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 | 74.07 | a | 83.03 | 90.20 | 95.00 | 90.58 | 88.40 | 75.16 | 60.80 | 54.68 | 79.10 | c | ||||||||
1940 | 35.29 | 52.48 | 64.84 | 70.70 | 80.55 | 88.50 | 97.81 | 90.94 | 85.60 | ----- | z | ----- | z | ----- | z | 74.08 | c | |||||||||
1941 | ----- | z | ----- | z | 52.52 | 68.03 | 72.26 | 82.57 | 90.14 | b | 89.10 | b | 80.93 | 70.50 | g | 63.68 | b | 51.20 | a | 72.27 | c | |||||
1942 | 52.80 | a | 50.42 | b | 62.36 | c | 70.69 | d | ----- | z | 87.18 | h | 93.41 | d | 91.04 | e | 84.72 | e | 70.27 | e | 67.00 | e | 54.89 | c | 69.76 | b |
1943 | 53.14 | c | 61.21 | d | 67.64 | f | 78.69 | d | 77.50 | c | 91.24 | a | 92.97 | a | 96.60 | a | 85.93 | b | 75.54 | e | 63.04 | d | 40.33 | a | 74.20 | a |
1944 | ----- | z | 52.12 | c | ----- | z | 66.96 | f | 79.63 | d | 87.93 | 91.10 | 94.26 | 84.53 | 84.54 | e | 58.40 | 47.45 | 75.55 | c | ||||||
1945 | 48.90 | 59.58 | b | 64.16 | 60.48 | a | 80.77 | 86.37 | 86.90 | a | 91.07 | c | 87.48 | c | 71.12 | e | 59.90 | 48.88 | e | 70.47 | ||||||
1946 | 44.43 | c | 55.22 | a | 64.39 | 76.45 | a | 76.47 | a | 90.48 | a | 95.82 | c | 90.57 | a | 80.43 | b | 71.06 | 59.45 | a | 55.83 | a | 71.72 | |||
1947 | 47.67 | d | 47.26 | a | 55.33 | g | 67.00 | n | ----- | z | 88.47 | 94.39 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.13 | i | |
1948 | 44.55 | 43.69 | 51.20 | a | 75.90 | i | ----- | z | 90.50 | 95.29 | 90.81 | 88.23 | 75.81 | 54.92 | f | 53.70 | u | 72.51 | d | |||||||
1949 | 23.40 | u | 42.14 | u | 59.03 | a | 64.63 | 76.10 | 85.80 | 91.06 | 88.94 | 82.17 | 72.68 | 69.53 | 52.26 | 74.22 | b | |||||||||
1950 | 56.35 | 61.05 | g | 63.10 | 73.17 | a | ----- | z | 89.43 | 88.32 | 88.06 | 75.83 | 67.23 | e | ----- | z | 50.86 | b | 72.49 | c | ||||||
1951 | 46.50 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.50 | k |
1952 | ----- | z | 53.33 | k | 55.43 | a | 68.17 | 79.81 | 94.00 | 91.94 | 95.29 | 83.93 | 73.84 | ----- | z | ----- | z | 80.30 | d | |||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.32 | 88.94 | 89.30 | 74.16 | 60.40 | 47.71 | 75.64 | f | ||||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | 72.33 | a | 91.15 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.74 | j |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | 78.27 | a | 86.10 | 92.10 | 92.55 | ----- | z | ----- | z | 58.30 | ----- | z | 81.46 | g | ||||
