YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | 33.10 | 32.90 | 37.61 | 39.52 | a | 51.16 | 66.40 | 67.77 | 63.90 | 58.30 | 51.77 | 35.70 | 29.00 | 47.26 | ||||||||||||
1969 | 32.84 | 32.46 | 31.55 | 46.70 | 56.13 | 57.03 | 69.61 | 68.57 | a | 61.10 | 41.81 | 38.27 | 31.52 | 47.30 | ||||||||||||
1970 | 27.68 | 34.46 | 30.71 | 37.50 | 55.26 | 61.30 | 68.16 | 68.77 | 58.66 | a | 43.65 | 36.87 | 32.39 | 46.28 | ||||||||||||
1971 | 29.84 | 28.79 | 34.55 | 43.17 | 51.42 | 64.90 | 67.71 | 66.39 | 58.20 | 49.10 | 38.17 | 30.65 | 46.91 | |||||||||||||
1972 | 29.35 | 32.00 | 40.42 | 44.67 | 52.35 | 63.93 | 68.48 | 64.39 | 59.70 | 49.84 | 32.93 | 30.35 | 47.37 | |||||||||||||
1973 | 31.35 | 34.32 | 32.55 | 37.97 | 50.30 | a | 62.67 | 65.97 | 67.23 | 59.43 | 54.42 | 39.17 | 32.23 | 47.30 | ||||||||||||
1974 | 29.45 | 32.86 | 39.81 | 42.00 | 58.29 | 64.77 | 67.71 | j | 66.06 | 58.57 | 52.29 | 38.67 | 29.83 | a | 46.60 | a | ||||||||||
1975 | 29.83 | a | 29.96 | 35.74 | 41.14 | a | 50.61 | 61.67 | 67.48 | 68.48 | 60.34 | a | 53.55 | 38.93 | a | 35.52 | 47.77 | |||||||||
1976 | 31.55 | 37.41 | 35.16 | 45.00 | a | 52.77 | 63.72 | a | 69.84 | 65.71 | 58.47 | 48.68 | 36.87 | 33.63 | a | 48.23 | ||||||||||
1977 | 28.87 | 34.21 | 34.45 | 46.24 | a | 56.50 | a | 69.00 | 69.23 | 67.61 | 63.77 | 52.81 | 38.47 | 31.61 | 49.40 | |||||||||||
1978 | 29.97 | 31.43 | 40.23 | 47.17 | 50.94 | 64.77 | 73.16 | 67.39 | 63.20 | 53.71 | 40.00 | 27.47 | a | 49.12 | ||||||||||||
1979 | 23.70 | a | 32.78 | a | 36.19 | 44.53 | 51.06 | 64.21 | a | 70.60 | a | 66.26 | 64.31 | a | 53.67 | a | 32.38 | a | 37.03 | 48.06 | ||||||
1980 | 30.19 | 35.79 | 34.45 | 41.37 | 50.48 | 68.53 | 73.13 | 69.63 | a | 63.17 | 51.32 | 42.10 | a | 42.52 | b | 50.22 | ||||||||||
1981 | 36.77 | 35.46 | 37.19 | 46.07 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.27 | t | 42.86 | a | 31.70 | a | 36.80 | g | |||
1982 | 28.84 | 32.14 | 36.50 | a | 42.24 | a | 50.77 | 60.52 | c | 67.03 | 67.24 | b | 58.66 | a | 48.24 | b | 37.17 | 33.64 | c | 46.92 | ||||||
1983 | 35.90 | a | 35.04 | 35.27 | a | 37.17 | a | 48.08 | e | 62.11 | c | 70.87 | a | 67.94 | 65.07 | 51.14 | b | 37.47 | 27.20 | a | 47.77 | |||||
1984 | 32.54 | c | 33.63 | b | 34.07 | b | 38.67 | 55.83 | b | 62.33 | 69.10 | 67.03 | 60.25 | b | 42.20 | a | 39.00 | 34.03 | 47.39 | |||||||
1985 | 29.57 | a | 29.86 | 37.68 | 46.30 | 54.19 | 64.77 | 66.65 | 69.77 | 57.71 | b | 49.72 | b | 34.03 | a | 31.68 | 47.66 | |||||||||
1986 | 39.17 | a | 31.96 | a | 41.62 | b | 45.17 | 52.53 | a | 64.86 | b | 68.33 | a | 66.65 | 57.83 | a | 47.06 | 39.10 | a | 33.74 | 49.00 | |||||
1987 | 31.32 | 33.71 | 37.57 | a | 48.55 | a | 53.40 | a | 66.14 | a | 70.37 | a | 65.77 | a | 59.97 | 51.97 | 39.34 | a | ----- | z | 50.74 | a | ||||
