YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | 77.95 | 77.58 | 71.36 | a | 62.00 | 51.85 | 44.02 | 64.13 | f | |||||
1963 | 35.75 | a | 45.55 | 52.50 | 63.97 | 69.89 | 74.77 | 79.47 | 76.73 | 70.77 | 64.97 | 51.97 | 39.18 | 60.46 | ||||||||||||
1964 | 40.81 | 37.57 | 49.97 | 60.08 | 70.87 | 75.80 | 80.47 | 77.74 | 68.79 | a | 60.68 | 49.12 | 41.03 | 59.41 | ||||||||||||
1965 | 43.19 | 38.68 | 41.05 | 60.80 | 68.23 | 74.67 | 78.77 | 75.13 | 69.42 | 59.82 | 54.42 | 44.13 | 59.03 | |||||||||||||
1966 | 33.68 | 38.02 | 50.35 | 56.68 | 66.11 | 73.85 | 80.84 | 73.71 | 68.79 | a | 56.97 | 52.41 | a | 38.35 | 57.48 | |||||||||||
1967 | 39.89 | 42.64 | 55.34 | 63.90 | 65.10 | 74.50 | 75.35 | 74.23 | a | 66.85 | d | 60.58 | 49.23 | ----- | z | 60.69 | a | |||||||||
1968 | ----- | z | ----- | z | ----- | z | 55.17 | 64.81 | 73.64 | b | ----- | z | 72.75 | s | 67.05 | 61.45 | 46.95 | 41.31 | 58.62 | e | ||||||
1969 | 44.00 | 42.45 | 39.18 | 58.90 | 66.55 | 72.55 | 79.81 | 78.18 | 69.47 | 55.56 | 47.87 | 43.23 | 58.14 | |||||||||||||
1970 | 36.22 | a | 44.80 | 43.72 | b | 56.00 | 66.69 | 72.80 | 77.55 | 76.52 | 68.92 | 55.06 | 47.62 | 44.82 | 57.56 | |||||||||||
1971 | 40.89 | 40.16 | 49.39 | 56.62 | ----- | z | 75.07 | a | 76.76 | 70.11 | d | 66.57 | 59.02 | 49.30 | 41.20 | a | 56.82 | a | ||||||||
1972 | 40.89 | 43.17 | 54.37 | 60.97 | 65.21 | 73.87 | 74.03 | 71.77 | 68.28 | 58.85 | a | 40.25 | 37.98 | 57.47 | ||||||||||||
1973 | 34.15 | 38.75 | 47.95 | 51.17 | a | 64.90 | 73.40 | e | 76.90 | j | 76.16 | 69.42 | 62.13 | a | 51.71 | d | 41.85 | 55.60 | a | |||||||
1974 | 39.34 | 43.04 | 56.10 | 60.62 | 71.73 | a | 75.14 | l | 77.43 | a | ----- | z | ----- | z | 58.74 | 47.22 | a | 38.37 | 54.73 | c | ||||||
1975 | 39.26 | 40.20 | a | 47.27 | 55.58 | 65.06 | 75.37 | 73.58 | 74.05 | 64.77 | 59.50 | 47.07 | a | 41.03 | 56.90 | |||||||||||
1976 | 38.02 | 48.45 | 48.71 | 59.45 | 62.98 | 73.90 | 73.13 | 75.02 | 67.45 | 52.11 | 41.50 | 38.39 | 56.59 | |||||||||||||
1977 | 32.37 | 43.38 | 47.73 | 56.70 | b | 68.90 | 76.50 | 78.13 | 77.68 | ----- | z | ----- | z | 49.09 | a | 43.23 | 57.37 | b | ||||||||
1978 | 33.55 | 34.89 | 48.87 | 61.28 | a | 66.61 | 75.55 | 79.18 | 75.44 | 68.90 | 59.56 | 48.08 | 36.92 | 57.40 | ||||||||||||
