YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.48 | g | 73.76 | 65.53 | 51.58 | a | 37.97 | 22.18 | 50.20 | g | ||||
1949 | 9.81 | 20.21 | 34.15 | 55.30 | 59.82 | 65.45 | 73.85 | 75.07 | a | 60.22 | 45.82 | 50.15 | 23.89 | 47.81 | ||||||||||||
1950 | 5.98 | 33.70 | a | 31.02 | a | 44.90 | a | 51.40 | 61.80 | 68.40 | 69.18 | 59.90 | ----- | z | ----- | z | ----- | z | 47.36 | c | ||||||
1951 | ----- | z | 32.63 | i | 30.67 | j | 43.50 | 58.08 | 57.53 | 71.42 | 69.82 | 57.02 | c | 47.90 | ----- | z | ----- | z | 57.90 | e | ||||||
1952 | 23.19 | 31.59 | 31.39 | 51.67 | a | 57.92 | 68.18 | 71.71 | 73.64 | i | ----- | z | ----- | z | ----- | z | ----- | z | 47.95 | e | ||||||
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 | 36.03 | 36.03 | k | |
1963 | 17.05 | a | 40.41 | a | 43.92 | 46.92 | 58.73 | 65.13 | 74.35 | 73.94 | 68.88 | a | 57.98 | 42.92 | 27.37 | 51.47 | ||||||||||
1964 | 33.74 | 34.60 | 33.94 | 46.57 | a | 58.82 | 64.78 | 77.27 | 69.29 | 58.33 | 53.69 | 33.95 | 23.85 | 49.07 | ||||||||||||
1965 | 33.65 | 30.27 | 25.55 | 49.33 | 55.34 | 63.88 | 73.87 | 70.81 | 49.57 | 55.98 | a | 40.82 | 32.45 | 48.46 | ||||||||||||
1966 | 20.35 | a | 26.20 | 40.88 | a | 45.05 | 61.40 | 65.15 | 77.71 | 70.71 | 66.33 | 52.32 | a | 37.15 | 30.89 | 49.51 | ||||||||||
1967 | 32.73 | 36.23 | 34.17 | a | 44.95 | 54.27 | 60.33 | 73.08 | 73.48 | 65.62 | 54.39 | 37.93 | 26.82 | a | 49.50 | |||||||||||
1968 | 25.50 | 35.72 | 44.47 | 47.74 | a | 54.56 | 63.82 | 72.87 | 69.81 | 62.90 | 52.90 | 39.28 | g | 23.79 | 50.37 | a | ||||||||||
1969 | 11.33 | a | 26.77 | 33.90 | 53.02 | 59.35 | 62.12 | a | 72.03 | 76.85 | a | 65.68 | 41.26 | 39.66 | a | 30.47 | 47.70 | |||||||||
1970 | 21.61 | 33.70 | 30.37 | 41.70 | 59.08 | 68.22 | 75.68 | 77.48 | 60.02 | 48.21 | b | 37.03 | 29.77 | 48.57 | ||||||||||||
1971 | 23.94 | 31.09 | 38.32 | 47.83 | 57.79 | 67.31 | a | 71.89 | 78.69 | 59.47 | 48.92 | 39.65 | 26.58 | 49.29 | ||||||||||||
1972 | 20.40 | 33.07 | 45.10 | a | 48.50 | 58.23 | 69.82 | 69.94 | 73.84 | 59.60 | 48.77 | 38.20 | 24.61 | 49.17 | ||||||||||||
1973 | 28.13 | 33.11 | 40.60 | 44.66 | a | 57.52 | a | 68.03 | 74.03 | 75.68 | 60.93 | 55.85 | 34.48 | a | 36.71 | 50.81 | ||||||||||
1974 | 28.98 | b | 40.39 | 40.60 | 52.33 | 54.53 | 68.72 | 76.39 | 68.19 | 60.16 | a | 55.12 | a | 41.48 | 35.40 | b | 51.86 | |||||||||
1975 | 29.11 | 21.52 | a | 33.40 | 39.29 | b | 53.77 | 62.80 | c | 75.84 | b | 69.68 | 62.88 | 52.53 | 37.57 | a | 35.45 | 47.82 | ||||||||
1976 | 27.96 | h | 37.54 | b | 37.58 | 50.48 | b | 59.73 | 64.48 | a | 75.84 | 72.89 | 65.50 | 50.58 | 40.93 | 38.03 | a | 53.96 | a | |||||||
