YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 40.31 | 37.78 | 39.24 | 53.55 | 61.11 | 68.57 | 74.76 | 73.45 | 69.33 | 57.48 | 42.13 | 37.63 | 54.61 | |||||||||||||
1949 | 25.39 | 31.07 | 43.48 | 55.52 | 59.13 | 69.12 | 75.90 | 73.05 | 70.60 | 53.35 | 51.42 | 35.77 | 53.65 | |||||||||||||
1950 | 35.27 | 44.77 | 47.47 | 56.73 | 60.19 | 69.60 | 73.27 | 72.76 | 65.08 | 63.26 | 50.45 | 44.98 | 56.99 | |||||||||||||
1951 | 37.35 | 40.23 | 44.15 | 51.78 | 60.87 | 68.05 | 77.32 | 71.55 | 69.02 | 55.87 | 43.97 | 35.94 | 54.67 | |||||||||||||
1952 | 36.05 | 38.74 | 38.19 | 52.03 | 63.18 | 68.55 | 73.66 | 74.39 | 69.33 | 61.92 | 41.42 | 37.32 | 54.57 | |||||||||||||
1953 | 43.61 | 39.20 | 45.95 | 51.35 | 54.71 | 69.98 | 75.31 | 72.35 | 69.52 | 56.35 | 48.03 | 36.56 | 55.24 | |||||||||||||
1954 | 38.45 | 45.70 | 42.84 | 57.10 | 63.52 | 69.02 | 76.63 | 71.58 | 69.08 | 59.61 | 49.45 | 37.95 | 56.74 | |||||||||||||
1955 | 32.61 | 35.25 | 45.16 | 49.77 | 59.19 | 68.32 | 72.81 | 72.44 | 68.52 | 60.65 | 46.17 | 42.45 | 54.44 | |||||||||||||
1956 | 42.15 | 35.69 | 47.11 | 50.63 | 62.52 | 72.65 | 74.37 | 71.66 | 72.32 | 56.90 | 43.03 | 38.45 | 55.62 | |||||||||||||
1957 | 37.94 | 46.68 | 46.87 | 50.63 | 55.98 | 71.83 | 75.77 | 72.48 | 68.57 | 54.69 | 41.57 | 41.85 | 55.41 | |||||||||||||
1958 | 38.48 | 44.29 | 40.39 | 50.72 | 64.92 | 71.78 | 76.18 | 75.69 | 67.25 | 58.45 | 45.32 | 44.79 | 56.52 | |||||||||||||
1959 | 40.65 | 38.27 | 47.05 | 56.12 | 59.71 | 73.47 | 78.94 | 71.58 | 66.95 | 58.26 | 46.43 | 39.60 | 56.42 | |||||||||||||
1960 | 30.79 | 37.03 | 49.90 | 54.63 | 61.19 | 74.82 | 76.97 | 75.89 | 70.83 | 55.45 | 46.45 | 37.40 | 55.95 | |||||||||||||
1961 | 40.05 | 42.64 | 45.11 | 54.18 | 60.84 | 74.38 | 76.97 | 73.29 | 64.68 | 55.50 | 43.23 | 36.08 | 55.58 | |||||||||||||
1962 | 35.76 | 40.82 | 40.60 | 57.98 | 58.06 | 68.87 | 74.95 | 76.18 | 69.23 | 57.74 | 50.35 | 41.42 | 56.00 | |||||||||||||
1963 | 35.69 | b | 46.66 | 44.29 | 49.03 | 63.61 | 67.35 | 78.00 | 72.56 | 69.15 | 60.82 | 47.18 | 39.50 | 56.15 | ||||||||||||
1964 | 35.24 | 36.59 | 41.15 | 49.03 | 59.56 | 68.37 | 76.27 | 72.63 | 67.27 | 61.98 | 41.07 | 38.68 | 53.99 | |||||||||||||
1965 | 40.50 | 39.89 | 42.03 | 48.60 | 54.94 | 62.42 | 73.10 | 71.74 | 62.97 | 58.65 | 48.13 | 37.68 | 53.39 | |||||||||||||
1966 | 34.24 | 34.89 | 46.55 | 53.72 | 62.89 | 68.32 | 75.08 | 73.34 | 67.52 | 55.56 | 47.45 | 37.61 | 54.76 | |||||||||||||
1967 | 38.35 | 41.96 | 47.65 | 46.30 | 58.77 | 65.88 | 75.39 | 73.00 | 67.48 | 58.24 | 49.28 | 29.19 | 54.29 | |||||||||||||
