year,jan,feb,mar,apr,may,jun,jul,aug,sep,oct,nov,dec,win,spr,sum,aut,ann
1884,5.8,4.3,5.2,6.1,9.7,12.4,14.3,15.2,13.3,8.8,5.4,4.2,---,6.98,13.96,9.17,8.73
1885,2.6,4.9,3.7,6.4,7.5,12.4,14.4,12.7,11.2,6.6,5.3,3.0,3.88,5.87,13.19,7.68,7.58
1886,1.4,1.2,2.7,6.9,9.4,12.3,14.5,14.4,12.3,10.2,6.4,2.3,1.89,6.32,13.76,9.66,7.88
1887,2.4,3.3,2.9,5.2,8.4,14.6,15.5,14.0,10.7,6.6,3.9,2.6,2.66,5.50,14.71,7.07,7.54
1888,2.6,1.2,2.3,5.5,9.5,12.3,12.7,13.0,11.3,7.9,7.1,4.7,2.17,5.80,12.67,8.77,7.54
1889,3.2,2.6,3.8,6.0,10.9,13.9,13.9,13.4,12.2,7.9,6.5,3.3,3.52,6.92,13.75,8.85,8.17
1890,5.3,2.4,5.3,6.5,10.6,12.4,13.2,13.2,13.7,9.1,5.8,-0.7,3.75,7.48,12.92,9.55,8.10
1891,1.5,4.7,3.4,5.6,8.6,13.6,13.6,12.9,13.3,8.6,5.2,4.1,1.71,5.88,13.34,9.01,7.92
1892,1.8,3.1,2.1,6.8,10.2,12.2,13.2,14.0,11.2,6.3,6.4,2.5,2.99,6.37,13.11,7.95,7.48
1893,2.0,4.2,6.9,9.9,12.2,14.5,15.4,16.1,12.2,9.2,4.7,4.6,2.81,9.67,15.34,8.72,9.35
1894,2.9,4.6,6.0,8.9,8.2,12.6,14.6,13.1,10.8,8.7,7.2,5.0,4.01,7.69,13.43,8.91,8.57
1895,-0.4,-2.8,4.3,7.3,11.0,13.3,14.0,14.2,14.7,6.5,6.8,3.5,0.72,7.52,13.84,9.31,7.75
1896,4.2,4.2,6.0,8.4,11.3,14.8,15.0,13.3,12.1,6.1,3.6,3.2,3.95,8.55,14.37,7.24,8.52
1897,1.1,5.3,5.5,6.5,9.1,14.1,15.6,14.9,11.2,9.7,7.0,4.6,3.11,7.04,14.87,9.30,8.73
1898,5.7,4.0,3.4,7.5,9.3,12.5,14.3,15.0,13.9,10.4,6.7,7.0,4.81,6.72,13.98,10.32,9.18
1899,4.4,4.7,4.7,7.1,9.1,14.4,15.5,17.1,12.6,8.9,8.1,1.9,5.36,6.97,15.67,9.88,9.06
1900,4.1,2.4,2.5,7.3,8.8,13.0,15.7,14.0,12.6,8.9,6.3,6.6,2.82,6.20,14.24,9.23,8.54
1901,3.0,1.7,3.4,7.5,10.8,12.4,16.2,14.6,12.7,9.0,4.5,3.2,3.81,7.22,14.43,8.73,8.28
1902,4.3,1.1,6.0,6.4,7.9,12.6,13.3,13.3,11.9,9.0,6.3,4.1,2.92,6.77,13.07,9.04,8.05
1903,3.6,6.0,6.0,5.8,9.8,11.4,13.4,12.9,11.8,9.8,6.2,3.2,4.51,7.21,12.57,9.28,8.34
1904,3.9,3.3,3.7,7.6,9.2,12.0,15.2,13.6,11.7,9.3,5.3,4.0,3.47,6.82,13.59,8.75,8.24
1905,3.6,4.6,5.9,6.7,9.7,13.3,15.0,13.3,11.2,6.9,4.6,4.9,4.06,7.45,13.89,7.54,8.33
