YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.62 | g | 68.66 | 66.00 | 49.61 | 42.65 | 26.68 | 50.72 | g | |||||
1950 | 32.52 | 39.30 | 42.06 | e | 49.17 | a | ----- | z | 63.87 | 72.29 | 68.03 | 60.55 | 57.00 | 42.25 | 35.23 | 51.11 | a | |||||||||
1951 | 30.13 | 33.30 | 37.65 | 47.47 | 55.85 | 61.33 | 73.21 | 70.56 | 62.12 | 51.58 | 38.47 | 31.42 | 49.42 | |||||||||||||
1952 | 34.42 | 32.48 | 34.03 | 49.25 | 56.94 | 64.75 | 71.03 | a | 71.69 | 63.83 | 55.43 | p | 30.11 | b | 31.68 | 49.11 | a | |||||||||
1953 | 35.32 | 31.68 | 41.94 | 46.45 | 51.13 | 65.65 | 72.87 | 68.82 | 62.02 | a | 49.06 | 38.38 | 23.15 | a | 48.87 | |||||||||||
1954 | 29.03 | 35.59 | 39.48 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.83 | 54.44 | 44.10 | a | 32.92 | a | 43.06 | e | ||||
1955 | 28.90 | 30.94 | a | 40.84 | c | 47.83 | 54.39 | l | ----- | z | ----- | z | ----- | z | 63.30 | g | 55.73 | c | 41.72 | e | 34.17 | j | 41.00 | f | ||
1956 | 39.31 | 30.17 | 41.67 | b | 47.89 | b | 55.73 | p | ----- | z | ----- | z | ----- | z | 65.96 | d | ----- | z | ----- | z | ----- | z | 45.00 | g | ||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | 54.91 | d | 62.78 | 72.35 | a | 72.15 | 61.90 | 56.17 | a | 44.85 | 36.42 | 57.69 | d | |||||
1966 | 29.87 | 31.82 | 43.34 | 51.40 | 61.50 | 67.85 | 75.63 | 71.52 | 65.40 | 53.76 | 46.03 | a | 31.57 | a | 52.47 | |||||||||||
1967 | 26.13 | 37.84 | 45.29 | b | 47.40 | 55.97 | 64.58 | 74.61 | 70.10 | a | 64.47 | 52.63 | 44.28 | 23.94 | 50.60 | |||||||||||
1968 | 26.68 | 41.38 | a | 42.42 | 47.10 | 56.32 | 66.78 | 71.98 | 68.52 | 62.54 | b | 53.50 | 40.18 | 27.98 | a | 50.45 | ||||||||||
1969 | 35.06 | 36.09 | 37.40 | 49.43 | 58.40 | 64.87 | 74.39 | 74.48 | 66.70 | 50.87 | 41.40 | 39.06 | f | 53.55 | a | |||||||||||
1970 | 31.78 | a | 40.12 | 38.89 | 42.98 | 57.61 | 67.10 | 74.74 | 73.50 | 62.77 | 48.58 | a | 42.48 | 35.05 | b | 51.30 | ||||||||||
1971 | 30.82 | 33.89 | 42.35 | 48.25 | 55.00 | 66.50 | 73.95 | 71.68 | 63.38 | 50.37 | 41.47 | 28.79 | b | 50.54 | ||||||||||||
1972 | 32.90 | 37.52 | 46.73 | 47.45 | 56.71 | 66.17 | 74.53 | 71.02 | 65.09 | a | 54.16 | ----- | z | 31.34 | b | 53.06 | a | |||||||||
1973 | 29.19 | 37.82 | ----- | z | 44.31 | a | 56.76 | 65.53 | 72.05 | 71.58 | 62.62 | 53.87 | 41.63 | 34.26 | b | 51.78 | a | |||||||||
1974 | 31.52 | 34.02 | 44.03 | 47.42 | 58.72 | a | 70.98 | 72.40 | 69.95 | 63.75 | 55.39 | 41.87 | 30.97 | 51.75 | ||||||||||||
1975 | 29.61 | 34.50 | 39.98 | 43.38 | 52.97 | a | 63.85 | 72.03 | 70.81 | 63.87 | 53.73 | 38.87 | 28.92 | l | 51.24 | a | ||||||||||
1976 | 32.74 | 40.81 | 40.50 | 48.85 | 58.60 | 66.48 | a | ----- | z | 70.66 | 64.65 | 50.32 | a | 40.88 | 33.55 | b | 49.82 | a | ||||||||
