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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.77 | d | ----- | z | 55.46 | c | ----- | z | 52.60 | a | 39.83 | a | 34.26 | 46.18 | g | |
1979 | 36.68 | 37.50 | 43.10 | 44.23 | 50.74 | ----- | z | 59.13 | a | 59.57 | c | ----- | z | ----- | z | 39.63 | 37.35 | 45.33 | c | |||||||
1980 | ----- | z | ----- | z | ----- | z | 49.42 | d | 49.06 | 50.76 | e | 61.12 | e | 60.19 | j | 54.00 | a | 50.16 | f | 39.43 | b | 40.03 | a | 49.12 | e | |
1981 | 39.90 | 39.75 | 42.13 | 45.80 | 51.81 | 59.12 | d | 62.46 | e | ----- | z | 58.08 | e | ----- | z | 42.52 | a | 36.67 | a | 47.82 | b | |||||
1982 | 35.03 | 39.60 | c | 41.68 | 44.50 | b | 50.16 | 51.15 | d | 57.90 | b | 62.44 | f | 56.46 | b | 46.72 | b | 38.37 | 33.29 | 44.99 | a | |||||
1983 | 37.77 | a | 40.12 | b | 45.42 | 42.47 | 49.19 | e | 53.77 | d | 56.54 | g | 62.22 | d | 60.19 | c | 53.73 | e | 42.17 | a | 39.03 | b | 47.82 | a | ||
1984 | 37.86 | c | 35.41 | b | 40.81 | 43.97 | 51.03 | 54.70 | 64.81 | 64.48 | b | 62.41 | c | 45.23 | a | 38.57 | 35.78 | d | 47.92 | |||||||
1985 | 34.45 | 34.79 | 37.17 | a | 44.71 | b | 49.16 | 53.47 | 62.35 | 54.74 | 52.84 | e | ----- | z | 38.04 | e | 35.57 | c | 45.21 | a | ||||||
1986 | 38.65 | 38.86 | 43.58 | 43.00 | e | 49.80 | a | 55.31 | a | 59.42 | g | 62.81 | d | 51.97 | 49.19 | 41.72 | a | 36.17 | b | 46.46 | a | |||||
1987 | 35.24 | b | 37.76 | c | 40.87 | a | 49.07 | 53.97 | 55.83 | a | 55.38 | b | 58.89 | d | 55.27 | d | 53.86 | c | 41.97 | 31.46 | c | 47.46 | ||||
1988 | 34.30 | d | 37.18 | a | 40.73 | e | 44.50 | d | 47.42 | g | ----- | z | 58.30 | k | 56.17 | m | 53.14 | h | 49.04 | g | 40.38 | f | 34.26 | h | 39.18 | h |
1989 | 32.59 | i | 36.00 | h | 43.29 | g | 44.00 | e | 48.04 | g | 51.86 | i | 60.36 | i | 55.84 | l | 53.12 | d | 46.80 | k | 39.05 | j | 34.20 | f | 48.56 | j |
1990 | 35.15 | e | 34.62 | o | 40.92 | r | 48.71 | f | 49.38 | j | 56.79 | a | 61.97 | a | 58.97 | b | 56.93 | 48.69 | b | 38.85 | c | 31.55 | b | 48.61 | d | |
1991 | 36.40 | a | 39.86 | 37.56 | d | 44.38 | a | 46.48 | b | 51.45 | a | 58.28 | b | 59.59 | b | 59.29 | b | 52.80 | a | 40.71 | f | 38.96 | e | 47.73 | a | |
1992 | 33.66 | b | 40.55 | 44.26 | 48.81 | d | 54.24 | b | 54.65 | j | ----- | z | 64.16 | f | 57.16 | k | 50.68 | l | 40.41 | a | 34.28 | b | 42.31 | e | ||
1993 | 38.52 | b | 41.78 | a | 44.84 | 47.10 | a | 52.55 | b | 56.71 | b | 54.97 | b | 58.46 | e | 55.75 | f | 49.93 | c | 41.53 | 34.50 | a | 47.35 | a | ||
