YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.68 | c | 41.68 | k |
1943 | 36.27 | t | 40.86 | 44.29 | 49.23 | 54.93 | c | 63.83 | f | 69.63 | l | 69.65 | h | 62.93 | b | 51.12 | e | 39.22 | c | 33.84 | f | 48.94 | e | |||
1944 | 27.79 | b | 34.00 | f | 37.58 | g | 44.00 | s | 51.14 | c | 56.86 | i | 69.46 | e | 69.77 | 62.77 | 53.50 | q | ----- | z | 31.72 | m | 56.19 | g | ||
1945 | 33.73 | a | 34.53 | k | 35.90 | b | 40.96 | f | 51.50 | o | 55.25 | f | 70.74 | d | 68.37 | l | 58.17 | l | 50.94 | 35.83 | 29.85 | e | 42.83 | f | ||
1946 | 30.22 | m | 28.35 | e | 38.28 | b | 49.10 | i | 51.56 | o | 63.30 | g | ----- | z | 68.48 | 63.93 | ----- | z | 33.18 | s | 34.55 | 46.72 | g | |||
1947 | 27.94 | 37.18 | 39.77 | e | ----- | z | 52.06 | o | 61.63 | k | 67.73 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.96 | i | ||
1948 | ----- | z | ----- | z | 34.81 | j | 45.33 | l | 49.73 | t | 62.89 | l | 69.00 | e | ----- | z | 64.94 | l | 54.33 | s | 33.14 | p | ----- | z | 69.00 | k |
1949 | ----- | z | 27.75 | t | 36.60 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | 40.26 | 48.68 | b | 51.14 | b | 61.34 | a | 70.23 | 66.61 | 59.33 | 55.39 | 41.39 | b | 35.00 | e | 52.94 | b | |||||
1951 | 32.50 | c | 35.18 | 38.50 | c | 46.03 | a | 52.42 | 57.61 | b | 73.03 | 69.23 | a | 62.17 | 52.29 | 41.00 | u | 35.67 | d | 50.42 | a | |||||
1952 | 35.54 | c | 31.00 | a | 35.27 | a | 45.73 | d | 55.15 | d | 59.87 | 67.03 | b | 67.77 | i | 60.75 | f | 49.47 | a | 35.44 | c | 30.79 | b | 44.53 | b | |
1953 | 33.48 | b | 30.59 | a | 39.71 | 45.41 | a | 48.48 | 64.22 | c | 72.52 | 69.08 | g | 60.52 | e | 48.94 | o | 39.67 | c | 27.97 | a | 46.26 | b | |||
1954 | 33.21 | g | 38.56 | a | 42.39 | 48.33 | i | 54.40 | a | 61.93 | b | 70.40 | a | 65.70 | h | 62.67 | c | 52.07 | c | 39.20 | e | 30.56 | d | 50.24 | c | |
1955 | 28.23 | e | 28.88 | d | 37.53 | a | 40.25 | f | 49.86 | c | 58.87 | g | 65.69 | e | 65.36 | i | 55.09 | g | 47.04 | d | 36.57 | 31.46 | g | 41.97 | e | |
1956 | 32.10 | j | 26.95 | h | 35.04 | f | 44.11 | k | 51.64 | c | 64.22 | g | 68.11 | c | 65.70 | k | 62.38 | d | 47.30 | h | 31.69 | d | 29.91 | i | 53.46 | h |
1957 | 37.31 | e | 42.33 | g | 42.82 | c | 44.85 | c | 49.57 | c | 65.96 | d | 71.71 | c | 68.35 | h | 60.04 | b | 50.81 | d | 33.36 | h | 32.62 | e | 50.63 | c |
1958 | 29.77 | e | 37.81 | b | 37.43 | a | 43.32 | e | 54.10 | k | 65.62 | i | 70.15 | d | 68.14 | i | 60.24 | i | 54.36 | c | 39.62 | d | 33.62 | g | 44.64 | e |
1959 | 33.90 | b | 34.36 | 37.40 | f | 48.78 | g | 51.79 | c | 65.92 | e | 70.80 | a | 66.52 | b | 61.25 | j | 47.60 | p | 40.81 | n | 35.24 | b | 51.22 | e | |
