Weather information for the Mount Baker 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 | 34 | 44 | 54 | 64 | 72 | 81 | 88 | 88 | 78 | 64 | 44 | 34 |
| Avg. Low | 17 | 22 | 27 | 34 | 38 | 46 | 48 | 48 | 41 | 34 | 28 | 18 |
| Avg. Precip. | 5.0 | 3.0 | 2.1 | 1.3 | 0.7 | 0.6 | 0.3 | 0.6 | 0.8 | 1.8 | 4.3 | 5.3 |



