YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.80 | 42.94 | 33.17 | 30.65 | 38.64 | h | ||||
1961 | 31.48 | 32.79 | 32.52 | 37.50 | 42.24 | b | 49.87 | 53.61 | 56.32 | 45.50 | 38.13 | 30.50 | 28.61 | 39.92 | ||||||||||||
1962 | 28.07 | b | 29.86 | 28.87 | a | 37.24 | a | 41.48 | 47.30 | 50.87 | 52.27 | a | 49.30 | 43.19 | 37.45 | a | 33.13 | 39.92 | ||||||||
1963 | 23.94 | 33.25 | 33.45 | 37.93 | 43.23 | 49.93 | 52.61 | 55.94 | 52.60 | 44.32 | 34.52 | a | 31.97 | 41.14 | ||||||||||||
1964 | 32.29 | 30.79 | 32.32 | 35.33 | 40.26 | 48.17 | 51.77 | 51.61 | 47.77 | 42.52 | 34.77 | 26.72 | b | 39.53 | ||||||||||||
1965 | 28.84 | 30.89 | 28.90 | 37.47 | 41.06 | 48.43 | 54.39 | 55.81 | 47.23 | 43.61 | 38.43 | 29.71 | 40.40 | |||||||||||||
1966 | 27.67 | a | 30.39 | 31.74 | 36.90 | 42.52 | 48.57 | 52.30 | a | 54.26 | 51.40 | 40.71 | 36.73 | 34.48 | 40.64 | |||||||||||
1967 | 31.94 | 32.00 | 30.90 | 35.30 | 43.42 | 51.07 | 53.31 | b | 56.68 | 51.83 | a | 42.57 | a | 36.24 | a | 29.52 | 41.23 | |||||||||
1968 | 27.90 | a | 31.62 | 34.94 | 35.23 | 43.42 | 47.57 | 54.13 | 53.52 | 49.03 | 40.26 | 36.53 | 29.56 | d | 40.31 | |||||||||||
1969 | 23.36 | i | 26.11 | a | 30.52 | 36.60 | 44.61 | 52.23 | 51.39 | 52.13 | 49.45 | a | 41.73 | a | 37.97 | 33.58 | 41.48 | a | ||||||||
1970 | 28.80 | a | 33.39 | 32.74 | 34.93 | 42.13 | 51.07 | 52.61 | 53.35 | 45.77 | 40.19 | 34.30 | 28.48 | 39.81 | ||||||||||||
1971 | 26.73 | a | 31.00 | 29.32 | 34.37 | 42.23 | 46.43 | 51.77 | a | 55.84 | 45.87 | 40.16 | 35.27 | 25.61 | 38.72 | |||||||||||
1972 | 26.19 | e | 27.61 | a | 33.33 | a | 34.13 | 43.06 | 47.60 | 51.39 | 54.13 | 44.67 | 40.26 | 36.17 | 26.47 | a | 38.75 | |||||||||
1973 | 25.52 | 31.07 | 33.52 | 36.70 | 41.63 | a | 46.73 | 53.37 | a | 51.94 | 51.52 | a | 41.00 | 32.63 | 34.20 | a | 39.99 | |||||||||
1974 | 27.03 | 32.50 | 32.00 | 38.14 | a | 41.00 | a | 48.53 | 51.57 | c | 55.00 | 51.63 | 43.16 | 37.52 | a | 33.68 | 40.98 | |||||||||
1975 | 28.32 | 25.11 | 30.42 | 34.14 | a | 41.06 | 48.41 | a | 55.16 | 51.00 | b | 50.03 | 42.31 | e | 31.23 | d | 30.97 | 39.01 | ||||||||
1976 | 31.03 | 30.14 | a | 29.20 | a | 35.07 | 41.65 | 46.28 | a | 50.90 | 53.06 | 50.86 | a | 42.45 | 37.47 | 34.48 | 40.22 | |||||||||
1977 | 28.10 | a | 33.76 | c | 33.42 | 38.13 | 42.00 | c | 50.97 | a | 52.10 | 58.47 | a | 48.72 | a | 40.50 | a | 30.76 | a | 28.32 | 40.44 | |||||