1968 | 31.02 | 45.78 | 46.60 | 49.47 | 59.29 | 69.80 | 72.84 | 67.95 | 66.32 | 57.05 | 45.53 | 37.06 | 54.06 | |||||||||||||
1969 | 44.06 | 39.61 | 42.95 | 52.80 | 62.23 | 67.80 | 75.32 | 75.40 | 68.47 | 52.13 | 45.23 | 41.24 | 55.60 | |||||||||||||
1970 | 37.79 | 44.00 | 43.56 | 47.28 | 61.76 | 70.03 | 76.31 | 74.34 | 63.93 | 52.94 | 46.97 | 37.24 | 54.68 | |||||||||||||
1971 | 38.44 | 40.04 | 46.60 | 50.65 | 55.95 | 69.23 | 77.42 | 72.10 | 65.92 | 51.02 | 43.77 | 33.44 | 53.71 | |||||||||||||
1972 | 38.27 | 43.84 | 53.05 | 53.65 | 60.69 | 69.52 | 78.23 | 74.39 | 68.37 | 57.10 | 42.15 | 34.40 | 56.14 | |||||||||||||
1973 | 34.95 | 40.07 | 39.15 | 48.30 | 60.90 | 69.00 | 74.89 | 72.29 | 66.00 | 56.94 | 45.32 | 39.71 | 53.96 | |||||||||||||
1974 | 36.32 | 38.50 | 47.08 | 50.72 | 61.26 | 74.80 | 73.27 | 72.23 | 67.03 | 55.39 | 45.43 | 35.65 | 54.81 | |||||||||||||
1975 | 38.11 | 39.38 | 42.69 | 45.62 | 58.40 | 69.15 | 75.32 | 73.52 | 67.93 | 55.71 | 44.38 | 37.48 | 53.98 | |||||||||||||
1976 | 38.94 | 42.90 | 41.76 | 48.35 | 60.90 | 69.38 | 74.89 | 72.55 | 64.83 | 53.69 | 46.50 | 37.47 | 54.35 | |||||||||||||
1977 | 35.82 | 41.23 | 40.27 | 53.97 | 55.66 | 71.82 | 76.34 | 74.82 | 68.18 | 58.29 | 47.98 | 44.19 | 55.72 | |||||||||||||
1978 | 39.37 | 40.50 | 47.58 | 49.50 | 58.40 | 71.80 | 76.16 | 73.89 | 66.60 | 59.73 | 44.45 | 33.13 | 55.09 | |||||||||||||
1979 | 31.52 | 38.21 | 44.23 | 52.20 | 59.27 | 69.50 | 74.40 | 72.37 | 72.75 | 61.98 | 44.08 | 41.34 | 55.16 | |||||||||||||
1980 | 40.15 | 46.19 | 44.97 | 53.58 | 58.37 | 70.97 | 76.24 | 74.42 | 68.58 | 55.31 | 47.08 | 44.27 | 56.68 | |||||||||||||
1981 | 41.87 | 44.71 | 47.79 | 57.77 | 63.32 | 76.58 | 75.56 | 73.50 | 67.10 | 52.90 | 47.58 | 41.48 | 57.52 | |||||||||||||
1982 | 36.16 | 41.23 | 43.94 | 49.48 | 57.65 | 69.65 | 75.44 | 73.19 | 66.87 | 54.74 | 45.97 | 37.73 | 54.34 | |||||||||||||
1983 | 39.26 | 42.18 | 44.34 | 45.63 | 58.23 | 66.58 | 75.53 | 73.69 | 69.78 | 56.58 | 46.25 | 42.73 | 55.07 | |||||||||||||
1984 | 39.73 | 40.79 | 47.15 | 49.90 | 67.73 | 69.42 | 74.08 | 71.85 | 68.58 | 52.08 | 44.60 | 36.90 | 55.23 | |||||||||||||
1985 | 36.26 | 37.93 | 43.89 | 55.27 | 60.56 | 71.73 | 75.71 | 73.45 | 62.15 | 56.32 | 43.32 | 40.02 | 54.72 | |||||||||||||
1986 | 44.37 | 43.46 | 49.47 | 53.30 | 61.69 | 70.92 | 72.63 | 73.76 | 62.32 | 52.40 | 45.90 | 38.71 | 55.74 | |||||||||||||
1987 | 36.37 | 39.11 | 41.26 | 55.25 | 59.52 | 71.75 | 72.56 | 71.45 | 66.52 | 59.94 | 43.82 | 35.37 | 54.41 | |||||||||||||
1988 | 37.87 | 43.34 | 45.26 | 52.18 | 59.56 | 71.42 | 75.61 | 72.29 | 64.32 | 61.61 | 45.73 | 36.95 | 55.51 | |||||||||||||
