YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1944 | 35.96 | d | 37.72 | 43.37 | a | 45.19 | i | 55.74 | 58.53 | 70.60 | a | 73.87 | 67.62 | a | 55.23 | 43.33 | 38.23 | 52.75 | a | |||||||
1945 | 36.48 | 39.00 | 39.87 | 44.63 | 54.29 | 57.97 | 73.48 | 73.32 | 66.30 | 57.48 | 41.53 | 36.71 | 51.76 | |||||||||||||
1946 | 36.58 | 35.00 | 43.13 | 55.10 | 53.42 | 64.23 | 73.45 | 73.32 | 69.30 | 49.84 | 38.90 | 38.61 | 52.57 | |||||||||||||
1947 | 34.52 | 40.04 | 42.42 | 47.52 | a | 57.10 | b | 60.77 | 73.35 | 70.90 | 67.90 | 54.45 | 41.23 | 36.10 | 52.19 | |||||||||||
1948 | 34.26 | 36.52 | 39.32 | 49.80 | 51.10 | 60.20 | 71.48 | 72.48 | 66.83 | 57.74 | 38.30 | 37.84 | 51.32 | |||||||||||||
1949 | 31.53 | a | 36.75 | 41.00 | 50.20 | 52.94 | 64.53 | 73.03 | 68.32 | 71.20 | 52.68 | 44.73 | 36.65 | 51.96 | ||||||||||||
1950 | 34.19 | 42.32 | 44.68 | 51.73 | 53.45 | 61.73 | 72.84 | 70.97 | 61.43 | 58.94 | 48.47 | 42.39 | 53.59 | |||||||||||||
1951 | 37.90 | 41.07 | 44.45 | 50.57 | 56.47 | a | 62.67 | 74.03 | 71.82 | i | 66.47 | 56.26 | 43.87 | 37.90 | 51.97 | a | ||||||||||
1952 | 37.84 | 38.45 | 40.74 | 50.04 | b | 60.23 | 62.20 | 71.84 | 72.94 | 68.50 | 55.90 | 41.40 | 35.58 | 52.97 | ||||||||||||
1953 | 41.00 | 36.75 | 44.03 | a | 48.07 | b | 52.84 | 63.87 | 74.23 | 71.16 | 64.71 | b | 56.94 | 48.40 | 37.00 | 53.25 | ||||||||||
1954 | 38.84 | 46.11 | 45.65 | 52.80 | 58.26 | 64.38 | a | 74.61 | 70.13 | 67.24 | a | 55.39 | 44.63 | 37.81 | 54.65 | |||||||||||
1955 | 37.29 | 35.93 | 44.00 | 47.43 | 54.13 | 63.10 | 69.42 | 71.52 | 64.80 | 58.23 | 44.13 | 38.35 | 52.36 | |||||||||||||
1956 | 40.16 | 35.59 | 44.94 | 48.87 | 58.19 | 68.70 | 71.84 | 68.68 | 69.00 | 53.77 | 44.80 | 39.10 | 53.64 | |||||||||||||
1957 | 42.55 | 48.46 | 46.06 | 48.80 | 53.61 | 67.70 | 75.57 | a | 73.48 | 67.83 | f | 57.97 | 43.03 | 40.48 | 54.34 | a | ||||||||||
1958 | 36.97 | 43.61 | 43.90 | 49.76 | a | 60.39 | 67.10 | 72.16 | 73.52 | 66.80 | 59.19 | 44.30 | 39.45 | 54.76 | ||||||||||||
1959 | 39.77 | 39.04 | 45.29 | 53.33 | 53.19 | 67.93 | 75.94 | 70.65 | 61.47 | 55.97 | 48.33 | 40.42 | 54.28 | |||||||||||||
1960 | 34.65 | 36.31 | 44.74 | 48.73 | 54.42 | 67.47 | 74.81 | 74.55 | 68.47 | 55.48 | 45.80 | 36.55 | 53.50 | |||||||||||||
1961 | 40.55 | 41.68 | 43.29 | 50.67 | 54.39 | 67.80 | 74.58 | 72.48 | 64.27 | 53.68 | 43.73 | 40.29 | 53.95 | |||||||||||||