1978 | 29.06 | 31.54 | b | 35.26 | 37.93 | a | 42.38 | b | 50.73 | d | 54.73 | i | 54.00 | 48.69 | a | 43.00 | 30.93 | c | 27.69 | b | 39.20 | a | ||||
1979 | 21.00 | a | 26.79 | 32.53 | a | 36.83 | 43.77 | a | 47.66 | a | 52.93 | a | 55.52 | 50.73 | d | 44.19 | 34.61 | b | 33.52 | b | 40.01 | |||||
1980 | 24.14 | c | 31.43 | a | 32.48 | 39.00 | 45.03 | 48.86 | a | 52.96 | c | 52.31 | b | 49.00 | a | 42.58 | 37.00 | a | 32.29 | 40.59 | ||||||
1981 | 35.29 | 32.07 | 34.94 | 37.89 | c | 44.77 | a | 46.70 | 54.04 | d | 56.97 | b | 49.46 | f | 40.83 | b | 37.03 | 31.21 | b | 41.07 | a | |||||
1982 | 27.16 | 28.07 | 32.07 | a | 33.33 | f | 42.13 | 52.14 | b | 51.81 | d | 53.93 | b | 49.75 | f | 41.50 | a | 31.93 | a | 30.83 | a | 39.16 | b | |||
1983 | 33.48 | 33.92 | b | 35.70 | a | 37.43 | 45.77 | a | 49.64 | b | 52.14 | b | 54.93 | a | 46.14 | b | 40.57 | a | 37.70 | 23.59 | b | 40.92 | ||||
1984 | 31.39 | 32.79 | 36.17 | a | ----- | z | 40.35 | e | 48.14 | a | 52.69 | b | 54.55 | 46.43 | 39.65 | 33.42 | d | 25.74 | 40.12 | a | ||||||
1985 | 28.60 | a | 27.11 | 31.10 | 37.00 | b | 44.19 | d | 48.07 | a | 55.27 | a | 53.41 | b | 45.93 | 39.57 | a | 24.96 | d | 27.31 | b | 38.54 | ||||
1986 | 32.68 | c | 28.18 | 36.19 | 37.93 | 43.43 | a | 51.90 | 52.32 | 57.74 | 49.20 | 44.27 | a | 34.50 | 30.71 | 41.59 | ||||||||||
1987 | 29.52 | 33.39 | 35.39 | 40.27 | 45.32 | 50.60 | 55.17 | a | 54.39 | 51.40 | 44.68 | 39.90 | 30.19 | 42.52 | ||||||||||||
1988 | 28.00 | 31.38 | 34.35 | 38.97 | a | 44.40 | a | 48.90 | 52.84 | 54.58 | 48.73 | 45.90 | 36.43 | b | 31.61 | 41.34 | ||||||||||
1989 | 30.16 | 24.79 | d | 31.19 | 38.46 | b | 43.26 | 51.30 | 53.55 | 54.29 | g | 50.79 | a | 41.97 | 37.57 | 35.03 | 39.83 | a | ||||||||
1990 | 31.97 | a | 26.04 | 33.67 | a | 40.53 | 44.63 | a | 49.50 | 56.55 | 57.06 | 52.53 | 39.42 | 36.40 | 26.48 | f | 42.57 | a | ||||||||
1991 | 25.32 | 34.25 | 31.06 | 37.30 | 43.87 | a | 48.20 | 53.48 | 55.55 | 50.62 | a | 41.26 | 37.10 | 34.28 | b | 41.02 | ||||||||||
1992 | 32.42 | 34.93 | 37.90 | 40.40 | 46.58 | 54.07 | 56.35 | 55.77 | 46.70 | 44.39 | 35.97 | 26.77 | 42.69 | |||||||||||||
1993 | 21.03 | ----- | z | 34.35 | 38.40 | 48.77 | a | 50.17 | a | 52.84 | 54.68 | 49.57 | 45.13 | 31.70 | 32.35 | 41.73 | a | |||||||||