1988 | 27.10 | 34.28 | 34.13 | 46.90 | 53.48 | b | 66.67 | 68.35 | 68.93 | a | 59.90 | 53.60 | a | 35.03 | 33.52 | 48.49 | ||||||||||
1989 | 34.30 | a | 32.32 | 43.79 | b | 46.10 | a | 54.39 | 59.37 | 69.87 | 65.39 | 60.50 | 49.90 | 38.60 | 30.68 | 48.77 | ||||||||||
1990 | 31.33 | a | 31.56 | a | 36.94 | 44.47 | 50.77 | 68.13 | 65.65 | 65.65 | 62.73 | 50.23 | 42.17 | 29.74 | 48.28 | |||||||||||
1991 | 29.80 | a | 37.39 | 35.00 | 40.60 | 54.03 | a | 62.86 | a | 66.16 | 65.39 | 59.43 | 51.33 | a | 35.30 | 35.06 | 47.70 | |||||||||
1992 | 33.43 | a | 34.38 | 39.93 | a | 48.23 | 54.38 | e | 59.80 | 65.52 | 64.68 | 61.07 | 53.06 | 31.53 | 30.68 | 48.06 | ||||||||||
1993 | 32.77 | 30.11 | 39.35 | 42.27 | 52.77 | 61.21 | b | 68.62 | b | 66.10 | 60.59 | a | 48.80 | a | 38.00 | b | 36.36 | c | 48.08 | |||||||
1994 | 33.61 | 32.48 | a | 40.81 | 44.47 | 56.37 | a | 68.57 | 69.45 | 68.32 | 61.93 | 47.42 | 38.68 | b | 38.79 | c | 50.07 | |||||||||
1995 | 34.71 | 38.00 | 39.58 | 39.45 | a | 45.42 | 59.93 | 66.19 | 70.00 | 61.79 | b | 48.68 | 42.27 | 34.94 | 48.41 | |||||||||||
1996 | 29.29 | 35.66 | 37.87 | 43.53 | 56.97 | 64.63 | 70.13 | 68.32 | 58.17 | 52.68 | 41.57 | 31.68 | 49.21 | |||||||||||||
1997 | 33.90 | 32.71 | 43.65 | 39.70 | 50.90 | 63.63 | 68.26 | 65.42 | 62.53 | 49.94 | 36.25 | b | 32.30 | a | 48.27 | |||||||||||
1998 | 32.97 | a | 30.93 | 35.84 | f | 40.70 | ----- | z | 60.80 | 68.42 | 67.03 | 65.07 | 49.35 | 39.90 | 34.45 | 48.96 | b | |||||||||
1999 | 32.77 | a | 36.37 | a | 41.97 | 39.03 | 49.71 | 62.59 | a | 68.65 | 65.13 | 58.93 | 53.10 | 48.50 | 33.03 | 49.15 | ||||||||||
2000 | 32.10 | 37.52 | 39.17 | a | 48.06 | n | 58.07 | a | 66.24 | a | 71.80 | a | 69.48 | 63.50 | 52.06 | 32.28 | a | 31.93 | b | 50.38 | a | |||||
2001 | 32.43 | c | 34.36 | 37.13 | a | 47.74 | c | 55.97 | b | 67.60 | 71.03 | a | 67.23 | 63.43 | 51.77 | a | 44.37 | 32.29 | 50.45 | |||||||
2002 | 31.35 | 33.80 | c | 36.13 | 50.23 | 56.59 | b | 70.83 | 73.77 | 69.42 | 60.97 | 47.55 | 38.07 | 32.71 | 50.12 | |||||||||||
2003 | 37.89 | m | 29.57 | 36.81 | 46.03 | 55.35 | 62.28 | a | 74.89 | c | 68.65 | 60.56 | e | 56.72 | b | 36.90 | a | 35.79 | c | 51.23 | a | |||||
2004 | 33.90 | a | 30.77 | c | 43.34 | b | 43.03 | 55.74 | 61.70 | 66.65 | 65.33 | a | 59.60 | 48.16 | 37.50 | 33.57 | a | 48.27 | ||||||||
2005 | 36.13 | 33.04 | 34.84 | 45.07 | 54.29 | 62.10 | 72.19 | 65.32 | 63.63 | 52.45 | 41.07 | 29.58 | 49.14 | |||||||||||||
2006 | 33.26 | 30.71 | 36.23 | 48.57 | 56.55 | 68.07 | 68.94 | 66.10 | 56.80 | 46.29 | 40.00 | 32.16 | 48.64 | |||||||||||||
2007 | 31.83 | a | 31.36 | c | 41.74 | 42.33 | 54.61 | 64.77 | 71.06 | 69.35 | 62.10 | a | 52.19 | 44.50 | 27.94 | 49.48 | ||||||||||
2008 | 26.06 | 29.43 | a | 34.81 | 39.93 | 50.26 | 63.66 | a | 71.19 | 67.19 | 61.30 | 50.77 | 41.57 | 29.26 | 47.12 | |||||||||||
