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Hail dates in Rock County, Wisconsin
The National Weather Service has recorded hail in Rock County on 28 days since 2016 (67 separate reports, 56 of them quarter-size or larger). The largest stone on record was 2.75" (baseball) on April 18, 2025; the most recent hail was June 24, 2026. Every row below is an official NWS record. Check hail at your exact address, free →
Every hail day in Rock 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 |
|---|---|---|---|
| 2026-06-24 | 1.25" (half dollar) | 1 | — |
| 2026-04-17 | 2.00" (hen egg) | 4 | — |
| 2026-04-02 | 1.50" (ping pong ball) | 4 | — |
| 2026-03-10 | 1.00" (quarter) | 1 | — |
| 2025-08-16 | 1.50" (ping pong ball) | 7 | Ping pong ball hail on the west side of Janesville. |
| 2025-04-18 | 2.75" (baseball) | 11 | Picture provided. |
| 2024-06-25 | 1.25" (half dollar) | 5 | At least one hail stone around half dollar size. |
| 2024-05-07 | 0.75" (penny) | 1 | — |
| 2024-03-04 | 1.50" (ping pong ball) | 3 | Photo of one inch hail included in report. |
| 2024-02-08 | 0.75" (penny) | 1 | — |
| 2023-04-05 | 0.88" (nickel) | 1 | — |
| 2023-04-04 | 1.25" (half dollar) | 1 | — |
| 2022-09-20 | 0.88" (nickel) | 1 | — |
| 2022-07-23 | 2.00" (hen egg) | 5 | — |
| 2022-07-05 | 1.00" (quarter) | 3 | A couple reports of 1 inch hail in Orfordville during this time. |
| 2021-09-07 | 1.00" (quarter) | 3 | — |
| 2021-08-06 | 1.00" (quarter) | 1 | — |
| 2020-07-07 | 0.88" (nickel) | 1 | — |
| 2020-05-23 | 1.00" (quarter) | 1 | — |
| 2019-10-01 | 1.00" (quarter) | 1 | — |
| 2019-06-01 | 1.00" (quarter) | 1 | — |
| 2018-05-02 | 1.50" (ping pong ball) | 3 | Wind driven hail damaging siding, breaking windows, and tearing window screens in the Cedar Crest neighborhood and surrounding neighborhoods. |
| 2017-08-10 | 1.00" (quarter) | 1 | — |
| 2017-05-17 | 1.00" (quarter) | 2 | — |
| 2016-08-18 | 0.75" (penny) | 1 | — |
| 2016-07-23 | 1.00" (quarter) | 1 | — |
| 2016-05-28 | 0.88" (nickel) | 1 | — |
| 2016-03-15 | 1.00" (quarter) | 1 | — |
Hail days by year
| Year | Hail days | Reports | Largest |
|---|---|---|---|
| 2026 | 4 | 10 | 2.00" (hen egg) |
| 2025 | 2 | 18 | 2.75" (baseball) |
| 2024 | 4 | 10 | 1.50" (ping pong ball) |
| 2023 | 2 | 2 | 1.25" (half dollar) |
| 2022 | 3 | 9 | 2.00" (hen egg) |
| 2021 | 2 | 4 | 1.00" (quarter) |
| 2020 | 2 | 2 | 1.00" (quarter) |
| 2019 | 2 | 2 | 1.00" (quarter) |
| 2018 | 1 | 3 | 1.50" (ping pong ball) |
| 2017 | 2 | 3 | 1.00" (quarter) |
| 2016 | 4 | 4 | 1.00" (quarter) |
Damaging wind in Rock County
Thunderstorm wind of 58 mph or more (the NWS severe threshold), 80 reports since 2016, strongest 85 mph. 14 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 | 5 | Trained spotter estimates 85 MPH wind gusts from observations and home weather station. |
| 2023-04-05 | 81 mph | 2 | A NWS storm survey concluded that straight line winds up to 80 mph caused a path of tree damage from the west side of Beloit through the … |
| 2022-03-05 | 81 mph | 1 | Eighteen 40 foot pine trees sheared off about 15 feet above the ground. Several other trees downed nearby. A tree landed on a garage pier… |
| 2017-05-17 | 81 mph | 3 | Walls collapsed on several older farm buildings. |
| 2017-03-06 | 81 mph | 4 | A horse barn destroyed with debris strewn over 200 yards. A large pine tree was uprooted and minor damage to the home. |
| 2025-07-11 | 76 mph | 2 | Trees down across a roadway. |
| 2025-03-14 | 75 mph | 7 | Mesonet Station WI089 located at I-39/90 at State Highway 26. |
| 2020-11-10 | 75 mph | 3 | Power poles knocked down onto portions of highway 14 near Janesville. |
Was hail recorded at your Rock County address? Check free
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against every hail event the National Weather Service recorded in the last 10 years and show you
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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 Rock County?
June 24, 2026, per the NWS Storm Events record. The largest since 2016 was 2.75" (baseball) on April 18, 2025.
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
Winnebago County, IL (27 mi) · Jefferson County, WI (27 mi) · Green County, WI (28 mi) · Walworth County, WI (29 mi) · Dane County, WI (31 mi) · Boone County, IL (31 mi) · Stephenson County, IL (36 mi) · Waukesha County, WI (43 mi)
See also: Wisconsin hail history by city · all counties