YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.62 | a | 76.32 | 76.77 | 70.52 | 67.18 | 51.75 | 46.32 | 66.78 | e | ||||||
1951 | 40.63 | 43.21 | 49.87 | 57.40 | 69.39 | 77.43 | 83.39 | 78.85 | 74.93 | 62.89 | 46.95 | 40.77 | 60.48 | |||||||||||||
1952 | 43.90 | 43.36 | 45.74 | 58.38 | 68.27 | 79.12 | 78.76 | 80.32 | 72.37 | 63.26 | 45.30 | 39.44 | 59.85 | |||||||||||||
1953 | 46.53 | 43.52 | 53.08 | 59.48 | 64.19 | 79.43 | 80.06 | 78.29 | 73.45 | 60.71 | 50.05 | 34.63 | 60.29 | |||||||||||||
1954 | 41.90 | 49.73 | 50.16 | 64.68 | 68.82 | 77.13 | 80.79 | 76.23 | 74.03 | 63.81 | 51.70 | 40.68 | 61.64 | |||||||||||||
1955 | 37.52 | 39.70 | 50.79 | 58.80 | 65.95 | 75.28 | 76.79 | 77.05 | 73.65 | 63.02 | 49.47 | 44.02 | 59.34 | |||||||||||||
1956 | 45.37 | 39.48 | 52.40 | 57.58 | 70.63 | 80.35 | 78.11 | 76.37 | 74.47 | 61.89 | 43.82 | 39.61 | 60.01 | |||||||||||||
1957 | 44.79 | 53.18 | 51.73 | 57.83 | 64.63 | 77.73 | 80.53 | 75.00 | 70.63 | 57.90 | a | 44.67 | 42.31 | 60.08 | ||||||||||||
1958 | 39.16 | 48.07 | 45.92 | 57.33 | 68.79 | 79.37 | 80.00 | 79.35 | 70.02 | 58.87 | 49.24 | a | 44.79 | 60.08 | ||||||||||||
1959 | 42.26 | 44.14 | 49.90 | 60.95 | 67.92 | 78.85 | 79.71 | 76.50 | 73.20 | 61.50 | 46.75 | 41.74 | 60.29 | |||||||||||||
1960 | 37.37 | 40.66 | 54.45 | 60.43 | 67.29 | 78.70 | 77.32 | 78.71 | 72.48 | 58.97 | 50.22 | 31.87 | 59.04 | |||||||||||||
1961 | 37.21 | 45.61 | 50.82 | 59.28 | 68.34 | 77.42 | 78.76 | 76.73 | 68.00 | 60.66 | 44.07 | 41.79 | 59.06 | |||||||||||||
1962 | 37.77 | 49.61 | 46.35 | 62.12 | 69.02 | g | 75.20 | 76.03 | 78.95 | 70.83 | 62.16 | 52.40 | 42.44 | 59.44 | a | |||||||||||
1963 | 37.23 | 46.89 | 51.40 | 60.77 | 70.87 | 76.12 | 81.19 | 75.89 | 72.22 | 64.47 | 50.67 | 40.08 | 60.65 | |||||||||||||
1964 | 35.81 | 36.62 | 48.45 | 57.52 | 68.61 | 76.20 | 79.34 | 77.94 | 70.77 | 62.10 | 48.70 | 40.68 | 58.56 | |||||||||||||
1965 | 43.27 | 42.36 | 47.37 | 59.40 | 66.13 | 73.25 | 79.85 | 76.84 | 69.37 | 61.82 | 53.38 | 42.02 | 59.59 | |||||||||||||
1966 | 35.13 | 39.54 | 52.26 | 60.17 | 69.81 | 75.72 | 81.45 | 76.06 | 70.55 | 59.77 | 52.00 | 40.44 | 59.41 | |||||||||||||
1967 | 40.39 | 46.11 | 56.42 | 60.77 | 66.24 | 73.88 | 79.90 | 74.21 | 68.70 | 61.21 | 50.70 | 35.95 | 59.54 | |||||||||||||
1968 | 40.13 | 46.69 | 49.26 | 55.67 | 67.02 | 76.77 | 77.02 | 73.85 | 69.41 | a | 62.42 | 47.68 | 37.97 | 58.66 | ||||||||||||
1969 | 45.24 | 43.79 | 46.15 | 61.95 | 68.05 | 76.32 | 79.56 | 79.79 | 71.10 | 60.24 | 47.80 | 42.95 | 60.24 | |||||||||||||
1970 | 40.37 | 46.23 | 47.82 | 56.05 | 68.29 | 74.53 | 79.39 | 77.82 | 69.92 | 55.05 | 49.40 | 43.27 | 59.01 | |||||||||||||
1971 | 41.69 | 44.91 | 53.29 | 56.73 | 65.16 | 76.55 | 79.60 | 74.39 | 69.83 | 57.66 | 48.17 | 39.05 | 58.92 | |||||||||||||
1972 | 42.26 | 47.52 | 58.42 | 61.17 | 66.31 | 74.63 | 78.65 | 73.94 | 69.35 | 60.68 | 43.63 | 40.00 | 59.71 | |||||||||||||
