| Average Precipitation mm (in) | 44.7 (1.76) | 44.2 (1.7) | 64.8 (2.6) | 74.9 (2.9) | 74.2 (2.9) | 91.7 (3.6) | 80.8 (3.2) | 87.1 (3.4) | 73.4 (2.9) | 53.3 (2.1) | 67.8 (2.7) | 71.6 (2.8) | | 828.5 (32.6) |
| Precipitation Litres/m² (Gallons/ft²) | 44.7 (1.1) | 44.2 (1.08) | 64.8 (1.59) | 74.9 (1.84) | 74.2 (1.82) | 91.7 (2.25) | 80.8 (1.98) | 87.1 (2.14) | 73.4 (1.8) | 53.3 (1.31) | 67.8 (1.66) | 71.6 (1.76) | | 828.5 (20.32) |
| Number of Wet Days (probability of rain on a day) | 13 (42%) | 12 (42%) | 13 (42%) | 12 (40%) | 12 (39%) | 11 (37%) | 8 (26%) | 8 (26%) | 9 (30%) | 9 (29%) | 11 (37%) | 13 (42%) | | 131 (36%) |
| Percentage of Sunny (Cloudy) Daylight Hours | 30 (70) | 37 (63) | 47 (53) | 50 (50) | 58 (42) | 63 (37) | 62 (38) | 69 (31) | 63 (37) | 59 (41) | 34 (66) | 33 (67) | | 53 (47) |