2009 | 33.13 | 33.71 | 39.03 | 40.07 | 55.00 | a | 60.83 | 69.55 | 67.68 | 58.93 | 43.06 | 43.93 | 26.73 | a | 47.64 | |||||||||||
2010 | 33.06 | 27.68 | 36.74 | 43.33 | 49.65 | 65.43 | 69.68 | 68.55 | 66.33 | 50.84 | 37.40 | 36.13 | 48.74 | |||||||||||||
2011 | 29.71 | 27.04 | 38.77 | 41.57 | 47.16 | 66.63 | 71.32 | 70.81 | 59.87 | 49.58 | 37.77 | 33.03 | 47.77 | |||||||||||||
2012 | 33.90 | 28.93 | 43.83 | a | 50.23 | 56.26 | 70.53 | 70.94 | 69.74 | 62.73 | 49.90 | 44.30 | 31.42 | 51.06 | ||||||||||||
2013 | 31.97 | 28.36 | 34.87 | 38.33 | 52.16 | 67.87 | 69.29 | 68.13 | 61.60 | 47.94 | 39.53 | 28.65 | 47.39 | |||||||||||||
2014 | 31.10 | 30.04 | 37.74 | 41.77 | 50.81 | 65.00 | 69.65 | 64.45 | 63.63 | 52.77 | 37.93 | 33.16 | 48.17 | |||||||||||||
2015 | 35.81 | 34.32 | 42.74 | 44.70 | 48.94 | 67.67 | 67.58 | 68.81 | 65.53 | 53.45 | 37.63 | 29.90 | 49.76 | |||||||||||||
2016 | 31.81 | 35.62 | 36.65 | 42.20 | 50.39 | 69.80 | 71.81 | 65.68 | 62.27 | 54.74 | 44.70 | 29.94 | 49.63 | |||||||||||||
2017 | 28.68 | 37.14 | 42.68 | 43.47 | 51.42 | 67.33 | 68.55 | 65.68 | 60.87 | 50.19 | 45.10 | 35.32 | 49.70 | |||||||||||||
2018 | 35.26 | 30.79 | 38.32 | 44.33 | 56.94 | 69.17 | 71.77 | i | 70.11 | m | 65.76 | a | 46.50 | a | 33.63 | 32.42 | 45.31 | b | ||||||||
2019 | 31.10 | a | 29.50 | 36.10 | 44.80 | 47.53 | a | 61.27 | 70.19 | 69.16 | 65.50 | 44.42 | 40.73 | 32.84 | 47.76 | |||||||||||
2020 | 31.39 | 28.03 | 38.45 | 42.90 | 57.45 | 64.30 | 69.29 | 70.97 | 61.10 | 53.94 | 41.57 | 33.58 | 49.41 | |||||||||||||
2021 | 31.16 | 28.32 | 34.68 | 42.23 | 52.29 | 66.87 | 69.61 | 67.45 | 66.30 | 49.87 | 44.00 | 35.71 | 49.04 | |||||||||||||
2022 | 32.84 | 29.86 | 37.52 | 41.57 | 52.90 | 65.07 | 70.65 | 68.00 | 64.31 | a | 50.39 | 36.47 | 31.23 | 48.40 | ||||||||||||
2023 | 29.48 | 31.61 | 32.61 | 41.17 | 54.13 | 60.13 | 71.65 | 68.00 | 62.27 | 50.81 | 39.90 | 32.19 | 47.83 | |||||||||||||
2024 | 26.87 | 32.41 | 34.74 | 42.37 | 49.67 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.10 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.65 | 32.48 | 37.54 | 43.25 | 53.00 | 64.49 | 69.43 | 67.34 | 61.42 | 50.21 | 39.04 | 32.44 | 48.45 | |||||||||||||
S.D. | 2.80 | 2.76 | 3.20 | 3.22 | 3.01 | 3.16 | 2.10 | 1.76 | 2.47 | 3.21 | 3.55 | 2.91 | 1.05 | |||||||||||||
SKEW | -0.11 | 0.10 | 0.25 | 0.19 | -0.26 | 0.01 | 0.25 | 0.05 | 0.26 | -0.75 | 0.15 | 0.66 | 0.35 | |||||||||||||
MAX | 39.17 | 38.00 | 43.83 | 50.23 | 58.29 | 70.83 | 74.89 | 70.97 | 66.33 | 56.72 | 48.50 | 42.52 | 51.06 | |||||||||||||
MIN | 23.70 | 27.04 | 30.71 | 37.17 | 45.42 | 57.03 | 65.52 | 63.90 | 56.80 | 41.81 | 31.53 | 26.73 | 46.28 | |||||||||||||
YRS | 56 | 57 | 56 | 55 | 54 | 55 | 53 | 54 | 55 | 55 | 56 | 55 | 49 |