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 233 hail storms within 25 miles of Waukesha, WI. Of those, 169 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. 2025 was the most active year on record locally, with 59 documented hail events.
Check Hail History for a Specific Address in Waukesha| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 14 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 28 events | Ping pong-size, granule loss and bruising common |
| Significant | 127 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 64 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 58 events |
| 2025 | 59 events |
| 2024 | 47 events |
| 2023 | 36 events |
| 2022 | 33 events |
2025 was the busiest hail year on record locally for Waukesha, with 59 documented events inside the 25-mile radius. Storm activity in Waukesha 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 |
|---|---|---|---|---|
| 2026-08-10 | 1 SW Mukwonago, WI | Significant | 1.00" | — |
| 2026-08-10 | 2 E Mukwonago, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-08-10 | 1 W Hales Corners, WI | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-07-27 | Eagle Lake, WI | Significant | 1.00" | — |
| 2026-07-27 | Waterford, WI | Significant | 1.00" | — |
| 2026-07-27 | Browns Lake, WI | Significant | 1.00" | — |
| 2026-07-27 | 1 W Oconomowoc, WI | Destructive | 2.50" | — |
| 2026-07-27 | 1 SW Lac La Belle, WI | Significant | 1.25" | — |
| 2026-07-27 | 1 ESE Lac La Belle, WI | Severe | 1.75" | — |
| 2026-07-27 | 1 NE Oconomowoc, WI | Destructive | 2.00" | — |
| 2026-07-27 | 1 S Delafield, WI | Significant | 1.00" | — |
| 2026-07-03 | 3 ESE Jackson, WI | Significant | 1.00" | Trained spotter reports 1 inch diameter hail in Jackson. |
| 2026-04-21 | 4 SE Wind Lake, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-04-21 | UNION GROVE HRNR ARP, WI | Significant | 1.00" | — |
| 2026-04-21 | Greenfield, WI | Significant | 1.00" | Observation with pictures. |
| 2026-04-21 | 6 E Wind Lake, WI | Moderate | 0.88" | — |
| 2026-04-21 | GREENFIELD, WI | Significant | 1.00" | Pictures provided. |
| 2026-04-21 | NORTH CAPE, WI | Moderate | 0.88" | — |
| 2026-04-21 | (MKE)MITCHELL APT MI, WI | Significant | 1.00" | — |
| 2026-04-21 | 2 WSW Saint Francis, WI | Significant | 1.00" | Milwaukee Airport Observer pictures. |
NOAA has recorded 125 high-wind events within 25 miles of Waukesha, WI in the past five years. Of those, 123 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 82 mph.
| Severity | Count |
|---|---|
| Severe | 30 events |
| Significant | 93 events |
| Moderate | 2 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-08-18 | 2 ENE Butler, WI | 56 | Significant | AWOS station KMWC Milwaukee Timmerman Airport reports 56 mph winds during thunderstorm. |
| 2026-07-27 | 2 SW North Prairie, WI | 62 | Significant | 62 MPH wind gust measured via home weather station. Time confirmed from radar data. |
| 2026-07-03 | 2 SSE Eagle Lake, WI | 65 | Severe | Private Weather Station. |
| 2026-07-03 | 1 SE Menomonee Falls, WI | 64 | Severe | Private weather station measures 64 MPH wind gust. Time confirmed from radar. |
| 2026-06-11 | 2 WSW Saint Francis, WI | 53 | Significant | Mitchell airport. |
| 2026-06-11 | 2 NNW Saint Francis, WI | 40 | Moderate | Port of Milwaukee C-Man MLWW3. |
| 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 | LANNON, WI | 60 | Significant | Public report a small tree snapped half way up. Wind gust estimated from radar data and damage. |
| 2026-04-27 | 2 NW Burlington, WI | 51 | Significant | Burlington Municipal Airport. |
| 2026-04-27 | KMKE Airport ASOS, WI | 77 | Severe | ASOS Peak Wind Report, 120-deg, 67-kt, 1832-zulu. |
| 2026-04-27 | 2 WSW Saint Francis, WI | 70 | Severe | More than 200 calls for downed trees and branches in Milwaukee. Some trees blocking roads, and resting on homes and vehicles. |
| 2026-04-27 | 2 ENE Shorewood, WI | 43 | Moderate | South southeast wind gust at 37 kt. |
| 2026-04-27 | 2 NNW Saint Francis, WI | 51 | Significant | Southeast wind gust to 44 kt. |
| 2026-04-17 | EAST TROY, WI | 64 | Severe | An uprooted tree. |
| 2026-04-17 | CADDY VISTA, WI | 81 | Severe | Total destruction of a greenhouse and damage to other outbuildings. Multiple trees uprooted and leaning to the north northeast. |
| 2026-04-14 | 4 SSE Sullivan, WI | 60 | Significant | — |
| 2026-04-14 | ROCHESTER FOX RVR AR, WI | 60 | Significant | Trained spotter reports uprooted trees and shingle damage from thunderstorm winds. |
| 2026-04-14 | LAKE BEULAH, WI | 64 | Severe | Several large tree downs. Another tree down on County Highway L just to the south. |
| 2026-04-14 | BURLINGTON AIRPORT, WI | 70 | Severe | Some siding damage. |
| 2026-04-14 | WEST ALLIS, WI | 58 | Significant | Multiple social media reports of trees and tree limbs down in southwest Milwaukee. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Waukesha was on August 10, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Waukesha averages roughly 47 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 169 of the 233 events recorded over the last five years.
The largest documented hail near Waukesha in the last five years was egg-sized. Most Waukesha-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 Waukesha. 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 Waukesha 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 ValidationWaukesha 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.