YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.22 | h | ----- | z |
1951 | 36.77 | 46.57 | 51.00 | 69.50 | 74.45 | 82.47 | 96.67 | a | 89.42 | 84.37 | 62.84 | 50.63 | 36.29 | 65.08 | ||||||||||||
1952 | 34.00 | 41.76 | 47.23 | ----- | z | 74.90 | 80.20 | 91.00 | g | 92.30 | a | 86.27 | 78.93 | a | 49.88 | d | 44.35 | h | 65.05 | c | ||||||
1953 | 52.93 | c | 53.15 | b | 60.52 | h | 65.93 | b | 68.37 | l | 73.82 | b | 94.03 | a | 89.52 | f | 85.44 | l | 72.26 | l | ----- | z | 43.25 | w | 67.97 | g |
1954 | 47.43 | a | 51.75 | d | 51.76 | n | 70.24 | a | 82.33 | d | 81.08 | f | 93.24 | b | 87.19 | 82.21 | a | 68.78 | d | 60.38 | d | 40.57 | c | 68.41 | b | |
1955 | 39.70 | a | 44.65 | b | 55.07 | c | 58.19 | d | 73.03 | b | 86.97 | a | 88.59 | i | 97.96 | c | 84.63 | c | 74.78 | h | 55.04 | d | 46.90 | a | 64.21 | b |
1956 | 45.38 | e | 44.00 | b | 60.46 | g | 65.96 | b | 69.33 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.69 | e | 49.26 | h |
1957 | 36.17 | a | 49.18 | 56.72 | b | ----- | z | ----- | z | ----- | z | ----- | z | 87.04 | d | 84.38 | f | 62.11 | v | 48.76 | a | 45.84 | l | 55.57 | g | |
1958 | ----- | z | ----- | z | ----- | z | 60.27 | d | 82.00 | e | 80.85 | j | 89.11 | d | 92.95 | i | 79.70 | c | 75.20 | a | 62.00 | o | 50.68 | f | 77.26 | g |
1959 | 44.14 | b | 45.93 | 55.32 | c | 68.41 | a | 67.26 | d | 83.66 | a | 93.84 | 86.84 | 81.53 | k | 67.77 | 56.83 | 39.10 | 64.46 | a | ||||||
1960 | 33.03 | a | 44.19 | b | 57.97 | 64.73 | d | 69.42 | 85.04 | b | 95.71 | 87.14 | c | 83.57 | b | ----- | z | 51.43 | b | 42.19 | d | 64.95 | a | |||
1961 | 44.43 | a | 52.37 | a | 57.22 | h | 62.79 | b | 73.11 | d | 88.21 | a | 93.32 | 93.86 | b | 73.41 | a | 66.55 | 52.14 | b | 42.41 | b | 67.51 | a | ||
1962 | ----- | z | 44.21 | d | 51.43 | c | ----- | z | 69.23 | a | 84.18 | b | 91.83 | a | 90.00 | c | 84.73 | 68.35 | 54.47 | 44.52 | 68.30 | b | ||||
1963 | 41.55 | 54.43 | 54.16 | 57.00 | 73.24 | b | 75.23 | 89.90 | 90.74 | 85.50 | 72.65 | 51.80 | 39.10 | a | 65.44 | |||||||||||
1964 | 40.52 | 46.17 | ----- | z | 60.40 | ----- | z | 76.14 | a | 93.94 | 88.19 | 77.73 | 73.55 | 50.13 | 43.48 | b | 65.03 | b | ||||||||
1965 | 40.74 | 51.81 | a | 56.07 | a | 65.30 | 69.40 | a | 79.41 | a | 90.16 | 86.90 | 73.03 | 74.97 | 55.03 | a | 42.74 | 65.46 | ||||||||
1966 | 43.48 | 44.86 | 58.57 | a | 67.00 | 79.57 | c | 80.50 | 93.57 | a | 93.20 | f | ----- | z | 68.44 | f | 54.03 | 40.13 | 62.41 | c | ||||||
1967 | 44.40 | a | 51.64 | c | 53.97 | 52.79 | b | 73.43 | a | 77.48 | a | 95.68 | 96.89 | c | ----- | z | 65.59 | b | 53.68 | b | 41.10 | a | 64.24 | a | ||
1968 | 42.19 | 54.34 | ----- | z | 61.36 | b | 71.42 | 84.03 | 96.68 | 84.97 | 80.53 | ----- | z | 48.79 | b | 42.29 | c | 66.66 | b | |||||||
