YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 78.65 | 78.44 | 71.18 | 61.53 | 48.43 | 40.98 | 63.20 | f | ||||||
1963 | 27.21 | 43.54 | 51.02 | 61.78 | 70.08 | a | 75.02 | 81.60 | 80.31 | 74.17 | 66.53 | 49.94 | e | 32.47 | 59.47 | |||||||||||
1964 | 38.23 | 32.76 | 44.44 | 58.53 | 69.74 | 75.65 | 83.63 | 81.11 | 70.70 | 59.89 | 45.92 | 36.65 | 58.10 | |||||||||||||
1965 | 40.79 | 38.41 | 38.29 | e | 60.85 | 65.98 | 71.05 | 78.52 | 77.35 | 68.68 | 59.54 | e | 51.46 | d | 41.42 | 57.70 | ||||||||||
1966 | 29.55 | 35.46 | 50.05 | 55.77 | 67.58 | 75.95 | 84.24 | 75.76 | 69.07 | 57.82 | 49.38 | 35.62 | b | 57.19 | ||||||||||||
1967 | 40.08 | 40.96 | 54.61 | 61.62 | 64.90 | 74.43 | 78.53 | 75.48 | 69.67 | 61.94 | 45.42 | 35.16 | 58.57 | |||||||||||||
1968 | 37.65 | 38.33 | 49.60 | 56.57 | 63.16 | 76.62 | 79.15 | 77.71 | 69.72 | 61.90 | 45.31 | d | 34.40 | a | 57.51 | |||||||||||
1969 | 40.63 | 40.54 | 38.56 | 60.48 | 68.32 | 74.30 | 82.94 | 81.15 | 70.87 | 54.75 | a | 45.58 | 38.60 | 58.06 | ||||||||||||
1970 | 33.71 | 44.45 | 42.19 | 55.03 | 70.16 | 74.28 | 80.81 | 80.45 | 71.67 | 54.45 | 46.22 | 41.16 | 57.88 | |||||||||||||
1971 | 35.32 | 39.41 | a | 48.37 | 57.40 | 66.05 | 77.72 | 80.23 | 75.92 | 69.65 | 60.15 | 46.72 | 38.58 | 57.96 | ||||||||||||
1972 | 36.52 | 43.22 | 54.66 | 61.53 | 67.18 | 76.60 | 78.31 | 77.81 | 71.45 | 59.24 | 37.57 | 32.06 | 58.01 | |||||||||||||
1973 | 31.76 | 40.70 | 47.87 | 51.88 | 63.63 | 76.15 | 79.39 | 78.77 | 68.28 | 61.10 | 47.93 | 37.21 | 57.06 | |||||||||||||
1974 | 32.44 | 43.55 | 53.24 | 60.12 | 72.55 | 76.55 | 82.79 | 75.55 | 65.27 | 60.65 | 45.53 | 36.03 | 58.69 | |||||||||||||
1975 | 36.73 | 36.14 | 47.00 | 56.80 | 66.21 | 74.73 | 77.71 | 78.27 | 68.10 | 61.15 | 44.58 | 40.95 | 57.36 | |||||||||||||
1976 | 36.76 | 47.24 | 49.34 | 59.88 | 63.06 | 76.10 | 79.23 | 78.47 | 70.45 | 54.11 | 42.05 | 38.16 | 57.90 | |||||||||||||
1977 | 28.71 | 43.73 | 49.23 | a | 59.75 | 68.92 | 78.93 | 83.03 | 79.21 | 73.98 | 61.89 | 47.55 | 40.13 | a | 59.59 | |||||||||||
1978 | 28.82 | 28.45 | 49.05 | 61.95 | 63.79 | 77.18 | 83.74 | 79.03 | 72.65 | 60.39 | 46.37 | 34.08 | 57.12 | |||||||||||||
1979 | 24.11 | 39.12 | 48.44 | 57.27 | 63.58 | 73.50 | 79.27 | 75.47 | 71.55 | 62.33 | a | 41.77 | 39.39 | 56.32 | ||||||||||||
