YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.67 | v | 52.65 | f | 43.82 | i | ----- | z |
1953 | 47.47 | 43.48 | c | 53.28 | b | 56.50 | 59.61 | 74.48 | 77.97 | 77.21 | e | 73.00 | e | 62.56 | 53.88 | 41.42 | 60.07 | |||||||||
1954 | 46.58 | a | 52.27 | 52.42 | 61.91 | a | 65.24 | 72.82 | 78.84 | 74.34 | 75.32 | 66.45 | b | 54.88 | j | 47.52 | h | 64.62 | b | |||||||
1955 | 39.58 | m | 44.25 | j | 51.12 | j | 54.05 | j | 60.12 | r | 71.84 | h | 75.53 | m | 73.88 | g | 70.17 | d | 65.22 | a | 52.77 | 49.87 | h | 62.72 | i | |
1956 | 48.91 | d | 43.24 | l | 52.44 | 56.50 | e | 66.33 | d | 77.57 | b | 77.37 | 74.47 | b | 74.80 | b | 62.15 | 47.85 | d | 44.07 | h | 63.84 | b | |||
1957 | 47.13 | 54.30 | a | 51.22 | b | 55.98 | 61.02 | a | 75.62 | a | 78.98 | g | 75.82 | 70.57 | a | 61.06 | 47.37 | 48.22 | a | 58.94 | a | |||||
1958 | 42.52 | 48.29 | 46.37 | 56.15 | 68.44 | 76.38 | 78.73 | 76.10 | 71.37 | 63.11 | 50.67 | a | 49.06 | 60.60 | ||||||||||||
1959 | 45.90 | 45.04 | b | 49.63 | 60.43 | 62.43 | b | 76.77 | 78.84 | 74.44 | 71.20 | 62.20 | a | 51.75 | 45.44 | 60.34 | ||||||||||
1960 | 40.90 | 41.98 | 54.69 | 58.18 | 63.63 | 76.87 | 78.87 | 76.53 | 72.88 | 60.73 | 53.17 | 43.16 | 60.13 | |||||||||||||
1961 | 46.09 | h | 47.29 | b | 51.17 | b | 59.67 | d | 64.48 | b | 76.92 | d | 77.34 | 75.36 | b | 70.13 | 60.43 | b | 49.22 | 46.44 | e | 61.68 | a | |||
1962 | 44.67 | b | 49.80 | a | 46.48 | 61.07 | 63.40 | 71.23 | 77.19 | 78.13 | a | 73.14 | a | 63.63 | 55.43 | 48.65 | d | 61.07 | ||||||||
1963 | 43.82 | c | 51.38 | 50.61 | 56.33 | 67.35 | a | 70.85 | c | 79.67 | a | 74.66 | 73.32 | 65.23 | a | 53.50 | b | 46.58 | 61.11 | |||||||
1964 | 40.31 | b | 40.22 | 47.18 | 55.65 | 63.50 | a | 71.60 | 79.08 | a | 73.84 | 69.23 | 64.32 | 48.58 | 45.65 | a | 58.26 | |||||||||
1965 | 46.98 | a | 44.63 | a | 48.19 | e | 57.12 | b | 60.97 | 68.22 | 77.28 | a | 76.21 | 69.91 | a | 62.19 | 55.83 | 46.03 | 59.47 | |||||||
1966 | ----- | z | 41.39 | 53.11 | 57.82 | 66.32 | 74.37 | 79.11 | 76.31 | 71.00 | b | 60.88 | b | 54.38 | 46.27 | 61.91 | a | |||||||||
1967 | 44.63 | 48.14 | 55.18 | 55.95 | 63.73 | 72.02 | 77.32 | 76.08 | 71.78 | 63.82 | 55.43 | 43.44 | 60.63 | |||||||||||||
1968 | 45.48 | a | 51.31 | 51.03 | 55.10 | 64.35 | 74.65 | 76.74 | 73.56 | 71.08 | 63.56 | 50.97 | 43.85 | 60.14 | ||||||||||||
1969 | 48.84 | 45.86 | 46.63 | a | 58.97 | a | 66.27 | 72.92 | 78.89 | 79.24 | 73.35 | 60.92 | 51.80 | 47.70 | a | 60.95 | ||||||||||
1970 | 44.15 | 49.41 | 49.61 | 54.50 | a | 67.10 | 75.30 | 80.42 | 77.24 | 71.18 | 58.37 | a | 52.95 | 48.45 | 60.72 | |||||||||||
1971 | 45.69 | 47.00 | 53.44 | 56.76 | a | 62.79 | 74.24 | a | 79.75 | a | 75.44 | 72.38 | 59.60 | 51.30 | 43.30 | a | 60.14 | |||||||||