1994 | 36.39 | 28.96 | 34.53 | a | 41.50 | 46.42 | 48.83 | a | 55.87 | 55.83 | b | 51.93 | 41.74 | 31.31 | a | 29.26 | 41.88 | |||||||||
1995 | 29.97 | 31.68 | 32.84 | 37.74 | c | 46.65 | 50.73 | 56.42 | 50.94 | 53.43 | 41.61 | 37.03 | 30.43 | a | 41.62 | |||||||||||
1996 | 29.82 | c | 27.83 | 32.55 | 38.57 | 41.39 | 48.10 | 55.03 | 55.16 | 48.47 | 41.35 | 32.83 | 25.06 | 39.68 | ||||||||||||
1997 | 28.86 | b | 30.43 | 32.58 | 36.00 | a | 44.19 | 47.66 | a | 52.42 | 56.52 | 51.13 | 41.87 | a | 37.80 | 32.39 | 40.99 | |||||||||
1998 | 28.45 | 33.68 | 35.48 | 38.13 | 46.48 | 52.63 | 58.33 | a | 56.65 | 52.24 | a | 42.87 | 37.30 | 29.13 | 42.62 | |||||||||||
1999 | 32.19 | 30.89 | 31.84 | 35.17 | 40.03 | 47.63 | 51.23 | 55.26 | 48.57 | 41.23 | 37.50 | 33.40 | a | 40.41 | ||||||||||||
2000 | 29.71 | 31.59 | 33.90 | 38.80 | 43.35 | 48.31 | a | 53.19 | 52.81 | 48.21 | a | 42.20 | a | 33.45 | a | 29.52 | 40.42 | |||||||||
2001 | 32.74 | 29.04 | a | 34.26 | 36.80 | 42.65 | 48.33 | 53.65 | 55.06 | 50.83 | 40.90 | 37.20 | 30.71 | 41.01 | ||||||||||||
2002 | 31.52 | 29.79 | 28.30 | a | 36.70 | 41.58 | 49.10 | a | 53.94 | 54.77 | 49.57 | 41.65 | 37.80 | 34.16 | 40.74 | |||||||||||
2003 | 34.00 | 32.25 | 33.47 | a | 38.27 | 42.87 | 51.13 | 55.65 | 55.29 | 50.93 | a | 44.74 | 31.13 | 31.30 | a | 41.75 | ||||||||||
2004 | 28.39 | 33.28 | 35.26 | 39.83 | 46.13 | 51.07 | 57.03 | 57.77 | 47.90 | 43.34 | b | 36.47 | 34.26 | 42.56 | ||||||||||||
2005 | 28.32 | 30.68 | 35.19 | 38.86 | a | 48.58 | 50.87 | 54.68 | 55.80 | a | 48.45 | a | 44.10 | 35.10 | 31.97 | 41.88 | ||||||||||
2006 | 33.97 | 28.89 | 32.37 | a | 38.10 | 43.03 | a | 51.43 | 56.35 | 55.33 | a | 50.73 | 42.90 | 33.28 | a | 30.58 | 41.41 | |||||||||
2007 | 28.19 | 32.50 | 34.61 | 37.47 | 43.74 | 49.40 | 56.03 | 54.10 | 49.47 | 41.10 | 34.47 | 30.23 | 40.94 | |||||||||||||
2008 | 26.71 | 30.86 | a | 32.03 | 33.57 | 43.94 | 47.90 | 53.65 | 55.00 | 48.50 | 41.45 | 37.87 | 26.57 | a | 39.84 | |||||||||||
2009 | 28.10 | 29.07 | 28.16 | 36.00 | 41.87 | 51.17 | 57.00 | 55.52 | 51.00 | 40.94 | 35.77 | 27.39 | 40.16 | |||||||||||||
2010 | 34.00 | 34.61 | 35.06 | 37.93 | 42.26 | 48.63 | 53.84 | 55.35 | 50.83 | 43.23 | 32.40 | 30.45 | 41.55 | |||||||||||||
2011 | 29.71 | 26.64 | 32.26 | 33.87 | 41.52 | 48.40 | 50.90 | 54.06 | 51.80 | 42.06 | 31.90 | 30.23 | 39.45 | |||||||||||||
