YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | 54.35 | a | 55.38 | 65.95 | 75.58 | 85.63 | 84.40 | 75.05 | 63.79 | 49.83 | 29.74 | 63.97 | b | |||||||||
1968 | 28.13 | 46.17 | 51.39 | 55.23 | 68.19 | 80.85 | 85.15 | 78.21 | 72.65 | 61.08 | 46.25 | 32.68 | 58.83 | |||||||||||||
1969 | 39.85 | 41.66 | 45.55 | 59.43 | 71.50 | 73.98 | 82.26 | 83.31 | 75.55 | 56.63 | 46.45 | 40.44 | 59.72 | |||||||||||||
1970 | 37.63 | 45.86 | 48.16 | 54.64 | a | 70.27 | 79.42 | 86.34 | 85.23 | 71.60 | 56.40 | 46.40 | 37.58 | 59.96 | ||||||||||||
1971 | 35.15 | 40.09 | 48.24 | b | 59.07 | c | 66.70 | c | 79.45 | 85.82 | 82.74 | 71.77 | 57.47 | 43.92 | 34.81 | 58.77 | ||||||||||
1972 | 36.98 | 44.52 | 56.53 | 59.19 | a | 69.27 | 79.23 | 85.23 | 81.23 | 73.02 | 59.37 | 43.28 | 33.60 | 60.12 | ||||||||||||
1973 | 25.65 | 39.20 | 46.56 | 56.45 | 69.40 | 76.58 | 83.63 | 83.45 | 70.10 | 60.18 | 48.07 | 37.18 | 58.04 | |||||||||||||
1974 | 29.18 | 34.95 | 53.52 | a | 56.13 | 71.92 | a | 82.42 | 83.16 | 81.19 | 72.41 | a | 60.50 | 45.79 | a | 35.52 | b | 58.89 | ||||||||
1975 | 30.95 | a | 38.42 | d | 45.71 | 50.43 | 62.43 | a | 73.50 | 82.33 | a | 78.15 | 70.50 | 57.13 | 44.78 | 37.03 | 55.95 | |||||||||
1976 | 34.15 | 45.50 | 44.85 | e | 57.69 | a | 69.00 | 78.04 | b | 86.27 | 81.84 | 72.90 | 58.58 | 46.83 | 34.77 | 59.20 | ||||||||||
1977 | 32.26 | 42.48 | 45.45 | 61.18 | 65.84 | 82.27 | 85.32 | 84.05 | 75.70 | 62.76 | 48.87 | 42.58 | 60.73 | |||||||||||||
1978 | 38.91 | d | 42.55 | 53.71 | 58.48 | 65.11 | 79.50 | 86.45 | 83.39 | 72.92 | 64.10 | 47.92 | 29.03 | a | 60.17 | |||||||||||
1979 | 27.50 | 32.11 | a | 47.05 | 57.80 | 65.92 | e | 75.10 | 84.50 | 81.11 | 77.17 | 63.76 | d | 41.60 | 36.19 | 57.48 | ||||||||||
1980 | 39.23 | 44.02 | a | 46.33 | a | 55.68 | b | 64.29 | b | 77.14 | b | 85.21 | 81.92 | 72.71 | b | 58.42 | 47.72 | a | 43.35 | 59.67 | ||||||
1981 | 40.27 | 42.77 | 48.50 | 62.84 | b | 66.81 | 81.50 | 86.00 | 82.53 | 74.07 | 58.34 | 48.75 | 39.21 | 60.97 | ||||||||||||
1982 | 36.17 | a | 38.20 | a | 49.50 | d | 56.66 | b | 68.07 | c | 75.62 | d | 83.50 | 81.74 | b | 73.02 | c | 55.12 | c | 45.61 | c | 38.14 | c | 58.45 | ||
1983 | 36.79 | e | 44.31 | b | 49.52 | b | 52.69 | c | 65.14 | b | 75.97 | a | 83.45 | 83.57 | a | 75.81 | a | 61.52 | c | 47.80 | c | 38.88 | f | 61.50 | a | |
1984 | 33.97 | 38.37 | b | 47.67 | d | 54.62 | b | 73.55 | 76.65 | 85.16 | b | 83.54 | g | 74.36 | i | 54.81 | d | 47.37 | d | 38.33 | e | 55.05 | b | |||
1985 | 36.71 | e | 38.07 | e | 48.53 | b | 61.30 | c | 69.54 | d | 81.16 | b | 86.07 | c | 83.77 | e | 71.52 | e | 59.88 | e | 47.15 | f | 39.08 | e | 61.42 | a |
1986 | 41.24 | h | 45.24 | e | 55.00 | f | 58.06 | d | 66.38 | e | 79.90 | f | 83.21 | b | 83.67 | b | 67.76 | k | 55.83 | j | 47.75 | l | 39.30 | f | 67.31 | g |
