YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.29 | r | 76.58 | 74.73 | 62.33 | a | 54.76 | 45.60 | 32.61 | c | 57.77 | f | ||||
1966 | 26.55 | 28.95 | 44.32 | 52.59 | a | 64.50 | 72.87 | 79.39 | 76.47 | 67.05 | 53.10 | 44.43 | 30.39 | 53.38 | ||||||||||||
1967 | 24.50 | 37.89 | 48.76 | 50.40 | 58.87 | 68.33 | 78.48 | 77.05 | 68.18 | 56.66 | 42.45 | 24.40 | 53.00 | |||||||||||||
1968 | 22.11 | 38.57 | 44.37 | 48.50 | 60.84 | 73.42 | 78.00 | 70.85 | 65.12 | 55.08 | a | 39.65 | 25.68 | 51.85 | ||||||||||||
1969 | 33.47 | 34.91 | 38.73 | 53.40 | 65.81 | d | 68.68 | 79.32 | 79.37 | 69.15 | 48.77 | 38.28 | 33.47 | b | 53.61 | |||||||||||
1970 | 30.76 | 39.07 | 41.15 | a | 47.70 | 62.94 | 70.55 | 78.23 | a | 78.00 | d | 64.85 | 49.47 | b | 42.50 | b | 32.53 | 53.15 | ||||||||
1971 | 29.81 | 34.38 | 42.53 | b | 51.80 | b | 60.74 | b | 72.85 | 80.42 | a | 78.05 | a | 62.98 | e | 52.03 | a | 37.05 | 26.02 | d | 52.39 | |||||
1972 | 33.36 | m | 37.93 | a | 48.44 | d | 54.68 | h | 62.97 | b | 73.12 | d | 78.45 | a | 75.23 | g | 67.43 | a | 53.50 | 37.75 | 25.40 | a | 53.89 | c | ||
1973 | 13.97 | b | 30.12 | 41.43 | b | 48.28 | e | ----- | z | 70.45 | a | 77.65 | 77.95 | c | 66.57 | 55.96 | d | 43.19 | a | 32.82 | f | 52.56 | b | |||
1974 | 22.13 | d | 28.08 | b | 49.03 | a | 50.20 | e | 66.05 | b | 72.78 | n | 78.58 | s | 75.68 | c | 67.03 | a | 55.74 | d | 40.58 | 27.82 | f | 50.50 | c | |
1975 | 26.64 | i | 34.04 | a | 41.93 | b | 46.38 | a | 56.57 | b | 67.33 | c | 78.45 | b | 74.56 | f | 65.82 | 52.36 | b | 37.68 | 28.52 | b | 50.91 | b | ||
1976 | 22.90 | 38.66 | 39.12 | a | 51.50 | 61.53 | a | 69.88 | b | 79.73 | a | 74.90 | 66.50 | 50.05 | 39.82 | 26.47 | 51.75 | |||||||||
1977 | 25.73 | 35.24 | a | 38.58 | 53.81 | a | 61.41 | c | 76.50 | 78.60 | 78.11 | 70.88 | 55.78 | f | 41.16 | b | 36.85 | 54.26 | a | |||||||
1978 | 31.84 | 36.41 | 47.15 | a | 54.25 | d | 60.95 | b | 74.48 | 79.24 | 76.44 | 65.88 | 58.02 | b | 42.03 | a | 21.42 | 54.01 | ||||||||
1979 | 21.48 | 26.79 | 42.72 | f | 52.60 | 61.24 | 70.02 | 77.84 | 74.34 | b | 69.55 | 56.81 | b | 32.88 | a | 27.10 | a | 51.88 | a | |||||||
1980 | 35.86 | b | 42.41 | b | 43.48 | d | 50.50 | a | 57.71 | c | 72.42 | 78.57 | b | 74.48 | c | 65.61 | b | 51.23 | a | 40.70 | 36.69 | 54.14 | ||||
1981 | 33.60 | 36.72 | a | 41.77 | 56.05 | 60.34 | 74.63 | 78.08 | 74.13 | 68.22 | 52.63 | 43.03 | 33.71 | 54.41 | ||||||||||||
