YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.17 | 68.71 | 50.92 | f | 43.10 | 59.99 | i | |||
1951 | 37.84 | 40.43 | 46.97 | 53.80 | 65.81 | 74.73 | 85.06 | 78.13 | 75.17 | 60.00 | 42.50 | 34.71 | 57.93 | |||||||||||||
1952 | 32.94 | 35.72 | 41.32 | 56.10 | 65.03 | 79.70 | 80.55 | 78.10 | 72.40 | 65.20 | a | 40.03 | 30.94 | 56.50 | ||||||||||||
1953 | 40.65 | 38.61 | 49.19 | 53.43 | 60.00 | 78.60 | 80.10 | 78.39 | 75.38 | a | 60.74 | 43.33 | 30.70 | a | 57.43 | |||||||||||
1954 | 36.40 | a | 48.54 | 45.68 | 63.60 | 67.26 | 78.60 | 81.87 | 78.26 | 74.21 | a | 64.10 | 50.10 | a | 36.53 | a | 60.43 | |||||||||
1955 | 33.30 | a | 35.57 | 47.73 | a | 55.53 | 64.06 | 74.34 | a | 80.97 | 78.87 | 74.83 | 63.97 | 47.93 | a | 41.94 | 58.25 | |||||||||
1956 | 41.06 | 37.04 | b | 49.32 | 54.47 | 68.71 | 78.27 | 79.16 | 75.03 | 75.30 | 59.93 | a | 42.07 | 38.23 | 58.22 | |||||||||||
1957 | 34.29 | 47.50 | 46.52 | 51.87 | 59.65 | 74.73 | 77.32 | 74.65 | 72.07 | 57.19 | 38.83 | 38.84 | 56.12 | |||||||||||||
1958 | 36.06 | 42.25 | 41.26 | 53.33 | 69.29 | 79.83 | 81.87 | 80.45 | 72.57 | 60.94 | 46.70 | 42.45 | 58.92 | |||||||||||||
1959 | 37.19 | 37.75 | 46.06 | 55.80 | 65.48 | 78.37 | 79.93 | c | 76.48 | 70.79 | b | 56.87 | 46.13 | 39.32 | 57.52 | |||||||||||
1960 | 30.06 | 31.07 | 47.48 | 58.50 | 65.52 | 78.30 | 80.10 | 82.26 | 74.57 | 59.13 | 48.17 | 35.13 | 57.52 | |||||||||||||
1961 | 36.48 | 41.37 | a | 45.87 | 54.62 | a | 68.23 | 78.77 | 80.39 | 76.39 | 67.90 | 60.26 | 41.40 | 30.97 | 56.89 | |||||||||||
1962 | 33.39 | 41.57 | 42.52 | 60.53 | 69.52 | 75.73 | 80.00 | 81.45 | 71.53 | 64.27 | a | 50.10 | 42.42 | 59.42 | ||||||||||||
1963 | 32.03 | 41.68 | 47.00 | 59.77 | 71.03 | 78.43 | 83.68 | 77.33 | d | 75.00 | 67.00 | 48.40 | 37.77 | 59.93 | ||||||||||||
1964 | 33.26 | 32.03 | 40.71 | 54.57 | 67.52 | 75.70 | 81.84 | 76.94 | 70.14 | a | 63.33 | a | 43.90 | a | 30.77 | a | 55.89 | |||||||||
1965 | 34.74 | 36.54 | 39.81 | 55.76 | a | 64.55 | 71.83 | a | 80.23 | 76.90 | 67.17 | 63.68 | 49.60 | 38.84 | 56.64 | |||||||||||
1966 | 31.13 | 31.50 | 50.23 | 58.60 | 71.13 | 75.69 | a | 83.10 | 77.84 | 73.97 | 61.58 | 49.90 | 37.65 | 58.53 | ||||||||||||
1967 | 37.23 | 41.00 | 53.74 | 58.03 | 65.42 | 72.46 | b | 79.29 | 74.19 | 69.07 | 63.61 | 49.80 | 30.71 | 57.88 | ||||||||||||
1968 | 31.74 | 37.66 | 46.55 | 51.83 | 63.97 | a | 78.59 | a | 79.00 | 73.42 | 70.10 | a | 62.16 | 43.30 | 35.23 | 56.13 | ||||||||||
1969 | 40.19 | 39.14 | 41.03 | 59.80 | 68.71 | 71.63 | 79.32 | 80.70 | a | 70.30 | 51.19 | 45.67 | 36.87 | a | 57.05 | |||||||||||
1970 | 34.81 | 44.39 | 42.81 | 51.53 | 67.87 | 73.47 | 80.74 | 78.65 | 68.80 | 54.58 | 48.17 | 40.55 | 57.20 | |||||||||||||
