YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.42 | 37.37 | 32.35 | 36.38 | i | |||
1963 | 19.97 | 32.29 | 34.35 | 38.43 | 42.45 | 50.27 | 49.87 | 52.48 | 49.33 | 40.23 | 35.17 | 27.52 | 39.36 | |||||||||||||
1964 | 30.68 | 27.76 | 31.97 | 36.43 | 41.10 | 50.20 | 52.84 | 50.27 | a | 43.20 | 34.10 | 33.80 | 24.29 | 38.05 | ||||||||||||
1965 | 29.71 | 32.75 | 27.48 | 40.33 | 42.13 | a | 48.30 | 53.55 | 55.39 | 41.87 | 38.39 | 35.83 | a | 27.37 | a | 39.42 | ||||||||||
1966 | 29.60 | a | 29.43 | 32.47 | a | 35.53 | 42.13 | 48.20 | 51.32 | 50.45 | 48.90 | 37.58 | 35.00 | a | 33.32 | 39.49 | ||||||||||
1967 | 35.30 | a | 31.79 | 34.03 | 35.10 | 42.45 | 50.93 | 54.00 | 52.74 | 49.43 | 38.32 | 30.53 | 28.13 | 40.23 | ||||||||||||
1968 | 28.19 | 33.90 | 34.94 | 36.13 | 42.94 | 50.17 | 53.97 | 52.42 | 46.90 | 35.65 | 33.77 | 24.35 | 39.44 | |||||||||||||
1969 | 14.74 | 28.93 | 32.13 | 38.67 | 45.23 | 53.14 | a | 53.23 | 49.68 | 48.47 | 35.00 | 31.63 | 30.16 | 38.42 | ||||||||||||
1970 | 27.19 | 34.04 | 32.39 | 34.97 | 44.06 | 53.83 | 56.45 | 49.94 | 42.03 | a | 34.16 | 31.45 | a | 27.42 | 38.99 | |||||||||||
1971 | 32.43 | a | 29.14 | 31.10 | 35.80 | 44.52 | 49.13 | 52.71 | 53.94 | 39.70 | 33.16 | 32.93 | 28.23 | 38.57 | ||||||||||||
1972 | 24.16 | 28.72 | 36.13 | 34.47 | 43.84 | 51.23 | 53.23 | 51.68 | 42.67 | c | 35.32 | 33.27 | 17.97 | 37.72 | ||||||||||||
1973 | 20.23 | 28.11 | 35.52 | 36.00 | 43.77 | 50.17 | 51.29 | 51.94 | 46.40 | 38.06 | 34.40 | 33.19 | 39.09 | |||||||||||||
1974 | 20.58 | 33.07 | 33.10 | b | 39.77 | 43.52 | 49.77 | 53.32 | 51.71 | 40.50 | 31.71 | 35.63 | 30.42 | 38.59 | ||||||||||||
1975 | 26.61 | 26.61 | 30.61 | 34.07 | 41.42 | 47.87 | 56.65 | 49.45 | 39.30 | 40.26 | 30.30 | 30.39 | 37.79 | |||||||||||||
1976 | 30.35 | 29.45 | 30.35 | 34.87 | 40.29 | 44.17 | 51.68 | 52.58 | 44.73 | 31.81 | 32.60 | 24.67 | a | 37.30 | ||||||||||||
1977 | 20.23 | 30.39 | 34.32 | 36.27 | 41.06 | 49.73 | 52.03 | 55.84 | 44.67 | 33.77 | a | 29.33 | 30.26 | 38.16 | ||||||||||||
1978 | 26.26 | 31.54 | 34.17 | a | 39.33 | 42.81 | 47.37 | 53.48 | 52.74 | 44.57 | 29.68 | 22.30 | 21.61 | 37.15 | ||||||||||||
1979 | 7.74 | 28.39 | 32.97 | 39.52 | a | 43.97 | 47.63 | 51.77 | 54.43 | a | 44.97 | 37.71 | 29.50 | 30.71 | 37.44 | |||||||||||
1980 | 19.39 | 29.55 | 33.77 | a | 39.07 | a | 45.57 | a | 48.66 | a | 52.26 | 46.65 | 45.07 | 35.19 | 35.13 | 29.87 | a | 38.35 | ||||||||
