YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | 65.26 | 71.47 | 72.23 | 75.32 | 71.47 | 57.94 | 45.93 | c | 44.32 | 62.99 | d | |||||||
1936 | 46.32 | 40.21 | 51.00 | 62.17 | a | 68.26 | 70.63 | 74.42 | 76.71 | 69.90 | 62.61 | 49.50 | 45.52 | 59.77 | ||||||||||||
1937 | 34.39 | 44.75 | 55.19 | 54.63 | 66.48 | 72.63 | 74.29 | 73.16 | 69.47 | 58.84 | 49.90 | 44.42 | 58.18 | |||||||||||||
1938 | 43.45 | 45.75 | 49.50 | a | 60.30 | 66.87 | 70.77 | 73.65 | 68.90 | 68.93 | 60.29 | 47.37 | 44.77 | 58.38 | ||||||||||||
1939 | 45.29 | 44.46 | 54.00 | 63.47 | 67.00 | 66.37 | 75.27 | a | 77.48 | 70.80 | 60.65 | 52.40 | 48.81 | 60.50 | ||||||||||||
1940 | 45.74 | 49.59 | 56.77 | 61.30 | 71.32 | 75.37 | 72.87 | 76.55 | 70.90 | 62.03 | 47.73 | 46.65 | 61.40 | |||||||||||||
1941 | 46.13 | 53.54 | 62.06 | 63.03 | 65.80 | a | 70.41 | a | 78.16 | 73.32 | 65.90 | 60.29 | 51.70 | 45.52 | 61.32 | |||||||||||
1942 | 41.52 | 48.32 | 54.52 | 60.73 | 63.90 | 68.33 | 75.65 | 75.74 | 70.63 | 62.13 | 48.43 | 45.94 | 59.65 | |||||||||||||
1943 | 39.13 | 52.04 | 52.48 | 61.33 | 61.23 | 66.57 | 71.81 | 71.19 | 74.97 | 59.48 | 52.10 | 44.42 | 58.90 | |||||||||||||
1944 | 45.32 | 48.93 | 52.81 | 58.20 | 64.48 | 67.57 | 72.29 | 72.52 | 72.93 | 63.64 | c | 50.07 | 43.65 | 59.37 | ||||||||||||
1945 | 47.26 | 49.11 | 50.55 | 54.83 | 64.81 | 69.93 | 75.77 | a | 73.26 | 68.30 | 61.48 | 49.47 | 44.29 | 59.09 | ||||||||||||
1946 | 44.58 | 47.04 | 52.90 | 56.93 | 66.63 | a | 66.80 | 73.42 | 73.52 | 69.30 | 56.97 | a | 48.60 | 45.39 | 58.51 | |||||||||||
1947 | 40.39 | 52.64 | 57.84 | 62.10 | 69.03 | 67.27 | 71.71 | 71.71 | 71.67 | 60.61 | 50.67 | 45.81 | 60.12 | |||||||||||||
1948 | 42.58 | 44.00 | 49.65 | 52.20 | 60.03 | 70.57 | 71.10 | 66.74 | 68.53 | 57.71 | 46.93 | 39.13 | 55.76 | |||||||||||||
1949 | 34.03 | 43.21 | 52.10 | 58.57 | 65.26 | 67.73 | 72.03 | a | 73.13 | 73.17 | 57.13 | 55.53 | 43.33 | a | 57.94 | |||||||||||
1950 | 32.97 | 44.64 | 49.06 | 56.40 | 62.10 | 69.50 | 73.61 | 75.77 | 70.87 | 57.00 | 50.27 | 49.74 | 57.66 | |||||||||||||
1951 | 43.23 | 48.00 | 48.19 | 64.03 | 65.48 | 72.40 | 73.03 | 73.68 | 70.37 | 59.97 | 49.77 | 42.13 | 59.19 | |||||||||||||
1952 | 40.39 | 46.86 | 49.68 | 61.60 | 65.81 | 66.10 | 75.42 | 72.19 | 74.70 | 67.90 | 48.93 | 45.39 | 59.58 | |||||||||||||
1953 | 49.77 | 49.04 | 52.00 | 56.27 | 62.97 | 64.27 | 74.32 | 73.74 | 71.57 | 62.29 | 52.77 | 47.06 | 59.67 | |||||||||||||
