YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.07 | 76.90 | 77.07 | a | 67.88 | a | 51.37 | d | 46.30 | ----- | z | 63.76 | f | |||
1968 | 35.04 | c | 42.11 | f | 44.96 | e | 47.96 | f | 58.37 | 68.50 | 77.43 | d | 68.23 | a | 64.62 | b | 54.25 | c | 43.83 | 35.44 | d | 55.07 | b | |||
1969 | 37.88 | b | 36.11 | a | 40.62 | e | 49.72 | 62.53 | a | 65.07 | a | 75.45 | 74.68 | a | 69.30 | c | 49.65 | 43.67 | 39.88 | c | 53.71 | |||||
1970 | 38.08 | a | 41.31 | a | 42.36 | b | 46.30 | c | 58.32 | a | 65.29 | a | ----- | z | 74.66 | 61.93 | 51.77 | 45.80 | 35.23 | a | 51.01 | a | ||||
1971 | 38.21 | b | 39.73 | b | 41.73 | a | 48.36 | b | 53.31 | d | 64.02 | a | 75.15 | 76.32 | a | 63.33 | 50.29 | b | 42.29 | b | 32.11 | 52.07 | ||||
1972 | 32.67 | a | 40.02 | c | 49.63 | 49.81 | a | 60.89 | d | 69.70 | 77.13 | 73.66 | b | 63.50 | ----- | z | ----- | z | ----- | z | 57.44 | c | ||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.35 | 44.07 | a | 40.24 | 46.56 | i | ||
1974 | ----- | z | ----- | z | 44.76 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.76 | k |
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 | 77.03 | b | 62.50 | 50.66 | ----- | z | ----- | z | 63.40 | i | ||
1978 | ----- | z | ----- | z | 47.61 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | 36.12 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | r | 69.73 | 59.21 | 42.60 | 38.98 | 52.63 | h | ||||
1980 | 38.24 | 42.74 | d | 41.94 | 51.45 | a | 56.95 | 62.57 | a | 74.52 | 73.03 | a | 64.95 | 56.19 | 47.79 | f | 39.77 | c | 54.76 | a | ||||||
1981 | 40.03 | b | 40.96 | 45.30 | a | 53.87 | 59.26 | 70.57 | 74.53 | 77.71 | 70.38 | a | 52.65 | 47.60 | 42.65 | 56.29 | ||||||||||
1982 | 33.02 | a | 40.54 | a | 42.86 | c | 47.22 | c | 59.40 | 67.17 | 73.44 | 75.00 | 61.98 | 52.58 | 40.68 | 37.00 | a | 52.57 | ||||||||
1983 | 38.02 | a | 42.00 | a | 43.64 | c | 45.41 | a | 58.16 | 66.13 | 70.24 | 72.97 | 66.30 | 56.16 | 44.29 | b | 39.35 | a | 53.56 | |||||||
1984 | 32.69 | 37.76 | b | 45.45 | c | 48.24 | a | 60.32 | 64.92 | 77.06 | 74.18 | 65.60 | a | 48.20 | i | 41.00 | i | 32.83 | j | 56.25 | c | |||||
1985 | 30.20 | i | 36.14 | g | 38.77 | i | 50.98 | i | 56.86 | f | 70.68 | 77.44 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.06 | j | ||
1986 | ----- | z | ----- | z | ----- | z | 50.23 | 60.05 | c | 71.71 | b | 73.92 | 78.46 | d | 60.29 | b | 54.67 | a | 47.53 | 38.18 | 59.45 | c | ||||
1987 | 33.85 | 40.81 | a | 45.09 | b | 55.79 | b | 62.02 | c | 69.30 | g | 71.27 | c | 75.78 | a | 69.00 | a | 60.84 | 45.78 | 37.32 | a | 54.32 | a | |||
1988 | 34.32 | a | 39.76 | 45.03 | b | 53.15 | 59.02 | a | 68.80 | 79.24 | 77.10 | a | 68.08 | 61.79 | 46.03 | 35.19 | 55.63 | |||||||||
1989 | 31.61 | 31.25 | 47.80 | a | 56.25 | b | 58.42 | 70.25 | 77.70 | a | 72.00 | 66.02 | b | 55.07 | a | 45.22 | a | 38.07 | a | 54.14 | ||||||
