YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.05 | u | 35.24 | c | 24.33 | e | 29.78 | j |
1952 | 24.31 | 30.44 | c | 31.47 | a | 47.14 | i | 53.05 | 57.98 | c | 69.50 | d | 65.75 | e | 61.80 | h | 54.41 | t | ----- | z | ----- | z | 47.50 | e | ||
1953 | 37.62 | e | 33.12 | 36.00 | b | 41.98 | d | 44.43 | a | 55.50 | f | 67.16 | b | 64.03 | a | 60.42 | 45.87 | 39.88 | e | 30.14 | b | 45.51 | a | |||
1954 | 30.58 | f | 37.07 | a | 33.98 | f | 46.37 | c | 54.81 | b | 58.20 | b | 68.15 | a | 59.94 | f | 53.27 | b | 43.89 | d | 38.15 | 23.23 | i | 49.99 | d | |
1955 | 15.78 | m | ----- | z | 35.29 | g | 38.25 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.11 | p | 46.61 | 36.29 | d | 23.78 | o | 41.45 | j | |
1960 | 25.82 | c | 30.47 | l | 40.73 | 44.13 | g | 48.46 | d | 63.28 | 68.89 | i | 60.65 | h | 57.76 | m | 46.75 | i | ----- | z | 27.14 | q | 44.57 | h | ||
1961 | 26.19 | r | 36.47 | l | 37.54 | q | 41.62 | 49.50 | a | 64.66 | h | 67.80 | a | 68.40 | 52.55 | 43.72 | b | 29.29 | a | 24.21 | q | 50.41 | e | |||
1962 | 19.64 | i | 31.79 | g | 33.19 | 47.13 | 47.61 | 58.18 | 65.60 | g | 63.79 | c | 59.16 | a | 47.77 | a | 37.64 | b | 34.14 | j | 49.31 | d | ||||
1963 | 24.10 | 40.27 | 35.32 | 37.52 | 52.95 | a | 55.47 | 62.56 | d | 63.41 | b | 59.25 | 48.11 | 35.31 | a | 27.78 | b | 45.17 | ||||||||
1964 | 26.03 | 29.22 | 32.73 | 39.43 | 46.26 | 54.48 | 65.95 | 62.89 | 52.67 | 47.56 | 31.43 | a | 30.85 | 43.29 | ||||||||||||
1965 | 29.05 | 33.81 | a | 33.82 | 44.46 | e | 47.52 | d | 55.39 | c | 64.60 | g | 61.08 | a | 49.75 | 46.50 | 36.33 | d | 22.75 | a | 41.86 | a | ||||
1966 | 25.04 | c | 25.17 | d | 33.69 | e | 42.81 | f | 57.14 | c | 59.35 | c | 64.39 | c | 67.29 | c | 58.79 | b | 45.67 | e | 38.46 | e | 30.29 | 45.93 | a | |
1967 | 31.23 | 35.36 | 34.77 | a | 34.81 | c | 52.09 | b | 58.78 | c | 69.88 | b | 69.76 | 60.45 | b | 47.14 | b | 37.72 | a | 25.45 | 46.45 | |||||
1968 | 26.71 | 37.20 | a | 38.88 | c | 41.54 | d | 50.72 | b | 61.83 | c | 68.50 | d | 60.83 | a | 56.19 | c | 45.07 | a | 36.78 | a | 28.78 | b | 46.08 | ||
1969 | 31.42 | a | 30.24 | a | 34.36 | b | 44.19 | a | 56.00 | e | 59.17 | 67.24 | d | 65.92 | a | 58.80 | b | 40.37 | a | 35.20 | 32.05 | b | 46.25 | |||
1970 | 31.34 | f | 36.21 | 36.81 | b | 37.26 | c | 51.87 | a | 63.64 | h | 67.69 | d | 66.24 | b | 52.55 | a | 40.77 | a | 38.79 | m | 26.92 | e | 46.26 | c | |
1971 | 34.05 | b | 33.81 | a | 33.68 | ----- | z | 50.02 | c | 57.62 | a | 66.64 | q | 69.27 | c | 52.12 | a | 41.91 | b | 35.16 | e | 23.36 | b | 43.10 | b | |
1972 | 26.00 | h | 32.81 | b | 43.06 | e | 41.28 | g | 53.63 | e | 62.70 | h | 67.81 | d | 66.27 | e | 53.87 | c | 44.07 | b | 34.15 | c | 21.40 | f | 49.46 | d |
1973 | 26.69 | d | 34.45 | f | 35.60 | f | 44.48 | a | 55.66 | b | 61.00 | f | 67.88 | e | 64.70 | c | 56.80 | h | 44.93 | c | 36.85 | c | 34.28 | f | 48.74 | e |
1974 | 27.12 | a | 32.63 | b | 39.98 | f | 42.44 | f | 52.02 | g | 62.72 | u | 66.13 | e | 63.90 | p | ----- | z | ----- | z | ----- | z | 25.72 | m | 41.96 | i |
