YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.25 | g | 89.69 | d | 74.66 | b | 61.96 | b | 46.71 | c | 68.26 | h |
1963 | 35.59 | b | 59.08 | b | 60.63 | d | 69.39 | b | 86.90 | 91.28 | a | 102.00 | b | 94.46 | c | 88.25 | b | 79.07 | a | 59.34 | a | 45.54 | c | 72.63 | ||
1964 | 45.23 | 52.04 | b | 56.21 | c | 68.79 | a | 79.97 | 90.50 | b | 100.13 | 96.23 | 87.04 | b | 79.86 | c | 50.43 | i | 46.83 | b | 72.98 | a | ||||
1965 | 47.77 | a | 53.18 | f | 57.74 | 68.25 | b | 75.42 | g | 85.52 | c | 94.59 | b | 94.35 | 82.93 | 75.33 | a | 59.18 | b | 44.90 | 71.06 | b | ||||
1966 | 43.03 | a | 44.96 | 64.29 | 73.63 | 85.06 | 93.17 | 98.16 | 96.97 | 87.80 | 72.39 | 59.43 | 45.93 | a | 72.07 | |||||||||||
1967 | 43.23 | 56.82 | 66.39 | 67.23 | 78.84 | 87.20 | 98.03 | 95.87 | 85.33 | 77.26 | 60.63 | 37.03 | a | 71.16 | ||||||||||||
1968 | 34.87 | 55.86 | 63.19 | 67.20 | ----- | z | 94.50 | 96.52 | 89.26 | 87.03 | 75.10 | 57.77 | 40.23 | 69.23 | a | |||||||||||
1969 | 50.07 | a | 48.93 | 57.90 | 72.63 | 83.83 | a | 90.33 | 99.32 | 97.94 | 88.43 | 67.61 | 56.52 | a | 49.32 | 71.90 | ||||||||||
1970 | 47.29 | 56.68 | 57.74 | 64.43 | 82.65 | 90.73 | 97.45 | b | 97.38 | b | 86.29 | b | 68.93 | a | 57.36 | b | 46.63 | a | 71.13 | |||||||
1971 | 45.53 | a | 52.96 | a | 61.47 | a | 68.11 | b | 75.90 | b | 95.32 | e | 101.86 | c | 96.55 | b | 83.14 | b | 68.45 | 53.00 | 41.80 | a | 70.34 | |||
1972 | 48.50 | e | 58.52 | b | 70.56 | d | 72.74 | c | 83.19 | d | ----- | z | 99.72 | b | 93.53 | a | 84.97 | 69.15 | e | 49.88 | e | 39.04 | d | 69.98 | a | |
1973 | 33.90 | a | 44.62 | b | 55.18 | c | 66.34 | a | 81.62 | j | 88.76 | e | 97.61 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.40 | f |
1974 | ----- | z | ----- | z | ----- | z | 70.77 | 88.16 | 99.03 | 97.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 88.82 | h | |||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | 84.00 | 97.07 | 96.48 | 97.68 | 83.30 | 69.58 | 59.97 | a | 49.23 | 79.66 | d | |||||||
1987 | 46.39 | 53.07 | 59.00 | a | 77.53 | 82.45 | 97.77 | 97.00 | 93.45 | 89.97 | 77.42 | 58.23 | 46.08 | e | 73.20 | |||||||||||
1988 | 46.23 | 56.59 | b | ----- | z | 67.15 | q | 83.80 | f | 94.43 | 103.39 | 97.29 | 88.73 | 80.29 | 62.70 | 48.61 | 75.36 | c | ||||||||
1989 | 41.45 | 51.68 | 70.94 | 82.77 | 86.42 | 93.14 | b | 103.32 | 95.47 | a | 89.83 | 75.42 | 62.33 | 51.29 | 75.34 | |||||||||||
1990 | 47.35 | 53.64 | 66.03 | 75.87 | 81.68 | 97.87 | 100.32 | 96.00 | 88.93 | 74.87 | 58.83 | 41.77 | 73.60 | |||||||||||||
1991 | 41.84 | 55.96 | 56.93 | a | 71.57 | 81.07 | a | 91.97 | 100.45 | 96.97 | 88.90 | 77.74 | 56.40 | 42.03 | 71.82 | |||||||||||
