YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 36.42 | 34.34 | 38.23 | 46.23 | 54.58 | 67.07 | 71.97 | 72.65 | 65.80 | 56.87 | 38.33 | 28.48 | 50.91 | |||||||||||||
1949 | 20.45 | 34.64 | 41.42 | 55.93 | 62.74 | 68.53 | 76.81 | 76.68 | 69.90 | 49.65 | 52.60 | 34.52 | 53.66 | |||||||||||||
1950 | 23.23 | 36.64 | 39.48 | 47.23 | 56.52 | 63.70 | 76.87 | 78.13 | 69.27 | 54.77 | 42.67 | 39.58 | 52.34 | |||||||||||||
1951 | 29.97 | 36.50 | 38.19 | 54.10 | 59.90 | 66.27 | 79.81 | 75.97 | 71.40 | 51.35 | 39.77 | 30.26 | 52.79 | |||||||||||||
1952 | 30.19 | 35.83 | 38.16 | 56.33 | 59.65 | 64.30 | 78.74 | 76.52 | 73.20 | 66.65 | 40.70 | 34.45 | 54.56 | |||||||||||||
1953 | 42.19 | 37.50 | 41.52 | 46.93 | 54.71 | 58.70 | 77.45 | 73.97 | 72.77 | 59.32 | 46.17 | 36.42 | 53.97 | |||||||||||||
1954 | 35.39 | 44.21 | 39.71 | 50.00 | 61.71 | 61.33 | 75.39 | 69.58 | 64.53 | 54.48 | 47.93 | 34.77 | 53.25 | |||||||||||||
1955 | 31.32 | 32.93 | 35.23 | 41.63 | 51.81 | 68.27 | 71.45 | 77.71 | 67.03 | 55.45 | 34.77 | 34.03 | 50.14 | |||||||||||||
1956 | 33.65 | 30.93 | 41.90 | 53.47 | 60.97 | 63.63 | 80.13 | 75.39 | 70.50 | 52.00 | 43.03 | 37.97 | 53.63 | |||||||||||||
1957 | 24.06 | 37.68 | 41.48 | 50.10 | 60.06 | 68.17 | 75.23 | 72.71 | 72.40 | 50.10 | 39.27 | 36.90 | 52.35 | |||||||||||||
1958 | 35.48 | 41.39 | 41.03 | 46.70 | 66.26 | 68.73 | 81.35 | 81.84 | 65.73 | 61.29 | 40.73 | 40.52 | 55.92 | |||||||||||||
1959 | 35.00 | 34.79 | 40.71 | 50.67 | 52.23 | 66.27 | 78.81 | 71.00 | 59.67 | 53.77 | 44.00 | 36.71 | 51.97 | |||||||||||||
1960 | 28.87 | 32.48 | 43.84 | 49.47 | 53.65 | 68.40 | 84.87 | 70.35 | 68.63 | 54.48 | 39.17 | 35.73 | a | 52.50 | ||||||||||||
1961 | 37.68 | 39.14 | 40.71 | 47.37 | 55.35 | 73.60 | 80.55 | 81.81 | 60.80 | 51.94 | 39.53 | 31.84 | 53.36 | |||||||||||||
1962 | 31.13 | 34.68 | 38.71 | 53.50 | 50.77 | 66.10 | 74.74 | 70.74 | 68.70 | 55.10 | 42.37 | 37.23 | 51.98 | |||||||||||||
1963 | 29.52 | 46.18 | 41.81 | 44.60 | 58.87 | 63.87 | 71.06 | 75.35 | 73.47 | 57.03 | 40.67 | 34.39 | 53.07 | |||||||||||||
1964 | 31.35 | 36.28 | 37.10 | 43.43 | 55.16 | 62.53 | 74.81 | 69.71 | 63.10 | 59.16 | 38.17 | 31.87 | 50.22 | |||||||||||||
1965 | 34.71 | 38.25 | 40.00 | 50.47 | 55.61 | 64.90 | 75.84 | 71.87 | 59.77 | 62.19 | 44.03 | 33.16 | 52.57 | |||||||||||||
1966 | 34.10 | 34.96 | 42.55 | 50.37 | 61.29 | 62.33 | 71.45 | 74.19 | 68.20 | 53.84 | 40.93 | 32.90 | 52.26 | |||||||||||||
1967 | 34.58 | 38.86 | 37.45 | 40.13 | 56.48 | 68.17 | 78.71 | 83.97 | 73.23 | 55.45 | 41.67 | 31.03 | 53.31 | |||||||||||||
