YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | 34.60 | 42.36 | 44.08 | 49.20 | 52.39 | 55.20 | 60.66 | 59.16 | 56.75 | 50.53 | 46.43 | a | 42.85 | a | 49.52 | |||||||||||
1981 | 41.18 | a | 42.54 | 45.53 | a | 48.00 | a | 52.15 | 56.40 | a | 59.76 | 63.05 | 56.75 | 48.50 | 44.23 | 40.53 | 49.88 | |||||||||
1982 | 38.59 | c | 41.09 | e | 41.64 | b | 43.98 | 51.82 | a | 57.87 | 58.61 | 59.88 | a | 57.67 | a | 50.64 | c | 40.58 | f | 37.95 | c | 49.07 | a | |||
1983 | 43.16 | i | 44.54 | d | 46.29 | c | 47.66 | b | 55.02 | b | 56.73 | 60.08 | 61.53 | a | 54.38 | b | 49.08 | g | 45.18 | h | 34.41 | h | 53.28 | d | ||
1984 | 42.10 | e | 42.90 | e | 46.84 | c | 46.48 | c | 50.32 | a | 56.03 | 60.35 | a | 59.94 | 56.31 | a | 48.22 | a | 43.52 | 36.90 | 49.16 | |||||
1985 | 36.42 | 38.52 | 41.47 | a | 48.50 | 52.42 | a | 56.02 | 62.58 | 59.94 | 55.28 | a | 49.12 | a | 37.02 | b | 34.26 | 47.63 | ||||||||
1986 | 42.77 | a | 41.50 | 47.71 | c | 46.17 | 51.75 | a | 58.67 | 57.50 | 62.71 | e | 56.24 | a | 52.88 | a | 45.40 | 40.40 | 50.31 | |||||||
1987 | 39.82 | 43.88 | c | 47.50 | a | 50.48 | a | 54.68 | a | 57.32 | 59.25 | a | 61.66 | 59.37 | d | 52.37 | a | 46.52 | a | 39.61 | 51.04 | |||||
1988 | 39.82 | a | 43.30 | a | 44.79 | 49.17 | 52.21 | 55.47 | 60.31 | 60.13 | 56.16 | a | 54.08 | 44.87 | 40.37 | 50.06 | ||||||||||
1989 | 40.42 | 33.77 | b | 42.70 | a | 50.48 | 52.71 | 58.80 | 59.26 | 60.40 | 59.21 | a | 51.11 | 45.85 | 43.32 | 49.84 | ||||||||||
1990 | 44.05 | 39.77 | b | 46.39 | 50.33 | 52.24 | 56.73 | 63.26 | 62.82 | a | 60.95 | 50.18 | 47.98 | 34.85 | 50.80 | |||||||||||
1991 | 39.92 | 47.27 | 42.19 | b | 47.16 | a | 51.42 | 54.73 | 60.71 | 61.02 | 60.10 | 49.90 | 46.03 | 42.69 | 50.26 | |||||||||||
1992 | 42.68 | 46.29 | 49.15 | 50.31 | a | 55.21 | 60.05 | 62.05 | 61.88 | a | 56.17 | 51.60 | 44.53 | a | 38.35 | 51.52 | ||||||||||
1993 | 33.94 | 38.28 | a | 45.68 | 48.47 | 56.60 | 57.48 | 59.31 | 62.02 | a | 58.35 | 52.32 | a | 38.95 | 39.22 | a | 49.22 | |||||||||
1994 | 44.16 | 39.02 | 46.77 | 49.55 | a | 53.71 | 56.00 | 61.21 | 61.63 | 60.33 | 48.26 | 39.52 | a | 39.85 | 50.00 | |||||||||||
1995 | 42.65 | 44.21 | 44.58 | 47.30 | 54.33 | a | 57.55 | 62.56 | 59.42 | 61.59 | a | 50.90 | 47.95 | 41.27 | 51.19 | |||||||||||
