Hail Reports in Oshkosh, Wisconsin — Last 90 Days

Hail near Oshkosh in the last 90 days

• 1.00 inLargest hail in 90 days (quarter size)
• 1Hail day near Oshkosh
• 2SPC reports
• August 18, 2026Most recent event

Around Oshkosh, the NOAA Storm Prediction Center logged 2 hail reports within 25 miles between August 18 and August 18, 2026, spread over 1 storm day. That day brought stones of 1″ or more, and 0 of the 2 Oshkosh reports with coordinates fell within 10 miles of the city center. In a typical year Oshkosh sees about 4 hail-producing storms.

Oshkosh's storm-climate context

Oshkosh endures a humid continental climate with long cold winters and 39.2 inches of average annual snowfall -- a persistent snow load that stresses rafters, triggers ice dam formation at eaves, and accelerates shingle granule loss through freeze-thaw cycling. The record high of 107 F and record low of -34 F in February define a wide thermal range that is among the most punishing in the Midwest for roofing membranes and flashing seals. Late-spring to early-fall precipitation peaks add hail exposure. Roofs in Oshkosh face year-round mechanical stress from snow accumulation, ice, and summer storm events.

Oshkosh, with 66,816 residents in 2020, is Wisconsin's ninth-largest city with a manufacturing-anchored economy. Oshkosh Corporation, a global specialty-vehicle manufacturer, is the city's signature employer. The University of Wisconsin-Oshkosh, the state's third-largest university with approximately 15,000 students, adds institutional building stock. EAA AirVenture draws more than 600,000 visitors annually, spurring hospitality and commercial development that drives roofing maintenance and upgrade demand.

How close the hail came

Of the 2 Oshkosh reports, the closest landed 14.4 miles from the city center on August 18, 2026 (1.00″ at 1 NE Fond Du Lac). August 18, 2026 was the heaviest day around Oshkosh, with 2 reports and a top stone of 1.00″. Near Oshkosh, 1 of 1 hail day reached 1″ or larger.

Distances are straight-line from the city center to each SPC report point; reports without coordinates are left out of the table.

Hail events near Oshkosh by date

The Oshkosh tables above list 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 log does not mean no hail: small or unreported events happen. The closest report in this window landed 14.4 miles from Oshkosh's center.

On the Oshkosh 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 Oshkosh's reports

Hail history in Oshkosh: the long picture

County-level NOAA records for the county behind Oshkosh, 2014–June 2026. Each figure shows its source. Storms after the archive ends are not in these numbers. Ranks count from 1, the highest.

Oshkosh against the 209 cities we cover

• #158of 209Days with hail 1 in or larger in Oshkosh: bottom quarter
• #196of 209Days with hail 1.75 in or larger (golf ball) in Oshkosh: bottom quarter
• #175of 209Days with 58+ mph thunderstorm wind in Oshkosh: bottom quarter
• #126of 209Tornadoes in Oshkosh: middle
• #194of 209Reported storm property damage in Oshkosh: bottom quarter
• #72of 209Share of homes built before 1980 in Oshkosh: middle

For Oshkosh's county, NOAA records a most severe stone of 1.00″ and 15 hail events since 2017, close to 2 every year. Set against that baseline, the 1 hail day near Oshkosh in the 90-day window above runs above the long-term average rate. Check your own Oshkosh address on the hail risk lookup.

Oshkosh's county logged fewer hail events than the Wisconsin median (39 per county since 2017), below the state's typical pace.

Three ways a storm reaches a roof

In the archive for Oshkosh's county, 2020 was the busiest hail year (4 recorded events); the largest stone on record, 1.00″, fell in 2026. A Oshkosh roof older than 2020 with no documented inspection has probably taken at least one unexamined hit.

In a market with repeat hail, impact-resistant Class 4 shingles often pay for themselves through insurer premium discounts — worth discussing with a Oshkosh roofer if a recent event tips you into a replacement.

Winnebago County fact sheet for Oshkosh homeowners

Housing age, federal disaster declarations and your state's claim deadlines in one place. All three come from public records, county level.

What to do if your roof was in the hail path

1. Stay off the roof and read the yard instead. Hail came as near as 14.4 miles to Oshkosh (1 NE Fond Du Lac, August 18, 2026) in the last 90 days. Granule piles under a Oshkosh downspout and dents on gutters, vents and screens are the signs to look for.
2. Photograph and date everything before repairs. The log's worst day near Oshkosh: August 18, 2026, 2 reports, largest 1.00 in. Pair that date with your dated photos and a coin-for-scale shot to pin the loss to a storm.
3. Have a roofer look before you decide. The single hail day near Oshkosh reached 1 inch or more. Nobody on a Oshkosh lawn can see bruised shingles or lost granules, so a written scope from a roofer is the test for a claim.
4. File on the policy's clock. The latest storm day near Oshkosh was 68 days ago. Your reporting window comes from the policy itself; file promptly while the dates in this log are fresh.
5. Bring the written scope to the adjuster. Hand over the scope in writing: an adjuster working a Oshkosh claim then has the contractor's numbers. Step-by-step: the roof insurance claim guide.

Hail in Oshkosh — questions homeowners ask

Check your own ZIP in Oshkosh

The county figures above average over everything inside the county line. For a score tied to your Oshkosh address, run your ZIP through the hail risk lookup — Oshkosh ZIP codes include 54901, 54902, 54903, 54904, 54906.

Oshkosh neighborhoods — hail exposure varies by area

Hail paths track with storm cell movement, not city limits. If you're in Downtown Oshkosh, South Shore, Oshkosh West, Hoffman Park or Westwood, check your specific street against the report locations above — distance from Oshkosh's center is listed for each report.

More resources

• Roofing contractors in Oshkosh
• Storm damage repair in Oshkosh
• Roof repair in Oshkosh
• Roof inspection in Oshkosh
• Insurance claim guide
• Roof replacement costs in Oshkosh
• Emergency roof repair
• All recent hail reports
• Hail risk lookup

Sources: NOAA Storm Prediction Center Local Storm Reports (last 90 days, preliminary) and the NOAA NCEI Storm Events Database (county of the city, 2014–June 2026); U.S. Census Bureau American Community Survey 5-year estimates (housing). The Storm Events archive used here ends in 2026, so storms between that date and the start of the 90-day log are not shown. How we collect data. Are you a roofer in Oshkosh? See how requests reach contractors.