1977 | 23.19 | 41.74 | a | 40.13 | 52.78 | 59.94 | 70.75 | 75.02 | 69.13 | 62.20 | 53.17 | a | 35.83 | 27.37 | 50.94 | |||||||||||
1978 | 16.52 | 21.39 | a | 40.08 | 50.75 | 55.98 | 66.58 | 72.00 | 71.32 | 65.42 | 54.71 | b | 29.04 | d | 25.00 | a | 47.40 | |||||||||
1979 | 13.75 | c | 25.61 | 40.59 | b | 46.95 | 57.40 | 67.57 | 73.88 | a | 73.89 | 68.83 | 56.52 | 36.52 | 39.85 | 50.11 | ||||||||||
1980 | 22.18 | 33.36 | 36.65 | 54.48 | 60.87 | 66.92 | 76.13 | 70.15 | 64.87 | 52.38 | c | 43.88 | 34.31 | 51.35 | ||||||||||||
1981 | 37.77 | 36.84 | 44.20 | c | 54.70 | 57.90 | a | 64.28 | 73.39 | 73.66 | 67.14 | a | 50.74 | 45.67 | 33.97 | 53.35 | ||||||||||
1982 | 20.87 | 33.38 | 38.17 | a | 47.60 | 55.40 | 62.91 | a | 72.45 | a | 75.52 | d | 61.17 | 52.35 | 35.62 | a | 32.53 | a | 49.00 | |||||||
1983 | 37.40 | 41.45 | 43.39 | 46.50 | a | 55.45 | 66.12 | 75.95 | 80.13 | 62.78 | 54.29 | 40.33 | 11.31 | 51.26 | ||||||||||||
1984 | 36.15 | a | 39.96 | a | 40.80 | d | 47.76 | c | 57.85 | a | 66.92 | 76.12 | a | 78.34 | 58.82 | 48.98 | c | 41.77 | b | 22.04 | e | 51.29 | ||||
1985 | 23.98 | b | 28.29 | b | 37.31 | b | 55.00 | a | 62.77 | 66.81 | a | 77.30 | c | 71.06 | 58.75 | 52.60 | b | 20.79 | b | 33.05 | 48.98 | |||||
1986 | 41.50 | a | 27.20 | 50.24 | 49.27 | 57.39 | 71.29 | a | 71.56 | 73.70 | a | 58.07 | 54.38 | a | 36.38 | b | 35.37 | a | 52.20 | |||||||
1987 | 34.73 | a | 38.79 | 42.03 | 56.50 | 62.35 | 69.52 | 71.50 | b | 67.68 | a | 62.80 | 52.63 | a | 43.52 | 32.66 | b | 52.89 | ||||||||
1988 | 29.93 | c | 33.27 | a | 43.47 | a | 53.88 | a | 61.68 | 77.41 | a | 77.73 | 73.18 | a | 61.88 | 56.18 | a | 41.04 | b | 34.97 | b | 53.72 | ||||
1989 | 33.37 | a | 19.84 | c | 35.05 | a | 49.23 | 59.05 | 66.87 | 77.55 | a | 72.68 | 64.48 | 52.00 | 43.22 | a | 30.31 | 50.30 | ||||||||
1990 | 36.61 | c | 33.69 | d | 41.84 | 50.10 | a | 56.52 | a | 65.91 | a | 74.25 | a | 74.93 | a | 70.30 | 53.28 | a | 45.33 | 24.86 | c | 52.30 | ||||
1991 | 24.64 | b | 44.35 | b | 40.28 | a | 47.40 | a | 57.84 | 68.50 | d | 76.11 | c | 77.87 | 63.08 | d | 51.84 | b | 37.32 | 37.48 | b | 52.23 | ||||
1992 | 40.24 | d | 44.70 | b | 47.95 | a | 53.14 | a | 61.82 | 68.59 | a | 68.50 | a | 69.22 | a | 63.82 | 53.70 | a | 40.59 | c | 25.32 | a | 53.13 | |||
1993 | 23.98 | d | 25.43 | 45.13 | a | 50.22 | 61.17 | a | 65.17 | 65.85 | 69.32 | 61.41 | a | 51.69 | 37.15 | c | 38.70 | a | 49.60 | |||||||
1994 | 32.73 | c | 28.40 | c | 46.02 | e | 50.58 | 63.18 | 70.43 | a | 74.50 | b | 75.79 | c | 66.02 | a | 51.15 | d | 37.26 | a | 34.76 | f | 54.19 | a | ||