1980 | 34.90 | 38.43 | 45.55 | 54.27 | 63.26 | 77.83 | 84.11 | 79.23 | 70.83 | 56.73 | 42.88 | 39.58 | 57.30 | |||||||||||||
1981 | 36.76 | 41.62 | 46.87 | 61.91 | c | 64.24 | 79.53 | 80.57 | a | 76.05 | 69.95 | 57.68 | 48.18 | 38.35 | 58.48 | |||||||||||
1982 | 36.44 | 32.98 | b | 46.85 | 55.98 | a | 63.95 | i | 71.65 | 78.70 | a | 78.95 | c | 71.91 | b | 58.68 | 44.52 | a | 36.82 | 55.77 | a | |||||
1983 | 35.85 | 36.77 | b | 45.26 | 51.88 | 61.25 | c | 71.87 | 80.53 | 82.08 | a | 73.67 | a | 60.71 | 47.77 | 24.87 | a | 56.04 | ||||||||
1984 | 32.41 | b | 42.67 | 44.81 | 52.02 | a | 67.17 | a | 76.57 | c | 79.50 | 78.30 | a | 68.91 | a | 56.65 | 46.17 | a | 38.77 | 57.00 | ||||||
1985 | 32.69 | 38.02 | 50.34 | 59.40 | 67.48 | a | 75.20 | b | 80.61 | 79.65 | 69.90 | a | 57.92 | 42.72 | 34.48 | 57.37 | ||||||||||
1986 | 43.42 | 41.14 | 54.03 | 61.17 | a | 66.73 | 75.22 | 81.53 | 76.58 | a | 71.30 | 56.69 | 43.62 | 37.02 | 59.04 | |||||||||||
1987 | 35.69 | 42.54 | 45.73 | 56.17 | 66.45 | 73.15 | 77.90 | a | 77.62 | a | 68.65 | 58.60 | 45.72 | 35.26 | 56.96 | |||||||||||
1988 | 30.69 | 38.50 | 45.40 | 55.97 | a | 64.66 | 75.45 | 76.87 | 78.98 | 68.56 | c | 57.74 | 47.72 | 39.31 | 56.65 | |||||||||||
1989 | 39.94 | 30.98 | 51.24 | 61.38 | a | 66.76 | d | 70.86 | e | ----- | z | ----- | z | 66.02 | 58.39 | 46.27 | 28.87 | 52.07 | b | |||||||
1990 | 35.45 | 37.16 | 44.37 | 54.77 | 62.22 | b | 79.26 | a | 77.22 | a | 76.42 | 71.02 | a | 56.05 | a | 48.57 | a | 30.34 | 56.07 | |||||||
1991 | 29.27 | 43.82 | 47.75 | a | 56.88 | a | 66.50 | 73.75 | b | 76.98 | b | 76.23 | c | 67.10 | a | 58.66 | b | 39.15 | 36.44 | 56.04 | ||||||
1992 | 37.71 | b | 42.62 | a | 48.83 | b | 56.45 | a | 63.34 | c | 69.50 | a | 75.95 | b | 71.61 | c | 68.84 | a | 58.35 | a | 38.15 | 32.45 | 55.32 | |||
1993 | 28.48 | a | 34.02 | 44.93 | a | 52.40 | 64.29 | c | 72.63 | 78.16 | b | 76.37 | a | 65.55 | 52.95 | b | 39.90 | 37.06 | 53.89 | |||||||
1994 | 33.45 | a | 33.80 | a | 45.55 | 54.02 | 64.28 | a | 78.34 | a | 77.42 | 75.92 | a | 67.98 | a | 57.56 | 43.67 | a | 39.98 | 56.00 | ||||||
1995 | 35.55 | 41.64 | 44.40 | 50.33 | 58.36 | c | 70.05 | 76.48 | a | 78.74 | 67.23 | 55.70 | a | 45.73 | 34.86 | b | 54.92 | |||||||||