1979 | 31.34 | 39.82 | 48.05 | 56.72 | 63.55 | a | 72.32 | 78.29 | 73.47 | a | 68.17 | a | 61.11 | 42.02 | 39.29 | 56.18 | ||||||||||
1980 | 38.11 | 40.80 | a | 46.05 | 53.52 | b | 64.92 | a | 80.02 | a | 80.39 | 77.06 | 70.77 | 57.55 | 43.48 | ----- | z | 59.33 | a | |||||||
1981 | 40.26 | 44.07 | a | 48.29 | b | 60.48 | 65.53 | b | 76.55 | a | 77.62 | a | 72.90 | 68.32 | 58.85 | 51.19 | a | 43.23 | 58.94 | |||||||
1982 | 37.25 | a | 37.15 | d | 48.65 | e | 56.55 | b | 65.03 | b | 72.10 | 78.08 | 77.02 | b | 70.39 | b | 56.54 | c | 45.09 | b | 36.07 | b | 56.66 | |||
1983 | 33.71 | b | 40.17 | a | 47.71 | c | 50.43 | 62.17 | a | 70.38 | 78.41 | b | 77.26 | 72.45 | 60.16 | 49.78 | 30.10 | a | 56.06 | |||||||
1984 | 35.52 | a | 41.84 | 45.60 | b | 53.61 | b | 67.82 | 74.07 | a | 75.80 | a | 73.72 | a | 65.05 | b | 55.06 | 46.53 | 40.64 | c | 56.27 | |||||
1985 | 33.93 | a | 37.61 | a | 49.45 | b | 59.55 | a | 67.39 | 72.64 | a | 76.21 | 78.23 | 69.28 | 57.64 | b | 48.82 | 36.60 | 57.28 | |||||||
1986 | 42.15 | 43.80 | 51.52 | a | 60.38 | 66.02 | 72.47 | 78.11 | 74.92 | 69.67 | a | 57.08 | 45.42 | 38.16 | 58.31 | |||||||||||
1987 | 36.48 | 42.59 | 44.44 | 54.02 | 65.65 | 72.61 | c | 77.55 | 75.40 | 67.83 | 59.84 | 47.75 | 37.00 | 56.76 | ||||||||||||
1988 | 34.31 | 40.74 | 47.37 | 55.35 | 64.52 | 73.03 | 74.81 | 74.47 | 68.52 | 60.63 | 50.08 | 38.50 | 56.86 | |||||||||||||
1989 | 41.27 | 38.37 | a | 51.39 | 60.55 | 69.61 | 72.10 | 76.47 | 74.52 | 66.05 | 60.27 | 47.67 | 33.82 | a | 57.67 | |||||||||||
1990 | 39.16 | 43.32 | 47.53 | 57.78 | 64.32 | 81.47 | 74.84 | 73.89 | 70.60 | 58.69 | 50.16 | a | 37.08 | 58.24 | ||||||||||||
1991 | 35.45 | 44.73 | ----- | z | 60.15 | 71.10 | a | 76.60 | 76.06 | 76.68 | n | 65.52 | 59.69 | 44.02 | 41.02 | 57.43 | b | |||||||||
1992 | 38.39 | 46.48 | 52.62 | a | 59.48 | 64.71 | b | 73.09 | b | 77.92 | 74.31 | 70.02 | c | 62.50 | e | 44.00 | a | 39.82 | 58.61 | |||||||
1993 | 37.98 | a | 40.62 | 49.23 | 57.70 | 66.66 | 76.07 | 79.60 | 76.95 | 68.57 | 56.68 | 43.75 | 41.47 | 57.94 | ||||||||||||
1994 | 39.52 | a | 41.09 | 51.42 | 58.21 | a | 66.84 | 80.03 | 79.42 | 76.84 | 70.32 | 60.53 | a | 49.57 | 44.77 | 59.88 | ||||||||||
