YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.57 | h | 80.27 | 69.42 | 49.97 | 45.83 | b | 61.37 | h | |||
1939 | 42.38 | b | 37.96 | 57.90 | 70.97 | 78.07 | a | 84.13 | 89.55 | 87.26 | 78.50 | 69.94 | ----- | z | ----- | z | 69.67 | b | ||||||||
1940 | ----- | z | ----- | z | ----- | z | 68.87 | 81.30 | a | 89.37 | 92.81 | d | 88.32 | 74.31 | d | 67.29 | 53.95 | h | 43.81 | o | 80.32 | e | ||||
1941 | ----- | z | 50.52 | g | 58.10 | 59.92 | e | 76.90 | 82.67 | 91.23 | a | 89.87 | 81.93 | a | 68.32 | 56.53 | 47.33 | d | 71.28 | b | ||||||
1942 | 47.00 | 43.29 | 56.16 | 67.47 | 77.10 | 87.77 | 94.10 | 92.03 | b | 85.60 | 71.61 | 59.77 | 53.50 | a | 69.62 | |||||||||||
1943 | 50.62 | b | 60.45 | q | 63.22 | d | 77.83 | 77.67 | g | 85.23 | 93.68 | 89.26 | 87.96 | f | 72.72 | b | 58.19 | d | 39.85 | e | 70.07 | c | ||||
1944 | 36.77 | 41.79 | 52.97 | a | 59.47 | 74.71 | 80.60 | 90.13 | 90.68 | 84.97 | 71.87 | p | 47.83 | g | 46.26 | 65.83 | b | |||||||||
1945 | 45.07 | a | 48.96 | a | 51.70 | h | 61.67 | 76.55 | 81.63 | 91.23 | 87.90 | 80.69 | a | 68.82 | i | 51.94 | n | 39.10 | 68.09 | c | ||||||
1946 | 39.40 | a | 49.19 | a | 58.77 | 68.85 | q | 73.73 | e | 89.93 | 92.17 | a | 88.06 | 82.00 | 61.77 | a | 46.47 | k | 46.65 | n | 70.56 | c | ||||
1947 | 42.77 | 54.17 | d | 62.52 | 66.14 | a | 79.74 | 80.83 | 92.48 | 86.74 | 84.53 | 72.05 | i | ----- | z | 39.62 | j | 72.21 | c | |||||||
1948 | 41.68 | 44.21 | 47.68 | l | 69.00 | c | 79.30 | a | 85.19 | d | 92.16 | 88.84 | 84.47 | 65.17 | m | 55.00 | t | 43.00 | d | 69.76 | c | |||||
1949 | 30.26 | 35.61 | 56.03 | 69.43 | 75.04 | d | 77.25 | n | 91.50 | e | 89.20 | f | 82.19 | i | 60.35 | h | 60.03 | 41.28 | f | 59.70 | e | |||||
1950 | 45.27 | t | 49.89 | 58.58 | 67.25 | v | 72.88 | g | 87.90 | 87.65 | 89.13 | 79.90 | 74.97 | 58.40 | 49.48 | 70.66 | c | |||||||||
1951 | 45.67 | m | 43.64 | 55.74 | 68.55 | j | 72.68 | 82.43 | 93.00 | 84.42 | 82.48 | c | 65.07 | a | 39.00 | s | 37.13 | 68.51 | c | |||||||
1952 | 39.28 | f | 44.42 | c | 48.16 | 67.31 | d | 76.84 | 84.40 | 92.23 | 88.71 | 83.17 | 75.39 | 52.94 | n | 40.04 | c | 70.07 | b | |||||||
1953 | 47.55 | 49.04 | 60.00 | 66.30 | 73.38 | e | 87.90 | 91.00 | 85.97 | 85.42 | f | ----- | z | 53.70 | 42.45 | 65.73 | b | |||||||||
1954 | 44.74 | 59.57 | 56.94 | 76.11 | l | 81.06 | 88.00 | 95.58 | 91.61 | 82.30 | 74.24 | j | ----- | z | 38.16 | 70.89 | c | |||||||||
1955 | 36.65 | 36.14 | 55.64 | f | 68.46 | d | 76.71 | 86.10 | 93.87 | 89.65 | 86.90 | 72.53 | a | 54.36 | h | 47.39 | 69.44 | b | ||||||||
