YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.83 | y | 77.81 | 80.57 | 64.77 | 55.20 | 45.90 | 64.85 | g | |||||
1944 | 48.87 | 49.34 | 54.84 | 57.40 | 65.71 | 69.80 | 81.65 | 79.26 | 78.93 | 68.84 | 50.23 | 43.10 | a | 62.33 | ||||||||||||
1945 | 48.13 | 49.96 | 49.16 | 56.10 | 65.39 | 72.80 | 83.23 | 81.68 | 73.60 | 63.65 | 49.93 | a | 47.48 | 61.76 | ||||||||||||
1946 | 45.32 | 48.43 | 52.10 | 60.10 | 68.45 | 70.03 | 80.03 | 80.35 | 73.57 | 55.74 | 49.79 | a | 45.34 | b | 60.77 | |||||||||||
1947 | 42.19 | 53.57 | 57.29 | 62.83 | 71.26 | 68.83 | a | 77.10 | 76.81 | 73.73 | 61.23 | 51.33 | 45.84 | 61.83 | ||||||||||||
1948 | 45.48 | 45.69 | 50.68 | 53.87 | 63.45 | 74.33 | 77.37 | a | 74.90 | 73.66 | a | 63.58 | 47.33 | 41.65 | 59.33 | |||||||||||
1949 | 36.00 | a | 45.79 | 52.39 | 61.33 | 69.13 | 75.10 | a | 79.39 | 79.58 | 75.53 | 58.90 | 60.70 | 45.94 | 61.65 | |||||||||||
1950 | 37.19 | 48.26 | a | 49.26 | 57.77 | 65.77 | 70.30 | 79.90 | 84.00 | a | 78.10 | a | 61.42 | 54.27 | 52.03 | 61.52 | ||||||||||
1951 | 46.63 | a | 49.18 | 50.39 | 66.93 | 67.13 | 79.00 | 82.61 | 81.00 | 81.03 | 61.03 | 53.20 | 43.74 | 63.49 | ||||||||||||
1952 | 43.77 | 50.38 | 50.29 | 62.90 | 68.32 | 68.87 | 83.03 | 80.61 | 79.37 | 70.16 | 49.13 | 49.10 | a | 62.99 | ||||||||||||
1953 | 52.61 | 51.39 | 53.03 | 59.33 | 61.52 | 65.57 | 80.26 | 78.16 | 76.00 | 65.10 | 57.13 | 48.77 | 62.41 | |||||||||||||
1954 | 47.42 | 54.11 | 53.55 | 60.83 | 67.29 | 66.53 | 75.00 | 72.61 | 70.50 | 62.61 | 56.90 | 47.03 | 61.20 | |||||||||||||
1955 | 44.52 | 47.04 | 49.19 | 52.17 | 63.71 | 71.63 | 73.26 | 79.16 | 73.43 | 62.71 | 50.60 | 48.29 | 59.64 | |||||||||||||
1956 | 47.06 | 43.75 | a | 52.74 | 60.60 | 66.94 | 69.20 | 80.29 | 78.39 | 76.90 | 61.10 | 51.53 | 47.13 | 61.30 | ||||||||||||
1957 | 38.90 | 50.15 | a | 53.29 | 61.00 | 66.71 | 72.53 | 77.77 | 77.06 | 79.03 | 61.23 | 52.43 | 49.39 | 61.63 | ||||||||||||
1958 | 49.55 | 55.14 | 53.10 | 58.40 | 73.16 | 71.57 | 84.00 | 86.00 | 74.97 | 68.52 | 53.60 | 53.23 | 65.10 | |||||||||||||
1959 | 49.39 | 49.18 | 55.65 | 62.43 | 62.45 | 72.23 | 82.52 | 81.13 | 70.40 | 64.68 | 55.43 | 47.61 | 62.76 | |||||||||||||
1960 | 45.19 | 50.45 | 56.74 | 59.80 | 62.35 | 75.97 | 84.68 | 78.32 | 75.13 | 65.19 | 53.07 | a | 46.68 | 62.80 | ||||||||||||
