YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.12 | n | 86.48 | 81.39 | 77.03 | 59.23 | a | 48.50 | 31.16 | 63.97 | f | |||||
1953 | 28.39 | 32.36 | 42.13 | 50.47 | 69.65 | 82.17 | 83.23 | 84.10 | 76.97 | 70.90 | 51.10 | 34.87 | 58.86 | |||||||||||||
1954 | 27.66 | b | 43.04 | 41.32 | 62.97 | 65.42 | 82.30 | 86.48 | 80.81 | 72.90 | a | 58.71 | 48.13 | 31.16 | 58.41 | |||||||||||
1955 | 25.58 | 28.25 | 40.77 | 66.60 | 76.19 | 77.93 | 89.06 | 88.32 | 78.53 | 62.77 | 38.03 | 25.17 | a | 58.10 | ||||||||||||
1956 | 25.13 | 28.50 | a | 37.19 | 56.33 | 72.13 | ----- | z | 79.81 | 81.94 | 73.03 | 70.16 | 42.90 | a | 34.55 | 54.70 | a | |||||||||
1957 | 22.71 | 35.00 | 42.58 | 60.20 | 69.97 | 79.77 | 87.26 | 81.67 | a | 73.33 | 59.55 | 40.63 | 34.84 | 57.29 | ||||||||||||
1958 | 29.03 | 26.39 | 43.86 | j | 60.00 | 73.81 | 74.23 | 80.52 | 82.74 | 73.63 | 66.16 | 47.30 | 25.00 | 58.07 | a | |||||||||||
1959 | 21.52 | 26.18 | 38.90 | 58.73 | 72.81 | 80.17 | a | 81.81 | 83.97 | 73.00 | 53.39 | 34.28 | e | 37.40 | a | 55.18 | ||||||||||
1960 | 28.47 | a | 29.66 | 32.77 | 59.04 | b | 68.58 | 75.80 | 82.42 | 82.00 | a | 72.67 | 61.65 | 47.50 | 29.29 | 55.82 | ||||||||||
1961 | 25.90 | 36.93 | 40.48 | 50.10 | a | 68.10 | 80.79 | a | 80.44 | f | 82.94 | 70.24 | a | 64.17 | a | 43.03 | 26.26 | 53.54 | a | |||||||
1962 | 21.19 | 25.33 | a | 36.33 | a | 55.03 | a | 73.59 | b | 77.34 | a | 78.82 | c | 81.69 | b | 70.18 | b | 62.10 | 46.27 | d | 30.26 | 54.84 | ||||
1963 | 16.03 | 31.08 | b | 48.78 | d | 54.27 | 64.65 | 78.30 | 81.18 | i | 75.52 | b | 68.83 | 66.74 | 43.00 | u | 21.26 | 52.54 | b | |||||||
1964 | 33.97 | 39.14 | 39.84 | 59.62 | a | 75.16 | 82.55 | a | 89.77 | 82.10 | a | 70.70 | 60.48 | 47.07 | 25.61 | 58.83 | ||||||||||
1965 | 23.19 | 25.57 | 30.77 | 52.45 | a | 73.19 | 78.17 | 82.32 | 79.70 | a | 66.50 | 62.52 | 44.30 | 37.39 | 54.67 | |||||||||||
1966 | 17.71 | 29.46 | 46.68 | 52.43 | 66.50 | a | 79.20 | 85.61 | 80.32 | 73.33 | 62.00 | 43.27 | 29.90 | 55.54 | ||||||||||||
1967 | 28.97 | 25.25 | 42.97 | 57.27 | 65.00 | 77.77 | 82.14 | b | 78.06 | 73.90 | 58.74 | 40.30 | 34.25 | c | 55.38 | |||||||||||
1968 | 26.10 | 27.66 | 53.29 | 62.80 | 66.94 | 78.37 | 81.90 | 82.52 | 73.23 | 62.81 | 43.21 | b | 29.47 | a | 57.36 | |||||||||||
1969 | 21.68 | 31.14 | 35.35 | 61.37 | 72.26 | 70.37 | 80.97 | 84.10 | 74.11 | b | 57.77 | 44.23 | 29.55 | 55.24 | ||||||||||||
