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 | ----- | 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 | 78.30 | 81.00 | 82.61 | 69.80 | 61.13 | 40.40 | 24.74 | 62.57 | e | |||||||
1962 | 17.77 | 22.36 | 37.55 | 53.67 | 70.61 | 76.27 | 77.35 | 79.06 | 68.03 | 61.13 | 41.97 | 27.84 | 52.80 | |||||||||||||
1963 | 12.03 | 22.75 | 42.58 | 59.43 | 66.90 | 79.77 | 84.32 | 78.55 | 72.17 | 68.26 | 46.30 | 18.16 | 54.27 | |||||||||||||
1964 | 29.10 | 32.80 | n | 35.93 | d | 57.93 | 74.13 | 80.03 | 89.52 | 80.84 | 68.20 | 57.61 | 43.13 | 22.52 | 58.09 | a | ||||||||||
1965 | 19.42 | 23.14 | 30.68 | 50.80 | 72.06 | 76.80 | 80.16 | 78.10 | 61.90 | 61.19 | 40.20 | 31.90 | 52.20 | |||||||||||||
1966 | 15.73 | a | 26.75 | 43.39 | 52.13 | 66.97 | 80.47 | 85.32 | 77.00 | 70.90 | 58.68 | 38.30 | 25.74 | 53.45 | ||||||||||||
1967 | 25.00 | 21.18 | 37.94 | 54.97 | 64.87 | 76.57 | 79.58 | 77.16 | 71.63 | 56.45 | 37.93 | 29.81 | 52.76 | |||||||||||||
1968 | 22.61 | 24.45 | 50.06 | 60.03 | 64.58 | 75.80 | 80.55 | 80.13 | 69.73 | 59.58 | 40.83 | 25.19 | 54.46 | |||||||||||||
1969 | 18.87 | 29.14 | 34.77 | 58.60 | 71.00 | 70.13 | 81.45 | 85.45 | 72.23 | 54.48 | 40.43 | 27.20 | a | 53.65 | ||||||||||||
1970 | 15.42 | 28.04 | 35.16 | 56.40 | 67.87 | 79.57 | 84.58 | 81.90 | 69.40 | 58.65 | 38.07 | 26.71 | 53.48 | |||||||||||||
1971 | 16.23 | 25.71 | 35.03 | 59.00 | 66.90 | 81.13 | 78.74 | 78.65 | 70.90 | 62.55 | 41.07 | 26.61 | 53.54 | |||||||||||||
1972 | 17.74 | 22.34 | 34.10 | 52.00 | 73.42 | 77.07 | 78.32 | 77.87 | 68.20 | 53.65 | 36.97 | 20.52 | 51.02 | |||||||||||||
1973 | 25.32 | 29.29 | 47.29 | 54.53 | 64.42 | 78.57 | 83.10 | 81.03 | 68.30 | 64.16 | 41.87 | 26.00 | 55.32 | |||||||||||||
1974 | 21.90 | 28.32 | 37.39 | 57.63 | 65.13 | 75.33 | 87.03 | 77.94 | 67.43 | 60.26 | 42.53 | 31.74 | 54.39 | |||||||||||||
1975 | 24.65 | 25.89 | 33.20 | a | 47.30 | 72.55 | 75.93 | 85.00 | 79.61 | 66.43 | 63.26 | 46.57 | 25.94 | 53.86 | ||||||||||||
1976 | 21.61 | 35.38 | 40.16 | 61.93 | 70.26 | 82.60 | 87.84 | 83.45 | 73.77 | 55.06 | 36.90 | 18.87 | 55.65 | |||||||||||||
1977 | 10.74 | 30.50 | 46.23 | 64.73 | 79.13 | 76.50 | 83.00 | 77.23 | 67.83 | 57.94 | 39.23 | 22.71 | 54.65 | |||||||||||||
