Thornton, CO hail history
Radar and ground reports show 15 days of one-inch-or-larger hail over Thornton (Adams County) since 2022 (1 in 2022, 7 in 2023, 3 in 2024, 2 in 2025, 2 in 2026). The most recent was September 6, 2026; the largest radar estimate was 3.5" (teacup size) on May 30, 2024.
- September 6, 2026radar up to 1.25" (half dollar size)
- June 8, 2026radar up to 1.5" (ping-pong ball size)
- June 17, 2025radar up to 2" (hen egg size) · 7 reports
- June 1, 2025radar up to 1.25" (half dollar size)
- August 6, 2024radar up to 1.25" (half dollar size)
- July 20, 2024radar up to 1" (quarter size) · 1 report
- May 30, 2024radar up to 3.5" (teacup size) · 10 reports
- August 3, 2023radar up to 1.25" (half dollar size) · 2 reports
- July 4, 2023radar up to 1.25" (half dollar size)
- June 21, 2023radar up to 2" (hen egg size) · 1 report
- May 31, 2023radar up to 1.75" (golf ball size)
- May 26, 2023radar up to 1" (quarter size)
- May 16, 2023radar up to 1" (quarter size)
- May 9, 2023radar up to 1.5" (ping-pong ball size) · 2 reports
- August 7, 2022radar up to 1.5" (ping-pong ball size)
Every home inside a storm's radar footprint, scored by roof age, material and hail history, sold to a few roofers only so you are not the twentieth truck on the street.
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.