YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 36.16 | 35.76 | 40.74 | 47.73 | 50.71 | 59.53 | 62.13 | 60.55 | 55.93 | 49.23 | 37.37 | 36.42 | 47.69 | |||||||||||||
1949 | 28.10 | 35.46 | 43.94 | 49.73 | 53.90 | 61.17 | 62.90 | 59.81 | 57.33 | 45.06 | 42.80 | 33.90 | 47.84 | |||||||||||||
1950 | 33.35 | 39.50 | 40.39 | 48.07 | 52.19 | 56.37 | 65.29 | 61.48 | 57.23 | 50.52 | 47.37 | 44.68 | 49.70 | |||||||||||||
1951 | 37.39 | 38.14 | 39.29 | 47.10 | 53.23 | 57.23 | 61.10 | 59.97 | 57.37 | 46.52 | 41.93 | 35.13 | 47.87 | |||||||||||||
1952 | 36.03 | 38.31 | 39.87 | 48.10 | 53.42 | 54.27 | 65.45 | 61.35 | 59.13 | 52.10 | 39.17 | 38.94 | 48.84 | |||||||||||||
1953 | 41.29 | 34.75 | 39.35 | 45.97 | 48.61 | 55.07 | 65.13 | 59.97 | 59.60 | 46.97 | 43.50 | 33.84 | 47.84 | |||||||||||||
1954 | 35.55 | 39.68 | 40.45 | 50.30 | 53.84 | 56.80 | 64.61 | 58.39 | 54.70 | 47.35 | 42.87 | 36.48 | 48.42 | |||||||||||||
1955 | 33.97 | 34.39 | 39.81 | 41.53 | 51.90 | 56.67 | 59.94 | 62.45 | 57.47 | 48.74 | 37.63 | 43.71 | 47.35 | |||||||||||||
1956 | 41.06 | 33.83 | 39.65 | 47.27 | 53.35 | 58.07 | 63.65 | 59.26 | 58.13 | 48.61 | 36.90 | 32.94 | 47.73 | |||||||||||||
1957 | 33.45 | 45.57 | 43.48 | 47.43 | 53.03 | 61.00 | 63.55 | 59.03 | 58.60 | 50.39 | 40.17 | 37.32 | 49.42 | |||||||||||||
1958 | 37.90 | 44.46 | 42.19 | 46.63 | 55.42 | 58.33 | 63.87 | 67.61 | 59.27 | 53.52 | 40.20 | 35.71 | 50.43 | |||||||||||||
1959 | 40.10 | 38.75 | 43.48 | 50.13 | 50.84 | 59.67 | 66.10 | 61.39 | 57.67 | 51.16 | 38.17 | 32.97 | 49.20 | |||||||||||||
1960 | 36.26 | 39.59 | 43.77 | 46.67 | 51.00 | 62.60 | 66.42 | 60.68 | 58.00 | 47.68 | 41.37 | 35.16 | 49.10 | |||||||||||||
1961 | 34.39 | 40.00 | 41.06 | 46.60 | 50.48 | 62.57 | 65.42 | 65.81 | 55.70 | 47.74 | 38.13 | 37.26 | 48.76 | |||||||||||||
1962 | 32.55 | 41.29 | 40.03 | 49.10 | 50.77 | 58.83 | 63.00 | 61.55 | 57.67 | 50.77 | 41.93 | 36.19 | 48.64 | |||||||||||||
1963 | 29.74 | 46.32 | 41.23 | 45.03 | 54.13 | 58.37 | 61.10 | 61.26 | 61.77 | 53.26 | 43.27 | 35.00 | 49.21 | |||||||||||||
1964 | 34.55 | 32.62 | 37.94 | 43.80 | 49.65 | 56.73 | 63.03 | 61.23 | 53.37 | 52.19 | 40.60 | 41.35 | 47.25 | |||||||||||||
1965 | 39.29 | 37.25 | 42.87 | 49.47 | 50.39 | 55.50 | 61.39 | 62.35 | 52.30 | 48.10 | 44.47 | 35.19 | 48.21 | |||||||||||||
1966 | 32.32 | 35.25 | 42.19 | 48.83 | 54.42 | 59.40 | 60.29 | 62.35 | 56.43 | 48.58 | 45.80 | 40.00 | 48.82 | |||||||||||||
1967 | 36.77 | 39.50 | 43.55 | 43.43 | 53.10 | 58.40 | 66.16 | 66.03 | 61.60 | 48.58 | 45.63 | 32.32 | 49.59 | |||||||||||||