1995 | 40.29 | 46.68 | 49.19 | 56.95 | 66.13 | 75.05 | 79.19 | 77.45 | 68.71 | a | 59.55 | 51.10 | a | 42.15 | 59.37 | |||||||||||
1996 | 39.81 | 45.90 | 46.76 | 58.47 | 74.15 | a | 77.05 | 78.26 | 75.31 | b | 67.33 | 58.97 | a | 48.75 | 42.13 | 59.41 | ||||||||||
1997 | 36.69 | 39.34 | 52.39 | 53.11 | b | 65.65 | 73.97 | 78.02 | 75.87 | 72.52 | 58.85 | 45.43 | 36.23 | 57.34 | ||||||||||||
1998 | 43.42 | a | 43.25 | 42.39 | h | 55.80 | 72.02 | 79.35 | 82.44 | 76.27 | 75.00 | 62.87 | 52.00 | 42.42 | 62.26 | a | ||||||||||
1999 | 43.98 | a | 48.39 | 49.79 | 57.52 | 65.32 | 74.36 | a | 77.24 | b | 78.50 | 68.50 | a | 59.34 | 54.03 | 40.66 | 59.80 | |||||||||
2000 | 43.05 | 49.29 | 51.71 | 59.42 | 72.08 | 74.13 | 79.45 | 79.06 | 73.20 | 60.67 | a | 41.66 | a | 36.31 | 60.00 | |||||||||||
2001 | 36.40 | 44.73 | 46.68 | 61.53 | 69.06 | 78.42 | 83.05 | 78.56 | 70.38 | 59.82 | 51.70 | 41.55 | 60.16 | |||||||||||||
2002 | 41.61 | 40.77 | 46.19 | 61.62 | a | 68.76 | 78.55 | 78.79 | 79.90 | 71.12 | 58.24 | 46.03 | 40.89 | 59.37 | ||||||||||||
2003 | 42.13 | 41.71 | 51.32 | 60.98 | 69.15 | 73.18 | 79.98 | 79.45 | 69.28 | 63.89 | 50.29 | b | 42.46 | d | 60.32 | |||||||||||
2004 | 41.26 | 40.26 | 54.32 | a | 57.50 | b | 69.77 | a | 75.50 | 76.89 | 74.55 | 68.92 | 60.56 | 45.43 | 40.98 | 58.83 | ||||||||||
2005 | 43.56 | 44.91 | 48.43 | a | 58.03 | 66.98 | a | 77.08 | 78.08 | 75.94 | 73.97 | a | 60.77 | 51.67 | g | 41.12 | a | 60.81 | a | |||||||
2006 | 45.56 | 44.00 | 51.92 | 63.28 | 72.11 | 78.68 | 81.10 | a | 77.60 | a | 66.97 | 59.94 | 51.21 | a | 40.44 | f | 62.94 | a | ||||||||
2007 | 34.13 | 43.09 | 53.52 | 54.78 | a | 65.58 | 73.25 | 76.66 | 78.82 | 72.72 | 63.18 | 49.97 | 41.89 | 58.96 | ||||||||||||
2008 | 39.03 | 45.47 | 50.84 | 57.90 | 67.45 | 79.48 | 77.03 | 76.34 | 67.62 | 59.74 | 50.33 | 41.61 | 59.40 | |||||||||||||
2009 | 41.77 | 48.21 | 52.82 | 58.20 | 68.71 | 78.47 | 79.06 | 78.71 | 68.82 | 57.50 | 51.80 | 36.03 | 60.01 | |||||||||||||
2010 | 38.00 | 37.96 | 48.77 | 59.03 | 66.60 | 80.55 | 76.85 | 78.76 | 74.57 | 61.56 | 48.37 | 44.19 | 59.60 | |||||||||||||
2011 | 38.81 | 39.59 | 55.16 | 62.90 | 68.16 | 82.57 | 84.32 | 84.82 | 70.82 | 60.52 | 48.13 | 34.89 | 60.89 | |||||||||||||
