YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1977 | 30.15 | a | 37.37 | b | 38.69 | b | 51.81 | d | 59.93 | d | 71.35 | 74.16 | c | 73.00 | a | 65.82 | 54.50 | 43.10 | 40.18 | 53.34 | ||||||
1978 | 35.61 | 37.28 | a | 45.34 | b | 52.58 | 58.52 | 71.04 | b | 75.52 | b | 70.22 | a | 63.40 | a | 55.18 | 43.33 | a | 31.22 | b | 53.27 | |||||
1979 | 28.63 | a | 35.20 | a | 41.38 | a | 49.65 | 56.83 | a | 66.71 | a | 73.18 | 68.93 | a | 64.33 | a | 55.05 | 35.85 | 34.40 | b | 50.85 | |||||
1980 | 37.52 | f | 37.98 | d | 39.66 | b | 48.15 | 56.35 | 71.33 | 75.27 | 71.78 | a | 64.55 | a | 49.24 | 40.59 | c | 37.97 | b | 53.90 | a | |||||
1981 | 34.94 | e | 38.93 | 41.68 | a | 54.19 | a | 59.74 | 72.37 | c | 73.13 | a | 69.67 | a | 64.47 | 51.60 | b | 43.43 | 37.00 | 53.43 | ||||||
1982 | 32.96 | c | 36.18 | c | 42.93 | c | 51.60 | a | 57.90 | a | 68.53 | 74.90 | b | 70.70 | a | 64.47 | a | 49.17 | b | 39.89 | c | 32.58 | a | 51.82 | ||
1983 | 30.62 | a | 36.62 | b | 42.32 | 46.52 | c | 55.73 | 67.72 | c | 74.07 | a | 71.29 | b | 65.76 | a | 53.26 | 40.17 | c | 34.45 | c | 51.54 | ||||
1984 | 30.26 | 36.42 | c | 42.48 | a | 47.87 | 64.39 | 68.46 | e | 74.31 | 71.00 | 64.56 | c | 46.73 | e | 39.70 | b | 32.87 | 51.59 | |||||||
1985 | 31.56 | 34.30 | 43.32 | a | 52.76 | c | 59.33 | a | 68.43 | 72.69 | 70.18 | 58.66 | b | 51.94 | 40.23 | b | 33.84 | 51.44 | ||||||||
1986 | 37.00 | 40.32 | 45.41 | b | 52.53 | a | 58.92 | a | 68.47 | 71.06 | 71.97 | 61.23 | 49.76 | 39.50 | 33.24 | 52.45 | ||||||||||
1987 | 27.55 | b | 34.20 | a | 40.55 | b | 49.33 | 56.18 | 65.58 | 70.69 | 68.35 | a | 61.42 | 54.00 | 37.77 | 27.77 | 49.45 | |||||||||
1988 | 29.27 | 38.31 | 40.84 | 49.95 | 58.47 | 67.63 | 71.42 | a | 68.65 | 60.40 | 54.74 | 42.22 | 29.56 | 50.95 | ||||||||||||
1989 | 29.76 | 36.84 | 47.57 | a | 55.37 | 61.87 | 68.07 | 72.68 | 68.73 | 61.97 | a | 51.60 | 41.00 | 33.10 | a | 52.38 | ||||||||||
1990 | 27.37 | 34.88 | 43.79 | 51.95 | 57.94 | 71.78 | 69.87 | 67.16 | 64.52 | a | 53.02 | 40.47 | 28.87 | 50.97 | ||||||||||||
1991 | 31.35 | 37.79 | 40.02 | 49.53 | 57.92 | a | 65.72 | 70.92 | 69.61 | 61.63 | 53.66 | 39.45 | 32.39 | 50.83 | ||||||||||||
1992 | 27.97 | 36.57 | 42.73 | 54.25 | 58.29 | 65.40 | 69.48 | 68.70 | a | 63.60 | 54.53 | 35.98 | 26.65 | a | 50.35 | |||||||||||