1990 | 36.73 | 33.64 | 46.52 | 56.55 | 58.13 | a | 67.67 | 77.37 | 74.62 | a | 69.14 | a | 58.68 | 45.40 | d | 27.47 | 54.33 | |||||||||
1991 | ----- | z | 44.16 | 41.87 | 48.37 | 54.21 | 65.53 | 77.29 | b | 75.19 | b | 69.23 | 60.17 | a | 46.80 | 39.40 | 56.57 | a | ||||||||
1992 | 37.42 | a | 44.14 | a | 48.83 | b | 57.73 | 67.08 | a | 70.07 | a | 74.68 | 77.24 | 68.48 | a | 59.50 | b | 43.71 | a | 35.02 | 56.99 | |||||
1993 | 31.60 | 36.02 | 49.98 | 50.66 | b | 60.65 | 64.57 | 71.27 | 72.50 | 67.52 | 57.13 | 41.77 | 38.23 | 53.49 | ||||||||||||
1994 | 38.25 | a | 38.86 | 48.26 | 53.36 | a | 61.65 | a | 69.62 | a | 79.33 | a | 76.58 | a | 68.55 | 55.09 | c | 37.28 | a | 36.24 | d | 55.26 | ||||
1995 | 40.56 | e | 45.68 | c | 44.91 | b | 49.21 | b | 56.58 | a | 64.10 | 73.78 | b | 74.67 | b | 69.88 | b | 57.00 | d | 51.65 | c | 43.34 | 55.95 | |||
1996 | 40.95 | a | 41.98 | 45.41 | b | 52.41 | a | 59.50 | b | 69.50 | f | 79.00 | c | 75.45 | c | 66.13 | 54.09 | c | 45.80 | 41.82 | 54.78 | a | ||||
1997 | 36.76 | b | 40.48 | a | 49.42 | a | 51.31 | a | 64.32 | a | 67.21 | d | 73.19 | b | 75.98 | c | 67.47 | 54.76 | b | 47.68 | b | 35.98 | b | 55.38 | ||
1998 | 41.91 | b | 40.12 | 45.26 | 48.43 | a | 53.02 | 64.10 | d | 78.29 | b | 77.21 | c | 67.65 | f | 53.78 | b | 45.44 | c | 34.41 | d | 52.91 | a | |||
1999 | 38.18 | a | 40.48 | d | 44.20 | d | 47.33 | d | 57.98 | 67.78 | c | 74.82 | f | 72.12 | c | 67.38 | d | 58.85 | 50.25 | b | 38.67 | b | 53.02 | a | ||
2000 | 40.94 | 43.50 | c | 49.67 | a | 59.39 | c | 61.78 | o | 71.79 | b | 74.41 | b | 75.62 | f | 64.96 | f | 55.61 | h | 39.96 | f | 39.92 | m | 56.62 | f | |
2001 | 35.10 | j | 36.89 | e | 47.65 | h | 48.00 | g | 66.19 | j | 70.08 | f | 74.17 | j | 77.83 | g | 68.86 | s | 59.67 | j | 46.72 | l | 38.61 | q | 36.89 | k |
2002 | 35.95 | t | 40.78 | l | 43.17 | m | 52.32 | e | 58.04 | h | 71.09 | m | 78.72 | k | 73.97 | n | 67.67 | j | 53.55 | a | 44.46 | b | 40.83 | e | 47.79 | h |
2003 | 43.43 | a | 38.64 | 46.48 | c | 47.25 | 59.21 | 71.87 | 79.17 | a | 74.40 | a | 69.35 | 61.62 | a | 41.81 | c | 39.02 | d | 56.02 | ||||||
2004 | 36.96 | g | 39.24 | d | 49.72 | a | 53.13 | 59.60 | a | 70.00 | 77.97 | a | 74.37 | a | 66.55 | 54.85 | a | 41.79 | a | 36.06 | e | 56.66 | a | |||
2005 | 32.61 | d | 38.04 | a | 45.66 | 48.96 | b | 58.37 | 63.98 | b | 79.33 | a | 76.88 | e | 63.48 | c | 55.90 | b | 45.26 | c | 39.78 | f | 55.32 | a | ||
2006 | 38.63 | e | 38.26 | c | 37.67 | j | 48.98 | i | 61.12 | b | 70.47 | a | 79.25 | a | 74.36 | f | 69.30 | j | 53.47 | b | 45.61 | b | 35.75 | c | 52.82 | d |
2007 | 31.52 | j | 39.68 | n | 47.81 | b | 52.93 | c | 62.32 | c | 70.66 | b | 78.85 | k | 76.22 | d | 63.76 | c | 53.43 | c | 46.28 | c | 35.19 | j | 59.18 | d |
