YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | ----- | z | ----- | z | ----- | z | 34.73 | 43.13 | 50.97 | 57.16 | 53.67 | a | 47.60 | 41.20 | a | 22.37 | 17.74 | 40.95 | c | |||||||
1973 | 16.45 | 22.54 | 25.58 | 28.07 | 40.58 | 48.73 | 54.55 | 52.87 | 44.00 | 35.19 | d | 27.77 | 18.26 | 34.55 | ||||||||||||
1974 | 17.03 | 17.14 | 30.55 | 31.27 | 45.26 | 53.40 | 55.48 | 50.97 | 44.63 | 39.65 | 25.33 | 14.10 | a | 35.40 | ||||||||||||
1975 | 13.50 | a | 20.29 | 26.26 | 28.53 | 38.87 | 48.90 | 53.29 | 51.77 | 44.07 | 34.97 | 25.30 | 21.30 | a | 33.92 | |||||||||||
1976 | 16.97 | 26.07 | 26.03 | 34.80 | 41.61 | 50.48 | a | 55.29 | 53.58 | 48.83 | a | 33.10 | 22.63 | 16.48 | 35.49 | |||||||||||
1977 | 14.84 | 22.07 | 24.61 | 36.59 | a | 43.35 | 53.77 | 56.87 | 57.61 | 49.40 | 39.90 | 29.70 | 17.07 | a | 37.15 | |||||||||||
1978 | 22.80 | a | 23.71 | 30.87 | 37.67 | 42.35 | 53.63 | 59.19 | 53.32 | 47.20 | 40.06 | 31.47 | 18.70 | a | 38.42 | |||||||||||
1979 | 13.00 | 20.96 | 28.84 | 35.90 | 42.06 | 50.57 | 55.19 | 53.42 | 49.97 | 39.16 | 23.47 | 21.55 | 36.17 | |||||||||||||
1980 | 23.87 | 26.34 | 26.90 | 32.27 | 41.42 | 54.13 | 60.61 | 55.42 | 50.17 | a | 35.29 | 27.27 | 25.45 | 38.26 | ||||||||||||
1981 | 21.48 | 23.64 | 28.23 | 38.50 | 44.03 | 55.31 | a | 58.23 | 54.74 | 49.90 | 39.87 | a | 29.77 | 22.94 | 38.89 | |||||||||||
1982 | 19.18 | c | 23.16 | c | 30.33 | a | 35.00 | b | 41.48 | 51.40 | 56.72 | b | 56.84 | 50.20 | 35.10 | b | 28.07 | b | 20.42 | 37.33 | ||||||
1983 | 21.23 | a | 24.38 | b | 29.45 | 29.43 | 39.77 | a | 49.59 | a | 57.52 | d | 57.68 | 51.55 | a | 39.19 | 27.80 | 20.94 | 37.38 | |||||||
1984 | 16.83 | a | 20.75 | a | 26.71 | 30.80 | 46.71 | 50.67 | 57.13 | 55.61 | 49.60 | 34.87 | 28.00 | 23.29 | 36.75 | |||||||||||
1985 | 17.93 | a | 20.96 | 30.48 | 37.23 | 44.39 | 53.07 | a | 56.47 | a | 56.68 | 47.20 | 39.97 | 29.63 | 21.74 | 37.98 | ||||||||||
1986 | 24.74 | 26.61 | 31.72 | b | 38.07 | 43.84 | 53.27 | 56.26 | 56.16 | 46.90 | 37.06 | 27.86 | a | 22.10 | 38.72 | |||||||||||
1987 | 19.65 | 24.79 | 26.48 | 34.80 | 43.65 | 53.40 | 56.74 | 54.65 | 46.70 | 40.35 | 28.73 | 19.84 | 37.48 | |||||||||||||
1988 | 16.32 | 24.97 | 26.30 | h | 35.00 | 43.53 | a | 53.34 | a | 56.47 | n | 55.76 | j | 45.11 | b | 38.74 | d | 26.18 | b | 14.90 | b | 33.12 | c | |||
1989 | 15.61 | c | 22.56 | a | 28.24 | b | 35.24 | a | 42.57 | a | 50.77 | d | 56.28 | b | 52.25 | g | 52.03 | a | 40.81 | 26.32 | b | 17.67 | a | 35.28 | a | |
1990 | 17.79 | b | 24.61 | 32.23 | a | 37.69 | a | 40.30 | a | 54.38 | a | 54.29 | 52.52 | b | 48.08 | r | 34.14 | i | 27.17 | 13.16 | 35.41 | b | ||||
