YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.22 | v | 34.83 | f | 26.27 | i | ----- | z |
1953 | 27.35 | 23.69 | b | 35.10 | b | 37.63 | 39.90 | 53.80 | 63.52 | 60.00 | e | 51.00 | e | 42.03 | 33.57 | 20.74 | 40.70 | |||||||||
1954 | 27.23 | a | 31.93 | 36.55 | 41.62 | a | 45.61 | 53.07 | 64.94 | 59.29 | 57.67 | 46.72 | b | 33.05 | j | 27.13 | h | 46.46 | b | |||||||
1955 | 23.44 | m | 22.89 | i | 31.14 | i | 32.43 | i | 41.15 | r | 50.27 | h | 63.00 | l | 62.67 | g | 50.42 | d | 45.60 | a | 33.80 | 30.12 | g | 43.27 | i | |
1956 | 30.00 | d | 27.47 | l | 30.42 | 38.04 | e | 45.48 | d | 58.79 | b | 63.19 | 58.79 | b | 54.82 | b | 41.81 | 26.00 | d | 23.58 | g | 44.73 | b | |||
1957 | 33.26 | 36.93 | a | 35.31 | b | 36.77 | 41.80 | a | 56.00 | a | 64.80 | f | 61.68 | 50.07 | a | 45.87 | 30.47 | 29.43 | a | 41.60 | a | |||||
1958 | 22.52 | 31.29 | 32.35 | 37.57 | 47.52 | 57.37 | 63.45 | 63.13 | 56.07 | 45.87 | 31.00 | a | 26.03 | 42.85 | ||||||||||||
1959 | 24.55 | 27.58 | b | 27.94 | 40.70 | 41.90 | b | 57.53 | 64.48 | 62.39 | 53.43 | 41.63 | a | 34.80 | 29.68 | 42.22 | ||||||||||
1960 | 25.52 | 23.76 | 34.74 | 38.30 | 42.81 | 56.20 | 62.32 | 62.58 | 54.50 | 42.55 | 33.53 | 23.87 | 41.72 | |||||||||||||
1961 | 30.37 | a | 28.19 | b | 33.17 | b | 39.56 | c | 42.67 | a | 57.79 | b | 63.26 | 62.41 | b | 54.43 | 41.53 | a | 32.90 | 30.62 | e | 43.07 | ||||
1962 | 28.39 | 33.74 | a | 29.77 | 40.63 | 43.35 | 50.33 | 62.16 | 60.90 | a | 58.24 | a | 43.94 | 35.77 | 32.39 | c | 43.30 | |||||||||
1963 | 27.25 | c | 32.36 | 31.19 | 36.43 | 46.03 | a | 49.89 | b | 63.63 | a | 61.68 | 55.67 | 44.60 | a | 34.97 | a | 25.77 | 42.46 | |||||||
1964 | 19.24 | b | 19.31 | 29.90 | 36.83 | 42.00 | a | 51.47 | 64.00 | a | 60.90 | 53.47 | 44.77 | 29.90 | 27.43 | a | 39.94 | |||||||||
1965 | 28.27 | a | 26.74 | a | 28.63 | d | 38.39 | b | 40.16 | 48.07 | 62.27 | a | 60.06 | 51.34 | a | 39.10 | 37.03 | 30.42 | 40.87 | |||||||
1966 | ----- | z | 24.39 | 33.26 | 36.47 | 44.94 | 54.20 | 64.19 | 63.39 | 55.50 | b | 40.35 | 33.67 | 25.84 | 43.29 | a | ||||||||||
1967 | 22.74 | 26.89 | 34.55 | 36.13 | 43.61 | 53.53 | 64.13 | 60.13 | 54.77 | 41.19 | 35.10 | 26.58 | 41.61 | |||||||||||||
1968 | 27.68 | 33.28 | 34.42 | 36.03 | 43.23 | 53.47 | 61.84 | 58.39 | 52.27 | 41.58 | 31.10 | 22.71 | 41.33 | |||||||||||||
1969 | 30.52 | 27.96 | 27.67 | a | 38.45 | a | 46.32 | 53.47 | 65.13 | 64.26 | 56.53 | 41.23 | 34.00 | 29.16 | 42.89 | |||||||||||
1970 | 23.48 | 30.36 | 32.58 | 34.80 | 47.16 | 55.63 | 65.29 | 62.35 | 55.13 | 38.13 | 30.73 | 29.42 | 42.09 | |||||||||||||
1971 | 24.45 | 28.00 | 31.45 | 36.37 | 43.52 | 54.73 | 64.10 | 62.52 | 55.67 | 43.39 | 32.77 | 28.30 | a | 42.10 | ||||||||||||