1993 | 36.35 | 37.07 | 43.73 | 51.03 | 59.19 | 67.02 | 74.21 | 68.55 | 62.13 | 50.76 | 38.15 | 31.63 | 51.65 | |||||||||||||
1994 | 33.18 | a | 34.68 | 44.72 | a | 49.98 | 58.92 | 72.47 | 74.02 | 72.60 | 63.22 | 50.03 | 39.05 | 34.61 | 52.29 | |||||||||||
1995 | 33.63 | 42.46 | 43.79 | 48.18 | 56.55 | 65.45 | 70.97 | 73.37 | 64.17 | 53.23 | 45.65 | 35.68 | 52.76 | |||||||||||||
1996 | 35.18 | 42.02 | 42.55 | 52.03 | 66.11 | 70.60 | a | 73.82 | 71.58 | 60.88 | 51.58 | 42.02 | 35.87 | 53.69 | ||||||||||||
1997 | 31.73 | 35.80 | 45.65 | 47.28 | 59.84 | 66.73 | 71.85 | 70.27 | 65.50 | 51.73 | 40.57 | 27.69 | 51.22 | |||||||||||||
1998 | 34.97 | 34.66 | 41.50 | 45.35 | 58.23 | 66.32 | 72.69 | 71.18 | 67.55 | 52.10 | 42.78 | 34.61 | 51.83 | |||||||||||||
1999 | 38.08 | 39.00 | 46.03 | 48.42 | 57.98 | 67.87 | 70.97 | 69.45 | 62.85 | 53.76 | 44.08 | 31.00 | 52.46 | |||||||||||||
2000 | 37.65 | 40.81 | 42.13 | 52.52 | 63.69 | 70.62 | 73.68 | 71.65 | 66.55 | 51.50 | 35.52 | 33.41 | b | 53.31 | ||||||||||||
2001 | 28.90 | 38.07 | 43.45 | 51.60 | 63.18 | 70.82 | 73.63 | 70.47 | a | 65.93 | 55.89 | 43.63 | 30.95 | 53.04 | ||||||||||||
2002 | 33.48 | a | 36.48 | 41.98 | 55.70 | 61.11 | 73.03 | 73.77 | 72.42 | 63.90 | 51.75 | a | 41.68 | 31.32 | 53.05 | |||||||||||
2003 | 39.45 | 37.09 | a | 43.79 | 50.48 | 60.42 | 69.18 | 77.45 | 72.24 | 64.82 | 57.08 | 41.92 | 33.74 | 53.97 | ||||||||||||
2004 | 33.84 | 33.29 | 47.80 | a | 50.34 | a | 61.16 | 68.90 | 71.81 | 68.27 | 61.45 | a | 50.09 | b | 39.63 | 32.68 | 51.61 | |||||||||
2005 | 37.71 | 38.34 | 41.29 | 49.18 | 59.98 | 66.75 | 74.61 | 70.02 | a | 65.13 | 52.73 | 43.08 | 35.30 | a | 52.84 | |||||||||||
2006 | 35.31 | 36.96 | 41.77 | 53.43 | 64.27 | 71.48 | 73.76 | 69.25 | a | 59.03 | 51.35 | 42.05 | 30.63 | a | 52.44 | |||||||||||
2007 | 30.60 | 38.38 | 45.11 | 50.63 | 58.45 | 69.59 | a | 75.05 | 73.42 | 65.67 | 53.35 | a | 44.92 | 33.44 | 53.22 | |||||||||||
2008 | 29.50 | 37.50 | b | 42.76 | 49.02 | 57.58 | 70.17 | 72.65 | 72.18 | 63.78 | 52.30 | a | 42.07 | 35.47 | 52.08 | |||||||||||
2009 | 36.53 | 38.50 | 45.42 | 49.92 | 63.42 | 66.18 | 75.39 | 71.13 | 63.00 | 51.15 | 44.14 | h | 29.55 | 53.65 | a | |||||||||||
2010 | 31.16 | 34.86 | 39.80 | c | 50.98 | e | 58.18 | n | 71.10 | 74.82 | 71.26 | 67.18 | 54.56 | 38.80 | 39.35 | 52.17 | a | |||||||||
2011 | 33.16 | 33.84 | 46.95 | 53.23 | 56.95 | 70.43 | 75.05 | 74.79 | 64.78 | 53.06 | 41.32 | 25.44 | 52.42 | |||||||||||||
