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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.55 | 67.08 | 56.66 | c | 48.12 | d | 40.43 | b | 57.17 | g | ||
1942 | 40.63 | e | 38.36 | c | 45.75 | g | 55.06 | f | 62.27 | c | 72.62 | 78.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.41 | g | ||
1943 | ----- | z | 47.64 | 51.47 | a | 60.73 | 64.60 | 72.87 | 76.98 | 77.73 | 70.97 | 57.63 | 48.73 | 40.42 | 60.89 | a | ||||||||||
1944 | 40.13 | 41.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.37 | 44.65 | 39.98 | 45.40 | g | |||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | 60.64 | b | 73.98 | h | 74.63 | p | 74.72 | a | 63.82 | s | 57.77 | 45.18 | 44.23 | 56.51 | g | |||
1947 | 35.70 | a | 46.52 | ----- | z | 54.28 | 65.44 | 69.70 | 77.04 | f | 74.52 | 70.61 | g | 59.32 | 41.72 | n | 34.96 | s | 57.93 | e | ||||||
1948 | 39.12 | b | 41.94 | c | ----- | z | ----- | z | ----- | z | 71.92 | 77.44 | 77.08 | 70.93 | 59.21 | 43.15 | 40.25 | a | 57.89 | c | ||||||
1949 | 34.42 | 41.86 | 48.65 | 56.98 | 62.40 | 69.98 | 75.84 | 74.15 | 70.95 | 57.52 | a | 52.28 | 39.27 | 57.02 | ||||||||||||
1950 | 39.94 | 47.00 | 50.15 | 58.05 | 60.67 | a | 70.08 | 73.89 | 72.69 | 65.53 | 63.94 | 51.83 | 46.35 | 58.34 | ||||||||||||
1951 | 39.74 | 43.62 | 47.06 | 54.02 | 63.84 | 68.72 | 78.50 | 74.93 | i | 70.10 | 59.68 | c | 46.74 | a | 39.66 | 55.61 | a | |||||||||
1952 | 42.79 | 42.36 | 43.87 | 56.42 | 63.95 | 70.60 | 74.50 | 74.58 | 68.57 | 60.02 | 44.12 | 39.08 | 56.74 | |||||||||||||
1953 | 44.61 | 42.64 | 50.58 | 55.52 | 57.21 | 72.43 | 76.52 | 72.98 | 68.02 | 57.34 | 49.20 | ----- | z | 58.82 | a | |||||||||||
1954 | 41.93 | a | 49.30 | 48.97 | 60.52 | 63.82 | 69.88 | 76.90 | 72.71 | 69.68 | 61.00 | 51.72 | 41.65 | 59.01 | ||||||||||||
1955 | 38.74 | 39.27 | 48.65 | 54.87 | 62.52 | 69.23 | 74.00 | 73.73 | 68.83 | 60.98 | 48.45 | 44.81 | 57.01 | |||||||||||||
1956 | 44.00 | 37.97 | 50.65 | 55.35 | 64.27 | 74.67 | 74.47 | 72.38 | a | 70.33 | i | 58.87 | 43.73 | 39.37 | 55.98 | a | ||||||||||
1957 | 42.66 | 52.21 | 50.15 | 55.47 | 60.94 | 71.50 | 76.66 | 72.42 | 67.77 | 56.37 | 44.65 | 42.95 | 57.81 | |||||||||||||
1958 | 39.05 | 46.66 | 45.13 | 53.88 | 66.40 | 74.28 | 76.74 | 75.61 | 69.57 | 58.45 | 47.52 | 44.18 | 58.12 | |||||||||||||
1959 | 42.76 | 43.73 | 48.52 | 59.10 | 62.00 | 76.08 | 77.02 | 74.34 | 68.28 | 60.63 | 48.68 | 42.82 | 58.66 | |||||||||||||