1906,5.0,2.9,4.3,6.2,8.9,12.7,13.9,15.3,12.6,10.0,6.6,3.6,4.30,6.46,13.96,9.71,8.52
1907,3.4,2.3,5.5,6.5,9.3,11.0,13.5,13.1,13.2,8.9,6.3,4.5,3.12,7.12,12.55,9.48,8.17
1908,2.4,4.9,3.7,5.4,10.9,12.8,14.5,13.7,12.1,11.7,7.3,4.5,3.91,6.71,13.66,10.37,8.67
1909,3.5,2.9,2.9,7.7,9.8,11.0,13.3,14.2,11.2,9.8,4.6,3.9,3.65,6.80,12.83,8.56,7.93
1910,3.4,4.7,5.5,6.3,10.2,13.3,13.4,13.8,11.9,9.7,3.9,5.8,3.99,7.36,13.52,8.51,8.53
1911,3.6,4.1,4.6,6.4,11.7,13.3,16.4,16.9,13.0,9.2,5.6,5.9,4.48,7.54,15.56,9.28,9.26
1912,3.4,4.7,6.4,8.2,10.6,12.3,14.8,11.8,10.5,7.9,6.1,6.5,4.64,8.42,12.99,8.16,8.62
1913,4.3,4.3,5.4,7.1,9.9,12.6,13.9,14.5,13.2,10.5,8.0,5.0,5.08,7.46,13.67,10.55,9.08
1914,3.1,6.0,5.5,8.9,9.6,13.3,14.6,15.1,12.8,9.8,6.2,4.2,4.66,8.02,14.35,9.56,9.10
1915,3.8,3.6,4.4,7.2,10.3,13.2,13.4,14.1,12.7,8.6,2.7,5.2,3.85,7.30,13.57,8.01,8.29
1916,6.9,3.3,2.8,7.2,9.9,10.7,14.2,15.2,12.5,10.1,6.1,2.0,5.19,6.61,13.39,9.60,8.44
1917,0.9,0.7,2.8,4.7,11.4,13.1,14.9,14.1,13.0,7.4,7.6,2.5,1.21,6.31,14.05,9.29,7.79
1918,3.8,6.2,5.1,6.3,11.3,11.9,14.1,14.8,11.2,8.6,5.5,6.9,4.10,7.58,13.63,8.43,8.83
1919,2.9,1.5,2.8,6.0,12.0,12.6,13.2,14.4,11.8,7.6,2.9,5.4,3.80,6.92,13.42,7.45,7.80
1920,4.8,5.6,6.0,7.3,10.3,13.1,13.0,12.8,12.0,10.1,6.9,3.9,5.25,7.86,12.99,9.66,8.82
1921,6.7,4.4,6.4,7.4,9.9,13.5,17.0,14.1,13.1,12.2,5.2,6.2,5.00,7.92,14.88,10.17,9.71
1922,3.8,4.3,4.2,4.9,11.1,12.3,12.3,12.3,11.4,7.8,5.6,5.5,4.80,6.72,12.31,8.25,7.98
1923,5.2,5.5,5.9,6.9,8.3,11.5,15.7,13.9,11.3,9.1,3.3,4.3,5.40,7.06,13.72,7.94,8.45
1924,4.5,3.0,3.9,6.1,10.2,12.4,13.8,13.0,12.2,9.6,6.5,6.7,3.93,6.72,13.07,9.44,8.51
1925,5.2,4.5,4.4,6.6,10.0,13.7,15.3,14.5,10.8,9.9,3.3,3.0,5.51,7.02,14.49,8.03,8.46
1926,4.7,6.1,5.7,8.3,9.2,12.0,15.8,15.1,13.5,7.6,5.3,4.0,4.53,7.71,14.34,8.79,8.95
1927,4.5,3.8,6.3,7.0,10.3,11.4,14.6,14.4,11.6,9.9,5.9,1.8,4.08,7.87,13.49,9.15,8.49
1928,4.8,5.4,5.1,7.6,10.2,11.9,14.3,14.0,11.7,9.8,7.3,3.6,3.98,7.63,13.41,9.61,8.82
