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 | 7.6 | 8.4 | 9.3 | 11 | 13.2 | 14.9 | 16.7 | 17.2 | 16.3 | 13 | 9.8 | 7.9 |
| Average low | 2.7 | 3 | 3.4 | 4.8 | 7.3 | 9.7 | 11.3 | 11.6 | 10.1 | 7.4 | 4.5 | 2.9 |
| Average | 5.2 | 5.7 | 6.4 | 7.9 | 10.3 | 12.3 | 14 | 14.4 | 13.3 | 10.2 | 7.2 | 5.4 |
| Record daily high | 17.2 | 17.2 | 18 | 22 | 26 | 26.7 | 28.9 | 27.5 | 26.5 | 21.1 | 17.8 | 14.4 |
| Date | Jan 31 1935 | Feb 28 1939 | Mar 18 1981 | Apr 25 1989 | May 24 1993 | Jun 05 1958 | Jul 12 1961 | Aug 04 1993 | Sep 09 1989 | Oct 11 1944 | Nov 02 1928 | Dec 10 1957 |
| Record daily low | -13.9 | -10.6 | -7.8 | -3.3 | 0 | 2.8 | 4.4 | 5 | -1.1 | -4.4 | -15 | -11.7 |
| Date | Jan 14 1950 | Feb 15 1956 | Mar 06 1951 | Apr 01 1936 | May 10 1932 | Jun 20 1929 | Jul 11 1929 | Aug 18 1935 | Sep 24 1934 | Oct 31 1935 | Nov 11 1944 | Dec 29 1968 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 404 | 340 | 315 | 255 | 166 | 152 | 73 | 100 | 147 | 330 | 434 | 432 |
| Annual average: 3147 | ||||||||||||
| Monthly snowfall (cm) | 7 | 6 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| Annual average: 26 | ||||||||||||
| Monthly precipitation (mm) | 411 | 346 | 320 | 258 | 166 | 152 | 73 | 100 | 147 | 330 | 437 | 438 |
| Annual average: 3176 | ||||||||||||
| Single day record rainfall (mm) | 219 | 153 | 120 | 114 | 81 | 94 | 108 | 101 | 121 | 132 | 191 | 146 |
| Date | Jan 18 1944 | Feb 11 1999 | Mar 03 1940 | Apr 04 1996 | May 23 1973 | Jun 11 1987 | Jul 07 1997 | Aug 07 1991 | Sep 05 1957 | Oct 12 1963 | Nov 06 1978 | Dec 29 1962 |
| Single day record snowfall (cm) | 26 | 52 | 31 | 14 | 1 | 0 | 0 | 0 | 0 | 1 | 16 | 26 |
| Date | Jan 28 1969 | Feb 20 1937 | Mar 06 1935 | Apr 11 1972 | May 01 1964 | Jun 01 1909 | Jul 13 1908 | Aug 01 1908 | Sep 01 1908 | Oct 31 1984 | Nov 27 1964 | Dec 27 1934 |
| Single day record precipitation (mm) | 219 | 153 | 120 | 114 | 81 | 94 | 108 | 101 | 121 | 132 | 191 | 146 |
| Date | Jan 18 1944 | Feb 11 1999 | Mar 03 1940 | Apr 04 1996 | May 23 1973 | Jun 11 1987 | Jul 07 1997 | Aug 07 1991 | Sep 05 1957 | Oct 12 1963 | Nov 06 1978 | Dec 29 1962 |