1962 | 38.45 | 41.75 | 39.23 | 51.97 | 54.65 | 62.60 | 72.68 | 76.26 | 70.87 | 55.26 | 47.73 | 41.97 | 54.45 | |||||||||||||
1963 | 35.42 | 45.46 | 42.32 | 47.37 | 57.03 | 58.70 | 74.23 | 72.35 | 67.93 | 58.29 | 44.83 | 37.19 | 53.43 | |||||||||||||
1964 | 34.16 | 34.28 | 41.16 | 48.10 | 52.97 | 61.17 | 76.52 | 71.74 | 64.37 | 58.81 | 40.13 | 38.58 | 51.83 | |||||||||||||
1965 | 39.29 | 39.07 | 39.81 | 49.37 | 52.61 | 57.50 | 73.00 | 73.16 | 64.00 | 56.13 | 50.13 | 41.90 | 53.00 | |||||||||||||
1966 | 35.61 | 36.71 | 43.68 | 49.43 | 57.39 | 63.47 | 74.52 | 73.97 | 68.20 | 54.06 | 45.03 | 37.71 | 53.32 | |||||||||||||
1967 | 36.77 | 39.82 | 44.55 | 44.47 | 55.84 | 62.43 | 74.45 | 72.06 | 64.27 | 54.84 | 45.43 | 35.23 | 52.51 | |||||||||||||
1968 | 37.55 | 44.38 | 42.10 | 45.97 | 53.48 | 62.37 | 71.03 | 66.90 | 63.60 | 52.39 | 44.17 | 34.87 | 51.57 | |||||||||||||
1969 | 43.23 | 37.32 | 40.61 | 48.00 | 55.58 | 59.57 | 74.10 | 76.84 | 69.03 | 51.58 | 47.30 | 38.26 | 53.45 | |||||||||||||
1970 | 36.94 | 43.07 | 42.29 | 41.47 | 54.81 | 61.70 | 74.13 | 74.00 | 65.23 | 49.35 | 41.40 | 38.48 | 51.91 | |||||||||||||
1971 | 35.77 | 37.57 | 41.48 | 45.97 | 51.81 | 61.50 | 73.87 | 70.26 | 65.77 | 51.52 | 41.03 | 36.55 | 51.09 | |||||||||||||
1972 | 34.26 | 40.14 | 48.19 | 48.97 | 56.32 | 65.77 | 74.55 | 70.47 | a | 65.97 | 57.29 | 42.47 | 37.23 | 53.47 | ||||||||||||
1973 | 35.42 | 41.61 | 39.19 | 47.20 | 57.10 | 64.70 | 73.13 | 70.13 | 61.14 | b | 54.52 | 42.33 | 37.77 | 52.02 | ||||||||||||
1974 | 38.55 | 37.89 | 45.26 | 48.97 | 56.00 | 67.57 | 73.29 | 70.81 | 67.03 | a | 57.77 | 43.77 | 36.23 | 53.59 | ||||||||||||
1975 | 38.77 | 36.25 | 41.77 | a | 43.31 | a | 52.73 | a | 60.97 | a | 74.87 | 71.93 | a | 66.43 | 53.39 | 43.63 | 38.23 | 51.86 | ||||||||
1976 | 39.00 | 44.61 | a | 43.29 | 47.97 | 57.90 | 63.53 | 72.94 | 70.77 | 64.33 | 54.61 | 46.20 | 39.26 | 53.70 | ||||||||||||
1977 | 41.19 | 41.36 | 40.13 | 49.00 | 52.47 | a | 64.73 | 75.23 | 74.84 | 68.83 | 61.03 | 46.87 | 44.10 | 54.98 | ||||||||||||
1978 | 42.06 | 40.71 | 48.10 | 47.53 | 54.81 | 68.77 | 74.52 | 71.10 | 66.17 | 58.81 | 44.14 | a | 35.84 | 54.38 | ||||||||||||
1979 | 34.90 | 37.21 | 42.20 | a | 47.10 | 55.33 | a | 64.97 | 70.71 | 67.84 | 69.13 | 54.42 | 40.10 | 38.16 | 51.84 | |||||||||||
