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 | 6 | 7.1 | 9 | 11.3 | 14.4 | 16.9 | 18.9 | 19.2 | 16.6 | 12.4 | 8.3 | 6.1 |
| Average low | 1.4 | 2 | 3 | 4.6 | 7.3 | 9.8 | 11.8 | 12.1 | 10.3 | 7.4 | 4 | 1.8 |
| Average | 3.7 | 4.6 | 6 | 8 | 10.9 | 13.4 | 15.4 | 15.7 | 13.5 | 9.9 | 6.2 | 4 |
| Record daily high | 16.4 | 16.4 | 22.5 | 25 | 31.3 | 27.4 | 30.5 | 31.5 | 27.5 | 21.2 | 17.5 | 17.5 |
| Date | Jan 18 1981 | Feb 24 1981 | Mar 28 1994 | Apr 30 1998 | May 29 1983 | Jun 13 1986 | Jul 18 1987 | Aug 03 1993 | Sep 08 1989 | Oct 03 1980 | Nov 20 1979 | Dec 12 1997 |
| Record daily low | -14 | -16.5 | -6 | -2.8 | 1.5 | 4.5 | 6.4 | 7.5 | 2.4 | -7 | -19 | -13 |
| Date | Jan 09 1980 | Feb 01 1989 | Mar 01 1991 | Apr 12 1981 | May 01 1998 | Jun 01 1982 | Jul 01 1979 | Aug 19 1985 | Sep 19 1983 | Oct 30 1984 | Nov 26 1985 | Dec 28 1996 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 247 | 198 | 196 | 199 | 151 | 139 | 104 | 133 | 208 | 313 | 323 | 270 |
| Annual average: 2480 | ||||||||||||
| Monthly snowfall (cm) | 10 | 18 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 10 |
| Annual average: 45 | ||||||||||||
| Monthly precipitation (mm) | 257 | 216 | 199 | 200 | 151 | 139 | 104 | 133 | 208 | 314 | 325 | 280 |
| Annual average: 2525 | ||||||||||||
| Single day record rainfall (mm) | 186 | 95 | 61 | 82 | 54 | 89 | 56 | 70 | 114 | 83 | 83 | 100 |
| Date | Jan 26 1984 | Feb 03 1992 | Mar 24 1997 | Apr 26 1998 | May 20 2000 | Jun 05 1983 | Jul 10 1983 | Aug 05 1978 | Sep 05 1980 | Oct 22 2000 | Nov 17 1989 | Dec 08 1984 |
| Single day record snowfall (cm) | 23 | 86 | 10 | 9 | 1 | 0 | 0 | 0 | 0 | 4 | 6 | 22 |
| Date | Jan 28 2001 | Feb 19 1986 | Mar 01 1987 | Apr 08 1999 | May 02 1999 | Jun 01 1978 | Jul 01 1978 | Aug 01 1978 | Sep 01 1978 | Oct 31 1984 | Nov 23 1996 | Dec 14 2000 |
| Single day record precipitation (mm) | 186 | 95 | 61 | 82 | 54 | 89 | 56 | 70 | 114 | 83 | 83 | 100 |
| Date | Jan 26 1984 | Feb 03 1992 | Mar 24 1997 | Apr 26 1998 | May 20 2000 | Jun 05 1983 | Jul 10 1983 | Aug 05 1978 | Sep 05 1980 | Oct 22 2000 | Nov 17 1989 | Dec 08 1984 |