1968 | 35.10 | 47.14 | 43.13 | 45.40 | 51.77 | 59.90 | 64.52 | 59.81 | 55.43 | 49.39 | 43.30 | 34.71 | 49.13 | |||||||||||||
1969 | 39.84 | 39.32 | 40.29 | 45.83 | 54.19 | 58.80 | 63.94 | 61.42 | 58.70 | 44.06 | 37.90 | 34.48 | 48.23 | |||||||||||||
1970 | 39.55 | 40.82 | 41.81 | 41.60 | 53.81 | 60.50 | 66.16 | 62.10 | 54.13 | 47.13 | 42.30 | 38.65 | 49.05 | |||||||||||||
1971 | 36.39 | 36.11 | 40.48 | 45.10 | 51.23 | 57.20 | 64.06 | 63.84 | 56.10 | 44.23 | 36.77 | 34.29 | 47.15 | |||||||||||||
1972 | 34.26 | 40.21 | 45.19 | 46.17 | 53.81 | 61.43 | 64.23 | 63.74 | 56.97 | 50.29 | 43.40 | 34.19 | 49.49 | |||||||||||||
1973 | 36.26 | 43.04 | 41.32 | 46.70 | 56.90 | 61.93 | 63.42 | 62.16 | 55.73 | 48.61 | 42.57 | 40.45 | 49.92 | |||||||||||||
1974 | 39.77 | 36.57 | 46.19 | 46.07 | 52.77 | 60.97 | 65.29 | 62.39 | 60.07 | 52.77 | 41.23 | 36.84 | 50.08 | |||||||||||||
1975 | 34.42 | 39.57 | 41.13 | 41.23 | 51.74 | 58.33 | 61.84 | 59.16 | 59.93 | 47.87 | 37.03 | 32.61 | 47.07 | |||||||||||||
1976 | 30.81 | 39.21 | 39.68 | 44.00 | 53.52 | 56.13 | 63.23 | 58.39 | 59.10 | 51.06 | 43.27 | 31.94 | 47.53 | |||||||||||||
1977 | 39.10 | 40.21 | 39.48 | 49.37 | 51.55 | 64.53 | 64.74 | 65.45 | 59.17 | 51.06 | 42.00 | 42.81 | 50.79 | |||||||||||||
1978 | 44.87 | 44.07 | 50.87 | 48.23 | 54.16 | 60.10 | 65.94 | 65.74 | 58.37 | 53.58 | 40.27 | 34.61 | 51.73 | |||||||||||||
1979 | 39.03 | 41.18 | 47.74 | 49.37 | 55.32 | 60.73 | 66.19 | 65.39 | 62.93 | 54.77 | 42.17 | 35.23 | 51.67 | |||||||||||||
1980 | 42.90 | 44.07 | 42.61 | 48.47 | 53.16 | 57.97 | 68.26 | 64.61 | 59.43 | 52.13 | 39.97 | 37.55 | 50.93 | |||||||||||||
1981 | 39.94 | 42.71 | 45.06 | 49.87 | 56.10 | 66.50 | 67.35 | 66.16 | 60.73 | 48.06 | 45.87 | 40.81 | 52.43 | |||||||||||||
1982 | 34.52 | 40.43 | 42.48 | 45.53 | 53.87 | 58.73 | 65.19 | 65.23 | 59.93 | 52.39 | 43.20 | 37.42 | 49.91 | |||||||||||||
1983 | 39.42 | 44.93 | 47.19 | 46.70 | 55.06 | 61.30 | 63.06 | 68.39 | 64.80 | 55.81 | 45.87 | 44.10 | 53.05 | |||||||||||||
1984 | 40.26 | 39.62 | 45.81 | 47.10 | 58.84 | 61.93 | 71.52 | 68.10 | 65.90 | 50.61 | 44.13 | 39.84 | 52.80 | |||||||||||||
1985 | 36.97 | 38.93 | 42.26 | 52.57 | 54.94 | 66.13 | 70.58 | 64.06 | 59.83 | 51.45 | 43.40 | 37.87 | 51.58 | |||||||||||||
1986 | 45.81 | 46.96 | 49.90 | 49.20 | 55.65 | 63.20 | 66.45 | 67.16 | 57.97 | 52.68 | 42.73 | 40.48 | 53.18 | |||||||||||||
1987 | 36.94 | 42.18 | 44.77 | 51.00 | 57.48 | 62.37 | 61.65 | 63.74 | 59.63 | 56.71 | 41.77 | 34.68 | 51.08 | |||||||||||||
1988 | 36.61 | 37.03 | 42.16 | 48.73 | 52.23 | 60.87 | 69.35 | 65.48 | 60.20 | 53.10 | 44.20 | 35.48 | 50.45 | |||||||||||||