1980 | 41.87 | 44.90 | 42.83 | a | 48.57 | 51.90 | a | 64.57 | 76.90 | 72.74 | 65.67 | 56.45 | ----- | z | 40.61 | 55.18 | a | |||||||||
1981 | 41.90 | 42.33 | a | 43.58 | 51.50 | 56.13 | 68.93 | 76.71 | 74.84 | 67.60 | 53.90 | 45.10 | 39.97 | 55.21 | ||||||||||||
1982 | 37.77 | 43.68 | 45.84 | 50.47 | 53.77 | 58.83 | 71.90 | 73.93 | a | 66.90 | 51.03 | 47.87 | 39.00 | 53.42 | ||||||||||||
1983 | 38.84 | 41.18 | 43.40 | a | 44.03 | 54.65 | 59.77 | 72.27 | a | 70.30 | a | 70.77 | 56.90 | 41.93 | 41.81 | 52.99 | ||||||||||
1984 | 39.00 | 37.86 | 43.48 | 48.47 | 61.74 | 64.93 | 73.48 | 71.58 | 69.00 | 53.58 | 41.93 | 40.32 | 53.78 | |||||||||||||
1985 | 37.68 | 38.29 | 43.39 | 52.00 | 57.13 | 65.17 | 72.77 | 71.68 | 61.33 | 54.58 | 43.43 | 39.96 | c | 53.12 | ||||||||||||
1986 | 41.39 | 43.36 | 49.71 | 53.20 | 58.90 | 70.07 | 73.48 | 75.41 | b | 63.23 | 56.00 | 47.77 | 40.52 | 56.09 | ||||||||||||
1987 | 38.35 | 42.00 | 43.48 | 55.47 | 58.39 | 67.37 | 71.32 | 72.23 | 66.50 | 62.66 | b | 46.59 | a | 38.19 | 55.21 | |||||||||||
1988 | 40.55 | 44.59 | 46.19 | 51.47 | 58.13 | 67.37 | 75.37 | a | 74.30 | a | 64.47 | 61.87 | 46.70 | 38.26 | 55.77 | |||||||||||
1989 | 38.67 | a | 43.57 | 48.45 | 56.59 | a | 58.74 | 67.67 | 75.73 | a | 71.10 | a | 68.30 | 58.52 | 48.43 | 41.26 | 56.42 | |||||||||
1990 | 38.87 | 38.50 | 47.58 | 53.80 | 58.74 | 69.76 | a | 74.82 | c | 70.32 | 68.28 | a | 56.97 | 47.33 | 39.90 | 55.41 | ||||||||||
1991 | 40.65 | 44.82 | 42.23 | a | 48.10 | 54.93 | a | 61.21 | a | 71.97 | 74.50 | a | 67.71 | b | 60.13 | a | 46.67 | 41.37 | a | 54.52 | ||||||
1992 | 41.58 | 44.90 | 45.87 | 53.13 | 60.81 | 65.23 | 71.73 | a | 72.00 | 68.77 | 57.10 | 42.57 | 39.77 | 55.29 | ||||||||||||
1993 | 44.10 | a | 42.07 | a | 45.37 | a | 49.63 | 59.45 | 64.80 | 70.81 | 74.59 | b | 65.34 | a | 57.68 | 45.17 | 39.77 | 54.90 | ||||||||
1994 | 37.29 | 40.04 | 47.03 | 49.17 | 56.19 | 70.07 | a | 74.90 | a | 75.26 | 68.43 | 54.50 | a | 41.66 | a | 39.43 | a | 54.50 | ||||||||
1995 | 39.90 | 46.00 | a | 45.94 | 46.87 | 53.87 | 61.93 | a | 73.13 | a | 76.24 | b | 70.00 | 55.50 | a | 49.24 | e | 44.50 | o | 56.24 | a | |||||
1996 | 38.62 | e | 46.62 | 47.10 | 53.21 | a | 59.81 | 69.13 | 77.00 | a | 74.15 | e | 67.14 | b | 55.84 | 46.97 | a | 42.16 | 56.48 | |||||||