1968 | 31.97 | 41.45 | 47.23 | 46.30 | 56.13 | 65.50 | 79.71 | 69.00 | 65.03 | 51.32 | 37.87 | 29.55 | 51.75 | |||||||||||||
1969 | 28.58 | 32.00 | 42.06 | 49.57 | 61.26 | 67.70 | 74.23 | 74.03 | 66.87 | 48.55 | 45.83 | 35.16 | 52.15 | |||||||||||||
1970 | 33.65 | 41.89 | 38.52 | 40.63 | 57.19 | 69.57 | 78.97 | 78.77 | 59.53 | 50.68 | 39.50 | 30.71 | 51.63 | |||||||||||||
1971 | 35.94 | 37.07 | 36.55 | 46.93 | 58.19 | 59.87 | 77.71 | 81.68 | 59.47 | 49.71 | 38.03 | 29.03 | 50.85 | |||||||||||||
1972 | 30.74 | 37.21 | 46.13 | 44.37 | 60.03 | 66.53 | 75.13 | 77.23 | 60.83 | 52.81 | 40.37 | 26.84 | 51.52 | |||||||||||||
1973 | 29.16 | 38.71 | 40.65 | 48.37 | 61.71 | 67.40 | 78.74 | 74.48 | 64.70 | 53.35 | 34.47 | 33.68 | 52.12 | |||||||||||||
1974 | 28.55 | 37.11 | 40.23 | 46.30 | 51.52 | 71.03 | 73.94 | 75.26 | 71.33 | 58.03 | 41.30 | 33.81 | 52.37 | |||||||||||||
1975 | 32.26 | 34.39 | 36.06 | 40.03 | 55.42 | 61.03 | 77.19 | 69.45 | 70.43 | 49.68 | 38.47 | 37.19 | 50.13 | |||||||||||||
1976 | 32.25 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | 53.04 | f | 65.70 | 81.55 | 81.42 | 74.17 | a | 55.55 | 41.67 | 31.97 | 61.72 | e | ||||||
1999 | 36.50 | a | 35.50 | b | 41.10 | 47.23 | 57.10 | 65.53 | 75.71 | 78.29 | 69.73 | 60.39 | 50.57 | 36.13 | 54.48 | |||||||||||
2000 | 36.94 | 41.31 | 43.89 | c | 57.47 | 59.03 | 69.37 | 76.55 | 77.55 | 65.90 | 54.94 | 36.77 | 34.71 | 54.53 | ||||||||||||
2001 | 35.42 | 37.64 | 47.16 | 50.14 | a | 65.26 | 64.30 | 75.58 | 81.26 | 74.60 | 56.10 | 46.00 | 34.97 | 55.70 | ||||||||||||
2002 | 34.94 | 38.89 | 40.39 | 53.10 | 59.03 | 69.79 | a | 80.48 | 73.61 | 67.37 | 53.87 | 48.85 | c | 38.13 | 54.87 | |||||||||||
2003 | 41.23 | 37.75 | 46.84 | 50.23 | 59.00 | 71.87 | 83.35 | 80.10 | 71.93 | 60.65 | 39.17 | 36.65 | 56.56 | |||||||||||||
2004 | 35.26 | 38.21 | 50.10 | 57.17 | 57.48 | 68.57 | 79.84 | 78.03 | 64.63 | 55.97 | 43.50 | 39.81 | 55.71 | |||||||||||||
2005 | 38.23 | 43.82 | 49.16 | 52.73 | 61.42 | 65.93 | 80.06 | 79.94 | 67.43 | 58.10 | 42.97 | 34.13 | 56.16 | |||||||||||||
2006 | 37.94 | 37.57 | 42.03 | 53.07 | 63.29 | 69.90 | 82.61 | 77.97 | 71.67 | 55.42 | 42.83 | 37.13 | 55.95 | |||||||||||||
2007 | 35.35 | 41.75 | 50.32 | 53.07 | 63.06 | 68.80 | 83.29 | 76.81 | 67.83 | 55.26 | 43.27 | 32.77 | 55.97 | |||||||||||||
2008 | 32.45 | 40.55 | 40.35 | 46.30 | 60.71 | 66.93 | 78.39 | 76.90 | 72.17 | 58.45 | 48.10 | 32.13 | 54.45 | |||||||||||||
2009 | 38.06 | 40.25 | 39.68 | 49.37 | 62.65 | 68.77 | 81.55 | 78.39 | 74.63 | 50.29 | 43.03 | 29.94 | 54.72 | |||||||||||||
