YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | 38.76 | f | 46.33 | 53.92 | 58.30 | 68.05 | 64.52 | 60.35 | 47.10 | 39.09 | a | 35.43 | j | 54.71 | d | |||||||
1957 | ----- | z | ----- | z | 40.50 | j | 45.23 | f | 50.85 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | 45.33 | a | 59.88 | a | 61.18 | 68.79 | 69.94 | 59.42 | 52.32 | 42.37 | 43.13 | 55.82 | c | |||||||
1959 | 37.04 | c | 34.04 | 41.63 | a | 49.38 | 48.77 | 63.90 | 71.58 | 66.60 | 55.47 | 52.21 | 42.35 | 32.21 | g | 51.18 | a | |||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | 55.50 | h | 58.72 | 63.42 | 64.85 | 60.53 | a | 55.23 | k | 40.57 | a | 35.06 | 53.86 | f | ||||
1964 | 32.26 | 32.60 | 35.63 | 43.72 | 50.71 | 58.67 | a | 68.63 | 66.13 | 57.33 | 52.76 | 35.87 | 33.37 | 47.31 | ||||||||||||
1965 | 32.26 | 36.98 | 38.71 | 46.30 | 50.84 | 60.05 | 66.82 | 63.94 | 53.63 | 52.79 | 40.37 | 30.94 | 47.80 | |||||||||||||
1966 | 31.58 | 31.52 | 39.53 | 48.52 | d | 57.73 | 58.88 | 65.55 | 67.13 | 59.20 | 49.05 | 40.67 | 34.13 | 48.62 | ||||||||||||
1967 | 34.32 | 37.27 | 37.08 | 36.75 | 53.29 | 60.22 | 70.98 | 71.40 | 62.62 | 51.18 | a | 42.80 | 27.73 | 48.80 | ||||||||||||
1968 | 31.68 | 40.41 | a | 42.85 | a | 45.15 | 53.33 | a | 63.97 | 73.29 | 63.77 | 60.58 | 50.76 | 37.95 | 30.63 | 49.53 | ||||||||||
1969 | 31.35 | a | 30.31 | a | 34.82 | a | 45.67 | a | 57.69 | 62.02 | 69.85 | 69.45 | a | 63.30 | 44.69 | 41.88 | 35.85 | 48.91 | ||||||||
1970 | 33.85 | 40.16 | 39.20 | i | 40.62 | 55.27 | 63.95 | 72.03 | 70.74 | 56.63 | d | 48.21 | 40.78 | 27.02 | 49.93 | a | ||||||||||
1971 | 35.21 | e | 36.29 | 32.67 | h | 44.62 | 51.69 | 58.83 | 71.94 | d | 73.68 | 55.82 | 46.16 | 38.68 | 27.81 | 49.16 | a | |||||||||
1972 | 29.06 | 35.14 | 45.92 | f | 43.33 | 56.69 | 63.94 | c | 70.85 | 70.98 | d | 56.45 | a | 48.66 | 37.28 | 27.00 | 49.04 | a | ||||||||
1973 | 28.97 | 36.77 | 37.87 | 46.38 | 60.29 | 65.12 | a | 71.85 | 72.52 | i | 61.53 | 50.74 | h | 37.85 | 36.60 | 48.32 | b | |||||||||
1974 | 29.52 | 35.66 | 39.45 | 45.30 | 54.18 | 68.30 | 70.54 | c | 69.81 | 64.85 | 51.68 | a | 42.16 | b | 32.50 | d | 50.33 | |||||||||
1975 | 33.03 | b | 33.17 | d | 37.15 | 38.95 | 53.24 | 60.83 | 72.10 | 66.71 | 64.07 | a | 49.18 | 37.52 | 37.55 | a | 48.62 | |||||||||
1976 | 35.65 | 35.84 | 35.94 | 44.65 | 58.06 | 60.10 | 71.52 | 63.82 | 64.24 | a | 52.40 | 44.98 | 36.02 | 50.27 | ||||||||||||
1977 | 26.42 | 39.62 | 36.87 | 51.05 | 48.10 | 67.78 | 70.53 | 71.81 | 59.78 | ----- | z | ----- | z | ----- | z | 52.44 | c | |||||||||
