YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | 21.97 | 26.86 | 33.61 | 43.52 | 49.56 | 58.17 | 63.15 | 58.16 | 57.77 | 43.90 | a | 42.50 | l | 29.97 | 44.24 | a | ||||||||||
1950 | 21.98 | 30.39 | 32.21 | 40.97 | 49.08 | 54.03 | 66.06 | 63.15 | 54.20 | 45.74 | 40.62 | a | 37.23 | 44.64 | ||||||||||||
1951 | 27.98 | a | 29.87 | b | 32.74 | 44.22 | 47.31 | 59.47 | 63.31 | 61.65 | 58.80 | 43.40 | 36.58 | 28.77 | 44.51 | |||||||||||
1952 | 25.44 | 30.66 | 28.56 | d | 43.43 | b | 50.19 | 50.77 | 67.34 | 62.58 | 58.18 | b | 54.92 | 35.37 | 29.84 | 44.77 | ||||||||||
1953 | 34.74 | 32.73 | 33.26 | 38.57 | 40.40 | a | 50.40 | 64.11 | 58.45 | 60.40 | 46.61 | 39.84 | a | 34.92 | 44.54 | |||||||||||
1954 | 28.50 | 38.22 | a | 31.90 | 44.07 | 52.02 | 52.04 | b | ----- | z | 57.21 | 52.95 | 46.39 | 41.13 | 30.21 | b | 43.15 | a | ||||||||
1955 | 25.93 | b | 26.33 | e | 30.98 | 31.91 | a | 47.37 | 56.48 | a | 57.90 | f | 62.86 | c | 55.86 | a | 49.47 | 33.77 | 30.32 | 41.03 | a | |||||
1956 | 29.00 | 25.10 | 31.78 | a | 38.22 | 47.19 | 55.52 | 63.13 | 59.31 | 55.37 | 43.19 | 40.78 | 36.65 | a | 43.77 | |||||||||||
1957 | 22.79 | 31.93 | 33.98 | 40.08 | 45.71 | 58.52 | b | 61.10 | 58.23 | 57.43 | 41.39 | 35.42 | 34.21 | c | 43.40 | |||||||||||
1958 | 30.97 | 32.45 | 26.79 | 37.12 | 50.65 | 52.75 | 62.26 | 64.97 | 56.65 | 52.47 | 38.98 | 39.63 | 45.47 | |||||||||||||
1959 | 33.81 | 29.05 | 37.79 | 46.33 | a | 44.31 | 55.35 | 59.68 | 60.90 | 52.43 | 49.69 | 43.83 | 35.81 | 45.75 | ||||||||||||
1960 | 26.52 | 28.22 | 37.15 | a | 38.20 | 45.13 | 61.50 | f | 66.23 | 61.87 | 58.80 | b | 47.66 | 34.63 | 33.76 | 43.47 | a | |||||||||
1961 | 35.88 | a | 32.38 | 30.53 | 40.03 | 43.81 | 60.90 | 64.87 | 62.87 | 53.37 | 47.03 | 36.82 | 30.50 | 44.92 | ||||||||||||
1962 | 31.26 | 28.52 | a | 28.05 | 43.13 | 44.08 | a | 56.93 | 63.40 | 60.94 | 58.25 | 47.24 | 39.45 | 37.78 | a | 44.92 | ||||||||||
1963 | 32.60 | 39.71 | 32.05 | a | 31.17 | 48.00 | 52.77 | 58.18 | 59.31 | 57.30 | 47.69 | 36.35 | 35.85 | 44.25 | ||||||||||||
1964 | 28.87 | 32.79 | 30.19 | 38.18 | 43.55 | 52.32 | 62.97 | 62.24 | 52.97 | 52.06 | 32.16 | a | 31.60 | 43.32 | ||||||||||||
1965 | 31.08 | 32.50 | 35.00 | 39.62 | 45.98 | a | 54.25 | 62.47 | 59.23 | 51.75 | 52.63 | 37.25 | 28.03 | a | 44.15 | |||||||||||