1994 | 36.67 | g | 37.86 | 44.34 | b | 47.88 | d | 51.16 | 59.00 | c | 60.55 | 64.29 | 58.03 | 48.48 | b | 35.93 | 36.59 | b | 49.47 | a | ||||||
1995 | 41.59 | d | 45.68 | f | 44.00 | h | 42.81 | i | 49.04 | c | 53.54 | b | 59.45 | 62.92 | g | 59.73 | 49.79 | b | 44.11 | b | 37.75 | g | 51.04 | e | ||
1996 | 38.93 | d | 43.96 | a | 42.06 | 46.85 | d | 52.67 | g | 55.63 | c | 64.31 | e | 62.33 | p | 58.48 | e | 49.70 | d | 43.64 | b | 38.55 | k | 49.28 | c | |
1997 | 40.74 | d | 37.65 | e | 43.34 | b | 46.14 | a | 54.89 | d | 56.10 | 57.74 | 62.72 | b | 61.39 | b | 49.79 | c | 43.72 | e | 36.10 | 49.19 | ||||
1998 | 39.50 | a | 40.93 | a | ----- | z | 43.42 | f | 48.57 | h | 52.36 | b | 62.10 | a | 64.81 | d | 57.26 | c | 46.97 | 41.96 | d | 36.41 | b | 49.14 | c | |
1999 | 37.74 | 37.85 | a | 40.21 | b | 43.03 | a | 49.00 | c | 52.83 | a | 59.74 | 59.76 | b | 56.03 | 49.40 | a | 42.91 | s | 35.55 | b | 47.38 | a | |||
2000 | 41.31 | b | 41.93 | a | 41.65 | 46.08 | e | 53.32 | c | 55.96 | b | 58.21 | b | 63.17 | b | 57.71 | b | 50.48 | d | 37.59 | a | 37.10 | b | 48.71 | ||
2001 | 35.44 | d | 38.12 | b | 43.89 | d | 43.56 | c | 54.61 | c | 56.64 | e | 59.17 | h | 62.77 | e | 57.47 | 52.59 | b | 42.69 | a | 32.96 | e | 47.34 | a | |
2002 | 36.20 | u | ----- | z | 37.62 | o | 46.91 | g | 50.07 | b | 56.64 | e | 62.39 | c | 59.41 | d | 58.36 | h | 49.97 | b | 43.61 | b | 37.00 | e | 51.30 | e |
2003 | 39.26 | 41.71 | g | 44.57 | j | 42.00 | t | 51.93 | q | 56.52 | a | 61.55 | k | 62.41 | b | 59.16 | e | 48.85 | k | 41.33 | f | 37.04 | f | 54.34 | h | |
2004 | 37.48 | h | 37.73 | n | 47.96 | h | 47.92 | f | 51.48 | j | 56.19 | c | 60.96 | d | 61.28 | f | 58.36 | e | 50.04 | d | 40.08 | d | 36.58 | e | 50.37 | f |
2005 | 40.24 | b | 43.68 | i | 45.00 | p | 43.57 | i | 52.81 | d | 55.55 | a | 64.41 | i | 64.08 | g | 54.97 | a | 50.06 | 44.50 | ----- | z | 49.69 | f | ||
2006 | 39.53 | l | 39.30 | a | ----- | z | 45.71 | f | ----- | z | 61.73 | 70.77 | 61.07 | a | 58.32 | h | 51.00 | k | 46.21 | a | 36.38 | b | 52.58 | f | ||
2007 | 34.69 | b | 40.25 | d | 44.24 | f | 48.24 | a | 52.35 | e | 55.73 | 63.97 | 64.90 | 56.30 | 50.57 | c | 45.67 | c | 35.79 | b | 49.86 | a | ||||
2008 | 38.00 | e | 39.54 | a | 44.65 | e | 45.14 | h | 50.52 | b | 58.13 | g | 64.48 | h | 64.96 | g | 62.38 | d | 52.90 | b | 47.90 | a | 42.19 | o | 47.98 | e |
2009 | 40.53 | a | 40.21 | 42.81 | e | 45.93 | a | 54.71 | 57.11 | b | 65.03 | 61.32 | c | 61.43 | 50.39 | 42.33 | 38.94 | 50.06 | ||||||||
