YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.00 | 41.00 | k | |
1958 | 34.74 | 43.07 | 39.94 | 51.17 | 71.35 | 80.80 | 83.22 | d | 86.03 | 77.77 | 66.58 | 48.97 | 42.10 | 60.48 | ||||||||||||
1959 | 36.90 | 36.36 | 42.61 | 55.73 | 62.90 | a | 79.63 | 85.06 | 80.48 | 69.27 | 57.97 | 46.67 | 40.39 | 57.83 | ||||||||||||
1960 | 31.00 | 29.07 | 47.10 | 59.93 | 66.87 | 80.34 | a | 86.35 | 85.23 | 78.00 | 61.68 | 45.29 | b | 34.77 | 58.80 | |||||||||||
1961 | 38.47 | a | 42.00 | 45.13 | 55.10 | 69.13 | 82.97 | 86.19 | 82.90 | 67.34 | a | 58.39 | 40.86 | a | 34.13 | a | 58.55 | |||||||||
1962 | 28.74 | 39.29 | 40.23 | 61.53 | 67.39 | 78.83 | a | 85.65 | 84.77 | a | 77.17 | 65.40 | a | 52.69 | a | 39.74 | 60.12 | |||||||||
1963 | 30.61 | c | 46.46 | 46.57 | c | 53.75 | b | 72.61 | 77.41 | a | 89.10 | 82.93 | a | 78.97 | 69.42 | 49.30 | 37.10 | a | 61.19 | |||||||
1964 | 32.30 | d | 33.93 | b | 38.87 | 52.57 | 66.42 | 71.97 | 89.03 | 83.23 | 75.87 | 67.45 | 42.73 | 33.83 | a | 57.35 | ||||||||||
1965 | 36.87 | 39.46 | 40.48 | 55.93 | 63.70 | a | ----- | z | 81.94 | 80.90 | 64.93 | 68.33 | a | 50.28 | a | 37.77 | a | 56.42 | a | |||||||
1966 | 33.97 | 35.36 | 50.81 | 58.90 | 74.19 | 77.23 | 88.19 | 84.23 | 76.93 | 59.55 | 49.77 | 32.94 | 60.17 | |||||||||||||
1967 | 37.32 | 42.39 | 50.00 | 55.03 | 63.26 | 70.43 | 84.87 | 84.77 | 75.53 | 65.10 | 50.17 | 29.61 | 59.04 | |||||||||||||
1968 | 33.03 | 38.97 | 49.52 | 50.27 | 63.94 | 78.00 | 85.26 | 76.45 | 72.97 | 62.97 | 43.50 | 34.61 | 57.46 | |||||||||||||
1969 | 40.58 | 36.25 | 39.29 | 58.60 | 74.81 | 71.43 | 87.84 | 87.37 | a | 77.53 | 50.47 | a | 46.67 | 38.29 | 59.09 | |||||||||||
1970 | 36.80 | a | 46.15 | b | 40.48 | 49.03 | 67.03 | 73.77 | 84.58 | 86.00 | 69.86 | a | 54.10 | a | 44.77 | 34.07 | a | 57.22 | ||||||||
1971 | 35.97 | 37.50 | 43.74 | 54.30 | 62.26 | 76.90 | 84.68 | 86.45 | 67.30 | 54.87 | 36.60 | 29.52 | b | 55.84 | ||||||||||||
1972 | 33.55 | 39.97 | 54.03 | 56.43 | 68.23 | 76.50 | 84.32 | 83.26 | 72.17 | 57.74 | 40.53 | 30.35 | 58.09 | |||||||||||||
1973 | 26.87 | 34.86 | 40.74 | 49.07 | 66.90 | 78.20 | 82.10 | 83.58 | 71.47 | 63.26 | 42.70 | 35.97 | 56.31 | |||||||||||||
1974 | 30.13 | 37.61 | 50.32 | 55.17 | 70.74 | 81.70 | 84.87 | 83.33 | a | 76.23 | 62.45 | 46.27 | 34.58 | 59.45 | ||||||||||||
1975 | 35.03 | 39.39 | 44.29 | 48.10 | 62.42 | 71.57 | 84.26 | 82.03 | 74.60 | 63.25 | c | 43.53 | 36.81 | 57.11 | ||||||||||||
1976 | 36.94 | 43.21 | 44.71 | 56.43 | 69.35 | 76.37 | 86.74 | 82.26 | 74.53 | 61.90 | 51.20 | 40.39 | 60.34 | |||||||||||||
