Boulder Freeze Details
| Station Name | Station ID | Latitude | Longitude | Country | State | Period | Years |
| BOULDER | USC00420849 | 37.905 | -111.42 | United States | Utah | 1954-2025 | 67 |
| Last spring freeze | |||||
| Early | Early Year | Avg | Median | Late | Late Year |
| 17-Apr | 2020 | 18-May | 15-May | 04-Jul | 2000 |
| First fall freeze | |||||
| Early | Early Year | Avg | Median | Late | Late Year |
| 09-Sep | 1962 | 05-Oct | 05-Oct | 06-Nov | 1987 |
| Freeze-free Season | |||||
| Short | Short Year | Avg | Median | Long | Long Year |
| 79 | 1968 | 141.0 | 142.0 | 192 | 2020 |