1972 | 24.03 | 27.72 | 38.00 | 37.59 | a | 43.81 | 56.40 | 62.74 | 65.70 | a | 58.41 | a | 53.47 | a | 34.64 | b | 29.27 | a | 44.32 | |||||||
1973 | 23.26 | 30.68 | 32.16 | 39.33 | 44.52 | 50.90 | a | 57.84 | 58.19 | 50.93 | 50.93 | a | 34.72 | a | 26.42 | 41.66 | ||||||||||
1974 | 27.87 | 28.14 | 37.68 | 49.60 | 51.77 | a | 62.97 | 64.40 | a | 61.03 | 55.47 | 45.60 | a | 30.47 | 19.06 | 44.50 | ||||||||||
1975 | 22.42 | 22.25 | 34.26 | 31.83 | 40.35 | 48.87 | 60.58 | ----- | z | 56.38 | f | 39.61 | 29.97 | 29.74 | 35.99 | b | ||||||||||
1976 | 26.97 | 34.24 | 32.42 | 37.60 | 45.52 | 52.00 | a | 63.03 | a | 55.11 | m | 52.30 | 38.29 | 30.67 | 21.32 | 39.49 | a | |||||||||
1977 | 27.13 | 24.32 | 25.55 | 36.80 | 40.10 | 55.33 | 67.00 | a | 65.03 | 58.77 | 48.65 | 34.80 | 31.39 | 42.91 | ||||||||||||
1978 | 31.23 | a | 32.46 | 39.93 | a | 36.23 | 43.47 | a | 53.57 | 61.65 | 59.10 | 53.77 | 45.10 | 35.27 | 27.61 | 43.28 | ||||||||||
1979 | 28.77 | 28.00 | 32.66 | b | 37.30 | 48.39 | 58.47 | 62.39 | 56.39 | 53.43 | 39.32 | 27.57 | 25.29 | 41.50 | ||||||||||||
1980 | 27.55 | 33.31 | 32.10 | 34.27 | 37.52 | 46.63 | 64.84 | 62.23 | 51.53 | 41.23 | 29.50 | 28.84 | 40.79 | |||||||||||||
1981 | 33.16 | 28.21 | 30.71 | 38.41 | a | 45.00 | 59.27 | 65.87 | 61.68 | 55.43 | 43.61 | 33.83 | 27.16 | 43.53 | ||||||||||||
1982 | 29.43 | c | 32.50 | 36.35 | 39.17 | 44.39 | 49.73 | 64.19 | 63.42 | 56.63 | 36.42 | 36.34 | a | 29.06 | 43.14 | |||||||||||
1983 | 27.84 | 30.14 | 35.19 | 36.48 | a | 39.85 | d | 48.80 | 61.84 | 61.87 | 62.28 | a | 48.77 | 34.10 | a | 31.26 | 43.20 | |||||||||
1984 | 28.71 | 26.79 | 31.97 | 37.80 | 48.30 | a | 55.63 | 62.90 | ----- | z | 55.30 | 42.94 | 30.10 | 29.73 | a | 40.93 | a | |||||||||
1985 | 29.81 | 29.86 | 34.94 | 41.80 | 46.16 | 53.73 | 64.06 | 62.47 | a | 52.63 | 45.71 | 33.87 | 27.35 | 43.53 | ||||||||||||
1986 | 29.23 | 33.18 | 38.39 | 41.17 | 45.58 | 57.10 | 62.84 | 66.48 | 51.37 | 41.77 | 37.87 | 29.58 | 44.55 | |||||||||||||
1987 | 23.77 | 29.93 | 31.81 | 42.37 | 46.48 | 54.53 | 60.13 | 62.03 | 53.28 | a | 46.74 | 31.73 | 26.17 | b | 42.41 | |||||||||||
1988 | 28.03 | 31.34 | 30.68 | 40.03 | 44.39 | 55.13 | 65.17 | a | 65.45 | 52.63 | 48.16 | 33.13 | 26.29 | 43.37 | ||||||||||||
1989 | 24.65 | 31.25 | 36.71 | 41.03 | 45.35 | 53.79 | a | 67.35 | 65.54 | c | 55.53 | 45.29 | 33.47 | 26.69 | b | 43.89 | ||||||||||
1990 | 25.23 | a | 27.57 | 34.14 | c | 41.47 | 45.87 | 58.97 | 65.33 | a | 60.58 | 58.86 | b | 44.03 | a | 36.17 | 29.71 | c | 43.99 | |||||||
1991 | 29.90 | a | 33.68 | c | 31.35 | e | 35.07 | 42.81 | 49.17 | 62.52 | 64.10 | 56.87 | 44.10 | 31.47 | 33.00 | 42.83 | ||||||||||
