YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | 58.16 | b | 68.21 | 75.48 | 80.44 | 76.02 | 72.82 | 59.03 | 45.52 | 39.95 | a | 63.96 | c | |||||||
1940 | 25.02 | 39.41 | 48.39 | 54.73 | 66.10 | a | 73.83 | a | 82.05 | 76.27 | 71.60 | ----- | z | ----- | z | ----- | z | 59.71 | c | |||||||
1941 | ----- | z | ----- | z | 41.27 | 55.17 | 62.74 | 70.32 | 76.29 | b | 75.17 | b | 67.77 | 57.08 | k | 47.87 | c | 38.17 | b | 59.42 | c | |||||
1942 | 36.10 | a | 34.58 | c | 45.58 | e | 55.94 | f | ----- | z | 73.05 | h | 77.20 | h | 76.02 | i | 68.72 | g | 56.33 | g | 49.37 | k | 39.58 | f | 38.75 | i |
1943 | 38.13 | d | 43.31 | g | 46.91 | h | 61.05 | h | 62.28 | f | 75.89 | b | 78.81 | b | 81.34 | b | 69.08 | d | 56.75 | m | 45.98 | g | 29.79 | b | 62.17 | f |
1944 | ----- | z | 39.81 | e | ----- | z | 51.40 | j | 65.31 | d | 74.02 | 77.56 | 78.85 | 71.47 | 69.71 | j | 45.80 | 35.74 | 61.07 | d | ||||||
1945 | 37.21 | 46.08 | d | 49.84 | 48.02 | a | 66.00 | c | 72.45 | 75.73 | a | 78.16 | c | 73.54 | d | 59.10 | f | 46.53 | a | 35.37 | e | 57.18 | a | |||
1946 | 34.20 | c | 41.52 | a | 48.81 | 60.10 | a | 61.40 | a | 74.86 | a | 81.30 | f | 77.79 | b | 68.52 | b | 59.10 | 45.86 | a | 41.59 | b | 55.79 | a | ||
1947 | 34.41 | d | 33.37 | b | 41.42 | g | 53.66 | n | ----- | z | 75.28 | 80.19 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.69 | i | |
1948 | 32.97 | a | 34.15 | b | 41.87 | d | 60.14 | i | ----- | z | 75.48 | 78.79 | 76.74 | 71.47 | 55.05 | 40.48 | f | 35.25 | u | 58.31 | d | |||||
1949 | 15.60 | u | 31.75 | v | 45.05 | a | 52.92 | 63.48 | 72.63 | 78.37 | 75.02 | 68.12 | 57.81 | 52.00 | 37.05 | 60.24 | b | |||||||||
1950 | 37.89 | 42.36 | g | 44.87 | 55.38 | a | ----- | z | 74.05 | 73.94 | 73.69 | 64.36 | a | 55.25 | e | ----- | z | 36.67 | b | 57.34 | c | |||||
1951 | 33.87 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.87 | k |
1952 | ----- | z | 39.28 | k | 41.48 | a | 53.66 | b | 64.19 | 79.55 | 77.58 | 80.71 | 68.57 | 55.85 | ----- | z | ----- | z | 65.20 | d | ||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.32 | 75.68 | 71.67 | 60.18 | 46.28 | 33.78 | a | 61.15 | f | |||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | 59.90 | a | 76.80 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.90 | k |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | 64.28 | a | 71.33 | 78.82 | 78.02 | ----- | z | ----- | z | 41.38 | ----- | z | 66.77 | g | ||||
1956 | ----- | z | ----- | z | 45.63 | a | 52.34 | a | 69.00 | h | 77.90 | 78.40 | 78.60 | a | 73.03 | 62.24 | 40.91 | g | 40.11 | 63.53 | d | |||||
