YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 40.65 | 40.43 | a | 44.23 | a | 71.53 | 72.42 | 81.40 | 89.23 | 87.29 | 84.43 | 69.35 | 51.37 | 50.42 | 65.23 | |||||||||||
1949 | 36.60 | a | 49.57 | 57.71 | 62.69 | a | 72.84 | 78.83 | 87.58 | 86.52 | 80.67 | 68.23 | 65.03 | 50.52 | 66.40 | |||||||||||
1950 | 53.32 | 55.64 | 58.90 | a | 66.83 | 74.23 | 83.60 | 83.29 | 83.94 | 76.07 | 79.10 | 59.55 | a | 54.63 | a | 69.09 | ||||||||||
1951 | 43.03 | 55.00 | 53.32 | 60.63 | 74.13 | a | 81.27 | 91.58 | 88.94 | 81.13 | 68.06 | 53.90 | 47.81 | 66.57 | ||||||||||||
1952 | 53.42 | 48.90 | 51.10 | 63.70 | 72.68 | 91.00 | 91.23 | a | 89.13 | 81.80 | 72.00 | 48.43 | 47.10 | 67.54 | ||||||||||||
1953 | 53.61 | 50.07 | 60.71 | 62.60 | 70.45 | 89.63 | 90.97 | 88.42 | 84.77 | 70.13 | 58.43 | 44.90 | 68.72 | |||||||||||||
1954 | 53.39 | 60.64 | 54.23 | 73.07 | 73.87 | 89.70 | 92.71 | 88.74 | 85.80 | 70.52 | 61.47 | 51.39 | 71.29 | |||||||||||||
1955 | 47.52 | 44.85 | a | 56.55 | 65.43 | 72.13 | 81.37 | 90.45 | 87.23 | 83.30 | 73.97 | 55.93 | 54.68 | 67.78 | ||||||||||||
1956 | 52.35 | 45.93 | a | 58.84 | 65.40 | 81.16 | 90.40 | 89.03 | 85.97 | 85.63 | 74.13 | 52.10 | 51.94 | 69.41 | ||||||||||||
1957 | 49.70 | a | 59.57 | 53.58 | 58.27 | 67.94 | 82.60 | 88.39 | 87.10 | 80.10 | a | 67.52 | 47.27 | 55.65 | 66.47 | |||||||||||
1958 | 47.39 | 52.86 | 46.19 | 59.37 | 77.45 | 86.00 | a | 87.77 | 88.16 | 82.17 | a | 70.42 | 58.13 | 50.90 | 67.23 | |||||||||||
1959 | 40.19 | 47.46 | 53.52 | 64.30 | 75.06 | 85.47 | 88.26 | 87.35 | 80.40 | 64.87 | 56.90 | a | 48.84 | 66.05 | ||||||||||||
1960 | 39.16 | 33.31 | 53.81 | 67.73 | 73.74 | 85.70 | 87.26 | 90.03 | 80.20 | 66.94 | 59.17 | 43.00 | 65.00 | |||||||||||||
1961 | 48.00 | 47.11 | 54.00 | 63.77 | 75.33 | a | 83.13 | 86.84 | 85.58 | 76.48 | a | 70.48 | 51.23 | 42.81 | 65.40 | |||||||||||
1962 | 40.94 | 54.30 | a | 53.77 | 66.80 | 78.65 | 81.43 | 85.32 | 89.03 | 78.73 | 73.26 | 57.93 | 51.39 | 67.63 | ||||||||||||
1963 | 39.90 | a | 50.82 | 57.55 | 69.93 | 79.77 | a | 86.20 | 91.74 | 84.61 | 82.43 | 74.58 | 60.33 | 46.87 | 68.73 | |||||||||||
1964 | 45.65 | 37.03 | 50.74 | 62.07 | 75.35 | 83.43 | 91.71 | 87.39 | 77.50 | 71.10 | 54.50 | 49.83 | a | 65.53 | ||||||||||||
1965 | 52.29 | 46.61 | 45.84 | 66.90 | 72.94 | 80.60 | 87.84 | 84.32 | 74.60 | 71.68 | 63.67 | 54.06 | 66.78 | |||||||||||||
1966 | 42.03 | 43.96 | 62.10 | 64.43 | 78.19 | 84.20 | 91.26 | 83.81 | 80.69 | a | 69.45 | 61.10 | 47.47 | a | 67.39 | |||||||||||
1967 | 50.87 | 51.50 | 63.77 | 68.37 | 71.19 | 80.67 | 86.68 | 82.73 | a | 76.67 | 71.10 | a | 60.00 | 40.03 | 66.97 | |||||||||||
