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 | ----- | 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 | 75.05 | t | 76.23 | 71.08 | a | 66.16 | a | 56.24 | 39.37 | 24.11 | 55.53 | f | ||||
1964 | 28.40 | 26.93 | 31.69 | 46.50 | a | 58.10 | 64.26 | a | 76.95 | 70.23 | 61.08 | 50.47 | 36.22 | 29.06 | 48.32 | |||||||||||
1965 | 31.79 | 27.32 | 28.24 | 49.90 | 56.81 | 63.95 | 71.48 | 67.87 | 54.22 | 53.58 | 41.20 | 29.23 | 47.97 | |||||||||||||
1966 | 22.10 | a | 25.34 | 40.00 | b | 42.69 | a | 57.32 | 65.08 | 75.05 | j | 70.24 | j | ----- | z | ----- | z | 43.38 | j | ----- | z | 42.09 | f | |||
1967 | 32.23 | ----- | z | 42.78 | h | 48.55 | 52.15 | 61.18 | 70.08 | g | 66.52 | f | 62.08 | l | 56.11 | q | 43.12 | v | ----- | z | 48.53 | h | ||||
1968 | ----- | z | 35.86 | a | 42.47 | p | 43.55 | a | 52.08 | 65.50 | 69.09 | i | 72.10 | k | 60.16 | b | 55.57 | a | 40.07 | c | ----- | z | 50.40 | e | ||
1969 | ----- | z | 34.47 | k | 31.68 | 50.26 | c | 57.94 | 61.12 | 73.61 | 73.45 | 64.40 | 39.81 | 37.50 | g | 29.94 | 53.58 | c | ||||||||
1970 | 27.06 | 35.71 | 31.76 | 42.17 | 58.16 | b | 65.79 | d | 72.42 | 72.71 | 59.38 | 45.05 | 37.15 | 26.82 | 47.85 | |||||||||||
1971 | 25.76 | 30.56 | a | 34.84 | 46.42 | 53.68 | 67.52 | a | 71.06 | 72.19 | 57.48 | a | 47.89 | 36.23 | 27.42 | 47.59 | ||||||||||
1972 | 22.94 | 33.45 | 42.11 | 46.62 | 55.08 | 68.20 | 69.92 | 70.29 | 60.48 | 48.75 | a | 28.42 | 18.47 | a | 47.06 | |||||||||||
1973 | 24.34 | 30.30 | 36.87 | 42.35 | 53.55 | a | 65.07 | 69.23 | 69.66 | 58.38 | 51.29 | 34.27 | 28.73 | 47.00 | ||||||||||||
1974 | 21.71 | 33.54 | 41.44 | 45.93 | a | 58.80 | a | 66.72 | 73.24 | 68.50 | 57.93 | 52.39 | d | 36.50 | a | 27.71 | 48.70 | |||||||||
1975 | 27.78 | a | 31.33 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.78 | k |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 52.50 | 63.83 | a | 72.53 | 70.26 | d | ----- | z | ----- | z | ----- | z | ----- | z | 64.78 | h | ||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | d | 67.50 | h | 63.47 | o | 48.05 | l | ----- | z | ----- | z | 73.00 | k |
1978 | 18.23 | g | ----- | z | 47.17 | s | 48.38 | i | 52.52 | g | 64.15 | f | 74.02 | j | 68.71 | n | 60.96 | g | 46.28 | h | 29.97 | o | 16.59 | n | ----- | z |
1979 | 14.78 | v | 29.70 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.91 | a | 75.25 | a | 69.75 | a | 61.96 | c | 47.47 | a | 37.23 | d | 35.88 | e | 56.64 | e |
1981 | 31.31 | b | 32.45 | 38.09 | b | 53.71 | d | 53.97 | a | 68.40 | f | 73.38 | a | 68.82 | 64.09 | b | 48.03 | 40.59 | b | 28.68 | a | 48.47 | a | |||
1982 | 18.41 | t | 38.06 | k | 37.35 | 45.09 | b | 54.56 | ----- | z | 71.60 | 71.87 | 59.85 | q | 47.78 | a | 32.43 | a | 27.90 | a | 48.57 | d | ||||