1991 | 17.07 | a | 22.62 | b | 26.53 | a | 29.10 | a | 40.45 | 50.57 | 54.03 | a | 53.58 | 46.31 | a | 34.39 | 25.13 | 20.29 | 35.01 | |||||||
1992 | 13.81 | 24.71 | a | 27.07 | b | 34.24 | a | 42.32 | 47.17 | 52.94 | 51.83 | b | 44.71 | b | 36.77 | a | 20.62 | a | 14.29 | 34.21 | ||||||
1993 | 22.61 | 24.75 | d | 26.55 | b | 31.76 | a | 40.97 | a | 48.83 | a | 54.13 | 53.60 | a | 43.21 | a | 33.07 | a | 21.03 | a | 15.87 | a | 34.70 | |||
1994 | 14.83 | a | 17.86 | 26.97 | 33.57 | 43.83 | a | 52.60 | 52.94 | 55.90 | b | 47.38 | a | 35.03 | 24.63 | c | 21.80 | a | 35.61 | |||||||
1995 | 20.70 | a | 26.19 | a | 27.13 | 29.90 | 39.30 | a | 48.36 | b | 53.43 | a | 56.32 | 47.59 | a | 32.61 | 27.77 | 19.47 | a | 35.73 | ||||||
1996 | 16.33 | a | 25.07 | a | 21.93 | a | 32.77 | 43.93 | a | 52.73 | 57.58 | 53.33 | a | 44.28 | a | 34.03 | a | 26.60 | 18.97 | a | 35.63 | |||||
1997 | 16.68 | 22.19 | a | 26.13 | 30.86 | a | 41.57 | a | 47.37 | c | 48.81 | d | 53.59 | d | 49.50 | b | 34.60 | a | 22.93 | b | 14.61 | c | 34.07 | |||
1998 | 20.77 | 21.75 | 25.77 | 28.76 | a | 37.52 | 45.97 | a | 55.10 | a | 54.39 | c | 51.20 | 37.39 | 27.93 | a | 19.33 | a | 35.49 | |||||||
1999 | 20.35 | 21.89 | 28.13 | a | 31.48 | a | 38.97 | 46.93 | 53.60 | a | 52.43 | c | 44.25 | b | 34.61 | 24.03 | a | ----- | z | 36.06 | a | |||||
2000 | 18.71 | 25.36 | a | 25.90 | b | 35.29 | f | 44.08 | g | 50.07 | 55.45 | 55.71 | 49.07 | 38.07 | a | 21.17 | 17.97 | 35.75 | b | |||||||
2001 | 15.83 | a | 21.32 | 27.74 | 33.97 | a | 41.86 | b | 44.42 | d | 52.48 | d | 51.83 | a | 45.67 | 35.81 | 27.14 | b | 16.03 | a | 34.51 | |||||
2002 | 17.47 | a | 16.48 | a | 21.39 | 37.36 | b | 38.81 | j | 52.31 | a | 55.67 | a | 53.45 | 48.14 | a | 35.10 | 24.33 | 18.54 | c | 34.57 | a | ||||
2003 | 21.97 | 21.64 | 25.71 | 31.00 | a | 40.76 | f | 48.07 | 58.42 | 55.83 | b | 46.63 | 38.97 | 25.20 | 17.07 | a | 35.50 | a | ||||||||
2004 | 20.16 | 17.55 | 30.29 | 32.60 | 41.30 | a | 49.93 | 53.90 | a | 51.32 | 46.55 | a | 36.17 | a | 24.83 | a | 18.29 | 35.24 | ||||||||
2005 | 25.65 | 25.93 | a | 24.79 | b | 33.03 | 41.21 | c | 49.13 | 54.90 | a | 53.45 | 48.67 | 36.77 | 24.10 | a | 17.94 | 36.30 | ||||||||
2006 | 17.40 | a | 17.71 | 27.68 | 34.90 | 44.00 | 52.27 | 57.10 | 54.84 | 42.00 | 35.39 | 23.40 | 17.03 | 35.31 | ||||||||||||
2007 | 14.77 | 19.57 | 26.63 | a | 33.07 | a | 41.23 | 49.73 | 54.19 | 55.23 | 49.57 | 36.41 | b | 24.87 | 18.26 | 35.29 | ||||||||||
2008 | 13.81 | 22.24 | 23.10 | 28.40 | 40.06 | 49.23 | 55.06 | 54.58 | 46.70 | 35.34 | b | 24.87 | 20.03 | 34.45 | ||||||||||||
2009 | 19.97 | 21.75 | 26.94 | 31.13 | 44.19 | ----- | z | 55.55 | 52.39 | 44.27 | 33.74 | 24.40 | 13.87 | 33.47 | a | |||||||||||
