YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | 51.87 | a | 63.47 | 69.68 | 81.80 | 84.39 | 84.13 | 74.23 | 68.45 | 51.90 | 47.65 | 67.76 | b | |||||||||
1939 | 40.19 | 35.46 | 51.94 | 64.37 | 73.10 | 82.37 | 86.19 | 84.23 | 76.20 | 65.74 | 55.00 | a | 48.65 | 63.62 | ||||||||||||
1940 | 41.60 | a | 44.45 | 56.14 | b | 62.59 | a | 74.93 | b | 83.33 | 86.55 | 82.42 | 72.87 | 67.42 | 52.04 | b | 48.45 | b | 64.40 | |||||||
1941 | 41.32 | 45.93 | 50.10 | 53.79 | a | 70.00 | 76.79 | a | 83.35 | 80.75 | c | 75.07 | 62.23 | 55.82 | b | ----- | z | 63.20 | a | |||||||
1942 | 46.50 | i | 45.24 | g | 49.48 | j | ----- | z | 75.26 | 84.00 | a | 89.00 | 82.87 | 80.03 | 65.68 | 60.70 | 48.42 | 73.24 | d | |||||||
1943 | 46.58 | 55.10 | h | 54.71 | 69.40 | 73.66 | b | 82.20 | 86.45 | 82.74 | 78.23 | 66.81 | 58.20 | 45.42 | 67.67 | a | ||||||||||
1944 | 44.35 | 46.39 | a | 52.29 | c | 60.28 | a | 72.10 | 82.23 | 85.71 | 86.10 | 76.83 | 67.06 | 49.20 | 45.97 | a | 64.04 | |||||||||
1945 | 43.10 | a | 49.50 | 49.90 | 62.73 | 73.87 | 80.90 | 87.00 | 85.55 | 79.38 | a | 67.77 | 56.73 | 41.48 | 64.83 | |||||||||||
1946 | 39.81 | 46.81 | b | 56.10 | b | 70.03 | a | 71.03 | 85.97 | 84.93 | a | 79.55 | b | 75.90 | 64.43 | a | ----- | z | 52.93 | c | 66.14 | a | ||||
1947 | 45.69 | r | 51.79 | 56.17 | a | 62.87 | 74.97 | 79.90 | a | 87.79 | b | 78.07 | a | 78.54 | b | 69.45 | b | 48.21 | a | 43.96 | f | 68.77 | b | |||
1948 | 46.81 | d | 45.31 | 45.82 | c | 69.88 | m | 73.82 | c | 82.21 | a | 87.62 | o | 83.13 | a | 80.25 | b | 67.70 | h | 49.47 | 46.82 | c | 61.52 | c | ||
1949 | 36.17 | b | 42.59 | a | 54.76 | j | 65.19 | c | 73.35 | 81.03 | 83.00 | 83.68 | 79.00 | 64.16 | 62.70 | 43.62 | b | 64.95 | a | |||||||
1950 | 44.32 | 49.57 | 55.71 | 66.73 | 72.68 | 84.87 | 82.16 | 84.45 | 74.40 | 75.74 | 59.93 | 53.32 | 66.99 | |||||||||||||
1951 | 44.00 | 46.07 | 53.10 | 61.37 | 73.29 | 82.47 | 88.77 | 82.06 | 80.43 | 65.61 | 51.57 | 41.61 | 64.20 | |||||||||||||
1952 | 43.39 | 43.55 | 45.19 | 61.63 | 72.90 | 83.13 | 84.97 | 83.35 | 79.43 | 73.61 | 47.00 | 40.81 | 63.25 | |||||||||||||
1953 | 46.42 | 45.89 | 54.10 | 61.38 | a | 67.32 | 85.27 | 86.29 | 83.71 | 82.57 | 67.58 | 55.73 | 39.81 | 64.67 | ||||||||||||
1954 | 45.45 | 54.50 | 50.97 | 69.40 | 73.77 | 84.10 | 86.23 | 80.61 | 77.27 | 69.58 | 59.27 | 55.71 | x | 68.29 | a | |||||||||||
1955 | 37.55 | b | 39.96 | 54.39 | 62.63 | 70.00 | 80.97 | 83.42 | 79.13 | 80.67 | 70.84 | 54.03 | 46.93 | a | 63.38 | |||||||||||