1956 | 49.48 | 48.24 | 63.45 | 67.13 | 80.06 | 90.40 | 90.19 | 87.10 | 85.10 | 67.87 | 48.50 | 41.26 | 68.23 | |||||||||||||
1957 | 40.13 | 47.78 | a | 59.23 | 62.24 | a | 69.45 | 84.77 | 87.84 | 85.00 | 79.87 | 62.13 | 45.33 | 44.03 | 63.98 | |||||||||||
1958 | 41.58 | 50.68 | 49.77 | 62.90 | 80.03 | 89.37 | 91.61 | 91.97 | 80.17 | 68.94 | 54.03 | 50.52 | 67.63 | |||||||||||||
1959 | 43.52 | 48.86 | 59.03 | 70.69 | a | 73.71 | c | 89.13 | 92.58 | 83.17 | h | 77.33 | 67.40 | a | 57.04 | d | 42.45 | 65.61 | a | |||||||
1960 | 34.13 | a | 41.14 | a | 60.33 | d | 68.23 | 75.03 | b | 88.63 | 91.68 | 89.90 | 79.59 | c | 64.26 | 53.70 | c | 41.00 | e | 65.64 | ||||||
1961 | 43.89 | c | 51.33 | a | 54.97 | 65.90 | 76.48 | 88.77 | 89.77 | a | 83.52 | 71.70 | 64.58 | 49.82 | b | 36.55 | 64.77 | |||||||||
1962 | 42.00 | a | 49.07 | a | 50.74 | 71.33 | 73.19 | 84.40 | 89.19 | 88.87 | 79.59 | a | 68.10 | 58.69 | a | 45.90 | b | 66.76 | ||||||||
1963 | 31.35 | 53.32 | 53.35 | 62.82 | b | 79.81 | 81.86 | a | 92.23 | 84.61 | 80.87 | 72.39 | 54.50 | 41.53 | a | 65.72 | ||||||||||
1964 | 39.73 | a | 45.17 | 48.68 | 62.57 | 74.10 | 82.73 | 93.39 | 88.61 | 81.39 | b | 74.42 | 49.53 | 43.42 | 65.31 | |||||||||||
1965 | 45.23 | 46.70 | a | 52.03 | 60.97 | a | 69.23 | a | 79.60 | 87.32 | 87.00 | 76.23 | 72.42 | 57.13 | 41.19 | 64.59 | ||||||||||
1966 | 37.84 | 40.32 | 60.19 | 69.70 | 80.58 | 86.63 | 92.19 | 91.42 | 81.50 | 68.48 | 55.93 | 42.06 | 67.24 | |||||||||||||
1967 | 40.52 | 52.50 | 63.00 | m | 61.40 | 73.97 | 80.80 | 91.97 | 90.77 | 82.03 | a | 74.26 | 57.43 | 35.55 | 67.38 | a | ||||||||||
1968 | 35.13 | 50.72 | 58.42 | 60.73 | 74.87 | 89.00 | 90.10 | 83.42 | 80.45 | a | 69.19 | 52.30 | 37.39 | 65.14 | ||||||||||||
1969 | 44.90 | a | 43.36 | 51.23 | 67.90 | 80.71 | c | 82.60 | 92.94 | 93.23 | 82.97 | 60.13 | a | 53.07 | 45.40 | a | 66.54 | |||||||||
1970 | 44.45 | 52.96 | 55.16 | 61.50 | 79.00 | 85.73 | 91.45 | 91.84 | 80.60 | 65.39 | 54.77 | 43.19 | 67.17 | |||||||||||||
1971 | 44.10 | 47.75 | 56.71 | 66.50 | 73.58 | 88.10 | 95.65 | 90.48 | 80.00 | 64.48 | 47.87 | 37.39 | 66.05 | |||||||||||||
1972 | 45.45 | 53.28 | 66.90 | 69.13 | 78.97 | 87.73 | 93.61 | 88.97 | 81.60 | 63.84 | 47.00 | 37.52 | 67.83 | |||||||||||||
1973 | 30.71 | 42.29 | 50.94 | 62.20 | 78.26 | 87.73 | 92.39 | 90.68 | 82.83 | 71.52 | 53.57 | 44.81 | 65.66 | |||||||||||||
1974 | 31.81 | 41.79 | 62.97 | 65.00 | 82.48 | 92.93 | 92.10 | 92.13 | 83.37 | 69.68 | 52.57 | 41.29 | 67.34 | |||||||||||||