1960 | 38.19 | 41.03 | 53.60 | 57.73 | 62.76 | 76.28 | 76.16 | 77.29 | 72.55 | 59.61 | 50.97 | 40.61 | 58.90 | |||||||||||||
1961 | 43.06 | 45.86 | 50.60 | 58.53 | 63.19 | 74.32 | 76.98 | 75.08 | 67.00 | 57.35 | 46.02 | ----- | z | 59.82 | a | |||||||||||
1962 | 40.39 | 48.07 | 46.05 | 60.67 | 63.53 | ----- | z | 76.55 | 78.19 | 71.73 | 61.76 | 52.35 | 44.65 | 58.54 | a | |||||||||||
1963 | 38.69 | 48.73 | 50.48 | 57.87 | 67.10 | 71.13 | 77.48 | 72.53 | 69.80 | 61.56 | 48.35 | 41.05 | 58.73 | |||||||||||||
1964 | 36.47 | 38.91 | 46.82 | 55.35 | 64.85 | 71.00 | 77.87 | 75.34 | 68.93 | 61.94 | 47.02 | a | 40.52 | 57.09 | ||||||||||||
1965 | 44.20 | a | 43.57 | 46.06 | 56.45 | 60.93 | a | 67.19 | a | 76.45 | a | 75.16 | 68.72 | 61.08 | 53.02 | 41.98 | 57.90 | |||||||||
1966 | 38.85 | 39.79 | 52.27 | 58.02 | a | 64.62 | a | 70.32 | ----- | z | 75.94 | f | 70.27 | 60.76 | j | 51.79 | a | 38.23 | g | 55.74 | d | |||||
1967 | 40.67 | a | 46.54 | 53.23 | 54.09 | a | 61.61 | 71.38 | e | 79.65 | 73.30 | h | 70.27 | b | ----- | z | 52.03 | 41.17 | k | 58.83 | c | |||||
1968 | ----- | z | 48.86 | g | 47.94 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.50 | d | 59.34 | 46.97 | a | 37.84 | 52.16 | h | ||
1969 | 43.63 | 42.18 | 45.13 | 55.72 | 62.97 | 68.35 | 75.52 | 75.65 | 68.03 | 56.58 | 46.43 | 42.35 | 56.88 | |||||||||||||
1970 | 38.82 | 45.27 | 46.47 | 50.97 | 62.24 | 70.00 | 76.66 | 74.40 | 67.87 | 54.16 | 46.92 | 42.06 | 56.32 | |||||||||||||
1971 | 40.71 | 43.36 | 49.45 | 54.20 | 59.83 | a | 70.70 | 77.79 | 72.61 | 67.70 | 55.66 | 44.63 | o | 39.05 | 57.37 | a | ||||||||||
1972 | 41.50 | 44.69 | 55.37 | 54.60 | 61.87 | 70.92 | 75.85 | 73.02 | 67.45 | 59.63 | 43.77 | 39.55 | a | 57.35 | ||||||||||||
1973 | 37.77 | a | 41.77 | ----- | z | 52.12 | b | 62.40 | 68.92 | ----- | z | 72.23 | c | 67.90 | 58.35 | 47.58 | 40.53 | 54.96 | b | |||||||
1974 | 42.26 | 41.64 | 51.89 | 54.92 | 63.81 | 74.57 | c | 74.50 | a | 71.77 | 67.86 | b | 57.77 | 46.42 | ----- | z | 58.86 | a | ||||||||
1975 | ----- | z | ----- | z | 47.71 | ----- | z | ----- | z | 69.56 | d | 73.45 | ----- | z | ----- | z | ----- | z | 41.00 | s | 41.55 | 58.07 | h | |||
1976 | 39.17 | a | ----- | z | 47.76 | 53.85 | 62.58 | 69.97 | 72.84 | 72.73 | 67.93 | a | ----- | z | 46.45 | ----- | z | 59.25 | c | |||||||