1972 | 43.97 | 48.55 | 59.21 | 59.62 | a | 65.44 | 75.07 | a | 79.58 | 79.37 | a | 75.34 | a | 65.95 | a | 50.23 | b | 45.88 | a | 62.35 | ||||||
1973 | 41.75 | a | 47.21 | 47.03 | 56.37 | 65.81 | 73.09 | a | 76.92 | 77.15 | 72.58 | 67.53 | a | 54.36 | b | 46.98 | 60.56 | |||||||||
1974 | 45.61 | 47.82 | 55.89 | 65.12 | 69.42 | a | 81.48 | 78.73 | a | 77.11 | 72.05 | 62.60 | a | 50.55 | 40.08 | 62.21 | ||||||||||
1975 | 42.97 | 43.50 | 51.89 | 51.83 | 62.27 | 72.03 | 76.74 | ----- | z | 73.12 | f | 61.60 | 51.78 | 47.55 | 56.22 | b | ||||||||||
1976 | 46.79 | 51.12 | 51.90 | 57.10 | 65.87 | 74.28 | a | 77.03 | a | 74.19 | m | 69.35 | 58.47 | 51.10 | 42.85 | 58.72 | a | |||||||||
1977 | 43.77 | 47.34 | 46.00 | 58.05 | 61.44 | 76.08 | 80.63 | a | 79.18 | 75.07 | 65.26 | 54.30 | 50.11 | 61.44 | ||||||||||||
1978 | 46.60 | b | 47.68 | 55.48 | a | 56.30 | 64.07 | a | 76.20 | 79.37 | 76.02 | 71.55 | 64.94 | 51.37 | 43.37 | 61.08 | ||||||||||
1979 | 42.52 | 46.62 | 50.40 | b | 57.20 | 66.08 | 76.73 | 76.35 | 71.16 | 73.97 | 63.21 | 48.48 | 45.73 | 59.87 | ||||||||||||
1980 | 46.55 | 50.72 | 50.58 | 56.28 | 60.31 | 73.40 | 80.74 | 76.74 | 71.53 | 61.55 | 51.68 | 50.10 | 60.85 | |||||||||||||
1981 | 49.29 | 48.75 | 49.10 | 59.93 | a | 64.19 | 79.57 | 80.21 | 78.13 | 73.32 | 62.15 | 55.60 | 48.65 | 62.41 | ||||||||||||
1982 | 47.54 | d | 50.25 | 54.00 | 60.17 | 64.63 | 72.35 | 79.34 | 78.00 | 73.73 | 60.05 | 52.91 | a | 45.02 | 61.50 | |||||||||||
1983 | 45.78 | a | 47.29 | 50.69 | 54.20 | c | 62.75 | k | 67.85 | 78.32 | 76.38 | a | 76.36 | a | 63.55 | 51.67 | a | 48.58 | a | 60.06 | a | |||||
1984 | 45.94 | 47.12 | 52.90 | 56.97 | 70.07 | a | 74.07 | 76.69 | ----- | z | 72.95 | 59.94 | 50.82 | 46.02 | a | 59.41 | a | |||||||||
1985 | 44.81 | 46.88 | 52.65 | 60.98 | 66.37 | 75.28 | 79.16 | 77.92 | a | 69.50 | 62.47 | 52.02 | 47.84 | 61.32 | ||||||||||||
1986 | 50.56 | 51.12 | 56.21 | 60.92 | 66.52 | 75.88 | 76.82 | 79.56 | 69.48 | 61.21 | 54.30 | 46.19 | 62.40 | |||||||||||||
1987 | 43.40 | 47.18 | 50.26 | 61.17 | 64.65 | 75.40 | 77.90 | 76.29 | 70.74 | a | 66.15 | 51.07 | 44.05 | b | 60.69 | |||||||||||
1988 | 46.08 | 50.26 | 51.87 | 58.83 | 65.84 | 75.75 | 79.42 | a | 77.97 | 70.73 | 66.58 | 52.62 | 45.45 | 61.78 | ||||||||||||
1989 | 43.53 | 51.41 | 57.55 | 63.83 | 67.19 | 75.02 | a | 82.31 | 79.46 | d | 74.20 | 63.39 | 53.43 | 46.03 | b | 63.11 | ||||||||||
1990 | 45.08 | a | 46.94 | a | 54.24 | d | 61.22 | 65.76 | 79.58 | 77.50 | a | 74.31 | 73.23 | b | 63.52 | a | 54.32 | 46.71 | e | 61.87 | ||||||
1991 | 45.43 | a | 51.58 | d | 48.66 | f | 57.27 | 64.56 | 71.33 | 79.21 | 78.08 | 72.07 | 64.35 | a | 51.45 | b | 47.15 | a | 62.04 | a | ||||||