1981 | 32.24 | b | 30.18 | 34.03 | 38.27 | 43.32 | 48.37 | 49.97 | b | 49.64 | c | 41.60 | 33.48 | 31.83 | a | 29.00 | 38.49 | |||||||||
1982 | 25.23 | a | 29.44 | a | 32.06 | 32.83 | 40.57 | a | 50.90 | 50.71 | 48.64 | c | 39.80 | 34.03 | 27.93 | 28.48 | 36.72 | |||||||||
1983 | 30.21 | b | 33.25 | 36.23 | 33.76 | a | 42.52 | 47.71 | b | 50.00 | 52.23 | 38.57 | 33.90 | b | 37.93 | b | 16.25 | c | 37.71 | |||||||
1984 | 27.29 | 32.66 | 37.70 | a | 38.14 | a | 42.03 | b | 48.45 | a | 50.19 | 48.40 | a | 43.34 | a | 32.74 | 32.00 | c | 21.48 | b | 37.87 | |||||
1985 | 23.33 | a | 20.41 | a | 30.37 | a | 40.53 | 44.50 | a | 46.31 | a | 52.65 | 47.33 | a | 41.23 | ----- | z | 20.14 | a | 14.83 | a | 34.69 | a | |||
1986 | 26.77 | a | 30.74 | a | 36.65 | 37.47 | 45.80 | a | 52.63 | 54.94 | 54.71 | 45.33 | 36.29 | 35.35 | g | 28.40 | a | 40.88 | a | |||||||
1987 | 23.30 | a | 31.36 | 37.06 | 39.83 | 46.35 | 49.38 | a | 53.71 | 49.35 | 43.73 | 30.29 | 31.67 | c | 26.67 | a | 38.56 | |||||||||
1988 | 25.72 | b | 27.21 | 31.83 | a | 39.77 | 44.32 | 49.97 | a | 51.80 | a | 47.81 | 42.73 | 38.71 | 36.79 | a | 26.55 | b | 38.60 | |||||||
1989 | 30.72 | b | 15.93 | a | 32.77 | 39.60 | 42.71 | 49.73 | 51.57 | c | 52.11 | d | 40.31 | a | 34.83 | b | 36.16 | e | 28.54 | c | 37.92 | |||||
1990 | 33.67 | a | 27.89 | 31.63 | a | 39.86 | a | 43.10 | a | 50.37 | 53.07 | a | 53.42 | 46.30 | 36.21 | b | 35.07 | b | 16.43 | a | 38.92 | |||||
1991 | 23.50 | a | 33.00 | c | 32.33 | a | 38.90 | 44.00 | 47.37 | 52.71 | 52.84 | 41.52 | a | 32.79 | c | 34.25 | b | 31.50 | c | 38.73 | ||||||
1992 | 31.72 | b | 32.97 | 32.90 | 39.70 | 43.26 | 51.97 | 53.32 | c | 50.15 | d | 43.28 | e | 35.97 | b | 34.52 | c | 25.86 | c | 39.63 | ||||||
1993 | 15.33 | a | 22.50 | b | 30.55 | b | 39.20 | 47.58 | 50.60 | 52.81 | 49.65 | 40.89 | b | 36.50 | c | 22.35 | d | 30.41 | b | 36.53 | ||||||
1994 | 31.63 | d | 28.00 | b | 31.10 | 41.56 | c | 46.07 | b | 47.86 | a | 54.58 | 52.17 | a | 44.26 | c | 34.85 | d | 32.33 | c | 30.18 | c | 39.55 | |||
1995 | 28.79 | b | 30.88 | d | 31.76 | b | 35.90 | a | 43.55 | 48.62 | a | 55.42 | 47.90 | 46.14 | a | 36.17 | b | 37.27 | d | 28.50 | i | 40.22 | a | |||
1996 | 27.85 | d | 28.38 | e | 32.93 | a | 39.47 | 42.73 | a | 47.40 | 52.87 | 49.65 | 43.93 | 36.33 | a | 30.50 | j | 24.46 | c | 38.73 | a | |||||