1957 | 34.65 | 45.54 | a | 43.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.32 | 40.95 | 42.26 | 43.85 | f | |||||
1958 | 35.69 | 37.84 | 34.63 | 50.48 | 66.13 | 76.16 | a | 76.40 | a | 78.13 | 70.67 | 56.76 | 43.97 | 36.40 | 55.27 | |||||||||||
1959 | 29.48 | 37.43 | 42.50 | 52.31 | a | 65.26 | 76.15 | 76.55 | 78.73 | 69.43 | 53.05 | 39.98 | 38.24 | 54.93 | ||||||||||||
1960 | 30.69 | 30.74 | 40.45 | 58.27 | 63.81 | 74.55 | 74.92 | 77.48 | 69.63 | 57.26 | 46.02 | 34.29 | 54.84 | |||||||||||||
1961 | 34.76 | 37.88 | 44.35 | 52.02 | 65.37 | 73.05 | 75.35 | 75.34 | 65.12 | 56.47 | 38.90 | 33.68 | 54.36 | |||||||||||||
1962 | 28.52 | 43.11 | 42.50 | 55.30 | 70.18 | 71.38 | 77.31 | 78.29 | 68.18 | 59.76 | 46.22 | 39.83 | a | 56.71 | ||||||||||||
1963 | 25.84 | 40.70 | 47.95 | 60.00 | 68.29 | 73.97 | 81.74 | 78.82 | a | 71.72 | 65.76 | 47.05 | 30.19 | 57.67 | ||||||||||||
1964 | 35.98 | 30.31 | 41.68 | 55.15 | 68.32 | 73.82 | 81.74 | 77.63 | 68.37 | 58.03 | 44.35 | 35.11 | 55.87 | |||||||||||||
1965 | 39.05 | 35.72 | a | 35.79 | 57.33 | 65.35 | 71.05 | 78.27 | 75.92 | 67.23 | 57.82 | 51.03 | 40.79 | 56.28 | ||||||||||||
1966 | 27.82 | 33.45 | 47.32 | 54.07 | 65.87 | a | 73.52 | 83.13 | 74.22 | a | 68.07 | 55.48 | 47.97 | 33.84 | 55.40 | |||||||||||
1967 | 37.98 | 37.82 | 50.73 | 59.33 | 60.45 | c | 70.33 | 75.73 | 73.45 | 68.00 | 60.13 | a | 44.52 | 33.26 | 55.98 | |||||||||||
1968 | 35.35 | 36.84 | 46.23 | 52.85 | 59.97 | 73.65 | 76.37 | 75.56 | 68.77 | 59.27 | a | 43.05 | 34.02 | 55.16 | ||||||||||||
1969 | 38.42 | 38.12 | 35.92 | 56.50 | 65.19 | 70.23 | 79.95 | 78.69 | 69.22 | 52.37 | 43.97 | 38.02 | a | 55.55 | ||||||||||||
1970 | 32.77 | 41.39 | 40.45 | a | 52.72 | a | 67.18 | 72.68 | 79.34 | 78.18 | 67.82 | 52.47 | 44.62 | 41.27 | 55.91 | |||||||||||
1971 | 34.85 | 36.86 | 44.68 | 54.30 | 63.13 | 76.30 | 77.61 | 73.68 | 66.42 | 58.06 | 46.35 | 38.02 | 55.85 | |||||||||||||
1972 | 35.81 | 40.28 | 51.13 | 58.80 | 64.73 | 74.02 | 75.19 | 74.87 | 68.72 | 57.76 | 35.95 | 32.00 | 55.77 | |||||||||||||
1973 | 31.76 | 38.16 | 44.82 | 48.24 | a | 60.94 | 72.82 | 76.71 | 78.32 | 67.05 | 59.84 | 48.07 | a | 36.47 | 55.27 | |||||||||||
1974 | 32.31 | 40.95 | 52.05 | a | 57.67 | 69.50 | 74.15 | 79.98 | 72.53 | 62.21 | a | 58.15 | 44.42 | 34.82 | 56.56 | |||||||||||
1975 | 35.24 | 33.11 | 43.78 | a | 53.42 | 63.58 | 72.72 | 75.58 | 77.45 | 66.25 | 59.95 | 44.88 | a | 40.00 | 55.50 | |||||||||||