1997 | 41.90 | 40.89 | 50.10 | 51.80 | 63.06 | 64.20 | 73.03 | 77.29 | 73.47 | 55.29 | 46.90 | 39.38 | b | 56.44 | ||||||||||||
1998 | 39.68 | 40.15 | a | 45.00 | 46.00 | 53.13 | 61.63 | 76.33 | d | 76.03 | 68.77 | 55.45 | 44.57 | 39.30 | a | 53.84 | ||||||||||
1999 | 40.47 | a | 43.43 | 44.06 | 48.33 | 57.06 | 66.53 | 74.87 | a | 72.87 | 68.97 | 57.00 | 47.93 | 40.17 | a | 55.14 | ||||||||||
2000 | 40.50 | a | 42.34 | 45.45 | 52.97 | 62.16 | 70.53 | 76.07 | a | 74.83 | a | 70.33 | 57.10 | b | 39.43 | 40.65 | 56.03 | |||||||||
2001 | 38.06 | 40.75 | 46.10 | 51.20 | 63.23 | 68.70 | 75.35 | 74.45 | b | 70.73 | 59.10 | 50.63 | 38.24 | b | 56.38 | |||||||||||
2002 | 40.35 | 43.04 | a | 43.13 | 53.87 | 60.07 | a | 69.37 | 75.87 | 71.30 | a | 71.07 | 55.70 | a | 48.13 | 39.03 | a | 55.91 | ||||||||
2003 | 45.42 | 44.11 | 46.68 | 49.87 | 59.48 | 66.03 | 76.60 | a | 75.10 | 69.55 | a | 63.03 | 44.73 | 37.87 | a | 56.54 | ||||||||||
2004 | 39.94 | 39.48 | 55.29 | 51.68 | e | 57.97 | a | 64.63 | 73.50 | a | 72.86 | c | 67.52 | a | 54.33 | a | 43.70 | c | 40.50 | a | 55.12 | |||||
2005 | 42.52 | 44.89 | 44.69 | b | 49.20 | 59.21 | b | 66.97 | 74.84 | 73.26 | 68.45 | a | 59.40 | a | 48.52 | a | 39.31 | b | 55.94 | |||||||
2006 | 38.26 | 41.74 | a | 43.74 | 51.33 | 59.45 | 71.50 | 75.90 | b | 71.97 | 65.86 | a | 56.37 | a | 49.08 | d | 39.29 | c | 55.37 | |||||||
2007 | 36.43 | a | 41.86 | 49.90 | 51.90 | 61.69 | b | 67.30 | 75.60 | a | 75.29 | 69.10 | a | 57.72 | b | 50.86 | b | 39.07 | a | 56.39 | ||||||
2008 | 39.39 | 40.07 | a | 45.03 | 51.60 | 56.00 | a | 68.17 | 73.43 | a | 73.96 | c | 68.86 | a | 55.48 | d | 47.31 | a | 40.59 | b | 54.99 | |||||
2009 | 42.00 | 42.61 | 46.58 | 48.72 | a | 62.45 | 66.47 | 78.10 | 74.24 | b | 70.63 | 55.55 | b | 48.14 | a | 39.66 | b | 56.26 | ||||||||
2010 | 41.70 | a | 43.93 | 44.94 | 48.92 | d | 53.81 | d | 63.25 | f | 77.04 | f | 75.60 | a | 70.48 | g | 58.72 | b | 45.55 | a | 44.48 | d | 50.85 | c | ||
2011 | 41.17 | a | 38.52 | a | 41.86 | q | 53.96 | c | 56.26 | d | 66.86 | a | 78.38 | r | 77.15 | e | 70.14 | b | 60.90 | a | 47.95 | j | 36.97 | a | 55.77 | c |
2012 | 40.90 | 40.00 | a | 44.88 | f | 53.42 | f | 59.85 | e | 67.05 | k | 76.19 | 76.10 | a | 69.52 | a | 58.95 | j | 49.82 | b | 40.61 | c | 56.62 | d | ||
2013 | 38.81 | 38.11 | 49.16 | 52.79 | a | 60.03 | b | 69.88 | d | 74.54 | e | 71.48 | d | 68.52 | a | 53.42 | 49.10 | 41.83 | a | 55.64 | ||||||