1960 | 30.75 | c | 32.22 | b | 40.90 | b | 44.04 | f | 51.93 | c | 64.07 | c | 69.74 | 68.87 | 61.15 | d | 48.57 | c | 38.54 | d | 26.00 | g | 50.67 | b | ||
1961 | 34.43 | c | 34.24 | c | 38.37 | l | 43.68 | e | 50.85 | e | 65.75 | b | 69.16 | 65.75 | c | 56.45 | j | 46.13 | 36.52 | a | 34.48 | d | 48.10 | b | ||
1962 | 33.24 | b | 39.00 | a | 35.83 | b | 48.81 | n | 51.50 | a | 60.21 | a | 70.26 | 70.55 | 65.55 | a | 50.97 | 43.72 | a | 37.19 | e | 50.73 | a | |||
1963 | 30.94 | 38.78 | a | 38.23 | a | 43.67 | 57.10 | b | 58.43 | 72.00 | 67.77 | 62.07 | a | 52.90 | a | 40.17 | a | 29.58 | e | 49.30 | ||||||
1964 | 24.20 | a | 26.04 | a | 36.00 | 44.80 | e | 49.55 | b | 60.70 | g | 68.23 | a | 64.45 | b | 58.44 | e | 48.93 | a | 31.71 | b | ----- | z | 45.24 | b | |
1965 | ----- | z | 32.33 | a | 35.52 | 43.10 | a | 47.50 | a | 55.61 | b | 69.61 | 68.00 | 59.57 | 48.20 | a | 44.78 | c | 37.24 | b | 49.22 | a | ||||
1966 | 30.23 | 31.04 | 39.62 | b | 44.00 | d | 52.87 | 61.40 | 69.07 | a | 67.77 | 61.07 | c | 46.77 | e | 38.24 | a | 28.96 | c | 47.59 | ||||||
1967 | 27.47 | a | 30.92 | c | 36.28 | b | 42.43 | b | 46.33 | a | 59.72 | e | 69.94 | 66.00 | 61.11 | b | 47.97 | 42.03 | a | 30.43 | h | 48.20 | a | |||
1968 | 33.21 | b | 41.46 | c | 41.40 | a | 43.34 | a | 49.43 | a | 62.83 | l | 68.25 | g | 63.13 | 57.44 | c | 47.36 | c | 35.62 | d | 25.82 | c | 43.82 | b | |
1969 | 35.57 | c | 30.81 | b | 32.86 | b | 43.48 | g | 53.21 | b | 55.66 | a | 72.16 | 69.19 | 60.37 | 43.48 | 38.41 | c | 32.92 | e | 47.69 | a | ||||
1970 | 29.61 | c | 36.38 | b | 39.38 | b | 39.79 | b | 53.53 | a | 62.34 | a | 72.67 | a | 70.43 | a | 61.10 | a | 44.45 | i | 38.23 | q | 34.35 | e | 49.96 | b |
1971 | 30.90 | a | 31.61 | e | 36.18 | i | 40.15 | j | 52.11 | d | 68.62 | n | 71.34 | b | 67.59 | d | 61.04 | c | 46.23 | a | 36.84 | e | 30.33 | j | 49.71 | d |
1972 | 27.68 | i | 32.78 | b | 43.41 | b | 42.17 | f | 51.19 | d | 63.19 | c | 71.14 | c | 68.55 | b | 62.20 | e | 53.92 | e | 36.18 | b | 33.33 | d | 51.59 | b |
1973 | 29.56 | m | 39.14 | g | 38.79 | b | 42.93 | a | 54.67 | a | 63.55 | a | 69.62 | e | 69.28 | b | 60.26 | c | 48.73 | e | 39.88 | f | 33.43 | h | 55.98 | d |
1974 | 34.63 | d | 30.22 | a | 44.19 | e | 45.89 | b | 55.36 | i | 66.71 | b | 69.52 | f | 69.00 | d | 62.50 | h | 54.15 | e | 39.19 | d | 28.93 | d | 45.88 | c |
1975 | 30.68 | f | 32.64 | c | 39.03 | b | 40.67 | f | 50.17 | h | 60.19 | c | 70.28 | f | 68.85 | d | 63.23 | h | 47.54 | g | 36.44 | e | 34.08 | f | 47.43 | g |
1976 | 30.68 | f | 40.68 | g | 38.00 | e | 45.25 | f | 54.07 | c | 59.43 | i | 70.04 | f | 66.96 | f | 61.52 | g | 48.18 | c | 39.22 | g | 32.17 | h | 46.75 | i |