1973 | 36.71 | 41.50 | 47.53 | 53.90 | 65.63 | 75.10 | 76.69 | 76.60 | 72.08 | 62.13 | 52.52 | 41.82 | 58.52 | |||||||||||||
1974 | 40.32 | 41.80 | 56.68 | 59.03 | 70.69 | 79.40 | 76.32 | 73.94 | 68.17 | 58.68 | 47.88 | 36.85 | 59.15 | |||||||||||||
1975 | 37.55 | 43.50 | 48.76 | 54.37 | 63.76 | 76.28 | 76.74 | 76.89 | 67.45 | 59.77 | 48.63 | 40.66 | 57.86 | |||||||||||||
1976 | 39.27 | 49.02 | 50.19 | 58.70 | 66.16 | 75.95 | 76.58 | 76.11 | 68.10 | 54.77 | 43.82 | 38.08 | 58.06 | |||||||||||||
1977 | 38.42 | 45.11 | 47.42 | 58.22 | 66.98 | 78.28 | 80.10 | 80.52 | 74.28 | 63.16 | 52.98 | 47.37 | 61.07 | |||||||||||||
1978 | 43.53 | 44.98 | 54.98 | 62.58 | 68.23 | 80.43 | 81.60 | 77.02 | 69.68 | 62.24 | 51.20 | 39.97 | 61.37 | |||||||||||||
1979 | 38.97 | 45.80 | 52.97 | 61.07 | 66.40 | 75.17 | 81.24 | 75.52 | 71.68 | 65.42 | 45.67 | 42.48 | 60.20 | |||||||||||||
1980 | 45.73 | 49.05 | 50.44 | 57.72 | 66.44 | 81.55 | 83.45 | 78.02 | 72.38 | 58.86 | c | 48.47 | 45.55 | 61.47 | ||||||||||||
1981 | 42.84 | 48.32 | 49.79 | 61.40 | 68.16 | 79.78 | 80.11 | 76.56 | 72.10 | 61.55 | 53.97 | 46.31 | 61.74 | |||||||||||||
1982 | 43.35 | 46.38 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.87 | j | |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.16 | o | ----- | z |
1990 | 41.39 | m | 44.11 | n | 51.61 | m | 59.25 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.18 | 50.23 | 42.60 | 51.00 | i | |||
1997 | 44.14 | b | 44.00 | 54.82 | 57.20 | 70.21 | 76.20 | 78.57 | d | 78.39 | 74.22 | 60.29 | 48.75 | 36.71 | 60.29 | |||||||||||
1998 | 43.39 | 44.09 | 50.63 | 55.28 | 69.87 | 78.28 | 79.45 | 77.50 | 75.95 | 61.35 | 51.37 | 42.85 | 60.84 | |||||||||||||
1999 | 45.53 | 49.29 | 54.21 | 57.52 | 68.79 | 76.17 | 77.53 | 76.10 | 71.13 | 61.10 | a | 53.41 | a | 39.13 | 60.83 | |||||||||||
2000 | 45.55 | a | 50.11 | a | 51.97 | 63.40 | 75.77 | c | 76.53 | 80.61 | 78.13 | 74.97 | 59.70 | a | 42.45 | 41.31 | 61.71 | |||||||||
2001 | 37.31 | 45.48 | 52.00 | a | 60.65 | 71.16 | 78.87 | 80.00 | 77.00 | 72.08 | 63.53 | 50.47 | 39.23 | 60.65 | ||||||||||||
2002 | 41.47 | 43.71 | 51.68 | 66.32 | 70.71 | 81.82 | 78.87 | 79.75 | a | 71.33 | 59.69 | 48.48 | 40.08 | 61.16 | ||||||||||||
2003 | 46.79 | 46.11 | 52.19 | 60.28 | 71.69 | 76.87 | 83.73 | a | 79.93 | b | 73.60 | 65.60 | 49.80 | 41.47 | 62.34 | |||||||||||
2004 | 42.60 | 41.43 | 56.63 | 58.52 | 71.58 | 77.62 | 80.39 | 75.53 | 70.05 | 60.43 | a | 46.27 | 40.44 | 60.12 | ||||||||||||
2005 | 45.65 | e | 45.68 | 50.89 | 59.00 | 70.34 | 78.82 | 82.68 | 77.35 | a | 74.12 | 61.27 | 51.72 | 44.29 | 61.82 | |||||||||||
2006 | 43.87 | 48.32 | 52.29 | 63.75 | 73.76 | 79.63 | 80.05 | 74.95 | 66.80 | 59.39 | 51.40 | 39.68 | 61.16 | |||||||||||||
2007 | 37.29 | 47.00 | 54.52 | 59.88 | 66.63 | 78.18 | 79.50 | 79.73 | 72.53 | 63.18 | 52.79 | a | 40.21 | c | 60.95 | |||||||||||
