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 | 67.53 | m | 56.33 | a | 48.23 | ----- | z | 52.28 | j | |
1961 | ----- | z | 38.44 | a | 42.58 | 49.57 | 63.48 | 73.30 | 75.74 | 73.13 | 63.53 | 58.19 | 37.97 | 29.68 | 55.06 | a | ||||||||||
1962 | 25.68 | 39.43 | 40.52 | 56.07 | 63.87 | 70.77 | 76.13 | 77.16 | 70.50 | 63.55 | 48.00 | 37.13 | 55.73 | |||||||||||||
1963 | 27.97 | 40.18 | 43.35 | 55.57 | 66.81 | 73.07 | 80.16 | 73.00 | 72.30 | 65.48 | 46.70 | 34.84 | 56.62 | |||||||||||||
1964 | 30.84 | 31.72 | 37.61 | 49.77 | 62.29 | 70.70 | 79.97 | 73.42 | 68.40 | 63.10 | 40.23 | 28.87 | 53.08 | |||||||||||||
1965 | 32.97 | a | 33.96 | 33.68 | 50.60 | 59.48 | 67.77 | 75.29 | 71.58 | 62.13 | 63.13 | 47.47 | 35.58 | 52.80 | ||||||||||||
1966 | 30.10 | 32.29 | 48.06 | 52.57 | 64.71 | 71.07 | 79.45 | 73.10 | 70.13 | 58.48 | 49.03 | 34.03 | 55.25 | |||||||||||||
1967 | 37.71 | 38.61 | 50.61 | 55.38 | a | 59.76 | b | 67.40 | 76.03 | 71.77 | 68.33 | 61.93 | a | 45.41 | a | 30.58 | 55.29 | |||||||||
1968 | 28.42 | 31.45 | 39.71 | 49.10 | 60.45 | 75.27 | 75.29 | 71.20 | a | 67.37 | 60.48 | 41.40 | 35.94 | 53.01 | ||||||||||||
1969 | 40.42 | 39.07 | 39.00 | 55.63 | 64.29 | 66.50 | 76.58 | 77.29 | 68.43 | 42.42 | 35.23 | 25.94 | 52.57 | |||||||||||||
1970 | 30.10 | 38.00 | 35.10 | 43.57 | 63.97 | 69.57 | 76.87 | 76.13 | 66.33 | 51.35 | 43.60 | 38.13 | 52.73 | |||||||||||||
1971 | 36.16 | 34.82 | 43.55 | 51.50 | 59.26 | 73.17 | 74.90 | 73.39 | 65.67 | 57.45 | 38.93 | 29.26 | 53.17 | |||||||||||||
1972 | 33.26 | 39.31 | 49.52 | 54.27 | 62.00 | 72.30 | 76.00 | 73.84 | 67.30 | 57.74 | 29.14 | a | 25.61 | 53.36 | ||||||||||||
1973 | 23.16 | 26.11 | 34.97 | a | 43.70 | 58.84 | 70.47 | 73.55 | 74.81 | 65.87 | 60.40 | a | 48.00 | 37.81 | 51.47 | |||||||||||
1974 | 29.35 | 34.71 | 47.39 | 51.27 | 66.35 | 73.67 | 76.42 | 72.19 | 66.63 | 58.32 | 43.70 | 26.77 | 53.90 | |||||||||||||
1975 | 32.23 | 33.81 | a | 41.45 | 48.57 | 59.29 | 69.50 | 75.71 | 74.65 | 67.23 | 62.10 | 41.30 | 38.06 | 53.66 | ||||||||||||
1976 | 35.47 | a | 44.66 | 42.68 | 52.77 | 60.16 | 71.87 | 76.58 | 71.74 | 66.07 | a | 53.83 | a | 43.90 | a | 37.23 | 54.75 | |||||||||
1977 | 33.71 | 39.64 | 39.39 | 51.50 | 60.87 | 73.97 | 75.48 | 73.45 | 68.77 | 60.06 | 44.57 | 37.55 | 54.91 | |||||||||||||