1977 | 37.39 | 45.57 | 43.74 | 61.17 | 66.23 | 85.40 | 84.84 | 81.61 | 75.10 | 64.13 | 47.70 | 40.19 | 61.09 | |||||||||||||
1978 | 36.35 | 40.61 | 49.90 | 57.00 | 63.90 | 78.03 | 87.81 | 81.58 | 73.70 | 65.90 | 42.53 | 27.87 | 58.77 | |||||||||||||
1979 | 22.94 | 36.71 | 45.55 | 56.47 | 65.90 | 79.70 | 87.19 | 81.35 | 80.63 | 64.32 | 37.40 | 37.32 | 57.96 | |||||||||||||
1980 | 32.68 | 40.34 | 42.26 | 56.33 | 63.79 | b | 79.80 | 86.40 | a | 81.71 | 75.37 | 62.90 | 48.03 | 46.58 | 59.68 | |||||||||||
1981 | 42.74 | 45.54 | 48.94 | 63.50 | 64.35 | 80.07 | 85.77 | 85.94 | 78.03 | 58.10 | 49.20 | 40.61 | 61.90 | |||||||||||||
1982 | 36.16 | 37.22 | a | 46.06 | 53.67 | 66.58 | 75.63 | 84.80 | a | 85.03 | b | 70.14 | a | 56.71 | 41.00 | a | 34.03 | 57.25 | ||||||||
1983 | 39.26 | 40.82 | 44.77 | 48.20 | 61.48 | 72.75 | b | 82.83 | b | 84.35 | 75.80 | 62.45 | 42.63 | 27.97 | 56.94 | |||||||||||
1984 | 29.77 | a | 36.03 | 42.35 | 51.67 | 70.11 | c | 74.17 | a | 85.77 | a | 82.40 | a | 74.36 | b | 52.58 | 45.77 | 33.73 | a | 56.56 | ||||||
1985 | 30.61 | 34.71 | 44.58 | 61.21 | b | 70.03 | a | 80.17 | a | 82.81 | 85.28 | b | 68.46 | d | 60.83 | a | 41.17 | a | 38.47 | a | 58.20 | |||||
1986 | 41.03 | a | 43.64 | 55.65 | 56.07 | b | 67.34 | b | 81.78 | c | 81.10 | a | 83.24 | b | 68.28 | e | 58.57 | c | 46.48 | a | 37.26 | 60.04 | ||||
1987 | 35.50 | a | 41.70 | a | 45.87 | a | 64.75 | b | 68.90 | b | 82.37 | 83.97 | 81.73 | a | 77.93 | 67.07 | d | 45.17 | 36.68 | 60.97 | ||||||
1988 | 33.83 | a | 44.11 | a | 48.17 | a | 62.86 | b | 71.21 | c | 84.97 | 89.50 | a | 85.32 | 75.80 | 70.52 | 46.07 | a | 34.74 | 62.26 | ||||||
1989 | 36.10 | b | 32.00 | 54.10 | 65.93 | b | 71.17 | b | 77.14 | b | 90.19 | 81.83 | g | 73.74 | g | 60.04 | d | 50.82 | b | 38.00 | d | 57.55 | b | |||
1990 | 39.86 | c | 38.75 | 48.73 | a | 62.50 | 65.45 | 80.14 | a | 84.93 | b | 83.23 | 79.30 | c | 63.59 | d | 46.97 | a | 31.42 | 60.41 | ||||||
1991 | 33.57 | c | 44.50 | b | 47.43 | c | 52.78 | g | 65.80 | f | 77.48 | e | 84.39 | c | 81.31 | b | 73.58 | f | 62.12 | g | 41.30 | g | 31.44 | d | 57.16 | e |
1992 | 36.16 | f | 43.17 | f | 52.79 | c | 65.36 | e | 71.12 | e | 76.90 | i | 81.92 | e | 82.89 | d | 75.80 | e | 66.91 | h | 39.11 | c | 34.12 | f | 67.00 | e |
1993 | 32.00 | h | 29.62 | d | 49.33 | d | 53.88 | d | 69.04 | e | 74.13 | g | 80.56 | f | 81.14 | j | 73.57 | g | 59.25 | g | 41.92 | e | 37.52 | f | 48.76 | g |