1995 | 34.32 | a | 36.69 | a | 37.92 | a | 45.66 | a | 53.60 | a | 66.19 | a | 72.55 | a | 75.71 | b | 63.22 | 52.34 | b | 41.67 | f | 32.71 | b | 51.90 | a | |
1996 | 19.98 | d | 34.11 | a | 32.43 | a | 51.41 | a | 53.55 | 71.12 | e | 75.35 | a | 76.36 | b | 62.48 | b | 50.83 | b | 27.96 | b | 26.86 | f | 50.51 | a | |
1997 | 25.85 | e | 36.56 | a | 43.52 | c | 43.12 | d | 60.55 | c | 69.02 | a | 70.60 | b | 70.80 | f | 65.94 | d | 53.86 | i | 39.29 | a | 32.26 | h | 50.49 | c |
1998 | 32.26 | b | 39.38 | d | 35.95 | c | 48.85 | f | 60.57 | d | 61.78 | e | 77.45 | 74.25 | g | 70.41 | h | 49.90 | b | 41.52 | c | 30.30 | f | 49.85 | d | |
1999 | 34.65 | h | 42.73 | f | 43.21 | j | 46.14 | l | 56.75 | k | 65.20 | 75.29 | e | 74.65 | e | 60.97 | k | 54.16 | i | 49.12 | d | 39.96 | g | 66.06 | h | |
2000 | 32.08 | k | 33.86 | g | 42.04 | h | 50.16 | k | 60.64 | i | 66.59 | a | 76.17 | d | 74.89 | i | 62.48 | i | 48.62 | e | 29.96 | d | 23.50 | h | 55.33 | h |
2001 | 32.42 | f | 21.43 | g | 39.92 | g | 48.78 | e | 60.09 | h | 66.88 | e | 78.04 | d | 78.61 | d | 65.81 | d | 50.63 | e | 43.02 | i | 32.33 | m | 64.79 | f |
2002 | 30.59 | i | 36.87 | e | 30.13 | e | 43.19 | f | 55.96 | f | 68.91 | g | 79.88 | g | 71.15 | g | 65.09 | m | 43.15 | h | 42.56 | c | 35.61 | c | 36.29 | h |
2003 | 35.31 | g | 31.27 | f | 35.14 | c | 52.78 | a | 57.55 | 65.87 | 79.72 | a | 80.02 | a | 63.52 | c | 56.05 | c | 34.30 | b | 34.45 | a | 55.94 | b | ||
2004 | 25.85 | a | 34.05 | 44.87 | a | 52.10 | f | 56.43 | a | 63.78 | e | 74.43 | c | 70.88 | a | 62.44 | d | 50.75 | e | 41.00 | c | 37.57 | a | 51.10 | a | |
2005 | 24.05 | a | 35.46 | c | 41.44 | 47.88 | b | 54.45 | a | 65.25 | 76.08 | a | 70.95 | a | 63.38 | 50.79 | 42.13 | 28.60 | 50.04 | |||||||
2006 | 40.95 | 31.46 | a | 37.05 | 50.45 | b | 57.93 | b | 69.52 | a | 79.67 | a | 73.34 | 60.65 | 44.80 | a | 37.52 | a | 33.80 | a | 51.43 | |||||
2007 | 29.94 | 27.63 | b | 45.88 | c | 47.07 | b | 59.11 | c | 67.90 | 79.80 | a | 72.38 | e | 63.18 | b | 51.77 | 39.55 | 30.58 | 51.23 | ||||||
2008 | 25.09 | b | 32.23 | a | 38.18 | 43.98 | 54.52 | 62.32 | 74.08 | a | 70.63 | a | 53.26 | a | 47.45 | c | 42.52 | a | 22.47 | 47.23 | ||||||
2009 | 31.80 | a | 33.35 | a | 33.32 | a | 45.53 | 56.53 | 62.17 | 71.77 | 70.33 | a | 63.86 | b | 41.34 | c | 41.28 | a | 20.72 | d | 47.67 | |||||
2010 | 24.76 | 25.67 | a | 42.11 | d | 47.18 | b | 50.59 | c | 63.47 | 71.67 | a | 71.48 | c | 60.14 | b | 54.82 | a | 34.96 | c | 27.93 | c | 47.90 | |||
