apr 17, 2004 1.25 inhalf dollar Thompson Winnebago $5K 19:37 local · NCEI
May 14, 2003 1.00 inquarter 1 N Thompson Winnebago $3K 12:36 local · NCEI
Jun 18, 2001 1.75 ingolf ball 1 W Thompson Winnebago $5K 19:45 local · NCEI
Jun 18, 2001 1.75 ingolf ball Thompson Winnebago $10K 19:43 local · NCEI
May 31, 2000 0.88 innickel 3 SE Thompson Winnebago $1K 20:18 local · NCEI
Jul 7, 1997 1.00 inquarter 3 W Thompson Winnebago $5K 20:30 local · NCEI
Jun 19, 1971 1.75 ingolf ball — Winnebago — 14:38 local · NCEI

Hail history near Thompson

Questions about hail in Thompson

How often does it hail in Thompson, Iowa?

10 hail reports have been logged in and within about 5 km (3 miles) of Thompson since 1971. Over the 20 years 2006–2025 that averages 0.1 reports a year. That ranks #481 of 483 Iowa places by number of reports.

When is hail season in Thompson?

Most reports come in June, May, July. June alone accounts for 50% of all reports.

What is the largest hail recorded in Thompson?

1.75 in (golf ball size) on July 24, 2015 near 0.5 W Thompson. 0% of reports here were 2 inches or larger.

When did it last hail in Thompson?

The most recent report in this data is from June 16, 2017 (0.88 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Thompson since November 3, 2021. The last one was on June 16, 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.