YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.57 | 76.34 | 72.06 | 63.90 | 51.40 | 47.78 | 32.55 | b | 58.94 | e | ||||||
1950 | 26.14 | c | 36.89 | 36.13 | 47.52 | a | 55.48 | a | 70.21 | a | 71.44 | 70.02 | 62.29 | a | 60.75 | e | 38.48 | a | 33.68 | a | 50.75 | |||||
1951 | 28.05 | a | 32.28 | a | 34.30 | a | 44.42 | 59.44 | 63.12 | 72.83 | a | 73.55 | 61.62 | 50.66 | 35.70 | 27.29 | 48.60 | |||||||||
1952 | 30.03 | 33.34 | 32.34 | 48.97 | 58.76 | 75.55 | 76.31 | 76.05 | 67.53 | 52.40 | 35.23 | 25.48 | 51.00 | |||||||||||||
1953 | 35.85 | 32.52 | 43.34 | 44.00 | 56.19 | 73.60 | 77.27 | 73.89 | 68.80 | 56.69 | 40.47 | 28.02 | 52.55 | |||||||||||||
1954 | 29.31 | 42.76 | i | 35.78 | a | 54.79 | a | 55.66 | 73.02 | 81.56 | 76.95 | 70.62 | 51.76 | 44.22 | 33.06 | 55.16 | a | |||||||||
1955 | 26.57 | a | 26.75 | 36.45 | 52.24 | a | 61.39 | 65.67 | 80.47 | 78.73 | 67.03 | 56.11 | 34.82 | 29.68 | 51.32 | |||||||||||
1956 | 30.56 | 26.66 | 40.08 | a | 46.58 | 62.27 | 76.93 | 75.39 | 73.03 | 67.32 | 57.53 | 36.35 | 34.77 | 52.29 | ||||||||||||
1957 | 22.02 | a | 36.30 | 36.19 | 43.88 | 55.73 | 66.93 | 76.35 | d | 74.74 | 62.63 | 51.87 | 37.13 | 36.81 | 50.05 | |||||||||||
1958 | 31.05 | 32.52 | 27.65 | 45.98 | 62.92 | 68.85 | 72.05 | 74.63 | 67.22 | 53.23 | 39.78 | 32.63 | 50.71 | |||||||||||||
1959 | 26.53 | 28.34 | 36.85 | 46.62 | 58.82 | 74.31 | a | 73.35 | 77.42 | 62.78 | 47.79 | 35.25 | 34.79 | 50.24 | ||||||||||||
1960 | 23.69 | 19.34 | 30.77 | 51.60 | 57.66 | 67.92 | 73.77 | 75.02 | 66.03 | 54.03 | 40.47 | 29.76 | 49.17 | |||||||||||||
1961 | 29.23 | 34.46 | 38.45 | 44.77 | 55.74 | 68.60 | 74.71 | 74.48 | a | 59.22 | 51.53 | 34.55 | 25.77 | 49.29 | ||||||||||||
1962 | 22.00 | 33.98 | 35.06 | 51.10 | 63.34 | 66.83 | 74.16 | 74.13 | 63.25 | 54.66 | 41.72 | 33.88 | a | 51.18 | ||||||||||||
1963 | 16.79 | 37.00 | 39.65 | 52.65 | 62.40 | 72.90 | 79.87 | 75.63 | 68.25 | 60.34 | 41.83 | 25.13 | 52.70 | |||||||||||||
1964 | 31.87 | 28.40 | 33.05 | 46.43 | 59.98 | 66.85 | 79.06 | 71.94 | 64.35 | 52.69 | 38.68 | 29.84 | 50.26 | |||||||||||||
1965 | 33.02 | 28.06 | a | 26.90 | 52.93 | a | 60.94 | 67.20 | 75.15 | a | 71.21 | 54.90 | 55.13 | 43.93 | 33.77 | 50.26 | ||||||||||
1966 | 22.00 | 25.36 | 41.37 | 46.37 | 60.92 | 68.65 | 78.84 | 70.23 | a | 64.58 | 50.76 | 39.26 | e | 27.87 | 49.68 | |||||||||||
1967 | 32.39 | 33.20 | 43.33 | a | 49.82 | 53.50 | a | 64.52 | 72.39 | 71.29 | 61.97 | 53.42 | 37.97 | 26.31 | 50.01 | |||||||||||
1968 | 27.98 | 32.36 | 40.44 | 45.12 | 53.88 | a | 70.32 | 74.08 | 69.12 | a | 63.55 | 53.63 | 37.50 | a | 24.98 | a | 49.41 | |||||||||
1969 | 28.69 | 32.36 | 31.08 | 51.88 | 60.85 | 63.93 | 77.35 | 75.77 | 67.26 | a | 44.60 | 39.42 | 33.26 | 50.54 | ||||||||||||
