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Hail dates in Jefferson County, Wisconsin
The National Weather Service has recorded hail in Jefferson County on 21 days since 2016 (51 separate reports, 41 of them quarter-size or larger). The largest stone on record was 2.75" (baseball) on April 14, 2026; the most recent hail was April 14, 2026. Every row below is an official NWS record. Check hail at your exact address, free →
Every hail day in Jefferson County since 2016
One row per day the NWS logged hail somewhere in the county. The narrative names the town; the free check below narrows it to your address.
| Date | Largest hail | Reports | NWS narrative |
|---|---|---|---|
| 2026-04-14 | 2.75" (baseball) | 8 | Trained spotter reports 2.75 inch diameter hail southeast of Watertown. |
| 2025-05-15 | 2.50" (tennis ball) | 2 | — |
| 2025-04-18 | 2.00" (hen egg) | 13 | Hail size measured around 2.34 inches in diameter. |
| 2024-02-08 | 1.00" (quarter) | 1 | — |
| 2023-10-23 | 1.00" (quarter) | 1 | — |
| 2023-08-24 | 1.00" (quarter) | 2 | — |
| 2023-04-19 | 1.50" (ping pong ball) | 2 | — |
| 2023-04-15 | 0.88" (nickel) | 1 | — |
| 2023-04-04 | 1.00" (quarter) | 1 | — |
| 2022-06-13 | 1.75" (golf ball) | 7 | Wind driven golf ball sized hail. Wind gusts around 50 mph. |
| 2021-09-07 | 1.00" (quarter) | 1 | — |
| 2021-08-06 | 1.50" (ping pong ball) | 1 | Hail reported to be 1 to 1.5 inch in diamater. |
| 2021-06-11 | 0.88" (nickel) | 1 | Dime to nickel sized hail on the west side of Fort Atkinson. |
| 2018-05-02 | 0.75" (penny) | 1 | — |
| 2017-08-03 | 0.88" (nickel) | 2 | — |
| 2017-07-10 | 1.00" (quarter) | 1 | — |
| 2017-07-07 | 0.75" (penny) | 1 | — |
| 2017-07-06 | 1.00" (quarter) | 1 | Estimated 50 mph wind with one inch hail falling. |
| 2017-07-01 | 0.75" (penny) | 1 | — |
| 2017-04-10 | 0.75" (penny) | 1 | — |
| 2017-03-23 | 1.00" (quarter) | 2 | — |
Hail days by year
| Year | Hail days | Reports | Largest |
|---|---|---|---|
| 2026 | 1 | 8 | 2.75" (baseball) |
| 2025 | 2 | 15 | 2.50" (tennis ball) |
| 2024 | 1 | 1 | 1.00" (quarter) |
| 2023 | 5 | 7 | 1.50" (ping pong ball) |
| 2022 | 1 | 7 | 1.75" (golf ball) |
| 2021 | 3 | 3 | 1.50" (ping pong ball) |
| 2018 | 1 | 1 | 0.75" (penny) |
| 2017 | 7 | 9 | 1.00" (quarter) |
Damaging wind in Jefferson County
Thunderstorm wind of 58 mph or more (the NWS severe threshold), 61 reports since 2016, strongest 85 mph. 18 tornadoes recorded in the county in the same period. Wind and tornado records are included in the extended report.
| Date | Peak gust | Reports | NWS narrative |
|---|---|---|---|
| 2026-06-10 | 85 mph | 3 | Trained spotter estimates 85 MPH wind gusts to the southeast of Rockdale. |
| 2026-04-13 | 81 mph | 2 | A swath of scattered tree, power line, and structural damage across northern Jefferson County. This included many uprooted and snapped tr… |
| 2017-06-28 | 81 mph | 2 | A large tree was snapped at the trunk as a bow echo moved through northern Jefferson county. |
| 2023-07-28 | 75 mph | 5 | A swath of tree damage in Fort Atkinson. This includes 60-70 trees and branches down in Evergreen Cemetery. Other scattered trees and b… |
| 2017-05-17 | 75 mph | 5 | Trees down on the University of Wisconsin Whitewater campus including near Perkins Stadium on the north side of Whitewater in Jefferson C… |
| 2026-04-14 | 70 mph | 1 | Trained spotter estimates 70 MPH wind gusts. |
| 2018-09-21 | 70 mph | 2 | Portions of a roof blown off a storage building. Numerous large tree branches down throughout Sullivan. |
| 2018-08-26 | 70 mph | 1 | Numerous trees and branches down in Jefferson. |
Was hail recorded at your Jefferson County address? Check free
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address? Enter coordinates as 44.05, -107.31.
Address lookup by the U.S. Census Bureau geocoder. Records: NOAA NCEI Storm Events (final) plus SPC preliminary reports for storms newer than the latest compile — see methodology.
Need it in writing for a claim?
The verification report lists every NWS hail (and, in the extended version, wind and tornado) record within 1, 3 and 10 miles of one address, each linked to its official source, with the disputed date called out in plain English. Adjusters can verify every line.
10-year hail history for one address + the disputed-date finding.
15-year window, wind & tornado records, plus a drafted claim-appeal letter.
Questions
What date did hail last hit Jefferson County?
April 14, 2026, per the NWS Storm Events record. The largest since 2016 was 2.75" (baseball) on April 14, 2026.
Does a county record prove hail at my house?
No. NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. The free check above shows what was recorded near your specific address, with distances.
Nearby counties
Waukesha County, WI (23 mi) · Dodge County, WI (26 mi) · Rock County, WI (27 mi) · Dane County, WI (31 mi) · Walworth County, WI (32 mi) · Washington County, WI (34 mi) · Columbia County, WI (41 mi) · Milwaukee County, WI (42 mi)
See also: Wisconsin hail history by city · all counties