1970 | 17.61 | 30.11 | 38.13 | 60.37 | 72.10 | 80.47 | 85.29 | 83.23 | 72.90 | 61.48 | 42.04 | b | 29.90 | b | 56.13 | |||||||||||
1971 | 21.10 | a | 27.71 | 36.84 | 60.33 | 67.17 | b | 83.93 | 79.68 | 82.23 | 75.73 | 66.94 | 44.14 | b | 30.83 | a | 56.39 | |||||||||
1972 | 23.13 | a | 26.92 | e | 37.42 | e | 57.62 | n | 73.75 | k | 80.28 | a | 79.08 | f | 81.24 | b | 72.83 | 56.45 | 39.80 | 23.35 | 49.05 | c | ||||
1973 | 28.42 | 32.43 | 50.42 | 54.67 | 66.74 | 80.77 | 83.97 | 82.74 | 72.00 | 67.81 | 45.97 | 27.52 | 57.79 | |||||||||||||
1974 | 24.94 | 30.07 | 41.19 | 60.23 | 66.16 | 76.97 | 87.52 | 80.13 | 70.73 | 63.26 | 45.67 | 32.19 | 56.59 | |||||||||||||
1975 | 26.81 | 28.39 | 34.58 | 50.27 | 73.13 | 78.70 | 85.71 | 83.65 | 69.57 | 68.00 | 51.00 | 31.23 | 56.75 | |||||||||||||
1976 | 27.13 | 40.03 | 45.35 | 62.87 | 69.55 | 82.20 | 87.65 | 82.87 | 77.30 | 57.77 | 40.10 | 24.74 | 58.13 | |||||||||||||
1977 | 13.90 | 34.43 | 49.90 | 67.63 | 79.45 | 81.07 | 86.87 | 78.74 | 73.73 | 60.10 | 42.70 | 24.94 | 57.79 | |||||||||||||
1978 | 17.87 | 23.32 | 40.73 | a | 57.70 | 72.52 | 80.50 | 81.29 | 83.61 | 79.14 | a | 61.00 | 43.53 | 26.03 | 55.60 | |||||||||||
1979 | 12.55 | 21.86 | 37.71 | 53.43 | 70.55 | 79.07 | 82.81 | 80.10 | 76.03 | 60.35 | 42.47 | 38.10 | 54.58 | |||||||||||||
1980 | 26.26 | 26.90 | 39.42 | 61.10 | 75.13 | 81.13 | 86.65 | 82.42 | 74.90 | 57.42 | 47.23 | 30.23 | 57.40 | |||||||||||||
1981 | 32.39 | 34.79 | 49.26 | 63.50 | 69.00 | 78.73 | 81.26 | 79.35 | 71.87 | 59.10 | 47.73 | 27.77 | 57.90 | |||||||||||||
1982 | 17.90 | a | 28.64 | 38.87 | 54.27 | 68.23 | 70.63 | 81.87 | 80.16 | 69.33 | 59.60 | a | 41.53 | 34.74 | 53.82 | |||||||||||
1983 | 28.16 | 32.68 | 41.16 | 50.57 | 63.19 | 77.70 | 86.71 | 87.26 | 72.90 | 59.94 | 43.10 | a | 14.55 | 54.83 | ||||||||||||
1984 | 24.29 | 36.59 | 34.61 | 56.80 | 64.71 | 79.30 | ----- | z | 84.61 | 74.23 | 62.57 | a | 44.48 | a | 32.03 | 54.02 | a | |||||||||
1985 | 23.61 | 24.85 | a | 45.66 | b | 61.73 | 74.42 | l | 78.58 | d | 85.45 | 78.10 | a | 69.83 | 58.42 | 35.64 | b | 21.03 | a | 52.99 | a | |||||
1986 | 27.37 | a | 25.38 | b | 45.93 | b | 61.70 | c | 69.87 | 80.17 | a | 83.52 | b | 77.42 | 71.50 | 60.39 | 39.17 | 31.58 | 56.17 | |||||||
1987 | 30.39 | 42.57 | 48.97 | 64.33 | 75.20 | a | 83.87 | 85.71 | 78.90 | 74.23 | 58.83 | a | ----- | z | 33.48 | b | 61.50 | a | ||||||||
1988 | 22.32 | 28.79 | 44.94 | ----- | z | 77.52 | 87.87 | 88.23 | ----- | z | 75.87 | 59.52 | ----- | z | ----- | z | 60.63 | d | ||||||||
