YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | 45.48 | j | 50.57 | d | 63.06 | c | 70.20 | i | 67.22 | a | 59.55 | 51.72 | b | 36.61 | b | 19.35 | a | 49.73 | e | |
1979 | 17.84 | c | 23.94 | a | 32.77 | 44.10 | 52.06 | 61.70 | 68.34 | 66.65 | 63.77 | 52.37 | 27.62 | b | 27.60 | a | 44.90 | |||||||||
1980 | 24.82 | 32.05 | 32.33 | b | 42.67 | c | 48.45 | 63.76 | a | 70.35 | 67.79 | 59.88 | 47.71 | 35.82 | 34.32 | 46.66 | ||||||||||
1981 | 31.77 | a | 31.71 | 35.84 | 49.10 | a | 51.32 | 65.65 | 69.50 | 67.76 | 60.70 | 45.37 | 38.53 | 29.78 | a | 48.09 | ||||||||||
1982 | 22.52 | b | 27.42 | b | 36.50 | c | 41.47 | a | 51.82 | 60.58 | 68.66 | 68.21 | 59.41 | a | 43.52 | b | 32.82 | 25.02 | a | 44.83 | ||||||
1983 | 27.36 | b | 28.71 | b | 36.28 | b | 38.91 | b | 48.73 | a | 60.03 | a | 68.11 | 68.75 | a | 62.60 | a | 49.05 | 34.97 | 23.70 | c | 45.60 | ||||
1984 | 18.84 | 24.19 | b | 33.50 | a | 40.34 | a | 56.34 | 61.22 | 70.40 | 68.65 | 60.87 | 42.10 | a | 35.62 | b | 29.07 | a | 45.09 | |||||||
1985 | 22.45 | 23.93 | a | 35.56 | 47.40 | 55.55 | 64.35 | 70.85 | 69.24 | 54.46 | c | 48.37 | 33.21 | a | 27.15 | a | 46.04 | |||||||||
1986 | 31.18 | a | 32.79 | b | 41.67 | b | 45.02 | 51.79 | 65.25 | 67.13 | 69.16 | b | 54.87 | 46.13 | 36.19 | a | 28.85 | 47.50 | ||||||||
1987 | 23.50 | i | 29.69 | b | 33.00 | a | 47.03 | 54.27 | 64.75 | 67.29 | 64.85 | 58.45 | a | 50.97 | 34.30 | 24.42 | 48.09 | a | ||||||||
1988 | 19.19 | b | 27.34 | 33.60 | b | 44.23 | 52.05 | 65.69 | a | 70.82 | 68.61 | 57.18 | 53.30 | a | 34.12 | b | 24.97 | a | 45.93 | |||||||
1989 | 18.61 | 25.21 | 40.37 | a | 48.64 | a | 54.89 | 62.87 | 72.34 | 67.19 | 61.42 | 48.97 | 37.47 | 27.12 | a | 47.09 | ||||||||||
1990 | 27.96 | r | 29.34 | c | 39.82 | a | 48.10 | a | 53.13 | 67.75 | 71.97 | 68.00 | c | 63.28 | a | 48.79 | 35.71 | a | 18.59 | b | 49.50 | a | ||||
1991 | 18.55 | c | 30.57 | a | 33.91 | c | 41.62 | a | 53.42 | 63.13 | 69.05 | 69.16 | 61.10 | a | 50.23 | a | 34.89 | b | 23.88 | a | 45.79 | |||||
1992 | 19.97 | 30.12 | 40.52 | 50.10 | a | 57.06 | g | 61.70 | 66.68 | 67.76 | 60.21 | a | 52.26 | 30.07 | 22.60 | a | 45.63 | a | ||||||||
1993 | 28.64 | b | 29.43 | e | 38.73 | a | 45.02 | e | 54.80 | a | 60.13 | 67.53 | 66.47 | 58.18 | 47.78 | a | 30.89 | b | 25.55 | 46.10 | ||||||
1994 | 27.94 | 27.50 | f | 40.90 | a | 46.50 | b | 54.47 | 70.13 | o | 72.85 | 72.66 | 61.98 | 48.48 | a | 31.81 | c | 28.53 | 48.61 | b | ||||||
