YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | 44.45 | t | 47.37 | 49.16 | 53.10 | 48.57 | 43.23 | 41.60 | 36.40 | a | 45.63 | e | ||||||
1972 | 34.83 | b | 39.41 | 40.63 | a | 37.33 | 43.65 | 47.67 | 50.03 | 50.39 | 45.87 | 41.97 | 42.60 | 34.17 | a | 42.38 | ||||||||||
1973 | 36.11 | c | 39.64 | 37.61 | 39.33 | 43.42 | 47.53 | 49.39 | 48.23 | 49.79 | a | 44.68 | 41.61 | b | 41.84 | 43.26 | ||||||||||
1974 | 34.71 | 37.46 | 39.32 | 40.37 | 42.97 | 46.53 | 49.13 | 50.42 | 48.20 | 42.13 | 41.97 | 39.35 | 42.71 | |||||||||||||
1975 | 39.13 | 37.93 | 37.00 | 36.13 | 42.71 | 45.93 | a | 49.81 | 48.74 | 47.77 | 46.72 | b | 39.43 | 38.73 | a | 42.50 | ||||||||||
1976 | 37.81 | 35.62 | 36.29 | 37.23 | 42.26 | 44.59 | c | 49.84 | 52.23 | 49.70 | 45.84 | 42.90 | 36.19 | 42.54 | ||||||||||||
1977 | 35.97 | 41.64 | 36.87 | 40.97 | 41.55 | 47.77 | 48.90 | 52.35 | 49.73 | 45.58 | 40.80 | 42.94 | 43.76 | |||||||||||||
1978 | 42.67 | a | 41.68 | 42.00 | 43.97 | 44.90 | a | 51.34 | a | 51.32 | 52.45 | 51.63 | 46.52 | 36.70 | 32.06 | 44.77 | ||||||||||
1979 | 32.23 | 39.64 | 41.65 | 42.40 | 45.97 | 46.03 | 52.71 | 53.10 | 54.33 | 50.00 | 41.00 | 41.17 | a | 45.02 | ||||||||||||
1980 | 34.45 | 41.31 | 38.71 | 40.66 | a | 44.39 | 48.83 | 50.71 | 48.06 | 49.83 | 46.19 | 44.10 | 41.19 | 44.04 | ||||||||||||
1981 | 41.19 | 39.79 | 40.13 | a | 42.57 | 45.26 | 50.40 | 50.32 | 53.26 | 49.73 | 44.97 | 42.87 | 41.29 | 45.15 | ||||||||||||
1982 | 35.58 | 37.50 | 37.52 | 37.79 | a | 42.37 | a | 48.43 | 51.03 | 51.06 | 50.03 | 46.94 | 40.27 | 38.20 | a | 43.06 | ||||||||||
1983 | 40.65 | 42.46 | 43.77 | 39.53 | 45.10 | 48.48 | a | 52.58 | 51.45 | 48.60 | 46.13 | 44.32 | b | 37.00 | a | 45.01 | ||||||||||
1984 | 38.10 | 39.41 | 42.03 | 40.33 | 44.03 | 46.70 | 47.68 | 51.26 | 49.13 | 45.39 | 41.24 | a | 34.32 | 43.30 | ||||||||||||
1985 | 33.87 | 34.46 | 35.39 | 41.37 | 43.32 | 46.73 | 51.06 | 50.84 | 46.23 | 43.23 | 35.07 | 33.29 | 41.24 | |||||||||||||
1986 | 41.23 | 41.25 | 41.84 | 39.07 | a | 43.81 | 48.90 | 49.33 | a | 50.23 | 46.67 | 46.27 | a | 42.43 | 37.84 | 44.07 | ||||||||||
1987 | 37.23 | 38.18 | 40.03 | 41.10 | 46.23 | a | 46.80 | 50.35 | 48.81 | 47.67 | c | 45.52 | 43.50 | 35.68 | 43.42 | |||||||||||
1988 | 36.81 | 37.83 | 37.13 | 41.37 | 44.19 | 46.73 | 48.84 | 47.81 | 47.07 | a | 49.39 | 43.71 | b | 38.26 | 43.26 | |||||||||||
1989 | 37.17 | b | 32.46 | 40.68 | c | 43.90 | 44.63 | a | 49.55 | a | 51.06 | 51.07 | c | 46.86 | a | 44.68 | 41.71 | b | 37.77 | 43.46 | ||||||
1990 | 39.77 | a | 36.44 | a | 40.93 | a | 43.21 | a | 44.24 | b | 49.25 | b | 51.86 | b | 53.81 | 53.00 | 44.39 | 42.76 | a | 31.83 | a | 44.29 | ||||
1991 | 34.76 | b | 43.21 | d | 37.48 | d | 40.77 | d | 43.54 | c | 47.00 | f | 49.77 | a | 52.72 | b | 49.73 | d | 44.59 | i | 42.30 | g | 39.34 | b | 43.48 | c |
