YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.58 | 47.58 | k | |
1939 | ----- | z | 42.54 | 55.57 | a | 64.87 | 67.81 | 67.77 | 79.93 | a | 83.19 | 73.60 | 61.66 | b | 55.53 | 51.48 | 63.99 | a | ||||||||
1940 | 49.00 | 49.48 | 56.97 | 61.47 | 72.35 | 78.07 | 78.03 | 83.19 | 71.60 | 62.29 | 48.37 | 49.06 | 63.32 | |||||||||||||
1941 | 48.61 | 54.54 | 61.65 | 61.57 | 64.26 | 69.00 | 81.65 | 75.42 | 65.40 | 59.71 | 53.70 | 46.67 | a | 61.85 | ||||||||||||
1942 | 44.03 | 46.46 | 52.55 | 59.43 | 62.19 | 67.07 | 78.74 | 81.03 | 76.47 | 64.52 | 49.60 | 46.45 | 60.71 | |||||||||||||
1943 | 40.39 | 52.00 | 51.29 | 60.60 | 61.90 | 67.20 | 76.94 | 73.81 | 77.83 | 60.29 | 53.23 | 44.94 | 60.03 | |||||||||||||
1944 | 46.84 | 46.45 | 52.58 | 55.93 | 64.81 | 69.20 | 79.29 | 79.29 | 77.67 | 67.58 | 50.27 | 44.87 | 61.23 | |||||||||||||
1945 | 46.45 | 48.14 | 47.71 | 54.03 | 65.19 | 70.80 | 80.97 | 80.16 | 71.00 | 62.65 | 47.13 | 46.23 | 60.04 | |||||||||||||
1946 | 44.39 | 46.61 | 50.68 | 57.76 | a | 69.52 | 66.83 | 77.61 | 79.27 | a | 70.60 | 55.06 | 48.60 | 45.53 | a | 59.37 | ||||||||||
1947 | 40.74 | 54.11 | 56.97 | 60.80 | 71.06 | 67.33 | 74.48 | 74.35 | 74.20 | 59.10 | 49.70 | 47.13 | 60.83 | |||||||||||||
1948 | 46.65 | 44.45 | 49.13 | 52.03 | 63.06 | 70.60 | 76.81 | 73.61 | 72.63 | 61.00 | 47.23 | 40.40 | a | 58.13 | ||||||||||||
1949 | 35.74 | 43.82 | 52.43 | a | 58.24 | a | 60.47 | a | 64.40 | ----- | z | 75.39 | 72.61 | b | 54.73 | a | 58.87 | 42.71 | 56.31 | a | ||||||
1950 | ----- | z | 49.73 | b | 48.39 | 56.73 | ----- | z | 70.83 | a | 82.52 | 83.10 | 76.77 | 59.19 | 51.76 | a | 52.63 | a | 63.16 | b | ||||||
1951 | 44.03 | 48.46 | 47.35 | 66.40 | 68.00 | a | 79.03 | a | 82.19 | 82.03 | 79.97 | 59.57 | a | 52.07 | 41.87 | 62.58 | ||||||||||
1952 | ----- | z | 54.65 | l | 50.10 | a | 63.52 | a | 66.52 | 68.50 | 81.71 | 79.59 | b | 79.47 | 70.55 | 51.03 | 46.32 | 65.73 | b | |||||||
1953 | 49.03 | a | 48.71 | 50.77 | a | 57.00 | a | 61.32 | 63.80 | 78.35 | 77.19 | 75.80 | 64.55 | 53.93 | 48.48 | 60.75 | ||||||||||
1954 | 44.33 | a | 52.21 | 51.97 | 58.97 | a | 67.35 | 64.60 | 71.61 | 70.61 | 69.45 | a | 62.19 | 55.30 | 46.10 | 59.56 | ||||||||||
1955 | 43.74 | 45.14 | 46.74 | 50.70 | 61.19 | 69.80 | 70.45 | 77.45 | 73.28 | a | 60.42 | 47.53 | 45.52 | 57.66 | ||||||||||||
1956 | 45.26 | 39.79 | 48.45 | 61.10 | 67.71 | 66.52 | a | 80.10 | 76.74 | 73.87 | 57.48 | 51.60 | 47.16 | 59.65 | ||||||||||||
1957 | 37.52 | 49.50 | 51.74 | 60.47 | 65.71 | 69.60 | 75.45 | 73.55 | 80.07 | 60.03 | 51.90 | 48.26 | 60.32 | |||||||||||||