1929,1.6,0.5,5.6,6.1,10.2,11.8,14.4,13.7,14.0,9.0,6.4,5.5,1.94,7.30,13.34,9.81,8.29
1930,4.8,1.8,4.5,7.2,9.6,13.6,13.9,14.2,12.7,9.9,6.1,4.5,4.12,7.11,13.91,9.58,8.61
1931,3.3,3.7,3.7,6.6,9.8,12.9,13.8,13.5,11.0,8.3,7.3,5.4,3.82,6.69,13.41,8.88,8.29
1932,5.8,2.7,4.1,5.8,9.0,13.2,14.5,15.9,12.3,8.3,6.2,5.3,4.66,6.30,14.55,8.91,8.61
1933,2.1,3.4,6.6,7.7,10.7,13.9,16.0,16.0,14.1,9.5,5.1,1.1,3.60,8.35,15.31,9.56,8.87
1934,4.1,3.2,4.3,6.7,9.9,13.8,16.8,13.8,13.2,9.7,5.7,7.5,2.78,6.95,14.80,9.50,9.08
1935,4.3,5.2,5.7,7.2,9.5,13.4,15.5,14.9,12.6,8.9,6.0,3.0,5.66,7.49,14.63,9.15,8.87
1936,3.3,2.5,6.1,5.5,10.4,13.2,13.8,14.7,13.3,9.0,5.6,5.3,2.94,7.39,13.93,9.30,8.60
1937,4.8,5.1,2.9,8.5,10.8,12.6,14.4,15.5,12.4,9.5,5.1,3.0,5.07,7.38,14.19,9.00,8.73
1938,5.4,4.5,7.6,6.8,9.7,12.5,13.3,14.4,12.5,10.1,8.7,4.4,4.27,8.04,13.39,10.40,9.17
1939,3.8,4.9,5.3,7.7,10.4,13.2,13.7,15.2,13.0,7.8,8.2,3.2,4.33,7.79,14.05,9.63,8.88
1940,-0.7,2.9,5.3,7.9,11.1,14.9,13.6,14.5,11.8,9.0,6.6,4.0,1.76,8.10,14.33,9.14,8.42
1941,0.0,3.0,4.6,5.8,8.4,13.5,15.3,13.6,13.9,10.0,6.4,5.7,2.32,6.25,14.12,10.11,8.37
1942,2.0,0.4,5.2,8.5,10.0,13.0,14.0,15.0,12.6,9.7,4.9,6.7,2.76,7.90,14.01,9.07,8.55
1943,5.0,5.6,6.1,9.3,10.4,12.8,14.9,14.4,11.9,9.8,6.3,3.4,5.76,8.60,14.04,9.38,9.18
1944,5.8,3.3,4.7,9.0,10.0,12.3,14.9,15.5,11.5,8.5,6.1,4.1,4.18,7.90,14.25,8.70,8.83
1945,0.6,6.1,6.9,9.2,10.7,12.8,14.6,14.6,13.2,11.0,6.7,5.3,3.53,8.91,14.03,10.31,9.32
1946,2.8,5.5,4.5,8.8,9.7,11.4,14.1,13.0,12.8,9.2,7.8,3.3,4.49,7.65,12.83,9.89,8.56
1947,2.0,-2.3,3.1,7.3,11.4,13.5,14.7,17.2,13.6,9.9,6.9,4.9,1.10,7.27,15.17,10.12,8.59
1948,4.8,4.0,7.8,7.7,10.2,12.1,14.2,13.8,12.7,9.6,7.5,5.2,4.57,8.59,13.39,9.92,9.15
1949,5.2,5.1,5.0,8.6,9.9,13.9,16.2,15.3,14.9,11.2,6.5,5.5,5.19,7.82,15.14,10.86,9.80
1950,4.0,4.9,6.8,6.8,10.5,14.4,14.4,13.9,11.9,9.0,5.3,1.4,4.77,8.04,14.23,8.73,8.62
1951,3.5,3.1,3.4,5.9,9.0,12.8,14.8,13.5,13.1,9.3,7.6,5.4,2.68,6.10,13.69,10.00,8.48