1975 | 40.42 | 45.50 | 54.71 | 58.37 | 72.65 | 83.97 | 93.23 | 90.19 | 82.87 | 68.90 | 52.97 | 42.32 | 65.51 | |||||||||||||
1976 | 42.13 | 52.52 | 55.16 | 66.13 | 78.03 | 87.77 | 94.65 | 90.00 | 81.00 | 68.39 | 57.90 | 45.03 | 68.23 | |||||||||||||
1977 | 42.23 | 54.68 | 56.16 | 71.13 | 73.06 | 91.23 | 92.73 | a | 90.48 | 84.07 | 72.03 | a | 56.97 | 49.90 | 69.56 | |||||||||||
1978 | 40.84 | 45.89 | 60.61 | 67.00 | 75.16 | 89.93 | 94.74 | 92.35 | 81.73 | 73.87 | 51.37 | 34.68 | 67.35 | |||||||||||||
1979 | 30.35 | 39.64 | 54.10 | 67.00 | 75.87 | 88.45 | a | 95.94 | 90.61 | 89.10 | 75.13 | 48.00 | 42.35 | 66.38 | ||||||||||||
1980 | 42.42 | 51.55 | 53.16 | 66.87 | 71.55 | 89.33 | 95.06 | 90.90 | 81.48 | a | 69.77 | 56.80 | 52.77 | 68.47 | ||||||||||||
1981 | 50.45 | 53.32 | 56.45 | 72.43 | 76.13 | 92.63 | 94.39 | 90.87 | 82.67 | 65.52 | 56.70 | 45.19 | 69.73 | |||||||||||||
1982 | 41.32 | 43.54 | 56.19 | 65.28 | a | 74.52 | 83.66 | a | 91.35 | 87.20 | a | 79.63 | 64.29 | 50.07 | 41.48 | 64.88 | ||||||||||
1983 | 43.23 | 51.21 | 55.74 | 59.50 | 73.43 | a | 83.30 | 90.80 | a | 90.23 | 85.38 | a | 70.83 | a | 54.33 | 41.68 | 66.64 | |||||||||
1984 | 39.61 | 45.79 | a | 56.94 | 64.25 | b | 82.57 | a | 85.77 | 90.55 | 86.83 | b | 83.63 | 62.86 | c | 51.66 | a | 39.61 | 65.84 | |||||||
1985 | 40.32 | 43.61 | 54.48 | 69.87 | 76.00 | a | 90.79 | a | 91.31 | b | 92.13 | 77.93 | a | 66.79 | b | 51.50 | b | 44.79 | b | 66.63 | ||||||
1986 | 46.87 | 53.21 | 63.25 | c | 66.35 | d | 76.56 | f | 89.92 | d | 89.84 | 88.39 | 75.27 | 63.00 | b | 52.72 | a | 42.44 | d | 66.48 | a | |||||
1987 | 37.64 | c | 44.42 | b | 53.27 | a | 68.85 | c | 73.76 | b | 87.63 | 87.89 | c | 86.81 | 80.73 | 70.58 | 49.40 | 38.74 | 64.98 | |||||||
1988 | 35.71 | 47.28 | 56.03 | a | 66.57 | 75.90 | a | 88.10 | 93.39 | 88.50 | a | 80.40 | 74.03 | a | 53.40 | 41.71 | c | 66.75 | ||||||||
1989 | 34.33 | a | 42.79 | 64.64 | c | 74.59 | a | 78.37 | a | 84.25 | b | 93.45 | 86.65 | 81.93 | a | 68.71 | 57.63 | 47.07 | b | 67.87 | ||||||
1990 | 43.37 | a | 48.59 | a | 59.55 | b | 68.93 | 75.39 | 90.93 | b | 90.10 | a | 87.58 | 82.34 | a | 68.00 | c | 52.83 | 36.66 | b | 67.02 | |||||
1991 | 34.84 | 51.19 | b | 52.90 | a | 63.07 | a | 73.03 | b | 83.21 | a | 90.23 | 87.70 | a | 80.23 | 71.06 | 48.07 | b | 37.17 | b | 64.39 | |||||
1992 | 34.27 | a | 46.50 | a | 57.03 | a | 73.04 | c | 76.57 | c | 84.04 | b | 88.58 | 88.35 | 82.70 | 71.00 | 46.63 | 34.77 | e | 65.29 | ||||||