1961 | 51.94 | 53.39 | 53.26 | 60.43 | 64.03 | 76.87 | 81.35 | 84.84 | 71.33 | 63.00 | 51.03 | a | 47.48 | 63.25 | ||||||||||||
1962 | 46.74 | 51.04 | 51.87 | 63.87 | 60.00 | 72.63 | 79.90 | 77.74 | 76.00 | 61.48 | 54.93 | 48.74 | 62.08 | |||||||||||||
1963 | 42.29 | 58.25 | 53.87 | 54.33 | 65.58 | 68.77 | 72.97 | 78.39 | 78.03 | 64.26 | 53.37 | 48.48 | 61.55 | |||||||||||||
1964 | 47.60 | a | 50.72 | 51.29 | 56.00 | 62.29 | 68.47 | 77.32 | 76.55 | 72.27 | 66.16 | 48.13 | 46.67 | a | 60.29 | |||||||||||
1965 | 45.39 | 52.57 | 58.32 | 60.17 | 62.84 | 69.97 | 81.29 | 79.13 | 74.10 | 66.90 | 55.03 | 45.32 | 62.59 | |||||||||||||
1966 | 45.45 | 49.25 | 54.00 | 63.50 | 67.48 | 73.20 | 77.29 | 80.10 | 76.73 | 64.77 | 52.23 | 49.58 | 62.80 | |||||||||||||
1967 | 48.39 | 52.43 | 52.00 | 53.83 | 67.16 | 74.57 | 82.81 | 87.77 | 80.87 | 63.16 | 54.33 | 45.84 | 63.60 | |||||||||||||
1968 | 47.52 | 56.38 | 57.65 | 58.67 | 64.94 | 72.37 | 80.03 | 75.84 | 72.70 | 62.48 | 53.80 | 45.65 | 62.33 | |||||||||||||
1969 | 41.58 | 46.57 | 58.10 | 59.33 | 68.97 | 71.30 | 76.32 | 77.45 | 74.17 | 60.94 | 52.00 | 48.35 | 61.26 | |||||||||||||
1970 | 47.19 | 54.79 | 55.23 | 54.67 | 65.68 | 75.17 | 82.48 | 81.52 | 71.03 | 63.71 | 53.53 | 45.35 | 62.53 | |||||||||||||
1971 | 45.42 | 49.29 | 49.68 | 57.30 | 65.32 | 67.97 | 79.35 | 82.23 | 71.93 | 59.65 | 50.27 | 44.42 | 60.23 | |||||||||||||
1972 | 44.35 | 51.17 | 57.10 | 55.53 | 67.81 | 71.90 | 83.87 | 82.90 | 72.73 | 62.32 | 53.41 | a | 43.87 | 62.25 | ||||||||||||
1973 | 45.23 | 53.86 | 51.55 | 60.50 | 69.26 | 72.87 | 81.90 | 78.55 | 74.27 | 63.35 | 48.40 | 50.00 | 62.48 | |||||||||||||
1974 | 44.19 | 47.64 | 53.63 | a | 57.77 | 62.71 | 72.77 | 78.03 | 81.29 | 82.83 | 68.48 | 53.90 | 48.55 | 62.65 | ||||||||||||
1975 | 48.39 | 48.61 | 50.26 | 53.13 | 64.87 | 70.33 | 78.71 | 75.00 | 78.47 | 60.84 | 51.07 | 49.03 | a | 60.73 | ||||||||||||
1976 | 47.87 | 50.24 | 52.16 | 55.97 | 66.26 | 68.07 | 78.52 | 74.58 | 74.63 | 66.06 | 54.23 | 45.48 | 61.17 | |||||||||||||
1977 | 49.06 | 55.29 | 51.94 | 62.87 | 60.19 | 74.80 | 78.10 | 85.35 | 70.34 | a | 63.29 | 53.13 | 49.35 | 62.81 | ||||||||||||
1978 | 48.26 | 53.18 | 59.81 | 57.47 | 62.84 | 74.33 | 78.19 | 78.26 | 69.97 | 67.74 | 49.70 | 43.39 | 61.93 | |||||||||||||
