Hail History

Hail history for Koshkonong, Missouri

NOAA hail reports in and within about 5 km (3 miles) of Koshkonong since 1996, with preliminary reports to November 3, 2026.

Readout · Koshkonong

Last hail
Apr 20, 2020
1.00 in, quarter size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Apr 8, 2020

10 reports on 9 days since 1996 · #477 of 491 Missouri places

Hail map · Koshkonong

Koshkonong Thayer Alton 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; Oregon County is shaded. Open street map

For homeowners

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What the record says about Koshkonong

The latest hail report in and around Koshkonong is from April 20, 2020, 1.00 in (quarter size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Koshkonong logged 7 reports on 6 hail days, about 0.3 reports a year. That is 30% less than the median Missouri town on this site (0.5 a year) and ranks #477 of 491 Missouri cities and towns on this site for all-time reports. Koshkonong accounts for 9% of the 116 reports filed in Oregon County.

0% of reports with a size were 2 inches (hen egg) or larger, against 5% for the median Missouri town on this site. The largest hail on record here is 1.75 in (golf ball) on April 8, 2020 near 3.1 E Koshkonong.

The busiest year was 2020, with 3 reports on 2 days. Hail here peaks in April (60% of reports); 80% fall between April and June.

Reports a year 2006–2025 average

  • Koshkonong 0.3
  • Oregon County 3.0
  • Median Missouri town on this site 0.5

Hail days 2006–2025

  • Koshkonong 6
  • Oregon County 39
  • Median Missouri town on this site 9

Share 2 in or larger of sized reports

  • Koshkonong 0%
  • Oregon County 5%
  • Median Missouri town on this site 5%

Hail over time

0123 1996: 2 reports, largest 1.00 in 1998: 1 reports, largest 0.75 in 2000 2005 2006: 2 reports, largest 1.00 in 2010 2015 2016: 1 reports, largest 0.75 in 2018: 1 reports, largest 1.25 in 2020: 3 reports, largest 1.75 in 2020 2025
Reports per year, 1996–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar April: 6 reports (60%) Apr May: 1 reports (10%) May June: 1 reports (10%) Jun Jul Aug September: 1 reports (10%) Sep October: 1 reports (10%) 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 3 3
2019 0
2018 1 1
2017 0

Largest hail on record

Largest hail reports in Koshkonong
Date Size Location County Time · source
Apr 8, 2020 1.75 ingolf ball 3.1 E Koshkonong Oregon 16:49 local · NCEI
Apr 8, 2020 1.75 ingolf ball 0.89 SE Koshkonong Oregon 16:41 local · NCEI
Jun 14, 2018 1.25 inhalf dollar 1.66 E Koshkonong Oregon 15:29 local · NCEI
Apr 20, 2020 1.00 inquarter Koshkonong Oregon 15:50 local · NCEI
Apr 25, 2006 1.00 inquarter Koshkonong Oregon 15:43 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Koshkonong
Date Size Location County Time · source
Apr 20, 2020 1.00 inquarter Koshkonong Oregon 15:50 local · NCEI
Apr 8, 2020 1.75 ingolf ball 3.1 E Koshkonong Oregon 16:49 local · NCEI
Apr 8, 2020 1.75 ingolf ball 0.89 SE Koshkonong Oregon 16:41 local · NCEI
Jun 14, 2018 1.25 inhalf dollar 1.66 E Koshkonong Oregon 15:29 local · NCEI
Sep 18, 2016 0.75 inpenny 0.89 SE Koshkonong Oregon 14:25 local · NCEI
Apr 30, 2006 0.75 inpenny Koshkonong Oregon 13:17 local · NCEI
Apr 25, 2006 1.00 inquarter Koshkonong Oregon 15:43 local · NCEI
May 2, 1998 0.75 inpenny Koshkonong Oregon 16:50 local · NCEI
Oct 17, 1996 0.75 inpenny Koshkonong Oregon 16:55 local · NCEI
Apr 19, 1996 1.00 inquarter Koshkonong Oregon 20:00 local · NCEI

Hail history near Koshkonong

Questions about hail in Koshkonong

How often does it hail in Koshkonong, Missouri?

10 hail reports have been logged in and within about 5 km (3 miles) of Koshkonong since 1996. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #477 of 491 Missouri places by number of reports.

When is hail season in Koshkonong?

Most reports come in April, May, June. April alone accounts for 60% of all reports.

What is the largest hail recorded in Koshkonong?

1.75 in (golf ball size) on April 8, 2020 near 3.1 E Koshkonong. 0% of reports here were 2 inches or larger.

When did it last hail in Koshkonong?

The most recent report in this data is from April 20, 2020 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Koshkonong since November 3, 2021. The last one was on April 20, 2020.

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.