YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.13 | a | 46.87 | 40.26 | 48.75 | i | ||
1977 | 32.53 | a | 45.57 | 39.81 | 60.00 | 56.16 | 73.87 | 77.74 | 80.29 | 63.67 | 55.66 | b | 40.00 | 36.13 | a | 55.12 | ||||||||||
1978 | 37.32 | 40.21 | 51.57 | a | 52.43 | 56.58 | 70.07 | 76.16 | 74.39 | 65.59 | a | 61.61 | 37.70 | 28.26 | 54.32 | |||||||||||
1979 | 24.13 | 36.32 | 47.61 | 50.83 | 63.19 | 72.03 | 80.90 | 80.00 | 75.33 | 59.48 | 39.77 | 40.57 | a | 55.85 | ||||||||||||
1980 | 31.20 | a | 40.17 | 42.19 | 58.27 | 59.41 | b | 64.33 | 76.35 | 73.84 | 70.63 | 60.00 | 43.73 | 41.87 | 55.17 | |||||||||||
1981 | 40.71 | 41.18 | 49.90 | 53.90 | a | 57.97 | 65.10 | 76.42 | 83.94 | 72.37 | 53.90 | a | 46.10 | 35.94 | 56.45 | |||||||||||
1982 | 31.87 | 34.79 | 43.42 | 48.59 | a | 59.85 | d | 69.76 | a | 75.07 | a | 78.87 | 68.00 | 54.42 | 38.30 | 33.79 | b | 53.06 | ||||||||
1983 | 40.26 | 43.46 | 48.35 | 51.97 | 62.79 | b | 67.47 | 73.00 | 81.68 | 65.30 | 58.13 | 42.73 | 26.00 | 55.10 | ||||||||||||
1984 | 34.19 | 40.21 | 45.32 | 49.90 | 58.74 | 65.90 | 80.17 | a | 80.29 | 66.53 | 50.65 | 41.47 | 30.61 | 53.67 | ||||||||||||
1985 | 30.35 | 32.96 | 42.81 | 57.40 | 64.10 | 71.10 | 85.55 | 73.52 | 60.20 | 53.45 | 28.97 | 33.48 | 52.82 | |||||||||||||
1986 | 41.10 | 39.79 | 51.19 | 52.47 | 62.87 | 76.14 | a | 73.58 | 83.39 | 60.30 | 59.60 | a | 40.53 | 36.26 | 56.43 | |||||||||||
1987 | 33.65 | 41.85 | a | 46.84 | 62.83 | 64.84 | 73.80 | 74.68 | 77.32 | 76.03 | 65.32 | 44.66 | a | 34.94 | 58.06 | |||||||||||
1988 | 32.84 | 43.17 | 45.71 | 58.10 | 60.53 | a | 69.47 | 78.39 | 80.27 | a | 71.20 | 66.90 | 40.20 | 35.47 | a | 56.85 | ||||||||||
1989 | 33.81 | 30.26 | a | 43.35 | 57.43 | 60.00 | 71.33 | 79.26 | 73.19 | 71.33 | 55.81 | 45.13 | 39.40 | a | 55.03 | |||||||||||
1990 | 37.42 | 37.32 | 48.97 | a | 57.47 | 58.81 | 67.31 | a | 80.19 | 78.10 | 79.10 | 54.29 | 43.87 | 26.84 | 55.81 | |||||||||||
1991 | 32.84 | 47.54 | 43.68 | 51.69 | a | 56.87 | 63.40 | 78.00 | 83.19 | 74.17 | a | 59.06 | 36.44 | n | 38.23 | 57.15 | a | |||||||||
1992 | 38.13 | 48.03 | 54.71 | 57.30 | 69.10 | a | 75.07 | b | 75.33 | a | 81.03 | 70.72 | a | 61.07 | a | 38.60 | 32.37 | a | 58.46 | |||||||
1993 | 31.52 | b | 35.19 | a | 47.93 | a | 51.87 | 68.30 | a | 67.87 | 66.29 | 73.97 | 70.90 | a | 59.94 | 39.62 | a | 37.52 | 54.24 | |||||||