1970 | 28.15 | 36.72 | a | 33.24 | 45.70 | 62.15 | a | 67.55 | 76.50 | 76.31 | 63.07 | b | 47.66 | 37.60 | 32.68 | 50.61 | ||||||||||
1971 | 28.84 | 29.52 | 38.29 | 48.45 | 55.10 | 71.22 | 71.95 | 74.56 | 60.24 | a | 51.64 | b | 38.43 | 31.25 | a | 49.96 | ||||||||||
1972 | 26.40 | 34.84 | 45.08 | 49.84 | a | 58.76 | 70.02 | 71.97 | 72.18 | 63.67 | 50.42 | e | 31.20 | g | 21.11 | 51.30 | a | |||||||||
1973 | 26.65 | 32.39 | 40.29 | 43.83 | a | 56.45 | a | 68.53 | a | 73.20 | a | 75.40 | a | 60.80 | 53.61 | 38.37 | 29.69 | 49.93 | ||||||||
1974 | 21.39 | 34.57 | 40.60 | 48.72 | 61.90 | 68.53 | 77.47 | a | 68.75 | a | 59.28 | 53.11 | 38.02 | 28.27 | 50.05 | |||||||||||
1975 | 27.56 | 28.05 | 34.87 | 52.96 | f | 57.13 | 66.32 | 75.10 | a | 73.66 | 61.03 | 52.29 | 35.83 | i | 31.27 | 50.73 | b | |||||||||
1976 | 27.15 | 38.43 | 36.53 | 50.28 | 55.57 | b | 68.23 | 75.05 | b | 73.25 | a | 63.20 | b | 46.94 | 35.93 | 32.15 | 50.23 | |||||||||
1977 | 19.82 | 37.00 | 37.24 | b | 50.92 | 61.48 | 71.92 | 76.92 | a | 71.32 | 67.12 | 53.27 | 40.17 | 32.50 | 51.64 | |||||||||||
1978 | 19.94 | 22.09 | 33.53 | p | 48.21 | r | 58.80 | h | 69.85 | 77.77 | 71.76 | 74.05 | t | 52.20 | c | 38.27 | o | 23.71 | q | 52.27 | f | |||||
1979 | ----- | z | ----- | z | ----- | z | 52.92 | l | 54.08 | l | 69.30 | j | 75.39 | h | 70.20 | d | 65.96 | e | 55.03 | 32.70 | b | 37.38 | o | 55.97 | h | |
1980 | 24.19 | b | 31.74 | 33.74 | 44.80 | 56.76 | 70.48 | 78.17 | a | 73.73 | 65.30 | 50.84 | c | 41.79 | f | 37.02 | b | 51.52 | a | |||||||
1981 | 35.00 | j | 32.46 | 39.08 | 55.05 | 55.19 | 70.23 | 74.81 | 71.21 | 66.58 | 51.81 | 42.62 | 33.37 | 53.86 | a | |||||||||||
1982 | 25.55 | 29.16 | ----- | z | 47.45 | b | 57.61 | 63.23 | 73.08 | a | 74.03 | b | 63.86 | b | 49.57 | i | 35.30 | h | 29.76 | 51.53 | c | |||||
1983 | 29.26 | 34.41 | 35.82 | c | 42.97 | a | 54.14 | c | 64.55 | b | 76.15 | 78.70 | c | 69.08 | f | 52.59 | d | 39.25 | b | 15.02 | c | 47.53 | a | |||
1984 | 23.76 | 32.88 | h | 36.62 | g | 41.74 | c | 58.71 | c | 67.61 | k | 74.98 | 75.02 | 60.44 | c | 52.26 | l | 38.56 | d | 26.64 | f | 53.32 | e | |||
1985 | 23.82 | a | 24.87 | b | 41.08 | a | 50.63 | 59.81 | 65.52 | c | 74.33 | g | 73.88 | w | 63.19 | q | 48.57 | i | 30.66 | k | 24.88 | k | 44.29 | f | ||
1986 | 36.76 | j | 31.42 | i | 44.33 | k | 54.14 | l | 60.00 | l | 70.31 | l | 77.18 | t | 73.28 | o | 64.25 | n | 53.20 | i | 38.15 | m | 25.95 | t | ----- | z |
1987 | 32.66 | l | 37.88 | h | 36.02 | k | 48.40 | j | 61.45 | l | 69.22 | n | 76.71 | s | 72.20 | u | 62.18 | m | 52.63 | l | 41.18 | m | 32.81 | w | ----- | z |
1988 | 21.75 | k | 29.00 | k | ----- | z | 49.20 | h | 59.17 | j | 71.59 | s | 74.93 | q | 75.97 | l | 62.39 | k | 52.91 | n | 43.78 | u | 32.42 | y | ----- | z |
