YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.32 | 54.68 | 55.17 | 53.10 | 42.60 | 37.65 | 49.92 | f | ||||||
1949 | 34.74 | 39.25 | 42.48 | 49.40 | 52.13 | 56.77 | 57.35 | 57.42 | 59.23 | 51.26 | 50.50 | 40.61 | 49.26 | |||||||||||||
1950 | 37.74 | 42.70 | a | 43.81 | 50.93 | 50.48 | 53.93 | 61.35 | 56.00 | 57.47 | 53.84 | 48.93 | 45.42 | 50.22 | ||||||||||||
1951 | 41.45 | 41.71 | 44.88 | g | 48.97 | 49.23 | 54.87 | 60.00 | 58.06 | 57.23 | 52.65 | 46.43 | 41.00 | 50.15 | a | |||||||||||
1952 | 39.35 | 41.69 | 42.65 | 47.77 | 51.45 | 52.90 | 57.32 | 60.06 | 61.00 | 51.84 | 45.70 | 42.26 | 49.50 | |||||||||||||
1953 | 44.48 | 39.32 | 43.61 | 46.70 | 47.61 | 50.87 | 61.26 | 58.61 | 56.13 | 52.29 | 49.69 | d | 41.00 | 49.30 | ||||||||||||
1954 | 41.58 | 47.32 | 44.97 | 50.17 | 52.50 | a | 54.87 | 62.71 | 59.48 | 57.20 | 51.42 | 49.87 | 41.97 | 51.17 | ||||||||||||
1955 | 39.83 | a | 40.29 | 46.42 | 46.73 | 51.03 | 54.03 | 58.30 | a | 62.53 | a | 61.33 | 50.90 | 47.53 | 43.58 | 50.21 | ||||||||||
1956 | 42.94 | 38.00 | 41.52 | 46.63 | 51.81 | 55.68 | b | 58.33 | a | 56.29 | 59.72 | a | 51.74 | 45.97 | 42.16 | 49.23 | ||||||||||
1957 | 43.71 | 48.14 | 47.77 | a | 48.87 | 52.81 | 58.93 | 59.45 | 61.06 | 56.47 | 53.42 | 44.37 | 43.81 | 51.57 | ||||||||||||
1958 | 40.77 | 46.19 | a | 44.23 | 49.73 | 51.81 | 53.47 | 55.87 | 62.68 | 59.90 | 58.45 | 48.17 | 43.97 | 51.27 | ||||||||||||
1959 | 44.61 | 43.43 | 47.81 | 53.03 | 53.10 | 55.07 | 62.32 | 62.35 | 58.97 | 54.77 | 47.60 | 46.52 | b | 52.47 | ||||||||||||
1960 | 40.52 | 43.17 | 47.13 | 49.27 | 52.90 | 56.00 | 59.32 | 58.52 | 61.83 | 53.55 | 47.03 | 41.87 | 50.93 | |||||||||||||
1961 | 43.84 | 43.71 | 45.87 | 48.93 | 50.65 | 54.80 | 59.81 | 61.45 | 56.83 | 52.71 | 47.03 | 43.13 | 50.73 | |||||||||||||
1962 | 41.71 | 43.54 | 42.03 | 50.27 | 49.81 | 53.47 | 55.58 | 58.19 | 55.43 | 50.87 | 45.80 | 41.67 | a | 49.03 | ||||||||||||
1963 | 40.29 | 48.04 | 44.00 | 45.63 | 52.94 | 55.10 | a | 55.00 | 59.13 | 62.27 | 56.58 | 48.30 | 41.45 | 50.73 | ||||||||||||
1964 | 37.97 | 39.14 | 42.97 | 47.97 | 48.84 | 53.90 | 56.94 | 60.19 | 55.17 | 56.39 | 45.40 | 42.94 | 48.98 | |||||||||||||
1965 | 41.74 | 40.36 | 45.26 | 48.13 | 50.13 | 54.17 | 54.77 | 60.16 | 54.03 | 55.74 | 49.47 | 43.23 | 49.77 | |||||||||||||
1966 | 40.35 | 39.57 | 44.26 | 50.40 | 53.77 | 55.20 | 56.74 | 61.23 | 56.93 | 53.74 | 48.90 | 44.55 | 50.47 | |||||||||||||
1967 | 40.81 | 42.18 | 46.10 | 42.67 | 50.84 | 52.50 | 59.13 | 63.90 | 62.13 | 53.74 | 49.97 | 39.84 | 50.32 | |||||||||||||