1995 | 25.82 | a | 36.98 | a | 39.32 | a | 41.78 | a | 48.45 | 58.73 | 68.10 | 70.33 | a | 61.62 | 49.29 | b | 40.76 | a | 31.21 | 47.70 | ||||||
1996 | 27.70 | a | 34.22 | b | 37.82 | a | 44.38 | 58.10 | 66.37 | 73.81 | 71.69 | 57.55 | 46.77 | a | 35.97 | a | 27.71 | b | 48.51 | |||||||
1997 | 28.45 | 28.96 | a | 40.43 | a | 41.20 | 55.65 | 64.42 | 70.03 | a | 67.84 | 61.67 | 49.06 | d | 34.52 | f | 23.62 | a | 48.30 | a | ||||||
1998 | 28.87 | 28.40 | b | 36.47 | 40.78 | 52.43 | b | 59.42 | 71.93 | a | 69.39 | 63.29 | a | 49.65 | 38.07 | b | 23.69 | m | 48.97 | a | ||||||
1999 | 18.19 | b | 23.17 | d | 40.90 | ----- | z | 52.87 | a | 60.43 | 67.98 | a | 64.06 | g | 56.08 | j | 49.93 | b | 40.74 | a | ----- | z | 44.28 | d | ||
2000 | ----- | z | ----- | z | 36.14 | b | ----- | z | ----- | z | 63.30 | t | 70.87 | a | 67.91 | t | 61.89 | b | 48.05 | c | 28.96 | b | 29.05 | 45.83 | f | |
2001 | 24.45 | a | 30.64 | 39.19 | 46.00 | a | 57.16 | 66.31 | c | 71.28 | a | 68.02 | a | 62.57 | i | 50.05 | c | 37.63 | d | 22.53 | a | 46.66 | a | |||
2002 | 22.79 | b | 25.48 | 34.97 | a | 48.67 | 55.16 | b | 68.22 | 73.68 | 68.98 | 59.07 | b | 45.65 | 34.33 | 27.66 | 47.05 | |||||||||
2003 | 33.60 | 29.04 | 37.13 | a | 45.17 | a | 56.40 | 64.00 | 75.93 | a | 71.80 | c | 60.28 | c | 54.22 | a | 35.23 | 29.37 | 49.35 | |||||||
2004 | 24.05 | b | 26.00 | 45.22 | b | 45.93 | 55.88 | a | 64.97 | 68.87 | a | 67.82 | 58.92 | 48.02 | 35.20 | 28.47 | 47.45 | |||||||||
2005 | 33.94 | 34.44 | a | 37.18 | 46.32 | e | 56.14 | q | 61.62 | a | 74.00 | c | 66.61 | h | 59.80 | g | 48.50 | h | 38.10 | e | 30.72 | o | 46.51 | e | ||
2006 | 29.96 | e | 31.54 | e | 35.06 | g | 48.55 | i | 57.09 | t | 63.93 | w | 71.55 | k | 67.89 | q | 54.48 | i | 47.14 | j | 37.04 | e | 26.18 | q | 32.85 | i |
2007 | 24.89 | h | 33.58 | d | 39.79 | n | 46.00 | k | 56.41 | t | 65.11 | l | 73.92 | m | 71.07 | p | 62.20 | h | 49.52 | g | 41.40 | o | 23.12 | f | 33.58 | k |
2008 | 22.22 | h | 26.85 | f | 33.40 | p | 43.32 | p | 51.62 | j | 61.96 | p | 72.12 | o | 70.43 | j | 60.79 | i | 48.84 | b | 39.45 | a | 25.88 | b | 38.06 | i |
2009 | 27.48 | 33.37 | a | 40.32 | a | 44.40 | 57.28 | a | 61.33 | 72.20 | c | 70.17 | e | 60.50 | a | 44.05 | a | 38.08 | 20.29 | 47.46 | ||||||
2010 | 23.92 | 25.06 | a | 34.08 | 45.57 | 50.85 | d | 64.80 | 71.63 | 67.79 | 63.13 | 50.63 | a | 33.75 | 33.62 | c | 47.07 | |||||||||
2011 | 22.00 | 26.50 | 39.53 | 42.15 | 50.05 | 63.63 | 70.87 | 71.73 | 61.35 | 48.00 | 36.38 | 26.18 | 46.53 | |||||||||||||