1977 | 25.15 | 37.27 | 38.90 | 49.93 | 54.24 | 68.57 | 73.52 | 68.63 | 64.47 | 54.89 | 42.33 | 37.75 | a | 51.30 | ||||||||||||
1978 | 34.07 | a | 36.45 | 44.57 | a | 50.72 | a | 55.94 | 69.69 | c | 74.28 | a | 69.90 | a | 64.45 | a | 55.78 | a | 43.27 | 26.36 | b | 52.12 | ||||
1979 | 27.34 | 32.96 | a | 39.60 | 47.59 | b | 54.79 | b | 64.68 | 70.42 | 68.29 | 67.00 | a | 55.98 | b | 37.29 | a | 34.12 | c | 50.01 | ||||||
1980 | 32.89 | 38.06 | c | 40.13 | 50.04 | b | 55.25 | c | 66.93 | a | 73.23 | c | 69.79 | b | 63.43 | b | 51.77 | 42.33 | f | 38.02 | d | 52.69 | a | |||
1981 | 38.15 | a | 37.91 | 40.63 | 53.82 | b | 57.35 | a | 69.10 | a | 73.92 | 72.38 | b | 64.95 | 53.48 | c | 44.32 | 36.78 | a | 53.57 | ||||||
1982 | 30.85 | 36.80 | 42.43 | d | 48.63 | 56.34 | b | 63.60 | a | 71.96 | d | 72.50 | c | 66.02 | a | 50.90 | 41.77 | 32.66 | c | 51.21 | ||||||
1983 | 33.65 | a | 38.18 | c | 42.13 | a | 43.93 | a | 55.23 | 63.72 | 72.48 | 74.26 | f | 67.22 | e | 55.00 | 40.93 | c | 38.06 | f | 51.25 | b | ||||
1984 | 33.32 | c | 33.82 | g | 39.37 | h | 45.48 | e | 64.08 | k | 68.11 | h | 73.25 | c | 71.20 | f | 65.20 | c | 47.60 | e | 42.67 | c | 35.84 | f | 51.25 | f |
1985 | 33.88 | a | 34.05 | 44.66 | f | 52.23 | 57.45 | b | 69.34 | a | 74.07 | c | 72.48 | b | 62.26 | c | 55.15 | 42.70 | h | 38.39 | v | 56.77 | c | |||
1986 | 41.21 | j | 40.98 | b | 45.42 | l | ----- | z | 63.61 | q | 70.08 | 72.55 | a | 74.27 | a | 63.02 | a | 51.54 | d | 43.43 | g | 35.57 | b | 58.29 | e | |
1987 | 28.46 | d | 36.14 | c | 40.16 | b | 52.07 | 58.55 | a | 68.76 | a | 70.83 | b | 71.53 | 62.77 | d | 57.07 | c | 41.68 | b | 31.84 | c | 51.65 | |||
1988 | 29.27 | a | 38.91 | 40.14 | f | 48.66 | e | 58.33 | d | 68.94 | e | 74.21 | b | 72.29 | 63.02 | h | 58.22 | b | 40.84 | a | 32.71 | e | 52.24 | b | ||
1989 | 30.30 | d | 37.86 | 47.36 | f | 54.23 | 60.28 | d | 66.96 | d | 74.72 | a | 71.46 | c | 66.90 | a | 52.72 | d | 41.45 | a | 31.89 | 53.52 | a | |||
1990 | 32.57 | a | 35.57 | 45.42 | f | 54.79 | i | 58.21 | c | 71.76 | a | 74.70 | f | 71.48 | d | 68.39 | c | 54.26 | 43.37 | c | 26.40 | 51.33 | c | |||
1991 | 31.65 | 41.55 | 40.87 | 48.02 | b | 56.71 | c | 65.52 | b | 73.33 | b | 73.77 | e | 65.19 | c | 55.18 | a | 41.52 | b | 33.91 | c | 52.27 | ||||
1992 | 27.37 | 39.43 | b | 44.55 | a | 54.25 | 59.69 | 65.38 | 70.81 | b | 71.55 | a | 65.03 | 55.76 | b | 36.62 | 28.07 | a | 51.54 | |||||||
1993 | 37.64 | c | 38.80 | c | 44.00 | a | 49.72 | 59.43 | c | 65.63 | 71.40 | a | 70.98 | b | 64.57 | a | 52.72 | a | 37.74 | c | 34.89 | c | 52.29 | |||
