YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | 36.20 | u | 41.74 | c | 52.71 | 57.43 | 56.90 | 57.03 | 52.53 | 41.72 | b | 29.33 | 33.71 | 47.01 | c | |||||||
1958 | 30.94 | 37.43 | 32.55 | 41.07 | 52.65 | 59.33 | 63.16 | 63.55 | 51.30 | 39.26 | 32.40 | 30.29 | 44.49 | |||||||||||||
1959 | 26.23 | 29.57 | 35.00 | 40.20 | 43.74 | 54.93 | 59.16 | 56.35 | 50.03 | 40.94 | 26.23 | 26.16 | 40.71 | |||||||||||||
1960 | 16.77 | 28.79 | 33.77 | 41.47 | 46.29 | 53.70 | 63.74 | 58.23 | 50.40 | 44.52 | 34.43 | 26.29 | 41.53 | |||||||||||||
1961 | 29.90 | 38.08 | b | 38.61 | 41.62 | a | 48.65 | 58.77 | 63.45 | 62.29 | 47.07 | a | 39.45 | 25.13 | 28.42 | 43.45 | ||||||||||
1962 | 22.40 | a | 28.89 | 32.53 | a | 43.38 | a | 47.55 | 53.40 | 59.65 | 59.10 | 51.80 | 44.37 | a | 37.07 | a | 32.45 | 42.72 | ||||||||
1963 | 18.87 | 30.54 | 34.87 | 41.17 | 48.10 | 54.13 | 58.84 | 60.16 | 55.60 | 44.94 | 37.47 | 27.81 | 42.71 | |||||||||||||
1964 | 31.23 | 27.65 | c | 32.42 | 39.03 | 46.29 | 53.80 | 59.94 | 55.55 | 49.13 | 39.00 | 35.40 | 24.26 | 41.14 | ||||||||||||
1965 | 30.58 | 32.32 | 30.48 | 43.93 | 47.13 | a | 54.40 | 60.43 | a | 61.35 | 48.70 | 44.45 | 39.03 | 28.61 | 43.45 | |||||||||||
1966 | 30.39 | 29.43 | 34.71 | 41.03 | 48.94 | 54.40 | 59.32 | 59.97 | 56.53 | 43.16 | 36.28 | a | 33.65 | 43.98 | ||||||||||||
1967 | 35.48 | 33.39 | 34.26 | 38.63 | 47.74 | 56.03 | 62.58 | 63.29 | 57.33 | 43.97 | 32.87 | 28.33 | a | 44.49 | ||||||||||||
1968 | 29.17 | a | 32.34 | 37.10 | 38.62 | a | 48.81 | 55.67 | 62.71 | 60.39 | 53.40 | 41.00 | 35.20 | 25.97 | 43.36 | |||||||||||
1969 | 16.74 | 26.54 | 33.06 | 41.77 | 49.10 | 57.97 | 57.97 | 56.03 | 52.00 | 39.52 | 34.40 | 31.74 | 41.40 | |||||||||||||
1970 | 28.10 | 34.54 | 33.68 | 37.97 | 46.81 | 55.33 | 61.35 | 57.35 | 47.77 | 38.65 | 32.63 | 27.90 | 41.84 | |||||||||||||
1971 | 30.45 | 30.00 | 32.00 | 39.03 | 46.97 | 52.17 | 58.90 | 63.35 | 47.00 | 39.65 | 34.70 | 28.72 | b | 41.91 | ||||||||||||
1972 | 26.40 | a | 29.00 | a | 37.61 | 34.60 | 47.13 | 53.50 | 58.87 | ----- | z | 48.83 | 40.26 | 34.27 | 21.87 | 39.30 | a | |||||||||
1973 | 22.42 | 29.36 | 36.23 | 38.80 | 45.97 | 53.50 | 58.58 | 58.77 | 51.03 | 43.23 | 35.73 | 34.74 | 42.36 | |||||||||||||
1974 | 22.35 | 34.36 | 35.38 | b | 41.40 | 45.58 | 53.83 | 57.71 | 58.90 | 50.30 | 39.00 | a | 38.77 | 34.13 | 42.64 | |||||||||||
1975 | 29.32 | 27.89 | 33.19 | 36.47 | 45.19 | 50.97 | 62.00 | b | 56.50 | a | 47.64 | b | 44.16 | 33.07 | 30.48 | 41.41 | ||||||||||