1966 | 26.84 | 25.54 | 33.10 | 44.42 | 53.84 | 55.63 | 59.94 | 65.15 | 56.85 | 49.79 | 38.27 | 31.79 | 45.09 | |||||||||||||
1967 | 32.48 | 34.95 | 30.16 | 27.52 | 45.21 | 53.77 | 63.98 | 65.61 | 59.27 | 47.48 | 42.05 | 27.29 | 44.15 | |||||||||||||
1968 | 29.21 | 35.26 | 35.50 | a | 40.38 | 46.94 | 58.18 | 65.42 | 56.81 | 56.60 | 47.03 | 36.13 | 25.61 | 44.42 | ||||||||||||
1969 | 26.71 | 24.46 | 29.35 | 36.20 | 51.48 | 54.82 | 64.03 | 63.10 | 57.17 | 42.26 | 41.97 | 34.32 | 43.82 | |||||||||||||
1970 | 32.16 | 35.21 | 35.27 | 35.52 | 50.11 | 57.25 | 64.13 | 62.42 | 55.36 | a | 46.42 | 38.85 | 26.35 | 44.92 | ||||||||||||
1971 | 31.26 | 31.84 | 30.77 | 36.87 | 44.35 | 52.70 | 63.85 | 63.95 | 54.15 | 41.79 | 35.90 | 23.97 | 42.62 | |||||||||||||
1972 | 29.00 | a | 30.76 | 39.02 | b | 37.83 | 49.73 | a | 58.74 | a | 65.13 | a | 63.00 | a | 52.48 | 44.43 | a | 33.83 | 26.23 | 44.18 | ||||||
1973 | 26.25 | a | 31.46 | 28.74 | 39.35 | 52.56 | 57.97 | 64.03 | a | 61.05 | 55.07 | 46.35 | 32.63 | 32.31 | 43.98 | |||||||||||
1974 | 27.27 | 28.43 | a | 33.02 | b | 34.37 | 48.44 | 58.15 | 60.92 | 62.32 | 60.93 | 48.92 | 37.18 | 30.52 | 44.21 | |||||||||||
1975 | 30.90 | 29.21 | 29.35 | 29.90 | 45.40 | a | 56.02 | 61.48 | 59.10 | 59.53 | 43.00 | 34.79 | a | 36.08 | 42.90 | |||||||||||
1976 | 34.27 | 31.33 | 31.94 | 35.80 | 49.44 | 52.16 | a | 60.40 | 54.02 | 55.05 | a | 48.90 | 45.03 | 37.65 | 44.67 | |||||||||||
1977 | 33.10 | 37.24 | a | 31.05 | 44.82 | 39.65 | 59.55 | 60.45 | 62.42 | 52.78 | 47.95 | 37.60 | 34.66 | 45.11 | ||||||||||||
1978 | 33.69 | 33.30 | 40.29 | 36.67 | a | 46.71 | 53.00 | 59.52 | 56.95 | 51.52 | 51.90 | 35.00 | 29.08 | 43.97 | ||||||||||||
1979 | 28.61 | 29.50 | b | 37.26 | 38.37 | 49.66 | 55.02 | a | 57.74 | 55.74 | 56.72 | 46.82 | a | 35.54 | b | 35.85 | 43.90 | |||||||||
1980 | 34.31 | 35.81 | 33.13 | 41.53 | 44.85 | 49.08 | 60.40 | 58.98 | 54.93 | 49.21 | 40.78 | 38.74 | 45.15 | |||||||||||||
1981 | 37.05 | b | 34.55 | 36.80 | a | 42.95 | 48.58 | 57.63 | 60.21 | 62.35 | 57.40 | 44.06 | 39.20 | 36.60 | 46.45 | |||||||||||
1982 | 29.09 | d | 33.18 | c | 31.55 | a | 36.04 | d | 49.95 | a | 53.81 | a | 58.26 | 59.73 | 52.40 | a | 44.23 | 34.30 | b | 30.81 | b | 42.78 | ||||
1983 | 35.15 | a | 33.35 | a | 34.84 | 35.16 | a | 48.08 | 53.45 | 55.45 | 58.67 | a | 54.83 | a | 48.27 | 34.20 | 31.29 | 43.56 | ||||||||