1954 | 40.58 | 48.29 | 52.71 | 56.03 | 64.65 | 64.33 | 69.23 | 68.71 | 68.17 | 60.61 | 53.30 | 44.68 | 57.61 | |||||||||||||
1955 | 42.81 | 46.64 | 47.26 | 53.21 | a | 60.30 | a | 66.13 | 67.74 | 73.39 | 69.87 | 58.32 | 45.57 | 44.37 | a | 56.30 | ||||||||||
1956 | 44.10 | 40.52 | 49.71 | 61.77 | 68.39 | 64.63 | 75.97 | 73.33 | a | 70.40 | 57.19 | 49.07 | 44.10 | 58.26 | ||||||||||||
1957 | 37.19 | 46.81 | a | 52.97 | 59.73 | 66.87 | 69.90 | 73.65 | 73.16 | 76.80 | 61.19 | 50.37 | 47.26 | 59.66 | ||||||||||||
1958 | 48.13 | 54.61 | 53.26 | 59.87 | 69.52 | 71.80 | 78.35 | 78.71 | 71.53 | 64.81 | 50.60 | 48.68 | 62.49 | |||||||||||||
1959 | 45.32 | 46.57 | 52.42 | 59.93 | 64.58 | 67.67 | 75.65 | 72.90 | 66.13 | 60.81 | 50.72 | a | 45.23 | 58.99 | ||||||||||||
1960 | 41.35 | 48.72 | 51.74 | 58.47 | 60.26 | 69.93 | 76.26 | 70.52 | 70.37 | 60.42 | 50.17 | 43.58 | 58.48 | |||||||||||||
1961 | 49.52 | 49.71 | 52.42 | 54.87 | 63.68 | 73.57 | 74.87 | 75.71 | 68.47 | 59.39 | 47.90 | 44.13 | 59.52 | |||||||||||||
1962 | 42.48 | 49.50 | 51.10 | 58.93 | 57.52 | 66.93 | 70.55 | 71.81 | 70.10 | 61.16 | 52.57 | 46.42 | 58.26 | |||||||||||||
1963 | 39.39 | 54.57 | 52.42 | 55.90 | 65.19 | 65.60 | 69.13 | 71.61 | 72.70 | 61.29 | 50.10 | 44.65 | 58.55 | |||||||||||||
1964 | 45.61 | 49.10 | 51.39 | 54.67 | 59.68 | 65.60 | 70.29 | 70.90 | 68.10 | 61.42 | 46.97 | 41.32 | 57.09 | |||||||||||||
1965 | 44.13 | 48.07 | 58.03 | 59.23 | 59.61 | 66.87 | 73.61 | 73.32 | 69.13 | 63.19 | 52.30 | 42.52 | 59.17 | |||||||||||||
1966 | 43.39 | 47.68 | 53.03 | 59.20 | 64.45 | 68.57 | 70.97 | 74.77 | 71.90 | 60.71 | 52.17 | 46.52 | 59.45 | |||||||||||||
1967 | 46.81 | 50.21 | 49.74 | 54.53 | 64.10 | 71.33 | 74.97 | 80.77 | 77.07 | 61.68 | 52.50 | 43.52 | 60.60 | |||||||||||||
1968 | 44.26 | 55.69 | 55.68 | 56.37 | 63.74 | 67.70 | 74.94 | 71.39 | 70.10 | 59.06 | 51.07 | 41.52 | 59.29 | |||||||||||||
1969 | 36.29 | 45.82 | 56.90 | 57.67 | 68.03 | 70.33 | 72.00 | 73.03 | 68.53 | 60.32 | 50.57 | 45.03 | 58.71 | |||||||||||||
1970 | 44.35 | 54.14 | 55.13 | 54.23 | 64.68 | 71.30 | 73.23 | 73.48 | 68.07 | 58.69 | b | 50.20 | 42.29 | 59.15 | ||||||||||||
1971 | 42.48 | 46.93 | 49.13 | 57.67 | 63.39 | 62.73 | 71.39 | 75.90 | 68.60 | 57.61 | 48.80 | 41.39 | 57.17 | |||||||||||||
1972 | 41.42 | 47.72 | 53.19 | 53.77 | 67.61 | 67.50 | 75.94 | 77.74 | 68.38 | d | 59.47 | a | 50.43 | 40.26 | 58.62 | |||||||||||