1992 | 40.39 | 54.79 | 62.97 | 80.14 | a | ----- | z | 94.43 | w | 97.00 | b | 95.58 | 87.79 | b | 77.19 | 53.25 | b | 39.21 | b | 68.83 | b | |||||
1993 | 45.77 | a | 52.59 | a | 66.00 | b | 74.83 | a | 86.03 | a | 92.14 | a | 99.43 | a | 94.26 | 90.07 | 72.00 | a | 54.54 | b | 47.12 | g | 75.24 | a | ||
1994 | 50.48 | d | 50.56 | c | 69.14 | b | 74.26 | c | 83.24 | f | 99.96 | b | 103.88 | g | 99.48 | f | 90.73 | d | 75.57 | c | 56.30 | c | 49.15 | e | 68.46 | c |
1995 | 48.48 | d | 63.74 | i | 66.84 | f | 74.38 | i | 78.92 | g | 93.32 | e | 99.56 | d | ----- | z | ----- | z | 82.04 | e | 69.28 | e | 53.18 | c | 74.31 | f |
1996 | 53.28 | f | 58.60 | d | 67.96 | d | 78.35 | d | ----- | z | ----- | z | ----- | z | 100.19 | d | 88.35 | d | 73.92 | e | 57.63 | 49.27 | a | 71.78 | d | |
1997 | 47.65 | 53.89 | 70.70 | d | 69.34 | a | 88.60 | a | 94.82 | b | 99.07 | a | 95.74 | 85.79 | b | 74.45 | b | 60.62 | a | 46.92 | e | 73.97 | ||||
1998 | 52.48 | b | 51.75 | 63.13 | 69.13 | 81.27 | a | 90.79 | b | 100.11 | c | 97.11 | c | 85.92 | e | 72.13 | a | 56.80 | 47.97 | 72.38 | ||||||
1999 | 53.43 | a | 57.15 | a | 68.76 | b | 68.21 | a | 81.70 | a | 93.67 | c | 94.33 | a | 91.86 | b | 86.90 | 78.16 | 63.10 | 49.00 | 73.86 | |||||
2000 | 52.55 | 55.54 | c | 63.32 | 79.38 | a | 90.65 | 96.48 | a | 100.17 | a | 97.59 | b | 90.13 | 72.55 | 50.73 | 48.48 | 74.80 | ||||||||
2001 | 44.61 | 52.32 | 64.43 | a | 73.27 | 89.07 | b | 97.10 | a | 97.34 | b | 96.03 | b | 92.36 | b | 78.66 | b | 60.47 | 45.06 | 74.23 | ||||||
2002 | 47.37 | a | 55.04 | a | 62.10 | b | 79.93 | a | 86.21 | b | 98.30 | c | 102.31 | b | 98.26 | d | 85.76 | a | 71.92 | f | ----- | z | ----- | z | 79.47 | c |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.45 | a | 103.23 | a | 95.20 | a | 88.87 | 77.40 | a | 56.72 | l | 47.06 | o | 91.83 | g | |
2004 | 43.06 | m | 47.95 | j | 69.75 | c | 70.52 | c | 84.07 | a | 93.45 | a | 97.13 | 93.31 | b | 85.34 | a | 68.67 | a | 53.48 | e | ----- | z | 79.52 | c | |
2005 | ----- | z | ----- | z | 60.23 | 68.73 | 81.90 | 88.83 | 101.03 | 91.20 | a | 86.83 | 72.10 | 58.24 | a | ----- | z | 78.79 | c | |||||||
2006 | ----- | z | ----- | z | 58.00 | 72.55 | a | 85.27 | a | 96.03 | 98.16 | 93.29 | 80.93 | 67.45 | 58.18 | b | 44.07 | a | 75.39 | b | ||||||
2007 | 42.60 | a | 55.04 | 64.03 | 71.43 | b | 82.45 | 94.80 | e | 99.55 | 95.26 | 87.30 | 70.58 | 61.34 | a | 43.43 | c | 72.32 | ||||||||
2008 | 42.33 | a | 51.17 | 63.16 | 69.13 | 77.90 | 94.67 | 99.94 | 96.94 | 87.93 | 73.03 | a | 59.72 | a | 45.63 | d | 71.80 | |||||||||
2009 | 46.74 | d | 53.64 | 65.52 | 70.38 | a | 86.13 | 86.10 | 99.42 | 95.58 | 87.97 | 69.00 | 58.29 | b | 40.32 | 71.59 | ||||||||||