1958 | 47.77 | 54.21 | 52.23 | 57.27 | 71.10 | 72.43 | 83.52 | 83.16 | 72.70 | 66.52 | 50.83 | 50.45 | 63.52 | |||||||||||||
1959 | 46.07 | a | 46.75 | 52.68 | 59.40 | 62.74 | 68.30 | 80.06 | 76.90 | 67.73 | 61.65 | 52.83 | 45.26 | 60.03 | ||||||||||||
1960 | 42.65 | 46.48 | 53.52 | 58.03 | 60.48 | 73.10 | 82.48 | 75.16 | 73.23 | 64.32 | 50.93 | 46.84 | 60.60 | |||||||||||||
1961 | 50.27 | a | 49.43 | 50.94 | 57.73 | 61.90 | 75.50 | 80.13 | 83.58 | 70.83 | 61.57 | a | 49.57 | 45.10 | 61.38 | |||||||||||
1962 | 45.52 | 49.32 | 48.84 | 60.87 | 57.35 | 72.23 | 79.23 | 76.52 | 74.57 | 62.45 | 52.69 | d | 50.90 | k | 61.78 | a | ||||||||||
1963 | 42.14 | i | 55.78 | j | 52.38 | e | 53.89 | b | 68.16 | 67.47 | 72.13 | 77.68 | 78.11 | b | 62.71 | 50.20 | 47.26 | 63.00 | b | |||||||
1964 | 44.42 | 50.17 | 49.65 | 55.93 | a | 62.97 | 67.87 | 77.32 | 74.74 | 72.28 | a | 66.77 | 48.82 | b | 43.39 | 59.53 | ||||||||||
1965 | 44.76 | b | 49.32 | c | 58.72 | b | 62.03 | a | 63.42 | 72.21 | a | 84.03 | 79.33 | a | 74.68 | e | 68.57 | c | 54.21 | a | 43.64 | c | 62.91 | |||
1966 | 44.61 | 47.71 | 53.62 | b | 64.70 | c | 70.26 | 72.59 | a | 77.57 | a | 80.65 | 76.17 | 64.00 | 52.69 | a | 46.39 | 62.58 | ||||||||
1967 | 45.77 | a | 51.46 | 49.90 | 54.07 | a | 67.35 | 78.03 | 83.77 | a | 90.52 | 83.33 | 62.48 | b | 54.00 | b | 44.00 | b | 63.72 | |||||||
1968 | 45.37 | a | 57.34 | 56.52 | 58.23 | 65.70 | a | 72.87 | 80.00 | 74.61 | 73.27 | 61.39 | c | 51.67 | 42.59 | b | 61.63 | |||||||||
1969 | 38.10 | 45.48 | a | 58.21 | b | 58.50 | b | 72.23 | a | 73.90 | 77.20 | a | 79.23 | 74.13 | 60.97 | a | 53.67 | 47.17 | b | 61.57 | ||||||
1970 | 46.27 | a | 56.58 | b | 54.30 | a | 54.83 | a | 69.67 | d | 76.74 | c | 83.26 | 83.03 | 69.97 | a | 62.74 | 50.89 | b | 42.97 | a | 62.60 | ||||
1971 | 44.20 | a | 46.81 | b | 47.81 | 58.39 | b | 67.81 | 66.90 | 80.30 | a | 81.61 | 69.88 | e | 59.60 | a | 49.69 | a | 42.23 | 59.60 | ||||||
1972 | 41.81 | 48.30 | b | 56.06 | 54.17 | a | 69.80 | a | 72.17 | 83.84 | 83.66 | b | 70.34 | a | 64.93 | a | 51.72 | a | 43.42 | 61.69 | ||||||
1973 | 43.79 | b | 53.76 | c | 49.89 | d | 60.15 | d | 66.85 | e | 69.88 | d | 77.57 | c | 73.07 | c | 70.83 | 59.23 | a | 46.10 | 46.65 | 59.82 | ||||
1974 | 41.68 | 45.11 | a | 53.00 | 55.22 | c | 61.41 | b | 72.40 | 72.11 | d | 75.93 | a | 79.18 | b | 64.42 | 51.76 | a | 45.94 | 59.85 | ||||||
1975 | 45.21 | b | 46.42 | b | 48.71 | 51.71 | b | 64.60 | a | 67.34 | a | 73.87 | 69.66 | b | 75.72 | a | 55.79 | b | 47.28 | a | 45.66 | b | 57.66 | |||
