YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1970 | ----- | z | 31.00 | r | 32.68 | 34.80 | 40.52 | 48.97 | 50.42 | 50.19 | 45.27 | 38.90 | 36.50 | 29.52 | 40.78 | b | ||||||||||
1971 | 28.55 | 31.57 | 31.45 | 35.03 | 41.35 | 44.93 | 50.06 | 51.71 | 44.14 | i | 39.26 | 35.37 | 28.94 | 38.02 | a | |||||||||||
1972 | 25.39 | 29.66 | 32.67 | g | 33.30 | 41.87 | 46.93 | 49.13 | 51.00 | 41.70 | g | 35.90 | 34.07 | 25.47 | a | 37.27 | b | |||||||||
1973 | 28.26 | 32.50 | 33.57 | h | 34.77 | 41.00 | 46.90 | 49.00 | 48.52 | 46.50 | d | 40.74 | 32.03 | 34.86 | c | 39.55 | a | |||||||||
1974 | 27.52 | 32.71 | 32.62 | g | 38.30 | 40.19 | 46.90 | 50.03 | 51.39 | 48.23 | h | 40.58 | 36.90 | 33.71 | 39.82 | b | ||||||||||
1975 | 30.27 | a | 30.79 | 31.62 | g | 33.47 | 40.70 | a | 46.70 | 53.26 | 50.45 | 46.79 | f | 41.87 | 33.23 | 32.29 | 39.30 | b | ||||||||
1976 | 31.55 | 30.66 | 32.00 | g | 35.30 | 40.84 | 43.90 | 49.06 | 52.29 | 48.22 | g | 40.26 | 35.77 | 33.13 | 39.28 | b | ||||||||||
1977 | 26.68 | 35.25 | 33.08 | g | 37.57 | 41.77 | 48.87 | 49.23 | 53.19 | 46.52 | g | 39.03 | 32.33 | 31.94 | 39.59 | b | ||||||||||
1978 | 33.10 | 34.39 | 36.58 | 38.35 | g | 42.00 | 48.87 | 52.42 | 51.48 | 48.20 | e | 40.41 | b | 29.90 | 26.71 | 40.37 | a | |||||||||
1979 | 25.87 | 29.43 | 33.12 | e | 36.77 | 43.35 | 45.77 | 50.45 | b | 52.28 | b | 50.22 | g | 43.10 | 33.10 | 34.52 | 38.89 | a | ||||||||
1980 | 24.58 | 33.21 | 34.58 | g | 39.17 | 44.35 | 47.33 | 50.90 | 50.97 | a | 47.91 | g | 41.45 | 37.47 | 34.71 | 40.41 | b | |||||||||
1981 | 36.65 | 32.54 | 34.79 | g | 37.37 | 44.03 | 46.77 | 53.23 | 53.87 | 49.64 | h | 38.93 | a | 36.50 | 31.94 | 41.18 | b | |||||||||
1982 | 28.90 | 29.59 | a | 32.43 | h | 32.80 | 40.71 | 48.47 | 50.42 | 52.23 | a | 47.57 | g | 40.90 | 32.23 | 30.80 | a | 38.71 | b | |||||||
1983 | 33.13 | 34.50 | 36.04 | g | 36.33 | 43.97 | 48.07 | 50.68 | 52.71 | 44.74 | g | 39.29 | 37.03 | 25.53 | a | 40.12 | b | |||||||||
1984 | 31.26 | 33.34 | 35.94 | 36.30 | g | 41.03 | 46.83 | 49.32 | 50.03 | 45.13 | g | 38.26 | 34.03 | a | 28.77 | 38.88 | b | |||||||||
1985 | 28.94 | 27.82 | 29.67 | g | 37.70 | 43.20 | a | 46.50 | 51.53 | a | 50.48 | 45.96 | g | 40.45 | 26.63 | 27.35 | 38.06 | b | ||||||||
1986 | 35.32 | 31.43 | 36.62 | g | 37.13 | 43.48 | 49.10 | 51.16 | 53.42 | 47.60 | j | 42.19 | 36.50 | 32.55 | b | 41.23 | b | |||||||||
1987 | 30.94 | 35.11 | 36.17 | g | 40.80 | 43.73 | a | 48.69 | a | 52.03 | 50.90 | 48.17 | g | 39.45 | 39.13 | 29.79 | b | 41.06 | b | |||||||
1988 | 31.03 | a | 33.24 | 33.29 | g | 38.77 | 43.35 | 47.57 | 49.97 | 51.06 | 47.39 | g | 45.81 | 36.43 | 32.58 | 40.98 | b | |||||||||