1989 | 33.97 | a | 26.89 | a | 39.10 | 55.76 | a | 69.03 | 78.33 | 86.39 | 82.39 | 72.60 | 66.87 | 40.33 | 21.23 | 56.07 | ||||||||||
1990 | 35.16 | 33.25 | 46.65 | 57.27 | 64.81 | 78.23 | 81.06 | 79.65 | 74.77 | 60.48 | 49.67 | 26.45 | 57.29 | |||||||||||||
1991 | 20.39 | 33.50 | 43.06 | 58.77 | 69.35 | 82.63 | 81.32 | 81.50 | a | 69.41 | a | 58.19 | 33.80 | 31.10 | 55.25 | |||||||||||
1992 | 28.74 | 35.14 | 41.19 | ----- | z | 71.13 | 76.80 | ----- | z | 75.48 | 69.67 | 59.39 | 37.80 | 28.77 | 52.41 | b | ||||||||||
1993 | 24.42 | 25.11 | 36.65 | 52.43 | 65.32 | 74.80 | 78.80 | a | 79.32 | 64.97 | 57.90 | 39.33 | 29.23 | 52.36 | ||||||||||||
1994 | 15.90 | 21.21 | 43.90 | 57.27 | 70.97 | 79.70 | 77.97 | 76.42 | 73.47 | 60.48 | 46.20 | 32.68 | 54.68 | |||||||||||||
1995 | 23.61 | 29.32 | 43.23 | 49.87 | 65.87 | 80.57 | 82.13 | 84.32 | 69.93 | 58.84 | 34.79 | a | 26.65 | 54.09 | ||||||||||||
1996 | 19.87 | 25.86 | 36.39 | 52.03 | 63.29 | 75.80 | 79.77 | 79.48 | 70.93 | 60.29 | 33.63 | 23.35 | 51.73 | |||||||||||||
1997 | 20.10 | 29.59 | a | 39.97 | 54.70 | 62.53 | a | 80.27 | 79.81 | 76.13 | 72.40 | 61.13 | 37.00 | a | 32.58 | 53.85 | ||||||||||
1998 | 26.42 | 38.07 | 39.00 | 59.90 | 75.00 | 74.33 | 81.81 | 79.90 | 78.27 | 60.68 | 46.69 | a | 37.55 | 58.13 | ||||||||||||
1999 | 20.10 | 36.32 | 43.42 | 57.33 | 69.48 | 77.23 | 84.84 | 78.10 | 72.27 | 60.29 | 52.73 | 33.45 | 57.13 | |||||||||||||
2000 | 25.52 | 36.14 | 50.71 | 57.43 | 70.48 | 75.43 | 79.97 | 79.90 | 72.97 | 63.32 | 39.47 | 15.29 | 55.55 | |||||||||||||
2001 | 26.65 | 22.89 | 35.48 | 59.55 | a | 69.29 | 76.83 | 84.71 | 83.48 | 70.83 | 58.35 | 57.07 | 37.16 | 56.86 | ||||||||||||
2002 | 34.52 | 37.96 | 36.32 | 56.47 | 67.16 | 79.90 | 85.16 | 80.16 | 75.67 | 53.87 | 42.47 | 34.29 | 57.00 | |||||||||||||
2003 | 23.45 | 27.43 | 41.68 | 57.67 | 67.55 | 77.10 | 82.10 | 85.68 | 73.80 | 61.65 | 40.83 | 33.35 | 56.02 | |||||||||||||
2004 | 22.16 | 28.97 | 43.47 | a | 60.73 | 67.52 | 75.17 | 79.39 | 74.65 | 76.77 | 59.67 | a | 46.13 | 31.03 | 55.47 | |||||||||||
2005 | 23.55 | 34.43 | 39.74 | 62.10 | 64.48 | 82.10 | 83.55 | 79.94 | 76.73 | 62.90 | 45.80 | 23.68 | 56.58 | |||||||||||||
2006 | 36.03 | 29.32 | 40.68 | 62.63 | 67.94 | 78.37 | 85.65 | 80.19 | 68.23 | 55.45 | 46.37 | 36.00 | 57.24 | |||||||||||||
2007 | 28.26 | 18.57 | 44.87 | 55.07 | 73.74 | 79.73 | 83.26 | 80.52 | 75.50 | 63.61 | 42.97 | 24.87 | 55.91 | |||||||||||||