1992 | 29.55 | 34.45 | 36.16 | 40.70 | 50.26 | 53.10 | 62.32 | 63.55 | 55.63 | 42.63 | a | 26.60 | 29.24 | b | 43.68 | |||||||||||
1993 | 36.77 | e | 32.17 | d | 34.90 | 37.20 | 48.77 | 52.30 | 63.81 | 64.55 | 53.13 | 44.06 | 31.62 | a | 26.39 | c | 43.81 | |||||||||
1994 | 23.53 | a | 26.73 | b | 36.93 | a | 38.14 | a | 45.42 | 60.47 | 63.81 | 65.83 | a | 58.93 | a | 42.17 | a | 33.07 | a | 30.83 | a | 43.82 | ||||
1995 | 29.90 | a | 34.50 | 34.84 | 34.86 | a | 43.50 | a | 49.07 | 61.15 | d | 66.50 | a | 57.39 | b | 41.32 | 36.36 | b | 26.61 | c | 43.00 | |||||
1996 | 24.33 | d | 36.21 | a | 33.00 | 38.43 | 46.48 | b | 56.87 | 66.42 | 64.07 | b | 56.20 | 43.58 | 33.53 | 25.67 | a | 43.73 | ||||||||
1997 | 29.32 | 25.40 | h | 35.63 | d | 39.41 | a | 50.68 | 52.50 | 62.31 | b | 65.48 | 60.75 | b | 42.63 | a | 32.24 | e | 25.52 | h | 47.10 | b | ||||
1998 | 24.93 | d | 29.00 | e | 34.35 | h | 35.00 | d | 43.77 | 51.30 | 66.08 | e | 64.07 | a | 57.89 | b | 40.31 | e | 30.71 | i | 25.85 | e | 43.82 | b | ||
1999 | 21.72 | f | 25.57 | e | 31.83 | b | 36.21 | b | 44.20 | a | 56.20 | 65.94 | 63.00 | 57.41 | a | 41.70 | a | 31.58 | f | 22.24 | f | 46.90 | c | |||
2000 | 23.46 | g | 26.96 | e | 33.29 | 39.97 | 49.00 | 60.70 | 63.84 | 63.68 | 56.57 | 48.23 | 30.00 | 27.35 | 45.42 | a | ||||||||||
2001 | 27.16 | 28.57 | 33.23 | 40.37 | 47.10 | 56.33 | 65.42 | 62.06 | 56.03 | 45.48 | 36.43 | 24.97 | a | 43.60 | ||||||||||||
2002 | 25.58 | 28.11 | a | 29.40 | a | 42.77 | 42.77 | 55.69 | a | 64.47 | a | 63.19 | 57.67 | 42.74 | 33.33 | 27.03 | 42.73 | |||||||||
2003 | 28.77 | a | 32.67 | a | 34.35 | 37.71 | b | 46.94 | 55.33 | 66.00 | c | 65.42 | 57.70 | 49.65 | 35.90 | 26.10 | a | 44.71 | ||||||||
2004 | 30.23 | 25.96 | a | 41.35 | 42.33 | 46.94 | 54.45 | a | 62.94 | 61.71 | 57.73 | d | 45.14 | b | 32.55 | a | 29.00 | f | 45.58 | a | ||||||
2005 | 33.48 | b | 37.48 | e | 36.65 | 40.39 | b | 50.10 | a | 57.74 | g | 65.73 | a | 64.17 | a | 57.57 | 46.73 | a | 34.73 | 26.59 | d | 44.87 | a | |||
2006 | 25.29 | 29.67 | a | 34.80 | a | 42.37 | c | 48.48 | 62.03 | 66.84 | 65.06 | n | 52.91 | s | 44.05 | l | 33.50 | p | 24.38 | r | 44.21 | e | ||||
2007 | 25.24 | b | 29.25 | 35.44 | d | 42.52 | e | 48.19 | d | 56.81 | d | 66.76 | f | 66.09 | h | 58.14 | i | 44.97 | 38.53 | 29.00 | 38.88 | c | ||||
2008 | 29.24 | f | 30.46 | c | 33.33 | d | 37.63 | c | 45.41 | i | 57.87 | 65.81 | 64.48 | 56.77 | 43.17 | b | 36.20 | 32.17 | b | 45.79 | b | |||||
2009 | 29.83 | a | 29.58 | b | 34.97 | a | 39.57 | 51.00 | b | 56.07 | c | 68.35 | 63.13 | 58.00 | 44.58 | 35.77 | 27.29 | 44.84 | ||||||||