2014 | 42.58 | 44.11 | 49.32 | 53.39 | b | 61.03 | a | 69.83 | 75.55 | 73.55 | 72.60 | 60.77 | 48.82 | b | 43.27 | a | 57.90 | |||||||||
2015 | 42.23 | 47.46 | b | 51.93 | c | 51.89 | c | 56.14 | b | 70.64 | b | 75.19 | d | 77.46 | c | 73.59 | h | 63.35 | 46.35 | j | 37.79 | c | 57.41 | b | ||
2016 | 40.03 | b | 45.38 | c | 49.03 | b | 52.77 | 56.78 | d | 72.62 | f | 77.71 | j | 75.55 | 66.80 | j | 60.71 | j | 49.39 | l | 44.00 | e | 51.94 | e | ||
2017 | 42.12 | n | 45.24 | c | 50.76 | f | 54.77 | h | 59.81 | d | 69.37 | c | 77.16 | 76.48 | 67.20 | 60.90 | 54.52 | a | 44.17 | a | 61.65 | c | ||||
2018 | 47.26 | d | 42.89 | 48.74 | 56.43 | b | 60.03 | 68.93 | 77.10 | a | 76.73 | a | 73.22 | c | 60.07 | b | 44.41 | c | 39.55 | 57.95 | ||||||
2019 | 38.70 | a | 39.81 | a | 45.13 | a | 53.23 | 53.97 | a | 65.86 | a | 75.97 | 78.82 | c | 70.43 | 56.45 | 51.21 | a | 41.74 | 55.94 | ||||||
2020 | 39.90 | 40.15 | c | 47.82 | c | 51.97 | 61.45 | i | 67.23 | h | 76.52 | h | 80.10 | k | 70.05 | i | 60.26 | 51.08 | f | 40.00 | d | 46.68 | f | |||
2021 | 42.66 | b | 42.45 | f | 44.46 | e | 53.24 | e | 58.50 | k | 71.20 | j | 77.24 | n | 75.93 | b | 70.53 | 55.06 | 51.40 | 44.76 | b | 54.76 | d | |||
2022 | 41.61 | c | 42.04 | 47.68 | 55.30 | 60.55 | 72.50 | b | 79.58 | 76.48 | 72.37 | 61.80 | f | 44.40 | 42.17 | a | 57.70 | a | ||||||||
2023 | 40.68 | 41.42 | b | 43.94 | 51.23 | 59.81 | 63.40 | 80.36 | c | 78.87 | 70.07 | 62.52 | 51.69 | a | 43.03 | b | 57.25 | |||||||||
2024 | 40.81 | 43.83 | 44.50 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.32 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.12 | 41.16 | 44.75 | 50.12 | 56.79 | 65.19 | 74.27 | 73.29 | 67.63 | 56.58 | 45.54 | 39.45 | 54.26 | |||||||||||||
S.D. | 2.84 | 3.20 | 3.07 | 3.06 | 3.06 | 3.61 | 2.05 | 2.51 | 2.76 | 3.00 | 3.33 | 2.25 | 1.71 | |||||||||||||
SKEW | -0.05 | -0.05 | 0.58 | -0.25 | 0.20 | -0.18 | 0.26 | -0.07 | -0.33 | 0.12 | 0.10 | 0.34 | 0.08 | |||||||||||||
MAX | 47.26 | 48.46 | 55.29 | 56.59 | 63.23 | 72.50 | 80.36 | 78.87 | 73.47 | 63.35 | 54.52 | 44.76 | 57.95 | |||||||||||||
MIN | 31.53 | 34.28 | 39.19 | 41.47 | 51.10 | 57.50 | 69.42 | 66.90 | 61.14 | 49.35 | 38.30 | 34.87 | 51.09 | |||||||||||||
YRS | 80 | 80 | 77 | 77 | 78 | 75 | 75 | 78 | 75 | 77 | 75 | 79 | 66 |