| Climate Variable | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | 5 (42) | 5 (41) | 6 (43) | 8 (46) | 10 (50) | 13 (55) | 14 (57) | 14 (57) | 12 (54) | 10 (50) | 7 (45) | 6 (43) | 9 (49) | ||
| Average Temperature °C ( °F) | 3 (38) | 3 (38) | 4 (39) | 5 (41) | 8 (46) | 10 (50) | 11 (53) | 12 (53) | 10 (50) | 8 (47) | 5 (41) | 4 (39) | 7 (45) | ||
| Average Min Temperature °C ( °F) | 1 (34) | 1 (34) | 2 (35) | 3 (37) | 5 (41) | 8 (46) | 9 (48) | 10 (49) | 8 (46) | 6 (43) | 3 (38) | 2 (35) | 5 (41) | ||
| Average Precipitation mm (in) | 131 (5) | 92 (4) | 114 (4) | 72 (3) | 62 (2) | 60 (2) | 62 (2) | 79 (3) | 118 (5) | 134 (5) | 143 (6) | 142 (6) | 1209 (48) | ||
| Number of Wet Days (probability of rain on a day %) | 25 (81) | 22 (78) | 20 (65) | 21 (70) | 15 (48) | 15 (50) | 17 (55) | 17 (55) | 19 (63) | 23 (74) | 24 (80) | 25 (81) | 243 (67) | ||
| Average Sunlight Hours/ Day | 0h 48' | 1h 48' | 2h 54' | 4h 24' | 5h 19' | 5h 16' | 4h 01' | 3h 46' | 3h 30' | 2h 09' | 1h 06' | 0h 27' | 2h 57' | ||
| Average Daylight Hours/ Day | 6h 48' | 9h 05' | 11h 47' | 14h 37' | 17h 14' | 18h 46' | 18h 03' | 15h 41' | 12h 53' | 10h 03' | 7h 27' | 5h 59' | 12h 00' | ||
| Percentage of Sunny (Cloudy) Daylight Hours | 13 (87) | 21 (79) | 25 (75) | 31 (69) | 32 (68) | 29 (71) | 23 (77) | 25 (75) | 28 (72) | 22 (78) | 16 (84) | 8 (92) | 25 (75) | ||
| Sun altitude at solar noon on the 21st day (°). | 10.1 | 19.4 | 30.2 | 41.8 | 50.1 | 53.3 | 50.3 | 41.9 | 30.5 | 19.1 | 9.9 | 6.5 | 30.2 |