1992 | 44.58 | 49.88 | 52.40 | 60.40 | 67.84 | 74.18 | 78.23 | 77.31 | 74.38 | 64.55 | a | 47.98 | 45.52 | b | 61.44 | |||||||||||
1993 | 49.58 | e | 47.67 | d | 53.61 | 59.03 | 68.55 | 74.05 | 78.28 | a | 77.18 | a | 71.23 | 62.98 | 50.76 | a | 46.04 | c | 61.58 | |||||||
1994 | 45.35 | a | 45.96 | b | 54.78 | a | 58.90 | a | 65.44 | 79.60 | 80.71 | 80.57 | a | 74.53 | a | 61.30 | a | 50.14 | a | 47.18 | a | 62.04 | ||||
1995 | 46.02 | a | 52.11 | 53.69 | 55.45 | a | 62.90 | a | 71.22 | 79.15 | d | 80.38 | a | 74.43 | b | 64.66 | 56.09 | b | 47.16 | c | 61.94 | |||||
1996 | 46.70 | d | 53.82 | a | 52.97 | 60.43 | 69.10 | b | 77.20 | 80.79 | 78.33 | b | 71.77 | 63.74 | 53.90 | 46.93 | a | 62.97 | ||||||||
1997 | 45.85 | 46.42 | h | 56.63 | d | 57.45 | a | 71.05 | 73.62 | 79.77 | c | 79.05 | 76.71 | b | 62.03 | a | 53.17 | f | 41.30 | h | 66.91 | c | ||||
1998 | 45.83 | d | 44.04 | e | 50.46 | h | 54.33 | d | 64.53 | 72.85 | 80.75 | e | 78.43 | a | 74.93 | b | 61.87 | e | 52.02 | i | 45.69 | e | 62.33 | b | ||
1999 | 44.84 | f | 49.37 | e | 53.38 | b | 55.25 | b | 65.97 | a | 75.83 | 78.15 | 77.89 | 74.50 | a | 64.98 | b | 56.00 | f | 44.18 | f | 66.15 | c | |||
2000 | 47.35 | g | 49.54 | f | 52.85 | 61.85 | 71.16 | 77.75 | 79.58 | 78.00 | 75.27 | 63.55 | 47.37 | 48.95 | 65.63 | b | ||||||||||
2001 | 43.85 | 47.11 | 52.35 | 59.33 | 69.52 | 76.77 | 79.32 | 77.95 | 74.88 | 65.42 | 55.75 | 44.17 | a | 62.20 | ||||||||||||
2002 | 45.48 | 48.37 | a | 51.48 | a | 63.20 | 65.66 | 77.59 | a | 79.38 | a | 78.21 | 75.03 | 61.60 | 54.25 | 44.63 | 62.07 | |||||||||
2003 | 50.75 | a | 48.94 | a | 52.10 | 57.88 | b | 68.26 | 75.80 | 81.57 | c | 78.16 | 74.32 | 67.77 | 53.71 | a | 47.33 | a | 63.05 | |||||||
2004 | 47.00 | 44.79 | a | 59.13 | 59.62 | 67.53 | 74.88 | a | 78.50 | 76.82 | 74.26 | e | 62.71 | c | 49.95 | a | 45.73 | g | 63.20 | a | ||||||
2005 | 48.95 | b | 50.13 | e | 53.08 | 59.07 | c | 69.17 | b | 76.96 | g | 82.20 | a | 77.07 | a | 74.87 | 64.70 | a | 55.48 | 47.41 | d | 62.01 | a | |||
2006 | 46.90 | 50.39 | a | 51.60 | a | 61.69 | c | 69.31 | 79.72 | 80.81 | 76.47 | n | 69.91 | s | 62.50 | l | 54.50 | p | 45.38 | r | 62.92 | e | ||||
2007 | 42.43 | b | 48.23 | 55.46 | d | 61.22 | e | 67.83 | d | 76.67 | d | 80.10 | f | 78.15 | h | 73.74 | i | 64.27 | 57.88 | 44.95 | 57.66 | c | ||||
2008 | 45.10 | f | 48.65 | c | 53.80 | d | 58.31 | c | 64.16 | i | 77.65 | 77.69 | 77.08 | 72.95 | 63.86 | b | 55.72 | 48.32 | c | 63.40 | b | |||||
2009 | 48.55 | a | 49.27 | b | 55.08 | a | 58.95 | 70.69 | b | 73.69 | c | 82.94 | 79.66 | 74.58 | 62.21 | 56.22 | 44.65 | 63.04 | ||||||||
