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 | 5.5 | 7.5 | 9.9 | 12.8 | 16.4 | 18.9 | 21.9 | 22.3 | 19 | 13.7 | 8.3 | 5.6 |
| Average low | 0.6 | 1.6 | 3.1 | 5.1 | 8.2 | 10.8 | 12.9 | 13.3 | 10.9 | 7.3 | 3.5 | 0.9 |
| Average | 3 | 4.6 | 6.5 | 9 | 12.3 | 14.8 | 17.4 | 17.8 | 15 | 10.5 | 5.9 | 3.3 |
| Record daily high | 16.5 | 19 | 23 | 28 | 34.5 | 33.5 | 33.5 | 34 | 32.5 | 28 | 19 | 15.5 |
| Date | Jan 20 1981 | Feb 27 1986 | Mar 28 1994 | Apr 27 1987 | May 29 1983 | Jun 03 1989 | Jul 20 1994 | Aug 08 1981 | Sep 02 1996 | Oct 01 1987 | Nov 02 1981 | Dec 02 1996 |
| Record daily low | -14 | -13 | -7.8 | -1 | 1.7 | 4.4 | -13 | 7.2 | 1 | -7 | -15.5 | -16 |
| Date | Jan 01 1979 | Feb 02 1989 | Mar 03 1976 | Apr 30 1986 | May 01 1972 | Jun 03 1976 | Jul 31 1988 | Aug 18 1973 | Sep 04 2000 | Oct 31 1984 | Nov 27 1985 | Dec 29 1990 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 227 | 188 | 179 | 142 | 108 | 90 | 68 | 66 | 91 | 186 | 294 | 258 |
| Annual average: 1896 | ||||||||||||
| Monthly snowfall (cm) | 23 | 12 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 18 |
| Annual average: 58 | ||||||||||||
| Monthly precipitation (mm) | 250 | 200 | 181 | 143 | 108 | 90 | 68 | 66 | 91 | 186 | 297 | 276 |
| Annual average: 1955 | ||||||||||||
| Single day record rainfall (mm) | 103 | 82 | 92 | 59 | 60 | 49 | 97 | 70 | 61 | 88 | 80 | 112 |
| Date | Jan 03 1984 | Feb 02 1974 | Mar 18 1997 | Apr 19 1997 | May 17 1989 | Jun 28 1984 | Jul 11 1972 | Aug 26 1991 | Sep 16 1985 | Oct 16 1975 | Nov 20 1980 | Dec 25 1972 |
| Single day record snowfall (cm) | 25 | 24 | 18 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 33 |
| Date | Jan 11 1971 | Feb 14 1995 | Mar 01 1991 | Apr 03 1982 | May 01 1971 | Jun 01 1971 | Jul 01 1971 | Aug 01 1971 | Sep 01 1971 | Oct 31 1984 | Nov 26 1985 | Dec 13 1971 |
| Single day record precipitation (mm) | 103 | 82 | 92 | 59 | 60 | 49 | 97 | 70 | 61 | 88 | 80 | 112 |
| Date | Jan 03 1984 | Feb 02 1974 | Mar 18 1997 | Apr 19 1997 | May 17 1989 | Jun 28 1984 | Jul 11 1972 | Aug 26 1991 | Sep 16 1985 | Oct 16 1975 | Nov 20 1980 | Dec 25 1972 |