1978 | 35.35 | 38.21 | 46.13 | 54.10 | a | 56.32 | 70.87 | 78.23 | 73.52 | 68.70 | 57.77 | 44.07 | 26.65 | 54.16 | ||||||||||||
1979 | 23.03 | 33.29 | 39.06 | 50.40 | 56.90 | 67.53 | 76.13 | 71.19 | 69.70 | 58.55 | 35.10 | 29.68 | 50.88 | |||||||||||||
1980 | 29.10 | 32.24 | 35.81 | 43.73 | 54.48 | 73.70 | 78.42 | 74.29 | 68.47 | 57.13 | 40.20 | 42.97 | 52.54 | |||||||||||||
1981 | 37.06 | 41.00 | 39.26 | 56.70 | 57.26 | 74.17 | 74.48 | 71.39 | 67.30 | 55.55 | 47.27 | 36.42 | 54.82 | |||||||||||||
1982 | 32.30 | a | 34.89 | 42.16 | 49.70 | 56.77 | 65.80 | 74.71 | 72.94 | 64.27 | 52.47 | a | 43.40 | 32.81 | 51.85 | |||||||||||
1983 | 26.39 | 32.18 | 39.29 | 42.27 | 53.23 | 64.73 | 75.52 | 74.26 | 69.47 | 57.19 | 42.03 | a | 29.55 | 50.51 | ||||||||||||
1984 | 20.26 | 28.93 | 36.26 | 44.17 | 62.81 | 68.03 | 75.74 | 71.65 | 65.83 | 45.90 | 43.27 | 36.26 | 49.93 | |||||||||||||
1985 | 30.71 | 32.89 | 41.39 | 50.97 | 59.77 | 70.83 | 74.06 | 75.68 | 63.13 | 55.23 | 41.10 | 31.77 | 52.29 | |||||||||||||
1986 | 38.19 | 38.79 | 48.87 | 51.10 | 59.19 | 71.17 | 73.71 | 74.16 | 63.33 | 52.32 | 35.40 | 16.81 | 51.92 | |||||||||||||
1987 | 25.30 | a | 23.96 | 31.23 | 47.93 | 58.35 | 71.50 | 76.10 | 72.19 | 66.90 | 60.48 | 43.33 | 30.32 | 50.63 | ||||||||||||
1988 | 26.39 | 37.10 | 39.61 | 52.00 | 59.74 | 72.27 | 74.29 | 74.23 | 65.63 | 61.58 | 42.80 | 27.81 | 52.79 | |||||||||||||
1989 | 24.55 | 27.89 | 48.39 | 53.37 | 62.00 | 67.80 | 77.26 | 71.61 | 66.97 | 56.16 | 46.53 | 31.80 | a | 52.86 | ||||||||||||
1990 | 32.00 | 37.57 | 42.35 | 50.90 | a | 57.10 | 75.07 | 73.90 | 70.90 | 69.70 | 56.06 | ----- | z | 29.81 | 54.12 | a | ||||||||||
1991 | 33.16 | 41.21 | 41.94 | 49.40 | 61.52 | 70.50 | 73.68 | 72.94 | 67.03 | 59.32 | 39.27 | 27.94 | 53.16 | |||||||||||||
1992 | 30.35 | 37.00 | 43.42 | 57.30 | 62.19 | 69.03 | 72.61 | 72.77 | a | 68.93 | 61.19 | 34.60 | 31.26 | 53.39 | ||||||||||||
1993 | 31.74 | 32.14 | 44.33 | a | 50.27 | 60.23 | 70.67 | 76.58 | 71.16 | 66.69 | a | 55.19 | 36.66 | a | 36.06 | 52.64 | ||||||||||
1994 | 35.65 | 34.61 | 48.13 | 50.23 | 62.48 | 75.67 | 76.84 | 74.94 | 67.63 | 54.77 | 43.00 | 39.77 | 55.31 | |||||||||||||
1995 | 36.90 | 42.75 | 44.10 | 46.00 | 53.81 | 66.37 | 73.97 | 77.68 | 65.50 | 58.35 | 50.17 | a | 38.97 | a | 54.55 | |||||||||||
