YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | 55.10 | 62.83 | 69.79 | 66.37 | a | 63.90 | d | 52.39 | 33.80 | c | 29.82 | 54.25 | d | |||||
1980 | 32.56 | 36.36 | 36.45 | b | 46.03 | a | 51.65 | 61.75 | 69.77 | 65.92 | 60.55 | i | 49.21 | 36.25 | j | 37.79 | 48.75 | b | ||||||||
1981 | 35.16 | 35.27 | 38.89 | 50.75 | 54.82 | 67.73 | 72.32 | 68.27 | 61.38 | 48.95 | 40.40 | 33.45 | 50.62 | |||||||||||||
1982 | 28.37 | d | 32.28 | a | 39.80 | c | 44.80 | 53.41 | c | 61.63 | 69.06 | 69.05 | 60.24 | a | 45.47 | 36.55 | 30.66 | 47.61 | ||||||||
1983 | 30.73 | 35.59 | 39.70 | a | 41.87 | 53.52 | 62.79 | a | 69.36 | b | 69.35 | 61.91 | a | 49.71 | b | 38.85 | 32.68 | 48.84 | ||||||||
1984 | 28.66 | c | 32.97 | 40.48 | a | 44.26 | a | 61.16 | 64.93 | h | 72.63 | 69.79 | 63.43 | 45.27 | 36.72 | 28.13 | 47.59 | a | ||||||||
1985 | 28.74 | 30.68 | 40.80 | d | 51.61 | b | 56.16 | 66.82 | 72.76 | 69.60 | 57.42 | 50.48 | a | 38.43 | 33.70 | a | 49.77 | |||||||||
1986 | 35.87 | 38.71 | 45.39 | 49.08 | 56.23 | 66.80 | 68.98 | 70.69 | 55.70 | b | 47.24 | 39.32 | 32.06 | 50.51 | ||||||||||||
1987 | 28.60 | 35.00 | 37.71 | 49.53 | a | 55.08 | 66.32 | 67.79 | 67.12 | a | 61.95 | k | 53.13 | a | 37.79 | a | 28.90 | 47.91 | a | |||||||
1988 | 29.05 | 37.14 | a | 39.11 | 48.14 | b | 54.69 | b | 67.30 | b | 72.29 | 69.13 | 59.33 | 55.60 | 39.07 | 27.77 | 49.89 | |||||||||
1989 | 21.45 | b | 29.46 | a | 45.56 | 52.65 | 56.55 | 64.62 | 73.13 | 67.39 | 60.24 | a | 49.11 | 41.20 | 33.90 | 49.61 | ||||||||||
1990 | 30.03 | 34.70 | a | 42.56 | 50.15 | 55.05 | 67.32 | 71.92 | 67.79 | 64.03 | 50.55 | 38.55 | a | 23.84 | b | 49.71 | ||||||||||
1991 | 27.02 | a | 38.46 | 36.08 | 45.32 | 53.55 | 63.02 | 72.60 | b | 70.67 | a | 63.32 | 54.07 | b | 38.98 | 29.22 | b | 49.36 | ||||||||
1992 | 26.07 | b | 36.80 | a | 41.53 | a | 53.68 | b | 57.80 | a | 64.55 | 68.88 | a | 69.15 | 62.32 | 54.63 | 36.76 | a | 26.12 | a | 49.86 | |||||
1993 | 28.34 | b | 32.07 | a | 43.03 | a | 50.22 | 57.26 | 62.87 | 68.60 | 68.19 | 61.85 | 49.98 | a | 36.93 | a | 31.06 | 49.20 | ||||||||
1994 | 33.45 | 31.25 | 44.90 | a | 49.57 | a | 57.80 | d | 69.83 | a | 73.45 | a | 73.37 | a | 63.65 | 49.88 | c | 34.09 | c | 31.59 | d | 51.07 | ||||
1995 | 31.45 | 42.83 | a | 42.75 | c | 46.05 | a | 52.04 | c | 59.98 | f | 69.72 | b | 72.07 | a | 64.68 | 52.19 | 43.81 | a | 34.36 | c | 50.18 | a | |||