1976 | 35.40 | 45.78 | 45.30 | a | 57.02 | a | 59.85 | 73.70 | 76.58 | 77.52 | a | 68.18 | 51.69 | 40.95 | 37.47 | 55.79 | ||||||||||
1977 | 28.08 | 41.95 | 47.08 | 55.10 | a | 67.47 | 77.97 | 81.03 | 77.23 | 72.35 | 59.85 | 46.59 | a | 39.21 | 57.83 | |||||||||||
1978 | 27.52 | a | 27.64 | 45.24 | 59.58 | 62.13 | 75.08 | 82.34 | 76.68 | 70.88 | ----- | z | 45.15 | 32.35 | 54.96 | a | ||||||||||
1979 | 23.83 | a | 38.02 | 46.08 | 54.59 | a | 61.77 | a | 71.84 | b | 79.03 | 75.77 | 70.98 | 61.92 | 40.75 | 39.36 | b | 55.33 | ||||||||
1980 | 34.95 | 37.41 | 44.05 | a | 52.78 | 61.26 | 77.85 | 84.60 | b | 79.55 | c | 71.13 | 58.02 | 44.07 | 42.47 | b | 57.35 | |||||||||
1981 | 38.84 | 41.50 | 46.26 | b | 61.00 | 63.13 | 77.39 | b | 80.22 | a | 75.73 | 70.15 | 57.63 | 50.28 | 40.16 | 58.52 | ||||||||||
1982 | 37.55 | c | 33.60 | g | 46.92 | e | 55.13 | g | 63.83 | g | 69.28 | e | 78.59 | c | 78.00 | d | 71.20 | g | 57.25 | e | 42.13 | c | 34.31 | b | 55.50 | d |
1983 | 33.46 | f | 33.65 | d | 41.91 | c | 48.62 | d | 59.54 | d | 68.70 | e | 80.71 | e | 81.81 | d | 71.24 | g | 59.07 | a | 47.43 | c | 26.09 | i | 57.94 | c |
1984 | 31.88 | f | 38.62 | e | 42.36 | f | 49.65 | c | 65.17 | d | 74.75 | f | 78.44 | d | 77.08 | a | 69.00 | c | 53.20 | c | 45.40 | d | 37.73 | g | 59.57 | d |
1985 | 31.77 | c | 33.63 | b | 47.96 | g | 58.34 | e | 65.61 | c | 72.30 | g | 79.76 | f | 78.43 | c | 67.71 | a | 54.98 | a | 42.91 | a | 33.44 | 51.87 | c | |
1986 | 42.77 | 38.41 | 52.29 | b | 57.73 | 64.69 | b | 73.60 | 80.44 | 75.98 | a | 69.27 | 55.67 | a | 42.70 | 36.05 | a | 57.47 | ||||||||
1987 | 33.94 | 40.83 | a | 42.79 | 54.12 | 65.26 | 73.05 | 78.23 | 75.72 | b | 67.55 | a | 57.08 | 44.50 | a | 34.18 | a | 55.60 | ||||||||
1988 | 29.07 | a | 36.34 | 42.76 | 51.73 | 62.35 | 74.07 | 76.89 | 77.29 | 66.75 | 57.53 | 46.70 | 37.05 | 54.88 | ||||||||||||
1989 | 37.89 | 29.50 | a | 49.16 | 57.27 | 65.10 | 67.63 | 76.40 | a | 75.12 | a | 65.85 | 59.10 | 46.05 | 30.23 | a | 54.94 | |||||||||
1990 | 35.05 | 37.67 | b | 44.02 | 54.73 | 60.87 | 78.92 | 76.29 | 75.92 | 71.26 | c | 56.17 | a | 48.47 | a | 31.48 | a | 55.90 | ||||||||
1991 | 30.05 | 44.46 | b | 47.48 | 56.31 | a | 67.05 | c | 73.55 | 75.82 | a | 75.68 | a | 66.32 | 58.09 | b | 38.50 | a | 36.63 | a | 55.83 | |||||
1992 | 36.93 | b | 42.16 | 48.78 | a | 56.76 | a | 62.63 | a | 68.66 | a | 75.79 | b | 72.15 | a | 68.45 | 58.87 | d | 37.72 | g | 34.98 | j | 59.12 | b | ||
1993 | ----- | z | 34.94 | b | 45.91 | c | 52.72 | 63.06 | 72.65 | 78.61 | 76.35 | 66.46 | b | 53.85 | a | 40.20 | b | 37.26 | 56.55 | a | ||||||