1956 | ----- | z | ----- | z | 64.50 | a | 70.87 | 85.00 | 92.50 | 93.06 | 94.00 | a | 90.17 | 78.48 | 57.22 | g | 57.03 | 80.62 | c | |||||||
1957 | 48.94 | 59.22 | a | 55.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.77 | 52.37 | 59.97 | 57.30 | f | |||||
1958 | 50.16 | 49.93 | 43.90 | 62.67 | 79.84 | 91.55 | a | 90.23 | 92.45 | 83.33 | 71.81 | 60.53 | 52.39 | 69.07 | ||||||||||||
1959 | 42.13 | 52.64 | 60.35 | 69.55 | a | 80.58 | 90.83 | 90.16 | 92.03 | 85.67 | 67.45 | 56.97 | 50.29 | 69.89 | ||||||||||||
1960 | 41.84 | 42.00 | 55.42 | 74.63 | 81.03 | 88.73 | 86.52 | 91.16 | 82.70 | 70.77 | 61.50 | 44.71 | 68.42 | |||||||||||||
1961 | 50.77 | 51.82 | 59.29 | 67.90 | 81.00 | 85.97 | 88.52 | 88.55 | 79.87 | 73.65 | 49.47 | 46.81 | 68.63 | |||||||||||||
1962 | 42.68 | 60.86 | 59.90 | 70.40 | 86.55 | 84.67 | 89.94 | 93.26 | 81.20 | 75.32 | 61.43 | 54.17 | a | 71.70 | ||||||||||||
1963 | 42.90 | 56.25 | 64.77 | 77.27 | 83.39 | 86.87 | 94.97 | 92.13 | 85.10 | 81.03 | 63.47 | 43.13 | 72.61 | |||||||||||||
1964 | 51.71 | 41.83 | 58.84 | 72.17 | 83.58 | 88.10 | 96.61 | 91.45 | 80.67 | 74.71 | 56.70 | 48.94 | 70.44 | |||||||||||||
1965 | 54.84 | 51.44 | a | 49.16 | 73.83 | 78.55 | 82.83 | 90.84 | 89.55 | 81.53 | 74.13 | 66.27 | 55.13 | 70.68 | ||||||||||||
1966 | 41.16 | 47.04 | 65.06 | 70.20 | 82.13 | a | 87.80 | 97.68 | 85.61 | 81.30 | 72.10 | 64.63 | 48.45 | 70.26 | ||||||||||||
1967 | 54.19 | 54.79 | 67.55 | 74.23 | 76.77 | 83.67 | 87.58 | 87.00 | 81.23 | 76.74 | 58.77 | 45.90 | 70.70 | |||||||||||||
1968 | 48.29 | 51.34 | 61.65 | 68.10 | 73.00 | 87.43 | 89.58 | 88.29 | 83.80 | 75.90 | 55.00 | 48.58 | 69.25 | |||||||||||||
1969 | 53.84 | 51.39 | 47.58 | 71.23 | 78.58 | 84.53 | 93.23 | 92.65 | 80.67 | 63.90 | 59.23 | 51.58 | 69.03 | |||||||||||||
1970 | 47.45 | 56.54 | 54.63 | a | 66.79 | a | 82.81 | 87.97 | 92.06 | 91.71 | 81.57 | 65.45 | 58.67 | 57.16 | 70.23 | |||||||||||
1971 | 49.77 | 50.64 | 62.16 | 69.80 | 79.42 | 91.33 | 90.94 | 86.10 | 79.03 | 71.48 | 59.27 | 49.32 | 69.94 | |||||||||||||
1972 | 53.03 | 57.76 | 69.00 | 75.53 | 78.90 | 87.70 | 87.13 | 87.23 | 80.90 | 70.19 | 46.83 | 43.19 | 69.78 | |||||||||||||
1973 | 42.45 | 50.89 | 56.61 | 61.83 | 75.32 | 88.87 | 90.61 | 92.90 | 80.40 | 75.03 | 63.45 | a | 51.94 | 69.19 | ||||||||||||
1974 | 45.68 | 58.18 | 67.70 | a | 73.70 | 86.35 | 89.13 | 93.39 | 83.84 | 74.33 | 70.87 | 57.63 | 49.29 | 70.84 | ||||||||||||