1976 | 46.13 | 45.68 | a | 49.23 | a | 56.59 | c | 64.48 | b | 67.30 | g | 73.87 | a | 70.46 | c | 71.38 | f | 62.50 | g | 55.70 | j | 47.04 | e | 56.69 | d | |
1977 | 47.07 | c | 51.78 | e | 48.55 | b | 62.12 | d | 58.04 | d | 71.70 | c | 74.19 | d | 80.32 | 64.70 | j | 61.56 | d | 47.09 | g | 47.57 | c | 60.29 | b | |
1978 | 47.42 | 50.07 | 58.42 | e | 57.36 | e | 61.62 | g | 73.65 | j | 76.38 | b | 73.52 | 65.96 | c | 67.33 | a | 47.80 | e | 43.13 | p | 60.47 | c | |||
1979 | 40.26 | h | 44.69 | b | 56.42 | 58.22 | g | ----- | z | 74.57 | i | 78.30 | a | 73.90 | 73.70 | g | 63.46 | c | 54.48 | i | 53.30 | d | 61.68 | f | ||
1980 | 42.61 | h | 52.15 | i | 49.33 | d | 62.76 | a | 62.93 | c | 64.88 | f | 76.66 | b | 74.63 | d | 74.28 | e | 68.87 | h | 54.00 | f | 46.52 | f | 66.76 | f |
1981 | 49.93 | b | 50.58 | b | 53.74 | h | 58.11 | c | 61.88 | f | 65.62 | d | 75.76 | f | 80.36 | c | 75.04 | g | 59.42 | e | 53.86 | i | 46.08 | r | 60.67 | f |
1982 | 41.35 | h | 47.00 | f | 53.41 | i | 55.92 | d | 67.77 | e | 71.00 | c | 74.11 | c | 76.79 | b | 70.62 | d | 62.42 | e | 47.76 | e | 44.70 | k | 65.80 | d |
1983 | 49.83 | b | 49.74 | e | 53.03 | a | 58.34 | a | 68.88 | f | 66.62 | d | 70.85 | e | 75.52 | f | 69.17 | a | 62.00 | c | 50.45 | h | 40.52 | h | 59.95 | d |
1984 | 49.00 | f | 52.35 | c | 56.03 | b | 54.04 | b | 62.00 | b | 66.58 | d | 77.81 | d | 77.00 | d | 71.92 | e | 56.04 | d | 48.12 | n | 42.57 | h | 63.75 | c |
1985 | 43.46 | g | 44.83 | e | 50.14 | b | 60.65 | d | 63.80 | a | 73.50 | d | 84.57 | a | 81.00 | i | 67.96 | e | 59.76 | b | 41.86 | h | 43.32 | c | 60.95 | c |
1986 | 52.06 | o | 48.70 | h | 59.62 | g | 58.05 | i | 66.76 | f | 75.70 | c | 73.04 | d | 83.50 | m | 66.80 | j | 62.31 | e | 49.13 | g | 42.41 | d | 63.36 | h |
1987 | 41.68 | f | 49.60 | h | 52.43 | h | 64.11 | c | 66.34 | b | 75.95 | i | 72.55 | i | 76.87 | h | 71.08 | d | 66.68 | c | 46.56 | n | 39.24 | b | 61.49 | g |
1988 | 42.86 | b | 49.46 | a | 50.90 | a | 56.72 | a | 58.93 | a | 67.13 | 74.77 | 76.42 | g | 72.05 | h | 61.12 | g | 46.52 | a | 41.59 | b | 54.32 | c | ||
1989 | 43.25 | k | 39.00 | 47.17 | b | 60.07 | c | 61.65 | 69.43 | g | 70.33 | d | 69.79 | g | 73.44 | e | 54.61 | m | 47.71 | b | 42.14 | c | 55.19 | d | ||
1990 | 42.58 | e | 40.96 | c | 52.53 | l | 58.65 | j | 60.95 | i | 64.87 | o | 80.68 | f | 75.81 | d | 70.25 | f | 54.77 | a | 48.00 | b | 37.29 | c | 49.90 | f |
1991 | 41.43 | a | 53.22 | a | 48.07 | d | 52.10 | a | 56.66 | b | 63.70 | 78.14 | b | 77.08 | e | 74.90 | a | 62.08 | f | 49.64 | h | 44.33 | d | 58.96 | b | |
