YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | 79.26 | c | 84.62 | e | 91.82 | b | 90.65 | 94.97 | 83.80 | 74.23 | 63.76 | a | 53.13 | a | 79.58 | c | ||||
1963 | 48.62 | b | 57.21 | 64.48 | 73.76 | m | 83.61 | 87.03 | 93.29 | 90.52 | 86.83 | a | 78.89 | c | 62.17 | a | 51.68 | 73.12 | a | |||||||
1964 | 48.11 | c | 46.00 | 59.81 | 70.87 | 83.35 | 91.00 | 94.94 | 91.74 | 84.60 | 79.00 | 61.33 | 49.87 | 71.72 | ||||||||||||
1965 | 52.45 | 53.85 | a | 61.03 | 72.10 | 79.94 | 88.67 | 92.23 | 88.65 | 80.79 | a | 75.27 | a | 65.25 | b | 50.55 | 71.73 | |||||||||
1966 | 44.87 | 48.96 | a | 65.65 | 75.70 | 84.65 | 89.43 | 94.61 | 90.87 | a | 84.10 | 75.29 | 65.30 | 52.06 | 72.62 | |||||||||||
1967 | 52.64 | c | 59.14 | 71.42 | 75.27 | 82.42 | 87.13 | 92.90 | 88.68 | 81.63 | 77.13 | 64.13 | 47.10 | a | 73.30 | |||||||||||
1968 | 51.39 | 58.93 | 60.97 | 70.33 | 81.48 | 91.47 | 90.90 | 86.58 | 84.40 | 77.58 | 60.00 | 47.58 | 71.80 | |||||||||||||
1969 | 56.19 | 55.89 | 57.55 | 75.37 | 81.55 | 89.30 | 93.39 | 91.94 | 84.40 | 72.10 | 58.80 | 53.35 | 72.49 | |||||||||||||
1970 | 49.72 | b | 57.82 | 59.13 | 71.00 | 83.32 | 87.77 | 92.03 | 90.65 | 81.77 | 68.39 | 62.73 | 53.90 | a | 71.52 | |||||||||||
1971 | 51.87 | 57.42 | b | 66.52 | 72.10 | 80.39 | 92.10 | 93.06 | 88.19 | 81.90 | a | 70.93 | a | 59.60 | 43.45 | 71.46 | ||||||||||
1972 | 53.42 | 60.42 | c | 73.03 | 75.97 | 81.55 | 88.17 | 91.77 | 88.10 | 81.50 | 73.25 | c | 54.90 | 51.10 | b | 72.77 | ||||||||||
1973 | 45.33 | a | 49.82 | 58.26 | d | 65.40 | 77.52 | 88.07 | a | 90.29 | 89.97 | 84.20 | 76.29 | 66.20 | 54.48 | b | 70.49 | |||||||||
1974 | 52.29 | g | 54.71 | 71.06 | 74.20 | 85.58 | 93.80 | 90.52 | 85.74 | 79.41 | a | 71.16 | 59.50 | 47.96 | f | 76.57 | b | |||||||||
1975 | 47.93 | c | 54.36 | 65.08 | f | 68.57 | 77.77 | 89.37 | 88.29 | 89.65 | 78.23 | 75.41 | b | 61.38 | d | 52.31 | e | 71.21 | a | |||||||
1976 | 51.24 | n | 65.67 | t | 65.16 | 72.53 | 79.23 | 90.38 | a | 91.35 | 92.97 | 82.10 | 70.81 | 59.14 | a | 49.07 | a | 75.27 | b | |||||||
1977 | 47.48 | 57.96 | 60.77 | 73.20 | 81.65 | 92.47 | 92.06 | 92.35 | 85.27 | 75.97 | 65.10 | 57.42 | 73.48 | |||||||||||||
1978 | 51.84 | 53.82 | 66.35 | 77.00 | 79.79 | b | 92.57 | 95.42 | 89.97 | 83.50 | 76.03 | 59.50 | 48.71 | 72.88 | ||||||||||||
1979 | 45.45 | 53.61 | 63.16 | 71.41 | a | 77.52 | 85.48 | a | 91.71 | 86.81 | 86.97 | 79.45 | 56.63 | 55.45 | 71.14 | |||||||||||
1980 | 53.48 | 59.38 | 62.81 | 71.17 | 79.55 | 96.03 | 98.03 | 89.86 | c | 85.00 | a | 73.55 | 61.90 | 58.16 | 74.08 | |||||||||||
1981 | 57.43 | a | 65.85 | a | 64.97 | 81.17 | 85.39 | 100.75 | j | 98.90 | 95.77 | 87.57 | 75.30 | a | 67.60 | 59.42 | 76.31 | a | ||||||||
1982 | 55.94 | 58.11 | a | 67.10 | 76.90 | 83.87 | 95.90 | 99.07 | a | 93.87 | 86.60 | 75.81 | 60.07 | b | 48.47 | a | 75.14 | |||||||||
1983 | 48.97 | 56.11 | 64.94 | 69.55 | a | 84.10 | 93.83 | 97.81 | 95.58 | 89.43 | 74.50 | a | 63.47 | 55.13 | 74.45 | |||||||||||