1952,2.8,3.2,6.1,8.2,11.8,12.5,15.2,14.5,10.2,8.5,4.1,3.4,3.79,8.73,14.10,7.60,8.40
1953,3.2,3.6,5.2,6.5,11.5,13.0,14.3,14.8,12.9,9.2,8.1,7.0,3.40,7.72,14.01,10.06,9.13
1954,2.9,2.5,5.3,6.8,10.1,12.2,12.7,13.2,11.9,11.1,6.6,6.3,4.17,7.42,12.69,9.88,8.50
1955,2.6,0.9,2.7,8.2,8.7,12.7,16.4,17.0,13.2,8.8,6.3,5.7,3.33,6.50,15.40,9.44,8.64
1956,3.7,-0.4,5.8,6.3,10.4,12.0,14.5,12.5,13.3,9.0,6.0,5.6,3.07,7.49,13.00,9.42,8.25
1957,4.9,4.6,8.7,8.1,9.7,13.9,15.0,14.4,11.7,10.2,5.8,4.3,5.04,8.85,14.42,9.26,9.31
1958,3.6,4.7,3.3,6.5,9.9,12.5,14.4,14.3,13.9,10.0,6.4,4.4,4.17,6.56,13.74,10.13,8.68
1959,2.2,4.4,6.6,8.2,11.7,13.6,15.3,15.6,13.8,11.8,6.9,5.5,3.62,8.83,14.84,10.86,9.66
1960,3.8,3.3,5.8,7.8,11.7,14.6,13.8,13.7,12.0,9.2,6.5,3.5,4.20,8.44,14.02,9.24,8.82
1961,3.2,6.3,7.1,8.9,9.9,12.6,13.7,14.1,13.9,9.9,5.8,2.2,4.26,8.61,13.45,9.88,8.96
1962,4.1,4.0,2.1,6.6,8.9,12.2,13.7,13.0,11.6,9.6,5.2,2.4,3.40,5.87,12.98,8.81,7.80
1963,-2.6,-1.1,5.2,7.4,9.3,13.6,13.7,13.1,11.9,10.2,7.4,2.3,-0.44,7.30,13.50,9.83,7.58
1964,3.4,3.8,4.0,7.6,11.8,12.4,14.3,14.0,13.1,8.1,7.1,3.3,3.16,7.77,13.58,9.42,8.58
1965,3.1,2.4,4.6,7.1,10.2,12.7,12.9,13.8,10.9,10.3,4.2,4.6,2.95,7.32,13.13,8.50,8.11
1966,2.6,5.1,5.9,6.4,9.9,13.7,13.7,13.5,12.9,9.3,5.0,5.5,4.08,7.39,13.62,9.06,8.63
1967,4.1,4.7,6.0,7.1,9.1,12.9,14.8,14.2,12.5,9.7,5.0,4.4,4.77,7.38,13.96,9.08,8.72
1968,4.3,1.5,5.3,6.7,8.7,13.3,13.9,14.6,12.8,11.7,6.1,3.0,3.41,6.89,13.95,10.23,8.51
1969,4.9,0.6,3.1,6.7,9.8,12.6,14.9,14.7,12.7,12.1,5.0,3.0,2.90,6.53,14.07,9.98,8.40
1970,3.7,2.6,3.3,5.6,11.4,14.8,13.6,14.6,13.3,9.8,7.4,3.9,3.14,6.77,14.33,10.17,8.70
1971,4.3,4.0,4.5,7.0,10.4,11.4,15.6,14.3,13.7,10.8,6.0,6.1,4.08,7.30,13.80,10.21,9.05
1972,3.6,3.8,5.8,7.2,8.9,10.0,14.3,13.6,10.7,9.7,6.0,5.7,4.49,7.30,12.65,8.80,8.28
1973,4.3,4.0,5.3,6.1,10.2,13.3,14.2,15.4,13.1,8.7,6.3,4.8,4.65,7.23,14.29,9.34,8.83
1974,5.4,4.8,4.8,7.6,9.5,12.4,13.5,13.5,10.7,7.2,6.0,7.2,5.01,7.29,13.14,7.98,8.58
