Hail events in Jefferson County, Wisconsin The hail events on record, by date and by year

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).

NCEI has 176 hail events on record for Jefferson County, Wisconsin, from 1955 through 30 Jun 2026.

The newest hail event on record is on 14 Apr 2026.

From 2016 through 2025, NCEI has 43 hail events on record for the county.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

Date of the data: NCEI storm events through 30 Jun 2026. Event types on this page: Hail.

Newest hail events on record

Apr 14 2026

Hail1.00 in, quarter size

4 miles NW of LAKE MILLS

Hail2.75 in, baseball size

2 miles E of WATERTOWN AIRPORT

Hail1.00 in, quarter size

1 mile NW of WATERLOO

Hail1.75 in, golf ball size

1 mile S of WATERTOWN

Hail1.25 in, half dollar size

1 mile SW of WATERTOWN

Hail1.00 in, quarter size

1 mile NW of WATERLOO

Hail1.75 in, golf ball size

2 miles ENE of GRELLTON

Hail1.00 in, quarter size

1 mile SW of WATERTOWN

May 15 2025

Hail2.50 in, tennis ball size

1 mile SE of IXONIA

Hail1.75 in, golf ball size

2 miles NNW of IXONIA ARPT

Apr 18 2025

Hail1.25 in, half dollar size

1 mile S of WATERTOWN AIRPORT

Hail1.00 in, quarter size

3 miles ESE of GRELLTON

Hail1.75 in, golf ball size

1 mile SE of PALMYRA

Hail1.75 in, golf ball size

1 mile SE of PALMYRA

Hail1.25 in, half dollar size

2 miles SSW of COLD SPG

Hail1.25 in, half dollar size

3 miles SSW of FT ATKINSON

Hail2.00 in, hen egg size

2 miles WNW of COLD SPG

Hail1.00 in, quarter size

At FT ATKINSON

Hail0.75 in, penny size

1 mile W of FT ATKINSON

Hail1.75 in, golf ball size

At BUSSEYVILLE

Hail1.75 in, golf ball size

1 mile W of MILFORD

Hail1.00 in, quarter size

1 mile SW of LAKE MILLS

Hail1.00 in, quarter size

3 miles NNW of HOOPERS

Feb 8 2024

Hail1.00 in, quarter size

2 miles E of CAMBRIDGE ARPT

Oct 23 2023

Hail1.00 in, quarter size

1 mile W of WATERLOO

A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. Hail size is in inches, with the object that NCEI names for that size.

Hail events by year

Hail events on record for Jefferson County by year, 1950 to 2026
Decade	Year that ends in 0	Year that ends in 1	Year that ends in 2	Year that ends in 3	Year that ends in 4	Year that ends in 5	Year that ends in 6	Year that ends in 7	Year that ends in 8	Year that ends in 9	All
1950s	0	0	0	0	0	0	1	0	0	0	1
1960s	1	0	0	0	0	1	0	0	0	0	2
1970s	0	0	1	0	0	0	1	1	2	1	6
1980s	1	0	0	0	0	0	0	2	1	0	4
1990s	1	1	1	0	2	6	0	0	2	3	16
2000s	13	7	1	2	9	7	15	6	7	0	67
2010s	6	9	8	1	3	2	0	9	1	0	39
2020s	0	3	7	7	1	15	8 (part of the year)				41

A darker cell has a larger count. The number is in each cell.

Hail events are on record from 1955. The year 2026 has the events through 30 Jun 2026 only.

By month, all years

Jan0 events
Feb1 event
Mar14 events
Apr39 events
May44 events
Jun34 events
Jul14 events
Aug16 events
Sep8 events
Oct6 events
Nov0 events
Dec0 events

Magnitudes on record

Hail events on record for Jefferson County by hail size
Hail size	Size in words	Events
under 1 in	pea to quarter	77
1 to 1.74 in	quarter to golf ball	59
1.75 to 2.74 in	golf ball to baseball	35
2.75 to 3.99 in	baseball to softball	3
4 in and larger	softball and larger	2

When listing hail size under Magnitude, e.g., 2.25 in., the hail size is given in inches and hundredths of inches. These values are assigned a size in inches from their appearance.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

An event without a size in the record is not in this table.

Beside the other counties

Hail events on record: Jefferson County beside the total of the counties of Wisconsin and of the United States
Measure	Jefferson	All counties of Wisconsin	All counties of the United States
Hail events, 1955 to 2026	176	9,251	423,723
Events for each 100 square miles	31.6	17.1	12.0
Events for each 10,000 residents	20.7	15.7	12.8

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.