1984 | 52.23 | a | 60.97 | 68.32 | 73.97 | 91.52 | 93.87 | 97.16 | 91.19 | 87.47 | 67.23 | a | 61.07 | 47.65 | 74.39 | |||||||||||
1985 | 47.90 | 55.71 | 66.26 | 77.60 | 84.26 | 96.40 | 98.81 | 95.71 | 84.13 | 72.87 | 63.30 | 55.29 | 74.85 | |||||||||||||
1986 | 59.65 | 62.79 | 71.10 | 78.03 | 85.63 | a | 92.43 | 93.29 | 94.52 | 85.20 | 71.61 | 59.32 | b | 51.52 | 75.42 | |||||||||||
1987 | 48.13 | 55.75 | 63.84 | 76.47 | 82.55 | 94.33 | 97.74 | 92.29 | 86.47 | 80.29 | 62.17 | 53.26 | 74.44 | |||||||||||||
1988 | 49.90 | 62.38 | 69.13 | 76.77 | 85.32 | 94.20 | 97.06 | 89.06 | 82.50 | 80.32 | 64.53 | 50.77 | 75.16 | |||||||||||||
1989 | 52.68 | 61.00 | 75.39 | 83.63 | 89.77 | 96.17 | 97.61 | 92.84 | 87.83 | 74.81 | 65.03 | 54.23 | 77.58 | |||||||||||||
1990 | 53.32 | 59.61 | 68.74 | 76.77 | 85.06 | 100.80 | 95.29 | 92.65 | 86.87 | 78.58 | 63.43 | 51.77 | 76.07 | |||||||||||||
1991 | 51.00 | 63.57 | 66.41 | b | 78.00 | 87.42 | 94.33 | 95.06 | 92.03 | 85.43 | 80.42 | 61.80 | 50.97 | 75.54 | ||||||||||||
1992 | 47.03 | 59.10 | 68.55 | 81.23 | 82.42 | 92.70 | 95.52 | 93.86 | b | 90.00 | 80.10 | 58.87 | 48.71 | 74.84 | ||||||||||||
1993 | 55.97 | 60.96 | a | 69.48 | 77.93 | a | 86.55 | 95.03 | 99.32 | 94.10 | a | 88.37 | 77.13 | 63.97 | a | 56.21 | b | 77.08 | ||||||||
1994 | 59.07 | a | 61.21 | 71.50 | a | 78.17 | 86.10 | 101.93 | 101.35 | 97.52 | 88.23 | 75.90 | a | 63.43 | 56.80 | a | 78.43 | |||||||||
1995 | 54.68 | 67.59 | a | 70.94 | 76.07 | 84.94 | 94.70 | 99.03 | 99.26 | 90.52 | a | 82.13 | 69.62 | a | 59.67 | a | 79.09 | |||||||||
1996 | 59.80 | a | 67.03 | 70.66 | b | 82.34 | a | 94.94 | 98.57 | 98.13 | a | 94.33 | a | 85.62 | a | 76.87 | 65.63 | 57.83 | b | 79.31 | ||||||
1997 | 54.16 | 60.74 | a | 74.77 | a | 74.66 | a | 88.68 | 95.07 | 97.61 | 95.13 | a | 90.90 | 78.19 | 64.03 | a | 48.55 | b | 76.87 | |||||||
1998 | 56.32 | 58.75 | 68.45 | 74.70 | 88.26 | 97.97 | 97.63 | a | 98.53 | a | 95.87 | 79.16 | 67.07 | 58.94 | 78.47 | |||||||||||
1999 | 62.50 | a | 67.96 | b | 73.87 | 78.07 | 86.65 | 95.67 | 96.35 | 92.70 | a | 88.45 | a | 81.71 | 71.80 | 53.73 | a | 79.12 | ||||||||
2000 | 61.10 | 67.76 | 71.07 | a | 81.90 | 92.90 | 95.07 | b | 98.35 | 96.84 | 93.93 | 72.75 | c | 55.97 | 56.33 | a | 78.66 | |||||||||
2001 | 49.57 | a | 62.93 | 67.97 | a | 80.83 | a | 91.14 | b | 98.83 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.21 | f | ||
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 82.24 | m | 73.10 | b | 60.28 | a | 49.64 | c | 61.01 | i |
2003 | 60.32 | c | 57.08 | b | 66.31 | e | 76.54 | d | 87.37 | a | 92.46 | b | 101.29 | c | 94.25 | c | 87.72 | a | 78.55 | 62.00 | c | 53.36 | c | 76.44 | ||
2004 | 53.18 | i | 55.00 | 69.93 | b | 70.29 | b | 86.22 | d | 92.93 | b | 94.09 | i | 88.48 | h | 84.64 | e | 72.87 | a | 58.00 | a | 49.90 | k | 73.73 | d | |
2005 | 56.11 | c | 55.54 | d | 62.64 | f | 75.31 | q | 85.09 | h | 93.85 | j | 97.57 | q | 93.04 | h | 88.36 | b | 73.28 | b | 65.30 | 56.23 | 65.80 | f | ||