1983 | 32.55 | c | 34.30 | a | 37.74 | 39.23 | b | 51.31 | b | 62.38 | 71.17 | b | 73.26 | 62.27 | 50.50 | a | 34.90 | a | 12.98 | b | 46.88 | |||||
1984 | 21.57 | a | 31.74 | b | 36.76 | b | 40.75 | 58.45 | 64.97 | a | 73.50 | 71.74 | 58.98 | a | 46.00 | a | 38.71 | b | 27.35 | 47.54 | ||||||
1985 | 21.90 | b | 25.41 | 40.50 | a | 48.64 | a | 59.26 | 64.85 | 70.89 | 70.58 | 58.75 | b | ----- | z | 27.98 | h | 19.73 | k | 51.20 | c | |||||
1986 | 31.77 | c | 32.35 | a | 44.21 | 48.00 | b | 54.55 | b | 68.71 | a | 70.98 | a | 69.15 | a | 59.13 | 50.11 | h | 36.04 | b | 27.18 | 49.28 | a | |||
1987 | 29.95 | c | 34.83 | a | 36.15 | d | 49.81 | a | 58.89 | 65.98 | a | 72.44 | 68.85 | 60.17 | 47.13 | 36.13 | 25.60 | f | 50.94 | a | ||||||
1988 | 10.04 | r | 31.69 | e | 36.04 | c | 47.03 | a | 57.28 | f | 69.43 | a | 71.69 | 71.44 | 60.10 | a | 51.40 | 35.74 | a | 25.96 | c | 50.05 | b | |||
1989 | 29.23 | a | 20.43 | 40.06 | 48.98 | 59.08 | 64.55 | 74.18 | 69.06 | 58.76 | c | 48.50 | 38.41 | a | 22.55 | 47.82 | ||||||||||
1990 | 29.97 | 29.43 | 37.50 | a | 46.87 | d | 53.92 | 69.81 | a | 68.90 | 68.76 | 64.04 | e | 48.90 | a | 38.25 | 20.02 | 48.03 | ||||||||
1991 | 23.23 | 35.45 | 38.89 | 46.58 | 58.71 | 67.40 | 70.74 | 70.29 | 61.47 | 48.42 | a | 32.00 | a | 29.74 | 48.58 | |||||||||||
1992 | 28.32 | 37.21 | 42.03 | b | 51.57 | 58.06 | 64.57 | 69.16 | 66.85 | 62.22 | a | 50.74 | 29.65 | 16.98 | a | 48.11 | ||||||||||
1993 | 17.98 | a | 23.15 | a | 40.02 | 46.40 | 57.35 | 64.48 | a | 70.84 | 68.35 | 58.78 | 47.03 | a | 29.08 | 28.81 | 46.02 | |||||||||
1994 | 30.37 | a | 25.20 | 41.33 | a | 47.62 | 59.95 | 71.02 | 71.45 | 72.27 | 63.97 | 49.80 | a | 34.78 | 31.56 | 49.94 | ||||||||||
1995 | 28.45 | a | 34.06 | a | 38.74 | 42.73 | 51.42 | 62.72 | 70.62 | a | 73.44 | 60.76 | a | 47.77 | 39.05 | a | 30.03 | a | 48.32 | |||||||
1996 | 24.53 | a | 30.95 | 35.58 | 48.32 | b | 58.55 | 67.73 | 71.58 | 70.34 | 60.31 | c | 49.90 | 35.58 | 29.77 | 48.60 | ||||||||||
1997 | 24.24 | 30.56 | a | 40.45 | 40.85 | c | 56.38 | a | 67.13 | 72.95 | 70.73 | 63.72 | 49.08 | a | 34.23 | 29.18 | 48.29 | |||||||||
1998 | 30.10 | 34.36 | 37.42 | 46.83 | 59.23 | a | 62.95 | 73.90 | a | 71.41 | b | 66.98 | 50.25 | a | 40.67 | 24.79 | b | 49.91 | ||||||||
1999 | 33.34 | 37.64 | 41.90 | 44.55 | a | 56.11 | 66.15 | 74.47 | 68.70 | u | 57.37 | d | 49.98 | 41.68 | 32.92 | 48.74 | a | |||||||||
2000 | 31.24 | 37.16 | 41.03 | a | 49.53 | 60.21 | 66.20 | 75.32 | 73.80 | a | 62.29 | a | 49.85 | 27.83 | 25.08 | 49.96 | ||||||||||
2001 | 27.84 | 26.82 | 38.42 | 50.05 | a | 57.56 | 68.45 | 76.44 | 72.98 | 64.30 | 49.60 | 39.40 | 30.52 | b | 50.20 | |||||||||||
2002 | 27.80 | a | 30.54 | 34.45 | 50.82 | 57.58 | 72.75 | b | 76.68 | 72.56 | 63.05 | 43.55 | 35.47 | 31.32 | a | 49.71 | ||||||||||