1973 | 42.71 | 51.32 | 52.68 | 59.10 | 64.90 | b | 66.33 | 73.23 | 69.18 | i | 70.97 | 58.97 | b | 45.64 | b | 47.32 | 57.56 | a | ||||||||
1974 | 42.06 | 46.54 | 51.94 | 56.63 | c | 59.32 | 68.27 | 72.06 | 72.81 | 76.60 | 62.71 | 51.47 | 47.81 | 59.02 | ||||||||||||
1975 | 44.58 | 46.96 | 51.10 | 54.43 | 63.77 | 64.33 | 71.48 | 68.39 | 73.37 | 56.45 | 48.90 | 44.93 | c | 57.39 | ||||||||||||
1976 | 45.29 | 46.63 | b | 50.57 | a | 57.20 | 63.23 | 66.17 | a | 71.61 | 68.87 | 70.59 | a | 61.40 | a | 53.03 | a | 44.14 | c | 58.23 | ||||||
1977 | 41.71 | 51.93 | 50.48 | 60.87 | 59.67 | d | 68.93 | 70.10 | 75.42 | 66.57 | b | 60.87 | 48.61 | b | 45.90 | 58.42 | ||||||||||
1978 | 46.13 | 51.08 | c | 57.10 | 57.38 | a | 62.55 | 70.80 | 74.07 | b | 72.17 | b | 66.50 | 62.94 | 44.83 | 40.55 | 58.84 | |||||||||
1979 | 37.35 | 45.86 | 57.77 | 57.80 | 66.35 | 69.25 | b | 74.74 | 72.26 | 73.00 | 62.68 | 50.00 | 47.97 | 59.59 | ||||||||||||
1980 | 40.61 | 50.69 | 51.24 | b | 62.00 | 62.29 | 64.23 | 72.61 | 69.74 | 69.83 | 63.42 | 51.87 | 47.68 | 58.85 | ||||||||||||
1981 | 48.97 | 50.85 | a | 57.69 | b | 58.57 | 62.03 | 65.23 | 70.58 | 77.48 | 71.07 | 60.00 | 52.80 | 46.23 | 60.12 | |||||||||||
1982 | 43.80 | a | 48.93 | a | 53.14 | b | 56.00 | 64.16 | 69.20 | 69.61 | 73.16 | 70.83 | 62.06 | 49.32 | b | 44.89 | c | 58.76 | ||||||||
1983 | 48.03 | 51.68 | 56.10 | a | 60.90 | 65.39 | 66.23 | 70.16 | 73.90 | 67.77 | 60.65 | 50.97 | 39.42 | 59.27 | ||||||||||||
1984 | 46.61 | 51.10 | 56.50 | a | 55.40 | 60.71 | 65.13 | 73.90 | 74.61 | 70.17 | a | 56.87 | 49.37 | 40.94 | 58.44 | |||||||||||
1985 | 41.58 | 45.43 | 52.23 | 58.93 | 65.61 | 72.10 | 82.03 | 77.90 | 69.47 | 61.16 | 44.00 | 42.61 | 59.42 | |||||||||||||
1986 | 50.87 | 50.50 | 59.61 | 58.73 | 64.87 | 74.30 | 70.97 | 79.65 | 69.23 | 65.77 | 52.38 | a | ----- | z | 63.35 | a | ||||||||||
1987 | 46.52 | 53.39 | 55.77 | 62.70 | 67.52 | 72.37 | 72.87 | 78.10 | 73.70 | 70.23 | 55.27 | 44.97 | 62.78 | |||||||||||||
1988 | 45.58 | 52.34 | 55.77 | 60.00 | 63.48 | 68.80 | 76.42 | 75.87 | 72.70 | 64.23 | 52.00 | 46.87 | 61.17 | |||||||||||||
1989 | 46.32 | 42.43 | 51.61 | 63.93 | 65.32 | 72.90 | 72.48 | 73.06 | 77.50 | 63.16 | 53.13 | 47.68 | 60.80 | |||||||||||||
1990 | 48.26 | 46.25 | 58.03 | 61.07 | 63.45 | 68.43 | 78.42 | 77.55 | 73.30 | 60.39 | 52.83 | 39.48 | 60.62 | |||||||||||||
1991 | 45.26 | 56.61 | 52.39 | 57.13 | 60.74 | 65.67 | 75.94 | 74.84 | 76.20 | 64.81 | 52.72 | a | 46.87 | 60.76 | ||||||||||||