1982 | 29.83 | a | 35.10 | c | 44.19 | b | 50.77 | b | 61.02 | b | 69.25 | 77.35 | 75.54 | c | 67.17 | d | 49.10 | b | 37.78 | 31.38 | a | 52.37 | ||||
1983 | 31.05 | a | 38.77 | 43.70 | a | 46.45 | b | 59.57 | a | 69.22 | 76.93 | b | 77.07 | c | 68.29 | d | 54.66 | c | 41.19 | a | 32.32 | a | 53.27 | |||
1984 | 23.30 | a | 31.04 | a | 42.43 | a | 47.53 | 64.95 | a | 69.55 | b | 77.45 | a | 75.50 | b | 68.29 | a | 49.73 | a | 40.07 | 31.11 | 51.75 | ||||
1985 | 28.55 | 29.00 | b | 43.07 | a | 54.41 | b | 63.19 | 72.45 | 78.18 | 76.87 | 63.69 | a | 53.18 | a | 41.98 | 31.53 | a | 53.01 | |||||||
1986 | 33.10 | 40.54 | 48.71 | b | 52.75 | 60.26 | 74.13 | 76.79 | b | 77.52 | a | 64.23 | 49.92 | a | 41.40 | a | 31.10 | a | 54.20 | |||||||
1987 | 26.00 | 36.27 | 41.08 | 54.29 | b | 60.92 | ----- | z | 76.05 | a | 73.62 | b | 64.74 | a | 55.74 | 39.70 | 29.40 | a | 50.71 | a | ||||||
1988 | 22.41 | b | 33.90 | 40.63 | 50.18 | 59.81 | 74.13 | 78.40 | 76.27 | 64.43 | a | 57.44 | 42.07 | 27.28 | a | 52.25 | ||||||||||
1989 | 19.97 | a | 31.06 | a | 47.58 | a | 56.12 | 62.79 | 69.13 | c | 79.37 | 73.72 | a | 65.70 | c | 53.64 | b | 40.36 | a | 28.71 | 52.35 | |||||
1990 | 25.97 | b | 36.13 | a | 47.13 | a | 53.65 | 61.26 | d | 74.98 | 78.58 | 75.57 | c | 68.63 | c | 52.19 | d | 37.89 | c | 22.16 | 52.84 | |||||
1991 | 20.91 | b | ----- | z | 41.23 | a | 48.38 | a | 58.84 | b | 69.86 | a | 75.65 | 74.73 | a | 64.47 | 53.15 | a | 36.76 | a | 27.50 | a | 51.95 | a | ||
1992 | 25.47 | b | 40.08 | c | 48.38 | e | 61.24 | a | 67.25 | e | 73.18 | b | 79.28 | a | 76.48 | d | 68.17 | d | 60.15 | g | 40.45 | a | 31.29 | g | 58.00 | b |
1993 | 36.69 | b | 39.58 | b | 49.17 | e | 55.14 | e | 61.17 | h | 68.10 | f | 76.06 | f | 73.44 | f | 64.83 | g | 49.68 | f | 34.04 | d | 28.63 | 40.54 | f | |
1994 | 31.08 | a | 33.76 | c | 44.16 | c | 52.41 | a | 63.00 | e | 76.09 | b | 78.76 | b | 79.81 | b | 66.31 | d | 52.50 | b | 35.72 | c | 31.85 | a | 53.79 | |
1995 | 31.93 | c | 41.54 | 46.31 | 49.76 | i | 56.55 | 67.45 | b | 76.32 | 80.03 | a | 69.32 | 55.36 | c | 46.70 | b | 37.02 | 55.32 | a | ||||||
1996 | 34.13 | 40.44 | b | 46.41 | c | 53.22 | 68.31 | e | 77.91 | a | 83.03 | a | 81.05 | 66.53 | a | 55.25 | c | 42.84 | b | 35.20 | a | 57.03 | ||||