2008 | 32.48 | g | 38.72 | f | 44.30 | f | 48.54 | f | 56.46 | g | 69.72 | l | 77.27 | c | 77.97 | 68.62 | e | 56.69 | e | 48.12 | f | 36.79 | g | 70.14 | h | |
2009 | 37.05 | i | 41.48 | 42.55 | 49.40 | 63.77 | 65.45 | 77.66 | 74.70 | c | 71.78 | 52.74 | 45.13 | 29.90 | 55.87 | a | ||||||||||
2010 | 38.06 | 39.93 | 43.77 | 46.03 | 51.63 | 66.78 | 76.65 | a | 72.92 | 66.53 | 56.63 | 42.63 | 41.41 | b | 53.58 | |||||||||||
2011 | 35.65 | 35.89 | a | 43.85 | 47.22 | a | 53.18 | 64.18 | 73.95 | 74.98 | 70.13 | 56.85 | 43.40 | 35.27 | 52.88 | |||||||||||
2012 | 38.05 | 38.71 | 45.85 | 52.70 | 60.56 | 67.58 | 76.15 | 78.66 | 71.10 | 58.65 | 48.18 | 38.21 | 56.20 | |||||||||||||
2013 | 28.56 | 37.59 | 46.77 | 51.62 | 59.97 | 70.35 | 79.32 | 74.05 | 67.03 | 51.47 | 45.03 | 30.19 | 53.50 | |||||||||||||
2014 | 37.87 | 43.23 | 46.61 | 52.73 | 61.45 | 69.98 | 79.00 | 73.94 | 69.08 | 58.39 | 45.62 | a | 41.27 | 56.60 | ||||||||||||
2015 | 39.03 | 44.68 | 48.97 | 50.83 | 58.34 | 72.98 | 73.82 | 75.48 | 68.53 | 59.74 | 41.38 | 38.66 | 56.04 | |||||||||||||
2016 | 37.85 | 41.38 | 47.10 | 53.63 | 58.31 | 71.67 | 76.16 | b | 77.17 | b | 67.73 | 56.27 | 47.82 | 36.32 | 55.95 | |||||||||||
2017 | 34.24 | 42.20 | 47.00 | 50.03 | 61.44 | 70.40 | 78.87 | a | 77.73 | 66.70 | 53.18 | 48.65 | 36.42 | 55.57 | ||||||||||||
2018 | 41.65 | 37.21 | 41.90 | 51.33 | 60.31 | 69.30 | 79.84 | 76.34 | 67.77 | 54.60 | 44.43 | 37.16 | 55.15 | |||||||||||||
2019 | 38.00 | 35.62 | 42.10 | 53.62 | 56.52 | 68.30 | 74.85 | 75.40 | 64.75 | 50.23 | 44.63 | 38.42 | 53.54 | |||||||||||||
2020 | 40.03 | 39.47 | 42.87 | 52.58 | 59.63 | e | 67.84 | a | 77.23 | 78.18 | 69.82 | 66.50 | y | 43.87 | 37.85 | 55.40 | a | |||||||||
2021 | 38.29 | 39.34 | 42.53 | 53.42 | 62.78 | d | 74.58 | 81.90 | 75.90 | 68.44 | m | 53.58 | 46.87 | d | 37.77 | 55.18 | a | |||||||||
2022 | 38.21 | 37.98 | 46.73 | 50.10 | 57.34 | 69.60 | 79.66 | 78.00 | 70.72 | 58.61 | 39.22 | 36.93 | d | 55.26 | ||||||||||||
2023 | 31.30 | p | 36.89 | 39.68 | 50.58 | 59.39 | 64.64 | s | 78.43 | q | 74.89 | 65.37 | 56.16 | 44.87 | 40.08 | 51.99 | c | |||||||||
2024 | 40.27 | 40.95 | 44.24 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.82 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.19 | 39.67 | 45.28 | 51.16 | 59.21 | 68.11 | 76.55 | 75.38 | 67.07 | 55.49 | 44.85 | 37.38 | 54.79 | |||||||||||||
S.D. | 3.26 | 2.95 | 2.68 | 3.17 | 3.06 | 2.96 | 2.60 | 2.06 | 2.73 | 3.13 | 2.71 | 3.27 | 1.38 | |||||||||||||
SKEW | -0.57 | -0.37 | 0.03 | 0.40 | -0.31 | -0.08 | -0.45 | -0.86 | -0.55 | 0.13 | -0.22 | -0.89 | -0.28 | |||||||||||||
MAX | 43.43 | 45.68 | 49.98 | 59.39 | 67.08 | 74.58 | 81.90 | 78.66 | 71.78 | 61.79 | 51.65 | 43.34 | 56.99 | |||||||||||||
MIN | 28.56 | 31.25 | 39.68 | 45.41 | 51.63 | 62.57 | 70.24 | 68.23 | 60.29 | 49.65 | 37.28 | 27.47 | 52.07 | |||||||||||||
YRS | 40 | 44 | 45 | 44 | 44 | 44 | 44 | 46 | 45 | 47 | 45 | 43 | 25 |