YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | 54.41 | d | 65.77 | 69.87 | 71.55 | 65.57 | 50.48 | 37.97 | 35.55 | 56.39 | d | |||||||
1936 | 35.45 | 38.00 | 45.10 | 51.77 | 57.74 | 66.27 | 73.26 | 71.35 | 61.00 | 51.94 | 40.23 | 34.16 | 52.19 | |||||||||||||
1937 | 22.87 | 33.32 | 39.06 | 44.37 | 55.06 | 63.00 | 71.42 | 71.00 | 66.90 | 53.03 | 41.80 | 39.48 | 50.11 | |||||||||||||
1938 | 37.10 | 36.50 | 41.26 | 48.90 | 55.74 | 64.90 | 70.71 | 71.26 | 65.07 | 49.87 | 35.07 | 39.06 | 51.29 | |||||||||||||
1939 | 36.61 | 33.00 | 42.03 | 51.63 | 57.13 | 62.67 | 71.55 | 73.19 | 64.93 | 53.42 | 45.30 | 40.13 | 52.63 | |||||||||||||
1940 | 39.68 | 40.66 | 46.87 | 51.33 | 58.35 | 67.17 | 68.00 | 71.26 | 61.53 | 51.74 | 38.20 | 38.65 | 52.79 | |||||||||||||
1941 | 37.61 | 41.89 | 42.42 | 45.60 | 56.29 | 62.28 | a | 72.03 | 66.90 | 55.73 | 48.87 | 40.67 | 35.84 | 50.51 | ||||||||||||
1942 | 34.48 | 33.07 | 36.20 | a | 48.63 | 53.23 | 60.77 | 74.10 | 69.39 | 59.43 | 53.23 | 43.10 | 36.58 | 50.18 | ||||||||||||
1943 | 37.19 | 39.11 | 44.90 | 49.53 | 58.74 | 60.07 | 69.68 | 71.58 | 65.77 | 53.35 | 39.73 | 39.33 | a | 52.42 | ||||||||||||
1944 | 34.39 | 36.45 | 41.90 | 46.03 | 55.55 | 58.17 | 67.29 | 69.90 | 63.97 | 53.32 | 43.11 | c | 37.61 | 50.64 | ||||||||||||
1945 | 37.10 | a | 40.19 | b | 40.40 | a | 49.37 | 55.32 | 62.53 | 73.16 | 68.94 | 62.60 | 54.61 | 40.17 | 34.19 | 51.55 | ||||||||||
1946 | 34.55 | 33.82 | 41.58 | 52.70 | 58.06 | 66.00 | 72.06 | 71.48 | 64.43 | 49.52 | 38.57 | 40.35 | 51.93 | |||||||||||||
1947 | 34.00 | 40.79 | 45.74 | 51.50 | 61.48 | 64.97 | 70.97 | 69.35 | 67.23 | 53.97 | 39.57 | 34.61 | 52.85 | |||||||||||||
1948 | 35.61 | 36.38 | 37.48 | 49.38 | a | 56.52 | 64.73 | 69.65 | 70.16 | 64.33 | 53.68 | 38.57 | 29.42 | 50.49 | ||||||||||||
1949 | 25.77 | 32.25 | 40.32 | 53.33 | 56.16 | 65.10 | 72.38 | b | 69.10 | 65.93 | 49.97 | 44.53 | 32.84 | 50.64 | ||||||||||||
1950 | 29.97 | 40.00 | 44.94 | 53.37 | 57.39 | 63.80 | 74.10 | 70.23 | 64.10 | 54.97 | 45.90 | 40.97 | 53.31 | |||||||||||||
1951 | 35.67 | g | 36.86 | 41.03 | 50.70 | 55.74 | 63.33 | 73.68 | 69.10 | 63.33 | 53.25 | g | 40.77 | 35.70 | a | 53.02 | b | |||||||||
1952 | 32.03 | 37.55 | 39.00 | 50.10 | 59.10 | 60.77 | 70.77 | 74.13 | 66.00 | 56.16 | 39.80 | 36.80 | a | 51.85 | ||||||||||||
1953 | 40.55 | 37.82 | 41.61 | 48.90 | 50.71 | 61.03 | 75.90 | 70.06 | 63.17 | 53.19 | 44.70 | 37.84 | 52.12 | |||||||||||||
