YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | 63.64 | b | 54.60 | a | 31.90 | 22.34 | b | 49.10 | g | ||
1952 | 22.77 | a | 31.34 | 34.35 | 59.47 | 67.26 | 75.07 | 78.52 | 75.03 | 70.00 | a | 53.23 | 42.00 | 29.19 | 53.19 | |||||||||||
1953 | 23.74 | 25.14 | 36.50 | a | ----- | z | 68.74 | 76.30 | 78.87 | 79.00 | 70.50 | 67.32 | 45.77 | 28.00 | 54.54 | a | ||||||||||
1954 | 18.32 | 36.57 | 34.13 | 53.27 | 58.68 | 76.73 | 79.35 | 75.52 | 65.07 | a | 54.07 | a | 41.50 | 28.16 | 51.78 | |||||||||||
1955 | 22.10 | 23.56 | a | 34.39 | 63.38 | a | 71.32 | 73.63 | 84.55 | ----- | z | 70.60 | j | 57.87 | a | 32.20 | 19.61 | 48.26 | b | |||||||
1956 | 24.74 | 25.93 | 34.13 | 49.73 | 67.16 | 79.00 | 74.26 | 75.81 | 66.80 | 65.13 | 38.83 | a | 28.26 | 52.48 | ||||||||||||
1957 | 15.26 | 26.57 | 37.42 | 55.83 | 66.74 | 74.73 | 81.39 | 76.65 | 66.67 | 55.94 | 37.57 | 28.84 | 51.97 | |||||||||||||
1958 | 25.39 | 22.86 | 39.10 | a | 55.80 | 69.58 | 70.43 | 76.52 | 77.27 | a | 69.33 | 58.97 | 41.83 | 19.81 | 52.24 | |||||||||||
1959 | 16.42 | 24.18 | 39.71 | 54.13 | 70.26 | 76.17 | a | 80.06 | 80.00 | 69.52 | a | 50.97 | 30.83 | 33.45 | 52.14 | |||||||||||
1960 | 22.94 | 27.41 | 32.26 | 54.60 | 64.87 | a | 73.00 | a | 79.52 | 79.06 | 69.87 | 59.52 | b | 42.37 | 25.50 | a | 52.58 | |||||||||
1961 | 22.23 | 34.64 | 41.97 | 49.80 | 65.77 | 78.37 | 81.63 | a | 83.80 | a | 70.64 | e | 60.55 | b | 40.17 | 24.90 | b | 54.54 | ||||||||
1962 | 16.87 | h | 23.36 | c | 38.48 | d | 51.85 | d | 68.19 | 73.56 | c | 79.03 | a | 79.07 | b | 67.77 | d | 58.82 | i | ----- | z | 26.07 | b | 56.38 | c | |
1963 | 11.58 | 24.61 | j | 42.59 | b | 58.47 | 63.45 | i | 79.00 | g | 83.77 | 77.82 | c | 70.72 | a | 68.87 | a | ----- | z | 19.46 | c | 54.16 | d | |||
1964 | 28.73 | e | 31.45 | 35.97 | a | 59.46 | f | 73.42 | e | 76.24 | e | ----- | z | 76.65 | ----- | z | 60.64 | i | 43.86 | a | 21.31 | e | 48.45 | d | ||
1965 | 19.43 | a | 23.88 | d | 30.00 | d | 49.00 | e | 71.52 | ----- | z | ----- | z | ----- | z | 61.17 | a | ----- | z | ----- | z | ----- | z | 42.50 | f | |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 65.89 | c | 78.83 | 82.71 | 74.61 | c | 70.10 | 57.48 | 37.73 | 25.90 | a | 61.66 | d | |||||
1967 | 24.94 | 21.46 | 38.67 | d | 53.80 | 63.35 | 75.76 | i | ----- | z | 74.16 | 69.20 | 55.43 | a | 35.39 | b | 27.10 | 46.35 | b | |||||||
1968 | 20.60 | a | ----- | z | 48.06 | ----- | z | 62.97 | ----- | z | ----- | z | ----- | z | 66.43 | ----- | z | 37.75 | b | 23.55 | 43.23 | f | ||||
1969 | 18.06 | 31.68 | 36.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.73 | i | |||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.81 | 77.48 | 66.83 | 56.48 | 35.73 | 24.16 | 57.08 | f | ||||||