1975 | 49.39 | 45.14 | 58.47 | a | 68.47 | 78.61 | 87.43 | 88.10 | 90.81 | 79.93 | 76.77 | 59.28 | a | 54.71 | 69.76 | |||||||||||
1976 | 52.10 | 61.31 | 61.33 | a | 71.43 | 72.87 | 88.40 | 89.35 | 91.52 | 80.60 | 65.03 | 55.63 | 53.13 | 70.23 | ||||||||||||
1977 | 40.87 | 57.79 | 63.39 | 68.47 | 80.10 | 93.33 | 94.45 | 89.94 | 86.63 | 75.29 | 62.62 | a | 53.68 | 72.21 | ||||||||||||
1978 | 39.03 | a | 37.96 | 59.65 | 76.00 | 75.10 | 88.00 | 96.90 | 90.32 | 83.67 | ----- | z | 55.27 | 45.68 | 67.96 | a | ||||||||||
1979 | 34.37 | a | 53.07 | 59.00 | 68.50 | 74.68 | 84.50 | 93.00 | 89.16 | 84.87 | 78.29 | 53.27 | 54.33 | a | 68.92 | |||||||||||
1980 | 47.06 | 49.86 | 58.74 | 67.13 | 73.97 | 92.53 | 99.35 | 93.26 | 84.07 | 73.87 | 56.83 | 56.17 | a | 71.07 | ||||||||||||
1981 | 53.16 | 57.46 | 59.48 | b | 76.00 | 76.71 | 92.40 | 93.61 | 86.94 | 82.50 | 69.65 | 62.67 | 53.94 | 72.04 | ||||||||||||
1982 | 52.58 | 47.93 | a | 60.61 | 70.10 | a | 76.61 | 81.63 | 91.55 | 90.52 | 85.07 | 71.90 | 57.63 | 47.10 | 69.44 | |||||||||||
1983 | 46.03 | 46.68 | 56.19 | 63.57 | 75.32 | 84.03 | 95.45 | 96.52 | 87.57 | 72.55 | 63.50 | 36.42 | 68.65 | |||||||||||||
1984 | 45.48 | 56.72 | 57.81 | 64.47 | 80.06 | 88.37 | 92.81 | 89.77 | 81.43 | 65.45 | 58.83 | 49.74 | 69.25 | |||||||||||||
1985 | 43.23 | 46.82 | 60.37 | a | 73.53 | 81.06 | 87.03 | 94.61 | 92.90 | 80.97 | 68.67 | a | 56.10 | 46.10 | 69.28 | |||||||||||
1986 | 57.87 | 51.61 | 66.97 | a | 73.17 | 78.61 | 85.33 | 94.13 | 88.39 | 80.87 | 66.80 | a | 55.37 | 45.97 | 70.42 | |||||||||||
1987 | 45.55 | 51.50 | 55.58 | 69.47 | 77.23 | 85.67 | 91.13 | 87.65 | 79.77 | 71.48 | 58.77 | 45.48 | 68.27 | |||||||||||||
1988 | 41.06 | 51.00 | 57.74 | 65.80 | 75.74 | 86.50 | 88.90 | 89.68 | 79.57 | 72.03 | 61.37 | 50.81 | 68.35 | |||||||||||||
1989 | 53.39 | 41.07 | 67.48 | 73.20 | 78.71 | 79.77 | 89.42 | 87.42 | 78.70 | 75.06 | 63.37 | 44.73 | a | 69.36 | ||||||||||||
1990 | 48.42 | 50.73 | b | 56.71 | 69.13 | 74.81 | 95.23 | 89.16 | 88.32 | 83.03 | 70.48 | 63.14 | a | 45.47 | a | 69.55 | ||||||||||
1991 | 40.55 | 60.11 | 62.16 | 71.73 | 80.71 | 86.07 | 87.73 | a | 87.52 | 77.90 | 73.55 | 51.10 | 46.61 | 68.81 | ||||||||||||
1992 | 48.55 | 55.55 | 64.26 | 70.83 | 75.23 | 81.43 | 89.29 | 83.97 | 81.47 | 73.90 | 49.73 | 46.00 | a | 68.35 | ||||||||||||
1993 | ----- | z | 47.36 | 59.84 | 67.57 | 76.19 | 86.33 | 91.39 | 89.29 | 82.37 | 67.97 | a | 54.73 | 51.29 | 70.39 | a | ||||||||||
