Weather information for the Farmington area is provided below. Average temperatures, climate details and current forecasts are included.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 42 | 49 | 58 | 66 | 76 | 87 | 91 | 88 | 81 | 68 | 53 | 43 | |
| Avg. Low | 18 | 23 | 28 | 34 | 44 | 52 | 59 | 58 | 50 | 38 | 27 | 19 | |
| Precipitation | 0.5 | 0.5 | 0.7 | 0.6 | 0.5 | 0.2 | 1.0 | 1.2 | 1.0 | 1.0 | 0.8 | 0.4 | |


