YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.34 | 47.30 | 37.47 | 48.37 | i | |||
1963 | 22.47 | a | 39.70 | c | 46.85 | a | 54.72 | 72.35 | 78.18 | 85.61 | 78.77 | 74.30 | 63.10 | 43.95 | 29.45 | 57.45 | ||||||||||
1964 | 28.63 | 32.31 | 40.11 | 51.10 | 67.02 | 77.27 | 84.61 | 77.45 | 68.50 | 60.76 | 37.68 | 28.35 | 54.48 | |||||||||||||
1965 | 29.87 | 34.80 | 41.15 | 50.70 | j | 61.22 | d | 72.52 | 80.06 | 79.48 | 65.62 | 58.39 | 47.48 | 33.13 | 54.88 | a | ||||||||||
1966 | 27.15 | 30.36 | 48.65 | 57.48 | 71.11 | 76.77 | 83.81 | 80.56 | 70.62 | 56.71 | 47.15 | 31.39 | c | 56.81 | ||||||||||||
1967 | 25.20 | u | 41.16 | f | 52.10 | 54.50 | m | 67.16 | 76.68 | 84.30 | c | 80.70 | a | 69.95 | 60.84 | 45.62 | 22.39 | 62.19 | c | |||||||
1968 | 21.37 | 40.20 | a | 46.61 | 51.64 | a | 65.55 | 79.85 | 82.21 | 73.95 | b | 72.13 | 59.21 | 40.40 | 22.81 | 54.66 | ||||||||||
1969 | 28.84 | 35.02 | 40.69 | 58.09 | a | 71.32 | 74.67 | a | 83.60 | 83.27 | a | 73.77 | 51.34 | 40.48 | 33.90 | 56.25 | ||||||||||
1970 | 33.48 | 41.55 | i | 41.44 | 48.03 | 65.26 | 72.65 | 78.32 | 79.71 | 65.50 | 51.20 | a | 43.30 | 33.94 | 55.71 | a | ||||||||||
1971 | 32.38 | a | 37.59 | 44.90 | 53.08 | 58.87 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.99 | h | |||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.57 | 26.85 | 33.21 | j | ||
1973 | 22.97 | 35.02 | 41.65 | 49.48 | 63.23 | 71.85 | ----- | z | 75.38 | a | 61.47 | 51.19 | 42.93 | b | 33.11 | 49.84 | a | |||||||||
1974 | 24.61 | 27.80 | h | 51.50 | j | 53.07 | 68.79 | 76.67 | 79.69 | m | 76.27 | 66.92 | e | 57.15 | 43.25 | n | 29.48 | g | 60.50 | e | ||||||
1975 | 28.55 | 35.95 | f | 43.24 | 51.14 | e | 61.94 | 69.93 | 78.25 | i | 76.92 | a | 68.71 | w | 55.03 | ----- | z | ----- | z | 55.25 | e | |||||
1976 | 33.59 | n | 40.91 | 42.16 | 52.53 | 61.84 | 70.84 | a | 78.00 | 73.89 | 65.10 | a | 51.29 | 40.40 | 29.88 | a | 55.17 | a | ||||||||
1977 | 23.68 | 37.71 | 41.31 | 54.98 | 62.68 | 77.02 | 77.87 | 76.29 | 70.48 | 56.55 | 43.53 | 36.23 | c | 54.86 | ||||||||||||
1978 | 33.89 | c | 35.11 | 46.82 | 53.00 | 58.23 | 73.38 | a | 77.98 | a | 74.44 | 66.47 | a | 56.39 | 41.75 | 22.89 | 53.36 | |||||||||
1979 | 22.37 | 31.05 | 41.00 | a | 50.84 | a | 59.35 | 67.93 | a | 72.24 | 70.52 | 64.22 | 57.74 | 37.20 | 33.84 | c | 50.69 | |||||||||
1980 | 37.87 | a | 43.38 | d | 43.88 | a | 54.64 | a | 60.76 | 74.65 | 79.11 | 76.32 | 67.89 | b | 54.21 | 43.95 | b | 38.60 | b | 56.27 | ||||||