1976 | 30.13 | a | 30.25 | a | 31.10 | 37.66 | a | 45.19 | 48.83 | 57.48 | 56.62 | b | 51.47 | 38.68 | 31.53 | 25.77 | 40.39 | |||||||||
1977 | 23.35 | 32.39 | 35.23 | 42.27 | 43.87 | 54.38 | a | 56.74 | 60.61 | 48.90 | 37.58 | 30.90 | 30.71 | 41.41 | ||||||||||||
1978 | 26.00 | 31.54 | b | 33.83 | b | 39.86 | b | 43.52 | 51.67 | 55.87 | 57.59 | b | 49.97 | a | 36.65 | 26.47 | 23.39 | 39.69 | ||||||||
1979 | 11.74 | d | 27.50 | 31.97 | 39.41 | a | ----- | z | 51.93 | ----- | z | 59.48 | 50.43 | 45.16 | 31.75 | b | 33.07 | a | 38.25 | b | ||||||
1980 | ----- | z | ----- | z | 33.13 | 40.37 | 47.45 | 51.59 | a | 58.83 | a | 56.52 | 52.34 | a | 40.33 | a | 37.83 | 32.61 | 45.10 | b | ||||||
1981 | 33.94 | 32.07 | a | 34.77 | 40.13 | 46.90 | a | 51.72 | a | 56.94 | 58.87 | 49.54 | b | 38.66 | b | 34.27 | 28.97 | 42.23 | ||||||||
1982 | 23.23 | e | 28.58 | b | 32.50 | c | 36.14 | a | 45.76 | b | 53.97 | 58.71 | 59.77 | a | 51.13 | 41.00 | 31.93 | b | 29.27 | a | 41.00 | |||||
1983 | 32.77 | a | 34.89 | 38.79 | b | 39.33 | 48.04 | c | 53.45 | a | 56.63 | a | 61.58 | 46.68 | b | 39.39 | 39.27 | 18.41 | b | 42.44 | ||||||
1984 | 26.90 | 31.83 | 37.10 | b | 40.27 | ----- | z | 51.34 | a | 57.77 | 58.39 | 48.10 | a | 37.90 | a | 33.43 | 20.23 | 40.30 | a | |||||||
1985 | 23.42 | 22.54 | b | 31.77 | a | 41.48 | a | 48.40 | a | 53.48 | a | 62.45 | ----- | z | 47.30 | 40.13 | ----- | z | 18.07 | a | 38.90 | b | ||||
1986 | 27.60 | a | 30.64 | 38.52 | 38.76 | a | 47.35 | 55.87 | 55.19 | 59.55 | b | 48.93 | a | 40.77 | 37.55 | a | 29.16 | 42.49 | ||||||||
1987 | 24.57 | a | 30.59 | a | 36.47 | a | 43.67 | 50.74 | 54.93 | 59.77 | a | 57.77 | 53.00 | 38.06 | 35.83 | 28.39 | 42.82 | |||||||||
1988 | 26.68 | 28.52 | 35.06 | 41.20 | 47.10 | a | 54.77 | 58.61 | 56.94 | 48.93 | b | 44.48 | 38.63 | 27.81 | 42.39 | |||||||||||
1989 | 31.30 | a | 19.11 | 33.48 | b | 42.43 | b | 47.53 | a | 56.24 | a | 58.93 | a | 58.53 | a | 49.29 | f | 41.39 | 37.40 | 30.52 | 41.53 | a | ||||
1990 | 33.31 | b | 28.15 | b | 34.95 | l | 43.78 | c | 47.65 | 54.61 | b | 61.32 | 61.32 | 54.63 | 41.68 | 38.07 | a | 18.94 | 43.95 | a | ||||||
1991 | 23.03 | b | 33.68 | 32.84 | 40.33 | 47.10 | 51.60 | 60.45 | 62.26 | ----- | z | 39.87 | a | 36.48 | a | 33.87 | 41.96 | a | ||||||||
1992 | 32.97 | 35.72 | ----- | z | 43.83 | a | 47.79 | b | 58.93 | 60.73 | a | 59.33 | a | 49.20 | 40.90 | 36.10 | a | 26.70 | a | 44.75 | a | |||||
