YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1953 | ----- | z | ----- | z | ----- | z | 69.07 | 73.10 | 89.81 | c | 86.15 | e | 82.86 | i | 83.38 | f | 70.97 | 55.59 | a | 40.67 | a | 69.34 | e | |||
1954 | 47.36 | c | 60.17 | e | 57.65 | 73.87 | 77.23 | 87.76 | a | 91.13 | 87.32 | 83.87 | 75.03 | a | 61.80 | 49.61 | 71.07 | |||||||||
1955 | 42.67 | a | 46.00 | 60.58 | 67.77 | 73.97 | 84.70 | 89.70 | a | 86.97 | 84.53 | 74.06 | 57.93 | 48.84 | 68.14 | |||||||||||
1956 | 49.61 | 45.00 | 61.65 | 67.73 | 79.10 | 88.73 | 88.32 | 85.61 | 84.47 | 71.33 | a | 54.53 | 49.03 | b | 68.76 | |||||||||||
1957 | 45.29 | 55.29 | 56.94 | 65.59 | a | 67.76 | b | 84.64 | b | 83.89 | c | 79.87 | 79.23 | 63.73 | a | 45.79 | a | 44.73 | a | 64.40 | ||||||
1958 | 41.68 | 50.19 | b | 50.10 | 62.62 | a | 76.70 | a | 86.86 | b | 88.94 | 86.44 | d | 78.47 | 70.84 | 57.97 | 55.23 | 67.17 | ||||||||
1959 | 49.23 | 50.32 | 59.63 | a | 68.30 | 75.71 | 87.83 | 89.97 | a | 85.19 | 82.17 | 70.16 | 57.53 | 49.13 | 68.76 | |||||||||||
1960 | 38.52 | 43.90 | 60.52 | 71.70 | 77.16 | 87.17 | 89.45 | 90.26 | 82.47 | 68.80 | a | 58.07 | 41.87 | 67.49 | ||||||||||||
1961 | 45.71 | 52.79 | 58.58 | 68.37 | 79.35 | 88.50 | 89.74 | 86.13 | 77.47 | 71.97 | 54.50 | 43.55 | 68.05 | |||||||||||||
1962 | 41.58 | 53.14 | 54.29 | 72.50 | 78.48 | 85.27 | 87.35 | 89.61 | 79.40 | 72.13 | 59.23 | 51.58 | 68.71 | |||||||||||||
1963 | 43.03 | 52.39 | 58.61 | 70.13 | 80.65 | 85.83 | 91.32 | 85.35 | 82.73 | 74.48 | 58.77 | 49.97 | 69.44 | |||||||||||||
1964 | 45.03 | 42.62 | 54.68 | 64.93 | 76.42 | 85.50 | 90.87 | 86.84 | 80.40 | 73.94 | 57.31 | a | 44.23 | 66.90 | ||||||||||||
1965 | 45.03 | 49.04 | 54.90 | 67.24 | a | 73.97 | 82.03 | 89.00 | 86.65 | 76.41 | a | 72.81 | 59.27 | 47.06 | 66.95 | |||||||||||
1966 | 42.58 | 46.43 | 62.77 | 69.90 | 79.00 | 83.83 | a | 91.26 | 83.48 | b | 73.48 | a | 67.74 | 60.67 | 47.58 | 67.39 | ||||||||||
1967 | 47.74 | 54.46 | 66.19 | 70.11 | b | 76.55 | 82.97 | 89.39 | 83.48 | 78.73 | 73.48 | 59.93 | 39.94 | 68.58 | ||||||||||||
1968 | 45.10 | 52.10 | 58.23 | 63.67 | 75.93 | a | 89.07 | 88.45 | 81.90 | 80.53 | 72.97 | 54.03 | a | 43.39 | 67.11 | |||||||||||
1969 | 50.00 | 50.68 | 54.13 | 69.70 | 78.00 | 83.17 | a | 90.10 | 89.32 | 79.77 | 64.87 | 55.17 | 47.42 | 67.69 | ||||||||||||
1970 | 45.29 | 56.04 | 54.43 | a | 65.47 | 79.61 | 84.37 | 89.65 | 89.00 | 80.64 | b | 64.92 | e | 57.41 | a | 50.61 | 68.12 | |||||||||
1971 | 44.74 | 51.93 | 62.13 | 67.10 | 76.90 | ----- | z | 88.77 | 86.48 | 79.40 | 67.16 | 54.63 | 39.13 | a | 65.31 | a | ||||||||||
1972 | 45.45 | 56.03 | 68.13 | 72.60 | 78.00 | 86.30 | 89.03 | 85.48 | 79.63 | 69.13 | 49.27 | 44.65 | 68.64 | |||||||||||||
