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Hail history for Mchenry County, IL

149 hail reports in Mchenry County since 2006 on 61 days. The largest stones measured 2.75 in (baseball) on May 2, 2018.

Cities in Mchenry County

• Crystal Lake
  53 hail days
• Algonquin
  59 hail days
• Lake in the Hills
  55 hail days
• McHenry
  40 hail days
• Huntley
  53 hail days
• Woodstock
  41 hail days
• Cary
  56 hail days
• Harvard
  22 hail days
• Marengo
  26 hail days
• Johnsburg
  30 hail days
• Lakemoor
  42 hail days
• Spring Grove
  32 hail days
• Fox River Grove
  52 hail days
• Wonder Lake
  30 hail days
• Lakewood
  55 hail days
• Pistakee Highlands
  32 hail days

Recent hail in Mchenry County

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Mchenry County by year

When hail season peaks in Mchenry County

Damaging thunderstorm winds in Mchenry County

270 reports of damaging thunderstorm wind in Mchenry County since 2006, on 114 days. The strongest measured gust was 76 mph on Apr 17, 2026.

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Jabdoñ eo an roof im hail?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Mchenry County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).