Weather information for the Cortez area is provided below. Average temperatures, climate details and current forecasts are included.
Cortez is situated between the desert and mountains, which tends to lessen the extreme temperatures seen in nearby areas. Nevertheless, summers can be very hot, and winters can be very cold; take appropriate precautions depending on the season.
| Jan | Feb | ?Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 41 | 46 | 53 | 62 | 72 | 83 | 88 | 86 | 79 | 67 | 52 | 42 | |
| Avg. Low | 12 | 18 | 24 | 29 | 37 | 46 | 53 | 52 | 44 | 33 | 22 | 14 | |
| Precipitation | 1.0 | 1.0 | 1.4 | 0.9 | 1.0 | 0.4 | 1.2 | 1.4 | 1.3 | 1.6 | 1.2 | 0.9 | |