1973 | 41.94 | 48.39 | 53.61 | 61.37 | 74.13 | 84.97 | 89.45 | 89.26 | 80.87 | 73.26 | 59.34 | a | 47.71 | 67.02 | ||||||||||||
1974 | 41.00 | a | 49.43 | 64.58 | 68.93 | 83.55 | 90.30 | 88.16 | 83.73 | a | 78.03 | 69.52 | 56.33 | 42.52 | 68.01 | |||||||||||
1975 | 40.97 | 46.54 | 57.35 | 63.73 | 74.32 | 85.00 | 88.35 | 88.61 | 79.77 | 73.32 | 57.90 | a | 47.94 | 66.98 | ||||||||||||
1976 | 47.84 | 57.21 | 60.32 | 68.17 | 76.23 | 86.47 | 90.06 | 86.77 | a | 78.57 | 67.45 | 58.47 | 41.90 | 68.29 | ||||||||||||
1977 | 40.00 | 51.93 | 57.13 | 69.23 | 77.42 | 89.07 | a | 89.26 | 88.84 | 83.79 | a | 75.58 | 60.53 | 52.48 | 69.61 | |||||||||||
1978 | 47.81 | 51.46 | 61.63 | a | 71.60 | 75.29 | 87.79 | a | 91.76 | b | 87.70 | a | 83.17 | 73.61 | 55.63 | 43.55 | 69.25 | |||||||||
1979 | 38.90 | 48.36 | 58.39 | 67.17 | a | 73.13 | 84.93 | b | 90.35 | 85.68 | 83.77 | 75.13 | 49.83 | a | 51.48 | 67.26 | ||||||||||
1980 | 48.53 | a | 54.14 | 55.35 | 66.07 | 73.48 | 89.79 | a | 93.83 | a | ----- | z | 83.52 | a | 69.57 | a | 59.31 | d | 56.65 | 68.20 | a | |||||
1981 | 51.43 | a | 55.57 | 54.00 | 72.83 | 73.87 | 88.65 | g | 90.32 | i | 86.05 | i | 79.50 | h | 69.00 | f | 62.27 | d | 55.56 | d | 60.79 | e | ||||
1982 | 47.77 | e | 50.00 | c | 58.71 | g | 68.17 | a | 74.15 | e | 84.50 | b | 90.42 | g | 86.54 | e | 79.53 | k | 69.25 | g | 54.33 | i | 43.85 | r | 68.52 | f |
1983 | 45.60 | k | 51.26 | i | 56.76 | j | 59.48 | i | 75.56 | f | 82.82 | h | 89.40 | k | 88.26 | 82.56 | l | 69.71 | g | 55.30 | 45.33 | g | 71.78 | j | ||
1984 | 42.27 | a | 52.03 | 57.48 | d | 65.24 | a | 80.64 | c | 83.33 | l | 89.48 | d | 86.68 | 81.86 | a | 61.42 | 56.80 | 41.13 | 65.00 | a | |||||
1985 | 41.52 | 48.25 | 59.39 | 69.40 | 76.52 | 86.37 | 89.00 | a | 89.00 | 78.23 | 68.52 | 55.63 | 49.32 | 67.60 | ||||||||||||
1986 | 56.61 | 54.96 | 64.87 | 67.80 | 77.16 | 83.53 | 86.87 | 87.97 | a | 77.43 | 67.13 | 55.41 | a | 47.23 | 68.92 | |||||||||||
1987 | 43.23 | a | 48.89 | 57.39 | 71.07 | 74.74 | 88.60 | 91.81 | 85.97 | 81.61 | g | 74.77 | 56.07 | 43.55 | b | 66.92 | a | |||||||||
1988 | 39.17 | b | 53.21 | 60.52 | 68.93 | 76.37 | a | 86.53 | 90.71 | 85.81 | 79.50 | 74.32 | 54.57 | b | 46.29 | 67.99 | ||||||||||
1989 | 44.71 | 50.68 | 66.29 | 75.13 | 81.26 | 87.43 | 90.32 | 88.74 | 82.80 | 70.45 | 60.57 | 47.13 | 70.46 | |||||||||||||
1990 | 44.68 | 50.46 | 60.39 | 68.86 | a | 76.19 | 90.20 | 85.26 | 84.29 | 80.87 | 70.55 | 57.20 | 41.91 | h | 69.90 | a | ||||||||||
1991 | 42.26 | 54.43 | 54.53 | a | 67.40 | 78.13 | 85.00 | 87.55 | 84.71 | 78.67 | 75.29 | 51.70 | c | 42.96 | c | 66.89 | ||||||||||