1975 | 27.02 | b | 30.70 | e | 35.75 | a | 37.18 | b | 50.88 | c | 56.54 | g | 68.70 | a | 63.00 | f | 58.23 | b | 43.31 | m | 31.18 | e | 32.10 | f | 42.45 | d |
1976 | 29.86 | c | 32.12 | c | 33.00 | 40.90 | d | 54.97 | b | 58.22 | a | 68.65 | d | 60.27 | a | 57.73 | b | 45.81 | b | 38.90 | e | 28.30 | c | 45.73 | ||
1977 | 20.74 | 33.61 | f | 31.90 | b | 46.93 | g | 47.52 | d | 66.30 | c | 67.67 | e | 66.87 | d | 55.59 | a | 46.16 | f | 35.98 | e | 33.40 | j | 49.07 | d | |
1978 | 33.65 | e | 34.41 | 43.38 | c | 43.64 | a | 48.59 | d | 58.10 | i | 67.38 | e | 64.98 | d | 53.50 | e | 47.48 | e | 31.10 | d | 22.48 | a | 44.60 | a | |
1979 | 21.86 | b | 32.35 | b | 39.77 | c | 43.68 | b | 53.88 | b | 59.90 | a | 69.35 | g | 66.39 | d | ----- | z | ----- | z | ----- | z | 34.25 | s | 45.40 | e |
1980 | 32.43 | i | 38.13 | j | 35.88 | s | 47.30 | o | 53.73 | i | 55.52 | j | 66.79 | q | 63.00 | r | 56.57 | o | 46.55 | j | 44.64 | w | 32.44 | o | ----- | z |
1981 | 28.55 | j | 33.75 | l | 37.47 | n | 50.46 | p | 50.80 | i | 59.88 | m | 66.21 | j | 66.89 | c | 60.15 | f | 42.98 | i | 36.52 | j | 35.04 | e | 50.97 | j |
1982 | 29.02 | c | 29.20 | f | 35.67 | b | 39.58 | d | 50.62 | c | 58.55 | a | ----- | z | 69.06 | m | ----- | z | ----- | z | ----- | z | 25.77 | i | 42.69 | g |
1983 | 31.31 | d | 36.02 | a | 38.63 | d | 39.48 | b | 50.32 | a | 57.59 | g | 62.31 | b | 64.98 | d | 56.30 | b | 47.62 | c | 37.08 | e | ----- | z | 46.41 | b |
1984 | 29.91 | t | 30.82 | g | 39.27 | c | 41.52 | h | 52.04 | c | 54.48 | c | 69.43 | i | 66.97 | l | 54.15 | f | 41.69 | e | 34.48 | g | 21.73 | k | 46.87 | h |
1985 | 23.35 | e | 29.10 | g | 34.38 | g | 47.91 | b | 51.00 | o | 61.44 | f | 70.44 | g | 61.98 | d | 48.59 | h | 43.15 | n | 26.63 | o | 25.90 | k | 44.41 | i |
1986 | 35.39 | h | 37.79 | b | 40.50 | j | 43.88 | i | 51.48 | j | 64.73 | 64.18 | 69.10 | 47.57 | g | ----- | z | 39.77 | o | 26.39 | l | 58.95 | h | |||
1987 | 25.33 | h | 32.14 | f | 37.13 | e | 47.04 | q | 55.29 | j | 62.75 | d | 64.87 | h | 65.83 | h | 58.60 | i | 49.70 | i | 33.82 | h | ----- | z | 49.94 | j |
1988 | 25.13 | h | 34.20 | d | 37.90 | k | 46.98 | i | 48.28 | o | 63.04 | q | 69.84 | l | 65.62 | e | 54.00 | h | 51.82 | 35.34 | h | 22.79 | g | 50.55 | i | |
1989 | 24.08 | e | 24.92 | d | 36.14 | x | 46.53 | m | 50.25 | u | 62.00 | v | 70.85 | u | 61.30 | p | 55.07 | g | 44.48 | c | 34.27 | h | 28.52 | c | 30.50 | h |
1990 | 30.23 | i | 26.80 | e | 39.68 | f | 48.91 | g | 48.88 | j | 60.09 | c | 67.32 | i | 64.65 | g | 60.43 | h | 44.52 | k | 33.56 | f | 16.57 | i | 43.45 | j |
1991 | 26.26 | b | 35.74 | i | 36.15 | d | 41.42 | l | 47.62 | j | 56.17 | l | 66.71 | l | 66.77 | g | 58.30 | g | 48.46 | c | 39.24 | m | 28.97 | n | 36.96 | i |
1992 | 26.82 | k | 38.56 | l | 40.54 | f | 48.75 | h | 58.50 | f | 61.43 | b | 65.80 | c | 67.26 | d | 56.75 | h | 47.31 | m | 33.17 | j | 23.07 | h | 64.83 | i |