2006 | 56.90 | a | 61.54 | 67.35 | e | 80.81 | i | 89.31 | e | 95.23 | d | 93.59 | b | 87.00 | b | 80.12 | d | 71.88 | e | 64.65 | d | 48.07 | b | 74.15 | a | |
2007 | 44.46 | e | 59.08 | d | 68.52 | d | 74.31 | d | 81.07 | b | 94.52 | i | 95.17 | a | 96.32 | l | 87.52 | g | 79.08 | g | 65.00 | d | 50.00 | c | 67.20 | d |
2008 | 49.84 | ----- | z | 68.54 | e | 77.78 | l | 83.50 | e | 95.46 | b | 91.15 | d | 91.96 | d | 84.00 | f | 76.96 | h | 63.60 | e | 54.23 | e | 74.79 | d | |
2009 | 58.03 | b | 66.05 | g | 70.32 | i | 76.22 | g | 85.52 | d | ----- | z | 96.09 | h | ----- | z | ----- | z | ----- | z | 64.36 | e | ----- | z | 69.30 | i |
2010 | 49.57 | c | 54.21 | d | 63.18 | i | 73.95 | i | 86.82 | n | 96.41 | h | 94.79 | g | 92.86 | j | ----- | z | ----- | z | ----- | z | ----- | z | 51.89 | j |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 95.67 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | 90.10 | j | 97.71 | m | 91.48 | b | 90.96 | f | 83.74 | c | 73.67 | g | 59.60 | e | 51.09 | i | 78.27 | i |
2014 | 56.09 | i | 61.00 | r | 73.86 | x | 72.78 | u | 84.76 | j | 96.32 | k | 93.62 | e | 89.76 | j | 84.30 | 76.46 | c | 63.67 | f | 54.24 | j | 84.79 | i | |
2015 | 49.19 | j | 64.56 | l | 69.27 | p | 79.14 | w | 77.42 | s | 95.00 | s | ----- | z | ----- | z | 90.31 | d | 74.33 | v | ----- | z | ----- | z | 90.31 | k |
2016 | ----- | z | ----- | z | ----- | z | 78.88 | v | 83.39 | h | 95.35 | g | 98.14 | i | 88.33 | j | 86.32 | e | 83.31 | r | ----- | z | ----- | z | 86.32 | k |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 96.44 | n | 94.50 | w | 93.00 | n | 87.00 | h | 72.04 | e | 60.89 | l | ----- | z | 72.04 | k |
2019 | 51.22 | v | ----- | z | 70.07 | c | 75.94 | m | 81.11 | d | 91.14 | a | 96.75 | c | 96.55 | 88.93 | c | 74.68 | 61.54 | f | 52.43 | c | 81.46 | d | ||
2020 | 54.43 | h | 60.10 | i | 69.00 | g | 78.52 | e | 87.83 | b | 95.32 | e | 96.67 | g | 97.54 | e | 86.25 | b | 78.76 | b | 66.90 | j | 54.39 | m | 87.37 | f |
2021 | 54.00 | l | 60.00 | k | 66.84 | l | 77.24 | i | 85.76 | f | 98.77 | q | 92.87 | p | 92.43 | j | 89.35 | d | 76.21 | g | 66.23 | h | 58.41 | i | 89.35 | k |
2022 | 55.24 | n | ----- | z | ----- | z | ----- | z | 90.56 | f | 92.71 | f | 93.33 | v | 92.65 | n | 87.31 | n | 73.44 | m | 62.50 | j | 58.62 | r | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.58 | 58.58 | 67.08 | 75.48 | 84.48 | 93.16 | 95.04 | 92.35 | 85.84 | 75.58 | 62.55 | 52.63 | 74.79 | |||||||||||||
S.D. | 4.73 | 4.83 | 4.40 | 4.02 | 3.95 | 3.68 | 3.24 | 3.38 | 3.54 | 3.43 | 3.38 | 3.72 | 2.62 | |||||||||||||
SKEW | 0.22 | -0.11 | -0.34 | -0.17 | 0.41 | 0.06 | 0.02 | 0.02 | 0.32 | -0.18 | 0.12 | -0.03 | 0.23 | |||||||||||||
MAX | 62.50 | 67.96 | 75.39 | 83.63 | 94.94 | 101.93 | 101.35 | 99.26 | 95.87 | 82.13 | 71.80 | 59.67 | 79.31 | |||||||||||||
MIN | 44.46 | 46.00 | 57.55 | 65.40 | 77.52 | 85.48 | 88.29 | 85.74 | 78.23 | 67.23 | 54.90 | 43.45 | 70.49 | |||||||||||||
YRS | 44 | 44 | 44 | 43 | 48 | 45 | 46 | 44 | 50 | 48 | 48 | 45 | 34 |