1954 | 36.10 | 43.11 | 40.16 | 55.13 | 61.16 | 65.73 | 75.65 | 68.23 | i | 63.93 | 53.45 | 46.73 | 36.65 | 52.53 | a | |||||||||||
1955 | 34.20 | a | 33.96 | 42.35 | 46.27 | 55.39 | 65.17 | 71.19 | 73.37 | a | 64.10 | 54.16 | 43.10 | 38.23 | 51.79 | |||||||||||
1956 | 39.52 | 34.97 | 42.61 | 50.03 | 57.58 | 67.30 | 72.61 | 67.23 | 67.23 | 51.84 | 37.17 | 33.78 | h | 53.46 | a | |||||||||||
1957 | 34.13 | 44.93 | 43.39 | 49.77 | 55.50 | a | 69.47 | 73.58 | 70.23 | 63.80 | 51.10 | 41.60 | 38.29 | 52.98 | ||||||||||||
1958 | 38.45 | 43.22 | a | 39.94 | 49.83 | 62.19 | 65.27 | 69.42 | 73.93 | a | 65.77 | 55.45 | 41.23 | 37.23 | 53.49 | |||||||||||
1959 | 37.29 | 37.18 | 45.00 | 54.00 | 55.77 | 68.10 | 77.10 | 69.94 | 62.47 | 53.87 | 42.90 | 38.19 | 53.48 | |||||||||||||
1960 | 31.52 | 36.79 | 45.13 | 51.07 | 55.90 | 69.53 | 72.81 | 70.10 | 65.93 | a | 52.42 | 41.57 | 34.13 | 52.24 | ||||||||||||
1961 | 34.58 | 40.25 | 43.13 | 51.23 | 55.55 | 69.07 | 75.19 | 72.84 | 60.33 | 50.71 | 40.13 | 34.16 | 52.26 | |||||||||||||
1962 | 37.35 | 39.07 | 37.71 | 53.73 | 53.94 | 64.87 | 70.97 | 71.13 | 65.50 | 53.71 | 45.03 | 36.90 | 52.49 | |||||||||||||
1963 | 32.45 | 44.96 | 41.84 | 45.23 | 58.23 | 62.43 | 70.00 | 71.23 | 65.90 | 56.35 | 43.50 | 34.13 | 52.19 | |||||||||||||
1964 | 30.00 | 33.66 | 39.39 | 46.90 | 54.10 | 62.87 | 71.74 | 72.00 | 61.20 | 57.97 | 38.57 | 37.94 | 50.53 | |||||||||||||
1965 | 37.35 | 38.25 | 40.90 | 48.47 | 54.26 | 59.40 | 70.32 | 70.19 | 58.43 | 53.45 | 46.43 | 35.97 | 51.12 | |||||||||||||
1966 | 32.77 | 34.86 | 43.35 | 49.70 | 58.84 | 64.83 | 69.77 | ----- | z | 62.30 | 50.10 | 42.67 | 36.48 | 49.61 | a | |||||||||||
1967 | 33.77 | 39.29 | 43.90 | 40.00 | 55.42 | 60.10 | 73.10 | 71.84 | 63.27 | 52.94 | 45.87 | 33.55 | 51.09 | |||||||||||||
1968 | 33.55 | ----- | z | 42.68 | 45.63 | 55.90 | 61.86 | a | 70.03 | 67.35 | 63.10 | ----- | z | 43.97 | 30.13 | 51.42 | b | |||||||||
1969 | 41.03 | a | 36.43 | 40.77 | 48.60 | 59.13 | 62.43 | 72.10 | 74.16 | 66.87 | 49.71 | 43.23 | 36.84 | 52.61 | ||||||||||||
1970 | 35.94 | 41.82 | 41.74 | 41.33 | 54.23 | 61.97 | a | 71.45 | 71.68 | 56.33 | 47.26 | 39.53 | 32.39 | c | 49.64 | |||||||||||
1971 | 31.94 | 37.04 | 39.55 | 47.33 | 52.81 | 63.30 | 72.29 | 73.35 | 61.73 | 46.52 | 38.67 | 32.32 | 49.74 | |||||||||||||
1972 | 31.48 | 37.21 | 47.42 | 48.20 | 55.68 | 65.57 | 72.90 | 69.13 | 61.13 | 48.58 | 38.87 | 31.48 | 50.64 | |||||||||||||
1973 | 30.26 | 39.57 | 39.90 | 47.33 | 59.10 | 67.07 | 71.61 | 69.13 | 61.57 | 51.39 | 41.27 | 36.71 | 51.24 | |||||||||||||
