Hail history for Watertown, Wisconsin
NOAA hail reports in and within about 5 km (3 miles) of Watertown since 1956, with preliminary reports to November 3, 2026.
Readout · Watertown
- Last hail
- Apr 14, 2026
- 1.00 in, quarter size
- Hail days, last 5 years
- 5
- since Nov 3, 2021 · 13 reports
- Largest ever
- 3.75 in
- teacup · May 14, 2001
42 reports on 30 days since 1956 · #12 of 271 Wisconsin places
Hail map · Watertown
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Watertown
The latest hail report in and around Watertown is from April 14, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 5 separate hail days; the biggest stones in that time were 2.75 in on April 14, 2026.
Over the 20 years 2006–2025, Watertown logged 24 reports on 20 hail days, about 1.2 reports a year. That is 2.7 times the median Wisconsin town on this site (0.5 a year) and ranks #12 of 271 Wisconsin cities and towns on this site for all-time reports. Watertown accounts for 24% of the 177 reports filed in Jefferson County.
7% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Wisconsin town on this site. The largest hail on record here is 3.75 in (teacup) on May 14, 2001 near Watertown.
Reports were down 15% in 2016–2025 (11) compared with 2006–2015 (13). The busiest year was 2026, with 7 reports on 1 day. Hail here peaks in April (43% of reports); 83% fall between April and June.
Reports a year 2006–2025 average
- Watertown 1.2
- Jefferson County 5.0
- Median Wisconsin town on this site 0.5
Hail days 2006–2025
- Watertown 20
- Jefferson County 46
- Median Wisconsin town on this site 7
Share 2 in or larger of sized reports
- Watertown 7%
- Jefferson County 10%
- Median Wisconsin town on this site 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 7 | 7 | |||||||||||
| 2025 | 3 | 3 | |||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | 2 | ||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 1 | 1 | 2 | ||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 2 | 2 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 14, 2026 | 7 | 2.75 in | — |
| Apr 18, 2025 | 3 | 1.25 in | — |
| Oct 23, 2023 | 1 | 1.00 in | — |
| Apr 15, 2023 | 1 | 0.88 in | — |
| Jun 13, 2022 | 1 | 1.25 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| May 14, 2001 | 3.75 inteacup | Watertown | Jefferson | $300K | 11:32 local · NCEI |
| Apr 14, 2026 | 2.75 inbaseball | 1.51 E Watertown Airport | Jefferson | — | 16:51 local · NCEI |
| May 14, 2001 | 2.50 intennis ball | Watertown | Dodge | $150K | 11:28 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 0.69 S Watertown | Jefferson | — | 16:52 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 2.13 ENE Grellton | Jefferson | — | 16:48 local · NCEI |
Size of every report
- Under 1 in 17 40%
- 1–2 in 22 52%
- 2 in + 3 7%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 14, 2026 | 1.00 inquarter | 1.01 W Watertown | Dodge | 17:19 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 0.69 S Watertown | Jefferson | 16:52 local · NCEI |
| Apr 14, 2026 | 2.75 inbaseball | 1.51 E Watertown Airport | Jefferson | 16:51 local · NCEI |
| Apr 14, 2026 | 1.25 inhalf dollar | 0.86 SW Watertown | Jefferson | 16:50 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 2.13 ENE Grellton | Jefferson | 16:48 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.86 SW Watertown | Jefferson | 16:47 local · NCEI |
| Apr 14, 2026 | 1.00 inquarter | 0.86 NW Watertown | Dodge | 16:46 local · NCEI |
| Apr 18, 2025 | 1.00 inquarter | 0.86 NW Watertown | Dodge | 06:52 local · NCEI |
| Apr 18, 2025 | 1.00 inquarter | 2.61 ESE Grellton | Jefferson | 06:50 local · NCEI |
| Apr 18, 2025 | 1.25 inhalf dollar | 0.69 S Watertown Airport | Jefferson | 06:50 local · NCEI |
| Oct 23, 2023 | 1.00 inquarter | 1.22 SE Richwood | Dodge | 15:05 local · NCEI |
| Apr 15, 2023 | 0.88 innickel | 2.01 E Watertown | Jefferson | 13:59 local · NCEI |
Hail history near Watertown
- Johnson Creek 13 km · 11
- Lowell 17 km · 10
- Lake Mills 19 km · 28
- Oconomowoc 21 km · 38
- Waterloo 21 km · 18
- Jefferson 22 km · 13
- Summit 26 km · 17
- Marshall 27 km · 13
Questions about hail in Watertown
How often does it hail in Watertown, Wisconsin?
42 hail reports have been logged in and within about 5 km (3 miles) of Watertown since 1956. Over the 20 years 2006–2025 that averages 1.2 reports a year. That ranks #12 of 271 Wisconsin places by number of reports.
When is hail season in Watertown?
Most reports come in April, May, June. April alone accounts for 43% of all reports.
What is the largest hail recorded in Watertown?
3.75 in (teacup size) on May 14, 2001 near Watertown. 7% of reports here were 2 inches or larger.
When did it last hail in Watertown?
The most recent report in this data is from April 14, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Watertown had in the last five years?
5 separate days with hail reports since November 3, 2021, adding up to 13 reports. The most recent was April 14, 2026.
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.