1977 | 35.68 | c | 35.64 | c | 36.86 | c | 46.80 | e | 49.58 | e | 64.24 | a | 71.25 | g | 70.90 | 65.64 | b | 55.63 | d | 41.68 | e | 38.20 | k | 50.26 | b | |
1978 | 38.86 | j | 37.96 | a | 44.41 | d | 42.96 | d | 51.32 | c | 62.74 | c | 68.48 | d | 66.86 | c | 61.29 | f | 53.54 | e | 43.04 | b | 34.00 | h | 52.37 | c |
1979 | 34.96 | c | 34.48 | c | 36.80 | a | 41.54 | f | 51.28 | b | 59.88 | e | 68.93 | b | 65.24 | f | 62.41 | c | 51.31 | e | 34.93 | b | 33.62 | g | 48.33 | c |
1980 | 36.82 | c | 39.80 | d | 40.25 | c | 44.00 | d | 49.25 | g | 62.88 | d | 72.35 | e | 69.14 | b | 63.07 | c | 50.00 | a | 38.04 | d | 36.21 | g | 51.64 | b |
1981 | 39.29 | c | 36.78 | e | 40.04 | f | 47.40 | e | 54.74 | d | 68.00 | 72.39 | c | 69.75 | c | 63.16 | e | 49.90 | a | 41.04 | b | 36.00 | d | 52.59 | a | |
1982 | 33.80 | f | 38.81 | a | 40.20 | a | 48.83 | g | 53.90 | 59.10 | a | 69.81 | d | 69.81 | d | 63.69 | a | 45.12 | g | 41.69 | d | 35.31 | b | 52.48 | c | |
1983 | 31.95 | i | 37.42 | b | 40.48 | d | 39.21 | b | 50.53 | a | 59.21 | b | 69.34 | b | 66.55 | b | 65.80 | e | 52.11 | d | 39.92 | d | 37.50 | a | 50.74 | a |
1984 | 32.71 | 31.11 | a | 38.11 | c | 43.74 | c | 57.00 | 63.81 | c | 68.26 | 66.84 | 61.50 | 48.62 | b | 35.65 | g | 35.90 | b | 49.78 | a | |||||
1985 | 32.50 | e | 33.04 | b | 39.45 | b | 46.40 | 51.97 | 60.69 | a | 69.81 | 67.77 | 56.79 | b | 50.70 | a | 40.10 | a | 31.65 | e | 48.41 | |||||
1986 | 35.21 | b | 39.82 | 44.33 | d | 48.10 | a | 53.00 | i | 65.70 | c | 67.59 | b | 70.90 | b | 59.14 | b | 49.03 | 40.87 | 33.47 | a | 50.38 | a | |||
1987 | 30.00 | b | 35.69 | b | 38.74 | 48.48 | c | 52.66 | b | 63.37 | 66.59 | b | 67.39 | 59.93 | a | 54.61 | 37.60 | 32.47 | a | 48.96 | ||||||
1988 | 32.29 | 37.79 | 38.03 | ----- | z | 51.90 | a | 62.73 | 71.86 | b | 69.58 | 58.41 | a | 55.20 | a | 39.69 | a | 30.45 | b | 49.81 | a | |||||
1989 | 30.17 | a | 37.15 | b | 42.30 | a | 49.40 | 53.71 | 61.31 | d | 71.90 | b | 67.57 | h | 60.63 | c | 50.67 | d | 38.73 | 30.79 | c | 47.89 | a | |||
1990 | 30.48 | d | 31.20 | c | 40.67 | a | 48.21 | b | 53.50 | a | 67.13 | 70.18 | c | 64.27 | e | 63.10 | a | 48.48 | 38.45 | a | 32.83 | b | 49.04 | |||
1991 | 32.10 | b | 37.13 | e | 37.59 | b | 39.88 | f | 46.89 | c | 56.11 | c | 68.52 | b | 68.94 | 63.17 | a | 51.93 | c | 37.14 | a | 37.63 | a | 48.83 | a | |
1992 | 33.90 | a | 40.00 | a | 39.86 | b | 46.52 | c | 56.41 | d | 61.62 | a | 67.52 | f | 67.60 | f | 59.09 | h | 48.12 | f | 31.17 | f | 35.16 | 44.78 | e | |
1993 | 40.26 | 36.52 | c | 37.90 | 42.32 | e | 53.17 | a | 60.60 | 69.16 | 67.42 | e | 58.05 | h | 48.96 | c | 36.26 | c | 31.16 | 47.61 | a | |||||