1992 | 45.21 | c | 51.82 | a | 57.31 | b | 58.70 | g | 73.65 | n | 78.85 | q | 80.62 | r | 78.43 | j | 66.19 | n | 59.37 | d | 47.35 | d | 39.77 | i | 52.21 | g |
1993 | 37.46 | c | 45.17 | d | 53.00 | j | 52.91 | g | 67.48 | j | 66.59 | c | 67.56 | d | 74.75 | c | 75.00 | b | 62.11 | d | 43.54 | d | 40.69 | e | 56.99 | c |
1994 | 44.67 | d | 42.75 | d | 53.70 | k | 55.96 | d | 68.46 | g | 68.41 | c | 79.48 | h | 74.33 | j | 74.00 | g | 56.37 | a | 41.31 | d | 41.96 | g | 51.58 | f |
1995 | 42.38 | w | 50.53 | i | 53.14 | i | 55.85 | d | 66.41 | d | 69.12 | d | 78.00 | d | 72.63 | a | 68.83 | f | 57.04 | f | 51.69 | d | 43.76 | n | 65.62 | f |
1996 | 40.81 | j | 44.43 | h | 52.18 | i | 55.33 | l | 59.84 | f | 69.29 | f | 81.34 | b | 78.26 | 66.61 | b | 57.04 | g | 47.55 | a | 43.74 | d | 63.50 | g | |
1997 | 43.61 | c | 46.30 | a | 48.73 | a | 54.07 | a | 69.00 | 67.52 | a | 76.61 | 77.87 | a | 69.04 | c | 56.03 | b | 51.72 | a | 42.84 | 58.61 | ||||
1998 | 46.84 | f | 46.88 | c | 53.96 | e | 56.93 | a | 61.53 | a | 67.54 | f | 78.61 | h | 78.92 | e | 76.14 | b | 55.24 | f | 48.19 | c | 40.85 | e | 57.93 | d |
1999 | 43.04 | g | 42.93 | a | 45.75 | c | 56.80 | 59.14 | b | 66.00 | e | 74.92 | e | 74.89 | d | 74.27 | d | 60.93 | d | 51.22 | c | 41.71 | j | 60.68 | b | |
2000 | 40.52 | f | 46.08 | e | 48.86 | c | 61.17 | l | 61.61 | c | 71.89 | b | 76.41 | d | 76.37 | d | 69.58 | f | 57.50 | c | 43.43 | g | 42.48 | h | 62.67 | e |
2001 | 44.48 | f | 45.38 | b | 53.50 | c | 52.17 | a | 68.24 | b | 65.93 | c | 74.11 | c | 75.65 | 71.37 | 56.86 | c | 48.59 | a | 41.79 | b | 59.42 | a | ||
2002 | 40.46 | c | 44.88 | b | 46.17 | b | 54.17 | 58.10 | a | 67.39 | b | 75.55 | 76.35 | 70.93 | 58.00 | 51.10 | a | 45.83 | b | 57.41 | ||||||
2003 | 48.77 | a | 46.85 | b | 50.30 | a | 52.64 | b | 62.10 | b | 72.76 | a | 81.06 | 77.14 | b | 72.90 | a | 60.71 | c | 47.14 | a | ----- | z | 61.12 | a | |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.64 | i | 44.63 | 40.06 | 42.35 | j | ||
2006 | 43.39 | ----- | z | 44.48 | 55.48 | c | 59.56 | v | ----- | z | 76.63 | a | 74.13 | 67.38 | f | 55.77 | 45.27 | 40.90 | 54.51 | d | ||||||
2007 | 38.97 | 43.79 | 50.88 | e | 53.17 | 62.16 | 63.91 | h | 74.47 | a | 71.29 | 65.10 | 52.71 | ----- | z | ----- | z | 56.95 | c | |||||||
2008 | 36.61 | 44.38 | 43.90 | 47.73 | 60.19 | 64.30 | 74.55 | 71.90 | 69.30 | 55.32 | 49.10 | 37.87 | 54.60 | |||||||||||||
2009 | 40.74 | 44.11 | 43.16 | 52.47 | 63.29 | 66.07 | 78.74 | 73.29 | 69.10 | 54.65 | 46.37 | 37.33 | a | 55.78 | ||||||||||||