1994 | 35.32 | a | 36.00 | a | 46.18 | 54.13 | 64.05 | a | 78.77 | 77.03 | 76.35 | 68.95 | 57.70 | a | 44.59 | a | 40.19 | b | 56.60 | |||||||
1995 | 35.65 | 44.31 | a | 46.95 | b | 50.82 | 59.15 | 70.34 | b | 76.42 | 78.58 | 67.48 | a | 57.68 | 46.65 | f | 37.93 | c | 56.85 | a | ||||||
1996 | 34.92 | e | 39.71 | c | 41.80 | d | 55.12 | a | 68.27 | c | 76.07 | g | 76.10 | e | 74.11 | d | 65.57 | a | 56.14 | c | 44.85 | d | 36.64 | b | 53.93 | a |
1997 | 33.00 | c | 35.69 | a | 48.55 | a | 48.04 | d | 61.95 | 71.81 | c | 79.10 | 75.78 | a | 70.96 | c | 57.82 | l | 41.17 | l | 33.91 | h | 58.32 | c | ||
1998 | 37.60 | f | 41.66 | f | 41.83 | a | 50.40 | d | 68.50 | 76.81 | c | 80.38 | c | 75.87 | a | 74.74 | a | 58.24 | d | 47.86 | b | 39.02 | d | 61.37 | b | |
1999 | 38.67 | a | 44.35 | d | 43.63 | a | 53.67 | f | ----- | z | 72.46 | f | 78.46 | g | 77.93 | d | 67.89 | h | 56.28 | h | 50.28 | l | 38.27 | e | 48.57 | g |
2000 | 38.33 | d | 44.50 | i | 46.33 | j | 55.05 | h | 67.42 | k | 72.50 | h | 79.94 | f | 81.50 | c | 73.29 | f | 59.21 | c | 40.21 | f | 29.81 | o | 59.68 | i |
2001 | ----- | z | 38.91 | e | 42.48 | j | 59.66 | h | 64.34 | c | 76.58 | f | 83.21 | c | 78.31 | 70.02 | e | 58.60 | f | 50.48 | h | 40.02 | e | 62.47 | f | |
2002 | 36.31 | g | ----- | z | 42.06 | f | 56.58 | e | 66.07 | i | 77.96 | b | 78.22 | f | 77.88 | g | 70.50 | g | 52.92 | k | ----- | z | 35.39 | h | 67.27 | j |
2003 | 39.27 | g | 38.58 | i | 44.40 | k | 57.23 | h | 67.07 | i | 70.06 | f | 82.50 | i | 79.64 | i | 66.50 | i | 59.74 | h | 44.32 | h | 39.83 | h | ----- | z |
2004 | 35.08 | l | 38.00 | e | 51.32 | i | 52.40 | j | 68.65 | k | 72.77 | f | 74.61 | l | 74.35 | g | 69.18 | m | 56.70 | k | 42.68 | m | 37.76 | l | 38.00 | k |
2005 | 36.26 | n | 40.06 | l | 41.82 | l | 52.81 | i | ----- | z | 73.47 | j | 78.28 | k | 75.72 | h | 73.03 | k | 57.98 | j | 49.06 | d | 34.96 | g | 49.06 | k |
2006 | 41.19 | e | 39.66 | i | 50.18 | l | 61.37 | 67.44 | d | 77.91 | a | 80.72 | b | 76.31 | 64.43 | 56.44 | 47.58 | f | 35.17 | s | 65.73 | d | ||||
2007 | 29.79 | 35.95 | 52.11 | 51.14 | b | 62.83 | b | 70.55 | a | 76.27 | 79.60 | 70.66 | b | 60.53 | 45.72 | 33.02 | a | 55.68 | ||||||||
2008 | 34.34 | 36.97 | 46.26 | 53.92 | 63.47 | 75.75 | 76.45 | 75.29 | 66.58 | 56.42 | 47.68 | 35.40 | a | 55.71 | ||||||||||||
2009 | 35.95 | b | 42.83 | b | 48.89 | c | 53.76 | a | 62.40 | 72.32 | h | 77.52 | a | 75.55 | a | 64.93 | 47.03 | b | 48.94 | l | 36.03 | m | 56.54 | c | ||
