Rochester is not hail alley, but it is not exempt either — the area averages about 5 hail-producing storms a year. When a cell does track over the county, the reports below tell you the date, the stone size, and how close it came.
Rochester's Storm-Climate Context
Rochester, Minnesota experiences a humid continental climate with cold winters and warm summers, which can lead to significant snow accumulation requiring proper roof management and potential ice damming issues. Hail storms are also common during spring and early summer months, causing damage to roofs.
The roofing market in Rochester is well-served by numerous local contractors who specialize in both residential and commercial services. Homeowners should consider checking insurance coverage for specific needs before making roof repairs or replacements due to frequent weather events such as hailstorms and heavy snowfalls.
Hail Events Near Rochester by Date
August 18, 2026 — 2 reports, hail up to 1.00″ (quarter size)
| Time (UTC) | Hail size | Location | Distance from Rochester |
|---|---|---|---|
| 1939 | 1.00″ | 2 SSE Viola, Olmsted County | 10.9 mi |
| 1959 | 1.00″ | Saint Charles, Winona County | 20.7 mi |
Preliminary Local Storm Reports from the NOAA Storm Prediction Center. Sizes are reported hailstone diameters; times are UTC. Reports can be added or corrected for about a day after each event. A quiet page section ≠ no hail — smaller or unreported events happen. The closest report in this window landed 10.9 miles from Rochester's center.
View these 2 reports on a map
Circle positions are the NOAA SPC report coordinates; tap a circle for the date and hail size.
Hail size: < 1″ 1–1.75″ ≥ 2″ not recorded
How Severe Was It? The NWS Yardstick, Applied to Rochester's Reports
The National Weather Service calls hail severe at 1″ (quarter size) and significant at 2″ (hen-egg size). Scoring the 2 Rochester-area reports (filed in Olmsted, Winona Counties) against that scale: 2 of them met the severe 1″+ criterion — the size at which asphalt shingles start taking granule loss and bruising that shows up as leaks a season later. Damage at these sizes is rarely visible from the ground but is typically covered by homeowners insurance when documented promptly.
What to Do If Your Roof Was in the Hail Path
- Do a ground-level walk-around. Hail is rare enough around Rochester that most homeowners never think to check — look for granules collecting at downspouts, dented gutters or screens, and battered plants after the August 18, 2026 reports above. Stay off the roof itself.
- Photograph anything suspicious with dates. Even minor-looking marks matter later: this NOAA log plus dated photos connect the damage to a covered storm event instead of "gradual wear", which insurers exclude.
- Book a free inspection rather than guessing. Bruised shingles and granule loss are invisible from the ground; a written scope from a local roofer settles whether there is a claim at all.
- Only involve the insurer once you know the scope. If the inspection finds nothing, you have lost nothing; if it finds damage, file within your policy's window while the event date is easy to prove.
- Bring the written scope to the adjuster. Full walkthrough in the roof insurance claim guide.
Hail History in Rochester — the 10-Year Picture
The county behind Rochester has logged 83 hail events over the last decade — a pace of roughly 8 per year — with the most severe stone measured at 2.00″. Against that 10-year baseline, the 1 hail day in this 90-day window run below the long-term average rate. Rochester averages 5 hail-producing storms per year — check hail risk lookup for your address.
Compared to the Minnesota county median of 76 hail events over 10 years, Rochester's county runs 1.1× above average — an exposure level that pushes local insurers toward higher wind-and-hail premium tiers and makes impact-resistant shingles a cost-effective upgrade.
Rochester's County, Year by Year (NOAA Archive)
| Year | Recorded hail events | Largest stone |
|---|---|---|
| 2024 | 3 | 1.25″ |
| 2023 | 9 | 1.50″ |
| 2022 | 22 | 1.75″ |
| 2021 | 4 | 1.00″ |
| 2020 | 2 | 1.00″ |
| 2019 | 4 | 0.88″ |
| 2018 largest stone | 11 | 2.00″ |
| 2017 busiest | 27 | 1.75″ |
| 2016 | 1 | 0.75″ |
NOAA Storm Events archive, Rochester's county. Years with no row logged no hail events.
The county's busiest hail year in the archive was 2017 (27 recorded events), while the largest stone on record — 2.00″ — fell in 2018. If your roof predates 2017 and has never had a documented inspection, assume it has taken at least one unexamined hit.
Hail in Rochester — Questions Homeowners Ask
Check Your Own ZIP in Rochester
The county-level history above averages over the whole area. For a score tied to your address, run your ZIP through the hail risk lookup — Rochester ZIP codes include 55901, 55903, 55904, 55905, 55906.
Rochester Neighborhoods — Hail Exposure Varies by Area
Hail paths track with storm cell movement, not city limits. If you're in Northeast Rochester, Rochester Hills, Southeast Rochester, North Rochester or Downtown Rochester, check your specific street against the report locations above — distance from Rochester's center is listed for each report.
More Resources
Roofing contractors in Rochester · Storm damage repair in Rochester · Insurance claim guide · Roof replacement costs in Rochester · Emergency roof repair