1994 | 30.35 | 33.68 | c | 41.13 | a | 44.08 | f | 52.62 | e | 68.64 | b | 71.58 | 71.58 | 63.68 | b | 49.73 | a | 38.07 | a | 36.86 | c | 50.72 | a | |||
1995 | 36.52 | b | 41.36 | c | ----- | z | 40.73 | 49.24 | f | 56.16 | e | 68.57 | a | 71.38 | e | 65.26 | c | 47.64 | i | 43.63 | 33.41 | b | 50.78 | c | ||
1996 | 32.32 | 40.35 | c | 40.40 | a | 45.42 | f | 54.24 | f | 65.86 | b | 72.18 | c | 68.69 | e | 60.72 | a | 48.38 | b | 40.57 | 33.03 | 50.25 | b | |||
1997 | 34.74 | 33.38 | b | 42.03 | 44.60 | 57.48 | 60.87 | 67.37 | d | 70.43 | a | 65.68 | b | 47.29 | 39.50 | 31.30 | a | 49.56 | ||||||||
1998 | 33.24 | f | 35.82 | 38.48 | 39.17 | 48.59 | b | 58.37 | 70.57 | a | 68.97 | b | 61.89 | c | 47.93 | c | 38.76 | a | 29.66 | b | 48.93 | a | ||||
1999 | 31.17 | a | 32.11 | 39.39 | c | 41.00 | a | 51.81 | 61.59 | a | 69.62 | b | 66.21 | c | 61.79 | a | 46.39 | 39.31 | a | 27.87 | a | 47.35 | ||||
2000 | 31.57 | c | 33.89 | b | 37.97 | a | 46.13 | 56.03 | a | 67.46 | d | 69.71 | 68.52 | 61.50 | d | 52.45 | b | 33.63 | 32.23 | e | 49.26 | |||||
2001 | 31.71 | 33.15 | a | 37.74 | h | 43.52 | c | 55.62 | b | 60.43 | b | 68.16 | f | 65.67 | a | 60.17 | a | 50.90 | b | 41.36 | b | 28.32 | 47.08 | b | ||
2002 | 28.63 | a | 31.00 | b | 35.17 | b | 48.41 | a | 50.07 | b | 64.85 | c | 67.78 | d | 67.43 | c | 60.78 | c | 49.20 | a | 37.20 | 33.50 | c | 47.84 | ||
2003 | 34.78 | d | 36.59 | a | 39.21 | c | 42.07 | c | 53.40 | a | 63.26 | c | 69.75 | c | 67.76 | b | 62.28 | e | 54.19 | e | 37.80 | 31.67 | d | 49.40 | ||
2004 | 32.83 | a | 31.43 | a | 44.81 | 46.21 | f | 51.07 | d | 60.38 | a | 67.93 | d | 67.07 | c | 57.58 | k | 39.41 | d | 33.00 | h | 31.10 | b | 47.34 | c | |
2005 | 36.10 | a | 38.19 | g | 37.63 | d | 42.71 | f | 51.00 | b | 60.20 | e | 68.38 | r | ----- | z | 52.33 | f | 48.64 | c | 35.45 | j | 29.94 | 43.92 | f | |
2006 | 30.33 | d | 34.69 | b | 37.25 | c | 44.58 | d | 56.16 | 67.17 | 72.52 | 68.40 | a | 60.86 | a | 48.94 | 38.38 | a | 28.23 | a | 48.96 | |||||
2007 | 27.77 | 31.11 | 35.46 | c | ----- | z | 55.13 | a | 64.33 | 72.38 | b | ----- | z | 64.15 | c | 49.19 | d | 45.40 | 33.77 | a | 47.87 | b | ||||
2008 | 31.00 | ----- | z | 35.92 | e | ----- | z | 52.67 | m | 62.83 | 59.76 | j | 65.91 | h | 59.53 | 46.90 | 38.50 | 35.32 | l | 45.78 | f | |||||
2009 | 34.30 | k | ----- | z | 41.85 | d | 45.00 | b | 57.35 | 60.20 | 72.73 | a | 68.28 | m | 62.73 | 51.00 | h | ----- | z | ----- | z | 56.65 | f | |||
2010 | 36.52 | f | 31.58 | b | 36.56 | d | 42.41 | c | 48.83 | a | 62.03 | a | 72.00 | a | 69.35 | 62.73 | 54.08 | g | 36.38 | a | 37.86 | c | 49.97 | b | ||
2011 | 29.77 | 30.56 | a | 42.65 | e | 48.67 | 51.40 | a | 63.44 | c | 70.68 | c | 70.70 | d | 63.50 | d | 49.79 | c | 39.90 | a | 30.33 | a | 49.28 | |||