1992 | 39.84 | f | 42.82 | a | 42.21 | b | 45.70 | c | 44.29 | g | 49.60 | j | 52.30 | a | 50.86 | c | 48.57 | g | 46.67 | a | 43.14 | a | 37.16 | f | 46.24 | e |
1993 | 35.00 | c | 35.81 | b | 42.23 | e | 43.74 | c | 48.48 | 50.60 | e | 49.07 | d | 51.28 | f | 48.03 | a | 47.70 | d | 35.81 | d | 37.33 | d | 43.07 | a | |
1994 | 39.57 | c | 37.57 | 39.14 | b | 43.68 | h | 45.54 | c | 47.00 | e | 48.63 | d | 52.43 | c | 51.52 | e | 43.70 | d | 36.95 | h | 36.83 | h | 45.01 | c | |
1995 | 42.55 | 41.08 | d | 40.11 | c | 41.40 | e | 45.67 | m | 48.57 | i | 51.67 | g | 50.64 | q | 52.17 | l | 44.72 | f | 45.46 | d | 42.08 | r | 42.12 | g | |
1996 | 39.08 | f | 40.05 | g | 38.83 | g | 44.09 | s | 45.17 | y | 47.24 | i | 50.57 | h | 47.93 | p | 48.78 | g | 44.96 | c | 41.70 | g | 39.04 | f | 44.96 | k |
1997 | 37.60 | f | 40.41 | f | 41.32 | f | 42.68 | e | 52.43 | j | 59.73 | s | 55.68 | l | 55.11 | l | 54.24 | i | 48.15 | d | 46.39 | l | 38.50 | k | 45.41 | j |
1998 | 42.58 | l | 40.91 | e | 38.41 | i | 39.04 | g | 45.88 | n | 54.48 | i | 61.50 | q | 54.64 | t | ----- | z | 44.07 | d | 41.59 | c | 35.91 | h | 42.19 | i |
1999 | 34.72 | f | 35.86 | n | 37.38 | e | 37.43 | p | 39.27 | p | 49.16 | e | 47.79 | b | 51.19 | j | 45.50 | j | 38.72 | f | 42.64 | h | 39.14 | i | 44.78 | i |
2000 | 33.09 | i | 40.57 | h | 34.32 | f | 35.29 | i | 44.79 | c | 45.09 | h | 43.69 | o | 43.44 | o | 46.15 | j | 42.25 | g | 37.15 | q | 36.38 | g | 44.79 | k |
2001 | 36.70 | d | 33.09 | f | 34.66 | b | 35.20 | e | 41.81 | j | 35.45 | j | 42.96 | g | 46.81 | j | 44.72 | l | 42.96 | e | 42.74 | c | 39.25 | c | 38.59 | f |
2002 | 35.08 | g | 22.40 | h | 34.27 | a | 39.81 | c | 42.44 | d | 47.37 | k | 51.50 | g | 49.26 | h | 48.00 | k | 43.08 | f | 42.96 | f | 41.92 | e | 39.61 | h |
2003 | 42.68 | i | 36.35 | e | 43.05 | j | 41.91 | g | 42.19 | e | 47.45 | h | 50.86 | i | 51.52 | j | 49.54 | f | 48.50 | k | 40.16 | e | 39.63 | d | 39.58 | h |
2004 | 41.33 | d | 38.85 | b | 40.13 | h | 41.73 | d | 47.55 | i | 50.95 | k | 53.50 | m | 55.64 | f | 50.80 | j | 48.20 | a | 40.04 | c | 40.21 | g | 42.03 | g |
2005 | 38.79 | g | 37.67 | g | 41.24 | j | 41.55 | h | 48.88 | f | 50.94 | l | 51.96 | h | 49.69 | b | 45.83 | 47.25 | k | 38.97 | a | 38.72 | b | 43.30 | h | |
2006 | 40.35 | 36.26 | a | 37.71 | c | 40.25 | j | ----- | z | 50.62 | a | ----- | z | 48.58 | e | 47.41 | c | 42.37 | a | 42.21 | b | 37.42 | e | 42.55 | c | |
2007 | 33.62 | e | 39.15 | a | 40.28 | b | 40.41 | a | 43.74 | d | 47.80 | e | 53.32 | f | 52.40 | f | 48.03 | 44.14 | b | 38.76 | a | 38.07 | a | 41.40 | b | |
2008 | 34.23 | 35.52 | h | 36.10 | a | 42.22 | g | 48.72 | b | 45.34 | a | 48.32 | 51.58 | 46.27 | d | 43.87 | 44.57 | 34.90 | 43.39 | b | ||||||