1989 | 31.40 | a | 24.61 | 32.87 | h | 38.43 | 42.16 | 49.07 | a | 51.16 | 51.90 | 47.45 | h | 41.16 | 37.47 | 33.97 | 40.13 | b | ||||||||
1990 | 32.54 | c | 28.54 | 34.38 | e | 40.87 | 43.48 | 48.73 | 53.68 | 54.42 | 50.74 | g | 39.97 | 38.25 | b | 25.87 | a | 40.07 | a | |||||||
1991 | 29.23 | 36.18 | 32.50 | g | 37.77 | 43.22 | d | 47.60 | 52.13 | 53.93 | a | 49.48 | g | 38.77 | 37.72 | a | 35.32 | 41.19 | b | |||||||
1992 | 34.48 | 36.59 | 37.71 | g | 41.13 | 45.32 | 50.77 | 54.32 | 52.26 | 46.96 | g | 43.42 | 37.54 | d | 29.77 | 42.56 | b | |||||||||
1993 | 26.03 | 30.25 | 35.29 | g | 40.00 | 47.26 | 48.90 | 51.81 | 53.23 | 47.26 | g | 44.84 | 31.67 | 31.13 | 40.51 | b | ||||||||||
1994 | 36.52 | 30.36 | c | 35.03 | 41.64 | h | 44.74 | 47.03 | 51.81 | 52.42 | 49.30 | g | 41.19 | 31.90 | 31.00 | 40.20 | b | |||||||||
1995 | 34.10 | 33.79 | 32.92 | g | 38.00 | 44.58 | 48.17 | 53.61 | 49.58 | 50.50 | h | 41.65 | 38.38 | a | 33.20 | a | 41.50 | b | ||||||||
1996 | 31.00 | 30.93 | 34.67 | g | 40.07 | 41.48 | 46.70 | 52.42 | 51.87 | 45.65 | g | 41.55 | 34.77 | 29.94 | 40.07 | b | ||||||||||
1997 | 30.42 | 31.64 | 34.71 | g | 36.93 | 44.87 | 48.40 | 52.30 | a | 53.74 | 51.09 | g | 42.23 | a | 37.23 | 34.03 | b | 41.18 | b | |||||||
1998 | 31.68 | 34.41 | a | 36.38 | g | 38.77 | 47.19 | 50.90 | a | 54.93 | a | 52.97 | 48.87 | g | 41.77 | 36.40 | 30.67 | d | 41.97 | b | ||||||
1999 | 33.38 | e | 33.10 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.31 | b | 33.85 | j |
2000 | 30.66 | b | 32.69 | 34.21 | c | 38.24 | a | 43.10 | a | 47.48 | a | 50.35 | 49.34 | b | 40.93 | a | ----- | z | 32.57 | b | 31.55 | b | 39.19 | a | ||
2001 | 33.10 | 30.11 | 35.23 | 36.62 | a | ----- | z | 46.03 | ----- | z | 53.29 | ----- | z | ----- | z | 37.79 | f | 31.76 | j | 39.06 | f | |||||
2002 | 33.10 | a | 32.68 | 32.38 | b | 38.00 | a | 42.26 | 49.07 | 53.00 | 51.40 | a | 46.24 | a | 39.84 | 38.13 | 35.03 | a | 40.93 | |||||||
2003 | 36.45 | 33.07 | 36.00 | 39.40 | 44.16 | 50.20 | 49.77 | 50.42 | 48.93 | 44.07 | a | 33.13 | 33.63 | a | 41.60 | |||||||||||
2004 | 30.13 | 34.03 | 37.55 | 39.77 | 46.13 | 50.07 | 54.61 | 55.87 | 49.47 | 43.39 | 36.41 | a | 34.79 | b | 42.68 | |||||||||||
2005 | 32.23 | a | 30.71 | 36.81 | 40.73 | 47.81 | 49.73 | 52.32 | 52.48 | 46.07 | 45.39 | 36.07 | 33.84 | 42.02 | ||||||||||||
2006 | 35.47 | a | 31.14 | 32.90 | 38.20 | 43.77 | 50.83 | 53.71 | 50.77 | 47.77 | 40.87 | 35.43 | b | 32.48 | b | 41.11 | ||||||||||
2007 | 28.53 | a | 34.00 | 36.40 | a | 39.80 | 42.90 | 49.23 | 54.03 | 52.03 | 47.63 | 41.53 | a | 35.10 | 31.60 | a | 41.07 | |||||||||