1989 | 33.45 | k | 22.45 | i | 41.24 | j | 48.44 | l | 58.67 | v | 66.65 | m | 76.00 | j | 72.61 | v | 61.86 | i | 50.81 | j | ----- | z | 30.94 | w | ----- | z |
1990 | 32.40 | g | 31.73 | 41.84 | 51.15 | 55.31 | 72.28 | a | 73.34 | b | 72.35 | 68.09 | a | 51.48 | c | 41.55 | 26.10 | b | 53.20 | a | ||||||
1991 | 26.24 | 39.57 | 41.62 | b | 49.33 | 60.81 | b | 71.32 | b | 73.97 | 72.60 | a | 64.02 | a | 52.53 | 36.06 | c | 33.03 | 51.76 | |||||||
1992 | 29.37 | 39.67 | 44.34 | 51.69 | a | 60.30 | c | 65.95 | a | 71.43 | a | 69.02 | b | 65.20 | c | 53.32 | a | 34.82 | 24.15 | 50.77 | ||||||
1993 | 23.35 | 24.11 | f | 41.02 | e | 45.11 | g | 59.39 | l | 67.05 | j | 73.16 | f | 70.97 | b | 58.87 | d | 51.84 | f | 34.79 | m | 33.19 | e | 45.48 | g | |
1994 | 30.46 | e | 24.91 | f | 41.15 | g | 47.85 | f | 63.39 | d | 73.02 | e | 72.30 | f | 75.34 | b | 65.88 | d | 52.90 | a | 36.35 | g | 35.11 | c | 56.59 | e |
1995 | 32.54 | c | 37.61 | a | 37.54 | f | 44.84 | b | 51.62 | f | 66.14 | a | 73.24 | d | 76.78 | b | 62.86 | e | 49.63 | e | 41.70 | c | 32.34 | 51.77 | b | |
1996 | ----- | z | 34.40 | 36.08 | a | 50.58 | e | 58.87 | a | 70.20 | 73.69 | 71.68 | 60.62 | d | 52.03 | 34.39 | b | 29.68 | a | 52.02 | a | |||||
1997 | 26.76 | 30.61 | a | 42.89 | d | 43.02 | b | 57.95 | 70.28 | 75.37 | 72.18 | 65.16 | e | 51.78 | a | 36.88 | a | 29.57 | b | 50.20 | ||||||
1998 | 30.77 | 36.05 | 37.13 | a | 46.85 | 62.11 | 67.18 | 76.18 | 72.97 | 70.05 | 52.40 | 42.02 | 29.89 | 51.97 | ||||||||||||
1999 | 32.84 | 39.86 | 42.10 | 47.15 | 58.63 | 68.28 | 77.94 | 74.05 | 61.42 | 52.68 | 45.72 | 34.85 | 52.96 | |||||||||||||
2000 | 31.97 | 40.19 | b | 41.95 | 51.30 | 62.35 | 69.67 | 77.44 | 78.19 | 66.73 | 53.40 | 31.47 | 26.10 | 52.56 | ||||||||||||
2001 | 30.29 | 28.57 | 39.26 | 51.05 | b | 60.40 | 72.28 | e | 78.80 | a | 75.87 | a | 65.78 | 52.79 | 42.97 | 33.37 | 52.62 | |||||||||
2002 | 30.94 | 32.96 | 32.92 | f | 51.66 | a | 58.19 | 76.53 | 79.29 | 74.94 | 64.98 | 47.06 | 39.77 | 34.47 | 53.71 | a | ||||||||||
2003 | 33.63 | 28.23 | 42.06 | 52.47 | 59.45 | 67.25 | 78.90 | 77.24 | 63.73 | 56.93 | d | 38.69 | a | 33.18 | 52.65 | |||||||||||
2004 | 31.72 | a | 32.77 | a | 46.68 | a | 51.08 | 61.87 | 68.64 | i | 72.55 | k | 68.98 | 66.20 | 51.90 | a | 37.72 | a | 33.30 | c | 48.22 | b | ||||
2005 | 30.27 | 36.68 | 41.34 | 49.73 | 59.63 | 70.20 | 77.79 | 73.65 | ----- | z | 52.52 | 44.79 | a | 30.45 | 51.55 | a | ||||||||||
2006 | 37.90 | 31.25 | 39.65 | 52.98 | a | 62.13 | 73.67 | 78.73 | 74.00 | 60.14 | a | 51.00 | a | 40.20 | 31.39 | 52.75 | ||||||||||