1996 | 40.19 | 41.32 | a | 45.02 | 49.62 | 50.35 | 55.63 | 62.58 | 61.94 | 55.78 | a | 49.48 | 42.55 | 40.19 | 49.55 | |||||||||||
1997 | 40.98 | 42.21 | 44.74 | 47.07 | 55.79 | 57.58 | 61.39 | 64.08 | 60.28 | 50.68 | 46.73 | 39.97 | 50.96 | |||||||||||||
1998 | 41.39 | 44.11 | 45.76 | 47.43 | 53.06 | 57.57 | 62.87 | 62.37 | 58.67 | 50.29 | 45.63 | 39.45 | 50.72 | |||||||||||||
1999 | 41.26 | 41.93 | 41.81 | 46.09 | a | 50.31 | 55.65 | 59.10 | 61.56 | 56.86 | a | 49.15 | 46.60 | 41.31 | 49.30 | |||||||||||
2000 | 38.27 | 41.09 | a | 43.31 | 48.89 | b | 52.56 | 57.75 | 61.06 | 59.65 | a | 57.13 | 50.66 | 40.38 | b | 39.68 | 49.20 | |||||||||
2001 | 39.76 | 39.48 | 44.39 | 46.12 | 52.77 | 54.02 | d | 58.74 | b | 60.22 | f | 56.46 | g | 49.12 | e | 44.73 | j | 39.08 | f | 48.05 | d | |||||
2002 | 39.98 | j | 40.86 | c | 41.63 | e | 47.69 | f | 50.33 | d | 56.98 | e | 61.95 | c | 59.68 | c | 56.58 | d | 47.81 | e | 44.46 | e | 40.86 | i | 51.14 | c |
2003 | 43.80 | k | 41.18 | f | 46.77 | e | 47.24 | e | 51.94 | d | 59.09 | b | 63.00 | c | 61.50 | b | 59.64 | h | 52.37 | h | 39.43 | h | 39.83 | h | 54.92 | f |
2004 | 38.88 | g | 42.46 | d | 45.96 | d | 49.40 | e | 53.84 | b | 58.70 | b | 63.78 | a | 63.96 | d | 56.15 | d | 51.39 | d | 41.38 | i | 41.00 | h | 53.96 | c |
2005 | 40.33 | g | 39.96 | e | 47.24 | f | 49.19 | c | 55.58 | e | 57.18 | b | 61.32 | c | 62.02 | c | 54.96 | d | 50.71 | g | 41.06 | e | 38.20 | f | 52.66 | d |
2006 | 43.41 | h | 39.42 | h | 43.50 | 47.98 | 52.48 | 58.65 | 61.66 | 59.63 | 57.52 | 48.53 | 43.27 | 39.26 | 51.25 | b | ||||||||||
2007 | 37.39 | 42.27 | 45.39 | 46.57 | 51.52 | 55.95 | 62.29 | 60.13 | 55.68 | 47.82 | 41.55 | 39.68 | 48.85 | |||||||||||||
2008 | 36.65 | 42.36 | 40.79 | 43.73 | 53.89 | 53.62 | a | 59.03 | 61.05 | 57.25 | 47.68 | a | 46.18 | 36.58 | 48.23 | |||||||||||
2009 | 38.70 | a | 38.39 | 40.94 | 45.92 | 51.26 | 56.95 | 61.72 | b | 60.23 | 58.33 | 49.07 | a | 44.35 | 34.50 | e | 48.36 | |||||||||
2010 | 43.95 | 43.54 | 44.11 | 46.38 | 49.24 | 54.70 | 58.71 | 59.40 | 58.30 | 49.35 | 41.50 | 40.48 | a | 49.14 | ||||||||||||
2011 | 40.08 | 37.38 | b | 43.02 | 43.07 | 48.45 | 54.90 | 58.71 | 60.15 | 58.50 | 49.81 | 40.32 | 35.81 | 47.52 | ||||||||||||