1987 | 34.26 | h | 41.35 | a | 44.54 | c | 59.31 | d | 69.35 | g | 80.70 | b | 83.06 | g | 81.09 | c | 73.97 | a | 62.75 | e | 45.93 | h | 35.21 | e | 59.86 | d |
1988 | 33.45 | 42.93 | 49.10 | a | 59.12 | d | 68.05 | 82.36 | b | 87.61 | d | 83.25 | e | 72.50 | j | 65.75 | a | 49.32 | h | 37.32 | i | 63.51 | c | |||
1989 | 30.87 | d | 36.70 | c | 54.14 | f | 66.56 | l | 71.69 | m | 79.80 | h | 87.02 | c | 81.53 | a | 74.00 | d | 62.17 | b | 47.26 | i | 37.24 | h | 62.05 | f |
1990 | 37.31 | j | 43.20 | c | 53.44 | g | 61.62 | i | 68.23 | g | ----- | z | ----- | z | ----- | z | ----- | z | 62.12 | b | 47.02 | c | 30.85 | g | 50.78 | i |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | 51.52 | c | 55.53 | a | 71.67 | e | 80.31 | c | 83.00 | a | 81.54 | c | 74.38 | d | 59.57 | c | 47.48 | a | 37.42 | a | 64.24 | b |
1998 | 40.07 | d | 41.54 | b | 49.38 | e | 55.08 | d | 67.88 | c | 74.98 | g | 85.87 | d | 83.48 | b | 73.70 | c | 58.83 | a | 47.48 | a | 35.31 | 58.06 | a | |
1999 | 40.25 | a | 43.33 | a | 51.93 | b | 53.12 | b | 64.87 | 76.28 | a | 84.36 | b | 79.30 | a | 71.74 | a | 60.87 | a | 48.90 | a | 37.27 | a | 59.35 | ||
2000 | 40.41 | b | 44.33 | 47.86 | c | 62.43 | 72.68 | 81.10 | 85.84 | 85.48 | 74.07 | 61.07 | a | 40.76 | a | 39.00 | 61.25 | |||||||||
2001 | 35.90 | a | 41.85 | b | 51.08 | 57.93 | a | 70.93 | a | 78.93 | a | 88.25 | u | 81.77 | a | 75.60 | 63.05 | b | 49.62 | 34.03 | a | 58.24 | a | |||
2002 | 35.71 | b | 37.78 | a | 46.16 | 61.80 | 68.68 | a | 81.62 | 87.74 | 82.35 | 72.12 | a | 58.30 | a | 45.68 | 37.56 | 59.63 | ||||||||
2003 | 41.00 | b | 41.12 | 50.10 | a | 57.10 | e | 69.35 | a | 79.48 | b | 89.03 | a | 84.31 | g | 73.41 | b | 64.19 | 45.22 | 36.90 | a | 58.81 | a | |||
2004 | 33.33 | d | 37.67 | c | 55.07 | a | 58.00 | a | 69.00 | b | 79.02 | 83.82 | 80.98 | 71.41 | b | 59.54 | d | 44.14 | a | 36.47 | 59.04 | |||||
2005 | 41.85 | a | 42.81 | a | 49.45 | b | 56.13 | 68.84 | b | 75.14 | b | 86.53 | a | 79.10 | f | 73.30 | 60.70 | a | 47.12 | a | 36.25 | a | 58.01 | a | ||
2006 | 36.92 | a | 40.31 | d | 46.75 | c | 59.20 | e | 72.05 | 81.98 | a | 87.66 | 81.80 | c | 68.66 | a | 57.69 | d | 46.90 | a | 36.07 | a | 59.66 | |||
2007 | 32.58 | a | 42.56 | c | 51.85 | e | 59.11 | c | 69.54 | c | 80.72 | 87.45 | 84.67 | d | 76.31 | d | 58.53 | b | 47.95 | b | 35.48 | c | 60.56 | |||
2008 | 33.20 | c | 40.14 | d | 47.61 | h | 53.71 | d | 63.84 | b | 78.09 | c | 86.10 | e | 84.38 | c | 73.76 | c | 59.54 | c | 48.36 | a | 37.50 | g | 62.11 | b |
2009 | 36.79 | b | 41.65 | d | 49.76 | d | 55.81 | a | 71.68 | f | 75.12 | a | 86.74 | 82.50 | c | 75.29 | b | 57.21 | 47.31 | a | 32.65 | a | 58.26 | a | ||
