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 | 57.44 | c | 60.98 | e | 70.46 | c | 74.61 | 73.11 | 66.95 | 55.19 | 45.24 | a | 36.37 | a | 60.04 | c | ||||
1963 | 30.16 | b | 39.59 | 45.19 | 54.71 | m | 63.45 | 66.03 | 75.97 | 74.26 | 69.70 | b | 57.04 | c | 43.57 | b | 30.50 | h | 56.50 | b | ||||||
1964 | 28.73 | c | 28.81 | 40.48 | 51.53 | 62.97 | 68.87 | 76.47 | 73.45 | 67.22 | 54.63 | 40.92 | 33.18 | 52.27 | ||||||||||||
1965 | 33.79 | 35.46 | b | 43.89 | 51.85 | 59.76 | 67.02 | 75.23 | 71.65 | 64.81 | a | 52.52 | a | 44.95 | b | 36.21 | 53.09 | |||||||||
1966 | 30.24 | b | 33.56 | a | 44.58 | 55.00 | 62.85 | 69.08 | 76.27 | 73.57 | a | 65.38 | 54.35 | 44.55 | 32.00 | 53.45 | ||||||||||
1967 | 30.05 | c | 39.16 | 49.45 | 55.20 | 60.87 | 69.22 | 77.10 | 72.08 | 63.82 | 55.24 | 44.00 | 33.43 | a | 54.14 | |||||||||||
1968 | 34.40 | 42.45 | 45.66 | 51.55 | 61.63 | 69.15 | 73.42 | 70.56 | 62.70 | 54.85 | 42.55 | 30.92 | 53.32 | |||||||||||||
1969 | 38.77 | 38.16 | 38.81 | 55.45 | 62.18 | 69.15 | 75.69 | 74.55 | 66.07 | 53.97 | 41.65 | 37.94 | 54.37 | |||||||||||||
1970 | 31.34 | b | 40.02 | 42.97 | 50.40 | 61.77 | 67.95 | 75.11 | 73.15 | a | 63.80 | 50.32 | 42.63 | 34.00 | a | 52.79 | ||||||||||
1971 | 30.89 | 38.13 | b | 46.45 | 51.58 | 59.13 | 69.43 | 76.40 | 71.52 | 63.55 | a | 54.83 | a | 43.05 | 32.45 | 53.12 | ||||||||||
1972 | 35.32 | 40.85 | c | 50.98 | 54.95 | 60.24 | 69.15 | 75.06 | 71.71 | 65.83 | 58.32 | c | 40.25 | 35.19 | b | 54.82 | ||||||||||
1973 | 31.29 | b | 36.95 | 44.74 | d | 48.45 | 59.92 | 67.55 | a | 73.55 | 71.84 | 63.98 | 53.00 | 44.17 | 34.83 | b | 52.52 | |||||||||
1974 | 35.15 | g | 34.43 | 51.92 | 52.55 | 63.82 | 71.43 | 73.58 | 70.42 | 63.48 | a | 56.50 | 42.78 | 31.90 | f | 58.09 | b | |||||||||
1975 | 33.73 | c | 38.18 | 46.33 | g | 48.18 | 57.15 | 66.95 | 72.10 | 70.50 | 62.20 | 51.59 | b | 40.42 | d | ----- | z | 54.10 | b | |||||||
1976 | ----- | z | 43.00 | t | 44.32 | 51.07 | 60.92 | 68.43 | b | 74.08 | 74.03 | 65.25 | 51.05 | 39.36 | b | 29.00 | a | 55.75 | b | |||||||
1977 | 31.43 | c | 38.95 | 40.69 | 54.00 | 60.85 | 70.30 | 74.84 | 74.93 | a | 66.68 | 55.37 | 44.15 | c | 38.45 | 54.22 | ||||||||||
1978 | 35.84 | 38.77 | 47.26 | 54.65 | 59.79 | b | 70.38 | 75.06 | 71.02 | 65.26 | c | 56.10 | 44.92 | 33.81 | 54.40 | |||||||||||
1979 | 31.58 | 35.11 | 43.10 | 50.79 | a | 59.71 | 65.74 | a | 71.92 | 69.37 | 67.35 | 56.76 | 38.72 | 34.35 | 52.04 | |||||||||||
1980 | 37.89 | 40.60 | 43.27 | 50.17 | 58.23 | 70.30 | 76.97 | 72.66 | c | 66.96 | b | 51.77 | ----- | z | ----- | z | 56.88 | b | ||||||||
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | 50.50 | y | ----- | z | 60.95 | u | 65.00 | y | 78.28 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.50 | w | 36.04 | g | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | 51.62 | a | 63.24 | 72.90 | 79.03 | 78.69 | 73.30 | 58.93 | a | 47.77 | 48.05 | b | 63.73 | c | ||||||
