YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.79 | m | 54.50 | 44.17 | 42.40 | 47.02 | i | |||
1956 | 42.18 | 36.62 | 43.48 | 50.63 | 56.97 | 58.95 | 68.00 | 65.77 | 63.07 | 52.37 | 44.20 | 42.15 | a | 52.03 | ||||||||||||
1957 | 33.74 | 42.91 | 46.13 | 51.80 | 57.84 | 62.18 | 64.77 | 64.21 | 66.09 | a | 53.94 | 46.13 | 44.02 | 52.81 | ||||||||||||
1958 | 43.34 | 49.68 | 45.74 | 50.17 | 60.65 | 62.55 | 71.00 | 70.40 | 62.48 | 57.13 | 47.45 | a | 47.61 | 55.68 | ||||||||||||
1959 | 44.79 | 42.30 | 46.47 | 52.22 | 53.34 | 61.66 | a | 68.52 | a | 66.71 | 60.02 | 55.97 | 47.24 | a | 42.26 | 53.46 | ||||||||||
1960 | 40.26 | 43.66 | 47.69 | 50.73 | 53.94 | 62.47 | 69.55 | 65.03 | 62.32 | 55.25 | a | 47.13 | 41.56 | 53.30 | ||||||||||||
1961 | 44.57 | a | 46.95 | 46.28 | a | 50.67 | 55.02 | 64.25 | 67.90 | 70.03 | 59.63 | 53.65 | 43.50 | 42.03 | 53.71 | |||||||||||
1962 | 39.05 | a | 43.25 | 44.18 | 52.65 | 51.90 | 60.87 | 66.47 | 65.42 | 63.50 | 53.92 | 49.00 | 43.76 | 52.83 | ||||||||||||
1963 | 35.73 | 50.57 | 46.85 | 47.58 | 55.82 | 59.67 | 62.52 | 65.92 | 66.02 | 55.71 | 47.95 | ----- | z | 54.03 | a | |||||||||||
1964 | 42.40 | 42.90 | 44.31 | 47.55 | 52.58 | 58.77 | 65.39 | 64.69 | 60.18 | 55.77 | 44.08 | 42.45 | 51.76 | |||||||||||||
1965 | 41.24 | 44.48 | 48.42 | 51.60 | 53.45 | 60.23 | 67.85 | 67.23 | 61.45 | 57.97 | 50.67 | 40.95 | 53.80 | |||||||||||||
1966 | 41.58 | 43.38 | 46.68 | 53.05 | 56.56 | 61.75 | 65.32 | 66.60 | 63.72 | 54.77 | 48.33 | 45.05 | 53.90 | |||||||||||||
1967 | 43.87 | 44.39 | 44.69 | 46.58 | 56.21 | 63.88 | 68.35 | 72.05 | 65.97 | 55.42 | 48.05 | 40.77 | 54.19 | |||||||||||||
1968 | 41.69 | 48.36 | 49.23 | 49.63 | 54.94 | 61.93 | 67.63 | 65.10 | 62.33 | 53.50 | 48.52 | 41.48 | 53.70 | |||||||||||||
1969 | 37.45 | 41.04 | 47.45 | 50.57 | a | 58.55 | 61.87 | 65.00 | a | 64.37 | 61.80 | 52.80 | a | 47.13 | 44.73 | a | 52.73 | |||||||||
1970 | 43.69 | 47.09 | 47.43 | b | 46.53 | 55.45 | 63.88 | 68.02 | 66.21 | 59.42 | 53.34 | 48.00 | 41.24 | 53.36 | ||||||||||||
1971 | 39.57 | a | 42.98 | 43.48 | 48.60 | 54.65 | 57.70 | 67.06 | 68.94 | 60.27 | 51.69 | 45.32 | 40.18 | 51.70 | ||||||||||||
1972 | 39.15 | 43.83 | 48.85 | 47.48 | 56.55 | 61.07 | 69.39 | 69.05 | 59.98 | 53.45 | 48.42 | 37.90 | 52.93 | |||||||||||||
1973 | 39.84 | 46.04 | 44.92 | a | 51.53 | 58.05 | 62.45 | 67.79 | 65.05 | 63.12 | 54.26 | 44.45 | 45.15 | 53.55 | ||||||||||||
1974 | 37.79 | 41.57 | 44.46 | f | 49.14 | a | 53.60 | 61.25 | 65.60 | 68.15 | 66.88 | 55.19 | 47.76 | a | 44.16 | 53.74 | a | |||||||||