1993 | 38.23 | 42.64 | c | 58.66 | b | 66.50 | b | 75.00 | c | 83.81 | c | 91.13 | a | 86.23 | a | 81.97 | a | 64.10 | b | 46.82 | b | 39.70 | d | 64.57 | ||
1994 | 45.80 | a | 42.43 | 61.52 | b | 64.33 | c | 74.90 | b | 91.17 | 93.52 | 90.03 | a | 79.87 | 64.07 | a | 44.79 | b | 39.24 | b | 65.97 | |||||
1995 | 38.58 | 55.19 | a | 55.40 | a | 61.61 | b | 68.35 | 78.47 | 90.10 | 89.87 | 80.77 | 67.84 | 58.31 | a | 47.48 | b | 66.00 | ||||||||
1996 | 46.11 | c | 51.54 | a | 59.03 | a | 66.73 | 79.52 | 89.50 | 93.26 | 90.26 | 75.67 | 63.13 | 49.80 | 43.79 | c | 67.36 | |||||||||
1997 | 39.14 | b | 42.41 | a | 60.74 | 60.04 | c | 77.39 | 84.57 | 87.90 | 84.87 | 75.63 | 66.52 | b | 51.26 | c | 40.23 | 64.22 | ||||||||
1998 | 45.52 | 43.41 | a | 56.10 | a | 60.30 | 72.61 | 82.41 | a | 91.16 | 89.55 | 78.07 | a | 62.87 | a | 51.17 | a | 42.07 | b | 64.60 | ||||||
1999 | 49.00 | a | 50.74 | a | 61.13 | 57.97 | a | 72.87 | 83.63 | 89.39 | 83.16 | 76.97 | 70.40 | a | 56.03 | 43.90 | 66.27 | |||||||||
2000 | 46.32 | 49.76 | 56.33 | a | 72.47 | 82.47 | a | 87.67 | 93.60 | a | 88.39 | 80.67 | 64.00 | b | 42.57 | 43.67 | a | 67.33 | ||||||||
2001 | 38.35 | 43.25 | 56.74 | 64.43 | 78.50 | a | 88.46 | b | 89.94 | 87.47 | a | 84.40 | 69.48 | 53.57 | 38.31 | b | 66.08 | |||||||||
2002 | 39.13 | a | 46.32 | 56.04 | c | 70.83 | 76.97 | 90.43 | 94.10 | 89.84 | 75.97 | 62.58 | 49.07 | a | 41.97 | 66.10 | ||||||||||
2003 | 47.45 | 45.93 | 57.00 | 64.03 | a | 76.29 | 86.23 | 96.77 | 88.65 | 80.63 | 72.19 | 47.17 | 42.38 | b | 67.06 | |||||||||||
2004 | 37.48 | 40.79 | a | 64.40 | a | 63.89 | b | 76.29 | 84.87 | 90.45 | 85.94 | 77.28 | a | 62.87 | a | 45.54 | b | 40.74 | 64.21 | |||||||
2005 | 43.84 | 46.21 | 55.70 | d | 64.43 | 74.90 | 80.67 | 94.32 | 84.19 | 78.57 | 65.33 | a | 53.90 | a | 42.89 | c | 65.41 | |||||||||
2006 | 44.10 | a | 49.57 | 51.03 | b | 67.37 | 78.26 | 89.62 | a | 91.32 | 85.42 | 74.83 | a | 60.16 | 51.16 | e | 39.21 | b | 65.17 | |||||||
2007 | 39.83 | a | 51.59 | a | 59.79 | b | 65.43 | 76.16 | 90.45 | a | 93.48 | 88.81 | 79.07 | 64.60 | a | 55.71 | b | 36.97 | b | 66.82 | ||||||
2008 | 36.07 | a | 47.66 | 55.81 | 63.69 | a | 72.38 | b | 87.23 | 92.81 | 89.00 | 80.48 | a | 67.57 | a | 55.79 | b | 39.14 | b | 65.63 | ||||||
2009 | 43.73 | a | 48.39 | 58.61 | 62.70 | 77.13 | 79.69 | a | 92.81 | 88.35 | 80.69 | a | 63.65 | 54.39 | b | 33.00 | 65.26 | |||||||||
2010 | 36.03 | 37.48 | a | 52.27 | a | 63.23 | 68.74 | 85.76 | a | 91.16 | 85.42 | 84.10 | a | 64.16 | 48.30 | 44.58 | 63.44 | |||||||||
