 | Average Precipitation mm (in) | 0 (0) | 0 (0) | 0 (0) | 0.4 (0) | 4 (0.2) | 5.4 (0.2) | 46.3 (1.8) | 75.2 (3) | 25.4 (1) | 4.8 (0.2) | 0.7 (0) | 0 (0) | | 162.2 (6.4) |
 | Precipitation Litres/m² (Gallons/ft²) | 0 (0) | 0 (0) | 0 (0) | 0.4 (0.01) | 4 (0.1) | 5.4 (0.13) | 46.3 (1.14) | 75.2 (1.84) | 25.4 (0.62) | 4.8 (0.12) | 0.7 (0.02) | 0 (0) | | 162.2 (3.98) |
 | Number of Wet Days (probability of rain on a day) | 0 (0%) | 0 (0%) | 0 (0%) | 0.5 (2%) | 1 (3%) | 1 (3%) | 5 (16%) | 7 (23%) | 3 (10%) | 1 (3%) | 0.5 (2%) | 0 (0%) | | 19 (5%) |
 | Percentage of Sunny (Cloudy) Daylight Hours | 95 (5) | 88 (12) | 87 (13) | 84 (16) | 79 (21) | 73 (27) | 65 (35) | 69 (31) | 74 (26) | 88 (12) | 93 (7) | 95 (5) | | 84 (16) |