16 days with hail of 1 inch or larger have been logged in 80403 (Coal Creek) since 1996, 2.4 times the Jefferson County ZIP average of 6.7.
Area name is an approximation from Census ZCTA data. Method and limits.
Largest storm: August 19, 2021
2-inch (hen egg) hail near Golden. Hail of 1 to 2 inches and strong winds hit Adams, Broomfield, Douglas, Jefferson and nearby counties. (NOAA NCEI event 978625, episode 162089)
80403 vs. the Jefferson County average
| Since 1996 | 80403 | Jefferson Co. ZIP avg. (26) |
|---|---|---|
| Days with 1 in.+ hail | 16 | 6.7 |
| Reports 1 in.+ | 24 | 10.5 |
| Reports 1.75 in.+ | 8 | |
| All reports | 35 | |
| Last report | June 8, 2026 |
Hail days here run 2.4 times the county ZIP average. Part of this ZIP area lies in Gilpin and Boulder County.
Homes in 80403
| Housing (2020-2024) | 80403 | Jefferson Co. |
|---|---|---|
| Median year built | 1994 | 1981 |
| Built before 1980 | 35.5% | 48.5% |
| Built before 2000 | 60.3% | |
| Owner-occupied | 86.9% | 69.6% |
| Housing units | 8,854 |
Source: Census ACS 5-year, 2020-2024.
The 2-inch maximum here meets or tops the 2-inch hail a roof covering must withstand for the IBHS FORTIFIED High Wind & Hail designation, and 8 of the 24 reports reached 1.75 inches. With a median build year of 1994 and 60.3% of homes built before 2000, an original roof on a typical house here has been through most of the storms listed above. (Insurance Institute for Business & Home Safety)
Reports by decade
| Decade | All | 1 in.+ | 1.75 in.+ |
|---|---|---|---|
| 1996-99 | 1 | 1 | 1 |
| 2000s | 16 | 12 | 5 |
| 2010s | 10 | 5 | 1 |
| 2020s | 8 | 6 | 1 |
Every 1 in.+ hail day in 80403
1999: June 10 (1.75); 2002: Aug. 27 (2); 2004: June 8 (1.5); 2007: July 3 (2); 2008: May 22 (1); 2009: June 22 (2), Sept. 13 (1.25); 2010: July 4 (1); 2014: July 3 (1.5), Aug. 7 (1); 2017: May 8 (2); 2020: Aug. 5 (1.25); 2021: Aug. 19 (2); 2023: June 21 (1); 2025: Aug. 23 (1); 2026: June 8 (1).
10 largest reports
| Date | Hail | NCEI |
|---|---|---|
| Aug. 19, 2021 | 2 in. (hen egg) | 978625 |
| May 8, 2017 | 2 in. (hen egg) | 684843 |
| June 22, 2009 | 2 in. (hen egg) | 166937 |
| July 3, 2007 | 2 in. (hen egg) | 32815 |
| Aug. 27, 2002 | 2 in. (hen egg) | 5313215 |
| Aug. 27, 2002 | 2 in. (hen egg) | 5313216 |
| Aug. 27, 2002 | 1.75 in. (golf ball) | 5313218 |
| June 10, 1999 | 1.75 in. (golf ball) | 5704558 |
| Aug. 19, 2021 | 1.5 in. (ping pong ball) | 978627 |
| July 3, 2014 | 1.5 in. (ping pong ball) | 531599 |
Building code: Jefferson County (unincorporated) roof code data (confirm your address is inside this jurisdiction)
Neighboring ZIP pages: 80401 (Golden) · 80439 (Evergreen)
Denver metro hail history · Denver hail damage repair · Free roof inspection · Jefferson County ZIPs
