The weather statistics displayed here represent the value of each meteorological parameter for each month of the year. The sampling period for this data covers 30 years. Record maximums and minimums are updated annually.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Average high | 5.2 | 8.3 | 11.3 | 15.3 | 18.6 | 21 | 24.4 | 24.5 | 21.8 | 15.2 | 9.1 | 5.9 |
| Average low | -0.5 | 1.1 | 2.7 | 5 | 8.1 | 10.7 | 12.5 | 12.2 | 9.6 | 6.4 | 3 | 0.4 |
| Average | 2.3 | 4.7 | 7 | 10.2 | 13.4 | 15.9 | 18.5 | 18.4 | 15.7 | 10.8 | 6.1 | 3.1 |
| Record daily high | 18.3 | 20.6 | 24.5 | 32.2 | 34.5 | 36.7 | 37.8 | 36.1 | 36.5 | 27.8 | 21.1 | 19 |
| Date | Jan 09 1953 | Feb 27 1968 | Mar 28 1994 | Apr 29 1900 | May 12 1993 | Jun 08 1903 | Jul 27 1958 | Aug 09 1960 | Sep 03 1988 | Oct 06 1952 | Nov 01 1954 | Dec 27 1980 |
| Record daily low | -20.6 | -16.7 | -14.4 | -6.1 | -1.7 | 1.1 | 3.3 | 2.8 | -2.8 | -7.2 | -14.4 | -21.7 |
| Date | Jan 13 1911 | Feb 15 1956 | Mar 04 1955 | Apr 20 1927 | May 13 1920 | Jun 19 1911 | Jul 23 1917 | Aug 13 1881 | Sep 25 1908 | Oct 27 1919 | Nov 14 1955 | Dec 29 1968 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 192 | 148 | 164 | 119 | 99 | 93 | 54 | 61 | 82 | 167 | 257 | 242 |
| Annual average: 1679 | ||||||||||||
| Monthly snowfall (cm) | 40 | 17 | 9 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 29 |
| Annual average: 107 | ||||||||||||
| Monthly precipitation (mm) | 232 | 165 | 173 | 120 | 99 | 93 | 54 | 61 | 82 | 167 | 268 | 272 |
| Annual average: 1787 | ||||||||||||
| Single day record rainfall (mm) | 120 | 122 | 114 | 87 | 84 | 70 | 65 | 45 | 86 | 119 | 116 | 123 |
| Date | Jan 04 1914 | Feb 26 1932 | Mar 31 1959 | Apr 29 1959 | May 01 1956 | Jun 01 1968 | Jul 08 1997 | Aug 26 1991 | Sep 23 1903 | Oct 24 1945 | Nov 02 1955 | Dec 13 1979 |
| Single day record snowfall (cm) | 60 | 66 | 47 | 15 | 0 | 0 | 0 | 0 | 0 | 5 | 67 | 42 |
| Date | Jan 16 1962 | Feb 14 1923 | Mar 01 1919 | Apr 11 1981 | May 01 1879 | Jun 01 1879 | Jul 01 1879 | Aug 01 1879 | Sep 01 1879 | Oct 16 1930 | Nov 16 1996 | Dec 28 1996 |
| Single day record precipitation (mm) | 120 | 122 | 114 | 87 | 84 | 70 | 65 | 45 | 86 | 119 | 116 | 123 |
| Date | Jan 04 1914 | Feb 26 1932 | Mar 31 1959 | Apr 29 1959 | May 01 1956 | Jun 01 1968 | Jul 08 1997 | Aug 26 1991 | Sep 23 1903 | Oct 24 1945 | Nov 02 1955 | Dec 13 1979 |