1997 | 24.80 | p | 31.54 | 37.77 | a | 36.70 | 44.97 | 49.60 | 51.52 | 53.80 | a | 46.85 | c | 35.87 | 33.82 | b | 29.64 | c | 41.10 | a | ||||||
1998 | 27.07 | b | 31.75 | d | 32.33 | a | 35.18 | b | 45.44 | d | 50.43 | ----- | z | 53.00 | 49.43 | b | 34.31 | b | 36.96 | c | 26.61 | c | 38.41 | a | ||
1999 | 32.38 | e | 33.37 | a | 32.83 | a | 32.75 | b | 40.13 | 48.64 | b | 50.83 | a | 53.29 | c | 38.12 | f | 32.66 | b | 34.96 | d | 33.33 | a | 38.65 | a | |
2000 | 29.43 | c | 31.62 | c | 32.16 | 38.72 | a | 45.16 | 48.28 | a | 53.42 | 50.77 | a | 42.61 | b | 35.07 | c | 26.00 | e | 27.43 | c | 38.39 | ||||
2001 | 29.17 | a | 26.35 | b | 32.23 | 36.48 | a | 42.57 | a | 46.37 | 53.07 | a | 50.54 | c | 45.00 | b | 34.48 | b | 33.23 | d | 29.83 | b | 38.27 | |||
2002 | 29.62 | b | 27.38 | b | 32.00 | d | 38.21 | b | 42.00 | 50.45 | a | 55.03 | b | 46.82 | c | 41.46 | b | 29.24 | b | 28.57 | b | 33.20 | a | 37.83 | ||
2003 | 34.72 | b | 28.37 | a | 38.29 | c | 38.14 | b | 44.19 | 48.86 | b | 54.71 | 52.81 | 45.07 | a | 38.52 | 26.00 | a | 28.53 | a | 39.85 | |||||
2004 | 23.33 | a | 29.79 | 34.45 | 36.30 | 45.32 | 50.60 | 55.13 | 57.23 | 45.27 | 38.03 | a | 28.48 | a | 29.47 | a | 39.45 | |||||||||
2005 | 26.30 | a | 21.07 | 33.81 | 38.13 | 47.35 | 49.33 | 53.57 | a | 51.93 | a | 41.33 | 37.77 | 31.14 | a | 22.47 | a | 37.85 | ||||||||
2006 | 33.97 | a | 24.11 | 33.45 | 37.20 | 43.52 | 52.10 | 56.58 | 49.90 | 42.50 | b | 33.97 | 32.41 | a | 24.80 | a | 38.71 | |||||||||
2007 | 22.80 | a | 29.82 | 33.45 | 36.60 | 43.06 | 50.80 | 56.87 | 50.61 | 42.37 | 34.87 | 28.10 | a | 29.48 | b | 38.24 | ||||||||||
2008 | 23.21 | b | 30.41 | 30.23 | 33.03 | 45.39 | 48.13 | 52.55 | 50.74 | 39.90 | 31.77 | 32.14 | a | 17.50 | a | 36.25 | ||||||||||
2009 | 26.20 | a | 27.57 | 29.48 | 33.50 | 42.65 | 51.37 | 53.39 | 54.10 | 43.43 | 33.94 | 30.21 | a | 19.20 | a | 37.09 | ||||||||||
2010 | 31.60 | a | 30.25 | 29.13 | 35.33 | 40.77 | 50.50 | 51.81 | 50.90 | 46.60 | 38.84 | 28.28 | a | 27.07 | a | 38.42 | ||||||||||
2011 | 28.43 | a | 24.79 | 32.83 | a | 33.53 | 40.68 | 48.50 | 49.61 | 52.13 | 43.30 | 38.84 | 26.75 | b | 22.80 | a | 36.85 | |||||||||
2012 | 23.25 | c | 29.24 | 31.81 | 36.83 | 41.74 | 48.70 | 54.60 | a | 49.06 | 40.59 | a | 35.06 | 35.00 | b | 31.76 | f | 38.72 | a | |||||||
2013 | 25.12 | e | 28.40 | h | 32.28 | f | 33.32 | e | 42.87 | a | 49.67 | 54.00 | d | 53.46 | c | 49.73 | 28.23 | r | 27.21 | f | 17.88 | f | 44.02 | e | ||