1977 | 40.65 | 45.88 | 45.06 | 56.21 | a | 60.63 | 72.13 | c | 75.87 | 75.75 | a | 70.66 | a | 60.32 | a | ----- | z | 45.05 | 58.93 | a | ||||||
1978 | 42.65 | ----- | z | 51.43 | a | 55.77 | 62.05 | 72.93 | 76.40 | 71.82 | 67.92 | 60.86 | b | 49.22 | 38.88 | a | 59.08 | a | ||||||||
1979 | 37.58 | 43.25 | 48.32 | 55.15 | 61.29 | 69.28 | 75.95 | b | 71.47 | 69.72 | 60.89 | 44.65 | 42.58 | 56.68 | ||||||||||||
1980 | 43.34 | 45.90 | 47.13 | 55.33 | 60.26 | 73.67 | 77.77 | 74.03 | b | 70.53 | 56.55 | 47.90 | 45.66 | 58.17 | ||||||||||||
1981 | 43.66 | 46.54 | 48.19 | 58.52 | 62.52 | 75.23 | 76.61 | 73.60 | 69.58 | 59.05 | 50.78 | 45.02 | 59.11 | |||||||||||||
1982 | 42.05 | 45.61 | 49.76 | 55.88 | a | 61.80 | a | 68.67 | a | 75.50 | 75.15 | 69.77 | 57.48 | 47.14 | a | 41.42 | 57.52 | |||||||||
1983 | 42.87 | 44.73 | 48.02 | a | 49.97 | 59.65 | 67.25 | 74.74 | 73.66 | 71.77 | 59.79 | 48.08 | 41.48 | 56.83 | ||||||||||||
1984 | 42.61 | 43.66 | 49.97 | 54.00 | a | 67.00 | a | 70.93 | 73.90 | 72.68 | 68.33 | 54.97 | 46.77 | 42.23 | 57.25 | |||||||||||
1985 | 39.77 | 42.66 | 50.26 | 57.90 | a | 63.35 | 72.83 | 75.56 | 74.27 | e | 65.72 | 57.73 | a | 46.85 | 41.76 | 57.39 | ||||||||||
1986 | 44.34 | 45.89 | 51.00 | 57.08 | 64.39 | 73.93 | 74.82 | 75.92 | 66.15 | 56.24 | 47.60 | a | 40.74 | 58.18 | ||||||||||||
1987 | 39.05 | 42.54 | b | 45.63 | 57.80 | 62.02 | 74.03 | 75.26 | 72.90 | 66.93 | 62.35 | 46.15 | 38.22 | a | 56.91 | |||||||||||
1988 | 40.08 | 46.62 | 48.60 | 54.62 | 63.50 | 73.05 | 75.81 | 73.29 | 65.98 | 61.52 | 46.95 | 39.24 | 57.44 | |||||||||||||
1989 | 39.08 | 45.96 | 52.50 | 61.08 | 65.84 | 73.53 | 77.26 | 74.35 | 68.85 | 57.11 | 48.41 | a | 39.26 | 58.60 | ||||||||||||
1990 | 38.55 | 41.52 | 49.63 | 57.93 | 61.35 | 76.72 | 74.60 | 71.52 | a | 70.10 | 58.38 | a | 47.95 | h | 36.60 | a | 57.90 | a | ||||||||
1991 | 39.84 | 46.43 | 44.21 | 53.34 | a | 62.05 | 69.47 | 74.79 | 73.85 | 67.05 | 60.18 | 45.95 | 40.77 | 56.49 | ||||||||||||
1992 | 38.32 | 44.59 | 48.05 | 58.13 | 62.24 | 68.83 | 74.48 | 71.90 | b | 68.85 | 60.05 | 42.58 | 39.08 | 56.43 | ||||||||||||
1993 | 42.71 | 42.55 | 50.15 | 55.62 | 64.47 | 71.95 | 76.00 | 74.14 | b | 67.48 | 57.27 | 45.65 | 40.23 | 57.35 | ||||||||||||
1994 | 40.23 | 42.29 | b | 49.71 | 55.22 | 62.71 | 76.90 | a | 77.68 | 77.35 | 69.88 | 56.88 | a | 45.67 | 42.81 | 58.11 | ||||||||||
