US Geography / US Weather / California Weather / San Dimas |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 67 | 68 | 68 | 74 | 77 | 84 | 90 | 90 | 87 | 82 | 74 | 68 |
| Avg. Low | 40 | 42 | 44 | 46 | 50 | 54 | 58 | 58 | 57 | 52 | 45 | 40 |
| Mean | 54 | 56 | 57 | 60 | 64 | 68 | 75 | 75 | 74 | 67 | 60 | 55 |
| Avg. Precip. | 3.4 in | 3.5 in | 2.9 in | 1.3 in | 0.3 in | 0.0 in | 0.0 in | 0.1 in | 0.4 in | 0.5 in | 2.0 in | 2.3 in |
Degrees in Fahrenheit
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