1989 | 35.82 | 42.25 | 50.98 | 60.17 | 63.19 | 71.55 | 77.10 | 72.53 | 68.52 | 56.69 | 47.35 | 39.58 | 57.14 | |||||||||||||
1990 | 35.61 | 38.68 | 47.24 | 54.85 | 59.24 | 73.07 | 73.65 | 70.81 | 68.27 | 57.32 | 45.33 | 32.23 | 54.69 | |||||||||||||
1991 | 37.24 | 45.29 | 40.47 | 50.92 | 57.63 | 66.42 | 75.52 | 73.89 | 67.45 | 58.89 | 44.60 | 37.10 | 54.62 | |||||||||||||
1992 | 36.68 | 43.50 | 45.74 | 57.40 | 61.66 | 68.15 | 73.95 | 72.40 | 69.27 | 59.60 | 41.95 | 35.73 | 55.50 | |||||||||||||
1993 | 39.81 | 40.18 | 48.18 | 54.97 | 62.45 | 69.17 | 74.19 | 73.35 | 68.22 | 56.82 | 43.43 | 38.87 | 55.80 | |||||||||||||
1994 | 40.35 | 39.57 | 48.73 | 53.68 | 61.26 | 75.10 | 76.95 | 76.90 | ----- | z | 53.95 | 40.73 | 39.65 | 55.17 | a | |||||||||||
1995 | 38.52 | 46.95 | 46.52 | 50.38 | 56.23 | 67.20 | 75.84 | 77.02 | 69.60 | 58.05 | 51.85 | 41.05 | 56.60 | |||||||||||||
1996 | 39.94 | 45.74 | 47.69 | 55.78 | 65.00 | 72.92 | 77.32 | 75.65 | 65.15 | 55.06 | 46.10 | 40.60 | 57.25 | |||||||||||||
1997 | 37.55 | 40.07 | 49.68 | ----- | z | 66.19 | 68.28 | 75.08 | 73.50 | 68.93 | 54.47 | 47.00 | 35.42 | 56.02 | a | |||||||||||
1998 | 40.77 | 38.38 | 44.87 | 47.50 | 57.13 | 66.31 | a | 76.48 | 75.66 | 67.90 | 54.77 | 46.57 | 39.39 | 54.64 | ||||||||||||
1999 | 42.08 | 43.80 | 47.65 | 47.17 | 60.29 | 69.13 | 72.94 | 71.47 | 66.30 | 58.00 | 50.30 | 37.73 | 55.57 | |||||||||||||
2000 | 41.52 | 43.33 | 44.95 | 56.63 | 65.89 | 72.88 | 75.85 | 73.03 | 69.18 | 54.95 | 39.82 | 40.84 | 56.57 | |||||||||||||
2001 | 35.13 | 38.96 | 48.00 | 51.83 | 66.15 | 72.23 | 74.92 | 73.76 | 70.25 | 60.18 | 47.78 | 36.03 | 56.27 | |||||||||||||
2002 | 37.94 | 42.68 | 44.95 | 56.75 | 62.05 | 73.25 | 77.88 | a | 76.06 | 68.73 | 55.60 | 47.43 | 37.81 | 56.76 | ||||||||||||
2003 | 45.21 | 41.27 | 46.23 | 50.02 | 63.61 | 71.53 | 79.23 | 74.06 | 69.47 | 63.61 | 44.45 | 39.35 | 57.34 | |||||||||||||
2004 | 38.50 | 38.07 | 54.21 | 53.18 | 63.84 | 71.25 | 75.37 | 72.40 | 67.05 | 55.19 | 43.12 | 39.50 | 55.97 | |||||||||||||
2005 | 40.58 | 41.93 | 45.48 | 51.22 | 62.71 | 68.78 | 77.37 | 71.69 | 67.70 | 57.74 | 47.93 | 40.53 | 56.14 | |||||||||||||
2006 | 39.71 | 43.07 | 42.60 | 53.88 | 65.16 | 74.73 | b | 76.79 | 72.56 | 64.78 | 55.23 | 48.37 | 38.13 | e | 56.25 | |||||||||||
2007 | 35.39 | 43.25 | 50.21 | 54.85 | 64.13 | 72.73 | 78.42 | 77.05 | 69.35 | 57.85 | 51.67 | c | 36.42 | 57.61 | ||||||||||||
2008 | 36.31 | 41.74 | 47.73 | 53.13 | 58.06 | 72.87 | 76.45 | a | 75.48 | 69.05 | 58.50 | 49.70 | 39.06 | 56.51 | ||||||||||||
2009 | 42.05 | 41.96 | 48.06 | 51.73 | 66.50 | 68.33 | 77.90 | 75.39 | 69.83 | 54.98 | 48.90 | 35.16 | 56.73 | |||||||||||||
