US Geography / US Weather / California Weather / Petaluma |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 56 | 61 | 64 | 67 | 72 | 78 | 82 | 82 | 81 | 75 | 64 | 56 |
| Avg. Low | 36 | 38 | 41 | 42 | 46 | 50 | 51 | 52 | 51 | 47 | 41 | 37 |
| Mean | 46 | 51 | 54 | 55 | 58 | 64 | 67 | 67 | 66 | 62 | 54 | 47 |
| Avg. Precip. | 5.6 in | 4.0 in | 3.4 in | 1.5 in | 0.3 in | 0.3 in | 0.1 in | 0.1 in | 0.3 in | 1.5 in | 3.7 in | 4.1 in |
Degrees in Fahrenheit
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