YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.37 | 83.00 | 80.47 | 70.40 | 55.52 | 43.53 | 39.30 | a | 64.23 | e | ||||||
1981 | 37.26 | 39.95 | 46.84 | 60.00 | 63.95 | 79.03 | a | 82.76 | 80.21 | 73.35 | 55.90 | 45.53 | 34.21 | 58.25 | ||||||||||||
1982 | 31.16 | 36.93 | a | 48.03 | 53.42 | 64.69 | 74.02 | 82.37 | 80.85 | 70.48 | 52.13 | 41.41 | b | 33.62 | a | 55.76 | ||||||||||
1983 | 32.42 | 41.52 | b | 47.32 | 51.03 | 61.44 | 72.72 | e | 82.00 | 82.08 | 74.53 | 59.05 | 45.24 | a | 32.78 | a | 56.84 | |||||||||
1984 | 23.87 | 33.82 | a | 45.67 | a | 52.16 | a | 68.80 | a | 73.43 | 82.90 | 80.39 | 72.77 | 54.00 | a | 44.86 | a | 34.82 | 55.62 | |||||||
1985 | 31.76 | 33.70 | 47.90 | 58.02 | 68.50 | 78.12 | 84.15 | 82.65 | 68.13 | 57.37 | 44.95 | b | 34.77 | 57.50 | ||||||||||||
1986 | 35.68 | a | 45.38 | 53.44 | 56.77 | 64.90 | a | 79.62 | 81.47 | 82.15 | a | 68.64 | a | 54.58 | a | 45.28 | a | 34.37 | a | 58.52 | ||||||
1987 | 30.11 | 39.82 | 44.52 | a | 58.70 | c | 66.62 | a | 77.22 | a | 78.85 | 76.89 | 68.71 | a | 57.40 | b | 42.77 | 30.69 | 56.03 | |||||||
1988 | 21.92 | a | 31.81 | 44.26 | 56.02 | a | 65.42 | 79.57 | a | 84.71 | 81.15 | a | 68.73 | d | 62.32 | a | 44.55 | 31.65 | 56.01 | |||||||
1989 | 21.47 | 32.27 | 50.90 | 61.74 | a | 67.71 | 75.88 | a | 84.61 | 79.52 | 73.21 | a | 58.65 | a | 44.97 | 31.70 | a | 56.89 | ||||||||
1990 | 30.84 | 39.98 | 52.11 | 61.37 | 65.98 | a | 79.34 | a | 84.17 | b | 81.06 | ----- | z | 56.67 | b | 42.88 | a | 27.07 | a | 56.50 | a | |||||
1991 | 21.33 | d | 34.13 | a | 46.22 | a | 52.60 | a | 64.88 | b | 75.29 | b | 81.60 | b | 79.95 | 72.19 | c | 59.39 | 42.12 | 29.82 | 54.96 | |||||
1992 | 23.69 | 38.28 | 51.08 | a | 62.48 | c | 69.18 | 75.36 | a | 80.32 | 81.32 | 71.73 | 61.57 | b | 39.75 | b | 29.18 | a | 57.00 | |||||||
1993 | 35.19 | d | 39.00 | a | 50.37 | 55.10 | 66.22 | a | 74.20 | 80.08 | 79.37 | 70.75 | b | 55.66 | 39.10 | d | 33.31 | d | 56.53 | |||||||
1994 | 33.67 | b | 37.39 | 51.00 | c | 57.28 | 66.81 | 80.85 | 84.33 | a | 84.65 | 72.62 | 56.87 | 40.50 | b | 35.18 | a | 58.43 | ||||||||
1995 | 35.97 | 46.38 | 50.26 | 54.12 | a | 60.66 | 71.70 | 79.37 | 82.23 | a | 72.02 | 56.16 | 47.43 | a | 39.04 | d | 57.94 | |||||||||
1996 | 34.42 | a | 42.69 | 49.17 | a | 55.88 | 69.76 | b | 78.03 | a | 84.10 | a | 82.88 | a | 68.27 | 55.52 | d | 44.03 | a | 35.55 | b | 58.36 | ||||
