| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | 5.4 (41.7) | 7.3 (45.1) | 9.4 (48.9) | 12.5 (54.5) | 16.5 (61.7) | 19.8 (67.6) | 22.5 (72.5) | 22.4 (72.3) | 18.5 (65.3) | 12.9 (55.2) | 8.4 (47.1) | 6 (42.8) | 13.5 (56.2) | ||
| Average Temperature °C ( °F) | 2.7 (36.9) | 4.2 (39.6) | 5.6 (42.1) | 8.2 (46.8) | 11.8 (53.2) | 15.1 (59.2) | 17.4 (63.3) | 17.3 (63.1) | 13.8 (56.8) | 9.2 (48.6) | 5.4 (41.7) | 3.4 (38.1) | 9.5 (49.1) | ||
| Average Min Temperature °C ( °F) | -0.1 (31.8) | 1 (33.8) | 1.8 (35.2) | 3.9 (39) | 7 (44.6) | 10.4 (50.7) | 12.3 (54.1) | 12.3 (54.1) | 9.1 (48.4) | 5.5 (41.9) | 2.4 (36.3) | 0.7 (33.3) | 5.5 (41.9) |