1996 | 36.29 | 42.97 | 43.13 | 51.03 | 65.03 | 71.90 | 77.57 | a | 74.19 | 63.83 | a | 57.45 | 45.53 | 35.65 | 55.38 | |||||||||||
1997 | 34.35 | 36.18 | 49.23 | 46.50 | 60.00 | 70.63 | 76.20 | a | 72.48 | 69.72 | a | 54.90 | b | 37.88 | f | 20.91 | i | 57.02 | b | |||||||
1998 | 30.63 | d | 29.69 | b | 39.74 | 47.00 | 63.45 | 69.80 | 76.42 | 73.87 | 72.13 | 56.45 | ----- | z | 36.81 | 54.18 | a | |||||||||
1999 | 37.71 | 43.32 | 49.65 | 45.43 | 57.55 | 68.97 | 75.55 | 71.97 | 65.69 | a | 60.13 | a | 53.03 | 34.32 | 55.28 | |||||||||||
2000 | 36.29 | 39.76 | 43.23 | 54.80 | 64.81 | 72.00 | 78.42 | 77.58 | 69.67 | 57.26 | 38.13 | 36.13 | 55.67 | |||||||||||||
2001 | 33.61 | 37.36 | 43.45 | 53.47 | 61.00 | a | 73.83 | 78.97 | 74.32 | 70.90 | 60.80 | a | 49.00 | 37.65 | 56.20 | |||||||||||
2002 | 35.81 | 35.86 | 43.03 | 58.10 | 63.27 | a | 77.93 | 80.29 | 76.65 | 67.13 | 54.90 | 44.20 | 37.55 | 56.23 | ||||||||||||
2003 | 43.87 | 34.11 | 41.68 | 53.86 | a | 63.35 | 69.50 | 83.55 | 76.29 | 68.90 | a | 64.39 | 42.73 | 39.71 | 56.83 | |||||||||||
2004 | 36.47 | a | 28.79 | 51.42 | 49.33 | 64.03 | 69.60 | 73.68 | 72.32 | 66.83 | a | 55.39 | 38.20 | 37.40 | a | 53.62 | ||||||||||
2005 | 39.58 | 36.68 | 42.74 | 50.80 | 62.84 | 70.23 | 79.74 | 72.65 | 68.77 | 58.71 | 46.13 | 34.53 | a | 55.28 | ||||||||||||
2006 | 36.43 | a | 37.29 | 42.39 | 55.57 | 63.52 | 74.97 | 75.03 | 70.19 | 61.17 | 52.61 | 46.37 | 32.58 | 54.01 | ||||||||||||
2007 | 20.42 | 35.54 | 46.68 | 48.60 | 59.00 | 71.17 | 76.65 | 74.42 | 68.50 | 58.13 | 48.80 | 28.48 | 53.03 | |||||||||||||
2008 | 24.06 | 31.17 | 39.00 | 48.50 | 57.65 | 71.90 | 78.48 | 73.90 | 67.69 | a | 59.52 | 49.21 | a | 34.48 | 52.96 | |||||||||||
2009 | 36.74 | 41.04 | 46.55 | 48.53 | 63.03 | 67.10 | 76.90 | 75.00 | 65.70 | 50.37 | a | 47.23 | 24.19 | 53.53 | ||||||||||||
2010 | 30.10 | 28.04 | 37.35 | 50.50 | 57.65 | 73.67 | 78.10 | 74.84 | 73.37 | 57.65 | 43.73 | 42.03 | 53.92 | |||||||||||||
2011 | 33.26 | 30.61 | 46.90 | 51.20 | 55.00 | 74.83 | 79.74 | 77.87 | 67.73 | 54.71 | 42.14 | a | 29.39 | c | 53.62 | |||||||||||
2012 | 35.42 | 32.93 | a | 50.35 | 56.53 | 62.35 | 77.47 | 78.16 | 76.00 | 68.67 | 57.58 | 50.73 | 30.61 | 56.40 | ||||||||||||