1993 | 17.79 | c | 23.48 | a | 33.65 | n | 42.37 | 51.87 | ----- | z | 57.23 | a | 56.87 | 50.73 | 43.90 | a | 27.77 | 32.74 | 40.48 | b | ||||||
1994 | 33.58 | 28.96 | 34.80 | a | 45.24 | a | ----- | z | 54.00 | 62.58 | 63.10 | b | 53.83 | a | 42.52 | 34.10 | 30.35 | 43.92 | a | |||||||
1995 | 27.81 | d | 33.30 | a | 33.53 | a | 40.73 | 48.57 | a | 53.93 | 60.90 | 55.81 | 52.67 | 41.41 | b | 37.93 | 30.35 | 43.08 | ||||||||
1996 | 27.63 | a | 26.85 | c | 34.61 | 42.47 | 45.65 | 52.17 | 59.77 | 55.97 | a | 49.73 | 41.42 | 33.72 | a | 25.19 | 41.27 | |||||||||
1997 | 27.19 | 31.54 | 37.06 | 39.37 | 49.13 | 54.24 | a | 58.43 | a | 60.84 | 51.66 | a | 41.94 | 35.77 | 31.55 | 43.23 | ||||||||||
1998 | 29.39 | 34.11 | a | 36.93 | a | 40.60 | 49.81 | 54.77 | 64.90 | 59.55 | 56.40 | 39.37 | a | 40.69 | a | 27.58 | 44.51 | |||||||||
1999 | 33.87 | 34.39 | 34.68 | 36.27 | 43.70 | a | 53.23 | 55.97 | a | 56.68 | 46.67 | 38.47 | a | 38.72 | a | 34.93 | a | 42.30 | ||||||||
2000 | 30.81 | 31.07 | a | 36.17 | a | 42.62 | a | 48.26 | 51.14 | b | 58.60 | a | 58.45 | b | 50.69 | a | 41.13 | 29.33 | 28.45 | 42.23 | ||||||
2001 | 29.57 | a | 28.21 | 34.61 | 40.20 | 47.13 | a | 51.60 | 60.86 | b | 60.67 | a | 51.03 | a | 40.03 | b | 36.46 | b | 32.26 | d | 42.72 | |||||
2002 | 31.19 | d | 28.19 | a | 33.20 | a | 40.14 | b | 43.86 | c | 54.93 | a | 60.77 | 56.16 | 49.63 | 37.45 | 33.93 | 34.74 | 42.02 | |||||||
2003 | 34.69 | b | 29.89 | a | 40.50 | a | 41.87 | 47.35 | 54.93 | 61.73 | a | 60.23 | 52.53 | 45.90 | a | 29.37 | 31.55 | 44.21 | ||||||||
2004 | 25.63 | a | 31.26 | b | 36.19 | d | 42.57 | 49.87 | 55.57 | 62.29 | 62.63 | a | 51.79 | a | 44.34 | b | 33.72 | a | 31.84 | 43.98 | ||||||
2005 | 26.84 | 24.04 | d | 37.19 | ----- | z | 51.28 | b | 54.17 | 60.61 | 59.48 | b | 50.37 | 45.19 | d | 35.50 | 23.41 | d | 42.55 | a | ||||||
2006 | 35.71 | j | 26.07 | 34.97 | a | 41.30 | 47.65 | 56.43 | 62.97 | a | 58.32 | 51.50 | 41.52 | 35.45 | a | 27.13 | a | 43.94 | a | |||||||
2007 | 24.71 | 31.93 | 36.84 | 40.57 | 48.29 | 54.14 | a | 64.10 | a | 57.23 | 49.17 | 41.35 | 33.90 | 30.73 | a | 42.75 | ||||||||||
2008 | 23.61 | 33.24 | 34.00 | 35.90 | 48.64 | c | 52.21 | a | 60.47 | a | 57.60 | a | 48.80 | 38.87 | 37.53 | 21.97 | 41.07 | |||||||||
2009 | 27.87 | 28.41 | a | 32.52 | 39.71 | b | 46.94 | 56.11 | b | 60.61 | c | 61.06 | 50.60 | 39.48 | 34.80 | 21.32 | 41.62 | |||||||||
2010 | 32.59 | b | 32.89 | 34.32 | 39.27 | 45.81 | 53.83 | a | 59.32 | c | 57.80 | a | 53.10 | 44.00 | a | 34.20 | 29.43 | a | 43.05 | |||||||