1975 | 43.39 | 42.84 | 43.90 | 45.95 | a | 56.30 | a | 59.25 | 66.68 | 64.15 | 63.63 | 53.65 | 45.57 | 43.21 | 52.38 | |||||||||||
1976 | 42.02 | a | 42.19 | 44.37 | 48.18 | 55.20 | a | 57.25 | 66.17 | a | 64.26 | 62.76 | c | 55.44 | 48.40 | 40.06 | 52.19 | |||||||||
1977 | 39.37 | 46.38 | 44.35 | 51.48 | 51.45 | 61.72 | 64.03 | 70.26 | 59.28 | 53.48 | 45.33 | a | 45.28 | a | 52.70 | |||||||||||
1978 | 44.66 | 46.41 | a | 50.13 | 49.28 | 53.90 | 63.33 | 66.03 | 65.74 | 59.52 | 55.40 | 41.82 | 37.23 | 52.79 | ||||||||||||
1979 | 32.26 | 41.62 | 48.85 | 49.98 | 56.15 | 61.55 | 67.44 | 64.95 | 64.22 | 57.53 | a | 45.84 | a | 45.58 | a | 53.00 | ||||||||||
1980 | 38.00 | 45.26 | b | 45.40 | 51.90 | 54.05 | a | 58.03 | a | 66.60 | a | 64.03 | a | 61.57 | 56.38 | a | 48.72 | 45.12 | a | 52.92 | ||||||
1981 | 42.73 | a | 44.61 | 47.73 | 50.23 | 54.76 | 60.13 | 65.03 | a | 68.97 | 62.90 | a | 53.02 | 48.52 | b | 44.26 | 53.57 | |||||||||
1982 | 38.63 | 42.73 | 45.50 | a | 47.87 | 54.74 | b | 61.83 | 63.77 | a | 65.53 | 61.18 | 54.84 | 44.22 | a | 40.64 | b | 51.79 | ||||||||
1983 | 44.19 | 46.48 | 48.98 | 50.20 | 56.23 | a | 58.75 | 62.90 | 66.50 | 60.02 | 54.77 | 48.57 | 39.00 | a | 53.05 | |||||||||||
1984 | 42.18 | 44.87 | b | 49.57 | a | 47.93 | 53.87 | 57.93 | 66.37 | 66.87 | 61.25 | 51.82 | 46.11 | b | 38.47 | 52.27 | ||||||||||
1985 | 36.11 | 41.15 | b | 43.15 | 52.05 | 55.52 | a | 62.03 | 70.27 | 65.73 | 58.48 | 53.15 | a | 39.18 | 35.39 | 51.02 | ||||||||||
1986 | 44.57 | a | 44.80 | 50.90 | 49.02 | 55.33 | b | 64.35 | 63.48 | 70.42 | 59.10 | 56.58 | 47.45 | 41.82 | 53.99 | |||||||||||
1987 | 41.02 | 45.91 | 48.79 | 54.77 | 58.98 | a | 63.43 | 64.22 | b | 66.94 | 63.37 | 57.82 | 48.55 | a | 40.60 | 54.53 | ||||||||||
1988 | 40.69 | b | 44.21 | a | 47.72 | a | 51.28 | 53.79 | 59.98 | 67.38 | a | 66.40 | 62.60 | 58.45 | 47.82 | 41.16 | 53.46 | |||||||||
1989 | 41.53 | a | 36.52 | 46.61 | 54.62 | 55.42 | 62.20 | 63.74 | 64.42 | 64.58 | 54.72 | a | 48.07 | 40.10 | a | 52.71 | ||||||||||
1990 | 42.85 | 40.86 | 49.15 | a | 53.72 | 54.90 | 60.33 | 69.50 | 67.95 | a | 64.40 | a | 54.05 | 46.79 | a | 34.50 | 53.25 | |||||||||
1991 | 39.20 | a | 48.94 | a | 45.32 | 49.28 | 52.10 | 57.78 | a | 68.02 | 67.90 | a | 65.02 | 55.63 | a | 49.05 | 42.48 | 53.39 | ||||||||
1992 | 44.78 | a | 49.21 | 51.74 | 54.72 | 60.98 | 65.10 | 67.59 | b | 68.79 | 63.23 | 56.77 | 46.66 | a | 40.47 | a | 55.84 | |||||||||