1971 | 38.55 | 40.71 | 49.66 | b | 56.77 | 65.17 | a | 78.07 | 80.32 | 77.13 | a | 69.17 | 58.35 | 44.03 | 32.97 | 57.57 | ||||||||||
1972 | 36.29 | 43.45 | 54.84 | 61.30 | 67.53 | a | 76.57 | 79.45 | 78.48 | 72.03 | 57.52 | 36.50 | 31.71 | 57.97 | ||||||||||||
1973 | 29.13 | 35.11 | 42.16 | 51.37 | 65.42 | 76.30 | 78.03 | b | 77.10 | a | 69.60 | 62.42 | 50.00 | 37.42 | 56.17 | |||||||||||
1974 | 30.03 | 36.25 | 52.27 | a | 57.43 | 73.23 | 78.77 | ----- | z | 74.84 | 70.93 | 62.17 | a | 44.97 | a | 31.97 | a | 55.71 | a | |||||||
1975 | 31.06 | 36.39 | 44.84 | 53.17 | 64.74 | 74.77 | 78.60 | a | 78.87 | 68.80 | 63.68 | 43.60 | 33.58 | 56.01 | ||||||||||||
1976 | 35.29 | 45.54 | a | 47.67 | a | 57.73 | 65.03 | 76.43 | 81.65 | 77.68 | 70.63 | c | 57.94 | 47.07 | 36.84 | 58.29 | ||||||||||
1977 | 32.97 | 41.00 | a | 45.42 | 59.30 | 68.13 | 79.67 | 79.24 | b | 77.59 | b | 72.33 | 63.42 | 48.79 | a | 43.29 | 59.26 | |||||||||
1978 | 38.52 | b | 41.40 | c | 52.52 | 62.03 | 63.70 | a | 78.69 | a | 83.28 | b | 79.29 | 72.43 | b | 64.23 | a | 55.77 | q | ----- | z | 63.61 | b | |||
1979 | 27.07 | a | 32.16 | c | 41.76 | b | 56.81 | d | 63.68 | c | 74.82 | b | 81.61 | 76.74 | 75.03 | ----- | z | 38.54 | b | 40.42 | 55.33 | a | ||||
1980 | 38.35 | 43.24 | 44.26 | 51.90 | 61.42 | 79.70 | 85.13 | 80.48 | 74.03 | 59.19 | 49.23 | 48.60 | a | 59.63 | ||||||||||||
1981 | 44.50 | a | 45.04 | 44.19 | 62.00 | 63.16 | 80.86 | a | 80.26 | 76.52 | 71.43 | 58.58 | 50.70 | 39.70 | a | 59.75 | ||||||||||
1982 | 35.29 | 38.00 | 46.42 | 55.10 | 63.71 | 75.97 | 81.59 | b | 76.84 | 67.97 | 56.65 | 44.80 | 36.61 | 56.58 | ||||||||||||
1983 | 37.52 | 39.29 | 44.55 | 49.33 | 60.83 | b | 70.87 | 78.13 | 78.39 | 76.00 | 60.52 | 45.34 | a | 30.55 | 55.94 | |||||||||||
1984 | 27.26 | 34.00 | 41.10 | 52.07 | 70.77 | 74.33 | 82.19 | 77.19 | 72.17 | 51.70 | a | 46.80 | 37.23 | 55.57 | ||||||||||||
1985 | 33.39 | 33.64 | 46.03 | 57.97 | 66.16 | 77.23 | 80.23 | 80.29 | 68.33 | 59.73 | a | 43.40 | 38.33 | a | 57.06 | |||||||||||
1986 | 44.27 | a | 43.89 | a | 53.19 | 56.60 | 66.55 | 74.07 | 78.19 | 79.87 | 67.77 | 55.39 | c | 44.63 | 35.29 | 58.31 | ||||||||||
1987 | 32.74 | 38.50 | 43.10 | 58.97 | 63.42 | 77.97 | 82.33 | d | ----- | z | ----- | z | 64.45 | b | ----- | z | 31.93 | a | 54.82 | c | ||||||
1988 | 27.13 | ----- | z | 44.71 | ----- | z | ----- | z | 76.07 | b | 81.00 | e | 79.34 | b | 70.17 | a | 65.43 | a | 44.28 | a | 36.66 | b | 58.31 | c | ||
1989 | 34.16 | 34.93 | 54.48 | 62.70 | 70.52 | 75.87 | 82.97 | b | 78.13 | 72.93 | a | 60.90 | 50.73 | 38.53 | a | 59.74 | ||||||||||