1994 | 40.55 | 38.79 | 51.29 | 55.67 | c | 64.36 | c | 70.04 | c | 82.60 | a | 83.10 | b | 75.28 | a | 55.81 | 35.67 | 35.86 | b | 57.42 | ||||||
1995 | 37.58 | 45.22 | a | 46.00 | 51.50 | b | 61.94 | 66.03 | a | 76.44 | d | 75.52 | b | 72.07 | a | 51.71 | 47.28 | a | 36.19 | 55.62 | ||||||
1996 | 35.00 | 39.31 | 47.10 | 54.38 | a | 56.23 | a | 70.83 | a | 82.56 | d | 80.34 | b | 65.93 | 55.61 | 43.76 | a | 35.94 | 55.58 | |||||||
1997 | 35.07 | b | 37.74 | a | 46.28 | b | 50.00 | e | 66.25 | c | 66.72 | e | 75.03 | b | 81.12 | f | 72.83 | f | 54.40 | a | 46.27 | 36.47 | a | 51.42 | b | |
1998 | 38.55 | 42.75 | 47.33 | a | 53.21 | b | 61.69 | b | 66.90 | a | 82.53 | a | 83.28 | b | 75.93 | b | 54.97 | b | 42.24 | a | 33.23 | a | 56.88 | |||
1999 | 37.63 | a | 38.59 | a | 46.30 | a | 51.52 | c | 58.07 | c | 65.55 | a | 77.62 | b | 81.17 | b | 70.93 | a | 60.26 | 51.07 | 35.37 | a | 56.17 | |||
2000 | 35.23 | a | 41.41 | b | 46.89 | c | 58.54 | d | 60.53 | a | 70.27 | 79.16 | 80.55 | b | 66.61 | b | 55.97 | a | 36.27 | 34.79 | b | 55.52 | ||||
2001 | 35.61 | 37.00 | 47.93 | a | 49.97 | a | 66.38 | b | 67.32 | h | 76.93 | c | 83.58 | 77.03 | a | 57.10 | a | 47.10 | 34.77 | 55.76 | a | |||||
2002 | 34.60 | a | 38.59 | a | 40.70 | a | 53.10 | a | 60.04 | c | 70.96 | c | 82.60 | a | 76.55 | 72.35 | d | 54.45 | 46.80 | 38.97 | 55.81 | |||||
2003 | 41.65 | 36.62 | b | 46.50 | a | 51.38 | d | 61.07 | c | 71.79 | b | 85.54 | c | 83.69 | b | 73.89 | c | 63.24 | b | 37.83 | 36.41 | b | 57.47 | |||
2004 | 36.00 | a | 38.83 | 53.07 | a | 57.89 | b | 60.15 | e | 70.21 | a | 81.17 | b | 78.72 | b | 66.21 | a | 56.43 | a | 42.76 | a | 40.00 | 56.79 | |||
2005 | 39.10 | 44.37 | a | 49.93 | a | 54.12 | e | 62.59 | d | 65.54 | d | 81.68 | c | 82.07 | c | 69.29 | b | 57.93 | b | 41.80 | 35.96 | c | 57.03 | |||
2006 | 40.26 | 38.19 | b | 43.90 | 54.08 | e | 66.03 | 71.26 | c | 85.45 | b | 80.24 | b | 72.21 | b | 55.80 | a | 43.37 | 37.33 | a | 57.34 | |||||
2007 | 31.94 | 41.39 | 51.87 | a | 54.24 | e | 64.48 | b | 70.31 | a | 87.23 | 80.23 | 69.76 | a | 56.30 | a | 44.10 | 33.32 | 57.10 | |||||||
2008 | 32.97 | 39.48 | 42.32 | 49.17 | 61.84 | 68.41 | a | 80.97 | 80.19 | 71.67 | 58.00 | 47.53 | 31.52 | 55.34 | ||||||||||||
2009 | 36.94 | 41.50 | 41.16 | 53.33 | ----- | z | 69.93 | a | 82.13 | 79.47 | a | 77.21 | a | 51.55 | 44.73 | 30.32 | 55.30 | a | ||||||||
2010 | 39.52 | 41.86 | 50.20 | a | ----- | z | 58.50 | e | 65.42 | d | 78.47 | a | 78.06 | ----- | z | ----- | z | ----- | z | 37.10 | 56.14 | d | ||||