1978 | 34.42 | y | 41.36 | n | 47.76 | 44.82 | 52.46 | f | 60.64 | i | 69.45 | 66.75 | e | 55.54 | d | 54.75 | e | 35.86 | a | 27.80 | a | 50.34 | d | |||
1979 | 26.60 | 34.95 | 42.44 | 45.86 | a | 55.98 | 63.40 | a | 71.98 | 67.81 | 65.22 | 53.73 | 36.38 | 36.38 | a | 50.06 | ||||||||||
1980 | 33.45 | a | 41.19 | 38.81 | 48.39 | c | 53.80 | a | 58.63 | 71.32 | 67.33 | a | 61.93 | 52.26 | 41.82 | 38.35 | a | 50.61 | ||||||||
1981 | 35.23 | 35.50 | 40.72 | a | 48.30 | 54.47 | 63.05 | 70.02 | 72.12 | a | 61.23 | b | 45.79 | 40.70 | 36.38 | a | 50.29 | |||||||||
1982 | 29.21 | b | 33.65 | a | 38.10 | a | 41.00 | a | 52.16 | c | 61.52 | c | 67.36 | b | 68.48 | a | 54.13 | c | 46.81 | w | 33.33 | 28.88 | k | 47.89 | b | |
1983 | 35.28 | a | 36.69 | a | 40.30 | a | 41.10 | 52.97 | b | 60.28 | a | 66.85 | a | 69.81 | m | 60.34 | b | 51.18 | a | 38.59 | c | 36.92 | y | 48.36 | b | |
1984 | 32.53 | ----- | z | ----- | z | 43.83 | 55.69 | 59.43 | a | 72.26 | 70.79 | 60.03 | a | 43.83 | g | ----- | z | ----- | z | 56.37 | e | |||||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.72 | e | 73.22 | b | 65.62 | e | 52.53 | a | 45.79 | e | ----- | z | 31.07 | d | 55.49 | f |
1986 | 40.22 | b | 38.90 | c | ----- | z | ----- | z | 64.87 | p | 67.50 | 66.16 | ----- | z | ----- | z | 49.60 | p | 41.94 | e | 35.08 | a | 48.30 | f | ||
1987 | 30.88 | g | 37.50 | e | 41.81 | b | 54.65 | f | 58.53 | b | 65.41 | h | 66.10 | f | 70.31 | e | 65.63 | d | 57.29 | e | 40.95 | b | 30.43 | b | 50.31 | d |
1988 | 31.98 | h | 40.08 | c | 43.26 | b | 51.32 | e | 55.39 | d | 66.14 | a | 73.35 | d | 69.45 | 62.16 | b | 59.26 | 39.27 | b | 31.22 | a | 53.72 | a | ||
1989 | 26.85 | a | 23.54 | 43.22 | a | 51.43 | b | 54.09 | h | 64.94 | f | 71.63 | 65.74 | d | 60.42 | e | 50.46 | c | 40.87 | c | 35.09 | b | 46.92 | b | ||
1990 | 34.06 | f | 30.52 | f | 48.81 | d | 53.57 | c | 52.82 | a | 61.30 | b | 70.81 | d | 70.24 | d | 62.93 | c | 48.66 | c | 30.02 | b | 22.42 | f | 55.46 | c |
1991 | 33.86 | b | ----- | z | ----- | z | 44.08 | d | 48.43 | h | ----- | z | ----- | z | ----- | z | ----- | z | 52.16 | c | 40.67 | g | 34.18 | c | 41.07 | h |
1992 | 35.09 | b | ----- | z | 43.67 | a | 49.74 | e | ----- | z | 56.50 | k | 65.58 | l | 70.08 | m | 61.33 | j | 52.18 | f | 36.53 | k | 26.83 | m | 42.83 | i |
1993 | ----- | z | 26.53 | m | 41.24 | j | 43.29 | p | 57.00 | q | 55.77 | o | 61.60 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | 35.50 | j | 30.22 | l | 45.56 | m | 47.86 | p | 54.39 | q | 60.22 | l | 72.23 | r | 68.75 | q | 63.73 | q | 47.50 | r | 26.11 | u | 26.24 | l | ----- | z |