2010 | 40.74 | 48.25 | 59.12 | f | 69.28 | e | 76.45 | 92.97 | a | 97.48 | 90.77 | 89.57 | 71.06 | 55.64 | b | 50.33 | d | 71.14 | a | |||||||
2011 | 46.06 | 49.54 | 62.39 | 69.62 | a | 75.23 | 91.77 | 95.65 | 97.74 | 86.53 | 72.32 | 55.28 | a | 42.74 | 70.41 | |||||||||||
2012 | 48.52 | 52.41 | 63.48 | 74.76 | a | 85.20 | f | 96.90 | 96.04 | c | 96.07 | a | 87.23 | 74.28 | b | 59.93 | c | 48.31 | b | 72.54 | a | |||||
2013 | 39.29 | 49.27 | b | 64.97 | 72.13 | 81.16 | 96.87 | 97.10 | a | 91.03 | 83.13 | 68.87 | 56.47 | 40.10 | 70.03 | |||||||||||
2014 | 48.10 | 58.39 | 63.90 | 70.43 | 80.87 | 94.03 | 98.32 | 90.68 | 88.23 | 75.45 | 59.76 | a | 49.88 | f | 75.29 | a | ||||||||||
2015 | 41.45 | 58.19 | a | 66.03 | a | 71.37 | 74.21 | c | 92.83 | 93.61 | 92.10 | 88.93 | c | 73.68 | 54.70 | 43.71 | 70.90 | |||||||||
2016 | 44.23 | 54.66 | 66.68 | 69.97 | 77.17 | a | 98.33 | 98.86 | b | 93.00 | 84.54 | b | 75.03 | 59.00 | 48.74 | 72.52 | ||||||||||
2017 | 47.45 | 57.37 | a | 67.42 | 70.37 | 79.71 | 97.03 | 98.58 | 94.90 | 85.33 | 74.85 | e | 64.30 | 49.53 | a | 73.90 | ||||||||||
2018 | 49.29 | 54.32 | 61.48 | 75.60 | 84.23 | 97.50 | 98.87 | 96.19 | 90.97 | 65.74 | 57.79 | a | 49.11 | v | 75.64 | a | ||||||||||
2019 | 42.50 | a | 45.64 | 61.04 | g | 74.00 | k | 73.96 | d | 91.14 | b | 99.76 | f | 97.95 | i | 89.33 | 70.55 | 56.53 | 42.68 | 64.04 | d | |||||
2020 | 44.13 | 48.25 | y | 63.64 | i | 79.71 | w | 89.20 | u | 93.87 | 99.19 | 101.58 | 89.17 | 78.97 | 59.89 | b | 44.81 | 76.45 | d | |||||||
2021 | 45.94 | 56.29 | 60.19 | 74.90 | 83.68 | 97.14 | b | 99.06 | 97.19 | 89.30 | 68.13 | 60.90 | 47.68 | 73.37 | ||||||||||||
2022 | 49.32 | 51.04 | 63.42 | 74.53 | 83.42 | 94.03 | ----- | z | 95.06 | 90.10 | 73.52 | 51.77 | 44.55 | 70.07 | a | |||||||||||
2023 | 44.16 | 47.07 | a | 52.90 | 69.83 | 82.19 | 88.60 | 102.71 | 94.71 | 85.53 | 75.37 | a | 58.40 | 48.03 | 70.79 | |||||||||||
2024 | 47.19 | 54.24 | 62.94 | 70.71 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.79 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.26 | 53.34 | 63.24 | 72.04 | 82.40 | 93.76 | 98.85 | 95.28 | 87.45 | 73.66 | 58.17 | 45.62 | 72.40 | |||||||||||||
S.D. | 4.37 | 3.79 | 4.37 | 4.04 | 4.11 | 3.46 | 2.33 | 2.54 | 2.41 | 3.89 | 3.61 | 3.71 | 1.46 | |||||||||||||
SKEW | -0.64 | -0.59 | -0.22 | 0.72 | -0.26 | -0.45 | 0.04 | -0.23 | -0.54 | -0.01 | 0.14 | -0.35 | 0.22 | |||||||||||||
MAX | 53.43 | 59.08 | 70.94 | 82.77 | 90.65 | 99.96 | 103.39 | 101.58 | 92.36 | 82.04 | 69.28 | 53.18 | 75.34 | |||||||||||||
MIN | 33.90 | 44.62 | 52.90 | 64.43 | 73.96 | 85.52 | 93.61 | 89.26 | 80.93 | 65.74 | 49.88 | 37.03 | 70.03 | |||||||||||||
YRS | 44 | 42 | 43 | 44 | 39 | 47 | 46 | 45 | 48 | 48 | 46 | 42 | 25 |