United States vs United States · 1991–2020
Petaluma or
Rohnert Park?
Petaluma peaks in October (87), Rohnert Park in October (87). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.
| Month | Petaluma day | Petaluma rain | Rohnert Park day | Rohnert Park rain | Daylight | Better score |
|---|---|---|---|---|---|---|
| January | 14.4°C | 121 mm | 14.4°C | 121 mm | 9 h 46 / 9 h 46 | level · 30 |
| February | 16.5°C | 133 mm | 16.5°C | 133 mm | 10 h 43 / 10 h 42 | level · 37 |
| March | 18.3°C | 89 mm | 18.3°C | 89 mm | 11 h 50 / 11 h 50 | level · 52 |
| April | 19.9°C | 43 mm | 19.9°C | 43 mm | 13 h 08 / 13 h 08 | level · 68 |
| May | 22.2°C | 24 mm | 22.2°C | 24 mm | 14 h 13 / 14 h 14 | level · 83 |
| June | 25.8°C | 6 mm | 25.8°C | 6 mm | 14 h 48 / 14 h 49 | level · 86 |
| July | 27.2°C | 0 mm | 27.2°C | 0 mm | 14 h 35 / 14 h 35 | level · 83 |
| August | 27.5°C | 1 mm | 27.5°C | 1 mm | 13 h 39 / 13 h 39 | level · 83 |
| September | 27.6°C | 2 mm | 27.6°C | 2 mm | 12 h 23 / 12 h 23 | level · 81 |
| October | 24.7°C | 31 mm | 24.7°C | 31 mm | 11 h 08 / 11 h 08 | level · 87 |
| November | 18.7°C | 71 mm | 18.7°C | 71 mm | 10 h 03 / 10 h 02 | level · 58 |
| December | 14.4°C | 140 mm | 14.4°C | 140 mm | 9 h 31 / 9 h 30 | level · 27 |
Comfort scores compare climate and nothing else — not cost, crowds, flights or what there is to do when you arrive. Two places can also read stations of very different quality: check the distance in the caption above before treating a one-point gap as meaningful.