1990 | 34.83 | a | 41.18 | 49.42 | 58.17 | 63.68 | 80.89 | c | 79.17 | a | 77.07 | c | 74.27 | 60.06 | 47.77 | 34.13 | a | 58.39 | ||||||||
1991 | 32.26 | 44.43 | 46.85 | e | 55.83 | a | 67.07 | b | 75.83 | 79.10 | 76.81 | 70.10 | 62.58 | 39.10 | 29.03 | a | 56.58 | |||||||||
1992 | 27.74 | 33.31 | 43.27 | a | 60.17 | 66.07 | b | 74.57 | 77.58 | 75.66 | b | 71.50 | b | 63.63 | a | 37.37 | 28.58 | 54.95 | ||||||||
1993 | 32.57 | a | 34.57 | 47.97 | 54.80 | 63.52 | 75.79 | b | 81.71 | 73.80 | a | 68.50 | 56.20 | a | 41.34 | a | 37.17 | a | 55.66 | |||||||
1994 | 38.13 | 37.30 | a | 50.43 | a | 55.93 | b | 64.83 | b | 80.77 | 82.30 | a | 80.24 | b | 70.93 | 57.20 | a | 42.59 | a | 39.10 | a | 58.31 | ||||
1995 | 35.66 | b | 48.26 | a | 48.55 | 50.41 | a | 60.07 | c | 72.48 | a | 77.67 | a | 80.60 | a | 69.10 | a | 61.55 | 50.27 | 40.38 | b | 57.92 | ||||
1996 | 36.16 | 44.18 | a | 47.19 | 55.43 | b | 73.27 | a | 77.50 | b | 81.43 | a | 79.89 | d | 67.28 | a | 59.44 | d | 46.48 | a | 35.06 | 58.61 | ||||
1997 | 33.41 | b | 37.57 | 51.68 | 50.90 | 63.68 | 75.10 | 79.65 | 76.39 | 72.13 | 58.55 | 41.90 | 29.13 | a | 55.84 | |||||||||||
1998 | 33.97 | 35.00 | 44.50 | a | 49.87 | 68.74 | 75.86 | a | 79.06 | 77.61 | 75.77 | 58.26 | 48.33 | 40.10 | 57.26 | |||||||||||
1999 | 40.23 | 44.64 | 53.62 | b | 52.34 | a | 62.16 | 74.63 | 79.07 | a | 75.52 | 70.17 | 63.10 | 55.20 | 37.00 | 58.97 | ||||||||||
2000 | 40.37 | a | 45.17 | 48.39 | 59.79 | a | 70.48 | 77.27 | 83.06 | 81.55 | 73.53 | 59.35 | 37.70 | 38.90 | a | 59.63 | ||||||||||
2001 | 34.13 | a | 39.68 | 44.74 | 58.60 | 67.10 | 79.13 | 81.26 | 77.23 | 74.38 | a | 61.45 | 48.97 | 35.32 | 58.50 | |||||||||||
2002 | 34.61 | 37.07 | a | 47.19 | 63.93 | 68.47 | a | 83.07 | 83.33 | a | 80.32 | 70.80 | 57.70 | a | 45.50 | 35.03 | a | 58.92 | ||||||||
2003 | 43.45 | 38.46 | 45.16 | 58.23 | 67.07 | b | 73.96 | b | 86.03 | 79.39 | 70.75 | b | 64.26 | 45.60 | 37.33 | a | 59.14 | |||||||||
2004 | 34.94 | 31.79 | a | 53.68 | 55.52 | a | 68.39 | 76.30 | 78.52 | 76.55 | 70.59 | a | 57.42 | 44.76 | a | 36.81 | 57.10 | |||||||||
2005 | 38.13 | a | 37.96 | 44.16 | 55.62 | a | 67.29 | 75.67 | 83.52 | 75.71 | 73.62 | a | 58.97 | 47.80 | 36.23 | 57.89 | ||||||||||
2006 | 37.26 | 40.50 | 46.19 | 60.13 | 69.84 | 80.10 | a | 78.84 | 75.35 | 64.88 | d | 55.39 | 47.73 | 33.90 | 57.51 | |||||||||||
2007 | 28.68 | 37.79 | 51.26 | 54.43 | 63.81 | 76.40 | 79.26 | 79.87 | 71.83 | 59.97 | 48.63 | 27.35 | 56.61 | |||||||||||||
2008 | 24.35 | 33.83 | 45.23 | 54.63 | 63.81 | 77.87 | 80.10 | 76.58 | 70.03 | 60.10 | 45.47 | 33.77 | 55.48 | |||||||||||||
2009 | 34.19 | 41.00 | 49.29 | 53.13 | 67.94 | 70.53 | 83.06 | 79.61 | 69.40 | 53.39 | 47.43 | 30.35 | 56.61 | |||||||||||||