2008 | 39.40 | 47.81 | 53.34 | 59.68 | 68.24 | 80.25 | 76.86 | b | 76.06 | 68.58 | 61.27 | 50.35 | 43.18 | 60.42 | ||||||||||||
2009 | 44.06 | 48.59 | 54.65 | 59.90 | 71.94 | 75.58 | 81.90 | a | 78.60 | 69.97 | 60.34 | 50.37 | 38.50 | a | 61.20 | |||||||||||
2010 | 39.50 | c | 43.57 | 49.39 | 59.45 | 68.56 | 80.60 | 79.68 | 78.79 | 75.30 | 63.90 | 48.57 | 46.23 | 61.13 | ||||||||||||
2011 | 40.16 | 41.41 | a | 58.69 | 64.92 | 68.03 | 80.98 | 83.27 | 82.39 | 73.70 | 62.58 | 49.02 | 35.27 | 61.70 | ||||||||||||
2012 | 44.44 | 45.39 | a | 54.66 | 64.32 | 70.47 | 82.37 | 80.50 | 80.39 | 72.43 | 65.15 | 53.35 | 42.44 | 62.99 | ||||||||||||
2013 | 38.13 | 43.23 | 55.56 | 62.28 | 69.87 | 82.40 | 78.39 | 78.16 | 71.25 | 60.06 | 48.23 | 40.56 | 60.68 | |||||||||||||
2014 | 43.56 | 52.61 | 54.63 | 60.67 | 68.27 | 82.83 | 80.95 | 75.95 | 72.63 | 64.58 | 49.20 | 43.75 | a | 62.47 | ||||||||||||
2015 | 41.16 | 51.04 | a | 55.95 | 59.80 | 66.84 | 79.75 | 79.76 | 81.08 | 75.22 | 63.94 | 50.05 | 41.40 | 62.17 | ||||||||||||
2016 | 41.13 | 49.71 | 57.68 | 60.58 | 67.31 | 80.95 | 84.53 | 76.13 | a | 72.65 | 67.44 | 52.09 | a | 44.71 | 62.91 | |||||||||||
2017 | 43.55 | 51.43 | 59.40 | 62.73 | 68.87 | a | 81.57 | 81.42 | 78.55 | 74.85 | 65.19 | 58.48 | d | 45.31 | d | 64.28 | ||||||||||
2018 | 44.83 | b | 51.32 | 56.69 | 65.80 | 74.98 | 83.69 | a | 81.79 | b | 81.10 | 74.45 | 60.94 | 49.33 | 42.65 | 63.96 | ||||||||||
2019 | 42.89 | 46.18 | 55.58 | 63.38 | 67.23 | 78.90 | 84.13 | 83.32 | 76.15 | 61.35 | 49.48 | 43.02 | 62.63 | |||||||||||||
2020 | 44.48 | 47.33 | 55.82 | 64.88 | 75.06 | 80.08 | 85.29 | b | 84.35 | 72.77 | 66.31 | 55.08 | 41.82 | 64.44 | ||||||||||||
2021 | 42.81 | 47.96 | 52.58 | 62.87 | 71.56 | 81.71 | a | 79.11 | d | 78.16 | 74.68 | 62.29 | e | 54.75 | 47.85 | 63.03 | ||||||||||
2022 | 42.50 | 43.25 | 52.44 | 65.84 | a | 73.97 | 80.62 | b | 82.97 | 77.98 | 73.10 | 59.37 | 46.92 | 43.79 | 61.90 | |||||||||||
2023 | 42.24 | 44.37 | a | 52.68 | 60.53 | 69.82 | 78.65 | 86.89 | 81.34 | 75.97 | 64.47 | 51.85 | 43.65 | 62.70 | ||||||||||||
2024 | 43.63 | 48.78 | 53.39 | 57.82 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.60 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.58 | 45.76 | 52.30 | 60.19 | 68.85 | 78.31 | 80.07 | 77.76 | 71.97 | 61.66 | 49.63 | 41.40 | 60.78 | |||||||||||||
S.D. | 3.01 | 3.48 | 3.38 | 2.89 | 2.68 | 2.46 | 2.39 | 2.30 | 2.36 | 2.57 | 3.13 | 3.12 | 1.52 | |||||||||||||
SKEW | -0.28 | -0.14 | -0.03 | 0.14 | 0.59 | 0.08 | 0.49 | 0.58 | -0.18 | -0.11 | -0.07 | -0.44 | 0.36 | |||||||||||||
MAX | 46.79 | 53.18 | 59.40 | 66.32 | 75.77 | 83.69 | 86.89 | 84.35 | 76.15 | 67.44 | 58.48 | 47.85 | 64.44 | |||||||||||||
MIN | 35.13 | 36.62 | 45.74 | 53.90 | 63.76 | 73.25 | 76.03 | 73.85 | 66.80 | 54.77 | 42.45 | 31.87 | 57.86 | |||||||||||||
YRS | 60 | 60 | 59 | 58 | 57 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 57 |