2007 | 18.03 | 24.16 | 46.66 | 46.57 | 61.31 | 69.53 | 76.65 | a | 77.18 | 67.50 | 54.63 | a | 41.03 | 24.02 | 50.61 | |||||||||||
2008 | 25.12 | a | 31.16 | 39.93 | a | 46.33 | 57.87 | 69.10 | 78.10 | 71.65 | 62.82 | 51.85 | 42.67 | a | 26.79 | 50.28 | ||||||||||
2009 | 32.32 | 36.32 | 40.61 | 46.80 | 59.03 | 67.15 | 72.32 | 71.56 | 61.80 | 42.61 | 42.48 | 23.68 | 49.72 | |||||||||||||
2010 | 30.40 | 28.07 | 39.94 | 51.13 | 55.92 | 71.18 | 75.11 | 74.69 | 66.77 | 54.87 | 38.40 | 33.63 | 51.68 | |||||||||||||
2011 | 26.86 | c | 26.30 | 39.90 | 51.03 | a | 55.37 | 72.03 | 79.76 | 77.27 | 63.65 | f | 53.48 | 39.12 | 27.54 | g | 52.11 | b | ||||||||
2012 | 32.94 | ----- | z | 49.15 | 56.33 | 62.94 | 77.40 | 81.02 | 75.77 | a | 66.53 | 50.87 | 42.82 | 28.84 | 56.78 | a | ||||||||||
2013 | 29.98 | 30.86 | 36.78 | f | 43.33 | a | 62.10 | 74.77 | 75.40 | a | 75.66 | 69.59 | a | 49.77 | 38.97 | 29.08 | 52.68 | a | ||||||||
2014 | 30.60 | 24.32 | 40.31 | e | 51.52 | 60.11 | 69.30 | 76.44 | 74.40 | 66.37 | 59.65 | 39.02 | j | 34.73 | a | 53.43 | a | |||||||||
2015 | 32.63 | 36.12 | 45.87 | e | 54.91 | a | 57.11 | 71.47 | 72.68 | 72.22 | a | 69.38 | 53.30 | d | 40.07 | ----- | z | 55.07 | a | |||||||
2016 | 30.78 | a | 36.43 | 45.31 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.33 | ----- | z | 46.18 | ----- | z | 45.21 | g | ||||
2017 | 28.83 | a | 42.88 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.85 | j | |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | 58.32 | 74.50 | 76.00 | 75.92 | 63.87 | ----- | z | 44.28 | 32.98 | b | 60.84 | e | ||||||
2021 | 30.53 | 22.48 | 41.98 | 46.10 | 58.50 | 72.24 | i | 75.68 | 74.95 | 69.88 | 53.45 | 43.73 | 37.50 | 50.44 | a | |||||||||||
2022 | 28.73 | 28.48 | 37.73 | a | 48.73 | 59.40 | 71.92 | 78.53 | 74.58 | 68.22 | 53.29 | 36.35 | 26.40 | 51.03 | ||||||||||||
2023 | 24.42 | 27.45 | 35.23 | 48.52 | 60.95 | 67.73 | 74.18 | 75.05 | 68.25 | 52.06 | 42.02 | 34.90 | 50.90 | |||||||||||||
2024 | 23.58 | 39.62 | c | 41.20 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.80 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.98 | 32.12 | 38.93 | 48.74 | 58.98 | 69.69 | 75.87 | 73.81 | 64.66 | 52.53 | 39.48 | 30.43 | 50.87 | |||||||||||||
S.D. | 4.26 | 5.04 | 4.55 | 3.47 | 2.68 | 3.35 | 2.56 | 2.45 | 3.23 | 3.15 | 3.44 | 4.25 | 1.14 | |||||||||||||
SKEW | -0.45 | -0.24 | -0.37 | 0.01 | -0.21 | 0.24 | 0.16 | -0.14 | -0.41 | -0.17 | 0.09 | -0.96 | 0.29 | |||||||||||||
MAX | 37.90 | 42.88 | 49.15 | 56.33 | 63.39 | 77.40 | 81.56 | 78.73 | 70.62 | 60.75 | 47.78 | 37.50 | 52.96 | |||||||||||||
MIN | 16.79 | 19.34 | 26.90 | 41.74 | 53.50 | 63.12 | 71.43 | 68.75 | 54.90 | 42.61 | 31.47 | 15.02 | 48.60 | |||||||||||||
YRS | 64 | 62 | 59 | 60 | 62 | 62 | 62 | 66 | 63 | 62 | 59 | 61 | 40 |