Whether |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Boston | 24.4 | 26.8 | 36 | 46.2 | 57 | 65.7 | 71.1 | 69.4 | 61 | 50.7 | 40.8 | 29.1 |
| San Diego | 53.6 | 55.2 | 55.6 | 59.4 | 63.1 | 69.4 | 75.7 | 76.1 | 73.4 | 67.1 | 58.6 | 53.6 |
| Caracas | 74.3 | 75.7 | 77.5 | 79.3 | 78.8 | 76.8 | 75.7 | 75.7 | 76.1 | 76.3 | 76.1 | 75 |
| Paris | 38.3 | 40.8 | 44.4 | 50.7 | 56.5 | 63.1 | 65.7 | 64.6 | 61.2 | 54.1 | 45 | 38.3 |
| Guayaquil | 79.2 | 79.2 | 79.9 | 80.1 | 78.8 | 76.8 | 75.2 | 74.8 | 75.7 | 75.9 | 76.8 | 78.8 |