1981 | 35.95 | 38.74 | a | 43.42 | 57.79 | a | 58.74 | 77.32 | 78.31 | 75.37 | 67.38 | 54.20 | a | 43.85 | 34.78 | b | 55.49 | |||||||||
1982 | 32.72 | a | 31.25 | 44.12 | b | 51.78 | 60.85 | a | 70.32 | 78.30 | a | 75.21 | 68.25 | b | 51.40 | a | 41.38 | 34.04 | c | 53.30 | ||||||
1983 | 31.39 | 37.39 | 44.05 | a | 48.20 | c | 60.89 | 69.69 | a | 77.00 | 78.08 | 70.21 | a | 56.00 | b | 43.55 | a | 33.98 | c | 54.20 | ||||||
1984 | 29.92 | 36.90 | 44.55 | 50.20 | 68.63 | 71.24 | a | 78.81 | b | 75.60 | 68.60 | a | 49.71 | 43.72 | 34.95 | 54.40 | ||||||||||
1985 | 31.82 | a | 34.32 | 45.71 | 55.48 | 63.85 | 74.13 | 78.66 | b | 76.60 | a | 63.52 | a | 55.39 | 42.07 | 34.40 | 54.66 | |||||||||
1986 | 36.43 | b | 41.98 | 48.66 | b | 54.72 | a | 62.50 | a | 74.50 | c | 76.17 | b | 77.70 | c | 65.72 | c | 52.95 | 42.89 | b | 33.90 | a | 55.68 | |||
1987 | 30.31 | 38.74 | c | 42.56 | d | 55.83 | 62.50 | 74.88 | a | 77.47 | a | 74.59 | c | 66.76 | c | 57.29 | c | 41.41 | b | 30.76 | f | 56.58 | a | |||
1988 | 26.32 | a | 37.21 | a | 43.50 | d | 54.45 | b | 62.31 | 74.31 | a | 79.78 | a | 76.17 | a | 66.46 | b | 59.80 | a | 42.84 | b | 32.37 | 54.63 | |||
1989 | 27.39 | 34.94 | a | 51.57 | d | 60.76 | a | 66.40 | a | 73.17 | a | 80.45 | c | 75.23 | a | 69.95 | 55.92 | 43.22 | a | 32.71 | 55.98 | |||||
1990 | 29.34 | c | 36.86 | 47.42 | 56.25 | 63.85 | 78.37 | 78.59 | b | 75.16 | c | 70.84 | b | 55.32 | a | 41.95 | 24.65 | a | 54.88 | |||||||
1991 | 25.85 | a | 37.89 | 43.82 | a | ----- | z | 65.55 | u | 71.70 | 77.93 | b | 76.40 | a | 68.85 | c | 60.05 | b | 46.76 | a | 33.90 | b | 54.31 | b | ||
1992 | 32.03 | 41.84 | 49.58 | a | 60.65 | 64.48 | 71.57 | a | 77.69 | 75.26 | b | 68.55 | a | 58.45 | 39.28 | 27.10 | a | 55.54 | ||||||||
1993 | 38.29 | 38.91 | a | 45.83 | b | 52.22 | a | 61.95 | c | 71.60 | a | 78.60 | a | 74.42 | a | 68.17 | d | 53.10 | 39.05 | 32.82 | c | 54.58 | ||||
1994 | 34.68 | 35.93 | a | 47.98 | 53.74 | a | 64.16 | 77.58 | 81.38 | a | 79.81 | 69.22 | 53.45 | 39.90 | 34.57 | a | 56.03 | |||||||||
1995 | 35.21 | 44.70 | a | 46.48 | 52.19 | a | 58.16 | f | 69.00 | c | 76.57 | b | 78.95 | b | 69.85 | c | 55.96 | e | 45.40 | a | 35.16 | 55.41 | a | |||
1996 | 34.56 | 42.17 | c | 46.77 | 55.67 | 68.86 | b | 76.07 | b | 81.50 | 78.32 | 64.83 | a | 56.27 | c | 42.03 | 35.50 | a | 56.88 | |||||||