1995 | 34.06 | e | 45.57 | m | 38.43 | q | 44.71 | r | 53.56 | v | 56.95 | t | 65.95 | u | 67.25 | q | 61.69 | q | 49.50 | m | 43.93 | p | 34.92 | m | 34.06 | k |
1996 | 28.85 | u | 34.85 | l | 40.78 | o | 44.90 | o | 51.94 | w | ----- | z | ----- | z | ----- | z | ----- | z | 49.58 | r | 38.67 | r | 33.92 | r | ----- | z |
1997 | 31.11 | i | 34.56 | l | 40.55 | l | 42.58 | l | 60.96 | q | ----- | z | 69.31 | r | 69.36 | q | 60.21 | p | 50.63 | p | 44.25 | p | 33.12 | o | ----- | z |
1998 | 34.86 | q | 29.09 | a | 39.00 | a | 46.21 | i | 46.12 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.97 | m | 31.30 | i | 34.05 | j |
1999 | 33.46 | f | 29.50 | m | 39.50 | i | 40.77 | j | ----- | z | 59.63 | o | 69.12 | o | 67.41 | o | 60.40 | o | 53.22 | o | 44.34 | a | 34.44 | 39.39 | j | |
2000 | 33.75 | a | 37.45 | 39.93 | b | 50.07 | o | 53.12 | a | 64.39 | h | ----- | z | 67.26 | n | 59.95 | i | 49.11 | d | 34.02 | g | 35.28 | o | 42.67 | g | |
2001 | 32.23 | a | 32.48 | 41.34 | c | 42.10 | d | 59.31 | j | 59.92 | j | 68.05 | i | ----- | z | 60.61 | p | 56.54 | q | 38.27 | j | 31.48 | i | 37.04 | h | |
2002 | 30.57 | c | 35.48 | d | 37.36 | i | 51.40 | t | 49.69 | m | 62.02 | g | ----- | z | ----- | z | 62.13 | o | 46.36 | m | 40.95 | h | 37.08 | e | 34.38 | i |
2003 | 40.12 | g | 34.18 | 40.88 | b | 41.43 | b | 50.68 | i | 63.64 | e | ----- | z | ----- | z | 60.40 | j | 55.12 | g | 33.75 | f | 33.42 | f | 45.03 | h | |
2004 | 31.94 | 33.86 | k | 46.35 | e | 46.00 | o | 53.50 | d | 62.17 | g | 70.21 | g | 68.58 | f | 57.87 | g | 47.50 | h | 35.57 | i | 34.79 | e | 41.64 | h | |
2005 | 32.02 | d | 35.69 | d | 42.11 | d | 43.68 | e | 51.26 | d | 56.67 | c | 72.10 | b | ----- | z | 57.54 | p | 49.00 | m | 39.37 | c | 30.29 | b | 44.80 | c |
2006 | 32.28 | d | 32.34 | f | 33.34 | c | 39.74 | k | 57.13 | p | 64.63 | d | 74.28 | f | ----- | z | 64.20 | y | 49.21 | g | 38.88 | m | 29.94 | g | 43.42 | i |
2007 | 28.58 | g | 36.38 | c | 44.46 | e | 46.06 | d | 54.96 | h | 61.02 | e | ----- | z | 71.27 | r | 52.67 | o | 47.26 | j | 40.67 | c | 27.79 | e | 42.73 | f |
2008 | 27.02 | 33.90 | 37.47 | 44.27 | f | 56.04 | f | 60.44 | d | 71.89 | 69.54 | q | 61.36 | s | 52.42 | g | 43.02 | e | 29.12 | c | 43.26 | e | ||||
2009 | 33.47 | 34.60 | b | 36.84 | b | 43.97 | k | 55.50 | p | 60.71 | p | 71.37 | p | ----- | z | 65.10 | o | 45.03 | n | 38.66 | k | 27.52 | h | 34.97 | i | |
2010 | 36.69 | e | 35.28 | c | 37.14 | j | 40.78 | n | 44.12 | r | 61.12 | r | 69.61 | v | 69.38 | o | 61.28 | n | 52.18 | q | 35.63 | k | 35.02 | h | 35.99 | j |