1993 | 20.88 | j | 22.69 | g | 42.87 | h | 44.29 | k | 55.02 | f | 54.55 | s | 60.20 | h | 62.11 | d | 54.00 | h | 47.09 | h | 31.95 | k | 31.74 | h | 62.11 | k |
1994 | 32.19 | g | 27.77 | h | 41.19 | j | 46.28 | n | 54.11 | h | 60.92 | l | 70.64 | i | 66.44 | f | 57.07 | h | 46.85 | u | 26.50 | p | 22.88 | k | ----- | z |
1995 | 30.48 | i | 40.17 | e | 37.84 | o | ----- | z | 52.80 | p | 55.75 | p | 65.32 | t | 64.59 | n | 59.18 | p | 46.29 | q | 34.50 | y | 41.88 | w | 40.17 | k |
1996 | 27.68 | t | 34.29 | q | 40.22 | v | 44.50 | o | 50.64 | q | 59.75 | n | 71.20 | p | 64.90 | p | 54.57 | o | 48.35 | n | 39.00 | q | 31.32 | q | ----- | z |
1997 | 27.90 | p | 31.04 | n | 41.14 | m | 42.24 | m | 56.18 | l | 60.93 | p | 67.90 | k | 65.71 | b | 58.70 | e | 45.87 | e | ----- | z | ----- | z | 56.76 | i |
1998 | ----- | z | 33.56 | d | ----- | z | 43.64 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.30 | j | 26.59 | i | 33.56 | k |
1999 | 31.43 | b | 32.34 | f | 37.79 | j | 39.73 | h | 49.30 | p | 54.65 | t | 63.40 | u | ----- | z | 55.85 | t | 49.50 | r | 35.75 | r | ----- | z | 31.43 | k |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.16 | 34.84 | k | 29.20 | a | 39.18 | j | |
2002 | ----- | z | 34.21 | g | 37.84 | f | 46.08 | 54.25 | e | 64.38 | 74.00 | c | 65.24 | b | 58.20 | 44.18 | 35.70 | 32.52 | 52.73 | c | ||||||
2003 | 37.92 | 30.20 | a | 41.37 | 41.42 | 54.17 | d | 65.28 | 73.52 | g | 68.54 | c | 60.56 | c | 53.00 | d | 32.18 | 33.05 | 47.06 | a | ||||||
2004 | 31.56 | 33.09 | 44.47 | 46.75 | 53.44 | 62.82 | h | 71.35 | g | 68.52 | d | 58.13 | c | 48.25 | m | 34.02 | j | 31.08 | f | 47.99 | e | |||||
2005 | 24.59 | d | 32.86 | f | 40.62 | e | 43.24 | m | 54.08 | f | 57.77 | h | 72.18 | 68.67 | j | 54.15 | c | 46.40 | 36.05 | 27.80 | d | 43.11 | e | |||
2006 | 31.92 | s | 35.25 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.63 | c | 45.35 | 39.70 | o | ----- | z | 50.99 | j | |
2007 | ----- | z | ----- | z | 41.08 | y | 44.13 | 55.71 | 63.58 | 74.83 | b | 69.24 | l | 55.77 | 44.84 | b | 37.28 | 25.26 | 50.18 | d | ||||||
2008 | 26.13 | e | 32.19 | 35.84 | 42.74 | i | 52.43 | h | 63.78 | g | 71.42 | 69.08 | 57.58 | 46.80 | a | 40.58 | 27.12 | b | 45.19 | c | ||||||
2009 | 34.00 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.14 | 33.07 | 36.84 | 42.24 | 51.66 | 59.98 | 67.91 | 65.59 | 56.33 | 45.90 | 35.77 | 28.19 | 45.50 | |||||||||||||
S.D. | 4.38 | 3.85 | 3.63 | 3.59 | 3.24 | 3.44 | 3.05 | 2.63 | 2.99 | 2.79 | 2.81 | 3.47 | 1.17 | |||||||||||||
SKEW | 0.57 | -0.25 | 0.51 | -0.28 | -0.34 | 0.16 | 0.36 | -0.34 | -0.39 | 0.27 | -0.61 | 0.06 | -1.26 | |||||||||||||
MAX | 37.92 | 40.27 | 44.47 | 47.91 | 57.14 | 66.30 | 74.83 | 69.76 | 60.56 | 53.00 | 40.58 | 35.04 | 46.45 | |||||||||||||
MIN | 20.74 | 24.92 | 31.47 | 34.81 | 44.43 | 54.48 | 62.31 | 60.27 | 49.75 | 40.37 | 29.29 | 22.48 | 43.29 | |||||||||||||
YRS | 28 | 28 | 28 | 23 | 29 | 24 | 25 | 31 | 27 | 31 | 26 | 21 | 6 |