1969 | 42.07 | b | 43.00 | 55.10 | b | 67.10 | a | 80.73 | a | 78.79 | a | 93.26 | 94.40 | a | 82.73 | 61.52 | 56.07 | 43.32 | c | 66.51 | ||||||
1970 | 44.52 | 54.59 | a | 54.70 | a | 56.97 | 73.68 | 84.73 | 95.77 | 97.87 | a | 76.68 | b | 63.68 | 51.83 | a | 39.16 | 66.18 | ||||||||
1971 | 45.23 | a | 49.15 | a | 50.03 | 60.68 | b | 72.26 | 78.15 | j | 92.24 | b | 96.32 | 75.72 | a | 63.10 | 51.11 | c | 39.13 | a | 63.18 | a | ||||
1972 | 39.79 | c | 46.46 | e | 59.84 | 60.53 | 78.16 | 84.77 | 92.81 | 92.55 | b | 77.70 | 67.13 | a | 49.21 | a | 38.75 | c | 65.64 | |||||||
1973 | 38.48 | 48.75 | 52.27 | a | 63.31 | a | 79.10 | a | ----- | z | 96.35 | 92.03 | a | 81.21 | a | 69.53 | a | ----- | z | 46.10 | a | 66.71 | b | |||
1974 | 39.56 | f | 50.96 | 54.19 | 60.87 | 71.81 | 90.93 | a | 92.29 | 90.26 | 85.50 | 69.48 | 53.33 | 41.71 | 69.21 | a | ||||||||||
1975 | 40.16 | 46.76 | c | 51.11 | c | 53.83 | 70.61 | 79.79 | a | 94.16 | 87.17 | a | 83.74 | g | 63.90 | 52.04 | b | 46.15 | d | 62.33 | a | |||||
1976 | 43.50 | a | 48.10 | 50.13 | 62.52 | c | 77.97 | b | 80.03 | a | 92.26 | 81.74 | 80.77 | 69.73 | a | 60.97 | 45.16 | 66.07 | ||||||||
1977 | 31.26 | 50.85 | a | 52.74 | 71.47 | 65.67 | a | 88.72 | a | 90.61 | 88.97 | 79.57 | 69.77 | a | 53.23 | 46.06 | 65.74 | |||||||||
1978 | 42.00 | a | 48.46 | b | 61.75 | c | 60.50 | ----- | z | 80.93 | a | 90.55 | 88.45 | 76.07 | 73.87 | a | 50.80 | 39.62 | b | 64.82 | a | |||||
1979 | 31.19 | 44.18 | 56.55 | 63.10 | a | 73.72 | b | 83.52 | a | 92.62 | b | 87.60 | a | 86.33 | 68.57 | a | 47.00 | 45.29 | 64.97 | |||||||
1980 | 40.16 | 47.38 | 51.65 | 66.67 | 68.31 | b | 77.90 | 91.58 | 87.23 | 80.21 | a | 68.57 | a | 52.90 | a | 44.55 | 64.76 | |||||||||
1981 | 38.96 | c | 48.96 | 56.74 | d | 64.53 | 68.00 | a | 81.97 | a | 91.35 | 94.52 | 82.43 | 63.35 | 53.47 | 45.17 | a | 65.79 | ||||||||
1982 | 38.13 | a | 44.59 | a | 52.97 | b | 59.57 | 71.30 | a | 80.81 | d | 86.13 | a | 91.29 | 76.48 | a | 63.38 | b | 42.57 | 40.33 | a | 62.30 | ||||
1983 | 43.13 | a | 49.93 | 53.77 | a | 59.13 | 71.84 | 79.07 | 87.25 | c | 89.67 | a | 80.41 | a | 69.72 | b | 51.11 | c | 36.48 | 64.29 | ||||||
1984 | 30.37 | a | 39.80 | i | 54.73 | e | 58.83 | 72.04 | c | 77.10 | a | 93.14 | c | 91.81 | 77.88 | e | 60.31 | b | 49.25 | b | 35.79 | b | 63.75 | a | ||
1985 | 36.65 | 40.11 | a | 49.23 | 68.36 | b | 74.97 | a | 85.73 | 96.61 | 89.59 | b | ----- | z | 65.18 | c | 41.64 | b | 26.86 | c | 61.36 | a | ||||
1986 | 39.07 | a | 51.28 | c | 60.28 | b | 62.82 | b | 73.71 | 89.77 | 88.62 | b | 95.25 | c | 71.77 | 68.87 | a | 53.73 | 39.35 | 66.21 | ||||||
1987 | 38.83 | b | 48.88 | d | 51.52 | j | 74.47 | 76.03 | a | 85.63 | 87.37 | a | 90.35 | 86.93 | a | 75.74 | 51.04 | b | 41.82 | c | 68.83 | a | ||||
1988 | 37.32 | 53.52 | b | 58.61 | 67.84 | e | 75.46 | c | 87.32 | b | 96.48 | 92.81 | 81.87 | 78.94 | 49.52 | a | 36.17 | b | 67.99 | |||||||