1995 | 39.88 | b | 48.32 | 48.65 | 52.17 | 59.63 | 70.70 | 76.27 | 77.37 | 69.32 | 60.19 | g | 51.32 | 41.71 | 57.76 | a | ||||||||||
1996 | 41.43 | i | 48.40 | 48.58 | a | 57.60 | o | 66.73 | 75.97 | 76.68 | i | 73.90 | a | 66.40 | 57.13 | d | 47.61 | b | 40.71 | 58.38 | c | |||||
1997 | 38.10 | a | 42.31 | a | 50.90 | 53.57 | 66.31 | 70.68 | 76.15 | 75.50 | 72.82 | 56.50 | 48.05 | 37.16 | 57.34 | |||||||||||
1998 | 40.73 | 40.89 | 46.97 | 47.56 | n | 60.85 | a | 70.28 | c | 77.08 | a | 74.74 | 70.14 | a | ----- | z | 48.50 | 41.48 | 57.17 | b | ||||||
1999 | 42.81 | 45.52 | 50.12 | b | 52.35 | 62.77 | a | 73.00 | j | 74.97 | 74.05 | 69.33 | 57.30 | h | 51.31 | c | 38.37 | 56.16 | b | |||||||
2000 | 42.85 | 46.54 | c | 49.26 | 58.79 | a | 70.53 | k | 74.84 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.46 | g | ||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | 51.32 | n | 47.10 | 59.17 | 62.82 | a | 76.00 | a | 76.18 | 73.73 | 67.90 | a | 56.83 | a | 47.27 | 39.37 | 60.64 | b | ||||||
2003 | 45.61 | 42.89 | 47.90 | b | 52.00 | 63.92 | a | 71.80 | 79.90 | a | 76.11 | 70.02 | 62.28 | a | 47.38 | 39.37 | 58.27 | |||||||||
2004 | 41.40 | 39.83 | 53.15 | 53.32 | 62.94 | 70.05 | 74.63 | 70.88 | a | 65.88 | a | 56.02 | 44.98 | a | 38.89 | 56.00 | ||||||||||
2005 | 42.47 | 43.95 | 46.85 | 53.88 | a | 63.38 | a | 70.35 | 76.32 | a | 72.48 | 68.42 | 58.71 | 48.22 | 41.03 | 57.17 | ||||||||||
2006 | 41.76 | 45.05 | 46.98 | 56.87 | 65.61 | 73.67 | 75.21 | 71.47 | 64.08 | 57.77 | 49.43 | 39.94 | 57.32 | |||||||||||||
2007 | 39.39 | 44.44 | a | 50.69 | b | 55.42 | 62.19 | b | 71.29 | b | 74.06 | 73.57 | a | 68.20 | 58.78 | b | 52.10 | 40.40 | 57.54 | |||||||
2008 | 39.90 | 44.76 | 47.95 | a | 53.00 | a | 59.85 | 70.40 | 72.72 | a | 72.52 | 65.72 | 58.63 | 49.13 | 42.52 | 56.42 | ||||||||||
2009 | 43.81 | 44.66 | 50.06 | 53.83 | 64.11 | 67.50 | 75.61 | 73.32 | a | 66.40 | 57.08 | 49.27 | 38.45 | 57.01 | ||||||||||||
2010 | 39.85 | 42.29 | 46.60 | 54.28 | 58.76 | 69.50 | 74.15 | a | 73.68 | 69.48 | 58.74 | 45.13 | 45.75 | a | 56.52 | |||||||||||
2011 | 40.35 | 40.29 | 51.19 | 57.47 | a | 58.50 | g | 70.62 | f | 76.72 | b | 76.52 | 69.09 | a | 59.11 | 46.05 | b | 39.27 | 55.61 | b | ||||||
2012 | 43.55 | a | 43.53 | 49.15 | 57.67 | c | 62.82 | 72.07 | h | 74.74 | f | 76.03 | 69.17 | 59.47 | b | 51.26 | g | 42.20 | d | 55.95 | c | |||||