1978 | 18.35 | 23.18 | 39.26 | 55.30 | 72.61 | 77.03 | 78.68 | 79.90 | 76.07 | 58.42 | 39.47 | 22.58 | 53.40 | |||||||||||||
1979 | 10.93 | a | 19.32 | 35.87 | 51.87 | 65.26 | 75.80 | 80.00 | 76.55 | 73.13 | 56.00 | 39.33 | 32.84 | 51.41 | ||||||||||||
1980 | 22.10 | 24.83 | 35.42 | 61.33 | 75.35 | 77.27 | 83.84 | 79.68 | 69.33 | 53.45 | 43.13 | 26.52 | 54.35 | |||||||||||||
1981 | 27.42 | 31.07 | 45.81 | 59.23 | 68.94 | 77.50 | 81.48 | 79.17 | a | 69.90 | 55.48 | 46.73 | 26.03 | 55.73 | ||||||||||||
1982 | 12.90 | 25.57 | 36.00 | 52.40 | 73.16 | 73.23 | 83.32 | 79.97 | 68.70 | 59.26 | 38.73 | 32.13 | 52.95 | |||||||||||||
1983 | 26.71 | 31.54 | 39.45 | 51.83 | 64.42 | 77.17 | 84.97 | 83.55 | 71.63 | 58.10 | 40.07 | 14.65 | 53.67 | |||||||||||||
1984 | 22.00 | 36.17 | 35.06 | 58.53 | 66.84 | 77.57 | 80.19 | 81.48 | 68.03 | 60.73 | a | 42.60 | 27.77 | 54.75 | ||||||||||||
1985 | 20.61 | 25.36 | 45.71 | 62.31 | a | 73.37 | a | 74.59 | a | 82.29 | 75.87 | 68.30 | 58.52 | 32.86 | a | 17.23 | 53.08 | |||||||||
1986 | 26.03 | b | 25.32 | 43.81 | 61.67 | 71.39 | 79.93 | 81.13 | 76.48 | 67.67 | 58.00 | 37.87 | 30.10 | b | 54.95 | |||||||||||
1987 | 28.97 | a | 39.68 | 47.94 | 67.03 | 73.81 | 83.38 | a | 83.57 | a | 76.83 | b | 72.73 | 53.71 | 45.07 | 31.52 | 58.68 | |||||||||
1988 | 20.32 | 24.52 | 42.61 | 61.28 | a | 77.68 | 85.70 | 90.39 | 84.94 | 73.24 | a | 55.13 | 40.37 | 28.32 | 57.04 | |||||||||||
1989 | 31.19 | 20.75 | 34.32 | 55.14 | b | 69.90 | a | 76.72 | a | 83.90 | 79.29 | 71.63 | 62.90 | 36.57 | 19.13 | 53.45 | ||||||||||
1990 | 34.73 | a | 34.04 | a | 45.23 | 60.53 | 67.39 | 78.17 | 79.32 | 79.19 | 73.33 | 60.19 | 48.03 | 26.77 | 57.24 | |||||||||||
1991 | 22.00 | 36.00 | a | 43.48 | 61.70 | 70.58 | 80.33 | 79.52 | 81.45 | 68.60 | 59.43 | a | 34.89 | l | 30.06 | 57.56 | a | |||||||||
1992 | 26.84 | 33.69 | 41.13 | 50.53 | 72.32 | 74.20 | 74.55 | 74.90 | ----- | z | 55.19 | 35.00 | 27.29 | 51.42 | a | |||||||||||
1993 | 22.23 | 24.11 | 37.61 | 52.33 | 66.29 | 71.30 | 75.06 | 76.81 | 60.87 | 53.81 | 35.60 | 25.35 | 50.11 | |||||||||||||
1994 | 10.13 | 17.68 | 39.45 | 53.33 | 68.94 | 76.90 | 76.35 | 73.77 | 70.50 | 57.71 | 42.77 | 29.19 | 51.39 | |||||||||||||
1995 | 21.10 | 23.79 | 38.00 | 46.10 | 64.39 | 79.17 | a | 78.87 | a | 78.97 | a | 66.27 | 54.06 | 29.34 | a | 22.19 | 50.19 | |||||||||