1989 | 38.22 | d | 38.04 | d | 56.67 | d | 74.52 | g | 71.12 | g | 85.83 | a | 96.62 | j | 87.81 | 83.20 | 66.55 | 54.86 | b | 42.03 | b | 61.47 | c | |||
1990 | 44.55 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.13 | 34.42 | 44.03 | i | ||
1991 | 41.37 | a | 52.71 | 53.87 | a | 60.57 | 65.48 | b | 76.39 | b | 93.00 | c | 92.41 | b | 83.27 | d | 69.31 | b | 49.10 | 41.29 | 64.90 | |||||
1992 | 42.55 | 54.41 | 62.97 | 70.22 | c | 83.26 | d | 84.45 | a | 89.31 | b | 91.29 | 80.00 | a | 69.45 | b | 44.33 | 37.38 | b | 67.47 | ||||||
1993 | 30.86 | b | 34.93 | 52.33 | a | 61.21 | b | 74.62 | e | 76.07 | c | 81.33 | a | 84.23 | a | 81.37 | 66.39 | 47.00 | 42.84 | 61.10 | ||||||
1994 | 45.84 | 44.32 | 62.23 | a | 66.30 | 75.17 | a | 85.17 | a | 94.20 | a | 92.58 | 83.73 | 65.97 | 43.21 | a | 34.87 | 66.13 | ||||||||
1995 | 43.55 | 55.36 | 53.84 | 60.63 | 68.97 | 76.80 | 88.77 | 88.42 | 81.63 | 66.81 | d | 59.26 | c | 41.23 | a | 65.44 | ||||||||||
1996 | 41.53 | a | 46.75 | a | 58.13 | a | 64.93 | 68.45 | 84.82 | h | 98.57 | x | 92.65 | e | 77.87 | 65.97 | 54.33 | f | 43.58 | e | 62.21 | c | ||||
1997 | 42.58 | 48.11 | 61.37 | a | 60.97 | 77.29 | 78.33 | 88.03 | 90.29 | 81.03 | 65.97 | 55.20 | ----- | z | 68.11 | a | ||||||||||
1998 | 45.68 | 46.93 | 55.32 | 61.13 | 65.47 | a | 76.10 | 93.19 | 93.53 | a | 83.93 | 63.87 | 50.83 | 36.29 | 64.36 | |||||||||||
1999 | 43.20 | a | 46.64 | 54.29 | 59.83 | 71.24 | b | 80.83 | a | 90.74 | 88.39 | 80.93 | 71.97 | a | 57.97 | 41.35 | 65.62 | |||||||||
2000 | 42.97 | 49.81 | c | 56.03 | 70.04 | d | 73.77 | a | 85.27 | 90.45 | 91.52 | 77.87 | 64.97 | a | 42.28 | a | 36.42 | 65.11 | ||||||||
2001 | 34.06 | 41.41 | a | 57.55 | 60.17 | 77.48 | 84.14 | a | 89.71 | 94.29 | 83.80 | 69.87 | 52.93 | 38.84 | 65.35 | |||||||||||
2002 | 39.97 | 47.82 | 53.81 | 64.50 | 73.67 | a | 83.97 | 96.39 | 87.29 | 81.27 | 65.23 | 53.47 | 44.90 | 66.02 | ||||||||||||
2003 | 46.06 | 47.19 | a | 59.03 | 59.43 | 72.42 | 85.60 | 97.94 | 92.26 | 83.43 | 73.84 | 49.86 | b | 42.33 | a | 67.45 | ||||||||||
2004 | 34.84 | 43.71 | a | 64.45 | 69.43 | 71.69 | b | 83.48 | a | 93.63 | d | 90.46 | c | 79.53 | 65.00 | 46.97 | 43.14 | b | 65.53 | |||||||
2005 | 39.69 | b | 48.36 | 57.94 | 62.20 | 69.81 | 78.37 | 96.20 | a | 93.50 | a | 80.27 | 68.00 | h | 47.53 | 36.55 | 64.58 | a | ||||||||
2006 | 44.17 | a | 47.00 | 50.55 | 62.41 | a | 76.61 | 87.07 | a | 97.87 | a | 90.20 | a | 82.71 | b | 67.42 | 52.59 | a | 42.08 | e | 66.72 | |||||
2007 | 41.24 | f | 50.86 | 64.16 | 65.63 | 78.29 | 85.87 | 99.06 | 92.90 | a | 79.30 | 63.76 | b | 52.14 | a | 37.37 | a | 69.94 | a | |||||||
2008 | 36.80 | a | 49.11 | j | 53.90 | 61.30 | 73.68 | 84.13 | 94.83 | a | 92.33 | a | 82.87 | 67.71 | 54.29 | b | 41.87 | a | 67.61 | a | ||||||