1997 | 33.82 | c | 37.22 | a | 49.14 | b | 51.86 | a | 66.64 | b | 76.93 | c | 80.69 | d | 79.26 | d | 70.87 | 56.10 | a | 42.65 | c | 32.34 | b | 56.46 | ||
1998 | 37.28 | d | 39.79 | b | 47.15 | a | 52.10 | a | 64.54 | d | 71.52 | a | 85.50 | a | 83.84 | b | 74.16 | a | 57.24 | 44.50 | 31.74 | b | 57.45 | |||
1999 | 37.45 | a | 42.27 | 52.90 | 51.87 | 62.85 | a | 74.60 | 82.98 | a | 79.23 | 69.70 | b | 58.58 | 44.66 | b | 33.69 | b | 57.56 | |||||||
2000 | 38.45 | a | 43.36 | a | 46.28 | a | 58.83 | c | 67.89 | 77.53 | a | 84.53 | 85.21 | b | 73.23 | 59.68 | 38.29 | a | 35.07 | a | 59.03 | |||||
2001 | 32.56 | 39.86 | 49.13 | a | 57.05 | b | 68.52 | c | 78.67 | a | 84.02 | a | 80.85 | 74.57 | a | 60.53 | a | 48.02 | 31.43 | a | 58.77 | |||||
2002 | 32.56 | 35.98 | 44.96 | h | 61.47 | a | 66.93 | b | 79.66 | b | 86.57 | b | 80.52 | e | 70.43 | b | 56.64 | b | 41.70 | c | 35.70 | a | 58.92 | a | ||
2003 | 37.85 | a | 39.54 | b | 48.26 | b | 56.43 | a | 65.83 | b | 77.21 | b | 87.95 | b | 83.26 | 71.04 | b | 63.28 | b | 43.12 | 35.66 | b | 59.12 | |||
2004 | 27.87 | a | 35.35 | b | 54.26 | 57.79 | d | 68.10 | a | 76.63 | d | 81.74 | b | 78.54 | d | 70.47 | a | 57.77 | a | 43.72 | a | 33.57 | a | 57.15 | ||
2005 | 40.16 | 42.02 | 47.95 | a | 56.02 | f | 66.83 | b | 72.87 | c | 85.02 | 76.94 | 70.12 | 59.31 | 44.87 | 32.15 | a | 58.02 | a | |||||||
2006 | 34.50 | 37.43 | 46.97 | 57.93 | 68.16 | 79.00 | 83.89 | 78.50 | 65.52 | a | 53.40 | 44.13 | 29.90 | a | 56.61 | |||||||||||
2007 | 29.08 | 41.23 | 49.77 | 55.13 | c | 64.90 | 77.22 | a | 84.37 | 81.32 | 71.70 | b | 55.40 | 46.75 | 30.88 | a | 57.31 | |||||||||
2008 | 28.44 | 37.07 | 46.50 | b | 53.33 | d | 62.04 | c | 77.15 | d | 83.18 | c | 80.90 | 68.91 | c | 57.97 | a | 45.00 | b | 32.93 | b | 56.12 | ||||
2009 | 29.73 | 41.18 | 48.74 | 54.77 | 69.35 | a | 73.42 | 84.90 | a | 80.66 | 73.42 | 55.21 | 43.78 | 22.23 | a | 56.45 | ||||||||||
2010 | 24.00 | 31.64 | 45.33 | a | 56.43 | 62.37 | 78.57 | 84.42 | 79.74 | 73.02 | 59.69 | 42.32 | 38.48 | a | 56.33 | |||||||||||
2011 | 26.12 | a | 35.88 | 49.35 | 54.60 | 61.19 | 76.72 | 82.60 | 83.90 | a | 73.10 | 57.66 | 43.63 | 31.53 | 56.36 | |||||||||||
2012 | 34.06 | 38.91 | 51.77 | 59.95 | 69.66 | 81.33 | 84.81 | 83.58 | 73.72 | 59.61 | 45.92 | 33.17 | a | 59.71 | ||||||||||||
