Hail history for Cottage Grove, Wisconsin
NOAA hail reports in and within about 5 km (3 miles) of Cottage Grove since 1982, with preliminary reports to November 3, 2026.
Readout · Cottage Grove
- Last hail
- Apr 14, 2026
- 2.50 in, tennis ball size
- Hail days, last 5 years
- 5
- since Nov 3, 2021 · 9 reports
- Largest ever
- 3.00 in
- teacup · Apr 13, 2006
17 reports on 12 days since 1982 · #99 of 271 Wisconsin places
Hail map · Cottage Grove
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
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 Cottage Grove is from April 14, 2026. A local roofer can check and document it at no cost.
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What the record says about Cottage Grove
The latest hail report in and around Cottage Grove is from April 14, 2026, 2.50 in (tennis ball size). Since November 3, 2021 there have been 5 separate hail days; the biggest stones in that time were 2.50 in on April 14, 2026.
Over the 20 years 2006–2025, Cottage Grove logged 12 reports on 10 hail days, about 0.6 reports a year. That is 33% more than the median Wisconsin town on this site (0.5 a year) and ranks #99 of 271 Wisconsin cities and towns on this site for all-time reports. Cottage Grove accounts for 3% of the 555 reports filed in Dane County.
18% 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 3.00 in (teacup) on April 13, 2006 near Cottage Grove.
Reports were down 29% in 2016–2025 (5) compared with 2006–2015 (7). The busiest year was 2026, with 4 reports on 1 day. Hail here peaks in April (35% of reports); 82% fall between April and June.
Reports a year 2006–2025 average
- Cottage Grove 0.6
- Dane County 17.2
- Median Wisconsin town on this site 0.5
Hail days 2006–2025
- Cottage Grove 10
- Dane County 89
- Median Wisconsin town on this site 7
Share 2 in or larger of sized reports
- Cottage Grove 18%
- Dane County 12%
- 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 | 4 | 4 | |||||||||||
| 2025 | 1 | 1 | 2 | ||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 2 | 1 | 3 | ||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 14, 2026 | 4 | 2.50 in | — |
| May 15, 2025 | 1 | 1.75 in | — |
| Apr 18, 2025 | 1 | 1.00 in | — |
| Sep 20, 2022 | 1 | 0.88 in | — |
| Jun 13, 2022 | 2 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Apr 13, 2006 | 3.00 inteacup | Cottage Grove | Dane | $5.5 million | 20:45 local · NCEI |
| Apr 14, 2026 | 2.50 intennis ball | 0.69 N Cottage Grove | Dane | — | 16:35 local · NCEI |
| Apr 14, 2026 | 2.50 intennis ball | 0.5 W Seminary Spgs | Dane | — | 16:31 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 1.01 W Cottage Grove Arpt | Dane | — | 16:34 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 1.71 NW Cottage Grove Arpt | Dane | — | 16:32 local · NCEI |
Size of every report
- Under 1 in 5 29%
- 1–2 in 9 53%
- 2 in + 3 18%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 14, 2026 | 2.50 intennis ball | 0.69 N Cottage Grove | Dane | 16:35 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 1.01 W Cottage Grove Arpt | Dane | 16:34 local · NCEI |
| Apr 14, 2026 | 1.75 ingolf ball | 1.71 NW Cottage Grove Arpt | Dane | 16:32 local · NCEI |
| Apr 14, 2026 | 2.50 intennis ball | 0.5 W Seminary Spgs | Dane | 16:31 local · NCEI |
| May 15, 2025 | 1.75 ingolf ball | 0.5 W Seminary Spgs | Dane | 15:28 local · NCEI |
| Apr 18, 2025 | 1.00 inquarter | 1.22 SE Cottage Grove | Dane | 06:31 local · NCEI |
| Sep 20, 2022 | 0.88 innickel | 0.69 N Cottage Grove | Dane | 13:30 local · NCEI |
| Jun 13, 2022 | 1.50 inping pong ball | 2.45 SE Cottage Grove Arpt | Dane | 14:10 local · NCEI |
| Jun 13, 2022 | 1.25 inhalf dollar | 0.69 S Cottage Grove Arpt | Dane | 14:08 local · NCEI |
| May 11, 2011 | 0.88 innickel | Cottage Grove | Dane | 15:54 local · NCEI |
| May 11, 2011 | 1.00 inquarter | 1.8 SW Cottage Grove | Dane | 15:50 local · NCEI |
| Jun 6, 2010 | 0.75 inpenny | 5 SE Madison Truax Airport | Dane | 17:20 local · NCEI |
Hail history near Cottage Grove
Questions about hail in Cottage Grove
How often does it hail in Cottage Grove, Wisconsin?
17 hail reports have been logged in and within about 5 km (3 miles) of Cottage Grove since 1982. Over the 20 years 2006–2025 that averages 0.6 reports a year. That ranks #99 of 271 Wisconsin places by number of reports.
When is hail season in Cottage Grove?
Most reports come in April, May, June. April alone accounts for 35% of all reports.
What is the largest hail recorded in Cottage Grove?
3.00 in (teacup size) on April 13, 2006 near Cottage Grove. 18% of reports here were 2 inches or larger.
When did it last hail in Cottage Grove?
The most recent report in this data is from April 14, 2026 (2.50 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Cottage Grove had in the last five years?
5 separate days with hail reports since November 3, 2021, adding up to 9 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.