2010 | 39.57 | a | 40.91 | 44.93 | a | 50.85 | 58.34 | 70.83 | 77.66 | 74.27 | 71.13 | 57.87 | 46.62 | e | 42.95 | 56.33 | ||||||||||
2011 | 38.16 | 37.20 | 49.23 | 53.68 | 58.27 | 70.55 | 76.66 | 78.73 | 70.43 | 58.60 | 45.53 | 36.21 | 56.10 | |||||||||||||
2012 | 41.84 | 41.57 | a | 47.15 | 56.00 | 64.84 | 74.43 | 75.97 | 76.10 | 69.38 | 59.65 | 49.43 | 38.52 | 57.91 | ||||||||||||
2013 | 35.40 | 38.30 | 51.35 | 54.63 | 62.87 | 75.62 | a | 76.77 | 74.08 | 66.65 | 53.92 | 47.43 | 37.94 | 56.25 | ||||||||||||
2014 | 43.66 | 46.18 | 49.82 | 54.78 | 62.63 | 72.85 | 76.92 | 71.52 | 68.92 | 60.97 | 47.55 | 41.34 | 58.09 | |||||||||||||
2015 | 41.90 | 48.89 | 51.98 | 53.90 | 58.26 | 74.50 | 73.97 | 76.44 | 71.42 | 60.35 | 43.62 | 37.42 | 57.72 | |||||||||||||
2016 | 39.69 | 47.22 | 51.10 | b | 53.90 | a | 59.76 | 76.35 | 78.24 | 72.18 | 66.18 | 61.19 | 48.67 | 40.50 | 57.92 | |||||||||||
2017 | 39.08 | 45.96 | 52.02 | 55.32 | 60.95 | 75.33 | 77.16 | 73.61 | 66.57 | 60.34 | 53.60 | 43.66 | 58.63 | |||||||||||||
2018 | 43.82 | 42.14 | 47.65 | 58.48 | 63.45 | a | 73.98 | 77.37 | 74.76 | 71.57 | 55.65 | 45.47 | 39.47 | 57.82 | ||||||||||||
2019 | 39.63 | 35.80 | 47.13 | 55.77 | 55.69 | 71.08 | 76.81 | 77.85 | 69.05 | 55.29 | 48.18 | 38.94 | 55.94 | |||||||||||||
2020 | 40.45 | 42.07 | 45.87 | a | 53.88 | 64.87 | 70.62 | 77.26 | 78.48 | 70.40 | 61.42 | 48.85 | 37.50 | 57.64 | ||||||||||||
2021 | 37.48 | 41.45 | 43.90 | 56.17 | 62.85 | 75.90 | 76.23 | 73.90 | 69.45 | 54.24 | 50.48 | 40.58 | 56.89 | |||||||||||||
2022 | 39.60 | 39.00 | 46.73 | 55.15 | 63.52 | 73.37 | 77.23 | 73.08 | 69.95 | 56.03 | 41.38 | b | 39.55 | 56.21 | ||||||||||||
2023 | 36.82 | 37.79 | 43.27 | 54.27 | 61.10 | 66.87 | 80.52 | 76.39 | 68.57 | 59.90 | 48.50 | 42.77 | 56.40 | |||||||||||||
2024 | 38.98 | 42.31 | 45.06 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.12 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.29 | 41.28 | 45.92 | 52.76 | 60.95 | 70.79 | 75.90 | 73.70 | 68.03 | 57.20 | 46.24 | 38.62 | 55.80 | |||||||||||||
S.D. | 3.35 | 3.37 | 3.36 | 3.22 | 2.98 | 2.84 | 1.67 | 1.92 | 2.18 | 2.85 | 2.89 | 2.93 | 1.23 | |||||||||||||
SKEW | -0.76 | -0.17 | -0.02 | -0.22 | -0.01 | -0.03 | -0.03 | 0.39 | -0.55 | 0.14 | 0.03 | -0.17 | 0.12 | |||||||||||||
MAX | 45.21 | 48.89 | 54.21 | 60.17 | 67.73 | 76.58 | 80.52 | 78.73 | 72.75 | 63.61 | 53.60 | 44.98 | 58.63 | |||||||||||||
MIN | 25.39 | 31.07 | 38.19 | 45.62 | 54.71 | 62.42 | 72.56 | 67.95 | 62.15 | 51.02 | 39.82 | 29.19 | 53.39 | |||||||||||||
YRS | 77 | 77 | 77 | 75 | 76 | 76 | 76 | 76 | 75 | 76 | 76 | 76 | 74 |