1989 | 31.94 | 38.79 | 47.13 | 52.70 | 55.71 | 61.73 | 65.71 | 63.10 | 59.37 | 51.42 | 39.83 | 32.90 | 50.03 | |||||||||||||
1990 | 35.03 | 37.00 | 45.26 | 51.97 | 54.10 | 61.73 | 68.68 | 66.10 | 61.03 | 51.90 | 38.87 | 29.71 | 50.11 | |||||||||||||
1991 | 36.42 | 42.68 | 42.71 | 46.67 | 52.19 | 59.47 | 68.39 | 64.00 | 64.07 | 55.90 | 43.53 | 36.74 | 51.06 | |||||||||||||
1992 | 36.58 | 45.72 | 49.13 | 52.70 | 61.13 | 63.17 | 66.90 | 66.94 | 60.97 | 55.52 | 42.67 | 37.13 | 53.21 | |||||||||||||
1993 | 40.00 | 42.54 | 49.58 | 49.20 | 55.87 | 61.03 | 65.06 | 64.13 | 59.40 | 54.10 | 41.17 | 37.71 | 51.65 | |||||||||||||
1994 | 36.26 | 39.18 | 46.58 | 50.13 | 55.74 | 61.07 | 67.19 | 65.23 | 60.77 | 51.26 | 38.00 | 38.52 | 50.83 | |||||||||||||
1995 | 44.97 | 46.32 | 46.19 | 48.50 | 53.35 | 58.00 | 65.16 | 66.81 | 61.20 | 51.87 | 45.67 | 42.32 | 52.53 | |||||||||||||
1996 | 40.97 | 45.72 | 45.52 | 50.23 | 56.32 | 62.27 | 69.58 | 67.58 | 59.30 | 51.13 | 44.70 | 42.35 | 52.97 | |||||||||||||
1997 | 42.19 | 39.89 | 46.26 | 49.30 | 60.58 | 62.23 | 66.71 | 66.10 | 63.30 | 49.94 | 47.60 | 36.58 | 52.56 | |||||||||||||
1998 | 41.39 | 42.57 | 45.94 | 47.80 | 51.52 | 59.23 | 67.06 | 68.58 | 63.50 | 50.03 | 43.30 | 32.45 | 51.11 | |||||||||||||
1999 | 37.23 | 39.68 | 43.23 | 46.40 | 53.74 | 60.90 | 65.16 | 63.65 | 62.13 | 53.32 | 44.57 | 34.94 | 50.41 | |||||||||||||
2000 | 41.39 | 44.83 | 45.81 | 50.87 | 57.39 | 65.17 | 63.68 | 66.32 | 60.77 | 53.32 | 39.60 | 38.10 | 52.27 | |||||||||||||
2001 | 35.90 | 40.14 | 47.97 | 46.93 | 61.61 | 64.03 | 66.71 | 66.16 | 61.87 | 55.10 | 46.67 | 40.10 | 52.77 | |||||||||||||
2002 | 37.65 | 40.54 | 43.29 | 50.43 | 55.00 | 62.43 | 68.58 | 63.87 | 62.13 | 52.06 | 45.67 | 40.74 | 51.87 | |||||||||||||
2003 | 43.26 | 41.43 | 45.81 | 48.37 | 55.61 | 62.77 | 71.26 | 66.55 | 63.90 | 54.97 | 41.83 | 41.23 | 53.08 | |||||||||||||
2004 | 40.00 | 41.62 | 50.16 | 52.03 | 56.45 | 62.37 | 67.74 | 65.94 | 61.03 | 53.35 | 43.60 | 39.71 | 52.83 | |||||||||||||
2005 | 41.61 | 45.89 | 48.32 | 47.73 | 56.52 | 59.43 | 71.52 | 68.71 | 59.47 | 53.55 | 46.20 | 43.71 | 53.56 | |||||||||||||
2006 | 40.06 | 40.71 | 40.97 | 50.40 | 58.06 | 65.93 | 72.29 | 64.26 | 60.43 | 51.35 | 46.27 | 36.71 | 52.29 | |||||||||||||
2007 | 31.77 | 42.00 | 47.06 | 50.37 | 56.10 | 62.20 | 67.77 | 67.23 | 60.17 | 52.23 | 45.67 | 36.45 | 51.58 | |||||||||||||
2008 | 38.77 | 40.83 | 44.87 | 47.97 | 56.90 | 63.07 | 68.71 | 68.77 | 61.90 | 53.13 | 47.30 | 37.97 | 52.52 | |||||||||||||
2009 | 38.26 | 42.00 | 44.13 | 48.33 | 61.23 | 61.77 | 68.87 | 66.48 | 64.93 | 52.13 | 42.00 | 39.00 | 52.43 | |||||||||||||