1974 | 36.26 | 37.79 | 46.29 | 48.17 | 57.65 | 68.13 | 71.97 | 68.87 | 67.77 | 55.45 | 41.72 | a | 35.55 | 52.97 | ||||||||||||
1975 | 33.97 | 35.43 | 40.77 | 43.90 | a | 55.23 | 64.73 | 71.26 | 66.87 | 65.73 | 50.68 | 40.03 | 35.19 | 50.32 | ||||||||||||
1976 | 35.35 | 41.31 | 41.19 | 46.13 | 58.84 | 62.97 | 71.97 | 64.87 | 64.40 | 52.42 | 42.57 | 32.42 | 51.20 | |||||||||||||
1977 | 36.00 | 39.04 | 38.13 | 50.43 | 51.29 | 65.90 | 70.94 | 70.77 | 62.23 | 54.06 | 44.23 | 41.74 | 52.06 | |||||||||||||
1978 | 39.19 | 41.29 | 46.87 | 48.69 | a | 57.68 | 66.37 | 70.55 | 68.97 | 62.43 | 58.10 | 41.03 | 32.55 | 52.81 | ||||||||||||
1979 | 34.32 | 36.21 | 43.13 | 48.07 | 56.52 | 64.33 | 68.74 | 66.87 | 65.50 | 54.29 | 38.67 | 36.06 | 51.06 | |||||||||||||
1980 | 41.65 | 43.69 | 42.10 | 49.30 | 54.16 | 62.50 | 72.39 | 68.90 | 62.83 | 52.65 | 40.90 | 39.94 | 52.58 | |||||||||||||
1981 | 40.26 | 38.96 | 43.61 | 52.87 | 58.23 | 69.23 | 70.45 | 73.29 | 65.93 | 51.58 | 42.37 | 37.03 | 53.65 | |||||||||||||
1982 | 34.16 | 41.43 | 42.03 | 48.43 | 56.77 | 62.17 | 68.32 | 70.55 | 62.60 | 50.23 | 39.13 | 35.68 | 50.96 | |||||||||||||
1983 | 38.26 | 40.68 | 44.65 | 45.07 | 54.32 | 62.10 | 66.97 | 67.77 | 65.59 | a | 53.42 | 41.93 | 37.65 | 51.53 | ||||||||||||
1984 | 37.97 | 35.28 | 43.32 | 47.50 | 60.23 | 64.20 | 72.10 | 71.35 | 66.03 | 49.81 | 39.80 | 36.71 | 52.02 | |||||||||||||
1985 | 34.94 | 35.36 | 40.19 | 51.69 | a | 57.45 | b | 64.97 | 71.03 | a | 66.74 | 57.27 | 53.42 | 40.73 | 36.13 | a | 50.83 | |||||||||
1986 | 38.90 | 41.74 | a | 46.00 | 48.80 | 56.97 | 65.83 | 66.16 | 71.06 | 56.83 | 48.57 | c | 42.07 | 35.13 | a | 51.51 | ||||||||||
1987 | 33.55 | 37.43 | 40.94 | 51.23 | 56.16 | 65.97 | 66.29 | 68.65 | 62.57 | b | 55.94 | 41.00 | 32.87 | a | 51.05 | |||||||||||
1988 | 34.38 | b | 39.62 | 42.06 | 48.03 | 57.00 | b | 65.00 | b | 72.23 | 69.42 | 62.20 | 56.74 | 41.38 | f | 33.66 | b | 52.76 | a | |||||||
1989 | 33.87 | a | 36.29 | 46.14 | c | 55.03 | 56.87 | 63.80 | 72.35 | 67.19 | 61.63 | 50.54 | e | 41.53 | 34.70 | a | 51.66 | |||||||||
1990 | 34.10 | 36.37 | a | 44.19 | 52.53 | 54.74 | 65.45 | a | 73.20 | a | 68.61 | 64.83 | 50.67 | d | 41.20 | 28.85 | e | 51.23 | ||||||||
1991 | 35.43 | c | 42.68 | 40.23 | a | 49.17 | 55.67 | a | 63.82 | b | 70.65 | 69.26 | 63.70 | 53.97 | a | 42.60 | 35.90 | b | 51.92 | |||||||
1992 | 34.58 | 42.31 | 44.97 | 52.83 | 61.48 | 65.14 | a | 71.32 | 73.29 | 65.43 | 55.77 | 40.63 | ----- | z | 55.25 | a | ||||||||||
