| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | 1.3 (34.3) | 3.2 (37.8) | 7.9 (46.2) | 13.6 (56.5) | 18.8 (65.8) | 22 (71.6) | 23.4 (74.1) | 23.2 (73.8) | 19.3 (66.7) | 14.1 (57.4) | 7.4 (45.3) | 3 (37.4) | 13.1 (55.6) | ||
| Average Temperature °C ( °F) | -1.8 (28.8) | -0.5 (31.1) | 3.2 (37.8) | 8 (46.4) | 13.1 (55.6) | 16.5 (61.7) | 17.7 (63.9) | 17.2 (63) | 13.4 (56.1) | 8.9 (48) | 3.9 (39) | 0.2 (32.4) | 8.3 (46.9) | ||
| Average Min Temperature °C ( °F) | -5.3 (22.5) | -4 (24.8) | -0.9 (30.4) | 2.8 (37) | 7.1 (44.8) | 10.7 (51.3) | 12 (53.6) | 11.6 (52.9) | 8.7 (47.7) | 4.6 (40.3) | 0.6 (33.1) | -3.1 (26.4) | 3.7 (38.7) |