1997 | 33.31 | b | 36.00 | d | 48.48 | a | 49.17 | 64.90 | a | 76.02 | a | 78.61 | 76.50 | b | 68.57 | 54.52 | 42.02 | a | 31.00 | 54.92 | ||||||
1998 | 36.52 | a | 38.07 | 44.14 | b | 49.76 | a | 63.53 | a | 69.12 | a | 81.97 | 77.89 | c | 70.17 | a | 53.40 | b | 41.87 | 28.83 | b | 54.61 | ||||
1999 | 35.45 | 38.65 | b | 48.56 | 48.17 | 59.10 | 71.77 | b | 77.37 | 73.68 | a | 66.04 | b | 55.26 | 44.68 | b | 31.13 | 54.15 | ||||||||
2000 | 35.27 | a | 40.13 | b | 42.63 | 55.98 | b | 67.23 | a | 74.25 | 80.23 | 80.48 | 69.29 | a | 56.05 | a | 35.36 | a | 33.10 | 55.83 | ||||||
2001 | 29.98 | a | 37.30 | a | 45.69 | 53.93 | b | 65.18 | a | 75.21 | d | 79.45 | a | 76.79 | 69.93 | a | 57.39 | c | 44.02 | b | 29.77 | a | 55.39 | |||
2002 | 30.24 | b | 32.07 | a | 42.45 | b | 56.93 | 63.88 | b | 76.98 | b | 81.73 | a | 76.42 | 66.60 | 51.61 | 39.73 | b | 32.78 | b | 54.29 | |||||
2003 | 36.41 | b | 36.04 | 44.16 | 53.02 | c | 63.77 | a | 72.55 | 81.50 | e | 78.67 | d | 67.79 | b | 60.21 | 40.82 | b | 32.77 | g | 57.72 | a | ||||
2004 | 27.32 | c | 34.48 | a | 50.72 | b | 53.48 | a | 65.65 | a | 73.87 | 79.37 | a | 76.53 | 65.90 | e | 55.13 | a | 41.23 | 32.21 | 54.66 | |||||
2005 | 38.90 | 39.19 | a | 45.03 | a | 51.63 | 64.39 | c | 70.48 | 81.93 | a | 74.55 | a | 67.17 | 55.56 | 42.68 | 31.31 | 55.24 | ||||||||
2006 | 32.79 | 34.42 | c | 41.34 | b | 53.97 | 65.24 | b | 75.42 | 81.23 | a | 76.08 | e | 62.84 | b | 51.88 | b | 42.90 | 30.86 | b | 54.08 | |||||
2007 | 26.70 | c | 39.60 | b | 45.76 | b | 53.93 | c | 64.76 | b | 73.88 | e | 83.11 | c | 79.27 | c | 70.26 | c | 54.05 | b | 43.75 | b | 29.97 | a | 55.42 | |
2008 | 27.63 | a | 35.13 | c | 43.92 | a | 50.37 | 59.04 | d | 72.43 | c | 81.73 | 77.45 | 67.48 | 55.03 | 43.78 | 32.26 | 53.85 | ||||||||
2009 | 31.42 | 37.98 | a | 44.84 | 51.48 | a | 67.27 | a | 69.77 | 80.94 | 76.40 | 69.52 | a | 49.00 | n | 43.78 | 24.74 | 54.38 | a | |||||||
2010 | 27.18 | 32.95 | 42.77 | a | 52.93 | 59.27 | 73.62 | 80.05 | 75.38 | b | 69.20 | 56.19 | 41.41 | a | 37.24 | 54.02 | ||||||||||
2011 | 26.11 | 32.77 | 43.97 | 49.43 | 57.19 | 72.78 | 76.78 | b | 79.24 | 68.40 | 54.35 | a | 41.61 | b | 28.66 | 52.61 | ||||||||||
2012 | 31.94 | 34.41 | 45.90 | a | 55.19 | d | 64.69 | b | 76.18 | 80.00 | 77.78 | a | 68.71 | b | 56.08 | 43.67 | g | 34.06 | g | 59.09 | b | |||||