1993 | 38.16 | 40.00 | 46.35 | 51.13 | 60.81 | 64.77 | 68.23 | 70.65 | 62.47 | 54.55 | 39.97 | 34.26 | 52.61 | |||||||||||||
1994 | 37.00 | 37.50 | 49.03 | 53.30 | 58.03 | 69.63 | 74.97 | 73.00 | 65.80 | 51.35 | 34.47 | 34.38 | b | 53.21 | ||||||||||||
1995 | 38.84 | 43.86 | 44.73 | a | 48.27 | 53.32 | 63.77 | 70.74 | 73.10 | 67.03 | 51.23 | 44.67 | f | 42.40 | p | 55.49 | b | |||||||||
1996 | 35.36 | f | 42.34 | 43.76 | b | 49.37 | 58.90 | 65.67 | 74.37 | a | 71.60 | a | 61.93 | 48.50 | a | 41.04 | d | 35.50 | a | 53.91 | a | |||||
1997 | 37.84 | 37.46 | ----- | z | 50.17 | a | 65.97 | 66.57 | 69.81 | 74.26 | 68.50 | 51.83 | a | 43.00 | 36.84 | 54.75 | a | |||||||||
1998 | 37.06 | 39.57 | 42.00 | 45.73 | 52.00 | 60.60 | 73.00 | 74.00 | 63.40 | 50.52 | 41.57 | 35.84 | 51.27 | |||||||||||||
1999 | ----- | z | 38.64 | 42.68 | 45.20 | 56.74 | 63.53 | 69.60 | a | 68.45 | 63.93 | a | 51.23 | 41.20 | 36.52 | 52.52 | a | |||||||||
2000 | 40.42 | 40.79 | a | 44.26 | 53.43 | 62.03 | 68.80 | 71.90 | 72.84 | 62.87 | 52.68 | 37.80 | 37.23 | 53.75 | ||||||||||||
2001 | 35.68 | 37.64 | 47.65 | 48.03 | 65.17 | a | 67.53 | 70.52 | 73.16 | 65.90 | 55.35 | 44.80 | 33.55 | 53.75 | ||||||||||||
2002 | 33.87 | 36.41 | a | 40.37 | a | 51.63 | 57.90 | 67.10 | 75.00 | 67.97 | 64.82 | b | 49.87 | 43.03 | 33.03 | 51.75 | ||||||||||
2003 | 38.06 | 39.11 | 44.35 | 46.14 | a | 57.87 | a | 65.70 | 73.94 | 70.35 | 63.80 | 55.00 | 36.43 | 30.35 | 51.76 | |||||||||||
2004 | 31.83 | a | 33.03 | 45.23 | 46.83 | 53.23 | 60.43 | 66.81 | 63.42 | 55.21 | a | 45.03 | a | 31.00 | a | 36.52 | 47.38 | |||||||||
2005 | 42.71 | 43.96 | 48.83 | a | 50.17 | 62.94 | 67.80 | 78.89 | d | 74.74 | d | 64.07 | 56.93 | a | 49.56 | c | 40.77 | 56.78 | ||||||||
2006 | 40.77 | a | 43.80 | c | 41.32 | f | 51.75 | b | 65.61 | 72.84 | e | 81.71 | 73.86 | b | 67.30 | 56.70 | a | 48.23 | 39.23 | a | 58.35 | a | ||||
2007 | 37.93 | b | 43.86 | 51.03 | 56.53 | 63.68 | 70.30 | 78.58 | 77.55 | 67.40 | 56.03 | 49.60 | 37.39 | 57.49 | ||||||||||||
2008 | 39.65 | 42.93 | a | 47.53 | a | 52.37 | 60.00 | 72.23 | 78.13 | a | 76.87 | 70.43 | 57.84 | 52.80 | 38.77 | 57.46 | ||||||||||
2009 | 43.97 | 40.54 | 47.44 | o | 50.37 | 67.58 | 68.10 | 79.77 | a | 74.19 | 70.67 | 55.00 | 46.97 | 37.87 | 57.73 | a | ||||||||||
2010 | 40.63 | a | 44.04 | 46.53 | a | 50.07 | 56.77 | 68.73 | 78.00 | a | 74.55 | 68.10 | 58.76 | b | 46.31 | a | 43.39 | 56.32 | ||||||||