1968 | 48.53 | a | 51.66 | 56.10 | 61.00 | 70.32 | 86.20 | 85.39 | 81.84 | 78.63 | 71.68 | 51.83 | 47.74 | 65.91 | ||||||||||||
1969 | 54.55 | 51.75 | 45.26 | 66.53 | 73.74 | 77.50 | 88.52 | 88.61 | 79.80 | 59.13 | 55.87 | 47.71 | 65.75 | |||||||||||||
1970 | 45.16 | 56.21 | 49.48 | 61.63 | 75.61 | 83.13 | 88.35 | 89.10 | 78.93 | a | 61.06 | 55.43 | 55.13 | 66.60 | ||||||||||||
1971 | 50.83 | a | 46.93 | 59.77 | 63.31 | a | 71.26 | 86.90 | 86.03 | 84.84 | 74.97 | a | 67.77 | 57.40 | 46.87 | 66.41 | ||||||||||
1972 | 49.55 | 56.24 | 64.87 | a | 67.60 | 73.81 | 86.43 | 86.32 | 84.84 | 79.10 | 67.33 | a | 43.47 | 42.74 | 66.86 | |||||||||||
1973 | 43.26 | 49.46 | 50.90 | 55.70 | 69.77 | 84.13 | 86.40 | a | 87.77 | 77.47 | 71.03 | 61.97 | a | 44.19 | 65.17 | |||||||||||
1974 | 41.90 | 50.96 | 62.67 | a | 65.27 | 80.58 | 84.80 | 89.94 | 84.29 | 74.87 | 69.61 | 55.13 | 43.71 | 66.98 | ||||||||||||
1975 | 45.29 | 47.32 | 54.48 | 64.10 | a | 73.58 | 82.67 | 88.39 | 88.00 | 76.03 | a | 74.06 | 53.10 | 51.48 | 66.54 | |||||||||||
1976 | 45.90 | 57.34 | 56.48 | 66.43 | 72.87 | 84.30 | 89.10 | 86.81 | 75.80 | 62.77 | 54.50 | 45.84 | 66.51 | |||||||||||||
1977 | 46.26 | 51.68 | 55.26 | 65.83 | 76.68 | 86.93 | a | 88.97 | 85.03 | 82.70 | 71.42 | 58.57 | 54.00 | 68.61 | ||||||||||||
1978 | 41.68 | 45.25 | 59.26 | 70.43 | 71.42 | 83.70 | 90.39 | 86.10 | 82.03 | 71.29 | 54.07 | 42.61 | 66.52 | |||||||||||||
1979 | 37.26 | 52.29 | 55.03 | 65.47 | 68.90 | 81.73 | 88.13 | 83.00 | 80.90 | 71.71 | 49.33 | 52.06 | 65.48 | |||||||||||||
1980 | 43.97 | 52.83 | 55.84 | 60.63 | 70.29 | 90.07 | 93.03 | 89.00 | 81.10 | 68.32 | 56.93 | 58.10 | 68.34 | |||||||||||||
1981 | 52.39 | 56.93 | a | 54.65 | 73.23 | 72.45 | 87.30 | 87.61 | 82.06 | 79.87 | 68.68 | 61.13 | 52.68 | 69.08 | ||||||||||||
1982 | 50.13 | 46.86 | 59.19 | 65.63 | 72.48 | 79.70 | 88.65 | 86.26 | 78.67 | 67.48 | 56.10 | 47.81 | 66.58 | |||||||||||||
1983 | 45.48 | 48.93 | 52.77 | 57.80 | 67.35 | 80.67 | 89.61 | 89.42 | 84.27 | 70.84 | 55.63 | 33.23 | 64.67 | |||||||||||||
1984 | 43.13 | 50.97 | 52.42 | 63.87 | 78.45 | 83.87 | 89.68 | 86.87 | 78.50 | 61.45 | 58.40 | 50.39 | 66.50 | |||||||||||||
1985 | 39.16 | 47.14 | 59.48 | 68.70 | 75.84 | 85.40 | 89.84 | 89.97 | 77.33 | 68.16 | 54.83 | a | 47.65 | 66.96 | ||||||||||||
1986 | 58.48 | 53.86 | 65.16 | 69.40 | 74.65 | 82.53 | 88.61 | 86.58 | 79.17 | 65.97 | 55.60 | 44.39 | 68.70 | |||||||||||||
1987 | 46.52 | 50.29 | 54.94 | 67.97 | 72.61 | 84.43 | 90.48 | 83.45 | 79.13 | 72.03 | 55.87 | 45.06 | 66.90 | |||||||||||||
1988 | 40.65 | 51.59 | 55.74 | 66.70 | 73.42 | 86.10 | 88.55 | 87.39 | 79.13 | 73.68 | 57.70 | 49.84 | 67.54 | |||||||||||||