2012 | 29.44 | 28.93 | 41.27 | 49.32 | 57.87 | 69.90 | 72.40 | 72.11 | 62.43 | 50.26 | 41.92 | 26.76 | 50.22 | |||||||||||||
2013 | 19.03 | a | 26.52 | a | 40.06 | 43.77 | 54.81 | 69.27 | 73.50 | 68.74 | 61.60 | 45.21 | 37.20 | 22.94 | 46.89 | |||||||||||
2014 | 29.48 | 33.84 | 39.87 | 45.47 | 55.05 | 66.25 | 72.79 | 64.34 | 63.13 | 51.55 | 36.97 | 30.15 | 49.07 | |||||||||||||
2015 | 31.21 | 36.61 | 43.44 | 45.50 | 51.57 | a | 68.27 | 69.02 | 69.90 | 65.13 | 52.82 | 34.75 | 29.29 | x | 51.66 | a | ||||||||||
2016 | ----- | z | 33.65 | c | 40.50 | 45.40 | 52.77 | 70.50 | 72.39 | 67.69 | 60.48 | 54.29 | 41.40 | 28.53 | 51.60 | a | ||||||||||
2017 | 26.24 | 36.39 | 43.73 | 45.68 | 53.31 | 69.57 | 72.69 | 69.95 | 62.52 | 50.05 | 44.12 | 31.80 | a | 50.50 | ||||||||||||
2018 | 31.90 | 32.89 | 39.47 | 50.72 | a | 59.91 | c | 70.04 | c | 75.05 | 71.76 | 65.85 | 46.60 | 34.52 | a | 25.98 | 50.39 | |||||||||
2019 | 25.34 | 25.05 | 36.66 | 48.28 | 48.92 | 63.16 | a | 72.42 | 71.94 | 65.18 | b | 43.53 | 37.52 | 28.02 | a | 47.17 | ||||||||||
2020 | 25.20 | a | 29.53 | 40.70 | a | 45.90 | 59.34 | b | 65.80 | 73.06 | 74.92 | 63.05 | 51.65 | 39.62 | 25.34 | 49.51 | ||||||||||
2021 | 26.06 | 29.43 | 36.90 | 47.58 | 56.15 | a | 70.57 | 74.74 | 70.18 | a | 63.57 | 47.13 | 41.42 | 31.10 | 49.57 | |||||||||||
2022 | 28.47 | 28.52 | a | 38.06 | 46.25 | 55.56 | 67.50 | 74.32 | a | 70.53 | 65.70 | 48.57 | a | 31.68 | 28.42 | a | 48.63 | |||||||||
2023 | 25.23 | 25.05 | 30.48 | 44.40 | 57.28 | a | 62.76 | a | 75.47 | 70.68 | 63.00 | b | 51.81 | b | 39.76 | a | 32.41 | c | 48.19 | |||||||
2024 | 30.02 | a | 34.57 | a | 39.15 | d | 45.42 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.58 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.71 | 29.65 | 38.01 | 45.27 | 53.91 | 64.62 | 71.21 | 69.16 | 61.22 | 48.90 | 36.16 | 26.94 | 47.50 | |||||||||||||
S.D. | 4.58 | 3.78 | 3.31 | 2.81 | 2.99 | 3.28 | 2.49 | 2.14 | 2.62 | 2.90 | 3.51 | 3.64 | 1.64 | |||||||||||||
SKEW | -0.18 | 0.14 | -0.19 | -0.21 | -0.09 | 0.19 | -0.07 | 0.25 | -0.54 | -0.28 | -0.17 | -0.24 | 0.23 | |||||||||||||
MAX | 33.94 | 36.98 | 45.22 | 50.72 | 59.91 | 70.57 | 75.93 | 74.92 | 65.85 | 54.29 | 44.12 | 34.32 | 50.50 | |||||||||||||
MIN | 17.84 | 23.17 | 30.48 | 38.91 | 48.45 | 58.73 | 66.68 | 64.34 | 54.46 | 42.10 | 27.63 | 18.59 | 44.83 | |||||||||||||
YRS | 40 | 43 | 43 | 40 | 40 | 41 | 42 | 40 | 40 | 43 | 44 | 40 | 30 |