2010 | 15.19 | 20.39 | 24.66 | b | 32.40 | 39.65 | 51.33 | 56.26 | 52.90 | 47.47 | 37.45 | 21.50 | 21.39 | 35.05 | ||||||||||||
2011 | 14.39 | 13.39 | 28.83 | a | 33.76 | a | 36.45 | 50.70 | 58.68 | 56.48 | 46.13 | 35.00 | 25.37 | 14.13 | 34.44 | |||||||||||
2012 | 20.13 | 20.71 | a | 26.03 | 35.83 | 42.32 | 53.17 | 55.71 | 54.94 | 47.03 | a | 34.10 | 23.23 | 15.23 | 35.70 | |||||||||||
2013 | 11.94 | 18.39 | 25.16 | 31.17 | 40.06 | 52.27 | 55.29 | 54.26 | 49.03 | a | 33.03 | 24.47 | 17.55 | 34.38 | ||||||||||||
2014 | 16.35 | 22.54 | 25.52 | 29.90 | 38.07 | a | 49.93 | 55.68 | 51.79 | c | 50.03 | 37.90 | 22.24 | a | 20.23 | a | 35.02 | |||||||||
2015 | 19.06 | 20.78 | a | 28.07 | a | 32.83 | 39.03 | 52.20 | 54.03 | 53.65 | 48.73 | 39.81 | 24.77 | 18.90 | 35.99 | |||||||||||
2016 | 17.84 | 21.62 | 27.23 | 32.50 | 38.65 | 52.60 | 56.71 | 51.84 | 46.40 | 36.87 | 28.27 | 20.29 | 35.90 | |||||||||||||
2017 | 22.55 | 26.32 | 29.84 | 32.93 | 39.50 | a | 51.03 | 56.68 | 53.45 | 47.53 | 35.32 | 29.83 | a | 18.17 | a | 36.93 | ||||||||||
2018 | 16.23 | 21.96 | 25.74 | 35.23 | 43.65 | 53.53 | 56.13 | 54.03 | 47.10 | 37.39 | 21.60 | 17.97 | a | 35.88 | ||||||||||||
2019 | 18.13 | 20.18 | 27.81 | 33.27 | 37.26 | 48.00 | 54.97 | 54.32 | 48.73 | 31.03 | 20.90 | 19.58 | 34.51 | |||||||||||||
2020 | 18.68 | 19.97 | 29.50 | a | 31.93 | 42.32 | 49.27 | 55.81 | 54.26 | 44.07 | 33.03 | 28.10 | 15.55 | 35.21 | ||||||||||||
2021 | 17.39 | 18.82 | 25.65 | 32.50 | 41.83 | a | 52.47 | 55.13 | 53.07 | a | 47.90 | 34.58 | 26.17 | a | 21.39 | 35.57 | ||||||||||
2022 | 17.07 | a | 15.29 | 25.35 | 32.79 | a | 41.68 | 52.03 | 56.40 | a | 54.03 | 47.57 | b | 35.94 | 19.65 | d | 18.00 | 34.65 | ||||||||
2023 | 19.13 | a | 18.96 | 25.84 | 29.90 | 42.35 | 45.76 | a | 59.06 | 55.87 | a | 47.73 | 35.68 | c | 24.00 | g | 20.65 | 36.45 | a | |||||||
2024 | 17.77 | 23.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.85 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.08 | 21.83 | 27.10 | 33.07 | 41.52 | 50.78 | 55.67 | 54.12 | 47.38 | 36.39 | 25.41 | 18.55 | 35.83 | |||||||||||||
S.D. | 3.08 | 3.04 | 2.29 | 2.72 | 2.20 | 2.47 | 2.00 | 1.65 | 2.28 | 2.47 | 2.80 | 2.72 | 1.34 | |||||||||||||
SKEW | 0.39 | -0.50 | 0.04 | 0.11 | -0.16 | -0.47 | -0.40 | 0.22 | -0.18 | 0.20 | -0.04 | 0.03 | 0.76 | |||||||||||||
MAX | 25.65 | 26.61 | 32.23 | 38.50 | 46.71 | 55.31 | 60.61 | 57.68 | 52.03 | 41.20 | 31.47 | 25.45 | 38.89 | |||||||||||||
MIN | 11.94 | 13.39 | 21.39 | 28.07 | 36.45 | 44.42 | 48.81 | 50.97 | 42.00 | 31.03 | 19.65 | 13.16 | 33.92 | |||||||||||||
YRS | 52 | 52 | 50 | 51 | 49 | 51 | 51 | 50 | 51 | 51 | 51 | 51 | 42 |