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 | 4.6 | 6.2 | 8.4 | 11.6 | 15.1 | 17.4 | 19.8 | 19.5 | 16.2 | 11.2 | 7 | 4.9 |
| Average low | 1.5 | 2.3 | 3.3 | 5.1 | 7.7 | 10 | 11.8 | 12 | 10 | 7 | 3.8 | 1.9 |
| Average | 3.1 | 4.2 | 5.8 | 8.4 | 11.4 | 13.7 | 15.8 | 15.8 | 13.1 | 9.1 | 5.5 | 3.4 |
| Record daily high | 13.3 | 13.8 | 16.7 | 24.7 | 31.2 | 30 | 33.3 | 31.1 | 26.4 | 19.3 | 15.6 | 12.8 |
| Date | Jan 20 1968 | Feb 08 1995 | Mar 11 1965 | Apr 30 1998 | May 29 1983 | Jun 19 1967 | Jul 12 1961 | Aug 08 1960 | Sep 08 1989 | Oct 01 1987 | Nov 02 1970 | Dec 14 1962 |
| Record daily low | -10.6 | -11.5 | -6.1 | -0.6 | 0 | 4.4 | 6.7 | 7.2 | 1.7 | -3.9 | -13 | -15 |
| Date | Jan 22 1969 | Feb 02 1989 | Mar 03 1976 | Apr 03 1972 | May 03 1969 | Jun 12 1976 | Jul 05 1971 | Aug 18 1973 | Sep 27 1972 | Oct 31 1984 | Nov 27 1985 | Dec 28 1968 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 241 | 217 | 199 | 151 | 126 | 129 | 79 | 98 | 112 | 267 | 315 | 266 |
| Annual average: 2201 | ||||||||||||
| Monthly snowfall (cm) | 24 | 13 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 9 | 19 |
| Annual average: 73 | ||||||||||||
| Monthly precipitation (mm) | 265 | 231 | 205 | 153 | 126 | 129 | 79 | 98 | 112 | 267 | 324 | 285 |
| Annual average: 2274 | ||||||||||||
| Single day record rainfall (mm) | 84 | 78 | 79 | 53 | 61 | 62 | 78 | 114 | 71 | 91 | 122 | 84 |
| Date | Jan 13 1968 | Feb 08 1979 | Mar 26 1974 | Apr 15 1997 | May 05 1993 | Jun 19 1986 | Jul 11 1972 | Aug 11 1978 | Sep 20 1972 | Oct 20 1963 | Nov 17 1995 | Dec 03 1990 |
| Single day record snowfall (cm) | 34 | 25 | 20 | 23 | 0 | 0 | 0 | 0 | 0 | 12 | 26 | 35 |
| Date | Jan 03 1978 | Feb 24 1979 | Mar 04 1962 | Apr 10 1972 | May 01 1959 | Jun 01 1959 | Jul 01 1958 | Aug 01 1958 | Sep 01 1958 | Oct 31 1984 | Nov 16 1996 | Dec 19 1964 |
| Single day record precipitation (mm) | 84 | 96 | 79 | 53 | 61 | 62 | 78 | 114 | 71 | 91 | 122 | 84 |
| Date | Jan 13 1968 | Feb 24 1979 | Mar 26 1974 | Apr 15 1997 | May 05 1993 | Jun 19 1986 | Jul 11 1972 | Aug 11 1978 | Sep 20 1972 | Oct 20 1963 | Nov 17 1995 | Dec 03 1990 |