2010 | 38.39 | 41.14 | 45.87 | 50.70 | 54.19 | 64.13 | 77.81 | 75.97 | 68.00 | 57.52 | 39.87 | 35.71 | 54.11 | |||||||||||||
2011 | 35.94 | 35.43 | 41.77 | 44.20 | 54.97 | 63.63 | 73.77 | 78.87 | 77.13 | 55.58 | 39.73 | 37.13 | 53.18 | |||||||||||||
2012 | 38.81 | 38.83 | 44.19 | 54.93 | 59.87 | 65.00 | 78.13 | 81.55 | 74.77 | 56.48 | 44.97 | 34.52 | 56.00 | |||||||||||||
2013 | 32.41 | b | 39.42 | d | 47.61 | 51.33 | 63.03 | 69.03 | 82.71 | 80.61 | 68.70 | 54.26 | 44.90 | 34.87 | 55.74 | |||||||||||
2014 | 42.26 | 35.86 | 47.77 | 54.27 | 63.84 | 68.03 | 84.52 | 79.71 | 72.70 | 63.03 | 42.07 | 38.48 | 57.71 | |||||||||||||
2015 | 41.29 | 47.64 | 54.94 | 54.30 | 64.39 | 78.63 | 81.39 | 81.32 | 69.00 | 64.84 | 38.77 | 35.03 | 59.29 | |||||||||||||
2016 | 36.90 | 45.86 | 47.48 | 61.60 | 62.94 | 71.60 | 76.39 | 79.74 | 66.77 | 54.58 | 49.73 | 29.16 | 56.90 | |||||||||||||
2017 | 28.55 | 38.96 | 46.71 | 51.17 | 63.52 | 70.60 | 83.42 | 84.00 | 71.07 | 55.52 | 43.77 | 33.55 | 55.90 | |||||||||||||
2018 | 40.13 | 36.57 | 45.42 | 53.60 | 66.26 | 69.20 | 83.20 | a | 79.65 | 68.00 | 57.68 | 44.33 | 34.87 | 56.58 | ||||||||||||
2019 | 39.23 | 30.21 | 43.00 | 52.37 | 63.45 | 70.33 | 77.39 | 80.16 | 66.07 | 51.32 | 46.43 | 37.81 | 54.81 | |||||||||||||
2020 | 37.90 | 40.86 | 44.03 | 55.20 | 63.23 | 68.27 | 79.87 | 80.29 | 77.20 | 59.77 | 43.97 | 38.58 | 57.43 | |||||||||||||
2021 | 38.52 | 34.36 | 47.64 | i | 57.27 | 62.45 | 77.67 | 85.71 | 78.55 | 71.07 | 56.06 | 46.53 | 34.71 | 58.44 | a | |||||||||||
2022 | 36.74 | 39.00 | 46.48 | 46.03 | 55.20 | a | 68.00 | 82.61 | 85.06 | 74.27 | 64.26 | 36.60 | 31.94 | 55.52 | ||||||||||||
2023 | 35.23 | 36.43 | 38.19 | 49.00 | 66.97 | 70.80 | 82.55 | 79.39 | 68.83 | 57.81 | 44.33 | 39.97 | 55.79 | |||||||||||||
2024 | 34.52 | 40.17 | 43.06 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.34 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.25 | 38.00 | 42.52 | 49.94 | 59.28 | 67.29 | 78.52 | 77.13 | 68.74 | 55.79 | 42.32 | 34.51 | 53.95 | |||||||||||||
S.D. | 4.63 | 3.69 | 4.17 | 4.76 | 4.13 | 3.79 | 3.65 | 4.05 | 4.52 | 4.10 | 3.91 | 3.16 | 2.13 | |||||||||||||
SKEW | -0.70 | 0.38 | 0.63 | -0.08 | -0.19 | 0.42 | -0.12 | -0.33 | -0.37 | 0.51 | 0.38 | -0.27 | 0.16 | |||||||||||||
MAX | 42.26 | 47.64 | 54.94 | 61.60 | 66.97 | 78.63 | 85.71 | 85.06 | 77.20 | 66.65 | 52.60 | 40.52 | 59.29 | |||||||||||||
MIN | 20.45 | 30.21 | 35.23 | 40.03 | 50.77 | 58.70 | 71.06 | 69.00 | 59.47 | 48.55 | 34.47 | 26.84 | 50.13 | |||||||||||||
YRS | 54 | 54 | 52 | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 52 |