2011 | 37.58 | 43.07 | 56.35 | 62.27 | 68.00 | 84.77 | 87.03 | 89.13 | 79.90 | 66.84 | 48.93 | 38.32 | 63.52 | |||||||||||||
2012 | 44.40 | a | 45.69 | 60.52 | 68.87 | 78.39 | 90.90 | 89.23 | 89.03 | 80.93 | 68.55 | 54.63 | 40.65 | 67.65 | ||||||||||||
2013 | 33.39 | 43.18 | 57.40 | a | 64.00 | 73.94 | 90.43 | 90.68 | 85.00 | 76.97 | 62.90 | 49.13 | 33.84 | 63.40 | ||||||||||||
2014 | 45.10 | 52.79 | 58.06 | 63.47 | 72.13 | 86.87 | 92.32 | 83.77 | 81.20 | 69.45 | 51.77 | 42.48 | 66.62 | |||||||||||||
2015 | 40.97 | a | 54.00 | a | 60.06 | 63.63 | 69.61 | 87.60 | 87.42 | 87.68 | 82.59 | a | 66.76 | b | 49.10 | 36.93 | a | 65.53 | ||||||||
2016 | 38.71 | 46.86 | 59.77 | 64.20 | 70.48 | 91.86 | a | 90.13 | 86.55 | 77.87 | 68.13 | 55.38 | a | 40.32 | 65.86 | |||||||||||
2017 | 38.68 | 52.86 | 62.52 | 63.63 | 73.32 | 90.77 | 91.65 | 87.84 | 77.07 | 65.23 | 58.97 | a | 47.97 | 67.54 | ||||||||||||
2018 | 45.06 | 51.21 | 55.61 | 68.59 | a | 75.39 | 90.97 | 92.74 | 91.06 | 84.97 | 59.68 | 49.03 | 38.94 | 66.94 | ||||||||||||
2019 | 39.45 | 38.79 | 53.32 | 67.07 | 64.42 | 83.00 | 90.77 | 91.39 | 82.60 | 62.13 | 52.80 | 38.97 | b | 63.73 | ||||||||||||
2020 | 35.81 | 46.17 | 55.52 | 64.77 | 78.26 | 85.52 | a | 91.16 | 94.39 | 81.97 | 72.19 | 53.57 | 40.61 | 66.66 | ||||||||||||
2021 | 40.77 | 48.00 | a | 53.77 | 65.60 | 75.90 | 90.17 | 91.19 | 87.77 | 80.37 | 60.45 | 56.63 | 43.65 | 66.19 | ||||||||||||
2022 | 43.58 | 45.75 | 56.97 | 66.57 | 74.77 | 86.33 | 90.35 | 87.16 | 82.90 | 65.87 | 47.03 | 40.68 | 65.66 | |||||||||||||
2023 | 40.13 | 40.86 | 47.97 | 63.23 | 73.39 | 81.30 | 95.74 | 87.65 | 80.83 | 69.10 | 53.07 | 44.65 | 64.83 | |||||||||||||
2024 | 43.81 | 47.93 | 55.10 | 63.53 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.94 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.91 | 46.97 | 56.90 | 65.76 | 75.55 | 86.49 | 91.75 | 88.53 | 80.82 | 67.55 | 52.58 | 41.82 | 66.16 | |||||||||||||
S.D. | 4.76 | 4.87 | 3.91 | 3.87 | 3.55 | 3.48 | 2.14 | 2.44 | 3.00 | 4.02 | 4.04 | 4.14 | 1.46 | |||||||||||||
SKEW | -0.27 | -0.09 | 0.02 | 0.39 | -0.37 | -0.27 | -0.08 | -0.20 | -0.32 | 0.05 | -0.19 | 0.44 | 0.28 | |||||||||||||
MAX | 50.62 | 59.57 | 66.90 | 77.83 | 82.57 | 92.93 | 96.77 | 94.39 | 89.10 | 75.39 | 60.03 | 53.50 | 69.73 | |||||||||||||
MIN | 30.26 | 35.61 | 47.97 | 57.97 | 64.42 | 78.47 | 87.03 | 83.16 | 71.70 | 59.68 | 42.57 | 33.00 | 63.40 | |||||||||||||
YRS | 81 | 83 | 81 | 81 | 82 | 84 | 85 | 83 | 83 | 79 | 75 | 81 | 66 |