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Hail history in Cottage Grove, MN

Radar has detected major hail over the Cottage Grove area on 22 days since 2011, up to 2.75" (baseball size or larger) on August 15, 2025. Source: NOAA Severe Weather Data Inventory radar signatures, which estimate hail aloft near Cottage Grove, not confirmed ground reports.

Data last updated: July 28, 2026

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Every major hail day near Cottage Grove

September 21, 2025up to 2.25" near Cottage Grove · storm peaked at 2.75" (Ellendale area)August 15, 2025up to 2.75" near Cottage Grove · storm peaked at 2.75" (Cottage Grove area)May 15, 2025up to 1.25" near Cottage Grove · storm peaked at 2.25" (Onamia area)August 29, 2024up to 1.25" near Cottage Grove · storm peaked at 2" (New London area)August 27, 2024up to 1" near Cottage Grove · storm peaked at 2.5" (Waconia area)July 26, 2023up to 1.25" near Cottage Grove · storm peaked at 2.25" (Hoffman area)July 4, 2023up to 1.5" near Cottage Grove · storm peaked at 2.25" (Maplewood area)August 5, 2021up to 2" near Cottage Grove · storm peaked at 2.5" (Leota area)August 28, 2020up to 1.25" near Cottage Grove · storm peaked at 1.75" (Waseca area)September 24, 2019up to 2" near Cottage Grove · storm peaked at 4" (Le Sueur area)August 13, 2019up to 1" near Cottage Grove · storm peaked at 3.25" (Cannon Falls area)September 18, 2018up to 1.25" near Cottage Grove · storm peaked at 2" (Marshall area)June 28, 2017up to 1.75" near Cottage Grove · storm peaked at 2.75" (Hastings area)May 16, 2017up to 2" near Cottage Grove · storm peaked at 3" (Afton area)October 17, 2016up to 2" near Cottage Grove · storm peaked at 2" (Cottage Grove area)September 20, 2016up to 1.25" near Cottage Grove · storm peaked at 2.75" (St. Clair area)July 23, 2016up to 1.5" near Cottage Grove · storm peaked at 4" (Emmons area)September 16, 2015up to 1" near Cottage Grove · storm peaked at 1.25" (Granite Falls area)May 8, 2014up to 1.25" near Cottage Grove · storm peaked at 3" (Beaver Creek area)July 9, 2013up to 1" near Cottage Grove · storm peaked at 1.25" (St. Paul area)May 26, 2012up to 2" near Cottage Grove · storm peaked at 3.5" (Nerstrand area)July 30, 2011up to 2" near Cottage Grove · storm peaked at 3.5" (Herman area)

What this record means for a Cottage Grove roof

The list above covers 22 radar-confirmed hail days over Cottage Grove between 2011 and 2025. The largest signature recorded over the Cottage Grove area was 2.75" (baseball size or larger) on August 15, 2025. Radar put the local estimate at or above the 1" mark, the size generally capable of damaging asphalt shingles, on every one of those days.

Insurers and their adjusters can pull this same NOAA archive, so a date on this list is not news to the company handling a claim. What the archive cannot show is the condition of your specific roof, which is why dated photos and a written inspection report carry the weight in a dispute. Most homeowner policies also set a deadline to report storm damage, commonly one or two years from the date of loss, so a recent date above matters most if the roof was never inspected after it.

Get the roof inspected, free

Radar cannot confirm what hit your shingles; an inspection can, and it costs you nothing. For Minnesota properties, our sister site MN Hail Buddy passes your request to exactly one licensed Minnesota contractor: one company, never a blast list, and your information is not sold to anyone else.

Request a free Minnesota inspection

MN Hail Buddy is part of the same network as this site. The contractor pays for the introduction; you pay nothing.

Before you sign anything, read the contractor red flags: assignment-of-benefits traps, deductible games, and storm-chaser tells.

Common questions

Has Cottage Grove had hail big enough to damage roofs?

Radar has detected hail up to 2.75" (baseball size or larger) over the Cottage Grove area, most recently on September 21, 2025. Hail of 1" or larger is generally considered capable of damaging asphalt shingles.

Does this prove my roof was damaged?

No. Radar estimates hail aloft, accurate to roughly a mile, and cannot confirm what reached any specific roof. It is a strong reason to document your roof and check your policy's claim deadline after a listed date, not proof of damage.

How do I check my exact address in Cottage Grove?

Use the free address lookup on this site. It searches the same NOAA radar archive within a radius you choose around your address, back to 2011.

If one of these dates is recent