2011 | 31.81 | d | 30.52 | 36.37 | 40.95 | j | 48.07 | p | ----- | z | 69.03 | p | 70.75 | w | 65.83 | o | 49.11 | m | 36.73 | d | 30.73 | c | 33.23 | g | ||
2012 | 34.09 | b | 32.73 | a | 37.52 | a | 47.72 | l | 55.69 | o | 60.82 | s | 72.71 | q | 72.65 | n | ----- | z | 51.58 | k | 41.50 | h | 30.50 | 33.71 | h | |
2013 | 25.50 | b | 33.26 | a | 41.60 | g | 44.26 | m | 53.53 | n | 65.42 | x | ----- | z | ----- | z | 60.38 | q | 45.59 | n | 36.71 | k | 27.83 | a | 28.86 | i |
2014 | 37.55 | b | 37.44 | a | 41.83 | k | 48.12 | m | 55.07 | q | 61.93 | o | 75.00 | m | 69.27 | r | ----- | z | ----- | z | ----- | z | 35.48 | 36.83 | i | |
2015 | 38.57 | a | 41.48 | e | 44.44 | n | 47.80 | o | 51.54 | q | 69.30 | o | 70.47 | o | 71.23 | t | 61.47 | m | 56.27 | p | 33.07 | h | 31.26 | d | 37.10 | i |
2016 | 30.32 | 40.07 | 41.13 | 50.68 | s | 51.83 | m | 64.79 | m | ----- | z | 70.88 | r | 62.00 | y | 47.17 | v | 39.32 | h | 27.30 | h | 37.17 | i | |||
2017 | 24.47 | 34.75 | b | 42.35 | a | 44.19 | l | 56.34 | l | ----- | z | 72.69 | w | 73.34 | o | 62.07 | p | 48.74 | n | 40.92 | k | 30.97 | b | 33.13 | h | |
2018 | 38.55 | c | 32.00 | 35.17 | b | 45.47 | n | 56.43 | q | 63.19 | q | 69.42 | y | 66.50 | y | 58.68 | p | 49.00 | k | 38.52 | j | 31.45 | 34.29 | h | ||
2019 | 33.20 | a | 27.70 | c | 36.58 | a | 48.05 | s | 57.21 | q | 65.67 | x | ----- | z | ----- | z | ----- | z | 45.00 | m | 39.57 | p | 33.32 | i | 32.49 | i |
2020 | 34.54 | g | 35.54 | e | 44.98 | g | 52.52 | h | 59.12 | o | 69.57 | o | 80.89 | q | 82.25 | y | ----- | z | ----- | z | ----- | z | ----- | z | 35.54 | k |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | s | 73.70 | i | 75.44 | o | 65.86 | p | 55.71 | s | 32.54 | q | 25.45 | i | ----- | z |
2023 | 30.31 | e | 31.03 | i | 30.02 | h | 41.50 | m | 56.12 | o | 59.86 | s | 73.81 | r | 71.86 | t | 60.00 | v | 49.91 | n | 38.29 | r | 39.23 | i | 30.31 | k |
2024 | 38.90 | k | 37.07 | g | 40.62 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.42 | 35.18 | 39.93 | 45.42 | 54.25 | 62.03 | 70.21 | 68.21 | 59.93 | 50.73 | 39.61 | 32.71 | 49.26 | |||||||||||||
S.D. | 3.57 | 3.65 | 3.57 | 3.77 | 3.04 | 2.99 | 2.46 | 2.82 | 3.61 | 3.42 | 3.14 | 3.75 | 1.08 | |||||||||||||
SKEW | -0.17 | -0.69 | 0.49 | 0.03 | 0.12 | 0.39 | -0.99 | -0.01 | -0.35 | 0.37 | -0.91 | 0.38 | -0.38 | |||||||||||||
MAX | 40.22 | 41.48 | 48.81 | 53.57 | 60.29 | 68.30 | 73.35 | 73.68 | 65.63 | 59.26 | 44.98 | 43.13 | 50.61 | |||||||||||||
MIN | 24.47 | 23.54 | 33.34 | 36.75 | 48.10 | 56.67 | 63.42 | 63.77 | 52.53 | 44.69 | 30.02 | 27.00 | 47.31 | |||||||||||||
YRS | 45 | 44 | 39 | 33 | 29 | 33 | 32 | 28 | 30 | 27 | 33 | 38 | 12 |