1984 | 35.97 | 33.54 | b | 38.65 | 38.13 | 50.26 | b | 53.52 | 64.10 | 60.32 | a | 55.55 | a | 41.39 | c | 34.11 | c | 29.94 | g | 45.96 | a | |||||
1985 | 34.24 | 32.88 | 32.55 | b | 45.68 | b | 46.16 | b | 57.98 | b | 62.59 | b | 56.63 | 48.43 | a | 45.35 | 31.79 | a | 36.58 | 44.24 | ||||||
1986 | 38.00 | a | 34.92 | b | 41.30 | a | 40.30 | 48.33 | b | 58.62 | a | 58.97 | 62.16 | 49.15 | g | 46.97 | 41.22 | a | 34.28 | a | 45.92 | a | ||||
1987 | 29.92 | 33.46 | 35.17 | b | 47.02 | b | 51.14 | b | 59.47 | a | 57.66 | b | 63.33 | a | 58.82 | e | 53.48 | 36.79 | a | 27.59 | c | 46.15 | ||||
1988 | 30.62 | a | 37.52 | c | 37.83 | b | 43.57 | b | 45.34 | b | 55.77 | b | 66.84 | 63.65 | 57.88 | 54.13 | 34.38 | 30.95 | a | 46.54 | ||||||
1989 | 29.58 | 26.52 | 34.97 | 44.86 | a | 46.12 | c | 57.68 | 59.92 | 58.10 | 54.07 | 44.15 | 39.30 | 37.87 | a | 44.43 | ||||||||||
1990 | 31.85 | a | 27.00 | a | 36.72 | b | 46.04 | c | 45.41 | c | 51.02 | a | 63.37 | a | 59.19 | 55.60 | 47.37 | 35.79 | a | 24.82 | 43.68 | |||||
1991 | 32.43 | a | 39.14 | 29.18 | a | 36.28 | a | 43.73 | c | 52.47 | a | 63.41 | b | 59.05 | a | 60.92 | 51.77 | a | 39.15 | 33.37 | a | 45.07 | ||||
1992 | 31.91 | b | 35.05 | 37.39 | 43.79 | b | 54.62 | a | 56.25 | 59.73 | 64.21 | 57.40 | a | 49.35 | a | 37.12 | 28.80 | c | 46.30 | |||||||
1993 | 26.12 | c | 28.37 | a | 37.85 | a | ----- | z | 48.16 | 53.07 | 58.65 | 60.02 | b | 56.38 | a | 48.18 | 36.22 | 30.17 | b | 43.93 | a | |||||
1994 | 33.77 | c | 28.02 | 38.68 | a | 41.20 | c | 48.83 | b | 54.62 | 65.58 | a | 61.47 | a | 56.45 | 44.50 | 26.98 | b | 28.88 | c | 44.08 | |||||
1995 | 31.18 | a | 37.68 | 34.02 | c | 37.52 | b | 44.13 | a | 52.41 | b | 59.95 | b | 60.33 | a | 57.03 | 48.85 | 42.45 | a | 33.02 | e | 44.88 | ||||
1996 | 33.19 | d | 34.04 | a | 36.26 | b | 39.52 | a | 46.29 | 55.83 | a | 65.90 | a | 63.87 | a | 54.52 | a | 46.28 | b | 38.04 | b | 32.72 | d | 45.54 | ||
1997 | 31.26 | d | 33.81 | a | 39.03 | 40.53 | 52.71 | 54.68 | 61.98 | 60.00 | b | 55.32 | b | 43.92 | a | 37.74 | a | 31.57 | b | 45.21 | ||||||
1998 | 30.93 | b | 29.23 | b | 35.00 | a | 37.02 | 38.50 | a | 52.25 | 63.09 | c | 63.02 | a | 58.30 | 44.32 | 33.83 | 29.87 | 42.95 | |||||||
1999 | 33.65 | a | 27.94 | a | 31.33 | b | 36.26 | a | 48.68 | c | 53.90 | a | 59.30 | a | 57.83 | a | 59.08 | 50.40 | b | 39.63 | 33.19 | 44.27 | ||||