2010 | 33.81 | 33.54 | 44.19 | 56.30 | 64.61 | 79.57 | 80.84 | 79.10 | 75.53 | 60.10 | 43.63 | 40.42 | 57.64 | |||||||||||||
2011 | 33.10 | 34.75 | 51.68 | 57.33 | 62.74 | 79.90 | 84.23 | 81.48 | 69.73 | 58.10 | 44.67 | 29.16 | 57.24 | |||||||||||||
2012 | 37.42 | 35.76 | 53.65 | 61.43 | 67.65 | 82.60 | 81.23 | 79.74 | 71.47 | 60.58 | 49.07 | 31.20 | a | 59.32 | ||||||||||||
2013 | 24.87 | 34.81 | a | 47.00 | 53.28 | a | 66.33 | g | 83.82 | m | 79.23 | a | 80.10 | 71.67 | 56.60 | a | 42.86 | a | 26.87 | 51.73 | b | |||||
2014 | 31.00 | 38.93 | 48.16 | 54.80 | 65.81 | 77.60 | 79.65 | 75.77 | 75.10 | 61.06 | 45.37 | 33.03 | 57.19 | |||||||||||||
2015 | 31.35 | 39.68 | 51.13 | 56.83 | 60.35 | 78.20 | 77.19 | 78.84 | 75.73 | 62.65 | 44.07 | 32.39 | 57.37 | |||||||||||||
2016 | 28.19 | 41.76 | 50.61 | 53.60 | 61.77 | 80.43 | 83.81 | 75.19 | 72.70 | 64.29 | 47.30 | 31.90 | 57.63 | |||||||||||||
2017 | 30.00 | 42.29 | 53.90 | 55.60 | 64.06 | 79.37 | 79.87 | a | 75.26 | 72.50 | 59.81 | 53.13 | 43.03 | 59.07 | ||||||||||||
2018 | 40.48 | 43.29 | 49.97 | 57.63 | 70.29 | 82.70 | 82.55 | 79.48 | 74.57 | 57.97 | a | 42.73 | 34.84 | 59.71 | ||||||||||||
2019 | 29.35 | 35.04 | 47.65 | 56.93 | 59.61 | 74.03 | 81.90 | 80.87 | a | 75.63 | 56.16 | 46.83 | 32.68 | 56.39 | ||||||||||||
2020 | 31.65 | 37.83 | 50.23 | 57.97 | 71.19 | 78.07 | 81.68 | 82.29 | 70.97 | 64.65 | 48.77 | 35.97 | 59.27 | |||||||||||||
2021 | 34.23 | 36.50 | 45.19 | 55.57 | 66.10 | 76.77 | 80.65 | 78.77 | 76.93 | 58.26 | 52.57 | 42.45 | 58.66 | |||||||||||||
2022 | 39.16 | 37.29 | 47.13 | 57.60 | 69.83 | a | 75.43 | 80.84 | 76.84 | 75.10 | 58.10 | 43.10 | 37.71 | 58.18 | ||||||||||||
2023 | 33.55 | 37.82 | 42.84 | 55.67 | 65.55 | 73.60 | 86.61 | 82.03 | 73.50 | 62.26 | 48.77 | 37.39 | 58.30 | |||||||||||||
2024 | 36.32 | 40.86 | 44.64 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.61 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.43 | 38.87 | 47.18 | 56.28 | 66.04 | 76.90 | 80.87 | 78.07 | 71.81 | 60.27 | 45.81 | 35.88 | 57.73 | |||||||||||||
S.D. | 4.30 | 4.18 | 3.80 | 3.33 | 3.25 | 2.77 | 2.07 | 2.14 | 2.64 | 3.42 | 3.85 | 4.37 | 1.29 | |||||||||||||
SKEW | 0.02 | 0.24 | 0.20 | 0.15 | 0.04 | -0.07 | 0.55 | -0.00 | -0.12 | -0.22 | -0.27 | 0.15 | -0.02 | |||||||||||||
MAX | 44.50 | 48.54 | 54.84 | 63.93 | 73.27 | 83.07 | 86.61 | 82.29 | 76.93 | 68.71 | 55.20 | 48.60 | 60.43 | |||||||||||||
MIN | 24.35 | 31.07 | 39.81 | 49.33 | 59.61 | 70.53 | 77.19 | 73.42 | 64.88 | 51.19 | 36.50 | 26.87 | 54.95 | |||||||||||||
YRS | 74 | 73 | 74 | 72 | 71 | 72 | 72 | 72 | 73 | 73 | 71 | 73 | 67 |