2009 | 42.47 | a | 47.64 | 55.74 | d | 64.21 | a | 76.10 | 78.80 | 92.35 | 90.47 | l | 85.65 | d | 60.10 | 52.50 | 36.58 | 62.92 | a | |||||||
2010 | 43.48 | 48.04 | 55.42 | 60.69 | a | 65.77 | a | 79.17 | a | 92.35 | 88.71 | c | 83.45 | a | 68.87 | 49.03 | 40.45 | 64.62 | ||||||||
2011 | 39.30 | a | 45.89 | 52.71 | 57.17 | 65.52 | 75.11 | b | 91.24 | b | 93.71 | 87.63 | 67.93 | a | ----- | z | 44.13 | 65.49 | a | |||||||
2012 | 45.81 | 49.76 | 58.70 | a | 67.97 | a | 74.45 | 82.33 | 96.45 | b | 95.03 | 86.60 | 69.74 | 54.30 | 41.65 | 68.57 | ||||||||||
2013 | 28.55 | 49.14 | 60.97 | 65.63 | 74.74 | 85.77 | 97.74 | 94.00 | 79.93 | 65.00 | 53.48 | a | 39.68 | 66.22 | ||||||||||||
2014 | 47.81 | 51.39 | 59.86 | b | 66.03 | 77.06 | 83.27 | 97.32 | c | 90.41 | b | 83.20 | 72.90 | 51.77 | 45.00 | a | 68.84 | |||||||||
2015 | 42.13 | 55.18 | 65.42 | 65.00 | d | 71.56 | f | 93.20 | o | 89.41 | i | 92.52 | 83.69 | d | 73.84 | 49.77 | d | 40.81 | 63.15 | c | ||||||
2016 | 40.00 | 52.66 | 59.00 | a | 70.40 | 75.03 | 88.93 | 93.16 | 93.07 | a | 81.57 | 69.29 | 58.00 | 34.74 | 67.99 | |||||||||||
2017 | 30.45 | 46.86 | 61.81 | 62.30 | 76.13 | 85.53 | 98.97 | 95.29 | 81.73 | 67.63 | a | 53.40 | 35.77 | e | 66.32 | |||||||||||
2018 | 48.61 | 47.96 | 56.23 | 67.03 | 79.00 | 83.90 | 97.00 | 92.94 | 83.17 | 67.35 | 51.83 | ----- | z | 70.46 | a | |||||||||||
2019 | 45.62 | b | 42.29 | 55.39 | 66.47 | 70.52 | 81.76 | e | 92.06 | 92.97 | 78.97 | 63.13 | 54.97 | 40.61 | 65.40 | |||||||||||
2020 | 46.16 | 51.17 | 58.16 | 67.50 | 75.10 | 83.17 | 93.00 | 93.74 | 86.93 | 73.00 | 52.77 | ----- | z | 70.97 | a | |||||||||||
2021 | 45.19 | d | 50.36 | c | 59.06 | 68.70 | 73.32 | 91.33 | 99.00 | 91.42 | 84.60 | 67.52 | 56.43 | ----- | z | 71.54 | a | |||||||||
2022 | ----- | z | 51.35 | b | 61.52 | 62.20 | 70.83 | g | 83.83 | 95.13 | p | 97.65 | 88.03 | a | 74.23 | 43.93 | c | 35.73 | a | 66.50 | c | |||||
2023 | 40.52 | 47.04 | 48.29 | 64.00 | 76.45 | 78.56 | c | 97.10 | 93.50 | q | 82.32 | k | 68.92 | e | 53.96 | d | 41.13 | 61.60 | b | |||||||
2024 | 42.68 | c | 51.59 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.14 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.80 | 48.14 | 56.10 | 63.66 | 73.51 | 82.41 | 93.15 | 91.17 | 81.57 | 68.27 | 51.74 | 40.53 | 65.76 | |||||||||||||
S.D. | 4.87 | 4.10 | 4.09 | 4.30 | 4.23 | 4.18 | 3.48 | 3.35 | 3.58 | 4.19 | 4.07 | 3.68 | 1.52 | |||||||||||||
SKEW | -0.53 | -0.56 | 0.17 | -0.01 | 0.02 | -0.04 | -0.59 | -0.21 | -0.55 | 0.46 | -0.40 | -0.78 | -0.58 | |||||||||||||
MAX | 52.93 | 55.36 | 65.42 | 74.47 | 83.26 | 91.33 | 99.06 | 97.96 | 88.03 | 78.94 | 60.97 | 46.90 | 68.84 | |||||||||||||
MIN | 28.55 | 34.93 | 47.23 | 52.79 | 65.47 | 73.82 | 81.33 | 81.74 | 71.77 | 60.10 | 41.64 | 26.86 | 61.10 | |||||||||||||
YRS | 69 | 70 | 64 | 68 | 64 | 64 | 64 | 66 | 63 | 64 | 67 | 65 | 35 |