More hail events on record

Hail events on record for Jefferson County, newest first, without the 25 newest events above
Date	Event type	Magnitude	Damage estimate	On record for
24 Aug 2023	Hail	1.00 in	none	County
24 Aug 2023	Hail	1.00 in	none	County
19 Apr 2023	Hail	1.50 in	none	County
19 Apr 2023	Hail	1.00 in	none	County
15 Apr 2023	Hail	0.88 in	none	County
4 Apr 2023	Hail	1.00 in	none	County
13 Jun 2022	Hail	1.75 in	none	County
13 Jun 2022	Hail	1.75 in	none	County
13 Jun 2022	Hail	1.75 in	none	County
13 Jun 2022	Hail	1.25 in	none	County
13 Jun 2022	Hail	1.75 in	none	County
13 Jun 2022	Hail	1.25 in	none	County
13 Jun 2022	Hail	1.75 in	none	County
7 Sep 2021	Hail	1.00 in	none	County
6 Aug 2021	Hail	1.50 in	$8 thousand	County
11 Jun 2021	Hail	0.88 in	none	County
2 May 2018	Hail	0.75 in	none	County
3 Aug 2017	Hail	0.75 in	none	County
3 Aug 2017	Hail	0.88 in	none	County
10 Jul 2017	Hail	1.00 in	none	County
7 Jul 2017	Hail	0.75 in	none	County
6 Jul 2017	Hail	1.00 in	none	County
1 Jul 2017	Hail	0.75 in	none	County
10 Apr 2017	Hail	0.75 in	none	County
23 Mar 2017	Hail	0.75 in	none	County
23 Mar 2017	Hail	1.00 in	none	County
3 May 2015	Hail	1.00 in	none	County
3 May 2015	Hail	0.88 in	none	County
18 Jun 2014	Hail	0.88 in	none	County
12 May 2014	Hail	1.75 in	none	County
12 May 2014	Hail	1.50 in	none	County
15 Jun 2013	Hail	1.00 in	none	County
3 May 2012	Hail	1.25 in	none	County
3 May 2012	Hail	1.00 in	none	County
3 May 2012	Hail	1.25 in	none	County
3 May 2012	Hail	1.25 in	none	County
3 May 2012	Hail	1.00 in	none	County
3 May 2012	Hail	0.88 in	none	County
3 May 2012	Hail	1.00 in	none	County
1 May 2012	Hail	1.75 in	none	County
8 Jun 2011	Hail	0.75 in	none	County
22 May 2011	Hail	1.00 in	none	County
22 May 2011	Hail	1.75 in	none	County
22 May 2011	Hail	1.25 in	none	County
11 May 2011	Hail	1.75 in	none	County
11 May 2011	Hail	4.25 in	none	County
11 May 2011	Hail	2.00 in	none	County
11 May 2011	Hail	2.75 in	none	County
3 Apr 2011	Hail	0.88 in	none	County
6 Sep 2010	Hail	0.88 in	none	County
21 Jun 2010	Hail	1.00 in	none	County
21 Jun 2010	Hail	1.50 in	$15 thousand	County
2 Jun 2010	Hail	1.00 in	none	County
2 Jun 2010	Hail	1.75 in	none	County
2 Jun 2010	Hail	1.00 in	none	County
2 Jul 2008	Hail	1.00 in	none	County
14 Jun 2008	Hail	1.00 in	none	County
14 Jun 2008	Hail	0.75 in	none	County
7 Jun 2008	Hail	0.75 in	none	County
7 Jun 2008	Hail	1.00 in	none	County
7 Jun 2008	Hail	0.88 in	none	County
5 Jun 2008	Hail	0.88 in	none	County
9 Jul 2007	Hail	1.00 in	none	County
9 Jul 2007	Hail	0.75 in	none	County
30 Apr 2007	Hail	0.75 in	none	County
21 Mar 2007	Hail	0.75 in	none	County
21 Mar 2007	Hail	0.75 in	none	County
21 Mar 2007	Hail	0.75 in	none	County
2 Oct 2006	Hail	0.75 in	none	County
2 Oct 2006	Hail	0.75 in	none	County
2 Oct 2006	Hail	0.75 in	none	County
2 Oct 2006	Hail	0.75 in	none	County
2 Oct 2006	Hail	0.75 in	none	County
30 Sep 2006	Hail	0.75 in	none	County
25 Aug 2006	Hail	0.75 in	none	County
24 Aug 2006	Hail	0.75 in	none	County
24 Aug 2006	Hail	0.75 in	none	County
17 May 2006	Hail	0.75 in	none	County
13 Apr 2006	Hail	2.50 in	none	County
13 Apr 2006	Hail	4.25 in	$4.4 million	County
13 Apr 2006	Hail	2.50 in	$4.4 million	County
13 Apr 2006	Hail	1.50 in	none	County
13 Apr 2006	Hail	2.00 in	$4.4 million	County
18 Aug 2005	Hail	1.00 in	none	County
5 Jun 2005	Hail	0.75 in	none	County
19 May 2005	Hail	0.75 in	none	County
6 May 2005	Hail	0.75 in	none	County
6 May 2005	Hail	0.88 in	none	County
6 May 2005	Hail	1.00 in	none	County
30 Mar 2005	Hail	0.88 in	none	County
23 Jun 2004	Hail	0.75 in	none	County