1994 | 33.09 | d | 35.54 | b | ----- | z | 49.80 | b | 58.50 | 70.43 | 73.52 | b | 76.10 | 66.12 | 51.74 | 39.25 | 37.34 | b | 53.77 | a | ||||||
1995 | 35.95 | b | 43.45 | 45.20 | a | 47.23 | b | 54.35 | 65.13 | 73.21 | 75.95 | a | 66.80 | 53.50 | 47.47 | a | 35.97 | b | 53.68 | |||||||
1996 | 34.98 | a | 41.88 | d | 43.12 | b | 50.62 | e | 61.34 | 69.70 | b | 76.22 | b | 73.92 | 63.16 | a | 52.90 | f | 42.88 | a | 35.92 | 53.98 | a | |||
1997 | 32.45 | b | 37.87 | a | 45.88 | a | 48.38 | a | 61.66 | b | 66.74 | a | 72.65 | 73.60 | 68.65 | 52.87 | a | 43.55 | 31.27 | c | 52.96 | |||||
1998 | 37.23 | a | 34.82 | 42.60 | a | 46.53 | 57.00 | a | 64.85 | 75.87 | 75.18 | 68.27 | 54.31 | 43.72 | 36.77 | c | 53.10 | |||||||||
1999 | 36.21 | b | 39.58 | h | 45.74 | f | 45.47 | l | 56.88 | g | 66.56 | c | 73.75 | a | 71.40 | e | 64.76 | i | 54.98 | d | 48.84 | a | 32.37 | a | 54.87 | e |
2000 | 37.53 | 42.04 | b | 43.18 | a | 54.02 | b | 62.24 | 70.66 | b | 76.32 | 74.12 | a | 68.10 | 54.97 | a | 36.82 | e | 36.32 | 54.69 | ||||||
2001 | 32.78 | b | 38.66 | c | 44.10 | 52.93 | c | 61.95 | a | 68.66 | a | 75.64 | b | 73.06 | 67.96 | f | 56.87 | 44.33 | a | 39.38 | c | 53.49 | a | |||
2002 | 36.40 | a | 39.21 | 43.59 | b | 55.22 | 57.19 | b | 69.88 | 74.84 | o | 73.27 | a | 65.53 | l | 53.20 | c | 43.93 | i | 37.69 | m | 53.49 | d | |||
2003 | 40.00 | a | 36.72 | c | 44.79 | c | 47.04 | g | 58.78 | b | 66.95 | a | 76.17 | e | 73.86 | c | 65.86 | a | 59.23 | g | 42.66 | h | 35.27 | g | 57.89 | d |
2004 | 35.41 | b | 37.90 | e | 52.11 | l | 49.05 | s | 58.61 | l | 67.10 | 72.19 | j | ----- | z | 59.68 | m | 52.68 | a | 43.28 | c | 33.16 | l | 47.27 | g | |
2005 | 43.00 | a | 40.83 | y | 42.58 | e | 49.28 | n | 61.26 | h | 66.54 | g | 74.58 | e | 70.90 | 66.88 | f | 56.48 | e | 42.43 | i | 31.62 | g | 57.51 | g | |
2006 | 34.34 | b | 38.52 | c | 40.88 | n | 52.80 | e | 63.02 | j | 72.10 | i | 75.72 | d | 71.70 | a | 61.52 | b | 53.50 | m | ----- | z | 33.67 | g | 55.77 | f |
2007 | 31.52 | 39.15 | e | 47.25 | i | ----- | z | 59.19 | m | 66.74 | m | 75.67 | e | 74.47 | m | 66.42 | r | 53.59 | o | ----- | z | 33.95 | t | 48.78 | i | |
2008 | 26.74 | n | 35.25 | c | 40.96 | e | ----- | z | 55.69 | j | 67.20 | b | 73.59 | c | 73.15 | k | 64.97 | j | 53.60 | g | 44.12 | i | 35.33 | h | 54.25 | h |
2009 | 35.56 | e | 38.58 | h | 43.62 | a | ----- | z | 61.15 | h | 64.23 | d | ----- | z | 71.38 | c | 64.39 | h | 47.79 | n | 40.75 | f | ----- | z | 53.70 | h |
2010 | 31.09 | b | 34.34 | c | 41.24 | b | 49.32 | b | 54.53 | 66.38 | f | 74.85 | h | 71.28 | f | 66.56 | e | 57.28 | h | 37.36 | h | 39.50 | f | 46.18 | f | |