1989 | 51.97 | 43.82 | 67.55 | 70.07 | 77.61 | 80.90 | 90.58 | 86.26 | 78.73 | 70.06 | 62.03 | 43.81 | 68.62 | |||||||||||||
1990 | 48.55 | 47.86 | 57.68 | 67.20 | 73.71 | 92.70 | 85.61 | 85.52 | 81.43 | 71.48 | 59.60 | 43.90 | 67.94 | |||||||||||||
1991 | 45.55 | 57.64 | 58.35 | 66.40 | 78.48 | 85.80 | 86.68 | 86.00 | 77.80 | 70.45 | 48.60 | 45.74 | 67.29 | |||||||||||||
1992 | 48.87 | 53.86 | 60.42 | 72.50 | 74.10 | 82.07 | 86.68 | 85.48 | 82.23 | 72.29 | 45.03 | 42.10 | 67.14 | |||||||||||||
1993 | 46.23 | 47.14 | 57.39 | 64.50 | 74.53 | a | 83.60 | 91.39 | 83.90 | a | 78.10 | 66.13 | 51.77 | 49.90 | 66.21 | |||||||||||
1994 | 49.68 | 51.57 | 59.39 | 63.50 | 74.65 | 90.30 | 90.10 | 88.48 | 81.63 | 68.65 | 55.03 | 52.55 | 68.79 | |||||||||||||
1995 | 48.87 | 57.82 | 59.23 | a | 60.37 | 68.10 | 79.23 | 88.00 | 91.52 | 79.41 | a | 71.19 | 61.67 | 50.16 | 67.96 | |||||||||||
1996 | 47.97 | 55.86 | 56.06 | 67.40 | 82.39 | 86.80 | 89.19 | 85.94 | 78.45 | a | 67.61 | 57.90 | 50.29 | 68.82 | ||||||||||||
1997 | 46.19 | 46.32 | 65.06 | 58.50 | 74.73 | a | 83.97 | 89.61 | 84.68 | 81.47 | 66.23 | 47.53 | 37.42 | 65.14 | ||||||||||||
1998 | 46.77 | 47.07 | 54.94 | 60.80 | 79.23 | 86.55 | a | 88.55 | 85.90 | 85.87 | 68.97 | 59.10 | 47.58 | 67.61 | ||||||||||||
1999 | 50.87 | 59.82 | 62.17 | a | 60.43 | 72.29 | 83.00 | 88.71 | 86.10 | 76.07 | 71.57 | a | 65.93 | 46.42 | 68.61 | |||||||||||
2000 | 51.55 | 59.59 | 56.35 | 69.33 | 80.45 | 83.97 | 90.55 | 91.29 | 84.24 | a | 66.52 | 48.47 | 46.71 | 69.08 | ||||||||||||
2001 | 43.03 | 51.61 | 56.35 | 71.63 | 74.55 | 88.27 | 91.71 | 87.55 | 82.20 | 70.23 | 58.00 | 48.35 | 68.62 | |||||||||||||
2002 | 44.19 | 50.54 | 57.17 | a | 72.27 | 77.84 | 89.40 | 91.06 | 87.45 | 78.50 | 62.06 | 54.87 | 43.39 | 67.39 | ||||||||||||
2003 | 52.53 | a | 42.00 | 56.94 | 68.03 | 78.55 | 79.80 | 95.23 | 88.19 | 76.43 | 73.03 | 56.93 | 49.84 | 68.13 | ||||||||||||
2004 | 47.77 | 46.72 | 64.13 | 59.40 | 78.39 | 82.93 | 84.90 | 84.13 | 81.27 | 68.77 | 50.37 | 49.94 | 66.56 | |||||||||||||
2005 | 50.23 | a | 49.93 | 53.32 | 64.24 | a | 74.00 | 84.10 | 92.32 | 85.90 | 85.30 | 69.74 | 60.67 | 50.42 | 68.35 | |||||||||||
2006 | 52.71 | 53.89 | 59.55 | 72.70 | 79.13 | 88.70 | 89.39 | 83.16 | 74.90 | 66.29 | 59.73 | 44.19 | 68.70 | |||||||||||||
2007 | 33.42 | 45.11 | 64.16 | 63.70 | 72.68 | 82.30 | 88.71 | 91.52 | 82.80 | 73.35 | 62.33 | 44.48 | 67.05 | |||||||||||||
2008 | 46.16 | 52.14 | 56.84 | 65.93 | 75.13 | 87.63 | 91.10 | 84.48 | 78.13 | 69.65 | 59.70 | 49.10 | 68.00 | |||||||||||||
2009 | 54.37 | a | 56.79 | 61.52 | 64.90 | 76.55 | 82.97 | 89.32 | 88.16 | 77.50 | 61.13 | 58.60 | 38.81 | 67.55 | ||||||||||||
