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 340 hail storms within 25 miles of Sun Prairie, WI. Of those, 285 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 baseball-sized or larger, which can fracture shingle mat and dent metal flashing on contact. 2026 was the most active year on record locally, with 180 documented hail events.
Check Hail History for a Specific Address in Sun Prairie| Severity | Count | What it means for roofs |
|---|---|---|
| Catastrophic | 11 events | Baseball+ size, structural roof damage likely |
| Destructive | 50 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 67 events | Ping pong-size, granule loss and bruising common |
| Significant | 157 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 55 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 180 events |
| 2025 | 72 events |
| 2024 | 21 events |
| 2023 | 26 events |
| 2022 | 41 events |
2026 was the busiest hail year on record locally for Sun Prairie, with 180 documented events inside the 25-mile radius. Storm activity in Sun Prairie 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 |
|---|---|---|---|---|
| 2026-08-09 | 2 S Windsor, WI | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-04-17 | Watertown, WI | Significant | 1.00" | — |
| 2026-04-15 | 3 E Maple Bluff, WI | Destructive | 2.25" | Report from mPING: Hen Egg+ (2.25 in.). |
| 2026-04-15 | 2 NE Maple Bluff, WI | Destructive | 2.75" | Trained spotter estimates baseball sized hail. |
| 2026-04-15 | 3 NE Monona, WI | Destructive | 2.75" | Trained spotter reports baseball-sized hail. Multiple vehicles with broken glass. |
| 2026-04-14 | SHOREWOOD HILLS, WI | Significant | 1.25" | Public report of 1.25 inch diameter hail south of Middleton. Time confirmed via radar data. |
| 2026-04-14 | 4 SW Middleton, WI | Destructive | 2.75" | Trained spotter measures hail stones as large as 2.75 inches in diameter. |
| 2026-04-14 | MIDDLETON, WI | Severe | 1.50" | Public report of 1.5 inch diameter hail near Middleton. Time confirmed via radar data. |
| 2026-04-14 | 1 NW Middleton, WI | Severe | 1.75" | Report from mPING: Golf Ball (1.75 in.). |
| 2026-04-14 | CROSS PLAINS, WI | Destructive | 2.00" | Trained spotter reports 2 inch diameter hail near Cross Plains. |
| 2026-04-14 | 4 S Middleton, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-04-14 | Middleton, WI | Severe | 1.50" | — |
| 2026-04-14 | 3 S Middleton, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-04-14 | 1 NW Riley, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-04-14 | 1 W Middleton, WI | Severe | 1.75" | — |
| 2026-04-14 | SHOREWOOD HILLS, WI | Significant | 1.25" | Public report of 1.25 inch diameter hail south of Middleton. Time confirmed via radar data. |
| 2026-04-14 | 4 NE Cross Plains, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-04-14 | 4 N Verona, WI | Severe | 1.50" | Report from mPING: Ping Pong Ball (1.50 in.). |
| 2026-04-14 | MADISON MOREY ARPT, WI | Destructive | 2.75" | Trained spotter reports 2.75 inch diameter hail to the southwest of Middleton. Time confirmed via radar data. |
| 2026-04-14 | 1 S Middleton, WI | Severe | 1.50" | Report from mPING: Ping Pong Ball (1.50 in.). |
NOAA has recorded 142 high-wind events within 25 miles of Sun Prairie, WI in the past five years. Of those, 142 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 85 mph.
| Severity | Count |
|---|---|
| Severe | 57 events |
| Significant | 85 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-08-09 | 4 NE Edgerton, WI | 59 | Significant | 59 mph wind gust recorded via weather station mounted to roof. |
| 2026-07-09 | 3 E Lake Wisconsin, WI | 56 | Significant | Measured on personal weather station. |
| 2026-07-02 | 2 SE Windsor, WI | 55 | Significant | Private weather station measures 55 MPH wind gust southeast of Windsor. Time confirmed from radar. |
| 2026-07-02 | 3 WSW Watertown, WI | 55 | Significant | Private weather statement measures 55 MPH wind gust. Time confirmed from radar. |
| 2026-06-18 | 1 SSW Paoli, WI | 65 | Severe | — |
| 2026-06-17 | BASCO, WI | 64 | Severe | — |
| 2026-06-10 | 1 S Verona, WI | 70 | Severe | 70mph wind gust measured with handheld anemometer - Kestrel 2500. |
| 2026-06-10 | VERONA, WI | 70 | Severe | Trained spotter measures 70 MPH wind gusts. |
| 2026-06-10 | FULTON, WI | 81 | Severe | Trained spotter estimates 80 MPH wind gusts just west of Edgerton. |
| 2026-06-10 | 4 W Edgerton, WI | 80 | Severe | Trained spotter estimates 80 MPH wind gusts. |
| 2026-06-10 | BUSSEYVILLE, WI | 85 | Severe | Trained spotter estimates 85 MPH wind gusts to the southeast of Rockdale. |
| 2026-06-10 | 6 SE Rockdale, WI | 85 | Severe | Trained spotter estimates 85 MPH wind gusts. |
| 2026-06-10 | CAMP RANDALL STADIUM, WI | 60 | Significant | Public report of a large tree uprooted and on powerlines. Wind speed estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | SUN PRAIRIE, WI | 64 | Severe | Public report of a 64 MPH wind gust as measured by a private weather station. |
| 2026-06-10 | 3 SW Arlington, WI | 63 | Significant | Home wx station. |
| 2026-06-10 | 2 NNE Maple Bluff, WI | 53 | Significant | Dane County Regional AP. |
| 2026-06-10 | ARLINGTON, WI | 63 | Significant | Public report of a 63 MPH wind gust as measured by a home weather station. |
| 2026-06-10 | POYNETTE, WI | 60 | Significant | Public report of many downed tree branches. Wind speed estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | 2 NNE Sun Prairie, WI | 64 | Severe | Home wx station. |
| 2026-06-10 | DEANSVILLE, WI | 60 | Significant | Public report of large downed tree branches. Wind gust estimated from radar data, nearby observations, and damage. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Sun Prairie was on April 17, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Sun Prairie averages roughly 68 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 285 of the 340 events recorded over the last five years.
The largest documented hail near Sun Prairie in the last five years was baseball-sized or larger. Most Sun Prairie-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 Sun Prairie. 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 Sun Prairie 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 ValidationSun Prairie 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.