1956 | 47.71 | 38.90 | 56.68 | 61.30 | 76.16 | 84.97 | 84.71 | 81.58 | 83.27 | 68.43 | a | 51.47 | 46.37 | a | 65.13 | |||||||||||
1957 | 43.43 | a | 52.75 | 50.94 | 59.37 | 66.16 | 82.07 | 82.87 | 78.58 | 78.97 | 61.06 | 45.40 | 47.48 | 62.42 | ||||||||||||
1958 | 43.26 | 48.36 | 45.74 | 60.10 | 76.29 | 85.30 | 85.81 | 84.61 | 76.40 | 66.52 | 53.57 | 52.19 | 64.85 | |||||||||||||
1959 | 46.32 | 46.04 | 54.29 | 64.60 | 73.55 | 85.47 | 88.29 | 79.35 | 77.03 | 64.35 | 54.20 | 45.58 | 64.92 | |||||||||||||
1960 | 37.55 | 39.03 | 55.23 | 64.70 | 71.45 | 83.93 | 85.94 | 86.19 | 80.43 | 62.45 | 55.17 | 39.58 | 63.47 | |||||||||||||
1961 | 45.00 | 47.43 | 52.74 | 63.00 | 74.45 | 86.67 | 86.42 | 81.47 | a | 73.83 | 64.35 | 47.50 | 39.90 | 63.56 | ||||||||||||
1962 | 39.81 | 46.46 | 46.90 | 66.87 | 72.67 | a | 81.57 | 84.58 | 86.19 | 75.93 | 65.81 | 55.07 | 46.81 | 64.06 | ||||||||||||
1963 | 37.42 | 47.37 | a | 52.77 | 63.93 | 76.20 | a | 82.31 | a | 87.73 | a | 78.00 | a | 76.60 | 69.26 | 52.73 | 45.53 | a | 64.16 | |||||||
1964 | 40.39 | 38.45 | 45.58 | 57.73 | 72.13 | 80.97 | 85.52 | 79.71 | 73.50 | 69.90 | 51.67 | 40.19 | 61.31 | |||||||||||||
1965 | 43.55 | 43.04 | a | 48.58 | 60.47 | 68.13 | 76.79 | a | 82.06 | 80.47 | l | 72.90 | 70.23 | 56.00 | 44.17 | b | 60.54 | a | ||||||||
1966 | 39.73 | a | 39.18 | 54.68 | 63.23 | 74.60 | a | 80.67 | 87.16 | 82.20 | a | 74.63 | 67.13 | a | 58.43 | b | 43.23 | 63.74 | ||||||||
1967 | 43.68 | 50.73 | b | 59.13 | 63.37 | 71.06 | 77.83 | 84.32 | 79.23 | a | 74.70 | 69.77 | 57.34 | a | 37.20 | a | 64.03 | |||||||||
1968 | 41.73 | a | 48.31 | 52.35 | 58.70 | 69.73 | a | 82.33 | 82.55 | 77.47 | a | 74.83 | 68.30 | a | 50.03 | a | 41.32 | 62.31 | ||||||||
1969 | 44.45 | 44.93 | 47.16 | 64.93 | 73.74 | 81.40 | 86.10 | 84.94 | 76.63 | 62.50 | a | 51.80 | 47.17 | a | 63.81 | |||||||||||
1970 | 43.84 | 50.75 | 49.37 | a | 58.48 | a | 74.16 | 82.07 | 87.07 | a | 83.52 | 76.27 | 60.19 | 56.00 | 47.61 | 64.11 | ||||||||||
1971 | 46.29 | 47.39 | 56.97 | 62.93 | 70.61 | 83.70 | 88.61 | 80.26 | 75.90 | 61.58 | 53.43 | 41.10 | 64.06 | |||||||||||||
1972 | 47.29 | 53.97 | 64.23 | 66.57 | 73.68 | 80.97 | 87.52 | 81.19 | 75.10 | a | 62.61 | 45.83 | 43.29 | 65.19 | ||||||||||||
1973 | 39.77 | 42.50 | 44.87 | a | 54.86 | a | 69.13 | 80.77 | 84.35 | 83.74 | 76.53 | 70.13 | 55.83 | 47.13 | 62.47 | |||||||||||
1974 | 41.03 | a | 47.61 | 59.48 | 63.77 | 77.32 | 87.83 | 84.16 | 81.16 | 75.57 | 63.16 | 53.57 | 42.26 | 64.74 | ||||||||||||