2010 | 36.00 | b | 28.68 | 44.60 | 56.15 | 61.85 | 76.58 | 77.61 | 74.95 | a | 70.92 | 60.42 | g | ----- | z | 38.35 | 56.57 | b | ||||||||
2011 | 36.44 | g | 38.89 | f | 47.75 | c | 52.42 | d | 54.54 | q | 79.98 | g | 79.55 | k | 76.83 | y | 66.62 | n | ----- | z | ----- | z | 33.12 | k | 50.09 | j |
2012 | 39.83 | b | 36.72 | f | 52.38 | n | 61.07 | h | 67.64 | b | 78.44 | e | 82.13 | a | 77.97 | 70.55 | b | 53.91 | o | ----- | z | 33.88 | k | 69.43 | f | |
2013 | 35.16 | 37.04 | e | 45.48 | 49.55 | b | 65.68 | 77.92 | 74.82 | c | 71.39 | i | 66.24 | e | 56.48 | 43.10 | 33.05 | 53.14 | a | |||||||
2014 | 33.68 | 33.33 | a | 44.24 | 54.38 | d | 65.00 | 73.71 | k | 76.53 | 78.38 | b | 68.85 | 60.42 | 42.30 | 36.29 | 53.95 | a | ||||||||
2015 | 33.71 | 37.45 | 47.11 | 56.68 | 60.95 | 75.87 | 78.74 | 76.85 | 75.37 | 60.89 | 46.28 | 38.60 | 57.38 | |||||||||||||
2016 | 35.85 | 43.91 | 49.60 | 55.15 | 61.47 | 76.95 | 82.60 | 76.27 | a | 71.48 | 62.73 | 50.40 | 31.45 | i | 60.58 | a | ||||||||||
2017 | 35.48 | 43.54 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.51 | j | ||
2018 | 35.29 | 38.34 | 48.38 | f | 50.59 | b | 72.13 | 78.20 | 79.97 | 77.89 | 71.57 | a | 54.40 | 39.32 | 35.23 | 57.54 | a | |||||||||
2019 | 36.02 | 37.83 | a | 42.87 | 55.25 | 59.64 | x | 71.23 | o | 80.26 | h | 81.38 | a | 76.65 | 50.28 | a | 43.15 | c | 40.97 | a | 51.60 | c | ||||
2020 | 38.85 | a | 35.93 | a | 50.90 | b | 57.38 | 68.40 | 79.30 | 81.05 | 80.44 | 67.00 | 57.10 | 50.85 | 38.71 | 58.83 | ||||||||||
2021 | 36.58 | 29.52 | 47.11 | 54.09 | n | 61.64 | q | ----- | z | 78.48 | a | 79.82 | 75.63 | c | 61.60 | b | 50.48 | b | 46.75 | a | 56.22 | c | ||||
2022 | 35.67 | a | 32.98 | b | 45.79 | b | 56.84 | a | 68.16 | 76.65 | 84.13 | 79.00 | 74.92 | 58.97 | 42.52 | 42.93 | p | 59.60 | a | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.46 | 37.80 | 45.33 | 54.64 | 64.46 | 74.33 | 78.49 | 77.08 | 69.27 | 57.44 | 44.99 | 36.85 | 56.07 | |||||||||||||
S.D. | 3.83 | 4.35 | 3.71 | 3.26 | 2.90 | 2.91 | 2.47 | 2.09 | 2.90 | 3.11 | 3.37 | 3.39 | 1.08 | |||||||||||||
SKEW | -0.72 | -0.19 | -0.51 | -0.11 | 0.24 | -0.19 | 0.50 | 0.10 | 0.31 | -0.56 | -0.22 | 0.11 | 0.92 | |||||||||||||
MAX | 42.77 | 46.08 | 52.29 | 61.37 | 72.13 | 79.55 | 84.60 | 81.81 | 76.65 | 65.76 | 52.00 | 46.75 | 58.83 | |||||||||||||
MIN | 23.83 | 27.64 | 34.63 | 48.02 | 59.15 | 67.63 | 73.94 | 72.15 | 62.21 | 47.03 | 35.95 | 29.79 | 54.36 | |||||||||||||
YRS | 65 | 64 | 64 | 64 | 64 | 64 | 68 | 72 | 68 | 62 | 59 | 60 | 34 |