Hail history for 80504 · Longmont, CO
In the last three years radar flagged hail over this ZIP on 10 days, 10 of them with stones estimated at one inch or larger, the size where roof damage becomes likely. The largest estimate was 2" (hen egg size) on June 17, 2025.
| Date | Largest hail (radar est.) | Radar signatures | Ground reports |
|---|---|---|---|
| June 24, 2026 | 1" (quarter size) | 3 | — |
| June 1, 2026 | 1" (quarter size) | 4 | — |
| August 27, 2025 | 1" (quarter size) | 1 | — |
| August 10, 2025 | 1" (quarter size) | 6 | — |
| June 25, 2025 | 1.25" (half dollar size) | 13 | 2 |
| June 17, 2025 | 2" (hen egg size) | 11 | — |
| May 18, 2025 | 1" (quarter size) | 4 | 2 |
| July 20, 2024 | 2" (hen egg size) | 17 | 1 |
| June 20, 2024 | 1.25" (half dollar size) | 4 | — |
| May 30, 2024 | 1.25" (half dollar size) | 16 | 1 |
Radar sizes describe the storm over the ZIP, not any one roof. If a date above worries you, a local roofer can inspect for free, and your policy sets the deadline for reporting storm damage.
Free. Or see the storms open now, with every home inside the radar footprint.
Radar sizes are estimates from NEXRAD hail signatures (NOAA Severe Weather Data Inventory) for the largest stones in a storm cell, not a measurement at any one home. Ground reports are National Weather Service local storm reports and the NOAA Storm Events Database, as filed. Town-level data only; this page shows no addresses and no homeowner information.