1996 | 16.55 | 21.52 | 28.58 | 48.57 | 62.10 | 73.80 | 76.10 | 78.39 | 68.37 | 56.26 | 30.07 | a | 20.61 | 48.41 | ||||||||||||
1997 | 16.35 | 27.07 | 35.97 | b | 52.60 | 60.06 | 77.83 | 75.97 | 73.19 | 69.07 | 56.19 | 34.43 | 31.65 | 50.87 | ||||||||||||
1998 | 23.32 | 36.89 | 35.93 | b | 55.74 | k | ----- | z | 72.87 | 81.34 | b | 79.97 | 77.47 | 58.26 | 43.60 | 33.55 | 54.32 | b | ||||||||
1999 | 17.58 | 32.64 | 40.87 | 57.07 | 68.77 | 75.17 | 84.17 | y | 76.35 | 69.80 | 57.57 | a | 49.62 | a | ----- | z | 54.54 | b | ||||||||
2000 | 21.68 | 32.17 | 48.29 | 54.47 | 68.97 | 72.90 | 79.06 | 77.32 | 69.33 | 61.68 | 37.67 | 13.83 | a | 53.11 | ||||||||||||
2001 | 25.68 | 20.07 | 34.23 | 56.07 | 67.32 | 74.70 | 81.35 | 80.16 | 67.00 | 55.81 | 53.10 | 33.32 | 54.07 | |||||||||||||
2002 | 29.52 | 33.39 | 30.19 | d | 51.77 | 61.27 | a | 76.83 | 83.10 | a | 77.23 | 71.63 | 49.10 | 38.80 | 30.35 | 52.76 | ||||||||||
2003 | 20.87 | 21.46 | 37.61 | 54.66 | a | 66.06 | 73.80 | 79.35 | 82.32 | 70.93 | 57.68 | 37.83 | 29.81 | 52.70 | ||||||||||||
2004 | 16.74 | 26.66 | 39.52 | 56.90 | 63.23 | 72.53 | 77.90 | 72.00 | 74.50 | 57.48 | 44.67 | 26.48 | 52.38 | |||||||||||||
2005 | 20.19 | 31.93 | 36.03 | a | 59.27 | 62.23 | 79.23 | 81.23 | 71.97 | 64.77 | 58.06 | 42.50 | 23.55 | 52.58 | ||||||||||||
2006 | 32.32 | 24.96 | 38.74 | 61.20 | 68.06 | 78.93 | b | 88.71 | 78.90 | 66.20 | 53.60 | a | 42.40 | 33.74 | 55.65 | |||||||||||
2007 | 26.06 | 17.82 | 42.90 | 54.67 | 70.52 | 79.77 | 81.32 | 77.68 | 71.33 | 60.13 | 40.20 | 22.00 | 53.70 | |||||||||||||
2008 | 19.03 | a | 20.72 | 33.29 | 49.60 | 64.39 | 74.97 | 80.94 | 79.39 | 71.97 | 57.29 | 40.87 | 21.61 | 51.17 | ||||||||||||
2009 | 13.81 | 27.61 | 38.32 | 54.07 | 68.10 | 75.40 | 74.97 | 76.52 | 74.67 | 48.48 | 48.53 | 22.77 | 51.94 | |||||||||||||
2010 | 19.90 | 27.21 | 48.16 | 63.87 | 68.77 | 74.07 | 81.35 | 81.55 | 66.23 | 61.23 | 40.80 | 20.90 | 54.50 | |||||||||||||
2011 | 16.87 | 24.68 | 35.13 | 51.60 | 63.61 | 74.83 | 84.26 | 79.29 | 68.03 | 62.93 | a | 44.21 | b | 31.48 | 53.08 | |||||||||||
2012 | 27.55 | 33.24 | 54.81 | 56.67 | 72.45 | 79.31 | a | 86.26 | 81.41 | d | 73.47 | 54.39 | 42.87 | 29.71 | 57.68 | |||||||||||
