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 | 5.2 | 7.6 | 10.4 | 14.4 | 18.1 | 20.5 | 24 | 24.8 | 22.9 | 14.8 | 8.5 | 5.1 |
| Average low | 0.1 | -0 | 1.3 | 3.3 | 5.8 | 8.6 | 10.3 | 10.2 | 7.5 | 5.1 | 2.8 | 0.7 |
| Average | 2.6 | 3.8 | 5.9 | 8.9 | 12 | 14.6 | 17.2 | 17.6 | 15.3 | 9.9 | 5.7 | 3 |
| Record daily high | 13 | 18.5 | 23.5 | 29.5 | 32 | 35.5 | 36.5 | 36.5 | 36 | 29 | 15.5 | 14 |
| Date | Jan 29 1992 | Feb 27 1991 | Mar 28 1994 | Apr 30 1998 | May 01 1998 | Jun 22 1992 | Jul 26 1998 | Aug 10 1990 | Sep 02 1988 | Oct 02 1993 | Nov 14 1995 | Dec 13 1997 |
| Record daily low | -11.5 | -13.5 | -7 | -4 | -1.5 | 2 | 3.5 | 2.5 | -1.5 | -5 | -10 | -13 |
| Date | Jan 09 1993 | Feb 03 1989 | Mar 03 1989 | Apr 05 1997 | May 09 1999 | Jun 05 1988 | Jul 05 1999 | Aug 28 2000 | Sep 23 2000 | Oct 29 1991 | Nov 23 1993 | Dec 22 1998 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 332 | 229 | 207 | 149 | 96 | 76 | 35 | 54 | 55 | 228 | 379 | 309 |
| Annual average: 2150 | ||||||||||||
| Monthly snowfall (cm) | 29 | 17 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 25 |
| Annual average: 89 | ||||||||||||
| Monthly precipitation (mm) | 360 | 246 | 218 | 151 | 96 | 76 | 35 | 54 | 55 | 228 | 385 | 334 |
| Annual average: 2239 | ||||||||||||
| Single day record rainfall (mm) | 111 | 134 | 123 | 74 | 67 | 49 | 59 | 99 | 45 | 93 | 113 | 121 |
| Date | Jan 29 1992 | Feb 01 1991 | Mar 17 1997 | Apr 03 1991 | May 29 1987 | Jun 11 1987 | Jul 07 1997 | Aug 29 1991 | Sep 29 1997 | Oct 19 2000 | Nov 22 1990 | Dec 09 1995 |
| Single day record snowfall (cm) | 32 | 34 | 35 | 9 | 0 | 0 | 0 | 0 | 0 | 7 | 15 | 22 |
| Date | Jan 11 2000 | Feb 14 1995 | Mar 01 1991 | Apr 05 1988 | May 01 1987 | Jun 01 1987 | Jul 01 1987 | Aug 01 1987 | Sep 01 1987 | Oct 17 1996 | Nov 22 1994 | Dec 23 1998 |
| Single day record precipitation (mm) | 111 | 134 | 123 | 77 | 67 | 49 | 59 | 99 | 45 | 93 | 113 | 128 |
| Date | Jan 29 1992 | Feb 01 1991 | Mar 17 1997 | Apr 03 1991 | May 29 1987 | Jun 11 1987 | Jul 07 1997 | Aug 29 1991 | Sep 29 1997 | Oct 19 2000 | Nov 22 1990 | Dec 09 1995 |