1979 | 39.35 | 48.68 | 58.81 | 58.87 | 67.68 | 74.83 | 82.19 | 78.19 | 77.03 | 67.23 | 51.10 | 50.81 | 62.90 | |||||||||||||
1980 | 45.19 | 53.14 | 53.87 | 62.50 | 63.35 | 66.73 | 78.84 | 78.71 | 75.67 | 68.10 | 55.37 | 50.74 | 62.68 | |||||||||||||
1981 | 48.06 | 52.93 | 56.00 | 59.30 | 64.39 | 71.17 | 78.13 | 83.97 | 77.43 | 62.52 | 54.77 | 48.58 | 63.10 | |||||||||||||
1982 | 43.45 | 50.54 | 54.26 | 57.70 | 67.23 | 72.37 | 76.55 | 79.77 | 72.30 | 63.48 | 52.33 | 46.19 | 61.35 | |||||||||||||
1983 | 50.73 | a | 53.00 | 55.97 | 59.77 | 68.00 | 69.23 | 72.48 | 78.13 | a | 71.37 | 64.29 | 54.29 | b | 44.10 | b | 61.78 | |||||||||
1984 | 49.31 | b | 53.24 | 58.06 | 56.73 | 64.29 | 69.27 | 80.35 | 80.35 | 74.59 | a | 60.06 | 51.77 | 43.58 | 61.80 | |||||||||||
1985 | 42.71 | 49.41 | a | 52.06 | 63.03 | 67.03 | 74.63 | 85.03 | 79.16 | 68.10 | 63.03 | 44.14 | a | 42.81 | 60.93 | |||||||||||
1986 | 49.77 | a | 50.61 | 60.10 | 57.13 | 65.06 | 75.63 | 74.26 | 84.84 | 68.67 | 65.03 | 53.21 | b | 45.52 | 62.49 | |||||||||||
1987 | 46.87 | 52.21 | 55.68 | 66.03 | 68.30 | a | 76.67 | 74.03 | 80.52 | 75.47 | 71.42 | 52.70 | 43.00 | 63.57 | ||||||||||||
1988 | 44.84 | 53.21 | 55.48 | 60.07 | 62.61 | 68.93 | 79.00 | 78.84 | 74.33 | 65.42 | 49.73 | 44.10 | 61.38 | |||||||||||||
1989 | 44.65 | 40.93 | 50.06 | 63.83 | 61.29 | 69.93 | 71.48 | 71.39 | 74.90 | 60.90 | 50.33 | 43.30 | a | 58.58 | ||||||||||||
1990 | 45.26 | 48.32 | 58.52 | 63.37 | 64.45 | 70.20 | 82.35 | 79.42 | 77.40 | 62.32 | 52.60 | 39.90 | 62.01 | |||||||||||||
1991 | 46.81 | 57.65 | b | 52.23 | 55.80 | 60.68 | 67.77 | 80.94 | 81.60 | a | 80.53 | 68.00 | 53.73 | 46.42 | 62.68 | |||||||||||
1992 | 50.45 | 57.52 | 61.35 | 63.87 | 73.68 | 76.53 | 79.16 | 83.97 | 74.90 | 65.45 | 52.90 | 43.55 | 65.28 | |||||||||||||
1993 | 42.10 | 47.11 | 57.32 | 57.47 | 68.87 | a | 69.07 | 71.52 | 77.03 | a | 79.86 | a | 69.68 | 48.97 | 46.63 | a | 61.30 | |||||||||
1994 | 50.84 | 48.71 | 59.52 | 61.13 | 67.94 | 69.47 | 83.13 | 80.35 | 79.97 | 64.26 | 47.77 | 50.21 | b | 63.61 | ||||||||||||
1995 | 48.71 | 55.89 | 57.00 | 59.40 | 67.52 | 70.53 | 79.29 | 78.71 | 78.03 | a | 64.23 | 56.27 | 48.07 | a | 63.64 | |||||||||||
1996 | 48.50 | k | 50.81 | b | 56.87 | 61.55 | a | 63.00 | a | 71.73 | 83.97 | 83.00 | 73.13 | 62.41 | b | 54.64 | b | 48.59 | b | 64.52 | a | |||||