1984 | 45.89 | d | 45.21 | 49.95 | a | 54.82 | 71.47 | 74.90 | 79.31 | 76.03 | 70.47 | 53.75 | a | 44.82 | 35.53 | 58.51 | ||||||||||
1985 | 35.66 | 39.46 | 50.00 | 58.85 | 65.84 | 75.97 | 79.40 | 77.40 | 67.05 | 57.58 | 52.12 | f | 42.43 | c | 59.06 | a | ||||||||||
1986 | 47.37 | 51.41 | a | 54.69 | 58.03 | 60.50 | b | 65.38 | 80.10 | a | 82.15 | a | 71.33 | 60.92 | 52.13 | c | 42.64 | c | 60.56 | |||||||
1987 | 31.82 | 40.61 | 45.08 | 55.92 | 64.95 | 73.42 | 78.08 | 75.26 | 68.17 | 60.08 | 43.55 | 35.61 | 56.05 | |||||||||||||
1988 | 33.21 | 42.97 | 47.65 | 57.30 | 66.05 | 75.18 | 79.26 | 75.40 | 65.75 | 60.52 | 46.53 | 34.52 | 57.03 | |||||||||||||
1989 | 34.45 | 42.93 | 53.18 | 62.28 | 69.98 | 75.82 | 79.45 | 75.98 | 68.70 | 56.66 | 44.90 | 34.15 | 58.21 | |||||||||||||
1990 | 34.10 | 39.79 | 50.81 | 59.73 | 66.16 | 78.95 | 78.34 | 74.61 | 71.15 | 58.11 | 45.60 | 34.48 | 57.65 | |||||||||||||
1991 | 35.11 | 43.86 | 48.22 | b | 56.60 | 65.69 | 73.38 | 78.15 | 76.50 | 69.02 | 59.16 | 45.50 | 37.52 | 57.39 | ||||||||||||
1992 | 33.29 | 42.48 | 50.23 | 60.97 | 65.73 | 72.40 | 77.11 | 75.81 | b | 69.63 | 60.34 | 40.38 | 33.15 | 56.79 | ||||||||||||
1993 | 41.21 | 43.81 | a | 49.95 | 58.47 | a | 67.06 | 74.82 | 80.65 | 77.32 | a | 67.67 | 56.55 | 42.98 | a | 35.36 | b | 57.99 | ||||||||
1994 | 36.83 | a | 41.27 | 51.15 | a | 57.60 | 66.48 | 79.22 | 81.74 | 79.60 | 69.65 | 56.85 | a | 46.07 | 39.20 | a | 58.80 | |||||||||
1995 | 38.19 | 47.74 | a | 52.47 | 55.65 | 66.06 | 73.17 | 77.58 | 80.65 | 71.57 | a | 57.68 | 48.59 | a | 40.00 | a | 59.11 | |||||||||
1996 | 39.23 | a | 48.14 | 49.10 | b | 59.76 | a | 71.52 | 78.53 | 80.72 | a | 77.38 | a | 68.10 | a | 58.68 | 46.78 | 39.19 | b | 59.76 | ||||||
1997 | 37.65 | 42.35 | a | 52.62 | a | 58.03 | a | 68.69 | 75.02 | 78.74 | 78.27 | a | 73.58 | 58.69 | 45.29 | a | 33.48 | b | 58.53 | |||||||
1998 | 38.02 | 42.32 | 49.47 | 54.47 | 66.02 | 75.40 | 80.13 | a | 79.38 | a | 75.57 | 60.63 | 47.75 | 39.87 | 59.09 | |||||||||||
1999 | 41.33 | a | 44.23 | b | 53.29 | 56.58 | 66.98 | 75.40 | 79.69 | 76.55 | a | 70.43 | a | 58.85 | 48.00 | 35.98 | a | 58.94 | ||||||||
2000 | 41.35 | 48.07 | a | 51.30 | a | 62.15 | 71.52 | 77.20 | b | 80.39 | 79.18 | 72.73 | 58.11 | c | 40.52 | 39.08 | a | 60.13 | ||||||||
2001 | 34.98 | a | 44.54 | a | 50.40 | a | 59.38 | a | 70.40 | b | 78.28 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.33 | f |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.32 | m | 56.02 | c | 43.97 | a | 35.77 | c | 45.25 | i |
2003 | 41.07 | c | 42.71 | b | 47.10 | f | 57.38 | d | 67.59 | b | 74.19 | c | 82.96 | c | 77.72 | d | 69.79 | a | 61.26 | 46.04 | c | 35.86 | c | 59.69 | a | |
2004 | 36.68 | i | 37.50 | 53.12 | b | 55.00 | b | 66.37 | d | 73.23 | b | 76.80 | i | 73.17 | j | 66.66 | e | 56.18 | a | 43.88 | b | 34.23 | k | 56.49 | d | |
2005 | 41.93 | d | 42.50 | d | 46.56 | f | 55.09 | s | 65.23 | i | 74.22 | j | 78.50 | q | 75.93 | h | 70.37 | c | 57.97 | b | 45.47 | 37.52 | 49.29 | f | ||