2010 | 29.61 | h | 36.33 | p | 36.45 | 41.30 | 44.40 | a | 56.81 | c | 68.42 | 66.61 | 60.72 | a | 48.68 | 32.70 | 32.86 | c | 48.90 | b | ||||||
2011 | 27.84 | 29.11 | 38.00 | a | 44.17 | 45.33 | a | 55.67 | 65.83 | b | 68.32 | 59.55 | a | 45.77 | 36.37 | 27.84 | 45.32 | |||||||||
2012 | 29.06 | 29.59 | 32.55 | 41.27 | 47.47 | a | 57.70 | 66.13 | 65.58 | 59.00 | 44.13 | a | 36.90 | 28.13 | 44.79 | |||||||||||
2013 | 22.92 | r | 26.56 | a | 36.74 | 40.83 | 47.42 | 57.25 | b | 67.90 | 64.32 | 57.67 | 39.42 | 38.57 | 28.93 | a | 45.96 | a | ||||||||
2014 | 28.03 | a | 32.41 | a | 37.24 | j | 39.33 | 46.13 | 58.27 | 66.32 | c | 63.77 | 61.76 | a | 47.77 | a | 34.89 | c | 31.32 | 46.36 | a | |||||
2015 | 31.84 | 37.50 | 40.03 | 39.03 | 43.84 | 59.83 | 65.61 | 65.37 | a | 62.71 | i | 54.20 | p | 32.65 | d | 26.65 | 44.24 | b | ||||||||
2016 | 27.52 | 30.34 | 35.55 | 39.03 | 43.74 | 59.57 | 66.71 | 61.84 | 56.20 | 46.10 | 36.30 | 32.48 | 44.62 | |||||||||||||
2017 | 30.71 | 32.93 | 37.55 | 38.50 | 45.97 | 57.83 | 66.06 | 60.94 | 54.40 | 45.29 | 38.70 | 30.29 | 44.93 | |||||||||||||
2018 | 29.74 | 32.71 | 35.74 | 41.03 | 45.03 | 56.83 | 65.87 | 65.00 | 59.10 | 49.29 | 32.10 | 32.47 | l | 46.59 | a | |||||||||||
2019 | 30.10 | 31.04 | 37.12 | g | 40.57 | 42.13 | 52.53 | 64.58 | 64.84 | 59.93 | 42.61 | 40.30 | 31.61 | 45.48 | a | |||||||||||
2020 | 30.42 | 32.55 | 38.48 | 38.50 | 48.32 | 54.53 | 66.90 | 64.94 | 56.47 | 42.90 | 36.83 | 26.16 | 44.75 | |||||||||||||
2021 | 27.97 | 28.64 | 31.03 | 41.62 | a | 45.06 | 58.90 | 66.19 | 63.26 | 57.63 | 40.74 | 34.90 | 31.65 | 43.97 | ||||||||||||
2022 | 27.97 | 24.43 | 30.23 | 39.07 | 44.00 | 59.17 | 62.97 | 65.00 | 58.40 | 45.77 | 29.30 | 27.35 | 42.80 | |||||||||||||
2023 | 25.87 | 22.79 | 28.45 | 30.33 | 40.03 | 50.67 | o | 59.96 | g | 65.17 | b | 56.57 | 46.35 | 38.07 | 29.13 | a | 38.28 | b | ||||||||
2024 | 29.74 | 33.52 | 35.03 | 34.71 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.76 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.73 | 29.76 | 33.85 | 38.80 | 45.07 | 55.12 | 64.32 | 63.02 | 55.96 | 43.99 | 33.68 | 27.98 | 43.10 | |||||||||||||
S.D. | 3.10 | 3.75 | 3.17 | 2.90 | 2.93 | 3.52 | 2.04 | 2.35 | 2.81 | 3.23 | 2.95 | 2.88 | 1.27 | |||||||||||||
SKEW | -0.02 | -0.22 | -0.13 | 0.25 | -0.05 | -0.26 | -0.37 | -0.43 | -0.13 | 0.27 | -0.30 | -0.64 | -0.43 | |||||||||||||
MAX | 36.77 | 37.50 | 41.35 | 49.60 | 51.77 | 62.97 | 68.42 | 68.32 | 62.28 | 53.47 | 40.30 | 33.00 | 45.32 | |||||||||||||
MIN | 19.24 | 19.31 | 25.55 | 30.33 | 37.52 | 46.63 | 57.84 | 56.39 | 50.07 | 36.42 | 26.00 | 19.06 | 39.94 | |||||||||||||
YRS | 65 | 68 | 68 | 70 | 69 | 68 | 67 | 65 | 67 | 69 | 67 | 63 | 47 |