1997 | 29.90 | a | 37.56 | a | 48.82 | a | 50.72 | c | 65.33 | b | 73.47 | 77.35 | 75.15 | e | 69.70 | 53.88 | a | 42.83 | a | 32.30 | a | 54.75 | ||||
1998 | 35.23 | 37.41 | 45.24 | d | 50.47 | 62.90 | a | 71.55 | 79.81 | 77.81 | 71.17 | 55.90 | 43.52 | a | 34.48 | a | 55.46 | |||||||||
1999 | 38.42 | a | 41.30 | 50.81 | 50.30 | 61.23 | a | 72.89 | b | 77.77 | 74.18 | 66.50 | b | 56.50 | b | 46.64 | a | 32.43 | d | 55.75 | ||||||
2000 | 37.27 | a | 42.29 | 44.73 | a | 58.53 | a | 69.87 | 77.85 | 81.60 | a | 79.38 | b | 72.07 | 56.45 | b | 37.16 | a | 35.56 | 57.73 | ||||||
2001 | 33.03 | a | 40.39 | a | 48.02 | a | 55.98 | b | 68.57 | c | 76.59 | a | 79.73 | a | 77.00 | 71.83 | 59.53 | 46.50 | a | 33.94 | f | 59.74 | a | |||
2002 | 34.64 | i | 36.68 | i | 45.76 | d | 60.57 | c | 66.61 | c | 78.48 | g | 83.33 | k | 78.12 | k | 69.03 | n | 53.24 | j | 42.11 | l | 33.73 | k | 57.65 | i |
2003 | 40.02 | i | 37.26 | i | 46.36 | j | 55.33 | j | 66.76 | l | 74.55 | j | 84.35 | k | 80.76 | j | 69.72 | j | 60.75 | i | 42.75 | l | 35.77 | k | ----- | z |
2004 | 31.53 | p | 37.26 | l | 53.08 | f | 55.13 | g | 68.17 | k | 74.57 | g | 78.65 | h | 77.02 | e | 68.00 | h | 56.71 | l | 41.88 | e | 34.33 | d | 51.08 | i |
2005 | 40.44 | g | 40.75 | h | 45.48 | d | 57.24 | e | 65.75 | g | 73.67 | c | 81.98 | f | 75.82 | f | 70.06 | d | 59.23 | p | 46.22 | g | 29.83 | j | 61.61 | h |
2006 | 34.10 | f | 38.80 | h | 46.60 | b | 58.22 | l | 67.88 | c | 77.28 | e | 82.42 | k | 76.17 | h | 64.17 | j | 54.27 | c | 46.33 | j | 30.65 | h | 61.51 | h |
2007 | 29.72 | a | 40.07 | 49.22 | b | 55.64 | b | 63.46 | g | 75.54 | b | 81.93 | h | 79.16 | i | 71.32 | k | 58.83 | h | 45.55 | j | 36.00 | j | 50.04 | g | |
2008 | 26.88 | e | 37.39 | b | 44.47 | a | 53.68 | b | 57.26 | j | 70.00 | w | 80.77 | 78.89 | h | 69.78 | e | 58.06 | d | 46.75 | h | 36.86 | i | 53.00 | e | |
2009 | 34.83 | g | 39.88 | d | 47.95 | i | 54.91 | h | 68.55 | l | 72.00 | k | 80.89 | l | 76.68 | f | 70.20 | g | 54.76 | j | 44.16 | k | 30.11 | l | 39.88 | k |
2010 | 25.60 | g | 35.07 | g | 45.89 | h | 53.30 | h | 59.65 | k | 74.85 | f | 78.46 | e | 74.48 | g | 68.77 | h | 57.55 | i | 43.82 | h | 39.24 | h | 78.46 | k |
2011 | 27.67 | j | 34.27 | b | 47.11 | 55.83 | 62.44 | 75.70 | 79.70 | a | 77.07 | b | 68.20 | c | 55.98 | b | 43.59 | b | 31.32 | 57.38 | a | |||||