2011 | 36.41 | d | 35.27 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.84 | j |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | 33.87 | a | 38.93 | 48.45 | 52.70 | 63.52 | 70.63 | 84.58 | 83.42 | 70.87 | 55.50 | a | 43.80 | ----- | z | 58.75 | a | |||||||||
2014 | 40.03 | 34.68 | 48.06 | 54.87 | 64.65 | 67.57 | ----- | z | 81.16 | 73.53 | 61.00 | l | 41.73 | 38.52 | 54.48 | b | ||||||||||
2015 | 40.39 | 46.75 | 55.97 | 56.40 | 66.06 | 79.17 | 82.42 | 84.00 | 70.57 | 64.94 | 41.50 | 34.65 | 60.23 | |||||||||||||
2016 | 37.45 | 46.48 | 47.97 | 61.83 | 64.42 | 72.23 | 76.58 | 81.03 | 68.50 | 56.32 | 50.70 | 28.87 | 57.70 | |||||||||||||
2017 | 30.65 | 39.07 | 47.52 | ----- | z | 65.00 | 72.13 | 85.87 | 85.39 | 71.93 | 55.65 | 44.90 | 34.74 | 57.53 | a | |||||||||||
2018 | 41.03 | 36.18 | 46.16 | 54.03 | 66.94 | 69.13 | 82.45 | 81.61 | 69.50 | 56.39 | 43.60 | 35.39 | 56.87 | |||||||||||||
2019 | 39.06 | 31.50 | 43.10 | 53.17 | 64.68 | 70.90 | 78.68 | 82.23 | 68.70 | 51.13 | a | 45.63 | 37.87 | 55.55 | ||||||||||||
2020 | 38.58 | 39.69 | 46.13 | 55.90 | 63.23 | 68.47 | 79.00 | 82.52 | 76.00 | 58.26 | 43.70 | 38.77 | 57.52 | |||||||||||||
2021 | 38.29 | 33.96 | a | 47.94 | 57.87 | ----- | z | 79.27 | 88.55 | ----- | z | 73.80 | 58.10 | 48.03 | 34.97 | 56.08 | b | |||||||||
2022 | 37.61 | 39.00 | 48.58 | 48.73 | 56.42 | 68.23 | 82.52 | 87.06 | 75.83 | 62.77 | 36.47 | 33.68 | 56.41 | |||||||||||||
2023 | 35.52 | 37.89 | 41.39 | 53.23 | 68.90 | 71.37 | 83.94 | 81.71 | 70.00 | 59.32 | 45.97 | 41.81 | 57.59 | |||||||||||||
2024 | 36.71 | 41.72 | 47.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.12 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.12 | 39.59 | 46.99 | 54.26 | 62.19 | 69.85 | 79.77 | 80.33 | 70.86 | 57.42 | 42.79 | 35.35 | 56.18 | |||||||||||||
S.D. | 3.64 | 4.06 | 3.62 | 3.45 | 3.58 | 3.53 | 4.36 | 3.31 | 4.31 | 3.72 | 4.25 | 3.64 | 1.52 | |||||||||||||
SKEW | -0.74 | 0.04 | 0.18 | 0.46 | 0.02 | 0.64 | -0.41 | -0.59 | -0.49 | 0.51 | -0.70 | -0.60 | -0.01 | |||||||||||||
MAX | 41.65 | 48.03 | 55.97 | 62.83 | 69.10 | 79.27 | 88.55 | 87.06 | 79.10 | 66.90 | 51.07 | 41.87 | 60.23 | |||||||||||||
MIN | 24.13 | 30.26 | 39.81 | 48.59 | 56.16 | 63.40 | 66.29 | 73.19 | 60.20 | 50.65 | 28.97 | 26.00 | 52.82 | |||||||||||||
YRS | 47 | 47 | 46 | 43 | 43 | 44 | 44 | 43 | 43 | 44 | 44 | 45 | 36 |