2010 | 49.97 | 41.57 | 54.61 | 66.57 | 74.13 | 87.63 | 89.06 | 88.26 | 86.47 | 71.81 | 57.30 | 51.97 | 68.28 | |||||||||||||
2011 | 48.26 | 46.93 | 62.19 | 69.03 | 74.65 | 91.07 | 93.16 | 91.94 | 80.03 | 69.39 | 56.73 | 39.45 | b | 68.57 | ||||||||||||
2012 | 51.81 | 48.97 | 65.35 | 70.50 | 77.23 | 91.50 | 93.29 | 90.26 | 80.77 | 69.74 | 64.30 | 47.61 | 70.94 | |||||||||||||
2013 | 49.52 | 47.89 | 58.65 | 63.10 | 75.13 | 90.30 | 89.45 | 87.90 | 82.00 | 67.65 | 55.13 | 47.77 | 67.87 | |||||||||||||
2014 | 49.81 | 50.86 | 61.00 | a | 65.17 | 74.74 | 88.27 | 88.42 | 85.90 | 83.21 | a | 71.10 | 53.67 | 46.07 | a | 68.18 | ||||||||||
2015 | 45.27 | a | 48.71 | 61.03 | 66.43 | 68.03 | 85.47 | 87.58 | 90.00 | 86.53 | 72.45 | 54.55 | a | 49.10 | 67.93 | |||||||||||
2016 | 47.45 | 57.41 | 60.87 | 63.77 | 71.52 | 89.21 | a | 91.80 | u | 81.70 | k | 83.00 | 76.87 | 62.33 | 48.00 | 66.04 | b | |||||||||
2017 | 42.23 | 58.07 | 66.97 | 64.33 | 71.42 | 86.90 | 90.26 | 83.16 | 78.20 | 69.68 | 64.20 | 54.80 | a | 69.18 | ||||||||||||
2018 | 53.71 | 53.36 | 62.87 | 67.23 | 82.10 | 92.00 | 92.19 | 86.94 | 82.76 | a | 65.16 | 51.97 | 48.00 | 69.86 | ||||||||||||
2019 | 48.61 | 52.79 | 55.81 | 68.20 | 69.65 | 85.13 | 92.55 | 92.52 | 88.43 | 62.03 | 56.30 | 48.35 | 68.36 | |||||||||||||
2020 | 49.94 | 46.52 | 65.35 | 67.23 | 81.26 | 88.87 | 90.48 | 92.68 | 80.20 | 70.94 | 62.43 | 47.97 | 70.32 | |||||||||||||
2021 | 46.45 | 44.93 | a | 56.19 | 66.77 | 72.32 | 85.73 | 90.29 | 88.74 | 85.97 | 71.16 | 64.70 | 58.84 | 69.34 | ||||||||||||
2022 | 51.77 | a | 47.04 | 56.71 | 70.40 | 78.00 | a | 86.07 | a | 91.19 | 85.68 | c | 85.03 | 67.97 | 53.03 | 52.63 | a | 68.79 | ||||||||
2023 | 43.00 | 50.39 | 56.35 | 66.50 | 74.52 | 82.07 | 93.32 | 89.74 | 82.53 | 69.58 | 59.93 | 50.13 | 68.17 | |||||||||||||
2024 | 43.27 | a | 54.24 | 57.03 | 67.78 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.51 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.12 | 50.37 | 57.35 | 65.66 | 74.57 | 85.14 | 89.36 | 86.97 | 80.52 | 69.39 | 56.58 | 48.07 | 67.56 | |||||||||||||
S.D. | 4.84 | 5.25 | 4.94 | 3.87 | 3.50 | 3.47 | 2.26 | 2.52 | 3.21 | 3.63 | 4.84 | 4.64 | 1.40 | |||||||||||||
SKEW | -0.37 | -0.40 | -0.30 | -0.18 | 0.20 | 0.16 | -0.06 | 0.17 | 0.22 | -0.55 | -0.41 | -0.38 | 0.15 | |||||||||||||
MAX | 58.48 | 60.64 | 67.55 | 73.23 | 82.39 | 92.70 | 95.23 | 92.68 | 88.43 | 79.10 | 65.93 | 58.84 | 71.29 | |||||||||||||
MIN | 33.42 | 33.31 | 44.23 | 55.70 | 67.35 | 77.50 | 83.29 | 81.84 | 74.60 | 59.13 | 43.47 | 33.23 | 64.67 | |||||||||||||
YRS | 77 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 76 | 76 | 76 | 76 | 75 |