2006 | 38.23 | a | 41.38 | 50.23 | e | 59.79 | i | 68.60 | e | 76.48 | d | 78.24 | b | 74.54 | c | 65.06 | d | 56.12 | e | 46.27 | d | 32.86 | c | 57.09 | a | |
2007 | 32.50 | e | 42.58 | d | 49.74 | d | 55.96 | d | 64.47 | b | 75.71 | i | 78.15 | a | 79.37 | l | 70.74 | g | 57.38 | g | 46.80 | e | 35.61 | d | 50.73 | d |
2008 | 33.10 | ----- | z | 48.06 | e | 56.08 | l | 63.84 | f | 76.11 | c | 76.93 | d | 76.59 | d | 67.67 | f | 57.65 | h | 46.18 | e | 39.10 | f | 59.49 | f | |
2009 | 37.97 | b | 43.36 | g | 51.32 | i | 55.89 | g | 68.13 | d | ----- | z | 79.13 | h | ----- | z | ----- | z | ----- | z | 44.20 | e | ----- | z | 50.10 | i |
2010 | 34.16 | c | 39.48 | d | 45.64 | i | 55.10 | i | 65.12 | o | 75.61 | h | 79.35 | h | 76.14 | j | ----- | z | ----- | z | ----- | z | ----- | z | 36.82 | j |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.42 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | 70.19 | j | 78.18 | m | 76.91 | b | 75.27 | g | 68.17 | c | 53.42 | g | 41.64 | e | 33.66 | i | 62.24 | i |
2014 | 32.86 | i | 43.75 | r | 53.50 | x | 52.78 | u | 64.26 | j | 76.47 | k | 77.96 | e | 74.48 | j | 70.92 | 59.50 | f | 41.87 | g | 37.83 | j | 74.44 | j | |
2015 | 35.05 | j | 44.25 | l | 49.60 | p | 57.86 | w | 61.46 | s | 75.50 | s | ----- | z | ----- | z | 72.17 | d | 60.33 | v | ----- | z | ----- | z | 72.17 | k |
2016 | ----- | z | ----- | z | ----- | z | 58.56 | v | 63.17 | h | 76.63 | g | 80.73 | i | 72.64 | j | 69.48 | e | 62.69 | r | ----- | z | ----- | z | 69.48 | k |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.69 | n | 77.56 | w | 75.97 | n | 70.34 | h | 57.96 | e | 43.00 | l | ----- | z | 57.96 | k |
2019 | 39.39 | v | ----- | z | 52.54 | c | 57.35 | m | 62.27 | e | 72.54 | c | 79.48 | c | 77.82 | 71.54 | c | 54.89 | 43.42 | f | 37.36 | c | 63.55 | d | ||
2020 | 35.78 | h | 41.02 | i | 52.52 | g | 58.66 | e | 67.83 | b | 74.52 | e | 80.23 | g | 78.67 | e | 67.20 | c | 56.14 | b | 47.25 | j | 33.61 | m | 67.17 | f |
2021 | 34.42 | l | 39.76 | k | 45.50 | l | 56.62 | i | 66.46 | f | 78.77 | q | 77.97 | p | 75.83 | j | 72.33 | d | 56.79 | g | 45.68 | h | 38.75 | i | 72.33 | k |
2022 | 34.24 | n | ----- | z | ----- | z | ----- | z | 67.48 | f | 75.90 | f | 77.89 | v | 79.03 | n | 71.94 | n | 57.97 | m | 42.27 | j | 40.08 | r | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.71 | 40.89 | 48.18 | 55.37 | 64.35 | 72.25 | 77.32 | 75.14 | 68.09 | 56.49 | 44.31 | 36.09 | 56.18 | |||||||||||||
S.D. | 4.34 | 4.25 | 3.98 | 3.60 | 3.83 | 3.85 | 2.58 | 3.12 | 3.19 | 2.72 | 2.69 | 3.53 | 2.74 | |||||||||||||
SKEW | 0.69 | -0.16 | -0.52 | -0.10 | 0.16 | 0.01 | -0.14 | 0.11 | 0.16 | -0.31 | 0.16 | 1.04 | -0.04 | |||||||||||||
MAX | 47.37 | 51.41 | 54.69 | 62.28 | 71.52 | 79.22 | 82.96 | 82.15 | 75.57 | 61.26 | 52.13 | 48.05 | 60.56 | |||||||||||||
MIN | 28.73 | 28.81 | 38.81 | 48.18 | 57.15 | 65.38 | 71.92 | 69.37 | 62.20 | 50.32 | 38.72 | 29.00 | 52.04 | |||||||||||||
YRS | 41 | 41 | 40 | 41 | 45 | 44 | 44 | 42 | 48 | 45 | 44 | 39 | 29 |