1971 | ----- | z | ----- | z | 34.52 | 55.10 | 64.13 | 78.00 | 74.84 | 74.39 | 67.97 | 60.23 | 38.37 | 25.81 | 57.33 | b | ||||||||||
1972 | 15.06 | 21.83 | 34.19 | 49.13 | 71.32 | 73.60 | 74.97 | 73.90 | a | 64.30 | 50.61 | 34.97 | 18.68 | 48.55 | ||||||||||||
1973 | 25.77 | 27.93 | 45.29 | 51.63 | 61.39 | 75.00 | a | 77.67 | a | 77.87 | 64.27 | 61.77 | 38.43 | 24.97 | a | 52.67 | ||||||||||
1974 | 20.03 | 28.04 | a | 35.68 | 55.07 | 62.73 | a | 72.07 | 80.52 | 73.55 | 62.21 | a | 58.57 | a | 41.79 | a | ----- | z | 53.66 | a | ||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.00 | h | 78.68 | 66.23 | 62.30 | a | 46.45 | a | 26.42 | 56.02 | g | |||
1976 | 20.60 | a | 34.46 | c | 36.81 | 57.10 | a | 67.03 | 79.87 | 84.93 | a | 82.42 | 73.33 | 53.63 | a | 35.07 | 17.74 | 53.58 | ||||||||
1977 | 8.82 | c | 33.18 | f | 44.40 | a | 62.62 | a | 77.90 | 75.97 | 83.10 | 74.42 | 67.47 | 59.00 | 40.26 | c | 25.40 | a | 56.30 | a | ||||||
1978 | 16.11 | l | ----- | z | 40.03 | 47.77 | d | 73.39 | 76.27 | 78.32 | 80.06 | 73.40 | 56.23 | e | 34.33 | f | 21.97 | 60.83 | c | |||||||
1979 | 10.97 | b | 16.61 | 32.36 | c | 44.00 | 58.88 | e | 74.10 | a | 81.13 | 76.52 | 70.74 | c | 54.20 | a | 39.87 | 32.69 | b | 49.34 | ||||||
1980 | 22.75 | k | 21.45 | 32.62 | g | ----- | z | 74.71 | c | 75.43 | 82.37 | a | 78.00 | b | 66.10 | 49.66 | b | 43.76 | a | 26.55 | k | 61.43 | d | |||
1981 | 29.30 | a | 30.52 | e | 41.68 | f | 53.55 | h | 65.16 | f | 75.83 | 81.48 | 79.23 | 69.37 | 50.96 | e | 44.74 | c | 26.06 | 54.17 | c | |||||
1982 | 10.93 | d | 24.11 | 36.75 | c | 47.28 | a | 74.34 | b | 68.52 | a | 85.00 | a | 75.87 | a | 66.43 | 57.35 | 36.21 | b | 33.10 | b | 51.32 | ||||
1983 | 25.21 | b | 32.89 | a | 37.00 | 44.43 | 62.10 | 74.28 | a | 88.16 | 87.35 | 69.17 | 54.55 | 38.56 | c | 15.43 | c | 52.43 | ||||||||
1984 | 16.11 | c | 31.21 | a | 31.24 | f | 49.27 | 60.68 | 77.77 | 81.65 | 84.32 | 66.28 | a | 57.67 | a | 36.11 | b | 26.74 | d | 53.44 | a | |||||
1985 | 19.69 | b | 21.56 | a | 39.94 | 57.27 | 70.06 | 70.43 | 81.81 | 74.10 | b | 67.53 | 56.26 | 32.97 | a | 19.25 | c | 50.91 | ||||||||
1986 | 28.74 | 22.04 | 41.62 | b | 58.83 | 69.16 | 76.60 | 84.29 | 73.97 | a | 67.86 | b | 59.42 | 33.63 | 28.19 | 53.70 | ||||||||||
1987 | 28.43 | a | 36.37 | a | 47.10 | b | 67.30 | 75.65 | 83.62 | a | 85.58 | 79.80 | a | 72.90 | 52.23 | 46.87 | 31.00 | 58.90 | ||||||||
1988 | 23.07 | a | 18.40 | d | 39.65 | 51.23 | 74.67 | a | 88.13 | 90.74 | 85.03 | 68.70 | 55.26 | 40.33 | 26.61 | 55.15 | ||||||||||
1989 | 26.60 | a | 20.89 | i | 34.58 | 52.47 | 66.65 | 72.10 | 85.32 | 79.43 | a | 69.63 | 61.71 | c | 35.07 | 17.24 | b | 54.62 | a | |||||||
