| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | 0.6 (33.1) | 1.1 (34) | 4.5 (40.1) | 9.2 (48.6) | 15.6 (60.1) | 19.2 (66.6) | 20.1 (68.2) | 19.6 (67.3) | 15.8 (60.4) | 11.4 (52.5) | 6.2 (43.2) | 2.6 (36.7) | 10.5 (50.9) | ||
| Average Temperature °C ( °F) | -1.6 (29.1) | -1.6 (29.1) | 1.2 (34.2) | 5.2 (41.4) | 10.9 (51.6) | 14.9 (58.8) | 16.2 (61.2) | 15.6 (60.1) | 12.2 (54) | 8.5 (47.3) | 3.7 (38.7) | 0.3 (32.5) | 7.1 (44.8) | ||
| Average Min Temperature °C ( °F) | -3.9 (25) | -4.6 (23.7) | -2.3 (27.9) | 1.1 (34) | 5.7 (42.3) | 10.1 (50.2) | 11.5 (52.7) | 11.6 (52.9) | 8.3 (46.9) | 5.6 (42.1) | 0.7 (33.3) | -2.7 (27.1) | 3.4 (38.2) |