1993 | 37.13 | 40.80 | a | 49.26 | 50.63 | 58.00 | 59.40 | 61.90 | a | 65.42 | 64.12 | 58.03 | a | 41.48 | 40.34 | 52.21 | ||||||||||
1994 | 43.17 | b | 41.87 | a | 49.40 | 51.98 | a | 57.83 | a | 59.43 | a | 68.08 | g | 67.00 | g | 66.34 | a | 54.43 | c | 41.55 | a | 42.08 | 50.81 | b | ||
1995 | 44.39 | 48.74 | a | 48.21 | 50.52 | 56.84 | 60.21 | b | 67.87 | 64.93 | a | 65.76 | a | 54.27 | a | 50.60 | 44.37 | 54.73 | ||||||||
1996 | 42.92 | a | 43.90 | 49.06 | 52.73 | 53.82 | 60.65 | 70.31 | 68.61 | 61.50 | 54.50 | 47.63 | 43.70 | a | 54.11 | |||||||||||
1997 | 41.72 | b | 43.95 | 47.62 | b | 50.90 | 60.79 | 61.02 | a | 67.15 | 68.82 | 64.75 | b | 53.82 | a | 50.48 | 40.71 | b | 54.31 | |||||||
1998 | 45.60 | 47.11 | a | 48.28 | b | 51.15 | 53.73 | 61.15 | 69.66 | 68.47 | 65.83 | a | 55.06 | 47.98 | 39.89 | 54.49 | ||||||||||
1999 | 42.60 | a | 43.93 | 44.84 | 49.50 | 52.74 | 59.65 | 65.24 | 66.90 | 63.72 | a | 55.36 | b | 50.75 | 41.13 | 53.03 | ||||||||||
2000 | 40.38 | b | 44.75 | a | 45.11 | 52.74 | a | 55.63 | 63.05 | 65.60 | 65.94 | 63.23 | 54.40 | 43.03 | 42.19 | 53.00 | ||||||||||
2001 | 42.39 | 42.30 | 47.65 | 48.37 | 57.50 | 59.07 | 66.47 | 67.45 | 64.13 | 54.10 | b | 49.13 | 42.26 | 53.40 | ||||||||||||
2002 | 41.76 | 44.66 | 44.37 | 50.40 | 53.42 | 61.22 | 67.95 | 66.02 | 63.67 | 53.43 | a | 48.33 | 44.62 | a | 53.32 | |||||||||||
2003 | 46.18 | a | 44.41 | a | 49.23 | 48.70 | 55.19 | 63.28 | 68.77 | a | 67.61 | c | 64.93 | 57.48 | a | 42.93 | c | 43.00 | 54.31 | |||||||
2004 | 42.42 | 43.48 | 49.05 | 51.68 | b | 55.66 | 61.88 | b | 69.33 | a | 68.65 | a | 60.22 | 56.90 | p | 45.34 | e | 42.66 | 53.67 | a | ||||||
2005 | 43.34 | b | 43.38 | d | 50.37 | 50.62 | 57.39 | 59.02 | a | 68.26 | 68.32 | a | 61.74 | i | 56.41 | b | 44.33 | a | 41.78 | a | 53.02 | a | ||||
2006 | 44.47 | a | 43.87 | a | 45.07 | b | 51.40 | 56.08 | e | 61.24 | e | 67.79 | c | 65.19 | b | 62.77 | b | 54.03 | 47.13 | d | 42.54 | c | 53.46 | |||
2007 | 38.69 | 44.94 | c | 49.02 | c | 50.50 | 54.81 | b | 60.15 | f | 68.17 | e | 65.87 | a | 61.48 | c | 51.92 | f | 45.42 | 41.00 | b | 51.99 | b | |||
2008 | 38.27 | a | 43.05 | a | 43.86 | c | 46.98 | a | 55.41 | c | 57.95 | b | 66.85 | d | 66.30 | a | 61.35 | f | 53.73 | 49.59 | a | 39.52 | b | 51.05 | a | |
2009 | 39.28 | a | 43.29 | b | 43.68 | 48.79 | d | 56.57 | c | 61.31 | f | 69.66 | 66.32 | 63.22 | a | 53.35 | 46.78 | a | 37.15 | 51.64 | a | |||||
2010 | 47.20 | a | 47.52 | 46.75 | c | 48.81 | a | 52.27 | 58.47 | a | 65.94 | d | 66.25 | a | 62.40 | 54.87 | 46.12 | a | 43.18 | c | 53.32 | |||||