2003 | 34.45 | 27.96 | a | 41.00 | 50.82 | 58.18 | 60.05 | 70.98 | e | 73.85 | a | 59.91 | a | 53.42 | 34.55 | a | 28.76 | 49.49 | ||||||||
2004 | 28.27 | 28.97 | 44.63 | 48.50 | b | 59.35 | a | 63.73 | 70.77 | a | 67.67 | b | 62.34 | a | 50.65 | 34.68 | 29.57 | a | 49.09 | |||||||
2005 | 30.74 | 33.93 | 38.78 | b | 47.18 | 56.79 | 65.54 | b | 74.85 | 70.18 | 62.62 | a | 49.21 | 39.65 | c | 25.50 | a | 49.58 | ||||||||
2006 | 32.82 | 27.12 | 34.32 | 47.81 | c | 57.61 | 70.60 | a | 71.39 | q | 68.04 | q | 57.29 | b | 46.73 | a | 34.86 | a | 24.69 | 43.39 | b | |||||
2007 | 14.66 | 26.07 | 42.77 | 44.13 | 58.10 | a | 67.52 | b | 77.23 | a | 74.10 | b | 62.90 | 50.32 | a | 35.40 | a | 18.03 | b | 47.60 | ||||||
2008 | 18.79 | 30.28 | 37.23 | a | 43.03 | 55.06 | 63.79 | i | 74.98 | 69.45 | 59.48 | 49.50 | e | 39.47 | 22.03 | 45.39 | a | |||||||||
2009 | 28.71 | 33.11 | 36.53 | 43.65 | 56.58 | 62.85 | 70.34 | 68.27 | 60.81 | a | 40.26 | 37.30 | 18.47 | 46.41 | ||||||||||||
2010 | 25.63 | 25.54 | 37.81 | 46.53 | 52.45 | 66.78 | 73.10 | 71.90 | 62.75 | 50.98 | 33.55 | 29.68 | 48.06 | |||||||||||||
2011 | 24.31 | 23.36 | 39.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.15 | i | |||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.12 | w | 68.34 | 64.07 | c | 46.26 | b | 33.88 | 26.81 | 47.87 | g | |||
2019 | 26.42 | 23.29 | 32.34 | 47.47 | 50.02 | a | 63.35 | 74.08 | 71.71 | 65.35 | 40.48 | 32.70 | 25.07 | a | 46.02 | |||||||||||
2020 | 30.68 | a | 25.24 | 38.90 | 45.38 | d | 57.31 | 68.43 | 73.61 | 74.18 | 60.37 | 43.32 | a | 38.68 | 29.03 | 48.76 | ||||||||||
2021 | 28.15 | 21.91 | 35.89 | 42.07 | 55.40 | a | 69.02 | 73.97 | 71.39 | 64.58 | 50.27 | 40.48 | 33.21 | 48.86 | ||||||||||||
2022 | 24.02 | 23.52 | 37.19 | 44.92 | 55.61 | 68.30 | 74.77 | 73.06 | 64.90 | 49.44 | 31.05 | 24.97 | 47.65 | |||||||||||||
2023 | 22.21 | 24.05 | 32.97 | a | 42.07 | i | 58.00 | h | 64.21 | a | 70.32 | 71.12 | e | 63.03 | a | 48.55 | c | 37.30 | 32.29 | 46.61 | b | |||||
2024 | 22.97 | 32.55 | 38.16 | 45.69 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.23 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.95 | 29.81 | 37.86 | 46.45 | 56.31 | 65.99 | 72.76 | 70.84 | 61.38 | 48.71 | 36.02 | 26.79 | 48.25 | |||||||||||||
S.D. | 4.46 | 4.63 | 3.52 | 3.20 | 2.65 | 2.78 | 2.19 | 1.95 | 2.70 | 3.46 | 3.47 | 4.72 | 1.14 | |||||||||||||
SKEW | -0.57 | -0.15 | -0.46 | -0.17 | -0.63 | 0.13 | 0.27 | -0.02 | -0.17 | -0.64 | -0.53 | -0.90 | -0.12 | |||||||||||||
MAX | 34.45 | 37.64 | 44.63 | 53.71 | 60.21 | 72.75 | 77.23 | 74.18 | 66.98 | 56.24 | 41.68 | 35.88 | 50.20 | |||||||||||||
MIN | 14.66 | 20.43 | 28.24 | 39.23 | 50.02 | 60.05 | 68.90 | 66.85 | 54.22 | 39.81 | 27.83 | 12.98 | 46.02 | |||||||||||||
YRS | 45 | 45 | 46 | 45 | 45 | 45 | 46 | 45 | 46 | 45 | 45 | 44 | 32 |