2011 | 29.35 | 26.92 | b | 35.65 | 37.21 | b | 45.89 | c | 52.55 | a | 55.45 | 60.23 | 51.39 | b | 45.31 | b | 31.97 | 26.39 | 41.53 | |||||||
2012 | 26.90 | 31.56 | b | 35.48 | 41.77 | 46.27 | a | 52.52 | a | 61.29 | 58.39 | ----- | z | 41.87 | ----- | z | 32.33 | m | 44.00 | c | ||||||
2013 | 27.45 | ----- | z | 34.48 | ----- | z | ----- | z | ----- | z | ----- | z | 60.77 | 55.47 | ----- | z | 32.33 | 20.81 | 38.55 | f | ||||||
2014 | 29.55 | ----- | z | 35.00 | ----- | z | 47.14 | b | 54.20 | 63.06 | 61.35 | 50.45 | a | 48.33 | a | 31.60 | 30.42 | 45.11 | b | |||||||
2015 | 31.35 | 33.14 | 37.65 | ----- | z | ----- | z | 59.24 | a | 62.26 | 61.06 | 50.50 | 46.03 | 33.47 | 31.45 | 44.62 | b | |||||||||
2016 | 29.32 | 33.24 | 36.52 | 44.83 | 49.73 | a | 53.72 | a | 60.23 | 58.83 | b | 49.83 | 46.52 | 39.47 | 23.87 | 43.84 | ||||||||||
2017 | 16.68 | 26.29 | 38.11 | c | 40.17 | 48.03 | 54.34 | a | 62.03 | 60.39 | 52.27 | 41.06 | 36.07 | 27.55 | 41.91 | |||||||||||
2018 | 33.55 | 31.11 | 32.19 | 41.73 | 52.57 | a | 54.68 | b | 59.71 | 59.87 | a | 50.52 | a | 41.29 | 32.84 | e | 33.03 | 43.59 | ||||||||
2019 | 31.35 | 20.37 | a | 26.84 | 42.63 | 49.13 | 55.37 | 58.53 | a | 61.42 | 55.83 | a | 36.93 | a | 30.57 | 30.61 | 41.63 | |||||||||
2020 | 33.19 | 30.17 | 34.03 | 38.93 | 48.32 | 54.60 | 59.19 | 60.32 | 52.87 | 44.61 | 34.40 | 29.87 | a | 43.38 | ||||||||||||
2021 | 31.52 | 26.86 | 33.26 | 39.60 | 48.32 | 59.53 | 65.35 | 60.97 | 51.90 | 44.06 | 39.43 | 30.61 | 44.29 | |||||||||||||
2022 | 26.71 | 27.21 | 37.26 | 38.03 | 46.42 | 54.07 | 62.77 | 63.34 | b | 53.17 | 47.52 | 31.43 | ----- | z | 44.36 | a | ||||||||||
2023 | ----- | z | ----- | z | ----- | z | 40.43 | 52.57 | a | 56.80 | ----- | z | 62.10 | ----- | z | ----- | z | ----- | z | ----- | z | 52.97 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.63 | 30.05 | 34.72 | 40.47 | 47.71 | 54.33 | 60.06 | 59.40 | 51.02 | 41.63 | 34.35 | 28.46 | 42.48 | |||||||||||||
S.D. | 5.00 | 3.69 | 2.34 | 2.21 | 2.18 | 2.17 | 2.38 | 2.17 | 2.49 | 2.76 | 3.40 | 4.25 | 1.16 | |||||||||||||
SKEW | -0.96 | -0.54 | -0.27 | -0.30 | 0.41 | 0.43 | 0.04 | 0.08 | 0.50 | 0.34 | -0.56 | -0.70 | -0.05 | |||||||||||||
MAX | 35.48 | 38.08 | 40.50 | 45.24 | 52.71 | 59.53 | 65.35 | 63.55 | 57.33 | 48.33 | 40.69 | 34.93 | 44.51 | |||||||||||||
MIN | 11.74 | 19.11 | 26.84 | 34.60 | 43.52 | 48.83 | 55.19 | 55.55 | 46.67 | 36.65 | 25.13 | 18.07 | 39.69 | |||||||||||||
YRS | 63 | 62 | 62 | 63 | 62 | 65 | 64 | 65 | 63 | 65 | 64 | 64 | 47 |