1996 | 32.23 | 38.21 | 40.42 | 55.09 | a | 68.33 | a | 74.72 | a | 76.18 | 73.50 | a | 64.73 | 55.47 | a | 43.14 | b | 33.87 | 54.66 | |||||||
1997 | 30.53 | a | 36.16 | 47.26 | b | 47.30 | b | 61.73 | a | 70.75 | 79.03 | 75.45 | b | 71.50 | j | 55.55 | a | 41.07 | 32.11 | 52.45 | a | |||||
1998 | 36.18 | a | 39.10 | d | 40.10 | a | 51.12 | 68.37 | a | 76.16 | a | 80.60 | b | 76.42 | a | 75.59 | c | 59.77 | a | 46.93 | a | 35.60 | 57.16 | |||
1999 | 36.50 | 44.50 | a | 42.52 | b | 53.28 | 61.98 | b | 72.28 | 78.93 | b | 79.00 | c | 66.91 | a | 57.43 | a | 51.20 | c | 37.37 | 56.83 | |||||
2000 | 37.39 | 44.83 | b | 46.35 | 55.19 | a | 66.72 | a | 71.46 | c | 79.68 | c | 81.42 | 72.97 | a | 58.06 | 38.64 | a | 30.40 | 56.93 | ||||||
2001 | 32.69 | 35.02 | 42.52 | a | 57.60 | a | 63.89 | 74.87 | d | 83.21 | 78.68 | a | 69.80 | b | 57.31 | 49.78 | 38.76 | 57.01 | ||||||||
2002 | 35.08 | 36.30 | 42.18 | a | 58.16 | b | 64.21 | b | 76.93 | b | 79.10 | a | 78.32 | 69.98 | 52.20 | a | 43.43 | b | 33.78 | a | 55.81 | |||||
2003 | 37.48 | 34.21 | 45.93 | b | 56.67 | 65.39 | d | 70.43 | b | ----- | z | 79.94 | 66.57 | b | 60.80 | f | 48.86 | e | 36.83 | g | 56.16 | c | ||||
2004 | 34.17 | b | 35.23 | c | 50.78 | d | 53.67 | a | 69.39 | d | 73.46 | c | 75.33 | d | 72.83 | b | 69.50 | a | 57.89 | h | 42.72 | g | 36.34 | l | 59.37 | c |
2005 | 36.31 | b | 40.22 | c | 43.36 | b | 54.00 | n | 64.42 | e | 73.37 | d | 77.82 | f | 76.48 | e | 73.20 | b | 58.02 | b | 49.02 | 35.74 | 55.01 | b | ||
2006 | 40.73 | 37.86 | 47.11 | 60.10 | 68.05 | 77.60 | a | 80.89 | 77.34 | 65.48 | 56.95 | 47.28 | 35.38 | a | 57.90 | |||||||||||
2007 | 28.52 | 33.57 | a | 51.08 | 50.47 | 64.24 | 70.82 | 77.08 | 80.23 | 71.00 | 60.77 | 44.72 | 33.05 | 55.46 | ||||||||||||
2008 | 34.89 | 36.72 | 45.87 | 53.37 | 65.90 | 76.28 | 77.63 | 75.45 | 66.60 | 56.74 | 47.93 | 34.79 | 56.02 | |||||||||||||
2009 | 35.65 | 43.12 | 46.79 | 53.85 | 63.16 | 74.95 | 78.63 | 77.15 | a | 66.73 | 50.94 | 50.53 | a | 30.56 | 56.01 | |||||||||||
2010 | 32.97 | 29.61 | 45.13 | 56.93 | 62.98 | 77.30 | 78.69 | 79.00 | 73.63 | 59.81 | 44.88 | 37.00 | 56.49 | |||||||||||||
2011 | 33.18 | 34.00 | 47.21 | 57.23 | 63.65 | 79.28 | 84.55 | 83.00 | 69.52 | 58.29 | 45.15 | 31.84 | 57.24 | |||||||||||||