1994 | 40.27 | i | 40.48 | e | 53.67 | g | 59.46 | b | 73.65 | e | 85.04 | c | 87.59 | d | 87.79 | b | 78.04 | f | 59.43 | c | 40.46 | b | 38.97 | b | 63.65 | c |
1995 | 36.23 | 46.93 | a | 48.65 | 53.83 | 58.53 | a | 74.53 | 84.90 | ----- | z | 74.28 | a | 61.65 | e | 54.08 | f | 42.42 | e | 58.20 | b | |||||
1996 | 37.71 | g | 42.73 | g | 47.17 | b | 58.75 | f | 65.75 | g | 81.08 | e | 88.90 | b | 85.70 | d | 70.96 | f | 58.77 | i | 48.71 | f | 39.68 | c | 68.51 | g |
1997 | 37.08 | e | 36.00 | d | 50.45 | b | 53.23 | h | 70.07 | c | 77.56 | c | 83.73 | e | 80.96 | d | 72.19 | c | 60.00 | d | 45.17 | f | 34.64 | f | 63.11 | c |
1998 | 42.21 | c | 39.08 | b | 46.00 | g | 53.97 | 67.63 | d | 71.00 | c | 87.33 | d | 85.93 | b | 79.76 | a | 60.43 | c | 47.29 | i | 40.86 | i | 65.26 | c | |
1999 | 43.46 | g | 45.57 | 55.69 | b | 54.56 | c | 66.25 | c | 78.90 | 87.68 | i | 85.50 | e | 72.75 | b | 70.79 | l | 57.48 | g | 39.78 | d | 62.37 | d | ||
2000 | 43.70 | d | 46.41 | b | 49.67 | d | 62.44 | c | 74.11 | c | 81.45 | a | 88.13 | a | 87.43 | a | 74.54 | b | 62.32 | f | 36.65 | d | 38.63 | d | 62.11 | a |
2001 | 34.89 | d | 38.96 | c | 49.57 | a | 59.07 | 73.24 | b | 80.97 | a | 90.10 | b | 87.53 | a | 79.40 | 64.00 | e | 50.43 | b | 35.93 | b | 62.01 | |||
2002 | 34.29 | c | 41.31 | b | 46.38 | b | 63.04 | d | 71.79 | c | 83.93 | c | 91.43 | a | 85.33 | a | 72.75 | b | 57.03 | b | 44.00 | b | 39.48 | b | 60.90 | |
2003 | 44.78 | d | 38.04 | c | 48.96 | c | 58.80 | e | 68.76 | b | 75.21 | a | 92.33 | a | 86.77 | e | 76.88 | e | 71.63 | d | 39.04 | c | 38.60 | a | 61.65 | |
2004 | 33.59 | b | 35.78 | b | 56.81 | 60.48 | a | 70.72 | b | 77.74 | c | 85.23 | a | 82.29 | 71.30 | c | 57.93 | b | 43.61 | b | 41.23 | 59.73 | ||||
2005 | 41.68 | 39.86 | 47.74 | 56.70 | 67.58 | 75.13 | 90.35 | 82.93 | a | 74.87 | 61.61 | 46.30 | 36.48 | 60.10 | ||||||||||||
2006 | 39.71 | 40.25 | 45.90 | 59.44 | n | 73.21 | b | 85.27 | 90.03 | 83.61 | 71.40 | 57.68 | 48.77 | 35.17 | a | 61.00 | a | |||||||||
2007 | 28.86 | b | 41.32 | 54.10 | 60.37 | 68.74 | 83.70 | 91.74 | 86.77 | 75.03 | a | 61.87 | 54.63 | 32.77 | a | 61.66 | ||||||||||
2008 | 30.93 | a | 38.92 | c | 42.90 | a | 53.10 | 64.67 | a | 77.34 | a | 89.50 | a | 85.23 | 74.63 | 62.65 | 51.03 | 37.06 | 59.00 | |||||||
2009 | 38.68 | 42.82 | 49.87 | 55.10 | 68.06 | 72.07 | 86.39 | 82.55 | 77.93 | 54.70 | a | 49.63 | 29.87 | 58.97 | ||||||||||||
2010 | 36.84 | 37.29 | 49.35 | 55.03 | 61.39 | 79.70 | 85.48 | 83.74 | 80.13 | 63.58 | 43.87 | 37.81 | 59.52 | |||||||||||||