2011 | 29.14 | f | 25.37 | e | 35.60 | b | 43.80 | c | 51.12 | a | 63.16 | b | 75.98 | a | 74.57 | a | 64.00 | b | 54.48 | e | 38.60 | 33.32 | 50.91 | a | ||
2012 | 32.27 | 30.36 | a | 47.59 | c | 49.69 | c | 54.50 | e | 69.31 | c | 79.60 | 74.85 | 66.15 | 50.10 | 39.77 | b | 29.24 | d | 51.95 | ||||||
2013 | 30.27 | 33.00 | 37.15 | a | 42.27 | 57.94 | 66.34 | a | 75.79 | b | 74.95 | 63.98 | e | 45.42 | 36.65 | 26.42 | g | 51.25 | a | |||||||
2014 | 33.44 | 20.62 | 34.66 | b | 46.43 | 56.76 | 63.08 | 74.02 | 71.18 | 61.07 | 55.48 | a | 32.48 | 30.00 | 48.27 | |||||||||||
2015 | 32.55 | 32.75 | 46.83 | a | 47.73 | d | 53.16 | f | 70.10 | 73.08 | e | 71.74 | 65.33 | 54.20 | d | 34.05 | 31.86 | b | 50.93 | a | ||||||
2016 | 30.90 | a | 40.26 | 43.97 | a | 49.66 | a | 56.23 | e | 70.57 | 74.60 | 71.82 | 63.20 | 52.58 | 45.38 | 23.53 | a | 51.89 | ||||||||
2017 | 18.06 | e | 39.58 | p | 42.84 | 47.30 | 57.77 | 68.26 | a | 78.63 | 70.73 | 61.43 | 48.30 | a | 40.90 | 31.71 | e | 51.45 | a | |||||||
2018 | ----- | z | ----- | z | 41.60 | b | 44.43 | 60.60 | 65.15 | 72.65 | 70.06 | 59.67 | 46.65 | 36.58 | 30.50 | 52.79 | b | |||||||||
2019 | 30.93 | b | 8.91 | 28.18 | 48.64 | a | 50.72 | f | 64.92 | 71.27 | 72.29 | 63.03 | 43.05 | 40.33 | a | 37.39 | 46.27 | a | ||||||||
2020 | 35.82 | 36.67 | 39.64 | b | 44.12 | a | 54.85 | e | 67.81 | d | 73.50 | 73.85 | 63.21 | a | 45.11 | c | 35.50 | a | 38.28 | d | 50.70 | |||||
2021 | 34.53 | b | 18.46 | c | 41.88 | b | 47.62 | 54.68 | f | 73.16 | b | 77.50 | e | 73.14 | f | 63.93 | a | 52.75 | c | 44.72 | 27.52 | 48.21 | b | |||
2022 | 34.17 | b | 28.55 | 36.02 | b | 35.59 | s | 58.94 | w | 65.07 | i | 76.50 | 76.21 | 66.96 | c | 43.00 | s | 21.61 | h | 16.07 | h | 53.07 | f | |||
2023 | 25.38 | k | 31.62 | 26.98 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.30 | j | |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.69 | 31.96 | 38.91 | 48.38 | 57.50 | 66.44 | 74.47 | 73.12 | 62.67 | 51.26 | 38.79 | 30.39 | 50.23 | |||||||||||||
S.D. | 7.97 | 6.96 | 5.50 | 3.73 | 2.94 | 3.31 | 2.90 | 3.08 | 3.54 | 3.74 | 4.98 | 5.73 | 1.83 | |||||||||||||
SKEW | -0.57 | -0.73 | -0.31 | 0.09 | -0.23 | 0.30 | -0.36 | 0.40 | -0.89 | -0.80 | -0.75 | -0.68 | 0.05 | |||||||||||||
MAX | 41.50 | 44.70 | 50.24 | 56.50 | 63.18 | 77.41 | 79.80 | 80.13 | 70.30 | 57.98 | 50.15 | 39.85 | 53.72 | |||||||||||||
MIN | 5.98 | 8.91 | 25.55 | 39.29 | 50.59 | 57.53 | 65.85 | 67.68 | 49.57 | 41.26 | 20.79 | 11.31 | 47.23 | |||||||||||||
YRS | 55 | 58 | 61 | 58 | 56 | 62 | 63 | 59 | 60 | 59 | 58 | 54 | 40 |