2013 | 17.74 | 35.27 | 47.98 | 54.13 | 67.02 | 80.75 | 86.84 | 80.29 | 72.08 | 54.00 | n | 43.47 | 22.42 | a | 55.27 | a | ||||||||||
2014 | 30.37 | a | 42.55 | 49.21 | 54.72 | 64.89 | 76.80 | 85.69 | 77.66 | 74.32 | 59.94 | 43.38 | a | 38.47 | a | 58.17 | ||||||||||
2015 | 34.00 | 44.48 | 52.11 | 56.26 | c | 63.48 | 79.47 | 81.27 | 81.32 | a | 75.52 | 62.42 | a | 42.39 | b | 31.40 | a | 58.68 | ||||||||
2016 | 30.98 | c | 37.24 | b | 50.69 | 56.07 | a | 64.71 | 82.83 | 84.31 | 79.40 | 72.28 | 61.79 | 48.67 | a | 33.56 | d | 58.54 | ||||||||
2017 | 34.45 | 47.29 | b | 54.94 | 57.66 | a | 66.37 | 83.00 | 86.15 | a | 76.50 | w | 72.45 | a | 56.33 | a | 50.47 | 31.82 | a | 58.27 | a | |||||
2018 | 33.94 | 41.09 | 49.24 | 59.62 | 69.52 | 81.78 | 88.79 | 83.94 | 76.95 | 55.68 | 40.20 | 31.38 | j | 61.89 | a | |||||||||||
2019 | 33.55 | k | 35.11 | 47.35 | 59.23 | 61.10 | 75.30 | 85.42 | 84.87 | 76.00 | 52.45 | 43.90 | 33.53 | a | 59.48 | a | ||||||||||
2020 | 29.23 | 36.95 | 51.53 | 58.47 | 72.06 | d | 78.50 | 84.48 | 87.24 | 75.00 | d | 60.77 | 46.47 | 29.03 | 59.14 | |||||||||||
2021 | 29.66 | b | ----- | z | 50.30 | u | 59.55 | j | 69.10 | g | 81.83 | j | 87.47 | a | 82.70 | d | 74.37 | 56.27 | e | 45.26 | k | 37.22 | f | 66.09 | g | |
2022 | 32.83 | a | 35.69 | b | 48.88 | j | 59.15 | g | 66.31 | b | 79.25 | b | 86.77 | 82.94 | 75.35 | 59.42 | 41.13 | 33.68 | a | 59.34 | b | |||||
2023 | 35.03 | b | 33.98 | b | 42.30 | f | 53.93 | b | 70.04 | e | 74.39 | c | 86.66 | c | 83.17 | d | 74.92 | d | 59.29 | g | 45.72 | l | 36.19 | g | 64.02 | d |
2024 | 35.98 | b | 42.72 | d | 50.05 | i | 59.58 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.35 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.37 | 38.70 | 49.12 | 56.41 | 66.11 | 77.28 | 83.90 | 81.34 | 72.09 | 57.66 | 43.86 | 32.72 | 57.38 | |||||||||||||
S.D. | 5.21 | 3.92 | 2.62 | 3.01 | 2.75 | 2.89 | 2.27 | 2.26 | 2.48 | 2.69 | 2.50 | 3.58 | 1.21 | |||||||||||||
SKEW | -0.74 | 0.17 | 0.24 | 0.15 | -0.20 | -0.10 | -0.17 | 0.24 | -0.35 | 0.09 | 0.14 | -0.85 | 0.05 | |||||||||||||
MAX | 40.16 | 47.29 | 54.94 | 62.48 | 72.06 | 83.00 | 88.79 | 87.24 | 76.95 | 63.28 | 50.47 | 39.30 | 59.71 | |||||||||||||
MIN | 17.74 | 31.64 | 44.26 | 51.03 | 60.66 | 71.52 | 78.85 | 76.89 | 65.52 | 52.13 | 38.29 | 22.23 | 54.96 | |||||||||||||
YRS | 43 | 43 | 39 | 40 | 42 | 43 | 44 | 43 | 43 | 42 | 42 | 41 | 33 |