1994 | 50.87 | a | 52.22 | a | 60.45 | 68.83 | 76.61 | 93.97 | 91.19 | 89.68 | 82.87 | 70.87 | 57.90 | 54.06 | 70.79 | |||||||||||
1995 | 47.77 | 60.85 | a | 61.52 | b | 65.93 | 72.42 | 84.14 | a | 90.90 | 90.68 | 79.93 | 75.61 | 63.15 | d | 50.57 | c | 70.29 | ||||||||
1996 | 51.87 | a | 56.72 | 58.82 | c | 71.76 | a | 83.93 | c | 90.67 | f | 88.44 | d | 85.48 | d | 76.93 | 70.71 | c | 57.07 | a | 50.76 | b | 68.41 | a | ||
1997 | 45.26 | 47.89 | 66.90 | 59.90 | a | 74.84 | 85.93 | 92.74 | 87.65 | 83.79 | b | 73.32 | l | 53.75 | f | 45.44 | f | 71.66 | c | |||||||
1998 | 52.79 | c | 55.33 | d | 56.70 | a | 67.04 | b | 84.97 | 92.83 | a | 95.10 | b | 88.81 | 90.63 | 72.54 | c | 60.37 | 52.00 | a | 72.42 | |||||
1999 | 52.23 | 61.29 | 57.10 | 67.50 | ----- | z | 85.37 | 90.97 | 91.55 | 79.40 | 71.77 | a | 67.27 | 50.97 | 70.49 | a | ||||||||||
2000 | 53.45 | 61.69 | 60.68 | 70.87 | 84.13 | 85.57 | 94.45 | 97.13 | 87.33 | 70.74 | 52.97 | a | 42.64 | i | 74.45 | a | ||||||||||
2001 | ----- | z | 50.40 | c | 55.73 | e | 75.30 | 77.97 | 90.03 | 96.81 | 91.81 | 83.78 | c | 73.81 | 60.59 | a | 52.71 | 73.54 | a | |||||||
2002 | 50.84 | ----- | z | 60.55 | 70.77 | 81.27 | a | 91.67 | 91.03 | 90.87 | 82.59 | a | 63.70 | a | ----- | z | 47.33 | a | 73.06 | b | ||||||
2003 | 52.81 | 50.18 | 62.00 | 71.93 | 80.97 | 82.50 | 95.84 | 93.26 | 80.40 | 74.23 | a | 57.53 | 52.81 | 71.20 | ||||||||||||
2004 | 51.06 | 51.55 | 65.68 | 67.14 | a | 83.42 | 86.60 | 86.52 | 86.94 | 82.87 | 69.87 | a | 52.64 | b | 52.13 | 69.70 | ||||||||||
2005 | 49.81 | 51.27 | b | 56.55 | 66.57 | ----- | z | 86.40 | 91.19 | 86.45 | 86.48 | a | 72.10 | a | 65.30 | 49.90 | 69.27 | a | ||||||||
2006 | 57.81 | 54.54 | 61.59 | b | 78.50 | 84.39 | 92.77 | 94.34 | b | 88.19 | 77.20 | 70.26 | 62.50 | f | 49.25 | s | 75.96 | b | ||||||||
2007 | 40.13 | 49.36 | 66.65 | 64.79 | b | 75.55 | b | 84.48 | a | 89.52 | 93.13 | 84.18 | b | 75.97 | 61.17 | 43.93 | a | 69.07 | ||||||||
2008 | 49.06 | 52.90 | 61.71 | 70.20 | 79.26 | 91.87 | 88.29 | 87.06 | 79.10 | 70.52 | 62.00 | 49.63 | a | 70.13 | ||||||||||||
2009 | 52.03 | b | 59.23 | b | 65.50 | c | 67.80 | 75.00 | 87.17 | g | 91.53 | a | 88.93 | a | 78.33 | 63.84 | 62.22 | l | 49.39 | m | 71.36 | c | ||||
2010 | 50.52 | b | 38.21 | 57.45 | 70.13 | 76.16 | 91.57 | 90.55 | 91.10 | 88.87 | 75.29 | g | ----- | z | 51.52 | 70.61 | b | |||||||||