2012 | 35.88 | a | 39.00 | b | 48.23 | 57.42 | e | 66.84 | 78.32 | b | 78.95 | 77.33 | d | 69.65 | 58.74 | 45.42 | 34.67 | a | 57.54 | |||||||
2013 | 26.92 | a | 37.98 | 49.03 | a | 54.50 | 63.69 | 77.85 | 82.30 | a | 76.77 | c | 70.77 | 54.18 | 42.90 | a | 31.10 | a | 55.67 | |||||||
2014 | 35.52 | 39.85 | d | 48.15 | a | 55.20 | 62.48 | 74.27 | d | 81.95 | 74.88 | b | 70.50 | d | 58.70 | h | 44.21 | k | 38.55 | i | 60.31 | c | ||||
2015 | 35.84 | i | 43.24 | a | 50.42 | 54.60 | 60.68 | 74.47 | a | 76.56 | 77.17 | a | 71.37 | 60.65 | 42.40 | 33.30 | a | 58.62 | a | |||||||
2016 | 31.55 | 41.62 | 48.18 | 53.92 | k | 61.92 | 79.93 | 77.50 | 72.53 | 69.02 | 60.21 | 47.78 | 35.85 | 56.92 | a | |||||||||||
2017 | 35.81 | 44.86 | 52.39 | 54.02 | 60.76 | 75.75 | 80.28 | b | 75.23 | 70.13 | 58.66 | 50.95 | b | 36.84 | 57.97 | |||||||||||
2018 | 38.29 | 43.23 | 47.53 | 60.42 | 67.73 | 80.03 | 83.03 | 80.16 | 72.97 | a | 56.37 | 40.28 | 34.47 | 58.71 | ||||||||||||
2019 | 32.43 | a | 35.38 | b | 48.53 | a | 57.95 | 59.15 | 73.93 | a | 81.67 | a | 80.39 | 72.24 | a | 53.23 | 44.69 | q | 33.23 | e | 57.10 | a | ||||
2020 | 31.53 | p | 42.17 | n | 49.95 | 56.97 | 69.80 | a | 75.98 | a | 82.05 | 83.48 | 70.90 | a | 60.34 | c | 46.79 | a | 31.08 | 62.73 | b | |||||
2021 | 33.05 | a | 39.96 | 47.11 | 58.02 | 66.77 | 78.75 | 82.09 | d | 78.34 | 70.37 | 54.95 | 47.18 | 37.55 | 57.85 | |||||||||||
2022 | 33.77 | 37.02 | 45.69 | 57.33 | 67.65 | 76.70 | 82.13 | 78.82 | a | 74.33 | 57.48 | 40.15 | 37.81 | 57.41 | ||||||||||||
2023 | 35.34 | 35.34 | 43.42 | 54.27 | 65.70 | c | 72.12 | 83.47 | 79.18 | 70.42 | 59.02 | 45.52 | 37.42 | 56.77 | ||||||||||||
2024 | 35.16 | 41.69 | 46.57 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.14 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.32 | 38.25 | 46.07 | 54.58 | 64.52 | 74.70 | 79.84 | 77.03 | 69.06 | 56.37 | 43.13 | 32.77 | 55.66 | |||||||||||||
S.D. | 4.64 | 3.49 | 3.05 | 3.20 | 3.56 | 2.98 | 2.62 | 2.53 | 2.77 | 3.04 | 3.01 | 3.88 | 1.63 | |||||||||||||
SKEW | -0.42 | -0.22 | -0.02 | 0.01 | 0.30 | -0.20 | -0.01 | 0.27 | -0.42 | -0.13 | 0.14 | -1.20 | -0.56 | |||||||||||||
MAX | 38.42 | 44.86 | 52.39 | 60.76 | 72.35 | 80.03 | 85.61 | 83.48 | 74.33 | 63.10 | 50.95 | 38.60 | 58.71 | |||||||||||||
MIN | 21.37 | 30.36 | 40.11 | 48.03 | 58.23 | 67.93 | 72.24 | 70.52 | 61.47 | 49.71 | 37.16 | 22.39 | 50.69 | |||||||||||||
YRS | 49 | 50 | 56 | 51 | 50 | 53 | 49 | 51 | 51 | 52 | 49 | 48 | 33 |