2011 | 42.87 | 40.94 | a | 45.85 | 46.57 | 50.68 | c | 58.27 | 64.10 | a | 66.42 | 65.57 | 55.03 | 46.05 | a | 39.12 | a | 51.79 | ||||||||
2012 | 42.18 | a | 43.74 | 43.58 | a | 50.95 | 53.95 | 58.89 | c | 65.00 | 68.23 | 62.82 | 55.22 | a | 48.92 | 42.08 | 52.96 | |||||||||
2013 | 37.21 | 42.45 | 48.19 | 52.28 | 57.48 | a | 62.90 | a | 69.26 | 67.73 | 62.04 | c | 52.74 | 46.28 | 36.10 | 52.89 | ||||||||||
2014 | 40.94 | 43.16 | 49.32 | 51.70 | 58.45 | 60.92 | 69.95 | 69.94 | 65.42 | 59.87 | 47.90 | 46.16 | 55.31 | |||||||||||||
2015 | 44.31 | 48.59 | 52.63 | 50.40 | 57.71 | 67.05 | 70.66 | 69.34 | 61.98 | 59.82 | 45.45 | 43.44 | 55.95 | |||||||||||||
2016 | 44.16 | 48.19 | 48.24 | 55.50 | 57.40 | 62.68 | 66.00 | 69.71 | 62.55 | 55.27 | 52.08 | 38.83 | a | 55.05 | ||||||||||||
2017 | 38.52 | 43.46 | 47.00 | 49.47 | 56.37 | 61.22 | 66.87 | 69.76 | 64.85 | 53.58 | a | 47.22 | 38.34 | 53.05 | ||||||||||||
2018 | 43.21 | 42.11 | 45.13 | 50.57 | 56.76 | 60.65 | 68.45 | 68.26 | 61.67 | 56.26 | 46.60 | 43.02 | 53.56 | |||||||||||||
2019 | 42.50 | b | 38.71 | b | 45.45 | a | 52.15 | 57.69 | 62.32 | 66.29 | 68.21 | 62.85 | 51.65 | 46.47 | 43.73 | 53.17 | ||||||||||
2020 | 45.00 | 43.79 | 45.97 | 52.68 | 57.48 | 61.68 | 66.98 | 67.79 | 65.30 | 57.06 | 46.58 | 43.74 | 54.51 | |||||||||||||
2021 | 44.71 | 43.02 | 45.71 | 52.55 | 56.81 | 66.65 | 69.85 | 69.15 | 64.25 | 54.40 | 49.83 | 41.85 | 54.90 | |||||||||||||
2022 | 42.44 | 43.25 | 49.16 | 47.75 | 53.79 | 61.50 | 70.21 | 71.44 | 65.22 | 59.58 | 43.62 | 40.63 | 54.05 | |||||||||||||
2023 | 42.66 | 41.45 | 42.76 | 48.22 | 59.71 | 62.52 | 69.48 | 71.47 | 63.18 | 56.16 | 46.88 | 46.29 | 54.23 | |||||||||||||
2024 | 43.39 | 46.71 | 47.42 | 50.07 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.84 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.54 | 44.09 | 46.94 | 50.42 | 55.70 | 61.16 | 67.10 | 67.24 | 62.90 | 55.05 | 46.76 | 41.77 | 53.42 | |||||||||||||
S.D. | 2.94 | 2.77 | 2.28 | 2.15 | 2.22 | 2.11 | 2.15 | 2.02 | 2.06 | 1.87 | 2.44 | 2.63 | 1.04 | |||||||||||||
SKEW | -0.81 | -0.03 | 0.14 | 0.06 | 0.18 | 0.37 | -0.32 | 0.35 | -0.18 | 0.65 | -0.60 | -0.44 | 0.32 | |||||||||||||
MAX | 47.20 | 50.57 | 52.63 | 55.50 | 60.98 | 67.05 | 71.00 | 72.05 | 66.88 | 59.87 | 52.08 | 47.61 | 55.95 | |||||||||||||
MIN | 32.26 | 36.52 | 42.76 | 45.95 | 50.68 | 57.25 | 61.90 | 64.03 | 58.48 | 51.65 | 39.18 | 34.50 | 51.02 | |||||||||||||
YRS | 69 | 69 | 68 | 68 | 68 | 66 | 67 | 67 | 66 | 67 | 69 | 68 | 60 |