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 | 6.4 | 7.8 | 9.6 | 11.9 | 15.4 | 17.7 | 20.8 | 20.9 | 18.4 | 13.3 | 8.9 | 6.8 |
| Average low | 1.5 | 2 | 2.7 | 4 | 6.6 | 9.1 | 11.2 | 11.7 | 9.5 | 6.8 | 3.8 | 2 |
| Average | 4 | 4.9 | 6.2 | 8 | 11 | 13.5 | 16.1 | 16.4 | 13.9 | 10.1 | 6.3 | 4.4 |
| Record daily high | 20.5 | 19 | 21.5 | 25.5 | 31.5 | 32.8 | 35.5 | 34.5 | 29.5 | 26.5 | 22.8 | 17.2 |
| Date | Jan 12 1986 | Feb 26 1992 | Mar 28 1994 | Apr 30 1989 | May 29 1983 | Jun 09 1969 | Jul 21 1990 | Aug 04 1993 | Sep 22 1990 | Oct 01 1987 | Nov 02 1962 | Dec 12 1962 |
| Record daily low | -12.2 | -11.5 | -5 | -1.7 | 0.6 | 1.1 | 5 | 4.5 | 0 | -4 | -11.5 | -12.8 |
| Date | Jan 28 1969 | Feb 01 1989 | Mar 03 1960 | Apr 01 1976 | May 04 1965 | Jun 09 1971 | Jul 01 1972 | Aug 30 1980 | Sep 26 1972 | Oct 31 1984 | Nov 27 1985 | Dec 29 1968 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 429 | 373 | 318 | 242 | 148 | 99 | 58 | 95 | 155 | 397 | 520 | 467 |
| Annual average: 3299 | ||||||||||||
| Monthly snowfall (cm) | 12 | 10 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
| Annual average: 38 | ||||||||||||
| Monthly precipitation (mm) | 441 | 382 | 324 | 242 | 148 | 99 | 58 | 95 | 155 | 398 | 522 | 475 |
| Annual average: 3337 | ||||||||||||
| Single day record rainfall (mm) | 195 | 219 | 127 | 126 | 84 | 94 | 100 | 166 | 134 | 197 | 234 | 221 |
| Date | Jan 09 1986 | Feb 13 1994 | Mar 21 1993 | Apr 04 1996 | May 24 1986 | Jun 08 1930 | Jul 06 1964 | Aug 07 1991 | Sep 19 1987 | Oct 24 1947 | Nov 12 1975 | Dec 03 1990 |
| Single day record snowfall (cm) | 41 | 53 | 25 | 5 | 1 | 0 | 0 | 0 | 0 | 3 | 18 | 46 |
| Date | Jan 04 1965 | Feb 27 1933 | Mar 05 1935 | Apr 09 1966 | May 02 1952 | Jun 01 1924 | Jul 01 1924 | Aug 01 1924 | Sep 01 1924 | Oct 31 1984 | Nov 30 1990 | Dec 25 1934 |
| Single day record precipitation (mm) | 195 | 221 | 127 | 126 | 84 | 94 | 100 | 166 | 134 | 197 | 234 | 221 |
| Date | Jan 09 1986 | Feb 13 1994 | Mar 21 1993 | Apr 04 1996 | May 24 1986 | Jun 08 1930 | Jul 06 1964 | Aug 07 1991 | Sep 19 1987 | Oct 24 1947 | Nov 12 1975 | Dec 03 1990 |