1997 | 47.47 | a | 51.00 | a | 55.52 | 58.83 | a | 71.79 | b | 70.83 | a | 78.79 | b | 81.67 | a | 74.96 | b | 61.14 | i | 55.00 | c | 45.03 | 62.81 | a | ||
1998 | 50.03 | 52.59 | a | 55.55 | 58.93 | a | 59.66 | b | 70.43 | 81.16 | 82.42 | 79.40 | 63.14 | c | 53.07 | c | 44.93 | a | 62.61 | |||||||
1999 | 48.46 | c | 49.04 | 51.04 | c | 58.83 | a | 62.13 | 70.31 | a | 78.39 | 78.79 | c | 78.24 | a | 67.07 | a | 56.28 | a | 46.66 | b | 62.10 | ||||
2000 | 45.10 | a | 49.72 | 53.03 | a | 62.17 | 65.55 | 74.50 | 77.32 | 80.59 | b | 76.30 | c | 64.90 | b | 47.96 | b | 46.43 | c | 61.96 | ||||||
2001 | 47.74 | 48.88 | d | 56.68 | c | 56.96 | d | 70.48 | b | 70.37 | 79.42 | 81.03 | 77.46 | d | 64.61 | c | 53.42 | d | 46.91 | i | 64.28 | a | ||||
2002 | 45.44 | f | 54.36 | c | 51.63 | d | 60.10 | 64.48 | b | 73.27 | d | 82.60 | a | 82.60 | a | 78.45 | h | 61.97 | b | 55.65 | g | 48.91 | h | 66.38 | d | |
2003 | 51.71 | c | 51.48 | c | 56.07 | d | 57.35 | d | 68.12 | g | 76.81 | c | 85.47 | a | 83.83 | b | 80.17 | f | 69.71 | c | 50.48 | e | 48.26 | h | 64.77 | c |
2004 | 48.54 | e | 51.88 | c | 60.82 | c | 63.96 | e | 67.29 | c | 72.54 | d | 82.37 | a | 81.55 | 70.85 | c | 63.42 | g | 51.46 | f | 48.79 | g | 66.64 | c | |
2005 | 51.00 | f | 54.88 | d | 60.68 | f | 60.61 | g | 67.72 | f | 69.00 | d | 81.85 | d | 84.78 | h | 76.14 | h | 65.46 | g | 50.59 | h | 46.94 | m | 68.58 | i |
2006 | 50.72 | f | 53.42 | i | 59.95 | k | 63.50 | n | 70.78 | h | 73.63 | k | 83.70 | h | 80.10 | k | 78.15 | q | 64.50 | c | 61.67 | x | ----- | z | 64.50 | k |
2007 | 49.87 | p | 50.50 | 59.35 | 60.47 | 66.85 | d | 71.97 | a | 80.65 | 79.77 | 72.88 | d | 59.90 | 50.50 | 45.41 | d | 63.48 | a | |||||||
2008 | 42.17 | m | 50.29 | h | ----- | z | ----- | z | 65.72 | b | 70.37 | ----- | z | 80.39 | 78.04 | f | 61.68 | c | 53.74 | c | 44.07 | b | 62.66 | f | ||
2009 | 46.38 | b | 51.64 | 50.60 | a | 59.22 | g | 69.03 | 71.80 | 84.48 | 81.13 | 76.62 | a | 60.00 | a | 52.00 | 40.80 | a | 62.23 | a | ||||||
2010 | 50.83 | b | 53.14 | 55.35 | 58.57 | b | 62.13 | 68.03 | 80.60 | a | 80.47 | a | 72.80 | 62.19 | 51.31 | a | 48.45 | k | 63.22 | a | ||||||
2011 | 50.32 | c | 47.56 | a | 53.13 | 55.41 | a | 59.58 | 68.40 | 74.16 | 79.42 | 80.07 | 62.10 | 51.40 | 43.87 | 60.45 | ||||||||||