1992 | 41.39 | 50.38 | 58.58 | 71.13 | 74.03 | 82.87 | 86.71 | 80.13 | a | 80.93 | c | 73.18 | c | 50.00 | c | 38.36 | c | 65.64 | ||||||||
1993 | 43.39 | 47.96 | 58.66 | b | 66.24 | a | ----- | z | 84.42 | d | 89.76 | b | 82.91 | i | 78.82 | b | 68.65 | 52.03 | 49.67 | a | 63.96 | b | ||||
1994 | 53.00 | g | 51.41 | f | 62.81 | d | 64.62 | i | 68.76 | n | 90.89 | c | 89.61 | h | 87.85 | e | 80.81 | c | 68.52 | d | 55.00 | n | 50.25 | s | 78.18 | g |
1995 | 47.38 | r | 60.10 | h | 60.44 | f | 64.05 | i | 72.76 | b | 83.68 | k | 91.38 | o | 89.50 | m | 81.43 | p | 74.83 | h | 63.89 | k | 57.67 | m | 72.76 | k |
1996 | 47.89 | m | 57.57 | f | 60.79 | b | 71.48 | a | 85.52 | 88.38 | a | 88.42 | e | 88.64 | f | 75.68 | b | 68.25 | c | 60.44 | e | 45.80 | p | 74.87 | d | |
1997 | 40.80 | k | 51.65 | b | 65.80 | a | 64.64 | b | 75.47 | a | 84.07 | b | 87.74 | d | 86.12 | e | 82.93 | 72.93 | b | 54.97 | a | 46.16 | l | 72.63 | b | |
1998 | 50.72 | f | 49.79 | 57.87 | 65.50 | 80.71 | 86.90 | 89.13 | 88.52 | 86.80 | e | 69.45 | b | 58.00 | a | 54.62 | j | 73.27 | b | |||||||
1999 | 54.63 | a | 58.50 | b | 64.61 | 67.12 | e | 73.93 | c | 84.90 | 89.00 | a | 85.57 | a | 80.80 | 76.97 | b | 67.60 | 47.59 | i | 73.06 | a | ||||
2000 | 53.21 | g | 61.29 | h | 61.91 | i | 76.78 | l | 85.43 | j | 88.95 | h | 93.60 | k | 91.65 | h | 86.90 | j | 69.45 | i | 51.85 | j | 50.33 | p | ----- | z |
2001 | 46.30 | k | 51.79 | d | 58.21 | b | 67.93 | a | 78.53 | a | 87.65 | d | 87.58 | e | 84.23 | e | 83.62 | a | 71.29 | 58.45 | a | 45.59 | d | 70.44 | a | |
2002 | 46.57 | a | 47.71 | 61.50 | a | 73.50 | 80.00 | 90.33 | i | 89.71 | 89.00 | a | 79.18 | b | 66.48 | b | 55.74 | c | 43.97 | 66.67 | a | |||||
2003 | 54.97 | 49.07 | 58.68 | 69.10 | 79.10 | a | 84.97 | 93.63 | a | 87.16 | 81.30 | 73.03 | 56.17 | a | 48.07 | a | 69.60 | |||||||||
2004 | 47.83 | a | 46.62 | 66.32 | 64.18 | b | 79.93 | b | 84.11 | b | 87.48 | b | 84.10 | 79.37 | 65.10 | 52.83 | 46.06 | 66.99 | ||||||||
2005 | 50.63 | a | 49.57 | 54.84 | 67.27 | 77.27 | a | 85.50 | 92.42 | 84.06 | 81.66 | a | 67.69 | b | 58.87 | 45.33 | j | 69.98 | a | |||||||
2006 | 51.19 | 56.39 | 61.03 | a | 72.63 | 80.58 | 88.70 | 87.53 | a | 82.48 | d | 75.40 | 66.77 | 60.38 | a | 44.24 | b | 68.95 | ||||||||
2007 | 40.00 | 51.00 | 63.45 | 68.41 | c | 74.42 | 86.14 | a | 90.48 | 89.45 | b | 81.26 | g | 71.50 | a | 58.85 | c | 43.21 | b | 66.99 | a | |||||
2008 | 40.45 | b | 50.39 | a | 59.54 | c | 68.10 | 76.69 | e | 86.72 | a | 86.90 | 85.86 | c | 78.79 | a | 67.94 | 56.43 | 44.60 | a | 66.87 | |||||
2009 | 46.84 | 55.11 | 59.71 | 65.80 | 77.29 | c | 81.00 | e | 88.25 | c | 87.47 | a | 77.36 | b | 64.53 | a | 58.23 | 37.84 | 66.62 | |||||||