2012 | 42.13 | 41.59 | 55.13 | 64.30 | 69.39 | 78.98 | 79.37 | 78.23 | 69.92 | 58.45 | 52.17 | 40.98 | 60.89 | |||||||||||||
2013 | 38.42 | 41.39 | 49.47 | 55.82 | 67.76 | 78.38 | 77.03 | 77.65 | 72.17 | 58.98 | 45.48 | 38.08 | 58.39 | |||||||||||||
2014 | 37.40 | 41.59 | 46.85 | 57.55 | 65.76 | 76.52 | 77.00 | 76.97 | 68.35 | 61.92 | 43.88 | 42.39 | 58.01 | |||||||||||||
2015 | 36.42 | 42.61 | 48.82 | 58.62 | 63.73 | 75.70 | 78.65 | 77.27 | 74.20 | 61.29 | 48.87 | 42.03 | 59.02 | |||||||||||||
2016 | 39.69 | 45.88 | 53.60 | 58.50 | 64.74 | 76.90 | 83.35 | 75.87 | 70.60 | 63.55 | 52.32 | 40.45 | 60.45 | |||||||||||||
2017 | 41.29 | 49.57 | 55.87 | 59.98 | 66.63 | 78.18 | 78.94 | 73.92 | 70.12 | 59.32 | 53.25 | 41.76 | 60.74 | |||||||||||||
2018 | 37.95 | 43.21 | 53.18 | 56.77 | 73.56 | 80.40 | 79.66 | 76.94 | 69.37 | 58.26 | 44.20 | 39.95 | 59.45 | |||||||||||||
2019 | 40.42 | 43.36 | 47.55 | 58.38 | 64.85 | 73.95 | 79.06 | 81.35 | 75.05 | 55.42 | 45.33 | 43.74 | 59.04 | |||||||||||||
2020 | 42.60 | 40.03 | 53.26 | 58.08 | 70.66 | 77.95 | 83.18 | 80.90 | 68.40 | 58.24 | 52.85 | 40.69 | 60.57 | |||||||||||||
2021 | 38.48 | 37.00 | 50.45 | 55.90 | 67.15 | 77.28 | 76.94 | 77.50 | 73.25 | 62.45 | 51.27 | 48.76 | 59.70 | |||||||||||||
2022 | 37.29 | 36.89 | 48.56 | 60.47 | 71.23 | 79.08 | 84.15 | 78.53 | 73.13 | 59.42 | 45.12 | 40.47 | 59.53 | |||||||||||||
2023 | 42.00 | 42.14 | 50.40 | 56.32 | 68.26 | 75.87 | 82.11 | 82.50 | 74.90 | 60.87 | 50.28 | 43.56 | 60.77 | |||||||||||||
2024 | 36.69 | 46.98 | 49.93 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.53 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.81 | 42.31 | 49.74 | 58.20 | 67.35 | 75.84 | 78.46 | 76.69 | 69.80 | 59.57 | 48.30 | 40.36 | 58.72 | |||||||||||||
S.D. | 3.26 | 3.36 | 3.44 | 2.96 | 2.72 | 2.76 | 2.44 | 2.54 | 2.51 | 2.34 | 3.39 | 3.13 | 1.39 | |||||||||||||
SKEW | -0.20 | 0.17 | -0.44 | -0.20 | 0.56 | 0.38 | 0.35 | 0.38 | 0.37 | -0.45 | -0.37 | -0.52 | -0.25 | |||||||||||||
MAX | 45.56 | 49.57 | 56.10 | 64.30 | 74.15 | 82.57 | 84.32 | 84.82 | 75.05 | 64.97 | 54.42 | 48.76 | 60.89 | |||||||||||||
MIN | 31.34 | 34.89 | 39.18 | 50.43 | 62.17 | 70.38 | 73.13 | 70.11 | 64.77 | 52.11 | 40.25 | 30.10 | 56.06 | |||||||||||||
YRS | 61 | 61 | 59 | 61 | 60 | 60 | 60 | 59 | 60 | 61 | 61 | 59 | 50 |