2011 | 28.73 | e | 33.38 | 43.98 | a | 47.88 | r | 57.11 | m | 68.16 | h | 74.79 | e | 75.75 | s | 67.04 | f | 54.48 | f | 42.04 | c | 33.80 | d | 42.79 | f | |
2012 | 35.81 | o | 34.93 | b | 41.93 | b | 52.82 | 59.90 | a | 69.63 | 73.60 | 73.84 | 65.38 | 53.67 | a | 45.22 | 33.12 | b | 54.91 | a | ||||||
2013 | 29.64 | b | 33.14 | 43.98 | e | 49.40 | a | 57.60 | e | 68.32 | h | 73.74 | 71.65 | 67.07 | c | 50.92 | g | 43.74 | e | 32.26 | b | 50.22 | b | |||
2014 | 32.91 | h | 40.57 | g | 43.66 | 49.70 | 56.89 | d | 66.03 | 75.53 | a | 69.75 | a | 68.27 | b | 56.88 | c | 42.22 | 35.37 | a | 56.43 | b | ||||
2015 | 36.66 | 42.93 | 46.73 | 48.60 | 57.15 | 69.52 | c | 71.55 | b | 73.15 | 66.60 | a | 57.45 | b | 41.72 | 31.83 | d | 53.66 | ||||||||
2016 | 32.90 | a | 40.62 | 45.22 | a | 49.12 | 56.34 | b | 72.20 | 74.30 | c | 70.23 | 65.50 | g | 58.00 | b | 45.72 | a | 38.09 | b | 52.98 | a | ||||
2017 | 35.45 | 42.17 | a | 48.15 | 49.73 | 56.92 | 70.42 | 73.74 | 70.90 | a | 64.53 | 55.23 | 48.02 | 34.50 | f | 55.93 | a | |||||||||
2018 | 37.78 | d | 38.43 | e | 42.85 | a | 53.38 | e | 59.85 | 70.12 | b | 75.23 | a | 72.98 | f | 66.95 | j | 51.07 | q | 39.67 | f | 33.65 | h | 53.95 | e | |
2019 | 32.15 | h | 33.10 | g | 45.53 | l | 50.69 | l | 53.40 | j | 65.77 | 73.52 | 72.42 | 67.85 | m | 53.86 | m | 45.41 | g | 34.92 | a | 61.65 | h | |||
2020 | 34.33 | a | 37.89 | a | 45.08 | 50.22 | 61.63 | 67.76 | g | 74.26 | 74.63 | 65.00 | a | 55.45 | 46.21 | a | 32.50 | a | 52.47 | a | ||||||
2021 | 32.13 | 36.38 | 40.87 | 50.54 | c | 57.90 | a | 70.72 | 73.98 | a | 71.90 | 66.87 | 53.05 | a | 44.91 | a | 38.50 | 53.15 | ||||||||
2022 | 33.77 | 34.04 | 43.79 | 50.20 | 59.05 | 69.48 | 74.72 | a | 71.71 | c | 68.10 | 52.24 | 37.23 | 35.38 | b | 52.48 | ||||||||||
2023 | 32.50 | a | 32.98 | 39.97 | 48.45 | 57.61 | 63.70 | 75.93 | d | 72.98 | b | 65.82 | b | 55.78 | a | 44.17 | 36.30 | a | 52.18 | |||||||
2024 | 32.65 | a | 40.71 | 42.60 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.65 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.89 | 37.05 | 42.38 | 49.33 | 57.52 | 67.15 | 73.70 | 71.83 | 65.04 | 53.85 | 42.09 | 33.13 | 51.89 | |||||||||||||
S.D. | 3.57 | 3.20 | 2.59 | 2.79 | 2.37 | 2.56 | 1.50 | 1.91 | 2.01 | 2.44 | 3.25 | 3.75 | 1.41 | |||||||||||||
SKEW | 0.21 | -0.06 | -0.52 | -0.02 | -0.03 | 0.01 | -0.20 | 0.07 | -0.12 | -0.48 | -0.87 | -0.76 | -0.21 | |||||||||||||
MAX | 43.00 | 43.45 | 48.15 | 55.22 | 62.24 | 72.20 | 76.32 | 76.10 | 68.65 | 58.22 | 48.84 | 39.38 | 54.69 | |||||||||||||
MIN | 25.15 | 30.17 | 34.03 | 42.98 | 51.13 | 61.33 | 70.42 | 68.03 | 60.55 | 47.60 | 30.11 | 23.15 | 48.87 | |||||||||||||
YRS | 61 | 60 | 53 | 53 | 51 | 55 | 57 | 56 | 53 | 54 | 52 | 49 | 25 |