2010 | 46.87 | h | 47.88 | p | 52.82 | 59.37 | 64.95 | a | 76.74 | c | 81.68 | 80.02 | 76.67 | a | 65.74 | 52.08 | 52.09 | c | 66.22 | b | ||||||
2011 | 47.02 | 46.79 | 57.85 | a | 63.22 | 65.13 | a | 77.20 | 80.36 | b | 82.26 | 76.69 | a | 65.63 | 53.47 | 43.42 | a | 63.25 | ||||||||
2012 | 49.23 | a | 48.72 | 52.82 | 61.82 | 68.84 | b | 78.13 | 78.95 | 80.23 | 74.05 | 64.87 | a | 57.10 | a | 46.65 | 63.45 | |||||||||
2013 | 38.96 | r | 44.28 | a | 56.83 | a | 61.21 | a | 67.50 | d | 78.62 | b | 80.06 | 78.48 | 73.70 | 60.58 | 55.85 | 47.05 | a | 64.02 | a | |||||
2014 | 49.37 | a | 52.67 | a | 56.10 | j | 59.78 | 66.95 | 78.50 | 80.14 | c | 76.55 | 74.45 | a | 66.10 | a | 53.65 | c | 47.82 | 64.18 | a | |||||
2015 | 48.97 | 55.19 | a | 57.94 | 58.85 | 63.37 | 78.55 | 78.06 | 80.53 | a | 75.81 | i | 69.43 | p | 51.83 | d | 45.26 | 61.85 | b | |||||||
2016 | 46.35 | 52.76 | 56.11 | 58.98 | 64.45 | 78.65 | 81.69 | 75.94 | 72.00 | 67.16 | 55.53 | 50.21 | 63.32 | |||||||||||||
2017 | 47.26 | 51.73 | 58.71 | 60.70 | 66.24 | 79.18 | 79.03 | 76.74 | 72.83 | 67.48 | 60.52 | 49.42 | 64.15 | |||||||||||||
2018 | 50.74 | 50.46 | 55.56 | 62.83 | 67.77 | 77.43 | 80.32 | 78.35 | 75.65 | 63.73 | 51.95 | 48.34 | l | 64.98 | a | |||||||||||
2019 | 47.66 | 46.18 | 53.92 | g | 60.30 | 62.18 | 74.40 | 81.10 | 80.05 | 74.55 | 62.55 | 56.45 | 47.82 | a | 63.02 | a | ||||||||||
2020 | 48.45 | 49.55 | 53.73 | 59.58 | 70.24 | 75.85 | 82.42 | 81.90 | 75.32 | 66.13 | 57.45 | 45.71 | 63.86 | |||||||||||||
2021 | 46.52 | 49.05 | 51.03 | 61.66 | a | 67.15 | 79.68 | 77.97 | 77.16 | 73.47 | 61.74 | 56.90 | 49.19 | 62.63 | ||||||||||||
2022 | 47.34 | 45.68 | 52.13 | 61.63 | 66.95 | 77.05 | 78.44 | 77.11 | 74.65 | 62.45 | 49.02 | 45.89 | 61.53 | |||||||||||||
2023 | 43.66 | 42.61 | a | 48.43 | a | 53.90 | 61.87 | 72.57 | o | 80.60 | g | 81.48 | b | 76.18 | 66.74 | 56.68 | 49.15 | a | 58.07 | b | ||||||
2024 | 46.40 | 50.45 | 51.09 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.31 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.07 | 48.30 | 52.69 | 58.77 | 65.82 | 75.48 | 79.17 | 77.49 | 73.17 | 63.39 | 52.95 | 46.45 | 61.58 | |||||||||||||
S.D. | 2.35 | 3.11 | 3.15 | 2.67 | 2.70 | 2.76 | 1.58 | 2.10 | 1.99 | 2.21 | 2.82 | 2.24 | 1.27 | |||||||||||||
SKEW | -0.14 | -0.29 | -0.08 | -0.11 | -0.10 | -0.41 | 0.31 | -0.17 | -0.22 | -0.03 | 0.06 | -0.23 | -0.11 | |||||||||||||
MAX | 50.75 | 55.19 | 59.21 | 65.12 | 71.16 | 81.48 | 82.94 | 82.26 | 76.71 | 67.77 | 60.52 | 52.09 | 64.15 | |||||||||||||
MIN | 40.31 | 40.22 | 46.00 | 51.83 | 59.61 | 67.85 | 76.35 | 71.16 | 69.23 | 58.37 | 47.37 | 40.08 | 58.26 | |||||||||||||
YRS | 64 | 67 | 67 | 70 | 68 | 68 | 67 | 65 | 67 | 69 | 66 | 63 | 44 |