2013 | 23.00 | a | 32.57 | 42.29 | 46.20 | 58.65 | 75.60 | 75.29 | 75.42 | 69.27 | 55.06 | 42.07 | 27.87 | 51.94 | ||||||||||||
2014 | 33.52 | 32.96 | a | 42.35 | 48.37 | 57.42 | 71.97 | 76.61 | 71.58 | 70.33 | 59.68 | 44.20 | 31.55 | 53.38 | ||||||||||||
2015 | 32.68 | 38.41 | a | 47.87 | 51.20 | 55.03 | a | 73.37 | 73.19 | 76.16 | 73.47 | 60.77 | 42.93 | 25.39 | 54.21 | |||||||||||
2016 | 24.68 | c | 39.28 | 44.77 | 49.47 | 56.90 | 76.07 | 78.71 | 73.23 | 70.63 | 63.10 | 48.90 | a | 33.03 | a | 54.90 | ||||||||||
2017 | 27.76 | b | 42.32 | 50.73 | a | 50.93 | a | 58.32 | 74.90 | a | 76.59 | b | 72.45 | 68.14 | a | 57.07 | a | 51.86 | a | 41.97 | a | 56.09 | ||||
2018 | 38.61 | c | 38.75 | 46.03 | 52.40 | 65.71 | 77.90 | 80.00 | a | 75.65 | 72.40 | 53.67 | a | 38.87 | 34.48 | 56.21 | ||||||||||
2019 | 26.97 | b | 32.96 | 42.35 | 51.41 | a | 53.65 | 68.27 | 78.16 | 77.00 | 72.80 | 50.52 | 43.10 | 23.00 | a | 51.68 | ||||||||||
2020 | 29.97 | 28.66 | 44.58 | 50.83 | 64.77 | 73.03 | 77.19 | 79.03 | 67.77 | 58.77 | 46.90 | 29.35 | 54.24 | |||||||||||||
2021 | 29.13 | a | 32.61 | 40.87 | 50.07 | 60.23 | 72.90 | 76.87 | 75.00 | 73.50 | 57.03 | 51.23 | 42.06 | 55.13 | ||||||||||||
2022 | 36.13 | 31.93 | 44.23 | 51.10 | 60.45 | 71.83 | 77.00 | 73.87 | 71.87 | 57.26 | 43.23 | 37.26 | 54.68 | |||||||||||||
2023 | 33.13 | 35.43 | 40.19 | 50.77 | 61.19 | 67.40 | 80.77 | 76.35 | 70.43 | 59.81 | 45.07 | 32.26 | 54.40 | |||||||||||||
2024 | 31.45 | 36.41 | 39.26 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.71 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.81 | 35.41 | 42.86 | 50.71 | 60.41 | 71.50 | 76.67 | 73.96 | 68.05 | 57.40 | 43.68 | 33.05 | 53.82 | |||||||||||||
S.D. | 5.13 | 4.50 | 4.49 | 3.55 | 3.33 | 3.04 | 2.16 | 2.03 | 2.76 | 4.11 | 4.76 | 5.25 | 1.64 | |||||||||||||
SKEW | -0.28 | -0.19 | -0.13 | -0.19 | -0.23 | 0.00 | 0.57 | 0.39 | -0.09 | -0.95 | -0.50 | -0.41 | -0.21 | |||||||||||||
MAX | 43.87 | 44.66 | 51.42 | 58.10 | 66.81 | 77.93 | 83.55 | 79.03 | 73.50 | 65.48 | 53.03 | 42.97 | 56.83 | |||||||||||||
MIN | 20.26 | 23.96 | 31.23 | 42.27 | 53.23 | 64.73 | 72.61 | 70.19 | 61.17 | 42.42 | 29.14 | 16.81 | 49.93 | |||||||||||||
YRS | 63 | 64 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 61 | 62 | 59 |