2013 | 20.66 | b | 32.41 | 44.68 | 51.37 | c | 63.29 | 76.12 | 82.34 | 76.06 | 68.25 | 51.03 | 38.82 | 21.93 | c | 52.25 | ||||||||||
2014 | 30.68 | c | 39.07 | 44.36 | b | 51.83 | 60.95 | 72.77 | 80.88 | a | 73.97 | 70.53 | 56.55 | b | 39.48 | 35.27 | 54.70 | |||||||||
2015 | 31.66 | 40.05 | 47.66 | 52.05 | 59.92 | 75.93 | 75.14 | c | 76.03 | 70.33 | 58.16 | 40.69 | a | 29.87 | 54.79 | |||||||||||
2016 | 28.88 | b | 33.62 | a | 45.87 | d | 51.53 | 59.21 | 77.28 | 80.27 | a | 74.36 | b | 67.10 | 56.71 | b | 44.95 | b | 31.33 | a | 54.26 | |||||
2017 | 31.73 | 42.80 | 49.63 | 52.25 | 61.38 | a | 76.26 | a | 80.24 | 76.39 | 68.90 | d | 52.13 | a | 46.67 | 31.52 | f | 58.03 | a | |||||||
2018 | 31.91 | b | 37.81 | b | 43.97 | 55.65 | c | 65.06 | 76.17 | a | 82.65 | a | 78.66 | 70.60 | a | 51.42 | a | 37.35 | 29.63 | a | 55.07 | |||||
2019 | 28.23 | g | 33.48 | 44.00 | b | 54.65 | c | 58.32 | a | 70.35 | 80.16 | 78.21 | 70.25 | 49.15 | e | 40.28 | 30.65 | 55.41 | a | |||||||
2020 | 27.03 | a | 33.54 | b | 45.88 | f | 52.13 | 66.74 | 72.61 | c | 79.24 | 81.70 | a | 67.89 | b | 54.35 | 42.27 | 27.06 | 54.96 | a | ||||||
2021 | 29.35 | 36.12 | c | 43.10 | a | 52.15 | 63.80 | a | 78.19 | a | 81.92 | 76.69 | 69.85 | 51.20 | a | 44.21 | d | 34.82 | 55.12 | |||||||
2022 | 29.82 | 32.80 | a | 43.23 | a | 51.60 | a | 62.84 | 73.12 | 80.98 | 77.21 | 71.22 | a | 53.45 | a | 35.95 | a | 31.13 | 53.61 | |||||||
2023 | 30.76 | 28.12 | 38.50 | a | 50.40 | 63.74 | 69.78 | e | 80.90 | 77.18 | a | 68.71 | b | 56.87 | h | 39.43 | g | 32.80 | d | 54.09 | b | |||||
2024 | 32.56 | d | 38.74 | j | 45.76 | b | 50.84 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.16 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.06 | 35.73 | 44.49 | 52.13 | 62.33 | 72.83 | 79.30 | 76.68 | 67.49 | 53.87 | 40.84 | 30.28 | 53.84 | |||||||||||||
S.D. | 5.05 | 3.79 | 2.98 | 2.81 | 2.94 | 2.86 | 1.93 | 2.08 | 2.19 | 2.63 | 3.02 | 3.75 | 1.23 | |||||||||||||
SKEW | -0.53 | -0.37 | 0.01 | 0.29 | -0.02 | -0.08 | 0.03 | 0.07 | -0.42 | -0.08 | -0.43 | -0.35 | 0.16 | |||||||||||||
MAX | 38.90 | 42.80 | 50.72 | 61.24 | 68.31 | 78.19 | 83.11 | 81.70 | 71.22 | 60.21 | 46.70 | 37.24 | 57.03 | |||||||||||||
MIN | 13.97 | 26.79 | 38.50 | 46.38 | 56.55 | 67.33 | 75.14 | 70.85 | 62.33 | 48.77 | 32.88 | 21.42 | 51.75 | |||||||||||||
YRS | 56 | 57 | 57 | 56 | 56 | 55 | 57 | 56 | 58 | 54 | 57 | 53 | 40 |