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 | 5.8 | 7 | 8.8 | 11.1 | 13.8 | 15.5 | 17.6 | 17.9 | 15.7 | 11.8 | 7.9 | 5.9 |
| Average low | 0.8 | 1.3 | 1.8 | 3.1 | 5.7 | 8.3 | 10.2 | 10.3 | 8.1 | 5.5 | 2.7 | 1.1 |
| Average | 3.3 | 4.2 | 5.3 | 7.2 | 9.8 | 11.9 | 13.9 | 14.1 | 11.9 | 8.7 | 5.4 | 3.5 |
| Record daily high | 13.7 | 16.7 | 19.8 | 23.3 | 33.4 | 31.7 | 26.7 | 28.3 | 25.6 | 25.6 | 18.9 | 14.8 |
| Date | Jan 21 1981 | Feb 27 1968 | Mar 29 1994 | Apr 27 1987 | May 29 1983 | Jun 09 1955 | Jul 12 1961 | Aug 09 1960 | Sep 15 1967 | Oct 01 1987 | Nov 02 1949 | Dec 26 1980 |
| Record daily low | -14.4 | -11.8 | -12.8 | -3.3 | -1.1 | 1.7 | 2.8 | 3.3 | -9.9 | -5.4 | -12.5 | -12.2 |
| Date | Jan 14 1950 | Feb 02 1989 | Mar 06 1951 | Apr 30 1954 | May 03 1956 | Jun 01 1972 | Jul 03 1949 | Aug 19 1973 | Sep 12 2000 | Oct 31 1984 | Nov 27 1985 | Dec 28 1968 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Monthly rainfall (mm) | 219 | 162 | 140 | 117 | 77 | 88 | 54 | 68 | 109 | 235 | 284 | 255 |
| Annual average: 1808 | ||||||||||||
| Monthly snowfall (cm) | 19 | 12 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 13 |
| Annual average: 55 | ||||||||||||
| Monthly precipitation (mm) | 238 | 174 | 149 | 119 | 78 | 88 | 54 | 68 | 109 | 235 | 288 | 269 |
| Annual average: 1869 | ||||||||||||
| Single day record rainfall (mm) | 98 | 70 | 58 | 75 | 38 | 42 | 36 | 64 | 96 | 114 | 87 | 154 |
| Date | Jan 17 1947 | Feb 11 1999 | Mar 04 1987 | Apr 19 1986 | May 22 1951 | Jun 23 1955 | Jul 18 1966 | Aug 22 1993 | Sep 30 1962 | Oct 22 1977 | Nov 25 1963 | Dec 10 1980 |
| Single day record snowfall (cm) | 29 | 26 | 21 | 8 | 2 | 0 | 0 | 0 | 0 | 4 | 14 | 23 |
| Date | Jan 20 1954 | Feb 10 1982 | Mar 22 1948 | Apr 21 1999 | May 03 1984 | Jun 01 1944 | Jul 01 1944 | Aug 01 1944 | Sep 01 1944 | Oct 26 1971 | Nov 30 1975 | Dec 20 1997 |
| Single day record precipitation (mm) | 98 | 70 | 66 | 75 | 38 | 42 | 36 | 64 | 96 | 114 | 87 | 154 |
| Date | Jan 17 1947 | Feb 11 1999 | Mar 23 1972 | Apr 19 1986 | May 22 1951 | Jun 23 1955 | Jul 18 1966 | Aug 22 1993 | Sep 30 1962 | Oct 22 1977 | Nov 25 1963 | Dec 10 1980 |