1990 | 36.19 | 35.43 | 44.71 | 55.77 | 65.57 | a | 78.40 | 79.26 | 81.61 | 72.10 | 54.81 | 47.60 | 29.83 | a | 56.77 | |||||||||||
1991 | 15.70 | a | 32.29 | 42.32 | 50.37 | 72.16 | 82.03 | 80.45 | 82.23 | 66.57 | 56.42 | 31.21 | a | 30.13 | a | 53.49 | ||||||||||
1992 | 28.23 | a | 28.04 | a | 39.77 | 50.32 | b | 67.71 | 73.45 | a | 72.86 | b | 73.58 | 66.97 | a | 57.43 | a | 35.67 | 26.94 | 51.75 | ||||||
1993 | 25.82 | c | 25.04 | 40.23 | 45.41 | a | 63.58 | 63.93 | a | 79.29 | 81.77 | a | 63.62 | a | 55.39 | 37.53 | 30.10 | b | 50.98 | |||||||
1994 | 7.12 | e | 19.96 | d | 42.57 | c | 50.83 | f | 68.52 | b | 78.50 | b | 79.03 | 76.70 | a | 69.55 | a | 58.26 | 41.93 | a | 33.33 | a | 52.32 | a | ||
1995 | 24.07 | c | 23.83 | d | 38.53 | a | 43.96 | b | 65.79 | b | 84.00 | b | 84.87 | 84.03 | 67.75 | b | 52.79 | b | 31.00 | b | 21.47 | a | 51.84 | |||
1996 | 17.38 | b | 27.08 | e | 33.27 | a | 44.12 | e | 64.14 | c | 73.52 | c | 75.85 | d | 80.67 | a | 68.10 | a | 56.43 | a | 31.04 | b | 20.14 | b | 49.31 | |
1997 | 13.26 | 24.00 | 32.37 | a | 47.00 | 55.60 | a | 76.33 | 77.67 | a | 70.45 | b | 66.17 | 53.94 | 34.83 | 30.87 | 48.54 | |||||||||
1998 | 25.63 | a | 36.61 | 32.10 | 60.63 | 77.87 | 73.93 | 81.81 | 81.59 | b | 77.23 | 58.42 | 42.83 | a | 34.83 | a | 56.96 | |||||||||
1999 | 20.70 | a | 35.00 | 42.32 | 59.78 | c | 70.83 | a | 75.97 | 82.74 | 75.59 | b | 68.83 | a | 57.84 | 50.93 | a | 31.14 | c | 55.97 | ||||||
2000 | 23.90 | 33.93 | 48.03 | 53.50 | 67.47 | a | 70.52 | a | 76.58 | 76.10 | 67.79 | a | 61.68 | 37.37 | 15.53 | a | 52.70 | |||||||||
2001 | 27.90 | b | 22.52 | a | 36.90 | a | 55.21 | a | 69.97 | 76.57 | 80.73 | a | 78.90 | 66.87 | 56.68 | 54.13 | 35.55 | 55.16 | ||||||||
2002 | ----- | z | 34.14 | 32.13 | 52.53 | 62.16 | 76.45 | a | 82.13 | 76.58 | 70.40 | 47.06 | 36.50 | 29.58 | 54.52 | a | ||||||||||
2003 | 20.58 | 22.64 | 38.13 | 54.87 | 66.42 | 74.17 | 77.97 | 80.13 | 69.87 | 56.42 | 38.07 | 29.45 | 52.39 | |||||||||||||
2004 | 16.23 | a | 30.07 | 40.45 | 57.30 | 63.55 | 72.60 | 76.90 | 70.58 | 73.40 | 57.26 | 42.14 | a | 25.48 | 52.16 | |||||||||||
2005 | 19.87 | 31.29 | 37.19 | 59.83 | 61.42 | 78.90 | 81.06 | 78.32 | 75.03 | 59.23 | 42.33 | 24.16 | 54.05 | |||||||||||||
2006 | 32.29 | 25.46 | 39.48 | 62.30 | 68.37 | a | 76.47 | 84.77 | a | 76.26 | 64.03 | 51.90 | 41.72 | a | 31.84 | 54.57 | ||||||||||
2007 | 24.42 | 19.14 | 44.39 | 55.00 | 71.68 | 79.07 | 79.48 | 77.42 | 69.37 | 58.74 | ----- | z | 22.10 | 54.62 | a | |||||||||||
2008 | 20.97 | 22.39 | a | 34.94 | 52.03 | 64.23 | 73.30 | 77.83 | a | 75.90 | a | 68.79 | a | 55.58 | 38.63 | 20.65 | 50.44 | |||||||||