1975,6.1,4.3,4.1,7.2,9.1,13.5,15.8,16.4,11.9,9.3,6.0,5.1,5.90,6.83,15.27,9.07,9.10
1976,5.2,3.7,4.0,7.1,10.4,14.8,16.4,16.3,12.0,9.2,5.9,1.9,4.66,7.16,15.84,9.03,8.92
1977,2.4,4.7,6.3,6.2,9.6,11.4,14.9,14.2,11.9,11.0,5.6,5.6,2.93,7.37,13.50,9.53,8.67
1978,3.3,2.2,5.7,5.6,10.6,12.2,13.4,13.6,12.7,11.2,7.9,3.9,3.72,7.35,13.06,10.60,8.56
1979,0.2,0.8,3.7,6.6,8.1,12.4,14.5,13.3,12.1,10.4,6.6,5.3,1.66,6.13,13.43,9.68,7.87
1980,1.9,5.4,4.1,7.7,10.4,12.4,13.4,14.3,13.4,8.2,5.9,5.2,4.19,7.37,13.37,9.16,8.53
1981,4.5,2.6,7.0,7.2,10.0,12.0,14.1,15.1,13.2,7.5,7.2,0.8,4.14,8.08,13.73,9.28,8.46
1982,2.7,4.5,5.3,7.5,10.2,14.1,15.1,14.2,13.0,9.4,7.3,4.1,2.63,7.67,14.46,9.90,8.97
1983,5.9,1.4,5.8,5.7,9.1,12.9,17.8,16.0,12.6,9.6,6.9,5.7,3.88,6.84,15.61,9.71,9.18
1984,3.5,3.3,4.1,7.7,9.1,13.2,15.4,16.3,12.6,10.2,6.9,5.0,4.18,6.93,14.97,9.92,8.95
1985,0.7,2.3,4.1,7.4,9.8,11.4,14.7,13.2,13.6,9.8,3.9,5.8,2.67,7.09,13.13,9.13,8.10
1986,3.3,-1.5,4.4,4.7,9.8,13.7,14.2,12.2,10.2,10.0,7.1,5.8,2.67,6.30,13.37,9.14,7.89
1987,0.8,3.1,3.8,9.1,9.2,11.4,14.6,14.4,12.5,8.8,6.2,5.0,3.25,7.36,13.50,9.17,8.28
1988,5.0,4.3,5.8,7.5,10.7,13.6,13.3,13.6,12.1,9.6,5.2,7.3,4.80,7.98,13.51,8.98,9.02
1989,5.9,5.4,6.4,5.6,12.0,13.1,16.7,15.1,13.1,10.9,6.4,4.1,6.21,8.06,14.99,10.14,9.60
1990,6.1,6.7,7.4,7.1,11.8,12.3,15.9,16.4,11.9,11.0,6.2,3.9,5.61,8.79,14.91,9.72,9.77
1991,2.7,1.3,6.8,7.2,10.1,10.9,15.7,15.4,13.6,9.2,6.3,4.7,2.71,8.05,14.04,9.69,8.71
1992,3.4,5.2,6.5,7.7,12.4,14.2,15.0,13.7,12.1,7.1,7.0,3.5,4.40,8.88,14.30,8.73,8.99
1993,5.5,4.6,5.8,8.7,10.3,13.7,13.8,13.1,11.4,7.2,4.5,5.1,4.54,8.25,13.53,7.68,8.66
1994,4.8,2.9,6.6,7.0,9.8,12.6,15.6,14.3,11.7,9.6,9.6,6.4,4.29,7.80,14.21,10.30,9.28
1995,4.7,5.9,4.7,8.0,10.4,13.2,16.9,18.0,12.5,12.3,7.1,2.1,5.62,7.72,16.05,10.66,9.68
1996,4.1,2.2,4.2,7.5,8.1,12.8,14.9,15.0,12.7,10.8,5.6,2.6,2.83,6.59,14.24,9.74,8.40
1997,2.2,5.8,7.3,8.4,10.7,12.8,15.2,17.2,13.1,9.7,8.2,5.6,3.46,8.80,15.09,10.35,9.70