2012 | 48.23 | 50.52 | 51.10 | 60.30 | 64.90 | 68.29 | b | 76.03 | 82.74 | 77.57 | 65.17 | b | 55.67 | 45.87 | 62.20 | |||||||||||
2013 | 44.03 | 49.04 | 58.39 | 61.60 | 68.29 | 74.30 | 83.71 | 80.57 | a | 73.73 | 62.00 | 51.57 | 40.48 | 62.31 | ||||||||||||
2014 | 47.23 | 50.32 | 58.10 | 61.77 | 71.57 | a | 72.17 | 82.52 | 84.77 | 79.80 | 69.23 | 53.53 | 50.06 | 65.09 | ||||||||||||
2015 | 48.30 | h | 57.64 | 63.55 | 60.73 | 66.23 | 79.63 | c | 84.87 | 82.61 | 75.77 | 70.42 | 51.45 | a | 46.60 | k | 69.29 | b | ||||||||
2016 | 46.07 | d | 55.45 | r | 55.61 | 66.90 | 68.68 | 76.37 | ----- | z | 88.42 | l | 76.00 | a | 65.19 | 60.50 | b | 43.77 | 62.12 | c | ||||||
2017 | 44.12 | e | 50.68 | 54.52 | 59.37 | c | 74.45 | b | 73.73 | 83.16 | 86.45 | 78.10 | 64.77 | 53.00 | 44.68 | 63.92 | ||||||||||
2018 | 49.39 | 49.79 | 53.52 | 61.87 | 68.97 | 73.73 | 85.23 | 84.32 | 75.80 | 67.68 | 54.50 | 48.13 | 64.41 | |||||||||||||
2019 | 49.26 | 43.11 | 54.68 | 61.43 | 69.77 | 76.70 | 80.16 | 83.03 | 72.30 | 61.58 | 53.40 | 46.84 | 62.69 | |||||||||||||
2020 | 50.58 | 52.31 | 55.39 | 63.63 | 68.77 | 71.80 | 80.94 | 83.52 | 77.43 | 67.45 | 53.00 | 48.32 | 64.43 | |||||||||||||
2021 | 49.18 | c | 48.54 | 56.29 | 66.60 | 69.19 | 78.33 | c | 84.83 | a | 84.58 | 77.77 | 61.84 | 55.53 | 45.06 | 64.81 | ||||||||||
2022 | 49.74 | 51.75 | 58.16 | 56.97 | 63.39 | 73.93 | b | 83.80 | a | 86.74 | 79.33 | 71.87 | 50.69 | a | 46.23 | 64.38 | ||||||||||
2023 | 49.39 | 50.04 | 51.06 | 56.93 | 73.42 | 76.86 | a | 86.48 | 86.42 | 75.57 | 64.90 | 53.37 | 49.90 | 64.53 | ||||||||||||
2024 | 51.05 | i | 52.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.90 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.68 | 50.94 | 54.65 | 59.69 | 66.16 | 72.02 | 80.03 | 80.53 | 75.52 | 64.24 | 52.63 | 46.39 | 62.33 | |||||||||||||
S.D. | 3.33 | 3.26 | 3.25 | 3.26 | 3.40 | 3.10 | 3.51 | 3.24 | 3.23 | 3.14 | 2.76 | 2.71 | 1.38 | |||||||||||||
SKEW | -0.92 | -0.20 | 0.32 | 0.04 | 0.20 | 0.32 | -0.53 | -0.15 | -0.08 | 0.32 | 0.04 | -0.02 | -0.05 | |||||||||||||
MAX | 52.61 | 58.25 | 63.55 | 66.93 | 74.45 | 79.63 | 86.48 | 87.77 | 82.83 | 71.87 | 60.70 | 53.23 | 65.28 | |||||||||||||
MIN | 36.00 | 40.93 | 49.16 | 52.17 | 59.58 | 65.57 | 71.48 | 71.39 | 68.10 | 55.74 | 44.14 | 39.90 | 58.58 | |||||||||||||
YRS | 73 | 78 | 77 | 76 | 77 | 79 | 77 | 78 | 76 | 78 | 77 | 73 | 66 |