2012 | 39.39 | 37.36 | 54.61 | 60.62 | 68.76 | 78.17 | 82.18 | 77.37 | 69.83 | 54.74 | 49.08 | 37.10 | 59.10 | |||||||||||||
2013 | 34.31 | 35.32 | 45.15 | 49.25 | 65.48 | 77.38 | 77.53 | 77.60 | 72.65 | 56.63 | 42.65 | 32.52 | 55.54 | |||||||||||||
2014 | 33.23 | 31.93 | 43.35 | 54.65 | 63.97 | a | 72.70 | 76.95 | 78.02 | 68.62 | 60.05 | 41.80 | 36.60 | 55.15 | ||||||||||||
2015 | 32.66 | 36.20 | 46.79 | 55.20 | 60.90 | 75.68 | 79.23 | 76.05 | 73.87 | 60.94 | 45.80 | 37.34 | 56.72 | |||||||||||||
2016 | 34.98 | 42.78 | 49.27 | 55.65 | 61.32 | 76.93 | 81.06 | 76.00 | 71.43 | 63.80 | a | 50.73 | 33.16 | 58.09 | ||||||||||||
2017 | 35.21 | 45.29 | 51.02 | 56.33 | 62.06 | 76.13 | 80.84 | 73.58 | 69.85 | 58.15 | 49.30 | 36.48 | 57.85 | |||||||||||||
2018 | 34.95 | 37.11 | 49.16 | 51.03 | 72.65 | 77.70 | 79.42 | 77.50 | 70.98 | 55.12 | a | 40.85 | 36.69 | 56.93 | ||||||||||||
2019 | 36.87 | 36.29 | 42.60 | 55.83 | a | 60.45 | 72.43 | 80.10 | 81.60 | 76.95 | 51.63 | 42.23 | 40.03 | 56.42 | ||||||||||||
2020 | 39.03 | 36.20 | a | 50.85 | 54.72 | 66.97 | 78.58 | 81.98 | 78.76 | 67.52 | 55.45 | a | 49.35 | 36.73 | 58.01 | |||||||||||
2021 | 36.60 | 28.21 | 46.76 | 52.92 | 64.10 | 77.12 | 78.24 | 79.53 | 75.33 | 60.95 | 49.72 | 45.03 | 57.88 | |||||||||||||
2022 | 34.56 | 33.29 | 45.19 | 57.03 | 67.77 | 77.62 | 83.58 | 79.16 | 74.90 | 59.66 | 41.38 | 35.85 | 57.50 | |||||||||||||
2023 | 38.11 | 37.96 | 45.63 | a | 55.72 | 66.57 | a | 72.80 | 80.16 | 80.21 | 74.27 | 60.45 | 47.55 | 41.39 | 58.40 | |||||||||||
2024 | 32.40 | 45.09 | 47.82 | 57.12 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.77 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.75 | 38.30 | 46.95 | 56.19 | 65.42 | 75.07 | 79.75 | 77.85 | 70.21 | 58.22 | 45.60 | 36.11 | 57.10 | |||||||||||||
S.D. | 3.70 | 4.45 | 3.72 | 3.51 | 2.93 | 2.61 | 2.32 | 2.27 | 2.80 | 2.98 | 3.44 | 3.55 | 1.22 | |||||||||||||
SKEW | -0.37 | -0.17 | 0.01 | -0.17 | 0.23 | -0.33 | 0.36 | -0.25 | 0.18 | -0.12 | -0.43 | -0.40 | -0.27 | |||||||||||||
MAX | 43.42 | 47.24 | 54.66 | 61.95 | 72.65 | 79.53 | 84.55 | 83.00 | 76.95 | 66.53 | 51.46 | 45.03 | 59.59 | |||||||||||||
MIN | 24.11 | 28.21 | 38.29 | 47.30 | 58.36 | 69.50 | 75.33 | 71.61 | 64.73 | 50.94 | 37.57 | 24.87 | 53.89 | |||||||||||||
YRS | 62 | 62 | 62 | 60 | 60 | 61 | 59 | 61 | 61 | 60 | 61 | 60 | 55 |