| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | -0.8 (30.6) | 1.1 (34) | 7.5 (45.5) | 15.2 (59.4) | 21.7 (71.1) | 26.7 (80.1) | 28.6 (83.5) | 27.4 (81.3) | 24 (75.2) | 17.2 (63) | 9.6 (49.3) | 1.8 (35.2) | 15 (59) | ||
| Average Temperature °C ( °F) | -5.2 (22.6) | -3.7 (25.3) | 2.2 (36) | 8.8 (47.8) | 15.1 (59.2) | 20 (68) | 22.1 (71.8) | 20.9 (69.6) | 17.4 (63.3) | 11.1 (52) | 4.8 (40.6) | -2.3 (27.9) | 9.3 (48.7) | ||
| Average Min Temperature °C ( °F) | -9.7 (14.5) | -8.7 (16.3) | -3.2 (26.2) | 2.5 (36.5) | 8.3 (46.9) | 13.3 (55.9) | 15.4 (59.7) | 14.4 (57.9) | 10.7 (51.3) | 4.9 (40.8) | 0 (32) | -6.6 (20.1) | 3.4 (38.2) |
