 | Average Precipitation mm (in) | 142.2 (5.6) | 134.9 (5.3) | 103.7 (4.1) | 98.7 (3.9) | 94.4 (3.7) | 90.8 (3.6) | 78 (3.1) | 60.3 (2.4) | 95.5 (3.8) | 106.9 (4.2) | 120.7 (4.8) | 138.5 (5.5) | | 1264.6 (49.8) |
 | Precipitation Litres/m² (Gallons/ft²) | 142.2 (3.49) | 134.9 (3.31) | 103.7 (2.54) | 98.7 (2.42) | 94.4 (2.32) | 90.8 (2.23) | 78 (1.91) | 60.3 (1.48) | 95.5 (2.34) | 106.9 (2.62) | 120.7 (2.96) | 138.5 (3.4) | | 1264.6 (31.02) |
 | Number of Wet Days (probability of rain on a day) | 18 (58%) | 16 (52%) | 14 (47%) | 14 (45%) | 12 (40%) | 12 (39%) | 10 (32%) | 9 (32%) | 10 (32%) | 13 (43%) | 15 (48%) | 16 (53%) | | 159 (43%) |
 | Percentage of Sunny (Cloudy) Daylight Hours | 37 (63) | 43 (57) | 47 (53) | 45 (55) | 44 (56) | 48 (52) | 52 (48) | 46 (54) | 50 (50) | 45 (55) | 39 (61) | 38 (62) | | 46 (54) |