Duluth hail storm history
St. Louis County·NOAA NCEI Storm Events Database·~75-day publication lag
Duluth, located in St. Louis County along Lake Superior's western shore in northeast Minnesota, experiences hail as a recurring weather hazard. The city's position on the lake creates unique atmospheric conditions where lake-effect interactions occasionally enhance storm development, making hail a seasonal concern for homeowners despite the moderating influence of the large water body.
Check if your roof was damaged by recent hail
Hail in Duluth peaks during June and July, when atmospheric instability is greatest across the region. May and August represent secondary risk months. Most significant hail events in this area develop when warm, moisture-laden air collides with upper-level disturbances, a pattern that favors late spring and summer months.
Annual frequency — last 10 years
When hail hits — monthly pattern
Avg events per month · all years · NOAA data
All recorded hail events
Of 115 recorded events, 23 (20%) reached 1.5" or larger — the threshold for likely functional damage on standard asphalt shingles.
Dimes to quarter sized hail with over an inch of accumulation on the ground.
Cars were damaged on Interstate 35 near the Mahtowa exit.
A few trees were down in the area as well.
The large hail punched holes in canvas tents, dented multiple vehicles and completely stripped the l…
The hail damaged some vehicles.
There was dime sized hail.
NOAA National Centers for Environmental Information Storm Events Database. Publication lag is approximately 75 days — current-year events may be incomplete.
NOAA Storm Events Database ↗