Hail in Knox County, IL
Hail turns up in Knox County on a regular basis. NOAA radar has confirmed 8 hail events of 1 inch or larger in Knox County since 2025, the largest 2″ (hen egg) on March 10, 2026. The most recent confirmed hail was July 20, 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 Knox County, IL
Knox County sits in western Illinois amid the gently rolling prairie farmland of the state's grain belt. When vigorous fronts lift warm, moist air across the region, storms here can occasionally grow strong enough to drop sizable hail. The Quad Cities radar (KDVN) lies about 51 miles to the north, a distance at which it reads storm tops more readily than detail near the ground.
The hail record for Knox County, IL
Hail is a recurring threat in Knox County, with 8 confirmed events on record since 2025.
This year has run hot: 7 confirmed events in 2026 already, ahead of the recent pace.
May is the peak, but the broader risk stretches across spring and into early summer.
Common questions
How often does it hail in Knox County?
NOAA radar has confirmed 8 severe hail events (1 inch or larger) in the Knox County area since 2025.
When is hail season in Knox County?
Knox County sees hail from spring into early summer, most often in May.
What's the largest hail recorded in Knox County?
Radar confirmed 2-inch hail, about hen egg size, on March 10, 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.
Is hail getting worse in Knox 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 Knox County, 7 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.
Will it hail again in Knox County this year?
Knox County's record already includes more than one confirmed event in a single season. That's what the data shows so far, not a prediction for any given season.
Did it hail in Knox County in 2026?
Yes, 7 confirmed hail events so far in 2026, most recently July 20, 2026.
Recent confirmed hail near Knox County, IL
What this means for your home
Damage can be invisible from the ground
At Knox 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.
Get more than one estimate
After a damaging storm, reputable local roofers get busy and out-of-town crews flood in. Get multiple written estimates and verify licensing and local references before signing anything.
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.
Claims have deadlines
Policies set a deadline for hail-damage claims, and state law may also apply. Windows range from months to several years depending on your state and policy. Knowing the exact date hail hit your address helps you file on time.
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.
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.