2011 | 35.71 | 39.32 | 46.52 | 52.23 | 59.52 | 76.20 | 82.35 | 85.13 | 77.57 | 62.42 | 45.23 | 33.48 | 57.97 | |||||||||||||
2012 | 41.84 | 38.03 | 55.42 | 62.60 | 72.90 | 86.80 | 87.97 | 87.45 | 77.70 | 64.72 | b | 52.93 | 34.87 | 63.60 | ||||||||||||
2013 | 31.03 | 37.50 | 48.74 | 53.80 | 68.23 | 85.57 | 89.16 | 85.32 | 74.03 | 57.55 | 45.23 | 33.23 | 59.12 | |||||||||||||
2014 | 40.68 | 42.96 | 53.26 | 57.47 | 69.10 | 78.07 | 88.74 | 80.84 | 75.57 | 65.35 | 44.35 | g | 47.40 | u | 65.20 | b | ||||||||||
2015 | 43.00 | g | 46.54 | 57.61 | 58.43 | g | 59.87 | h | 87.65 | g | 82.65 | 84.48 | 78.90 | 66.94 | 39.93 | 32.13 | 61.15 | d | ||||||||
2016 | 34.73 | a | 42.03 | 50.48 | 56.17 | 61.40 | k | 81.64 | b | 87.55 | 85.74 | 74.87 | 63.48 | 52.93 | a | 34.65 | 60.39 | a | ||||||||
2017 | 29.32 | 43.64 | 54.48 | 54.80 | 66.84 | 82.17 | 87.03 | 82.06 | 72.60 | 58.42 | 49.33 | 41.71 | 60.20 | |||||||||||||
2018 | 40.39 | 39.11 | 48.10 | 59.03 | 71.48 | 84.63 | 90.43 | h | 84.55 | 81.20 | 56.97 | 44.00 | ----- | z | 60.95 | b | ||||||||||
2019 | 32.87 | 33.57 | 41.35 | 60.44 | e | 64.32 | 79.59 | c | 89.16 | 88.39 | 77.40 | 57.00 | a | 49.57 | 35.97 | 59.14 | ||||||||||
2020 | 36.81 | 38.79 | 49.47 | a | 57.83 | 70.35 | 79.90 | 90.58 | 90.16 | 80.90 | a | 67.42 | 48.57 | 37.06 | 62.32 | |||||||||||
2021 | 38.40 | a | 38.29 | 46.87 | 58.20 | 69.30 | a | 86.93 | 91.84 | 85.71 | 80.75 | b | 61.07 | a | 54.97 | a | 42.71 | 62.92 | ||||||||
2022 | 41.29 | 40.96 | 51.41 | i | 60.53 | 71.14 | b | 78.97 | 89.26 | 89.42 | 79.35 | d | 62.06 | 40.90 | 32.03 | b | 62.36 | a | ||||||||
2023 | 29.94 | 34.71 | 35.48 | 48.27 | 69.90 | 74.50 | 87.61 | 82.65 | 75.37 | 63.03 | 45.67 | 39.61 | 57.23 | |||||||||||||
2024 | 36.81 | 42.59 | 44.71 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.70 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.59 | 39.70 | 47.46 | 56.80 | 67.93 | 78.86 | 86.60 | 84.21 | 75.10 | 61.65 | 45.80 | 36.32 | 59.43 | |||||||||||||
S.D. | 4.44 | 4.04 | 4.87 | 4.43 | 3.78 | 4.14 | 2.79 | 2.44 | 3.72 | 4.37 | 4.49 | 3.94 | 1.86 | |||||||||||||
SKEW | -0.25 | -0.27 | -0.05 | -0.02 | -0.33 | -0.07 | 0.09 | -0.12 | -0.58 | -0.11 | -0.06 | -0.06 | 0.16 | |||||||||||||
MAX | 44.78 | 46.93 | 57.61 | 65.93 | 74.81 | 86.93 | 92.33 | 90.16 | 81.20 | 71.63 | 54.97 | 46.58 | 63.60 | |||||||||||||
MIN | 22.94 | 29.07 | 35.48 | 48.10 | 58.53 | 70.43 | 81.10 | 76.45 | 64.93 | 50.47 | 36.60 | 27.87 | 55.84 | |||||||||||||
YRS | 61 | 65 | 63 | 61 | 62 | 62 | 63 | 63 | 61 | 60 | 59 | 61 | 48 |