Hail history in Delmont, SD

Radar has detected major hail over the Delmont area on 21 days since 2011, up to 4" (baseball size or larger) on May 30, 2011. Source: NOAA Severe Weather Data Inventory radar signatures, which estimate hail aloft near Delmont, not confirmed ground reports.

Data last updated: July 28, 2026

Every major hail day near Delmont

July 19, 2025up to 1" near Delmont · storm peaked at 2.25" (Blackhawk area)June 27, 2025up to 1.5" near Delmont · storm peaked at 2.25" (Lakeview Colony area)August 26, 2024up to 1.75" near Delmont · storm peaked at 3.5" (Hermosa area)July 30, 2023up to 2.5" near Delmont · storm peaked at 4" (Cottonwood area)June 24, 2023up to 1" near Delmont · storm peaked at 3" (Running Water area)April 12, 2022up to 2" near Delmont · storm peaked at 3" (Parkston area)August 9, 2020up to 1" near Delmont · storm peaked at 1.5" (Springfield area)June 8, 2020up to 2" near Delmont · storm peaked at 4" (Marty area)September 10, 2019up to 2.5" near Delmont · storm peaked at 2.5" (Bijou Hills area)August 7, 2019up to 2" near Delmont · storm peaked at 4" (Tyndall area)April 13, 2018up to 2" near Delmont · storm peaked at 2" (Delmont area)August 13, 2017up to 1" near Delmont · storm peaked at 3" (Old Elm Spring Colony area)August 1, 2017up to 2" near Delmont · storm peaked at 2.5" (Harrisburg area)September 7, 2015up to 1.25" near Delmont · storm peaked at 4" (Fort Pierre area)August 15, 2015up to 1.5" near Delmont · storm peaked at 2" (Dante area)September 8, 2014up to 1.25" near Delmont · storm peaked at 2.5" (Burbank area)May 29, 2013up to 2.25" near Delmont · storm peaked at 2.25" (Delmont area)September 4, 2012up to 1.25" near Delmont · storm peaked at 2.25" (White Lake area)August 28, 2011up to 3.75" near Delmont · storm peaked at 4" (Olivet area)August 18, 2011up to 1.25" near Delmont · storm peaked at 4" (Yankton area)May 30, 2011up to 4" near Delmont · storm peaked at 4" (Parkston area)

What this record means for a Delmont roof

The list above covers 21 radar-confirmed hail days over Delmont between 2011 and 2025. The largest signature recorded over the Delmont area was 4" (baseball size or larger) on May 30, 2011. 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. Angi matches you with licensed local roofers who inspect for free and bid the work. Know how it works going in: the roofers pay Angi for the introduction, you pay nothing, and more than one company may call. That is the useful part: multiple written estimates are exactly what you want in hand before an adjuster visit or a contract.

Find licensed roofers near you on Angi

Referral disclosure: this site may earn a fee if you request quotes through this link. That does not change what you pay, and no contractor pays to be described a certain way here.

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

Common questions

Has Delmont had hail big enough to damage roofs?

Radar has detected hail up to 4" (baseball size or larger) over the Delmont area, most recently on July 19, 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 Delmont?

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