2010 | 41.71 | 44.64 | 44.16 | 46.57 | 52.26 | 62.93 | 67.19 | 63.90 | 61.53 | 56.84 | 43.43 | 44.10 | 52.44 | |||||||||||||
2011 | 40.65 | 38.25 | 45.74 | 48.63 | 51.48 | 61.50 | 67.13 | 66.45 | 65.93 | 56.13 | 43.93 | 32.84 | 51.56 | |||||||||||||
2012 | 37.48 | 41.97 | 44.94 | 51.23 | 57.48 | 62.87 | 67.81 | 70.87 | 65.90 | 56.77 | 47.73 | 43.68 | 54.06 | |||||||||||||
2013 | 36.23 | 39.29 | 49.65 | 53.83 | 59.45 | 66.27 | 71.87 | 67.71 | 64.20 | 52.87 | 46.40 | 34.81 | 53.55 | |||||||||||||
2014 | 39.55 | 46.86 | 50.42 | 53.63 | 60.16 | 65.50 | 72.61 | 70.13 | 66.90 | 58.32 | 47.47 | 44.39 | 56.33 | |||||||||||||
2015 | 40.52 | 46.32 | 50.32 | 51.03 | 55.55 | 67.07 | 69.29 | 67.65 | 64.97 | 59.39 | 41.47 | 36.74 | 54.19 | |||||||||||||
2016 | 42.35 | 43.38 | 48.16 | 52.90 | 58.19 | 65.30 | 67.97 | 66.74 | 60.90 | 54.06 | 46.30 | 38.45 | 53.73 | |||||||||||||
2017 | 40.55 | 46.11 | 47.19 | 50.30 | 57.90 | 65.90 | 71.13 | 70.90 | 64.20 | 51.42 | 47.57 | 35.45 | 54.05 | |||||||||||||
2018 | 43.71 | 40.82 | 46.32 | 52.27 | 57.71 | 64.10 | 73.68 | 67.52 | 63.03 | 55.48 | 46.37 | 43.10 | 54.51 | |||||||||||||
2019 | 44.00 | 41.11 | 47.35 | 54.80 | 56.16 | 67.10 | 69.48 | 70.10 | 63.87 | 51.65 | 45.37 | 43.61 | 54.55 | |||||||||||||
2020 | 40.74 | 41.76 | 46.90 | 53.10 | 59.90 | 65.37 | 69.35 | 72.06 | 66.63 | 58.00 | 43.23 | 39.35 | 54.70 | |||||||||||||
2021 | 41.26 | 43.32 | 44.90 | 52.10 | 59.06 | 68.13 | 74.06 | 70.16 | 65.13 | 53.68 | 47.97 | 41.29 | 55.09 | |||||||||||||
2022 | 39.13 | 40.11 | 48.10 | 51.83 | 57.74 | 66.37 | 70.58 | 71.65 | 69.00 | 57.35 | 40.80 | 41.00 | 54.47 | |||||||||||||
2023 | 41.52 | 38.11 | 45.19 | 50.97 | 57.97 | 62.47 | 71.42 | 70.19 | 63.80 | 56.65 | 45.27 | 43.32 | 53.91 | |||||||||||||
2024 | 44.29 | 45.24 | 47.74 | 49.63 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.76 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.16 | 40.94 | 44.39 | 48.60 | 54.85 | 61.28 | 66.50 | 64.84 | 60.42 | 51.86 | 42.90 | 37.77 | 51.03 | |||||||||||||
S.D. | 3.74 | 3.43 | 3.26 | 2.92 | 3.00 | 3.18 | 3.30 | 3.43 | 3.41 | 3.32 | 3.00 | 3.65 | 2.31 | |||||||||||||
SKEW | -0.29 | -0.11 | 0.09 | -0.29 | 0.30 | 0.03 | 0.23 | 0.02 | 0.08 | -0.08 | -0.28 | 0.20 | 0.05 | |||||||||||||
MAX | 45.81 | 47.14 | 50.87 | 54.80 | 61.61 | 68.13 | 74.06 | 72.06 | 69.00 | 59.39 | 47.97 | 44.68 | 56.33 | |||||||||||||
MIN | 28.10 | 32.62 | 37.94 | 41.23 | 48.61 | 54.27 | 59.94 | 58.39 | 52.30 | 44.06 | 36.77 | 29.71 | 47.07 | |||||||||||||
YRS | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 |