1998,4.7,6.8,7.4,6.8,12.1,13.0,14.1,14.6,13.6,9.8,6.2,5.4,5.65,8.77,13.89,9.86,9.55
1999,5.2,4.9,6.4,8.5,11.8,12.5,16.3,15.1,14.0,10.0,7.2,4.8,5.17,8.92,14.65,10.41,9.76
2000,4.4,5.6,6.5,6.8,11.1,13.6,14.5,15.1,13.7,9.4,6.4,5.3,4.93,8.14,14.41,9.82,9.38
2001,3.1,3.9,4.4,6.7,11.5,13.0,15.2,15.2,12.7,12.3,7.3,3.5,4.09,7.56,14.47,10.76,9.09
2002,5.5,6.2,6.8,8.1,10.7,12.7,14.3,15.2,13.1,9.4,8.4,5.2,5.03,8.53,14.06,10.28,9.64
2003,4.1,3.6,6.9,9.2,10.6,14.4,15.9,16.6,13.1,8.2,7.6,4.8,4.33,8.90,15.62,9.64,9.62
2004,4.9,4.5,5.7,8.5,11.0,14.1,14.3,16.1,13.8,9.7,7.5,5.8,4.76,8.41,14.84,10.31,9.67
2005,5.9,3.8,6.6,8.2,10.3,14.2,15.5,14.9,14.0,12.0,5.9,4.8,5.18,8.37,14.89,10.64,9.71
2006,3.9,3.4,4.4,7.9,11.1,14.7,17.8,15.0,15.2,11.9,7.6,6.1,4.05,7.78,15.85,11.55,9.95
2007,6.6,5.4,6.4,10.5,11.0,14.2,13.9,14.4,13.0,10.4,7.4,5.0,6.05,9.27,14.17,10.28,9.87
2008,6.2,5.1,5.6,7.2,12.7,12.8,15.1,14.9,12.4,9.2,6.8,3.4,5.44,8.51,14.28,9.47,9.30
2009,2.9,4.0,6.2,8.7,10.8,14.0,14.9,15.0,12.9,10.9,8.0,2.9,3.39,8.56,14.66,10.60,9.29
2010,1.2,2.5,5.0,8.0,10.0,14.2,15.4,14.1,13.0,9.7,4.7,-0.5,2.19,7.68,14.56,9.13,8.13
2011,3.1,6.0,6.0,10.9,11.1,12.6,14.1,14.1,13.9,11.7,9.0,6.1,2.77,9.33,13.62,11.56,9.91
2012,5.5,4.1,7.8,6.5,10.9,12.7,14.2,15.4,12.0,9.0,6.0,4.8,5.25,8.43,14.13,8.98,9.10
2013,3.7,3.0,2.4,6.4,9.2,12.8,17.2,15.5,13.1,11.9,6.1,6.2,3.85,5.98,15.17,10.38,9.00
2014,5.3,5.5,6.8,9.2,11.3,14.1,16.1,14.0,14.1,11.5,7.8,5.2,5.69,9.11,14.76,11.13,10.10
2015,4.4,3.5,5.5,8.4,9.8,13.0,14.4,14.4,11.8,10.1,9.0,9.2,4.39,7.89,13.91,10.30,9.49
2016,5.4,4.4,5.2,6.9,11.8,14.5,15.2,15.6,14.6,10.0,5.5,6.2,6.38,7.98,15.10,10.02,9.63
2017,4.5,5.6,7.5,8.1,12.4,14.6,15.3,14.5,12.6,11.5,6.7,4.9,5.44,9.36,14.83,10.28,9.89
2018,4.8,2.7,4.0,8.6,11.8,15.3,17.2,15.2,12.5,9.5,7.5,6.9,4.21,8.16,15.90,9.83,9.72
2019,4.1,6.4,7.0,8.8,10.2,13.3,16.0,15.9,13.4,9.5,5.9,5.6,5.79,8.65,15.07,9.58,9.68
2020,5.8,5.8,5.9,9.9,11.6,14.0,14.2,16.1,13.0,,,,,,5.76,9.11,14.79,,,,