2000 | 30.31 | b | 32.55 | a | 36.21 | c | 43.46 | b | 48.17 | b | 58.58 | 57.98 | a | 61.57 | a | 53.31 | c | 44.85 | 32.71 | b | 34.90 | 44.55 | ||||
2001 | 28.46 | c | 28.60 | c | 38.26 | 36.91 | a | 56.77 | 55.20 | 61.85 | 63.00 | 58.47 | 51.66 | 36.87 | 29.28 | d | 45.44 | |||||||||
2002 | 27.69 | b | 34.81 | d | 35.24 | b | 41.46 | g | 47.27 | a | 57.68 | 65.88 | a | 62.52 | b | 57.24 | c | 48.00 | i | 39.18 | k | 30.64 | b | 46.55 | c | |
2003 | 36.73 | a | 31.96 | b | 36.37 | e | 31.54 | f | 46.81 | g | 60.33 | d | 64.63 | e | 59.23 | e | 60.56 | e | 51.27 | c | 31.77 | f | 29.47 | b | 47.84 | c |
2004 | 28.88 | e | 30.90 | h | 41.91 | d | 42.10 | f | 50.09 | i | 57.31 | f | 61.87 | l | 61.24 | f | 53.96 | d | 43.21 | c | 34.93 | 34.42 | f | 40.58 | g | |
2005 | 30.77 | c | 34.18 | c | 36.78 | a | 38.43 | g | 46.98 | d | 50.00 | k | 65.36 | i | 62.75 | g | 51.40 | i | 45.48 | a | 37.41 | b | 33.05 | i | 38.60 | f |
2006 | 31.23 | g | 31.60 | d | 26.79 | e | 36.57 | i | 50.52 | d | 59.17 | i | 65.27 | e | 60.15 | k | 58.17 | f | 44.38 | o | 37.76 | e | 32.63 | h | 42.39 | g |
2007 | 31.17 | e | 34.11 | j | 39.89 | l | 41.67 | i | 51.64 | m | 55.66 | k | 62.22 | o | 63.42 | l | 53.28 | n | 43.20 | c | 40.62 | d | 27.52 | e | 35.63 | h |
2008 | 26.55 | l | 32.37 | f | 35.57 | i | 34.89 | u | 45.15 | r | 57.12 | f | 64.58 | e | 64.14 | j | 58.94 | d | 50.06 | v | 42.03 | l | 30.72 | h | 61.76 | j |
2009 | 35.85 | h | 29.31 | g | 33.35 | g | 41.98 | f | 51.90 | e | 53.27 | f | 64.12 | c | 61.33 | g | 60.74 | c | 46.40 | j | 37.12 | j | 27.05 | i | 58.92 | i |
2010 | 33.16 | f | 31.32 | f | 34.27 | k | 35.19 | l | 41.13 | e | 48.88 | n | 59.00 | m | 56.25 | k | 52.00 | i | 45.04 | h | 36.17 | f | 30.92 | g | 41.13 | k |
2011 | 32.83 | j | 28.85 | e | 31.64 | i | 37.00 | h | 41.23 | k | 49.14 | i | 58.33 | h | 61.34 | i | 59.24 | i | 47.36 | j | 33.86 | e | 33.34 | c | 32.02 | i |
2012 | 34.62 | j | 33.12 | e | 33.93 | c | 39.18 | k | 49.63 | h | 55.30 | h | 60.48 | g | 63.68 | i | 60.67 | c | 46.35 | d | 37.34 | h | 27.78 | d | 40.37 | g |
2013 | 30.37 | e | 32.02 | h | 38.19 | d | 47.18 | s | 49.82 | i | 59.62 | m | 66.41 | d | 59.86 | f | 55.73 | d | 45.40 | p | 39.37 | g | 26.09 | t | 47.67 | h |