2012 | 35.48 | 36.29 | 45.47 | 54.63 | 61.92 | 73.55 | 73.27 | 72.53 | 65.28 | 55.40 | 42.30 | 33.08 | 54.10 | |||||||||||||
2013 | 28.02 | 32.61 | 45.48 | 52.18 | 60.55 | 73.25 | 73.34 | 71.06 | 64.52 | 49.87 | 40.75 | 33.44 | 52.09 | |||||||||||||
2014 | 36.69 | 42.30 | 44.06 | 50.83 | 58.61 | 71.82 | 74.32 | 68.50 | 66.05 | 56.02 | 41.13 | 35.34 | 53.81 | |||||||||||||
2015 | 34.18 | 39.79 | 47.15 | 50.60 | 56.10 | 71.60 | 71.45 | 71.94 | 67.15 | 55.19 | 39.32 | 32.02 | 53.04 | |||||||||||||
2016 | 32.50 | 39.28 | 45.87 | 50.20 | 57.00 | 72.85 | 76.32 | 68.60 | 64.65 | 57.85 | 43.37 | 36.66 | 53.76 | |||||||||||||
2017 | 36.92 | 42.25 | 48.76 | 51.72 | 57.63 | 72.17 | 74.05 | 70.68 | 64.88 | 54.27 | 48.05 | 37.11 | 54.87 | |||||||||||||
2018 | 34.39 | 39.18 | 43.44 | 54.35 | 63.76 | 73.93 | a | 75.71 | 72.58 | 66.17 | 52.31 | 39.52 | 32.87 | 54.02 | ||||||||||||
2019 | 32.24 | 35.18 | 45.08 | 52.85 | 54.82 | 68.33 | a | 74.79 | 73.45 | 65.58 | 49.47 | a | 40.47 | 33.79 | 52.17 | |||||||||||
2020 | 33.35 | 37.02 | 45.26 | 53.30 | 63.95 | 70.48 | 75.31 | 74.87 | 63.92 | 53.47 | 43.87 | 31.97 | 53.90 | |||||||||||||
2021 | 33.26 | 37.16 | 40.68 | 51.23 | 60.26 | 72.22 | 73.19 | 71.03 | 66.63 | 51.71 | 45.38 | 37.48 | 53.35 | |||||||||||||
2022 | 34.00 | 33.29 | 42.92 | 54.08 | 62.67 | a | 71.22 | 74.23 | 70.76 | 65.98 | 51.76 | 36.50 | 35.82 | 52.77 | ||||||||||||
2023 | 32.73 | 33.86 | 40.74 | 48.70 | 60.58 | 67.00 | 79.31 | 73.68 | 66.32 | 55.42 | 42.38 | 36.45 | 53.10 | |||||||||||||
2024 | 34.53 | 40.09 | 42.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.20 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.06 | 37.24 | 43.48 | 51.11 | 59.63 | 69.61 | 73.59 | 70.93 | 64.16 | 52.74 | 41.14 | 33.29 | 52.49 | |||||||||||||
S.D. | 3.09 | 2.49 | 2.34 | 2.35 | 2.70 | 2.47 | 1.93 | 1.83 | 2.09 | 2.29 | 2.64 | 3.17 | 1.15 | |||||||||||||
SKEW | -0.07 | 0.31 | 0.15 | -0.18 | 0.49 | -0.12 | 0.19 | 0.12 | -0.76 | -0.11 | -0.01 | -0.27 | -0.36 | |||||||||||||
MAX | 39.45 | 42.46 | 48.76 | 55.70 | 66.11 | 73.93 | 79.31 | 74.87 | 67.55 | 57.85 | 48.05 | 40.18 | 54.87 | |||||||||||||
MIN | 27.37 | 32.61 | 38.69 | 45.35 | 54.82 | 65.40 | 69.48 | 67.16 | 58.66 | 46.73 | 35.52 | 25.44 | 49.45 | |||||||||||||
YRS | 47 | 48 | 48 | 47 | 46 | 47 | 47 | 47 | 47 | 47 | 46 | 47 | 44 |