2009 | 14.52 | 28.14 | 40.26 | 51.33 | 66.90 | a | 72.31 | a | 71.53 | a | 71.93 | a | 70.80 | 47.35 | 44.07 | 19.94 | 49.92 | |||||||||
2010 | 20.71 | 27.39 | 50.10 | a | 61.80 | 67.43 | a | 71.38 | a | 76.92 | r | 78.36 | c | 64.27 | 59.03 | 40.90 | a | 22.17 | a | 51.23 | a | |||||
2011 | 16.81 | 27.21 | 36.52 | 51.70 | 64.32 | 74.27 | 81.61 | c | 75.58 | 66.60 | 59.23 | 40.48 | a | 29.83 | a | 52.01 | ||||||||||
2012 | 28.32 | 27.28 | 53.81 | 54.31 | d | 65.92 | e | 77.23 | 83.23 | 76.29 | 68.50 | 52.23 | a | 40.83 | 28.65 | 54.72 | ||||||||||
2013 | 23.42 | 24.59 | a | 32.74 | 44.23 | 65.55 | 72.73 | 78.10 | 76.90 | 70.33 | c | 53.39 | 36.40 | 15.77 | 49.51 | |||||||||||
2014 | 13.45 | 17.07 | a | 31.26 | 47.43 | 67.42 | 75.97 | a | 74.90 | 74.23 | 67.00 | 53.97 | 29.37 | 26.52 | 48.22 | |||||||||||
2015 | 21.48 | 16.18 | 41.61 | 57.97 | 67.16 | 72.80 | 77.39 | 73.39 | 72.43 | 56.87 | 45.43 | 33.26 | 53.00 | |||||||||||||
2016 | 21.19 | 28.59 | 45.16 | 53.37 | 68.48 | 74.80 | 77.81 | 75.16 | 68.17 | 58.35 | 48.33 | 23.16 | 53.55 | |||||||||||||
2017 | 24.29 | 35.43 | 38.71 | 56.30 | 63.71 | 74.33 | 77.52 | 70.58 | 70.87 | 57.19 | 35.73 | 20.84 | 52.13 | |||||||||||||
2018 | 21.45 | 24.04 | 37.35 | 41.20 | 75.84 | 75.37 | 77.65 | 76.48 | 68.00 | 49.74 | 30.43 | 28.81 | 50.53 | |||||||||||||
2019 | 18.71 | 21.50 | 33.61 | 51.30 | 62.68 | 74.53 | 78.69 | r | 73.16 | 69.23 | 53.00 | 32.90 | 28.06 | 47.15 | a | |||||||||||
2020 | 25.87 | 29.14 | 41.68 | 52.93 | 65.74 | 77.50 | 80.48 | 76.74 | 66.43 | 47.71 | 45.30 | 29.61 | 53.26 | |||||||||||||
2021 | 26.39 | 19.64 | 49.47 | a | 54.93 | 67.48 | 81.10 | 79.77 | 78.39 | 72.60 | 62.23 | 41.13 | 29.90 | 55.25 | ||||||||||||
2022 | 18.26 | 22.68 | 36.45 | 47.40 | 68.19 | 77.70 | 79.32 | 75.87 | 70.23 | 58.26 | 41.77 | 24.29 | 51.70 | |||||||||||||
2023 | 25.39 | 30.25 | 36.39 | 52.00 | 71.97 | 80.03 | 79.77 | 79.10 | 71.60 | 56.06 | 43.63 | 37.74 | 55.33 | |||||||||||||
2024 | 24.58 | 41.76 | 45.26 | 56.24 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.20 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.41 | 26.99 | 38.87 | 53.19 | 67.41 | 75.69 | 80.22 | 77.31 | 68.54 | 56.45 | 39.27 | 26.01 | 52.63 | |||||||||||||
S.D. | 5.71 | 5.69 | 5.07 | 5.45 | 4.60 | 3.73 | 3.56 | 3.49 | 2.97 | 4.23 | 5.21 | 5.14 | 2.31 | |||||||||||||
SKEW | -0.24 | 0.28 | 0.66 | 0.09 | 0.14 | 0.30 | 0.20 | 0.47 | 0.15 | 0.22 | 0.27 | -0.13 | 0.28 | |||||||||||||
MAX | 36.19 | 41.76 | 53.81 | 67.30 | 77.90 | 88.13 | 90.74 | 87.35 | 77.23 | 68.87 | 54.13 | 37.74 | 58.90 | |||||||||||||
MIN | 7.12 | 16.18 | 30.00 | 41.20 | 55.60 | 63.93 | 71.53 | 70.45 | 61.17 | 47.06 | 29.37 | 15.43 | 48.22 | |||||||||||||
YRS | 65 | 64 | 67 | 62 | 67 | 65 | 64 | 69 | 70 | 68 | 67 | 69 | 47 |