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 | 4.8 | 7.1 | 10 | 13.4 | 17 | 20 | 22.9 | 23.3 | 19.8 | 13.3 | 7.7 | 4.8 |
| Average low | -0.7 | 0.1 | 1.2 | 3.5 | 6.4 | 9.2 | 11.2 | 11.1 | 8.1 | 4.8 | 1.7 | -0.1 |
| Average | 2.1 | 3.6 | 5.6 | 8.4 | 11.7 | 14.6 | 17.1 | 17.2 | 14 | 9.1 | 4.7 | 2.3 |
| Record daily high | 14 | 16.5 | 20 | 28.5 | 33 | 34 | 35 | 35.5 | 30 | 25 | 17.8 | 13.3 |
| Date | Jan 21 1981 | Feb 26 1991 | Mar 22 1979 | Apr 30 1998 | May 29 1983 | Jun 29 1987 | Jul 22 1994 | Aug 08 1978 | Sep 06 1987 | Oct 01 1992 | Nov 03 1975 | Dec 16 1976 |
| Record daily low | -17 | -15 | -9.4 | -2.5 | -1 | 1.1 | 5 | 5 | 0.5 | -7.5 | -17 | -16 |
| Date | Jan 05 1982 | Feb 03 1989 | Mar 03 1976 | Apr 18 1982 | May 01 1988 | Jun 02 1977 | Jul 07 1981 | Aug 28 1980 | Sep 28 1983 | Oct 31 1984 | Nov 23 1985 | Dec 24 1983 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 195 | 162 | 138 | 98 | 76 | 65 | 44 | 59 | 66 | 181 | 239 | 218 |
| Annual average: 1538 | ||||||||||||
| Monthly snowfall (cm) | 22 | 13 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | 18 |
| Annual average: 66 | ||||||||||||
| Monthly precipitation (mm) | 216 | 174 | 143 | 98 | 76 | 65 | 44 | 59 | 66 | 182 | 246 | 236 |
| Annual average: 1605 | ||||||||||||
| Single day record rainfall (mm) | 65 | 69 | 63 | 44 | 33 | 29 | 30 | 62 | 57 | 82 | 76 | 68 |
| Date | Jan 23 1998 | Feb 11 1999 | Mar 17 1997 | Apr 02 1982 | May 13 1984 | Jun 02 1988 | Jul 25 1995 | Aug 08 1994 | Sep 16 1997 | Oct 27 1999 | Nov 07 1995 | Dec 12 1993 |
| Single day record snowfall (cm) | 60 | 30 | 35 | 1 | 0 | 0 | 0 | 0 | 0 | 19 | 39 | 38 |
| Date | Jan 03 1978 | Feb 14 1995 | Mar 03 1996 | Apr 11 1981 | May 01 1976 | Jun 01 1976 | Jul 01 1976 | Aug 01 1976 | Sep 01 1975 | Oct 28 1975 | Nov 29 1975 | Dec 30 1981 |
| Single day record precipitation (mm) | 65 | 69 | 63 | 44 | 33 | 29 | 30 | 62 | 57 | 82 | 77 | 68 |
| Date | Jan 23 1998 | Feb 11 1999 | Mar 17 1997 | Apr 02 1982 | May 13 1984 | Jun 02 1988 | Jul 25 1995 | Aug 08 1994 | Sep 16 1997 | Oct 27 1999 | Nov 07 1995 | Dec 12 1993 |