2014 | 37.96 | g | 33.09 | f | 38.32 | c | 40.14 | i | 52.00 | p | 58.83 | o | 68.68 | q | 62.03 | n | 59.83 | l | 47.16 | i | 39.20 | e | 34.04 | f | 38.76 | j |
2015 | 38.64 | i | 42.06 | l | 42.52 | e | 43.30 | j | 49.04 | f | 62.46 | e | 63.00 | e | 62.54 | f | 56.59 | g | 50.43 | c | 31.66 | e | 28.46 | h | 50.01 | g |
2016 | 30.07 | c | 35.35 | f | 36.88 | f | 44.84 | e | 48.68 | f | 57.35 | m | 63.42 | f | 65.45 | i | 57.14 | e | 45.18 | c | 39.32 | m | 29.09 | h | 44.31 | h |
2017 | 28.76 | h | 31.48 | e | 36.82 | c | 39.29 | k | 51.38 | g | 59.09 | b | 66.19 | e | 66.24 | f | 56.92 | f | 47.24 | f | 36.25 | h | 35.86 | i | 48.40 | h |
2018 | 33.63 | e | 29.40 | h | 29.37 | h | 39.95 | i | 50.52 | i | 58.09 | n | 66.50 | l | 61.88 | f | 55.48 | f | 46.82 | f | 41.32 | p | 30.98 | g | 33.63 | k |
2019 | 34.11 | i | 27.72 | s | ----- | z | 49.19 | q | 46.81 | b | 59.03 | n | 62.32 | l | 61.74 | j | 53.22 | n | 42.80 | f | 39.54 | e | 30.36 | f | 43.18 | j |
2020 | 30.98 | e | 37.18 | l | 32.08 | f | 42.84 | k | 47.28 | o | 57.79 | p | 64.14 | j | 65.22 | h | 59.60 | j | 52.83 | j | 37.79 | m | 32.65 | g | 30.98 | k |
2021 | 31.38 | a | 32.74 | e | 30.80 | p | 43.00 | i | 51.58 | m | 63.14 | w | 67.79 | x | 63.41 | t | 57.64 | s | 47.06 | v | 39.42 | l | 38.92 | y | 32.06 | j |
2022 | ----- | z | 31.81 | t | 39.24 | n | 39.25 | l | 47.44 | o | 56.70 | o | 63.81 | r | 63.44 | n | 58.94 | l | 52.53 | p | 33.89 | p | 29.33 | m | ----- | z |
2023 | 30.68 | n | 29.22 | s | 26.15 | n | 36.18 | s | 48.78 | o | 54.58 | r | 65.06 | m | 62.92 | m | 51.69 | l | 51.46 | r | 40.27 | o | 37.00 | t | ----- | z |
2024 | 33.36 | t | 32.36 | r | 36.12 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.66 | 31.84 | 34.36 | 39.54 | 47.58 | 55.54 | 62.45 | 60.81 | 56.30 | 47.21 | 37.09 | 31.94 | 44.51 | |||||||||||||
S.D. | 3.48 | 3.53 | 3.75 | 4.36 | 3.56 | 2.97 | 2.79 | 2.58 | 2.71 | 3.35 | 3.34 | 3.80 | 0.94 | |||||||||||||
SKEW | -0.34 | 0.03 | -0.01 | -0.43 | -0.10 | 0.07 | -0.33 | -0.35 | -0.33 | 0.32 | -0.13 | 0.03 | 0.15 | |||||||||||||
MAX | 38.00 | 39.71 | 42.52 | 47.02 | 56.77 | 62.46 | 67.34 | 65.61 | 60.93 | 54.92 | 45.03 | 39.63 | 46.54 | |||||||||||||
MIN | 21.97 | 24.46 | 26.79 | 27.52 | 38.50 | 49.08 | 55.45 | 54.02 | 48.43 | 41.39 | 26.98 | 23.97 | 42.62 | |||||||||||||
YRS | 63 | 61 | 63 | 53 | 59 | 56 | 59 | 55 | 60 | 60 | 60 | 57 | 46 |