1992 | 49.29 | 57.10 | 61.61 | 62.37 | 71.20 | a | 74.63 | 76.35 | 78.13 | 70.43 | 64.26 | 51.43 | 44.45 | 63.44 | ||||||||||||
1993 | 42.39 | 49.54 | 57.06 | 58.10 | 68.97 | 68.47 | 68.84 | 75.90 | 74.07 | 64.58 | 48.63 | 45.58 | 60.18 | |||||||||||||
1994 | 50.45 | 46.93 | 58.84 | 60.43 | 67.29 | 68.47 | 75.52 | 76.03 | 74.57 | 62.52 | 47.57 | 46.52 | 61.26 | |||||||||||||
1995 | 50.10 | 54.00 | 56.52 | 58.57 | 67.29 | 70.00 | 75.71 | 73.81 | 74.50 | 61.13 | 56.28 | a | 47.32 | 62.10 | ||||||||||||
1996 | 45.93 | a | 49.90 | 55.74 | 59.67 | 60.13 | 68.50 | 77.71 | 75.77 | 65.50 | 57.26 | 47.37 | 45.55 | 59.09 | ||||||||||||
1997 | 46.32 | 51.04 | 53.13 | 58.40 | 69.19 | 68.57 | 74.55 | 77.48 | 73.33 | 59.55 | 55.97 | 46.61 | 61.18 | |||||||||||||
1998 | 47.16 | 52.18 | 55.45 | 59.40 | 60.84 | 67.30 | 75.42 | 76.87 | 74.67 | 61.68 | 51.63 | 43.77 | 60.53 | |||||||||||||
1999 | 47.00 | 47.82 | 51.84 | 58.07 | 60.87 | 64.53 | 71.13 | 73.00 | 73.60 | 62.29 | 54.20 | 47.90 | 59.35 | |||||||||||||
2000 | 44.84 | 49.97 | 52.32 | 61.20 | 62.90 | 70.57 | 73.45 | 73.29 | 70.47 | 61.32 | 48.60 | 45.90 | 59.57 | |||||||||||||
2001 | 46.90 | 50.04 | 54.58 | 55.97 | 64.94 | 67.03 | 70.71 | 73.65 | 70.60 | 59.68 | 52.67 | 46.03 | 59.40 | |||||||||||||
2002 | 44.84 | 50.21 | 50.00 | 58.33 | 61.00 | 69.47 | 74.71 | 75.16 | 72.57 | 62.00 | 54.79 | a | 48.39 | 60.12 | ||||||||||||
2003 | 50.90 | 51.90 | h | 53.55 | 56.23 | 63.58 | 72.57 | 77.74 | 76.52 | 73.47 | 63.55 | 49.13 | 46.55 | 62.16 | a | |||||||||||
2004 | 42.87 | 51.21 | 57.39 | 63.53 | 65.35 | 70.87 | 77.13 | 75.87 | 68.67 | 61.94 | 50.47 | 47.00 | 61.02 | |||||||||||||
2005 | 47.74 | 53.71 | 58.29 | 58.07 | 66.23 | 66.63 | 75.52 | 76.84 | 70.17 | 60.52 | 49.83 | 44.45 | 60.67 | |||||||||||||
2006 | 48.39 | 48.43 | 52.19 | 59.67 | 66.26 | 70.90 | 76.10 | 74.45 | 73.10 | 61.26 | 50.37 | 45.45 | 60.55 | |||||||||||||
2007 | 44.00 | 49.68 | 55.13 | 57.93 | 64.52 | 67.33 | 75.48 | 74.48 | 69.20 | 58.94 | 51.63 | 44.06 | 59.37 | |||||||||||||
2008 | 42.65 | 50.79 | 51.00 | 54.20 | 63.42 | 65.67 | 73.97 | 74.23 | 72.17 | 60.26 | 54.00 | 40.61 | 58.58 | |||||||||||||
2009 | 45.52 | 49.57 | 50.45 | 58.40 | 65.52 | 70.27 | 78.03 | 74.10 | 73.27 | 59.68 | 52.33 | 42.32 | 59.95 | |||||||||||||
2010 | 50.29 | 53.64 | 55.52 | 57.00 | 59.74 | 65.20 | 70.94 | 73.06 | 68.70 | 61.71 | 49.23 | 47.48 | 59.38 | |||||||||||||