2011 | 42.16 | 40.00 | 47.94 | 52.80 | 57.26 | 67.50 | 75.48 | 76.23 | 70.43 | 58.48 | 43.97 | 37.39 | 55.80 | |||||||||||||
2012 | 42.00 | 42.86 | 47.23 | 54.80 | 65.19 | 69.83 | 75.52 | 78.35 | ----- | z | ----- | z | 47.40 | 39.81 | 56.30 | b | ||||||||||
2013 | 37.87 | 41.00 | 52.71 | 56.90 | 63.39 | 72.40 | 80.52 | 75.87 | 68.13 | 52.97 | 46.40 | 40.19 | 57.36 | |||||||||||||
2014 | 44.90 | 47.86 | 51.87 | 56.73 | 63.06 | 71.77 | 79.58 | 74.52 | 71.97 | 60.32 | 48.33 | 44.00 | 59.58 | |||||||||||||
2015 | 44.00 | 49.93 | 54.19 | 54.30 | 59.77 | 73.73 | 74.10 | 77.81 | 71.73 | 64.81 | 44.03 | 37.90 | 58.86 | |||||||||||||
2016 | 40.61 | 45.52 | 53.39 | 56.10 | 61.03 | 74.63 | 77.42 | 78.42 | 67.00 | 60.48 | 49.03 | 41.87 | 58.79 | |||||||||||||
2017 | 41.68 | 47.50 | 52.43 | a | 55.73 | 62.00 | 72.57 | 80.87 | 77.48 | 68.80 | 58.29 | 51.80 | 42.35 | 59.29 | ||||||||||||
2018 | 45.23 | 43.36 | 49.74 | 58.53 | 63.50 | c | 71.50 | 81.10 | 79.06 | 71.03 | 58.81 | 47.00 | 41.95 | l | 60.81 | a | ||||||||||
2019 | 42.96 | d | 38.50 | 47.45 | 56.97 | 57.87 | 70.97 | 75.87 | 76.06 | 67.07 | 53.48 | 46.63 | 41.48 | 56.28 | ||||||||||||
2020 | 41.23 | 43.07 | 46.58 | 54.50 | 63.97 | 70.07 | 76.29 | 79.35 | 70.43 | 61.13 | 45.60 | 38.84 | 57.59 | |||||||||||||
2021 | 41.06 | 45.29 | 45.32 | 58.50 | 64.23 | 77.13 | 82.42 | 77.26 | 71.77 | 54.45 | 51.53 | 41.16 | 59.18 | |||||||||||||
2022 | 41.00 | 42.75 | 50.61 | 56.41 | a | 62.55 | 73.27 | 80.00 | 80.37 | a | 72.47 | 58.35 | 42.77 | 39.32 | 58.32 | |||||||||||
2023 | 40.90 | 39.57 | 45.68 | 54.30 | 61.77 | 67.13 | 81.52 | 76.16 | 68.73 | 58.90 | 47.20 | 43.45 | 57.11 | |||||||||||||
2024 | 42.61 | 45.17 | 47.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.16 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.84 | 39.60 | 44.03 | 50.36 | 58.03 | 65.94 | 73.01 | 71.77 | 64.67 | 53.53 | 42.54 | 36.68 | 52.96 | |||||||||||||
S.D. | 4.11 | 3.74 | 3.81 | 3.73 | 3.60 | 3.79 | 3.77 | 3.47 | 3.61 | 3.50 | 3.90 | 3.20 | 2.72 | |||||||||||||
SKEW | -0.42 | 0.21 | 0.57 | -0.04 | 0.53 | 0.53 | 0.69 | 0.36 | -0.20 | 0.41 | 0.21 | -0.03 | 1.01 | |||||||||||||
MAX | 45.23 | 49.93 | 54.19 | 58.53 | 67.58 | 77.13 | 82.42 | 80.37 | 72.47 | 64.81 | 52.80 | 44.00 | 59.58 | |||||||||||||
MIN | 22.87 | 32.25 | 36.20 | 40.00 | 50.71 | 58.17 | 66.16 | 63.42 | 55.21 | 45.03 | 31.00 | 28.85 | 47.38 | |||||||||||||
YRS | 86 | 88 | 86 | 88 | 89 | 89 | 89 | 87 | 88 | 86 | 87 | 85 | 73 |