2014 | 28.38 | g | 26.50 | f | 30.50 | e | 35.96 | d | 42.54 | c | 48.52 | a | 56.63 | a | 54.65 | 43.77 | d | 40.44 | d | 27.84 | e | 28.60 | f | 42.32 | c | |
2015 | 29.04 | f | 30.86 | f | 32.65 | e | 33.54 | d | 45.37 | d | 52.60 | 55.45 | 52.13 | 43.33 | c | 38.64 | f | 31.13 | g | 29.92 | f | 45.01 | e | |||
2016 | 27.62 | g | 29.39 | f | 33.00 | d | 39.88 | d | 43.48 | d | 48.17 | 53.39 | 49.65 | 42.93 | c | 41.84 | f | 35.58 | f | 18.28 | f | 44.36 | e | |||
2017 | 12.04 | g | 24.09 | e | 36.30 | d | 36.88 | e | 42.00 | c | 49.43 | 52.55 | 51.39 | 44.96 | c | 33.48 | f | 32.04 | f | 25.12 | e | 40.30 | c | |||
2018 | 32.00 | f | 28.70 | e | 29.56 | d | 37.36 | e | 47.36 | c | 47.43 | 51.94 | 51.21 | b | 42.24 | a | 35.12 | f | 31.21 | f | 30.12 | n | 41.97 | d | ||
2019 | ----- | z | 17.42 | d | 22.46 | e | 39.04 | d | 42.82 | c | 49.60 | 51.07 | b | 52.32 | 47.92 | e | 29.77 | e | 24.42 | f | 28.41 | i | 39.16 | c | ||
2020 | 27.06 | n | 25.38 | m | 27.85 | r | 32.38 | v | 40.88 | n | 50.00 | j | 50.67 | j | 52.23 | e | 43.67 | i | 35.63 | a | 29.76 | m | 26.04 | g | 43.93 | j |
2021 | 29.48 | 25.96 | 29.57 | a | 31.23 | 40.58 | 50.70 | 55.77 | a | 53.32 | 42.67 | 35.48 | 34.03 | 27.55 | b | 38.03 | ||||||||||
2022 | 24.20 | a | 23.86 | 35.03 | 32.73 | 40.74 | 48.70 | 55.10 | 53.45 | 44.47 | 38.71 | 27.00 | 19.81 | d | 36.98 | |||||||||||
2023 | 24.52 | 25.00 | 29.55 | 35.87 | 44.74 | 48.52 | a | 51.42 | 54.07 | d | 46.93 | b | 38.36 | c | 30.87 | 32.74 | 38.55 | |||||||||
2024 | 21.77 | 31.83 | 31.30 | a | 33.52 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.30 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.43 | 28.68 | 32.66 | 36.87 | 43.39 | 49.41 | 53.12 | 51.57 | 43.90 | 35.43 | 31.74 | 26.75 | 38.30 | |||||||||||||
S.D. | 5.33 | 3.92 | 2.66 | 2.45 | 1.83 | 1.75 | 1.85 | 2.25 | 2.78 | 2.76 | 4.01 | 4.72 | 0.93 | |||||||||||||
SKEW | -0.95 | -1.22 | -0.59 | -0.25 | 0.30 | 0.03 | 0.19 | -0.08 | 0.34 | -0.22 | -0.83 | -0.84 | -0.16 | |||||||||||||
MAX | 35.30 | 34.04 | 38.29 | 41.56 | 47.58 | 53.83 | 56.87 | 57.23 | 49.73 | 40.44 | 37.93 | 33.33 | 40.23 | |||||||||||||
MIN | 7.74 | 15.93 | 22.46 | 31.23 | 40.13 | 44.17 | 49.61 | 46.65 | 38.57 | 29.24 | 20.14 | 14.83 | 36.25 | |||||||||||||
YRS | 54 | 57 | 60 | 60 | 60 | 60 | 59 | 61 | 59 | 56 | 53 | 53 | 45 |