1975 | 42.65 | 42.71 | 51.39 | 57.00 | 69.16 | 81.20 | 83.23 | 83.06 | 71.93 | 69.10 | 56.60 | 43.58 | 62.63 | |||||||||||||
1976 | 42.77 | 53.10 | 54.23 | 63.33 | 72.13 | 83.50 | 85.35 | 82.48 | 76.33 | 66.58 | 54.90 | 48.13 | 65.24 | |||||||||||||
1977 | 40.00 | 48.11 | 51.94 | 65.30 | 71.23 | 84.76 | a | 84.23 | a | 85.35 | 77.70 | 69.71 | 56.03 | 50.53 | a | 65.41 | ||||||||||
1978 | 42.23 | 44.57 | 56.74 | 65.50 | 70.81 | 84.76 | a | 88.97 | a | 84.37 | a | 79.13 | 71.19 | 52.53 | 41.55 | 65.20 | ||||||||||
1979 | 36.68 | 45.04 | 49.71 | 63.40 | 68.00 | 80.63 | 87.48 | 81.58 | 81.67 | 71.97 | 47.70 | 48.94 | 63.57 | |||||||||||||
1980 | 42.71 | 48.59 | 51.47 | a | 62.50 | 70.35 | 87.13 | 89.55 | 83.61 | 79.60 | 69.52 | 56.73 | 55.10 | 66.40 | ||||||||||||
1981 | 50.03 | 52.71 | 50.03 | 67.10 | 71.00 | 86.43 | b | 84.60 | a | 83.90 | 77.33 | 65.35 | 59.83 | 50.42 | 66.56 | |||||||||||
1982 | 41.94 | 45.11 | 52.74 | 63.30 | 70.68 | 82.31 | a | 84.16 | 80.59 | b | 76.07 | 66.17 | a | 50.86 | a | 41.90 | 62.98 | |||||||||
1983 | 44.77 | 45.89 | a | 47.55 | 55.54 | b | 72.00 | c | 79.69 | a | 85.10 | b | 84.36 | c | 79.07 | 65.55 | b | 52.27 | 44.23 | a | 63.00 | |||||
1984 | 45.14 | b | 49.66 | 56.00 | 59.83 | 79.06 | 81.97 | 85.71 | 80.06 | 76.03 | 55.55 | 52.50 | 44.48 | 63.83 | ||||||||||||
1985 | 41.32 | 43.68 | 52.06 | 66.47 | 73.10 | 86.43 | 86.16 | 85.13 | 74.20 | 66.81 | 52.27 | 48.03 | 64.64 | |||||||||||||
1986 | 54.77 | 50.68 | 57.45 | 63.20 | 72.23 | 80.80 | 80.55 | 83.03 | 74.03 | 63.32 | 51.33 | 42.97 | 64.53 | |||||||||||||
1987 | 42.52 | 43.75 | 49.00 | 64.80 | 68.32 | 81.40 | 83.65 | 79.97 | 75.50 | 69.10 | 51.17 | 41.97 | 62.59 | |||||||||||||
1988 | 41.33 | a | 49.24 | 55.03 | 62.60 | 71.90 | a | 81.33 | 83.33 | a | 77.84 | 75.13 | 70.77 | 52.50 | 44.10 | 63.76 | ||||||||||
1989 | 41.94 | 49.29 | 61.39 | 70.77 | 76.71 | 84.00 | 85.65 | 80.19 | 78.40 | 65.35 | 54.37 | 46.97 | 66.25 | |||||||||||||
1990 | 44.19 | 45.61 | 54.97 | 63.43 | 71.63 | a | 87.00 | 81.16 | 79.45 | 77.17 | 66.52 | 53.97 | 40.46 | e | 63.80 | |||||||||||
1991 | 39.87 | 50.71 | 49.29 | 62.83 | a | 74.06 | 78.63 | 82.58 | 80.74 | 75.90 | 68.65 | 50.17 | 42.00 | a | 62.95 | |||||||||||
1992 | 39.70 | a | 45.97 | 54.41 | b | 67.07 | 67.72 | b | 78.87 | 80.81 | 79.97 | 77.93 | 68.29 | 45.77 | 41.44 | d | 62.33 | |||||||||
1993 | 43.06 | 44.50 | b | 55.23 | 64.33 | 71.13 | 82.04 | b | 84.81 | 78.97 | b | 76.62 | a | 63.65 | 50.64 | b | 46.36 | c | 63.44 | |||||||
1994 | 47.16 | 44.92 | b | 56.16 | 63.00 | c | 72.50 | c | 85.59 | a | 86.55 | 84.35 | 75.21 | a | 62.57 | a | 50.21 | a | 46.79 | b | 64.58 | |||||