23 Jun 2004	Hail	0.88 in	none	County
23 Jun 2004	Hail	1.75 in	$10 thousand	County
23 May 2004	Hail	0.75 in	none	County
23 May 2004	Hail	0.75 in	none	County
7 May 2004	Hail	0.75 in	none	County
1 Mar 2004	Hail	0.75 in	none	County
1 Mar 2004	Hail	1.00 in	none	County
1 Mar 2004	Hail	0.75 in	none	County
3 Aug 2003	Hail	0.75 in	none	County
31 Jul 2003	Hail	0.75 in	none	County
9 Sep 2002	Hail	0.75 in	none	County
3 Sep 2001	Hail	0.75 in	none	County
30 Jun 2001	Hail	0.75 in	none	County
14 May 2001	Hail	0.88 in	none	County
14 May 2001	Hail	1.50 in	none	County
14 May 2001	Hail	3.75 in	$300 thousand	County
14 May 2001	Hail	0.75 in	none	County
3 May 2001	Hail	0.75 in	none	County
11 Sep 2000	Hail	0.88 in	none	County
2 Jul 2000	Hail	1.75 in	$150 thousand	County
2 Jul 2000	Hail	2.25 in	$175 thousand	County
30 Jun 2000	Hail	0.88 in	none	County
1 Jun 2000	Hail	0.75 in	none	County
18 May 2000	Hail	1.00 in	none	County
18 May 2000	Hail	1.00 in	none	County
11 May 2000	Hail	0.75 in	none	County
11 May 2000	Hail	0.75 in	none	County
8 May 2000	Hail	0.75 in	none	County
8 May 2000	Hail	0.75 in	none	County
8 Mar 2000	Hail	0.75 in	none	County
8 Mar 2000	Hail	0.75 in	none	County
28 Jun 1999	Hail	0.75 in	none	County
28 Jun 1999	Hail	0.88 in	none	County
16 May 1999	Hail	1.00 in	none	County
24 Aug 1998	Hail	2.00 in	none	County
20 Jul 1998	Hail	0.75 in	none	County
9 Aug 1995	Hail	2.50 in	none	County
9 Aug 1995	Hail	1.75 in	none	County
9 Aug 1995	Hail	0.75 in	none	County
27 Jul 1995	Hail	1.00 in	none	County
7 Jun 1995	Hail	0.88 in	none	County
7 Jun 1995	Hail	1.00 in	none	County
9 Sep 1994	Hail	0.75 in	none	County
23 Mar 1994	Hail	1.75 in	none	County
19 Jul 1992	Hail	1.00 in	none	County
27 Mar 1991	Hail	2.00 in	none	County
13 Mar 1990	Hail	1.75 in	none	County
5 Apr 1988	Hail	0.75 in	none	County
21 May 1987	Hail	2.00 in	none	County
21 May 1987	Hail	0.75 in	none	County
5 Jun 1980	Hail	0.75 in	none	County
5 Aug 1979	Hail	1.00 in	none	County
3 Apr 1978	Hail	1.00 in	none	County
3 Apr 1978	Hail	0.75 in	none	County
2 Apr 1977	Hail	1.75 in	none	County
27 Aug 1976	Hail	0.75 in	none	County
17 Sep 1972	Hail	2.50 in	none	County
11 Apr 1965	Hail	0.75 in	none	County
2 Jul 1960	Hail	0.75 in	none	County
3 Apr 1956	Hail	1.00 in	none	County

The table has all other events on record. A damage figure is an estimate in the NCEI record.

Official channels

NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
National Weather Service: Milwaukee/Sullivan, WI (opens in a new tab)The forecast office that issues the weather warnings for the county.
FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.

These links open the pages of the agencies. The site checked the links on 2 Oct 2026.

Cite this page

County Hazards. "Hail events on record for Jefferson County, Wisconsin". https://countyhazards.com/county/wi/jefferson/hail/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on 2 Oct 2026.

Questions

Which month has the most hail events on record for Jefferson County?: May has 44 of the 176 hail events on record from 1955 through 30 Jun 2026.
How many hail events are on record for Wisconsin?: NCEI has 9,265 hail events on record for Wisconsin from 1955 through 30 Jun 2026. That count has every forecast zone of the state.
How does Jefferson County compare with the other counties of Wisconsin?: The counties of Wisconsin have 17.1 hail events for each 100 square miles. Jefferson County has 31.6.
How large is the hail on record for Jefferson County?: 40 hail events have a size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.