2013 | 23.35 | 24.61 | 31.77 | 44.57 | 64.87 | a | 74.52 | a | 80.47 | a | 82.48 | d | 74.54 | b | 56.58 | 38.27 | 18.00 | a | 51.17 | |||||||
2014 | 15.32 | 15.21 | 30.47 | a | 48.04 | d | 66.45 | 77.86 | a | 78.32 | 78.11 | d | 69.17 | 56.53 | a | 31.60 | 28.81 | 49.66 | ||||||||
2015 | 21.77 | 16.93 | 42.39 | 59.30 | 68.48 | 76.13 | 80.19 | 76.00 | 75.93 | a | 59.13 | 47.80 | 34.77 | 54.90 | ||||||||||||
2016 | 21.97 | 29.24 | 46.42 | 54.70 | c | 69.39 | 77.00 | a | 80.58 | 79.48 | 71.57 | 60.00 | 51.03 | 24.58 | 55.50 | |||||||||||
2017 | 24.71 | 36.18 | 38.81 | 57.00 | 64.48 | 77.57 | 80.53 | a | 74.16 | 73.37 | 58.87 | 38.17 | 23.13 | 53.91 | ||||||||||||
2018 | 20.90 | 22.79 | 38.48 | 43.67 | 76.90 | 77.00 | 81.61 | 78.94 | 71.07 | 50.97 | 32.17 | 29.19 | 51.97 | |||||||||||||
2019 | 20.00 | 20.18 | 34.39 | 52.83 | 62.87 | 76.67 | 81.06 | 77.00 | 71.33 | 52.32 | 33.80 | 28.23 | 50.89 | |||||||||||||
2020 | 25.55 | 28.00 | 41.16 | 52.13 | 65.10 | 78.17 | 82.16 | 79.19 | 67.90 | 48.84 | 46.37 | 30.94 | 53.79 | |||||||||||||
2021 | 25.81 | 18.18 | 47.61 | 55.73 | 66.58 | 83.33 | 82.00 | 80.06 | 72.97 | 62.94 | 42.17 | 30.13 | 55.63 | |||||||||||||
2022 | 16.94 | 21.82 | 36.97 | 47.70 | 67.65 | 78.57 | 81.45 | 77.97 | 71.27 | 58.65 | 41.63 | 22.81 | 51.95 | |||||||||||||
2023 | 26.03 | 27.61 | 35.13 | a | 52.07 | 71.16 | 81.47 | 80.90 | 80.03 | 73.50 | 58.10 | 42.97 | 38.00 | 55.58 | ||||||||||||
2024 | 24.07 | d | 41.10 | 45.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.83 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.42 | 26.67 | 39.29 | 55.32 | 68.41 | 77.17 | 81.40 | 78.77 | 70.23 | 57.67 | 40.72 | 26.38 | 53.46 | |||||||||||||
S.D. | 5.36 | 5.88 | 5.51 | 5.03 | 4.16 | 2.96 | 3.40 | 2.79 | 3.18 | 3.75 | 4.90 | 5.12 | 2.03 | |||||||||||||
SKEW | 0.03 | 0.39 | 0.46 | -0.07 | 0.38 | 0.31 | 0.40 | -0.13 | -0.35 | -0.16 | 0.03 | -0.31 | 0.07 | |||||||||||||
MAX | 34.73 | 41.10 | 54.81 | 67.03 | 79.13 | 85.70 | 90.39 | 85.45 | 77.47 | 68.26 | 53.10 | 38.00 | 58.68 | |||||||||||||
MIN | 10.13 | 15.21 | 28.58 | 43.67 | 60.06 | 70.13 | 74.55 | 71.97 | 60.87 | 48.48 | 29.34 | 13.83 | 48.41 | |||||||||||||
YRS | 63 | 62 | 63 | 61 | 61 | 63 | 62 | 63 | 62 | 63 | 62 | 62 | 57 |