2011 | 45.61 | 45.71 | 50.87 | 53.37 | 59.68 | 65.73 | 71.16 | 74.55 | 73.67 | 60.10 | 49.37 | 44.87 | 57.89 | |||||||||||||
2012 | 44.71 | 48.93 | 49.74 | 58.33 | 62.77 | 64.27 | 70.13 | 76.26 | 73.57 | 61.42 | 53.10 | 45.84 | 59.09 | |||||||||||||
2013 | 41.81 | 48.75 | 54.16 | 58.20 | 64.87 | 69.30 | 74.03 | 74.35 | 70.13 | 59.94 | 51.43 | 41.32 | 59.03 | |||||||||||||
2014 | 48.03 | 45.82 | 56.87 | 58.93 | 67.45 | 68.33 | 78.32 | 79.87 | 74.93 | 65.58 | 52.87 | 48.65 | 62.14 | |||||||||||||
2015 | 48.90 | 55.18 | 60.48 | 59.87 | 65.48 | 73.93 | 80.10 | 79.13 | 70.77 | 65.71 | 51.33 | 46.39 | 63.11 | |||||||||||||
2016 | 47.65 | 53.66 | 56.10 | 65.37 | 67.87 | 70.90 | 72.74 | 78.29 | 70.30 | 60.52 | 55.50 | 41.81 | 61.72 | |||||||||||||
2017 | 40.42 | 48.64 | 51.35 | 56.63 | 66.06 | 69.80 | 75.45 | 79.03 | 74.33 | 61.94 | 51.60 | 44.81 | 60.01 | |||||||||||||
2018 | 50.03 | 46.93 | 52.55 | 59.87 | 67.23 | 70.00 | a | 77.61 | 76.35 | 70.57 | 62.19 | 53.10 | 48.23 | 61.22 | ||||||||||||
2019 | 49.06 | 42.32 | 55.58 | 59.80 | 67.52 | 70.23 | 74.06 | 76.06 | 68.80 | 58.74 | 53.00 | 46.68 | 60.16 | |||||||||||||
2020 | 48.81 | 50.07 | 53.10 | 61.27 | 66.47 | a | 68.33 | 73.87 | 77.52 | 74.33 | 62.07 | a | 51.47 | 49.65 | 61.41 | |||||||||||
2021 | 49.23 | 45.39 | 52.52 | 63.10 | 63.68 | 75.10 | 74.67 | a | 74.81 | 71.80 | 58.61 | 53.47 | 44.23 | a | 60.55 | |||||||||||
2022 | 47.23 | a | 49.07 | 55.26 | 54.70 | 59.97 | 69.52 | a | 76.77 | 79.45 | 74.87 | 67.00 | 50.40 | 44.29 | 60.71 | |||||||||||
2023 | 48.00 | 46.04 | 50.65 | 56.50 | 68.97 | 69.97 | 77.26 | 80.74 | 70.57 | 63.16 | 52.83 | 49.52 | 61.18 | |||||||||||||
2024 | 45.87 | 51.07 | 53.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.22 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.69 | 49.06 | 53.64 | 58.57 | 64.51 | 68.74 | 73.91 | 74.62 | 71.23 | 61.19 | 50.77 | 45.02 | 59.63 | |||||||||||||
S.D. | 3.85 | 3.46 | 3.11 | 2.84 | 2.96 | 2.82 | 2.74 | 2.88 | 2.66 | 2.53 | 2.51 | 2.45 | 1.46 | |||||||||||||
SKEW | -0.79 | -0.05 | 0.49 | 0.04 | -0.11 | 0.22 | 0.20 | -0.16 | 0.21 | 0.69 | -0.24 | -0.40 | 0.19 | |||||||||||||
MAX | 50.90 | 57.10 | 62.06 | 65.37 | 71.32 | 75.37 | 82.03 | 80.77 | 77.50 | 70.23 | 56.28 | 49.74 | 63.44 | |||||||||||||
MIN | 32.97 | 40.21 | 47.26 | 52.20 | 57.52 | 62.73 | 67.74 | 66.74 | 65.50 | 56.45 | 44.00 | 39.13 | 55.76 | |||||||||||||
YRS | 89 | 88 | 89 | 88 | 89 | 89 | 89 | 88 | 89 | 89 | 89 | 88 | 85 |