1995 | 41.86 | b | 54.00 | a | 55.86 | b | 59.75 | b | 68.68 | 80.17 | 85.39 | 84.68 | 75.93 | 69.42 | 57.74 | c | 47.92 | e | 65.12 | |||||||
1996 | 48.24 | f | 51.67 | b | 56.44 | d | 66.78 | g | 78.57 | a | 84.27 | 85.61 | 83.89 | c | 72.71 | b | 64.03 | b | 53.78 | c | 45.67 | d | 67.66 | b | ||
1997 | 39.43 | a | 47.42 | d | 60.40 | a | 58.39 | b | 73.60 | a | 79.72 | a | 83.28 | b | 80.90 | 77.20 | 64.79 | c | 50.73 | 39.57 | c | 62.95 | ||||
1998 | 43.50 | c | 39.57 | 51.03 | a | 59.59 | a | 72.71 | 81.33 | c | 82.83 | a | 81.52 | b | 80.03 | a | 66.21 | b | 55.45 | a | 47.77 | a | 63.46 | |||
1999 | 49.55 | b | 54.33 | a | 60.23 | 61.21 | b | 71.66 | b | 80.57 | 79.87 | a | 79.87 | a | 75.86 | b | 69.97 | ----- | z | 45.13 | a | 66.20 | a | |||
2000 | 47.62 | b | 53.78 | b | 54.82 | c | 67.87 | 79.63 | a | 83.50 | 86.74 | 84.70 | a | 81.04 | b | 62.86 | c | 45.68 | e | 47.14 | c | 66.28 | ||||
2001 | 39.58 | e | 45.83 | v | 55.60 | f | 65.38 | a | 75.31 | b | 84.75 | b | 84.48 | b | 80.70 | a | 79.34 | a | 70.19 | d | 53.57 | b | 42.80 | a | 67.61 | b |
2002 | 42.92 | f | 49.38 | d | 57.42 | g | 69.89 | b | 75.61 | 87.21 | a | 84.77 | a | 83.68 | 74.46 | b | 62.81 | 53.17 | a | 40.57 | a | 68.15 | b | |||
2003 | 50.50 | a | 44.71 | 51.79 | b | 64.22 | c | 74.87 | a | 82.87 | 90.68 | 82.00 | a | 78.47 | 71.77 | 52.63 | 47.27 | a | 65.98 | |||||||
2004 | 43.57 | a | 42.93 | 60.90 | 60.77 | 75.52 | 82.83 | 84.26 | 80.35 | 74.80 | 64.16 | 50.07 | b | 46.46 | c | 63.89 | ||||||||||
2005 | 46.20 | a | 44.32 | 50.26 | 63.55 | a | 74.17 | a | 81.37 | 88.32 | 80.10 | a | 77.87 | 66.58 | 57.53 | 47.53 | a | 64.82 | ||||||||
2006 | 48.63 | a | 53.46 | 52.45 | 68.47 | 78.03 | 86.10 | 84.29 | 76.10 | 67.64 | b | 59.52 | 52.89 | b | 39.38 | b | 63.91 | |||||||||
2007 | 37.17 | a | 43.04 | 55.26 | 60.37 | 67.58 | 83.28 | a | 85.97 | 82.65 | 77.59 | a | 68.39 | 60.37 | 40.93 | a | 63.55 | |||||||||
2008 | 38.81 | 44.69 | 55.45 | 63.83 | 71.37 | a | 83.34 | a | 82.55 | 81.81 | 76.30 | 67.26 | 55.83 | 44.34 | b | 63.80 | ||||||||||
2009 | 44.00 | a | 51.07 | 56.77 | 62.67 | 73.87 | 77.83 | 86.13 | 84.23 | 74.17 | 62.29 | 56.13 | 37.33 | a | 63.87 | |||||||||||
2010 | 39.50 | a | 40.07 | 49.55 | 62.41 | a | 68.61 | 83.43 | 83.29 | 79.58 | 79.27 | 66.70 | a | 51.13 | 50.46 | e | 62.83 | |||||||||
2011 | 41.90 | b | 42.29 | 57.90 | a | 63.93 | a | 67.90 | a | 84.77 | 84.81 | 83.10 | 75.30 | 64.97 | 51.27 | 39.76 | b | 63.16 | ||||||||