2012 | 33.17 | a | 34.85 | b | 37.10 | 47.72 | a | 54.89 | c | 65.21 | f | 69.86 | c | 70.20 | a | 62.45 | a | 49.59 | b | 41.74 | c | 33.87 | a | 48.68 | a | |
2013 | 29.62 | b | 31.04 | a | 43.10 | 47.59 | a | 55.37 | a | 65.31 | a | 70.37 | d | 67.00 | f | 61.89 | b | 45.11 | c | 39.90 | a | 32.80 | a | 47.46 | a | |
2014 | 33.83 | b | 38.18 | 42.23 | 46.93 | b | 52.83 | a | 66.00 | 70.41 | b | 67.44 | d | 64.46 | d | 50.44 | f | 38.46 | b | 35.41 | d | 50.56 | a | |||
2015 | 35.52 | b | 41.14 | 44.62 | b | 43.83 | 50.31 | b | 63.11 | c | 67.90 | b | 70.29 | 65.00 | 54.60 | a | 36.63 | 30.17 | b | 50.26 | ||||||
2016 | 30.10 | 35.37 | b | 41.84 | 47.17 | 51.29 | 67.14 | a | 72.83 | b | 67.86 | c | 61.88 | d | 54.24 | b | 41.76 | a | 36.33 | d | 50.65 | |||||
2017 | 35.96 | d | 40.81 | b | 43.43 | c | 44.67 | c | 54.79 | g | 65.96 | c | 71.52 | 66.55 | b | 61.38 | a | 53.39 | 46.28 | a | 36.17 | b | 51.46 | a | ||
2018 | 36.47 | a | 37.52 | c | 41.90 | a | 49.78 | c | 54.46 | c | 64.39 | b | 71.47 | a | 69.86 | b | 65.62 | a | 53.77 | a | 37.21 | b | 36.43 | x | 52.95 | a |
2019 | ----- | z | 33.94 | l | 39.45 | b | 46.93 | c | 47.69 | b | 60.80 | 70.59 | d | 70.76 | b | 63.41 | c | 46.35 | 43.93 | a | 35.74 | 52.57 | b | |||
2020 | 32.61 | 32.03 | 41.35 | 44.90 | a | 54.33 | a | 62.48 | a | 72.68 | 72.20 | a | 63.00 | a | 50.70 | a | 43.07 | b | 28.90 | a | 49.86 | |||||
2021 | 31.48 | 34.79 | 37.61 | 47.89 | b | 53.60 | a | 67.14 | a | 69.79 | c | 67.43 | a | 61.90 | 45.74 | 40.03 | 37.19 | 49.55 | ||||||||
2022 | 30.43 | a | 28.19 | a | 37.77 | 44.88 | d | 52.13 | a | 64.83 | a | 70.65 | 68.20 | a | 62.17 | 48.14 | b | 31.53 | 34.06 | 47.75 | ||||||
2023 | 29.76 | b | 30.26 | a | 37.71 | 42.00 | c | 50.03 | a | 56.23 | 73.80 | a | 69.50 | a | 62.40 | 51.68 | 42.14 | b | 33.48 | 48.25 | ||||||
2024 | 33.35 | 37.03 | 38.56 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.19 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.44 | 34.72 | 39.46 | 45.02 | 52.36 | 62.49 | 70.24 | 68.41 | 61.99 | 49.99 | 39.04 | 33.00 | 48.96 | |||||||||||||
S.D. | 3.04 | 3.73 | 2.74 | 2.67 | 2.62 | 3.24 | 1.76 | 1.86 | 2.00 | 3.14 | 3.10 | 3.16 | 0.93 | |||||||||||||
SKEW | 0.08 | 0.02 | 0.15 | -0.22 | -0.07 | -0.24 | -0.22 | -0.42 | -0.15 | -0.39 | -0.14 | 0.09 | -0.16 | |||||||||||||
MAX | 40.26 | 41.46 | 44.81 | 49.78 | 57.48 | 68.64 | 73.80 | 72.20 | 65.80 | 55.63 | 46.28 | 41.68 | 50.65 | |||||||||||||
MIN | 24.20 | 26.04 | 32.86 | 39.17 | 46.33 | 55.61 | 65.69 | 63.13 | 56.79 | 39.41 | 31.53 | 25.82 | 47.35 | |||||||||||||
YRS | 63 | 69 | 71 | 54 | 67 | 66 | 68 | 60 | 64 | 65 | 65 | 60 | 18 |