Annual | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual average temperature (˚C) |
1977-1978 | −4.7 | −3.9 | 5.4 | 12.7 | 17.4 | 20.9 | 23.2 | 21.1 | 17.0 | 12.2 | 3.0 | −1.6 | 10.23 |
2008-2009 | −5.1 | 1.5 | 6.7 | 14.9 | 19.2 | 24.5 | 24.9 | 23.5 | 17.8 | 11.5 | 3.9 | −2.7 | 11.72 |
Temperature difference | −1.4 | 5.4 | 1.3 | 2.2 | 1.8 | 3.6 | 1.7 | 2.4 | 0.8 | −0.7 | 0.9 | −1.1 | 1.49 |