2011 | 51.42 | g | 54.73 | f | 64.31 | b | 73.39 | b | 75.63 | l | 96.38 | f | 98.19 | 96.97 | 84.00 | b | 79.81 | j | ----- | z | 42.40 | k | 83.37 | g | ||
2012 | 55.38 | b | 49.48 | f | 68.59 | n | 77.14 | h | 82.28 | b | 93.08 | e | 95.33 | a | 93.10 | 84.83 | 69.00 | o | ----- | z | 47.85 | k | 84.00 | f | ||
2013 | 48.03 | 50.61 | e | 61.94 | 65.68 | b | 81.58 | 92.67 | 89.39 | 89.57 | c | 85.17 | 72.39 | 56.43 | 45.35 | 69.90 | ||||||||||
2014 | 48.32 | 47.37 | a | 61.42 | 71.04 | c | 80.58 | 88.17 | 89.55 | 92.52 | b | 80.40 | 75.06 | 56.83 | 48.39 | 69.97 | ||||||||||
2015 | 44.71 | 50.96 | 61.61 | 72.07 | 73.65 | 88.93 | 91.77 | 89.71 | 88.57 | 72.84 | 59.63 | 50.55 | 70.42 | |||||||||||||
2016 | 48.52 | 59.28 | 66.52 | 70.00 | 75.81 | 91.33 | 98.26 | 89.37 | a | 84.37 | 79.19 | 66.10 | 45.23 | i | 75.34 | a | ||||||||||
2017 | 48.16 | 61.21 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.69 | j | ||
2018 | 51.84 | 53.68 | 65.76 | f | 65.89 | b | 87.77 | 94.17 | 94.06 | 92.19 | 85.03 | a | 66.81 | 51.60 | 48.06 | 71.92 | a | |||||||||
2019 | 49.81 | 54.44 | a | 57.97 | 71.53 | 71.57 | x | 85.60 | o | 94.74 | h | 96.03 | a | 90.13 | 63.97 | a | 59.63 | c | 54.10 | a | 66.40 | c | ||||
2020 | 52.13 | a | 48.75 | a | 64.76 | b | 72.13 | 83.90 | 94.00 | 95.10 | 95.87 | 81.37 | 74.19 | 65.53 | 52.55 | 73.36 | ||||||||||
2021 | 49.35 | 43.11 | 61.55 | 68.94 | n | 73.29 | q | ----- | z | 90.80 | a | 93.03 | 89.89 | c | 76.79 | b | 65.61 | b | 62.43 | a | 70.29 | c | ||||
2022 | 52.30 | a | 48.62 | b | 62.93 | a | 75.17 | a | 83.90 | 89.57 | 98.65 | 91.19 | 89.60 | 72.03 | 55.03 | 57.87 | p | 74.45 | a | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 48.43 | 52.22 | 60.34 | 70.09 | 79.04 | 88.31 | 92.17 | 90.52 | 83.08 | 72.18 | 59.21 | 50.14 | 70.09 | |||||||||||||
S.D. | 5.01 | 5.72 | 4.78 | 4.03 | 3.82 | 3.52 | 3.15 | 2.94 | 3.60 | 4.10 | 4.66 | 4.50 | 1.21 | |||||||||||||
SKEW | -0.59 | -0.30 | -0.82 | -0.21 | 0.16 | -0.11 | 0.30 | 0.17 | 0.20 | 0.01 | -0.27 | -0.14 | 0.68 | |||||||||||||
MAX | 57.87 | 61.69 | 69.00 | 78.69 | 87.77 | 95.23 | 99.35 | 97.13 | 90.63 | 84.54 | 69.53 | 62.43 | 73.36 | |||||||||||||
MIN | 34.37 | 37.96 | 43.90 | 59.90 | 72.26 | 79.77 | 86.52 | 83.84 | 74.33 | 63.70 | 46.83 | 36.42 | 68.27 | |||||||||||||
YRS | 72 | 71 | 73 | 73 | 71 | 74 | 78 | 79 | 78 | 72 | 68 | 68 | 47 |