2013 | 38.19 | 41.12 | c | 51.02 | f | 55.92 | d | 61.37 | d | 73.36 | a | 73.86 | f | 73.22 | d | 67.41 | b | 55.68 | a | 48.39 | b | 40.27 | c | 55.49 | b | |
2014 | 43.74 | b | 47.45 | 50.43 | d | 54.98 | b | 60.59 | c | 71.75 | b | 75.12 | g | 71.62 | g | 69.44 | f | 59.65 | g | 47.42 | d | 43.83 | d | 52.52 | d | |
2015 | 42.72 | f | 49.80 | a | 52.36 | f | 53.38 | n | 57.33 | k | 71.20 | j | 73.82 | f | 75.19 | e | 69.72 | a | 59.93 | b | ----- | z | 40.63 | e | 59.06 | g |
2016 | 40.12 | b | 47.24 | d | 51.38 | c | 55.00 | f | 61.07 | j | 72.93 | b | 75.67 | e | 71.00 | g | 67.27 | b | 60.20 | i | 49.42 | d | 44.02 | d | 56.01 | d |
2017 | 40.92 | e | 45.66 | c | 54.23 | a | 55.91 | c | 61.08 | a | 72.50 | b | 74.85 | e | 71.70 | d | 66.71 | a | 60.48 | a | 53.75 | f | 42.28 | a | 58.76 | a |
2018 | 43.02 | f | 45.81 | b | 51.40 | a | 59.07 | a | 64.09 | d | 73.22 | 74.93 | b | 73.88 | b | 69.62 | f | 54.96 | f | 45.45 | b | 41.02 | b | 58.76 | c | |
2019 | 42.28 | b | 40.54 | b | 49.31 | b | 55.10 | 57.72 | f | 68.26 | c | 75.45 | b | 75.15 | g | 68.52 | a | 55.80 | c | 48.38 | d | 41.19 | 54.48 | b | ||
2020 | 41.66 | b | 43.16 | 48.98 | a | 53.77 | b | 63.33 | d | 70.05 | k | 76.76 | b | 77.73 | a | 69.85 | 60.11 | c | 49.46 | d | 39.66 | f | 58.48 | b | ||
2021 | 42.73 | i | 42.79 | g | 50.42 | 56.75 | h | 62.56 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.42 | k | |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | 67.11 | v | 70.00 | l | 80.03 | k | 76.98 | 71.10 | e | 61.76 | 50.28 | 43.09 | n | 65.03 | h | |||
2024 | 39.95 | l | 45.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.83 | 44.16 | 49.17 | 55.80 | 62.73 | 71.70 | 75.94 | 74.14 | 68.61 | 58.79 | 47.82 | 41.15 | 57.49 | |||||||||||||
S.D. | 2.27 | 2.90 | 2.40 | 2.40 | 2.00 | 2.43 | 1.47 | 1.78 | 1.83 | 2.05 | 2.45 | 2.15 | 0.82 | |||||||||||||
SKEW | -0.26 | 0.13 | 0.07 | 0.14 | 0.04 | 0.30 | 0.22 | 0.44 | -0.11 | 0.08 | 0.19 | 0.45 | 0.32 | |||||||||||||
MAX | 45.61 | 52.21 | 55.37 | 61.08 | 67.10 | 76.90 | 79.90 | 78.19 | 72.82 | 63.94 | 53.02 | 46.35 | 59.11 | |||||||||||||
MIN | 34.42 | 37.97 | 43.87 | 49.97 | 57.21 | 67.19 | 72.72 | 70.88 | 64.08 | 54.16 | 42.58 | 36.60 | 56.00 | |||||||||||||
YRS | 69 | 71 | 69 | 67 | 68 | 68 | 65 | 68 | 70 | 67 | 69 | 68 | 39 |