1996 | 32.76 | b | 40.27 | a | 42.77 | 49.50 | a | 60.31 | 68.15 | 75.50 | 72.26 | 61.07 | a | 50.00 | b | 40.46 | c | 33.70 | a | 52.23 | ||||||
1997 | 30.68 | c | 35.41 | a | 44.24 | 46.22 | a | 60.39 | c | 64.84 | a | 70.83 | a | 69.62 | b | 63.73 | b | 49.73 | 40.38 | 31.02 | d | 50.59 | ||||
1998 | 34.23 | a | 34.04 | 41.22 | b | 45.10 | 54.10 | 60.98 | a | 72.70 | a | 71.42 | 62.00 | 48.84 | 39.53 | 32.62 | a | 49.73 | ||||||||
1999 | 36.33 | a | 37.96 | 43.42 | a | 43.40 | a | 54.47 | a | 64.31 | a | 71.11 | c | 68.88 | b | 61.98 | b | 53.02 | 42.38 | 32.69 | 50.83 | |||||
2000 | 35.45 | 37.72 | b | 41.74 | 54.13 | 62.50 | 70.07 | a | 73.34 | 72.50 | b | 63.93 | a | 50.60 | a | 33.77 | 34.47 | 52.52 | ||||||||
2001 | 30.12 | a | 36.07 | 44.19 | 49.32 | 61.37 | a | 67.37 | 71.73 | 71.97 | 64.69 | a | 54.30 | a | 41.19 | a | 29.83 | a | 51.84 | |||||||
2002 | 31.27 | 34.11 | 40.52 | b | 52.88 | 58.53 | b | 70.43 | 77.47 | 71.98 | 64.48 | d | 49.22 | a | 40.11 | b | 30.88 | a | 51.82 | |||||||
2003 | 39.06 | 36.30 | 42.55 | a | 46.09 | c | 60.19 | b | 68.19 | a | 77.16 | 73.76 | 65.55 | 57.50 | 37.55 | b | 31.15 | a | 52.92 | |||||||
2004 | 30.34 | c | 30.25 | a | 47.34 | 49.77 | b | 57.98 | b | 67.24 | a | 72.03 | a | 70.53 | a | 61.53 | a | 50.32 | 38.77 | 34.60 | b | 50.89 | ||||
2005 | 36.52 | 37.52 | c | 39.91 | b | 48.03 | 56.34 | b | 58.62 | a | ----- | z | 67.82 | a | 61.78 | u | 49.43 | x | 38.89 | b | 30.07 | d | 45.97 | c | ||
2006 | 30.31 | 34.46 | 35.62 | a | 48.12 | 57.61 | 67.21 | a | 73.66 | 68.50 | 57.72 | a | 48.55 | c | 38.80 | b | 29.65 | 49.18 | ||||||||
2007 | 27.21 | 36.30 | 42.48 | 48.50 | 56.27 | a | 65.39 | b | 72.89 | l | 70.34 | i | 61.58 | j | 48.31 | b | 43.71 | m | 28.37 | 44.10 | d | |||||
2008 | 25.20 | a | 33.02 | 40.55 | 45.13 | c | 52.13 | e | 63.08 | 72.42 | 70.94 | 61.25 | 49.95 | 41.47 | 27.53 | 48.56 | ||||||||||
2009 | 31.73 | 34.45 | 40.58 | 46.18 | 60.69 | 61.60 | 72.34 | 68.28 | a | 62.70 | 47.08 | 37.80 | 23.50 | 48.91 | ||||||||||||
2010 | 26.73 | 29.98 | 39.81 | 46.02 | 51.87 | 64.57 | 72.00 | 67.85 | 61.57 | 50.97 | 36.37 | 35.97 | 48.64 | |||||||||||||
2011 | 30.50 | 31.04 | 40.47 | 46.20 | 51.78 | a | 61.85 | 70.74 | 70.98 | 62.42 | 50.24 | 36.28 | 28.05 | 48.38 | ||||||||||||