2012 | 46.64 | i | 45.41 | 55.84 | 66.97 | 75.97 | a | 87.27 | 83.90 | 82.10 | 77.00 | 68.74 | 56.93 | 44.03 | a | 67.65 | a | |||||||||
2013 | 38.47 | a | 41.14 | 56.10 | 61.97 | 72.00 | 86.50 | 82.73 | a | 80.55 | 75.20 | 61.73 | p | 51.13 | 43.80 | a | 62.69 | a | ||||||||
2014 | 49.27 | a | 50.36 | 55.48 | 61.93 | 70.10 | 84.37 | 84.10 | 79.10 | 78.20 | 67.84 | 54.77 | 44.07 | a | 64.96 | |||||||||||
2015 | 44.75 | c | 53.21 | 57.87 | 61.70 | 64.77 | 83.67 | 79.29 | 82.26 | 77.38 | a | 65.80 | a | 51.31 | a | 42.47 | a | 63.71 | ||||||||
2016 | 40.47 | a | 51.82 | a | 58.58 | 61.00 | 67.17 | b | 85.73 | 86.45 | b | 77.24 | b | 75.57 | b | 69.23 | 56.07 | b | 46.59 | b | 64.66 | |||||
2017 | 39.93 | a | 48.14 | 60.23 | 61.90 | a | 68.42 | 85.28 | a | 84.10 | 81.23 | a | 78.00 | 69.80 | a | 61.52 | g | 50.60 | a | 66.15 | a | |||||
2018 | 52.33 | d | 48.89 | 54.68 | 67.70 | 75.87 | 86.47 | 84.97 | 83.94 | 78.07 | 60.23 | 52.18 | b | 43.67 | j | 67.76 | a | |||||||||
2019 | ----- | z | 42.21 | 54.23 | 62.72 | a | 64.77 | 80.83 | 86.39 | 85.58 | 77.73 | 65.26 | 54.69 | a | 43.50 | a | 65.27 | a | ||||||||
2020 | 44.14 | b | 46.10 | 54.26 | 62.76 | i | 75.50 | i | 82.25 | r | 83.68 | l | 88.56 | m | 78.69 | n | 69.05 | i | 57.13 | 43.45 | 49.02 | g | ||||
2021 | 43.00 | 45.64 | 51.93 | a | 65.27 | 73.54 | c | 84.33 | 83.03 | 81.32 | 78.53 | 62.33 | a | 59.66 | a | 47.68 | c | 64.69 | ||||||||
2022 | 44.65 | 45.42 | b | 54.35 | 65.40 | 74.90 | 79.33 | 83.58 | 78.68 | 78.50 | 60.23 | 50.52 | a | 43.26 | 63.23 | |||||||||||
2023 | 39.14 | i | 40.63 | a | 45.94 | 58.37 | 71.29 | 80.38 | f | 91.37 | d | 80.41 | b | 80.95 | h | 70.75 | c | 53.67 | c | 44.60 | a | 61.89 | c | |||
2024 | 37.81 | 46.24 | 49.10 | 56.15 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.38 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.10 | 46.59 | 53.50 | 63.11 | 72.32 | 82.87 | 85.10 | 81.87 | 76.87 | 66.48 | 53.51 | 44.93 | 64.10 | |||||||||||||
S.D. | 3.70 | 4.28 | 4.11 | 3.38 | 3.14 | 2.54 | 2.30 | 2.36 | 2.53 | 3.53 | 3.69 | 3.71 | 1.13 | |||||||||||||
SKEW | 0.57 | -0.10 | -0.08 | -0.16 | -0.12 | -0.16 | 0.12 | -0.14 | -0.25 | -0.27 | -0.02 | 0.28 | 0.33 | |||||||||||||
MAX | 54.77 | 54.50 | 64.23 | 70.77 | 79.63 | 87.83 | 91.37 | 86.19 | 83.27 | 75.74 | 62.70 | 55.10 | 66.99 | |||||||||||||
MIN | 36.17 | 35.46 | 44.87 | 53.79 | 64.77 | 76.79 | 79.29 | 76.10 | 67.64 | 55.55 | 45.40 | 37.20 | 61.31 | |||||||||||||
YRS | 79 | 83 | 83 | 82 | 85 | 84 | 84 | 84 | 84 | 83 | 83 | 82 | 65 |