Data current as of 2026-10-16 · Sourced from NOAA Storm Events
Over the past five years, the National Oceanic and Atmospheric Administration has recorded 107 hail storms within 25 miles of Beaver Dam, WI. Of those, 83 produced hail at least quarter-size — the threshold most insurance carriers consider potentially damaging to asphalt shingles. The largest reported hail in this window was egg-sized, which can fracture shingle mat and dent metal flashing on contact. 2026 was the most active year on record locally, with 53 documented hail events.
Check Hail History for a Specific Address in Beaver Dam| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 7 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 12 events | Ping pong-size, granule loss and bruising common |
| Significant | 64 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 24 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 53 events |
| 2025 | 26 events |
| 2024 | 8 events |
| 2023 | 8 events |
| 2022 | 12 events |
2026 was the busiest hail year on record locally for Beaver Dam, with 53 documented events inside the 25-mile radius. Storm activity in Beaver Dam typically peaks in spring and early summer, when the jet stream pushes Gulf moisture into the area and supercell thunderstorms become more frequent.
| Date | Location | Severity | Size | NOAA Comments |
|---|---|---|---|---|
| 2026-09-04 | Mayville, WI | Severe | 1.75" | Relay report from NWSChat. |
| 2026-09-04 | 1 W Mayville, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-08-09 | 5 SW Kingston, WI | Moderate | 0.70" | — |
| 2026-07-27 | Juneau, WI | Significant | 1.00" | Two reports of one inch hail in Juneau. |
| 2026-07-27 | Neosho, WI | Destructive | 2.75" | Delayed Report - Photos of hail around 2.75 inch diameter received on social media. Time of 11:05 AM was estimated from radar. |
| 2026-07-27 | 1 W Mayville, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.) Time confirmed from radar. |
| 2026-07-27 | Mayville, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.) Time confirmed from radar. |
| 2026-07-01 | 5 SW Kingston, WI | Moderate | 0.70" | — |
| 2026-07-01 | 4 S Rosendale, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-07-01 | 4 S Rosendale, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-07-01 | Markesan, WI | Significant | 1.00" | From social media. Time est from radar. |
| 2026-07-01 | 4 S Rosendale, WI | Destructive | 2.50" | Size est from social media pics sent to local media shared by County EM. Time est from radar. |
| 2026-07-01 | Brandon, WI | Severe | 1.50" | Size est from social media pics sent to local media shared by County EM. Time est from radar. |
| 2026-06-25 | 4 E Iron Ridge, WI | Significant | 1.00" | Delayed Report: Report from mPING: Quarter (1.00 in.). |
| 2026-06-24 | HERMAN CENTER, WI | Significant | 1.00" | — |
| 2026-06-24 | 4 S Waupun, WI | Significant | 1.00" | Delayed Report: Report from mPING: Quarter (1.00 in.). |
| 2026-06-24 | WAUPUN ARPT, WI | Significant | 1.00" | — |
| 2026-04-17 | Watertown, WI | Significant | 1.00" | — |
| 2026-04-14 | 2 S Marshall, WI | Destructive | 2.00" | — |
| 2026-04-14 | MARSHALL, WI | Destructive | 2.00" | Trained spotter reports 2 inch diameter hail near Marshall. |
NOAA has recorded 95 high-wind events within 25 miles of Beaver Dam, WI in the past five years. Of those, 95 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 81 mph.
| Severity | Count |
|---|---|
| Severe | 29 events |
| Significant | 66 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-09-02 | 2 WNW Fairwater, WI | 59 | Significant | Personal Wx Station Report. |
| 2026-08-09 | 1 S Kingston, WI | 50 | Significant | — |
| 2026-07-27 | Juneau, WI | 65 | Severe | Trained spotter estimates 65 MPH wind gusts. Time confirmed from radar data. |
| 2026-07-09 | 5 SW Kingston, WI | 50 | Significant | Estimated 50 mph wind gust reported in Dalton, WI. |
| 2026-07-02 | 3 WSW Watertown, WI | 55 | Significant | Private weather statement measures 55 MPH wind gust. Time confirmed from radar. |
| 2026-06-25 | 1 WNW Mayville, WI | 58 | Significant | Delayed Report: 58 mph wind gust measured just outside of Mayville. Wall cloud reported as well. |
| 2026-06-24 | MAYVILLE, WI | 58 | Significant | — |
| 2026-06-24 | FAIRWATER, WI | 60 | Significant | A large tree branch was reported down near the intersection of Elm and West Streets. |
| 2026-06-10 | DEANSVILLE, WI | 60 | Significant | Public report of large downed tree branches. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | BEAVER DAM, WI | 73 | Severe | Public report of a 73 MPH wind gust from a home weather station. |
| 2026-06-10 | SOUTH BEAVER DAM, WI | 81 | Severe | Photos of a destroyed barn outside of Beaver Dam. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | 2 E Beaver Dam, WI | 73 | Severe | Home wx station. |
| 2026-06-10 | WATERTOWN AIRPORT, WI | 60 | Significant | Public report of a 60 MPH wind gust as measured by a home weather station. |
| 2026-06-10 | REESEVILLE, WI | 60 | Significant | Fire and rescue reports a fallen tree on powerlines. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | 3 SW Watertown, WI | 60 | Significant | Home wx station. |
| 2026-06-10 | HARTFORD, WI | 60 | Significant | Public report of a downed tree near downtown Hartford. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | MARKESAN, WI | 64 | Severe | Public report and photos of a large tree trunk snapped. Wind gust estimated from radar data, nearby observations and damage. |
| 2026-06-10 | EAST WAUPUN, WI | 81 | Severe | Emergency management reports damage to several structures in downtown Horicon. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-04-17 | RICHWOOD, WI | 64 | Severe | A barn wall was blown down. |
| 2026-04-14 | 3 E Neosho, WI | 60 | Significant | Trained spotter estimates 60 MPH winds with dozens of trees downed, uprooted, or snapped. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Beaver Dam was on September 4, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Beaver Dam averages roughly 21 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 83 of the 107 events recorded over the last five years.
The largest documented hail near Beaver Dam in the last five years was egg-sized. Most Beaver Dam-area hail falls in the marble-to-quarter range, with destructive storms (egg-size or larger) appearing roughly once every few years.
Most homeowners insurance policies in WI cover hail damage to roofs, siding, and gutters under the dwelling and other-structures coverage. Coverage typically requires the damage to be tied to a verifiable storm date — which is where the NOAA hail history above (and a HAAG-style test square validation) becomes important for the claim file.
Use the HailCheck address search to enter any street address in or near Beaver Dam. HailCheck returns every NOAA hail event within a configurable radius, along with severity bands, dates, and storm narratives for Pro members.
If your property in or near Beaver Dam took on hail during one of the storms above, the standard process for documenting damage is a 10×10 foot test square inspection. A HAAG-trained reviewer counts impact indicators — granule displacement, mat fractures, and bruising — within the marked square and produces a PASS or FAIL document for the claim file.
HailCheck offers a $99 photo-based HAAG-style test square validation. You submit photos from the field, our reviewer evaluates the impact indicators and cross-references the NOAA storm dates listed above, and a written PASS/FAIL determination is returned within one business day. We do not send anyone to the roof — the validation is built around the photos you submit.
Learn About $99 HAAG-Style ValidationBeaver Dam sits east of the traditional hail alley, where hail events are less frequent than the central plains but tend to be associated with strong squall lines and tropical systems. Local roof systems are less commonly hardened for hail, which can mean even moderate impacts produce claim-worthy damage.