2012 | 33.61 | 34.55 | 41.66 | 49.62 | 58.92 | 67.37 | 72.11 | 71.39 | 62.80 | 51.60 | 39.82 | 28.32 | 50.98 | |||||||||||||
2013 | 24.76 | 33.27 | 42.87 | 47.42 | 54.76 | 67.37 | 73.19 | 69.02 | 61.90 | 46.10 | 38.37 | 26.85 | 48.82 | |||||||||||||
2014 | 35.47 | 36.70 | 41.39 | 47.77 | 54.85 | 64.78 | 74.00 | 67.06 | 63.62 | a | 52.69 | 39.42 | 33.00 | 50.90 | ||||||||||||
2015 | 33.71 | 38.70 | 43.65 | a | 45.52 | 52.52 | 66.27 | 69.16 | 70.39 | 63.86 | a | 54.39 | 34.90 | a | 27.90 | 50.08 | ||||||||||
2016 | 28.40 | 37.02 | 43.26 | 48.35 | 54.65 | 68.38 | 70.98 | b | 68.18 | 60.18 | b | 53.18 | 40.75 | 30.58 | 50.33 | |||||||||||
2017 | 30.29 | 38.28 | c | 45.44 | 47.70 | 54.95 | 68.33 | 73.19 | 69.95 | a | 61.26 | a | 49.37 | a | 41.95 | b | 33.23 | 51.16 | ||||||||
2018 | 34.57 | b | 32.96 | 39.92 | 51.43 | 57.52 | 68.90 | 75.40 | a | 70.43 | c | 63.00 | 49.07 | b | 38.59 | b | 30.02 | 50.98 | ||||||||
2019 | 30.02 | 27.04 | 41.11 | 51.90 | f | 50.15 | 63.69 | a | 70.77 | 70.41 | b | 63.29 | b | 44.47 | 37.55 | 28.32 | 47.89 | a | ||||||||
2020 | 29.02 | 34.14 | 40.52 | 49.03 | a | 58.17 | b | 65.68 | 70.60 | 71.65 | 62.24 | c | 52.29 | 36.50 | b | 25.66 | 49.62 | |||||||||
2021 | 27.57 | a | 34.37 | b | 37.69 | 49.00 | 57.79 | c | 70.52 | b | 75.37 | 70.44 | 64.03 | 47.48 | 40.72 | 28.18 | 50.26 | |||||||||
2022 | 28.73 | 32.54 | a | 40.13 | a | 48.68 | 56.77 | 67.42 | 74.00 | 71.48 | 65.07 | 50.50 | 33.25 | 28.68 | 49.77 | |||||||||||
2023 | 28.82 | 28.75 | 34.50 | c | 45.25 | 58.00 | i | 60.72 | 72.13 | 69.92 | 61.37 | 51.00 | 39.09 | g | 30.38 | b | 48.28 | b | ||||||||
2024 | 31.18 | 35.98 | 40.66 | 47.38 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.94 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.67 | 34.73 | 41.22 | 48.09 | 56.12 | 65.57 | 72.02 | 69.81 | 62.21 | 50.42 | 38.50 | 30.45 | 50.17 | |||||||||||||
S.D. | 3.56 | 3.20 | 2.73 | 2.77 | 2.98 | 2.92 | 2.22 | 1.85 | 2.09 | 2.79 | 2.42 | 3.08 | 1.22 | |||||||||||||
SKEW | 0.05 | -0.12 | -0.26 | 0.15 | 0.17 | -0.30 | 0.34 | 0.00 | -1.07 | 0.16 | -0.30 | -0.02 | 0.26 | |||||||||||||
MAX | 39.06 | 42.83 | 47.34 | 54.13 | 62.50 | 70.52 | 77.47 | 73.76 | 65.55 | 57.50 | 43.81 | 37.79 | 52.92 | |||||||||||||
MIN | 21.45 | 27.04 | 34.50 | 41.87 | 50.15 | 58.62 | 67.79 | 65.92 | 55.70 | 44.47 | 33.25 | 23.50 | 47.61 | |||||||||||||
YRS | 45 | 45 | 45 | 43 | 44 | 43 | 43 | 44 | 41 | 44 | 42 | 45 | 36 |