1968 | 40.87 | 48.69 | 46.16 | 48.17 | 51.77 | 54.87 | 60.90 | a | 58.06 | 58.30 | 52.29 | 47.13 | 40.16 | 50.61 | ||||||||||||
1969 | 45.61 | 42.64 | 43.26 | 49.40 | 52.16 | 57.53 | 59.32 | 61.55 | 59.30 | 50.42 | 49.33 | 43.47 | a | 51.17 | ||||||||||||
1970 | 43.58 | 45.29 | 46.68 | 44.90 | 52.32 | 54.17 | 58.42 | 61.10 | 55.23 | 52.32 | 45.83 | a | 43.19 | 50.25 | ||||||||||||
1971 | 41.10 | 41.71 | 41.61 | 45.43 | 48.77 | 52.07 | 58.13 | 63.55 | 58.13 | 51.74 | 42.67 | 38.42 | 48.61 | |||||||||||||
1972 | 34.94 | 41.07 | 45.97 | 46.83 | 52.32 | 57.27 | 61.10 | 61.81 | 57.87 | 53.65 | 44.97 | 38.84 | 49.72 | |||||||||||||
1973 | 37.52 | 44.25 | 43.55 | 45.93 | ----- | z | 55.77 | 56.77 | 57.65 | 55.00 | 50.77 | 45.33 | 43.16 | 48.70 | a | |||||||||||
1974 | 42.74 | 39.25 | 45.81 | 44.93 | 51.52 | 54.57 | 57.83 | b | 55.97 | 56.76 | a | 52.26 | 44.87 | 40.29 | 48.90 | |||||||||||
1975 | 39.77 | 38.86 | 41.20 | a | 42.90 | 47.68 | 51.97 | 56.13 | 55.71 | 58.53 | 47.81 | 42.10 | 38.81 | 46.79 | ||||||||||||
1976 | 39.32 | 42.48 | b | 41.29 | 44.21 | b | 50.97 | 54.55 | a | 60.19 | 56.35 | 61.72 | a | 53.74 | 46.80 | 39.84 | 49.29 | |||||||||
1977 | 42.06 | 43.18 | 41.35 | 47.97 | 49.26 | 55.03 | 57.39 | 61.55 | 58.10 | 54.45 | 47.03 | a | 47.65 | 50.42 | ||||||||||||
1978 | 45.81 | 44.82 | 49.58 | 47.90 | 51.74 | 56.93 | 57.97 | 57.81 | 60.57 | 54.61 | 46.33 | 39.03 | 51.09 | |||||||||||||
1979 | 41.13 | 41.11 | 44.81 | 47.53 | 52.87 | 57.27 | 56.35 | 58.52 | 59.40 | 51.80 | a | 44.53 | 43.32 | 49.89 | ||||||||||||
1980 | 46.70 | a | 47.55 | 44.52 | 48.30 | 49.06 | 51.28 | a | 58.61 | 61.23 | 56.90 | 52.06 | 46.80 | 42.94 | 50.50 | |||||||||||
1981 | 44.48 | 44.52 | a | 45.97 | 49.07 | 52.26 | 56.90 | 60.61 | 61.87 | 58.53 | 51.52 | 47.72 | a | 44.19 | 51.47 | |||||||||||
1982 | 41.10 | 45.57 | 45.16 | 47.67 | 53.40 | a | 53.83 | a | 56.84 | 62.10 | 61.60 | 53.71 | 47.21 | a | 42.10 | 50.86 | ||||||||||
1983 | 44.39 | 46.11 | 48.30 | a | 47.60 | 51.35 | 54.30 | 56.59 | b | 63.03 | a | 62.89 | b | 55.77 | a | 47.93 | 43.61 | 51.82 | ||||||||
1984 | 42.52 | 42.07 | 44.35 | ----- | z | 51.33 | a | 54.10 | 62.10 | 61.67 | a | 62.03 | a | 50.35 | 43.00 | 39.45 | 50.27 | a | ||||||||
1985 | 37.00 | a | 36.29 | 39.29 | 46.10 | 47.52 | 50.23 | 57.77 | a | 55.43 | a | 56.10 | a | 51.64 | c | 43.33 | 40.71 | 46.78 | ||||||||
1986 | 42.74 | 43.26 | a | 45.41 | b | 44.70 | 47.30 | a | 53.59 | a | 57.13 | a | 59.23 | 53.20 | 51.20 | a | 47.00 | 41.94 | 48.89 | |||||||
1987 | 37.24 | b | 41.68 | 43.87 | 48.52 | c | 51.87 | a | 52.57 | 52.39 | 55.03 | 55.67 | c | 57.44 | d | 46.57 | 38.30 | a | 48.43 | |||||||