2012 | 28.50 | a | 30.83 | 31.26 | 37.77 | 42.84 | 47.17 | 54.13 | 56.65 | 50.90 | 42.58 | 36.77 | 31.58 | 40.91 | ||||||||||||
2013 | 29.03 | 32.71 | 33.26 | 37.83 | 45.39 | 49.73 | 55.87 | 57.16 | 52.93 | 41.42 | 35.77 | 27.61 | 41.56 | |||||||||||||
2014 | 33.19 | 26.82 | 32.52 | 37.40 | 45.45 | 49.47 | 56.48 | 58.13 | 51.73 | 46.23 | 34.20 | 32.58 | 42.02 | |||||||||||||
2015 | 33.06 | 35.96 | 37.10 | 37.83 | 48.90 | 55.03 | 59.23 | 57.91 | i | 48.27 | 46.52 | 34.03 | 31.65 | 42.51 | a | |||||||||||
2016 | 30.94 | 34.83 | 35.77 | 43.20 | 47.90 | 51.17 | 55.65 | 57.03 | 49.77 | 42.94 | 40.00 | 25.23 | 42.87 | |||||||||||||
2017 | 23.68 | 27.36 | 33.23 | 38.23 | 44.61 | 50.73 | 55.10 | 58.74 | 52.83 | 40.61 | 35.13 | 30.03 | 40.86 | |||||||||||||
2018 | 32.19 | 27.46 | 32.77 | 38.03 | 48.52 | 49.93 | 56.97 | 58.03 | 49.50 | 42.65 | 36.93 | 30.55 | 41.96 | |||||||||||||
2019 | 31.90 | 21.00 | 30.19 | 38.87 | 47.23 | 50.80 | 55.16 | 56.90 | 51.80 | 38.84 | 35.43 | 32.32 | 40.87 | |||||||||||||
2020 | 28.32 | 30.41 | 30.94 | 36.40 | 44.58 | 48.43 | 53.32 | 54.23 | 53.57 | 42.42 | 34.60 | 33.00 | 40.85 | |||||||||||||
2021 | 31.48 | 28.18 | 32.61 | 36.40 | 43.39 | 52.33 | 57.48 | 56.90 | 49.40 | 40.71 | 36.03 | 26.76 | b | 40.97 | ||||||||||||
2022 | 27.85 | d | 29.25 | 34.10 | 33.33 | 41.29 | 49.13 | 55.16 | 59.42 | 53.33 | 46.45 | 30.63 | 24.81 | e | 40.40 | |||||||||||
2023 | 31.32 | 28.89 | 30.23 | 35.07 | 48.81 | 50.73 | 56.48 | 51.87 | a | 51.60 | 44.55 | 35.50 | 34.35 | 41.62 | ||||||||||||
2024 | 30.21 | c | 32.48 | 32.70 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.80 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.49 | 30.44 | 32.87 | 37.33 | 43.83 | 49.55 | 54.10 | 55.13 | 49.79 | 42.25 | 35.07 | 30.33 | 40.82 | |||||||||||||
S.D. | 3.15 | 2.89 | 2.16 | 1.92 | 2.31 | 1.85 | 2.01 | 1.96 | 2.18 | 1.85 | 2.71 | 2.87 | 1.02 | |||||||||||||
SKEW | -0.42 | -0.62 | -0.13 | 0.18 | 0.62 | 0.52 | 0.33 | -0.15 | -0.37 | 0.35 | -0.95 | -0.37 | -0.12 | |||||||||||||
MAX | 36.39 | 35.96 | 37.90 | 43.20 | 48.90 | 55.03 | 59.23 | 59.42 | 53.57 | 46.52 | 40.00 | 35.03 | 42.87 | |||||||||||||
MIN | 21.00 | 21.00 | 28.16 | 33.33 | 40.03 | 46.28 | 50.87 | 50.94 | 44.67 | 38.13 | 24.96 | 23.59 | 38.54 | |||||||||||||
YRS | 63 | 63 | 64 | 61 | 63 | 63 | 62 | 61 | 62 | 64 | 64 | 63 | 54 |