2010 | 39.03 | a | 41.00 | 41.50 | m | 45.33 | 49.32 | 54.90 | 62.35 | 61.00 | 58.33 | 54.77 | 43.00 | 41.90 | 50.09 | a | ||||||||||
2011 | 40.16 | 37.50 | 44.77 | 49.17 | 49.16 | 54.97 | 63.42 | 62.42 | 60.86 | a | 52.53 | a | 42.70 | 35.55 | 49.43 | |||||||||||
2012 | 39.06 | 40.21 | 42.52 | 47.13 | 53.55 | 56.37 | 62.74 | 69.03 | 64.67 | 53.84 | 45.37 | 42.19 | 51.39 | |||||||||||||
2013 | 35.87 | 38.04 | 47.06 | 49.07 | 55.06 | 57.70 | 66.35 | 64.10 | 61.40 | 48.94 | 45.83 | 37.61 | 50.59 | |||||||||||||
2014 | 40.13 | 44.29 | 48.77 | 49.30 | 54.74 | 58.17 | 64.77 | 62.52 | 63.00 | 53.84 | 44.97 | 42.61 | 52.26 | |||||||||||||
2015 | 41.23 | 42.93 | 46.71 | 48.10 | 53.10 | 61.43 | 64.06 | 65.71 | 65.03 | 59.61 | 42.43 | 38.45 | 52.40 | |||||||||||||
2016 | 41.10 | 44.45 | 47.03 | 50.67 | 54.39 | 62.30 | 65.17 | a | 64.43 | a | 60.33 | 55.13 | 47.47 | 43.52 | 53.00 | |||||||||||
2017 | 43.28 | b | 46.21 | 47.74 | 50.47 | 53.87 | 60.93 | 67.19 | 66.81 | 62.40 | 55.35 | 49.10 | 41.48 | 53.74 | ||||||||||||
2018 | 44.81 | 41.46 | 46.77 | 50.33 | 54.19 | 58.33 | 69.74 | 68.00 | 60.60 | 55.03 | 45.56 | c | 41.94 | 53.06 | ||||||||||||
2019 | 42.06 | 39.96 | 46.13 | 51.40 | 51.61 | 59.80 | 64.10 | 64.20 | a | 62.93 | 50.23 | 45.13 | 43.19 | 51.73 | ||||||||||||
2020 | 40.23 | 41.72 | 45.67 | a | 51.33 | 56.42 | 58.80 | 62.19 | 67.52 | 62.53 | 56.29 | 44.33 | 39.74 | 52.23 | ||||||||||||
2021 | 40.61 | 41.64 | 42.58 | 49.57 | 53.68 | 61.37 | 68.35 | 66.52 | 62.47 | 51.42 | 47.70 | 41.23 | 52.26 | |||||||||||||
2022 | 42.32 | 40.32 | 45.97 | 51.30 | 54.32 | 63.00 | 66.35 | 70.13 | 66.53 | 56.58 | 42.33 | 42.13 | 53.44 | |||||||||||||
2023 | 40.97 | 38.25 | 44.19 | 48.37 | 54.00 | 56.00 | 67.19 | 67.26 | 62.00 | 55.58 | 46.37 | 43.23 | 51.95 | |||||||||||||
2024 | 41.77 | 44.79 | 45.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.15 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.86 | 40.09 | 43.73 | 47.09 | 52.11 | 56.42 | 62.71 | 62.90 | 59.29 | 51.70 | 42.81 | 37.77 | 51.16 | |||||||||||||
S.D. | 2.75 | 2.56 | 2.73 | 2.69 | 2.39 | 3.26 | 3.73 | 3.59 | 3.49 | 3.11 | 3.10 | 3.33 | 1.93 | |||||||||||||
SKEW | -0.19 | 0.34 | -0.45 | -0.03 | -0.31 | -0.01 | -0.01 | -0.16 | -0.17 | 0.28 | -0.11 | 0.12 | -0.54 | |||||||||||||
MAX | 44.81 | 46.21 | 48.77 | 51.40 | 56.42 | 63.00 | 70.77 | 70.13 | 66.53 | 59.61 | 49.10 | 43.52 | 53.74 | |||||||||||||
MIN | 33.66 | 34.79 | 37.17 | 42.47 | 46.48 | 48.77 | 54.97 | 54.74 | 51.97 | 45.23 | 35.93 | 31.46 | 47.46 | |||||||||||||
YRS | 40 | 38 | 34 | 36 | 37 | 41 | 36 | 35 | 39 | 37 | 41 | 39 | 18 |