2009 | 36.03 | 36.50 | 37.58 | 39.03 | 43.68 | 51.97 | 50.84 | 51.81 | 50.07 | 46.16 | 41.17 | 34.39 | 43.27 | |||||||||||||
2010 | 43.77 | 40.36 | 38.77 | 39.93 | 43.42 | 47.67 | 48.19 | 50.45 | 51.87 | 45.68 | 41.30 | 40.29 | 44.31 | |||||||||||||
2011 | 38.16 | 35.21 | 40.71 | 39.00 | 43.26 | d | 48.73 | 50.81 | 50.68 | 50.50 | 47.06 | 39.03 | 33.48 | 43.05 | ||||||||||||
2012 | 36.33 | a | 38.07 | 36.61 | 42.07 | b | 42.68 | 47.73 | 50.71 | 50.03 | 47.07 | 45.97 | 43.97 | 38.33 | a | 43.30 | ||||||||||
2013 | 34.87 | 37.82 | 39.48 | 42.33 | 46.37 | a | 49.40 | 48.45 | 53.16 | 53.17 | 42.52 | 40.07 | 32.32 | 43.33 | ||||||||||||
2014 | 38.23 | 39.96 | 41.81 | 42.23 | 47.32 | 49.27 | 52.55 | 52.48 | 50.83 | 51.19 | 42.90 | 42.20 | a | 45.91 | ||||||||||||
2015 | 41.19 | 42.75 | 42.23 | a | 39.87 | 46.29 | 48.70 | 52.81 | 52.68 | 49.33 | 49.68 | 38.83 | 40.19 | 45.38 | ||||||||||||
2016 | 40.77 | 41.79 | 41.32 | 43.76 | a | 46.90 | 49.40 | 52.03 | 50.16 | 49.43 | 50.10 | 46.33 | 34.13 | 45.51 | ||||||||||||
2017 | 34.52 | 38.82 | 42.07 | b | 41.53 | 46.26 | d | 51.22 | c | 49.55 | 51.74 | 50.90 | 45.48 | 43.57 | 36.74 | 44.37 | ||||||||||
2018 | 42.03 | 35.93 | 36.68 | 42.10 | 47.00 | 48.48 | c | 51.73 | a | 52.71 | 48.77 | 46.68 | 42.10 | 39.45 | 44.47 | |||||||||||
2019 | 38.32 | 34.04 | 35.63 | a | 46.77 | 46.13 | a | 47.90 | a | 53.48 | 54.87 | 52.93 | 42.94 | 38.97 | 39.29 | 44.27 | ||||||||||
2020 | 42.13 | 36.17 | 36.58 | 42.17 | 47.00 | 49.80 | 50.52 | 51.42 | 53.10 | 46.90 | 40.64 | b | 38.68 | 44.59 | ||||||||||||
2021 | 39.48 | 39.00 | 36.16 | 39.53 | 45.13 | 51.23 | 50.71 | 51.16 | 49.97 | 45.32 | 44.54 | f | 35.00 | c | 43.88 | a | ||||||||||
2022 | 36.77 | a | 33.96 | a | 39.97 | 37.80 | 42.45 | 49.60 | 52.29 | 53.22 | d | 50.13 | 47.55 | 36.54 | b | 37.81 | 43.17 | |||||||||
2023 | 37.43 | a | 34.41 | a | 35.13 | 41.10 | 47.94 | 50.27 | 50.55 | 53.68 | 50.27 | 47.03 | 41.97 | 42.94 | 44.39 | |||||||||||
2024 | 42.58 | 41.59 | 39.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.23 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.96 | 38.50 | 38.94 | 40.91 | 44.67 | 48.48 | 50.40 | 51.34 | 49.42 | 45.80 | 41.36 | 37.76 | 43.84 | |||||||||||||
S.D. | 3.00 | 2.72 | 2.47 | 2.38 | 1.85 | 1.73 | 1.50 | 1.71 | 2.14 | 2.22 | 2.45 | 3.00 | 1.04 | |||||||||||||
SKEW | 0.15 | -0.16 | -0.05 | -0.07 | 0.41 | -0.04 | 0.11 | -0.30 | 0.28 | 0.35 | -0.59 | -0.23 | -0.11 | |||||||||||||
MAX | 43.77 | 43.21 | 43.77 | 46.77 | 48.72 | 51.97 | 53.48 | 54.87 | 54.33 | 51.19 | 46.33 | 42.94 | 45.91 | |||||||||||||
MIN | 32.23 | 32.46 | 34.27 | 35.20 | 41.55 | 44.59 | 47.68 | 47.81 | 45.83 | 41.97 | 35.07 | 31.83 | 41.24 | |||||||||||||
YRS | 44 | 45 | 46 | 43 | 42 | 41 | 41 | 41 | 42 | 46 | 45 | 44 | 33 |