2008 | 29.06 | 32.11 | b | 33.68 | 35.20 | 44.03 | 46.97 | a | 51.48 | 54.23 | 47.97 | 41.87 | 39.63 | 27.81 | 40.34 | |||||||||||
2009 | 30.40 | a | 30.46 | 30.90 | 36.38 | a | 41.81 | 50.40 | 53.97 | a | 53.27 | a | 49.73 | 41.16 | 37.53 | 28.19 | 40.35 | |||||||||
2010 | 36.52 | 34.07 | 35.61 | 38.67 | 42.26 | 48.60 | 51.45 | 52.52 | 52.13 | 43.45 | 34.10 | 32.87 | 41.85 | |||||||||||||
2011 | 32.19 | 30.07 | 34.35 | 35.23 | 42.10 | 48.60 | 51.00 | 52.68 | 50.40 | 43.90 | 33.50 | 31.10 | 40.43 | |||||||||||||
2012 | 31.97 | 33.97 | 33.19 | 39.47 | 43.03 | 47.50 | 54.55 | 54.13 | 47.17 | 41.29 | 38.33 | 32.77 | 41.45 | |||||||||||||
2013 | 29.65 | 33.54 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.03 | 27.94 | 31.79 | h | ||||
2014 | 32.81 | 30.54 | 35.16 | 38.63 | 46.48 | 48.37 | 54.52 | 56.13 | 50.67 | 48.16 | 37.63 | 35.48 | 42.88 | |||||||||||||
2015 | 34.52 | b | 38.36 | 38.29 | 38.17 | 47.90 | 51.70 | 54.68 | 53.39 | 48.20 | 48.68 | 35.90 | 33.29 | 43.59 | ||||||||||||
2016 | 33.45 | 38.17 | 37.42 | 43.13 | 47.06 | 50.73 | 54.65 | 53.81 | 47.77 | 43.68 | 40.57 | 28.68 | 43.26 | |||||||||||||
2017 | 25.03 | 30.61 | 35.32 | 39.20 | 44.74 | 49.90 | 51.03 | 52.65 | 49.20 | 39.55 | 36.27 | 31.55 | 40.42 | |||||||||||||
2018 | 35.74 | 30.71 | 31.87 | 38.93 | 48.00 | 48.43 | 52.90 | 54.42 | 47.97 | 40.71 | 37.93 | 33.26 | 41.74 | |||||||||||||
2019 | 34.13 | 25.46 | 30.58 | 38.67 | 45.84 | 48.60 | 52.84 | 54.55 | 51.43 | 37.71 | 33.47 | 34.06 | 40.61 | |||||||||||||
2020 | 32.03 | 32.21 | 32.74 | 39.17 | 45.84 | 49.73 | 53.06 | 51.58 | 51.70 | 43.29 | 36.73 | 34.61 | 41.89 | |||||||||||||
2021 | 33.32 | 31.11 | 32.87 | 36.93 | 43.58 | 52.33 | 53.97 | 55.32 | 49.33 | 42.48 | 38.23 | 30.26 | 41.65 | |||||||||||||
2022 | 29.32 | 30.82 | 35.58 | 35.00 | 42.29 | 49.07 | 54.19 | 55.74 | 49.33 | f | 43.84 | 31.86 | i | ----- | z | 41.76 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.32 | 32.07 | 34.42 | 37.81 | 43.62 | 48.39 | 52.05 | 52.44 | 48.29 | 41.60 | 35.58 | 31.55 | 41.57 | |||||||||||||
S.D. | 3.13 | 2.68 | 2.06 | 2.20 | 2.12 | 1.69 | 1.78 | 1.72 | 2.43 | 2.48 | 2.68 | 2.74 | 0.99 | |||||||||||||
SKEW | -0.26 | -0.15 | -0.06 | -0.27 | 0.46 | -0.09 | -0.06 | 0.06 | -0.96 | 0.63 | -0.88 | -0.60 | 0.50 | |||||||||||||
MAX | 36.65 | 38.36 | 38.29 | 43.13 | 48.00 | 52.33 | 54.93 | 56.13 | 52.13 | 48.68 | 40.57 | 35.48 | 43.59 | |||||||||||||
MIN | 24.58 | 24.61 | 30.58 | 32.80 | 40.19 | 43.90 | 49.00 | 48.52 | 40.93 | 35.90 | 26.63 | 25.47 | 40.34 | |||||||||||||
YRS | 52 | 51 | 29 | 48 | 50 | 51 | 50 | 51 | 23 | 49 | 50 | 51 | 19 |