1988 | 40.03 | a | ----- | z | 43.74 | 48.07 | a | 49.79 | b | 52.40 | 57.73 | a | 57.83 | a | 56.31 | a | 51.86 | c | 45.07 | 40.47 | a | 49.39 | a | |||
1989 | 36.68 | c | 42.15 | b | 44.86 | b | 49.23 | d | 49.13 | 54.36 | b | 55.48 | b | 57.03 | b | 55.23 | 51.27 | a | 46.24 | a | 43.61 | 48.77 | ||||
1990 | 42.28 | b | ----- | z | 46.87 | 52.33 | 51.90 | 58.46 | b | ----- | z | 61.16 | ----- | z | 55.70 | a | 46.96 | b | 41.63 | a | 50.81 | c | ||||
1991 | 43.29 | 45.17 | e | 43.40 | a | 46.83 | a | 50.81 | 53.33 | 57.19 | 58.37 | a | ----- | z | 53.52 | 47.20 | 42.93 | b | 49.28 | a | ||||||
1992 | 41.13 | 46.45 | 47.00 | 52.20 | 56.60 | a | 55.50 | 60.17 | a | ----- | z | 56.50 | 53.61 | 45.63 | 40.50 | a | 50.48 | a | ||||||||
1993 | 43.94 | 43.71 | 45.84 | 47.53 | ----- | z | 52.60 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.72 | g | |||||
1994 | 43.10 | a | 43.22 | a | 46.80 | a | ----- | z | ----- | z | 55.07 | a | 57.00 | 60.64 | c | 57.00 | 53.59 | b | 42.10 | 41.32 | 49.98 | b | ||||
1995 | 44.28 | b | 49.41 | a | 48.07 | b | 47.03 | 51.32 | 52.97 | a | 55.10 | b | 57.87 | a | 57.40 | 52.39 | c | 46.36 | b | 41.86 | b | 50.34 | ||||
1996 | 41.48 | b | 44.72 | 44.81 | 46.45 | h | 49.25 | k | 50.62 | i | 57.85 | k | 57.59 | i | 54.82 | h | 44.76 | j | ----- | z | 41.10 | k | 43.67 | i | ||
1997 | 44.57 | j | 40.24 | g | ----- | z | 45.14 | h | ----- | z | ----- | z | 55.14 | j | 55.57 | j | ----- | z | ----- | z | 44.15 | j | ----- | z | ----- | z |
1998 | 39.00 | e | 40.52 | g | 40.79 | g | 42.43 | b | 46.40 | a | ----- | z | 54.48 | j | 56.65 | h | 52.83 | g | 45.32 | i | 42.85 | j | 37.15 | k | 42.61 | i |
1999 | 39.45 | k | 36.90 | g | 41.44 | f | 43.24 | e | 44.95 | j | 48.39 | g | 52.32 | i | 47.52 | h | 54.75 | j | 52.90 | j | ----- | z | 42.52 | j | 43.24 | k |
2000 | 44.05 | k | 44.68 | g | 44.75 | k | 47.68 | h | 51.67 | g | 54.60 | j | 52.44 | f | 52.95 | k | 53.48 | i | 50.78 | h | 38.52 | i | 37.24 | j | ----- | z |
2001 | 38.86 | j | 41.00 | f | 45.71 | j | 46.05 | j | 52.60 | k | 52.86 | h | 54.25 | g | 54.70 | h | 51.86 | i | 47.22 | h | 43.20 | 36.32 | 39.76 | j | ||
2002 | 35.41 | b | 37.96 | 39.48 | h | 44.29 | f | 45.57 | h | 50.41 | h | 50.43 | j | 48.86 | j | 52.47 | k | 44.90 | k | 46.59 | m | 40.04 | h | 36.69 | j | |
2003 | 43.85 | k | 43.00 | i | 42.80 | f | 42.29 | i | 48.89 | l | ----- | z | 61.29 | x | 60.21 | l | 53.40 | o | ----- | z | 49.31 | q | 43.84 | l | ----- | z |
2004 | 44.28 | m | 43.85 | i | 52.26 | l | 52.88 | m | 58.89 | l | 58.44 | l | 61.39 | m | 60.57 | j | 62.30 | j | 51.59 | i | 42.55 | j | 40.11 | m | ----- | z |