2010 | 33.89 | 39.30 | a | 47.61 | c | 55.86 | b | 62.19 | b | 78.83 | a | 85.57 | c | 79.30 | a | 73.72 | 60.91 | h | 44.93 | a | 40.89 | 58.37 | a | |||
2011 | 32.62 | b | 37.38 | c | 49.55 | 55.31 | a | 63.16 | 78.04 | e | 85.06 | 85.05 | c | 74.36 | a | 59.71 | 46.26 | a | 34.63 | a | 58.43 | |||||
2012 | 37.67 | a | 39.98 | 49.98 | 60.48 | 71.05 | 83.40 | 85.22 | d | 85.16 | 74.86 | a | 61.45 | b | 48.37 | 37.23 | 61.24 | |||||||||
2013 | 30.00 | 37.89 | 50.72 | a | 56.48 | c | 68.37 | 82.45 | 87.29 | 82.05 | 73.88 | 56.00 | 44.75 | 30.29 | 58.35 | |||||||||||
2014 | 36.11 | 44.30 | 49.53 | 56.67 | 66.11 | 78.89 | b | 86.82 | 79.10 | 75.33 | 62.02 | a | 45.28 | a | 39.39 | 59.96 | ||||||||||
2015 | 34.00 | 45.45 | 52.08 | a | 57.37 | 64.29 | 79.68 | 81.89 | 81.45 | 75.80 | 63.89 | 44.22 | 34.77 | a | 59.57 | |||||||||||
2016 | 34.58 | 40.18 | a | 51.55 | 57.35 | 65.74 | 83.58 | 86.45 | 81.16 | 71.93 | 63.48 | 51.33 | 37.92 | 60.44 | ||||||||||||
2017 | 38.18 | 47.08 | b | 53.95 | 57.32 | 66.82 | 82.78 | 87.10 | 83.00 | 73.80 | 58.35 | 51.17 | 38.23 | 61.48 | ||||||||||||
2018 | 38.48 | a | 41.15 | a | 48.79 | c | 61.92 | d | 71.23 | a | 83.78 | 88.73 | 84.26 | 77.32 | 57.66 | 43.05 | 35.56 | 60.99 | ||||||||
2019 | 34.66 | 36.39 | 49.76 | 59.98 | 61.23 | 77.07 | 85.56 | 85.03 | 77.00 | 54.42 | 45.85 | 36.45 | 58.62 | |||||||||||||
2020 | 33.23 | 39.34 | 51.06 | 57.80 | 71.68 | 79.60 | 85.63 | 88.05 | 73.58 | 62.00 | 46.50 | 32.84 | 60.11 | |||||||||||||
2021 | 34.32 | 41.45 | 47.92 | 58.98 | 69.98 | 84.92 | 88.69 | 83.37 | 76.53 | 57.61 | c | 50.77 | f | 39.94 | g | 64.38 | b | |||||||||
2022 | 35.58 | l | 37.72 | j | 50.13 | e | 59.87 | 69.31 | 83.05 | a | 87.67 | a | 84.84 | 78.41 | a | 61.29 | 41.62 | 36.97 | 65.32 | b | ||||||
2023 | 37.32 | 34.84 | 44.03 | 55.43 | 70.11 | 75.95 | 87.92 | 83.48 | 74.15 | 62.26 | 46.43 | 38.00 | 59.16 | |||||||||||||
2024 | 37.89 | 42.73 | a | 50.81 | 55.46 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.81 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.32 | 41.05 | 49.44 | 57.49 | 67.96 | 79.29 | 85.69 | 82.66 | 73.85 | 60.04 | 46.46 | 36.41 | 59.52 | |||||||||||||
S.D. | 3.76 | 3.27 | 2.85 | 2.63 | 3.00 | 2.89 | 1.76 | 2.01 | 2.00 | 2.73 | 2.33 | 2.98 | 1.20 | |||||||||||||
SKEW | -0.49 | -0.41 | 0.26 | -0.11 | -0.30 | -0.12 | -0.28 | -0.14 | -0.08 | -0.08 | -0.34 | -0.26 | -0.67 | |||||||||||||
MAX | 41.85 | 47.08 | 56.53 | 62.84 | 73.55 | 84.92 | 89.03 | 88.05 | 78.41 | 65.75 | 51.33 | 43.35 | 61.48 | |||||||||||||
MIN | 25.65 | 32.11 | 44.03 | 50.43 | 61.23 | 73.50 | 81.89 | 78.15 | 68.66 | 54.42 | 40.76 | 29.03 | 55.95 | |||||||||||||
YRS | 46 | 49 | 48 | 49 | 47 | 47 | 48 | 47 | 47 | 49 | 45 | 44 | 32 |