2012 | 37.61 | 41.14 | 41.90 | 47.55 | 51.42 | 54.35 | 59.61 | 61.72 | a | 57.22 | 49.50 | 44.57 | a | 40.31 | 48.91 | |||||||||||
2013 | 35.29 | 41.98 | 45.29 | 46.63 | 53.40 | 58.25 | 60.48 | 61.47 | 58.80 | 48.87 | 43.32 | 35.33 | a | 49.09 | ||||||||||||
2014 | 41.27 | 39.50 | 45.89 | 47.77 | 54.48 | 57.67 | 62.23 | 63.85 | 59.95 | 55.97 | 42.93 | 42.60 | 51.18 | |||||||||||||
2015 | 43.50 | 46.36 | 47.65 | 47.12 | 54.52 | 60.87 | 64.23 | 63.55 | 55.90 | a | 54.13 | 41.02 | 41.90 | 51.73 | ||||||||||||
2016 | 42.13 | 45.28 | 46.61 | 51.53 | 54.63 | 57.78 | 61.15 | 62.85 | 57.13 | 51.81 | 47.80 | 36.53 | 51.27 | |||||||||||||
2017 | 35.00 | 39.75 | 44.06 | 46.52 | 52.73 | 57.80 | 59.85 | 63.23 | 59.23 | 48.85 | 43.42 | 38.00 | 49.04 | |||||||||||||
2018 | 43.42 | 39.55 | 42.11 | 47.57 | 54.81 | 55.40 | 62.21 | 62.11 | 56.87 | 50.03 | 44.57 | 41.27 | 49.99 | |||||||||||||
2019 | 42.00 | 34.86 | 42.11 | 48.12 | 55.77 | a | 56.32 | 60.87 | 62.40 | 58.10 | 46.42 | 43.62 | a | 41.69 | 49.36 | |||||||||||
2020 | 44.48 | 41.91 | 41.40 | 47.98 | 54.55 | 57.27 | 59.60 | 60.55 | 61.17 | 51.85 | 44.15 | 42.79 | 50.64 | |||||||||||||
2021 | 42.26 | 40.46 | 41.79 | 47.52 | 51.55 | 60.92 | 61.18 | 62.21 | 57.37 | 49.73 | 47.07 | 38.90 | 50.08 | |||||||||||||
2022 | 40.23 | a | 41.62 | 45.37 | 44.20 | 50.34 | 57.70 | 63.27 | 64.21 | 60.48 | 54.18 | 39.90 | 39.45 | 50.08 | ||||||||||||
2023 | 41.65 | 39.34 | 41.44 | 46.17 | 55.74 | 56.40 | 61.89 | 64.63 | 57.45 | 51.95 | 42.05 | 44.42 | 50.26 | |||||||||||||
2024 | 41.58 | 43.52 | 44.32 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.14 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.31 | 41.44 | 44.33 | 47.60 | 52.87 | 56.97 | 60.95 | 61.57 | 57.79 | 50.36 | 43.79 | 39.54 | 49.83 | |||||||||||||
S.D. | 2.80 | 2.78 | 2.18 | 1.88 | 1.93 | 1.68 | 1.61 | 1.50 | 1.80 | 2.03 | 2.69 | 2.55 | 1.05 | |||||||||||||
SKEW | -0.64 | -0.38 | 0.07 | -0.27 | -0.10 | 0.26 | -0.02 | 0.21 | 0.34 | 0.67 | -0.46 | -0.40 | -0.23 | |||||||||||||
MAX | 44.48 | 47.27 | 49.15 | 51.53 | 56.60 | 60.92 | 64.23 | 64.63 | 61.59 | 55.97 | 47.98 | 44.42 | 51.73 | |||||||||||||
MIN | 33.94 | 33.77 | 40.79 | 43.07 | 48.45 | 53.62 | 57.50 | 59.16 | 54.38 | 46.42 | 37.02 | 34.26 | 47.52 | |||||||||||||
YRS | 39 | 43 | 44 | 43 | 44 | 44 | 44 | 43 | 42 | 41 | 39 | 38 | 36 |