2010 | 46.10 | 47.36 | 48.77 | 51.37 | 55.42 | 61.80 | 74.03 | 73.16 | 65.27 | 55.61 | 43.93 | 42.26 | 55.42 | |||||||||||||
2011 | 41.81 | 39.64 | 44.52 | 46.67 | 53.32 | 62.43 | 68.06 | 72.45 | 71.43 | 54.29 | 44.13 | 38.87 | 53.14 | |||||||||||||
2012 | 44.10 | 42.41 | 43.19 | 53.43 | 60.39 | 54.90 | t | 70.93 | a | 76.97 | 73.47 | 58.24 | b | 48.44 | c | 39.96 | d | 55.59 | a | |||||||
2013 | 37.97 | 43.93 | 50.87 | 55.83 | 65.52 | 67.77 | 78.06 | 75.55 | 65.73 | 57.10 | 45.73 | 38.26 | 56.86 | |||||||||||||
2014 | 43.87 | 42.86 | 52.23 | 56.53 | 65.26 | 66.77 | 80.19 | 77.58 | 73.43 | 61.71 | 45.97 | 44.32 | 59.23 | |||||||||||||
2015 | 47.39 | 49.43 | 56.65 | 57.07 | 63.39 | 77.10 | 81.06 | 78.19 | 68.70 | 63.10 | 44.10 | 42.58 | 60.73 | |||||||||||||
2016 | 41.77 | 48.10 | 49.13 | 60.13 | 63.84 | 68.20 | 71.26 | 77.00 | 65.67 | 53.10 | 49.70 | 37.71 | 57.13 | |||||||||||||
2017 | 36.60 | a | 42.54 | 46.55 | 50.77 | 68.03 | 69.77 | 77.68 | 81.19 | 71.50 | 56.81 | 46.63 | 39.90 | 57.33 | ||||||||||||
2018 | 44.42 | 44.07 | 47.87 | 57.53 | 65.94 | 69.83 | 81.65 | 79.19 | 68.60 | 59.45 | 47.07 | 43.58 | 59.10 | |||||||||||||
2019 | 43.97 | 35.61 | 48.90 | 54.93 | 64.80 | a | 70.90 | 74.29 | 76.40 | a | 63.77 | 56.89 | v | 46.93 | 43.61 | 56.74 | a | |||||||||
2020 | 43.48 | 44.97 | 48.23 | 57.80 | 64.06 | 67.27 | 77.26 | 79.25 | o | 68.57 | w | 58.68 | 45.63 | 43.32 | 55.07 | b | ||||||||||
2021 | 46.57 | q | 43.33 | v | 48.48 | 59.17 | 61.81 | 74.73 | o | 78.96 | e | 74.70 | k | 68.93 | 53.68 | 49.77 | 39.65 | 57.56 | d | |||||||
2022 | 42.32 | 45.36 | 49.97 | 49.78 | c | 57.84 | 67.73 | 78.94 | 81.35 | 73.27 | 64.65 | 41.37 | 40.41 | b | 57.75 | |||||||||||
2023 | 41.80 | f | 42.10 | h | 43.48 | h | 51.63 | 67.94 | 72.60 | 80.32 | 80.65 | 67.80 | 58.06 | 47.03 | 47.06 | 63.68 | c | |||||||||
2024 | 42.97 | 45.24 | 48.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.64 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.89 | 47.15 | 50.92 | 56.92 | 64.17 | 69.46 | 77.38 | 77.27 | 72.23 | 60.40 | 49.24 | 44.08 | 59.72 | |||||||||||||
S.D. | 3.44 | 4.15 | 3.92 | 4.01 | 4.09 | 3.82 | 3.92 | 3.81 | 4.06 | 3.92 | 3.39 | 3.55 | 2.42 | |||||||||||||
SKEW | -0.42 | 0.08 | 0.39 | -0.06 | -0.19 | 0.52 | -0.34 | 0.55 | 0.20 | 0.16 | 0.07 | 0.19 | -0.58 | |||||||||||||
MAX | 50.27 | 57.34 | 61.65 | 66.40 | 72.35 | 79.03 | 84.57 | 90.52 | 83.33 | 70.55 | 58.87 | 53.30 | 63.72 | |||||||||||||
MIN | 35.74 | 35.61 | 43.16 | 46.67 | 53.32 | 61.80 | 67.56 | 69.66 | 63.77 | 52.71 | 41.31 | 37.29 | 53.14 | |||||||||||||
YRS | 64 | 73 | 74 | 76 | 71 | 69 | 76 | 73 | 70 | 74 | 71 | 71 | 44 |