2005 | 40.05 | k | 40.85 | h | 41.81 | j | ----- | z | 46.32 | i | 51.63 | k | 57.61 | h | 54.36 | i | 46.29 | i | 45.43 | h | 47.00 | y | ----- | z | ----- | z |
2006 | 40.00 | x | 45.89 | i | ----- | z | ----- | z | 49.68 | i | 59.10 | j | 62.22 | h | 54.14 | j | 52.00 | h | 47.52 | h | 43.84 | k | 37.86 | i | ----- | z |
2007 | 32.30 | k | 36.53 | i | 36.48 | h | 42.14 | h | 46.33 | j | 45.21 | k | ----- | z | 54.14 | i | 47.40 | j | 42.72 | m | 36.10 | i | 32.61 | h | ----- | z |
2008 | 34.81 | j | ----- | z | 34.17 | h | ----- | z | ----- | z | 46.00 | h | 50.52 | j | 50.65 | h | 46.64 | h | 44.20 | k | 39.95 | i | 31.20 | k | ----- | z |
2009 | 32.50 | i | 33.40 | h | 32.77 | i | 35.10 | i | 40.26 | h | 42.86 | h | 46.73 | i | 47.57 | h | 45.60 | j | 38.43 | h | 32.33 | i | 28.90 | j | ----- | z |
2010 | 30.30 | h | 31.05 | h | 30.10 | j | 30.41 | h | 33.59 | i | 37.14 | i | 43.09 | h | 39.14 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | 37.41 | i | 31.85 | h | ----- | z | 38.10 | i | 40.86 | i | 42.19 | i | ----- | z | 62.24 | j | 58.75 | f | 50.61 | h | 41.63 | k | 36.39 | c | 36.39 | k |
2012 | 35.90 | k | 36.10 | 34.86 | c | 39.83 | 42.39 | 46.83 | a | 51.47 | a | 57.65 | 54.13 | 48.13 | a | 40.37 | k | 34.00 | 44.54 | b | ||||||
2013 | 32.87 | 32.50 | 36.94 | 39.13 | 44.50 | c | 41.44 | c | 59.77 | 43.45 | b | 61.90 | 50.35 | 51.33 | 46.06 | 45.02 | ||||||||||
2014 | 47.48 | 48.68 | 51.13 | 51.10 | 57.94 | 56.40 | 64.10 | 63.13 | 65.87 | 59.74 | 52.17 | 49.26 | 55.58 | |||||||||||||
2015 | 47.26 | 49.38 | b | 51.77 | 52.47 | 55.13 | 59.50 | 63.32 | 65.90 | 66.70 | 64.32 | 51.33 | 45.84 | 56.08 | ||||||||||||
2016 | 47.26 | 49.86 | 49.76 | b | 54.33 | 56.68 | 61.00 | 63.00 | 63.39 | 62.10 | 57.87 | 49.63 | 41.71 | 54.72 | ||||||||||||
2017 | 43.68 | 47.54 | 47.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.34 | i | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.42 | 43.11 | 44.80 | 47.62 | 51.04 | 54.33 | 58.33 | 59.37 | 58.47 | 53.29 | 46.79 | 41.85 | 50.27 | |||||||||||||
S.D. | 3.28 | 3.76 | 3.11 | 3.10 | 2.82 | 3.02 | 2.67 | 3.48 | 3.01 | 2.85 | 2.42 | 2.82 | 2.03 | |||||||||||||
SKEW | -0.39 | -0.28 | -0.56 | -0.47 | -0.39 | -1.44 | -0.01 | -1.75 | 0.62 | 1.33 | 0.03 | -0.11 | 0.59 | |||||||||||||
MAX | 47.48 | 49.86 | 51.77 | 54.33 | 57.94 | 61.00 | 64.10 | 65.90 | 66.70 | 64.32 | 52.17 | 49.26 | 56.08 | |||||||||||||
MIN | 32.87 | 32.50 | 34.86 | 39.13 | 42.39 | 41.44 | 51.47 | 43.45 | 53.20 | 47.81 | 42.10 | 34.00 | 45.02 | |||||||||||||
YRS | 55 | 53 | 53 | 52 | 50 | 52 | 51 | 51 | 50 | 52 | 52 | 54 | 42 |