Hail history · Colorado
Boulder County, Colorado hail history
26 days with hail reports since 2010, most recently Jul 28, 2026. Largest hail: 3.00".
Hail days since 20102612 in the last 5 years
Largest hail3.00"teacup · Jun 18, 2018
Damaging wind reports9last Jul 20, 2024
By year
| Year | Hail days | Hail reports | Largest hail | Wind reports | Strongest gust |
|---|---|---|---|---|---|
| 2026 (preliminary) | 1 | 1 | 1.00" | 0 | – |
| 2025 | 4 | 5 | 1.00" | 0 | – |
| 2024 | 1 | 4 | 1.00" | 1 | 61 mph |
| 2023 | 4 | 8 | 1.75" | 1 | 61 mph |
| 2022 | 2 | 2 | 1.00" | 0 | – |
| 2021 | 1 | 1 | 1.00" | 0 | – |
| 2020 | 1 | 1 | 1.00" | 2 | 63 mph |
| 2019 | 4 | 36 | 2.50" | 2 | 62 mph |
| 2018 | 7 | 39 | 3.00" | 2 | 67 mph |
| 2017 | 0 | 0 | – | 1 | 70 mph |
| 2016 | 1 | 1 | 1.00" | 0 | – |
| 2015 | 0 | 0 | – | 0 | – |
| 2014 | 0 | 0 | – | 0 | – |
| 2013 | 0 | 0 | – | 0 | – |
| 2012 | 0 | 0 | – | 0 | – |
| 2011 | 0 | 0 | – | 0 | – |
| 2010 | 0 | 0 | – | 0 | – |
Largest hail reports
| Size | About the size of a | Date |
|---|---|---|
| 3.00" | teacup | Jun 18, 2018 |
| 2.50" | tennis ball | Jun 18, 2018 |
| 2.50" | tennis ball | Jul 5, 2019 |
| 2.00" | hen egg | Jun 18, 2018 |
| 2.00" | hen egg | Jun 18, 2018 |
| 2.00" | hen egg | Jun 18, 2018 |
| 2.00" | hen egg | Jul 5, 2019 |
| 2.00" | hen egg | Jul 5, 2019 |
| 1.75" | golf ball | Jun 18, 2018 |
| 1.75" | golf ball | Jun 18, 2018 |
Check a specific address
County totals hide big differences between neighborhoods. See every report within 1 to 10 miles of a home.
Source: NOAA Storm Prediction Center storm reports (final Storm Data through Dec 28, 2025; preliminary reports through Oct 9, 2026). Hail 1 inch or larger and damaging wind (58 mph or more, or reported damage). Counts are reports, not damage claims; many storms go unreported. Dates are CST. About the data