Hail in Marathon County, WI
Marathon County is one of the more hail-prone places in the country. NOAA radar has confirmed 22 hail events of 1 inch or larger in Marathon County since 2025, the largest 1.8″ (golf ball) on March 31, 2026. The most recent confirmed hail was June 30, 2026.
Did hail hit your exact address?
This page covers the whole area. Enter your address to see what NOAA radar detected over your specific roof - free, in seconds.
About Marathon County, WI
Marathon County lies in north-central Wisconsin, a landscape of wooded hills, farmland, and river valleys. Hail here tends to stay on the smaller side, generally pea to marble size, since the storms that form during the warm season seldom reach the intensity seen on the open plains. The Green Bay radar (KGRB) sits about 86 miles to the east, a distance at which it reads storm tops better than what is happening close to the surface.
The hail record for Marathon County, WI
Marathon County sits in an active hail corridor for severe storms.
This year has run hot: 19 confirmed events in 2026 already, ahead of the recent pace.
April is the peak, but the broader risk stretches across spring and into early summer.
Common questions
How often does it hail in Marathon County?
NOAA radar has confirmed 22 severe hail events (1 inch or larger) in the Marathon County area since 2025.
When is hail season in Marathon County?
Marathon County sees hail from spring into early summer, most often in April.
What's the largest hail recorded in Marathon County?
Radar confirmed 1.8-inch hail, about golf ball size, on March 31, 2026.
Does homeowner's insurance cover hail damage?
Hail is a covered peril under most standard homeowner's policies (typically HO-3), subject to your deductible. Whether you have replacement-cost or actual-cash-value coverage makes a big difference in what's paid out. Your declarations page will say which.
How do I know if my roof was damaged by hail?
Common signs are granules collecting in gutters and downspouts, bruised or cracked shingles, and dents on soft metals like vents, flashing, and gutter tops. A lot of hail damage isn't visible from the ground, so a professional inspection is the reliable check.
Is hail getting worse in Marathon County?
Nationally, the research on long-term hail trends is mixed. Better radar coverage since the 1990s makes real increases hard to separate from improved detection. In Marathon County, 19 confirmed events have been recorded in 2026 so far, but the tracked record is still short, so it isn't evidence of a lasting trend.
Hail just hit, what should I do?
Safely photograph any hail and note the time, then confirm what radar recorded at your address before calling your insurer. Most policies require prompt notice after a hail event, and deadlines vary by policy and state, so don't wait to document it.
Recent confirmed hail near Marathon County, WI
What this means for your home
If you were just hit
With recent hail in Marathon County, you're still in the window to document and report it. Photograph any damage, note the storm date, confirm what radar detected at your address, and review your policy's reporting requirements. Deadlines vary.
Damage can be invisible from the ground
At Marathon County's typical sizes, hail often bruises shingles and loosens granules without obvious holes, shortening roof life in ways that are easy to miss until the next storm or an inspection.
Document before you repair
If you suspect hail damage, photograph it and note the storm's date before making any repairs. Undocumented or already-fixed damage is much harder to claim later.
Keep a 'before' record
Photos of your roof and exterior in good condition make new hail damage much easier to prove later. A few shots now, before the next storm, can save an argument with an adjuster over what's old wear and what's storm damage.
Replacement cost vs. actual cash value
An RCV policy pays to replace your roof at today's prices; an ACV policy subtracts depreciation for the roof's age, which can mean a much smaller check on an older roof. Knowing which you carry shapes what a hail claim is actually worth.
Know your hail deductible
Many policies in hail-prone states use a percentage deductible, often 1–2% of the home's insured value rather than a flat dollar amount. On a $400,000 home that can be $4,000–$8,000 out of pocket before coverage starts, so it's worth checking your declarations page before a storm.
Before you call your insurer
Get the radar evidence for your address.
A NOAA Radar Evidence Report documents exactly what federal radar recorded at your address - hail size, date, and signature - in a formatted PDF you can attach to a claim. Built entirely from public NOAA data.
Events are NOAA/NWS Severe Thunderstorm Warnings with confirmed hail ≥ 1 inch, matched to this county by the warning centroid. Federal public-domain data. A confirmed event indicates radar-detected hail over the area, not a guarantee of damage to any specific property.