2010 | 41.83 | b | 45.85 | a | 57.32 | 66.72 | a | 75.71 | 88.86 | a | 87.69 | e | 85.97 | a | 83.67 | c | 69.00 | 53.97 | 49.81 | 67.20 | ||||||
2011 | 45.90 | a | 48.79 | 64.26 | 68.31 | a | 72.65 | e | 88.67 | 89.89 | d | 88.55 | 78.25 | b | 66.65 | e | 54.08 | e | 40.93 | c | 67.24 | |||||
2012 | 48.97 | 49.54 | a | 64.97 | b | 71.61 | b | 79.76 | b | 90.83 | 89.65 | 87.94 | 80.25 | b | 71.23 | 59.48 | a | 43.00 | a | 69.77 | ||||||
2013 | 40.77 | a | 48.15 | a | 61.84 | 68.70 | 76.97 | 89.77 | 87.13 | 86.55 | 78.80 | 65.77 | 52.47 | 43.83 | a | 66.73 | ||||||||||
2014 | 49.27 | a | 55.07 | 61.90 | 66.70 | 76.19 | 88.80 | 87.35 | 84.06 | 81.40 | 70.48 | 54.63 | 44.84 | 68.39 | ||||||||||||
2015 | 46.20 | a | 51.96 | 62.81 | 67.90 | 70.55 | 86.77 | 84.58 | 86.23 | 83.27 | 70.43 | a | 54.30 | 43.68 | 67.39 | |||||||||||
2016 | 43.03 | 55.14 | 63.52 | b | 66.57 | 73.23 | 88.93 | 91.39 | 81.26 | 79.23 | 73.26 | 57.23 | 45.42 | 68.18 | ||||||||||||
2017 | 44.35 | 56.14 | 66.32 | 68.07 | 74.94 | 89.87 | 90.10 | 84.61 | 82.20 | 68.52 | 61.70 | 51.13 | 69.83 | |||||||||||||
2018 | 49.13 | 54.36 | 61.06 | 72.47 | 81.42 | 90.27 | 91.13 | 88.94 | 82.73 | 65.45 | 51.13 | 43.42 | 69.29 | |||||||||||||
2019 | 39.81 | 47.39 | 59.26 | 67.80 | 70.63 | a | 84.50 | 89.94 | 90.13 | 83.23 | 65.90 | 56.67 | 43.65 | 66.58 | ||||||||||||
2020 | 43.52 | 48.79 | 60.77 | 69.17 | a | 81.58 | 88.57 | 90.73 | a | 91.48 | 80.60 | 72.26 | 58.47 | ----- | z | 71.45 | a | |||||||||
2021 | 45.90 | b | 49.67 | a | 58.42 | 69.52 | a | 78.68 | 90.17 | f | 90.12 | g | 89.33 | s | 89.00 | q | 67.52 | 61.67 | 52.68 | 60.50 | d | |||||
2022 | 47.55 | 47.43 | 59.58 | 72.74 | c | 81.16 | 86.63 | 90.61 | 85.94 | 84.63 | 65.16 | 51.76 | a | 45.69 | e | 68.24 | ||||||||||
2023 | 44.03 | 49.07 | 54.48 | 67.10 | 77.68 | 83.87 | 95.72 | b | 90.59 | b | 81.83 | 72.27 | a | 57.53 | 47.45 | 68.47 | ||||||||||
2024 | 44.65 | 52.03 | 57.11 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.26 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.22 | 51.06 | 59.75 | 68.45 | 76.83 | 86.64 | 89.30 | 86.48 | 80.62 | 70.10 | 56.66 | 46.15 | 67.99 | |||||||||||||
S.D. | 4.01 | 3.59 | 3.80 | 2.82 | 3.17 | 2.39 | 2.07 | 2.48 | 2.57 | 3.45 | 3.58 | 4.20 | 1.25 | |||||||||||||
SKEW | 0.62 | 0.16 | 0.02 | 0.06 | -0.02 | -0.10 | 0.16 | -0.50 | -0.19 | -0.21 | -0.24 | 0.37 | -0.04 | |||||||||||||
MAX | 56.61 | 60.17 | 68.13 | 75.13 | 85.52 | 90.89 | 95.72 | 91.48 | 86.80 | 76.97 | 67.60 | 56.65 | 71.07 | |||||||||||||
MIN | 38.52 | 42.62 | 50.10 | 61.37 | 67.76 | 81.00 | 83.89 | 79.87 | 73.48 | 61.42 | 45.79 | 37.84 | 64.40 | |||||||||||||
YRS | 63 | 66 | 67 | 67 | 67 | 63 | 64 | 63 | 62 | 66 | 67 | 59 | 48 |