2008 | 20.90 | 22.28 | 36.71 | 53.07 | 66.87 | 78.03 | 83.68 | 81.48 | 74.90 | 60.35 | 43.97 | 24.84 | 53.92 | |||||||||||||
2009 | 17.65 | 31.79 | 43.03 | 57.67 | 68.55 | 76.63 | 77.00 | 77.90 | 76.37 | 51.42 | 52.70 | 25.74 | 54.70 | |||||||||||||
2010 | 20.33 | a | 27.82 | 49.58 | 65.72 | a | 70.32 | 79.30 | 84.33 | a | 85.33 | a | 71.80 | 66.23 | 44.77 | 23.77 | a | 57.44 | ||||||||
2011 | 20.65 | 27.11 | 38.65 | 53.93 | 67.06 | 78.43 | 86.23 | 82.45 | 71.07 | 65.23 | 47.77 | 34.77 | 56.11 | |||||||||||||
2012 | 31.39 | 36.41 | 60.19 | 59.07 | 74.55 | 81.93 | 89.84 | 80.65 | 73.87 | 57.74 | 47.33 | 33.23 | a | 60.52 | ||||||||||||
2013 | 27.74 | 26.71 | 33.45 | 47.93 | 66.16 | 75.73 | 81.42 | 80.84 | 75.83 | 59.39 | 40.30 | 23.16 | 53.22 | |||||||||||||
2014 | 19.23 | 17.71 | 32.74 | 53.10 | 67.61 | 79.03 | 77.67 | a | 80.58 | 73.30 | 57.90 | 34.24 | a | 30.48 | 51.97 | |||||||||||
2015 | 25.06 | 18.71 | 42.90 | 59.27 | 67.26 | 77.10 | a | 79.58 | 77.31 | b | 78.27 | 62.23 | 49.57 | 37.65 | 56.24 | |||||||||||
2016 | 23.13 | 31.31 | 46.93 | b | 57.00 | 68.84 | 79.53 | 80.42 | 80.53 | a | 73.97 | 62.45 | 53.50 | 26.77 | 57.03 | |||||||||||
2017 | 26.74 | 38.07 | 40.13 | 58.20 | 65.42 | 79.80 | 81.90 | 76.26 | 76.76 | a | 61.10 | 41.80 | 28.61 | 56.23 | ||||||||||||
2018 | 23.32 | 26.04 | 41.39 | 44.73 | 74.81 | 79.77 | 88.19 | e | ----- | z | ----- | z | ----- | z | ----- | z | 33.60 | k | 54.03 | e | ||||||
2019 | 22.00 | 21.56 | a | 36.69 | b | 53.24 | e | 62.43 | a | 76.96 | e | 82.19 | 77.97 | b | 74.45 | a | 55.35 | e | 36.58 | d | 37.12 | o | 54.49 | a | ||
2020 | 29.03 | a | 30.18 | a | 44.25 | c | 54.10 | 66.62 | b | 81.07 | b | 83.87 | 81.83 | a | 70.04 | b | 52.52 | b | 50.21 | b | 35.57 | a | 56.61 | |||
2021 | 28.31 | b | 18.59 | a | 49.62 | b | 56.48 | a | 67.23 | 84.90 | 81.00 | 80.35 | 75.07 | 65.13 | 47.63 | 35.07 | a | 57.45 | ||||||||
2022 | 18.61 | 26.14 | 41.68 | 48.47 | 70.26 | 79.33 | 81.32 | 79.55 | 74.83 | 62.06 | 45.20 | 25.84 | 54.44 | |||||||||||||
2023 | 29.45 | 30.50 | 39.58 | 56.37 | 72.55 | b | 81.57 | 81.75 | c | 82.77 | a | 77.82 | b | 61.43 | c | 47.21 | a | 38.87 | 58.32 | |||||||
2024 | 22.97 | 44.72 | 48.50 | a | 51.50 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.73 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.51 | 29.76 | 41.73 | 57.15 | 69.36 | 78.99 | 83.24 | 80.91 | 73.30 | 60.88 | 43.86 | 29.63 | 56.12 | |||||||||||||
S.D. | 5.05 | 5.93 | 5.41 | 4.67 | 3.81 | 2.93 | 3.10 | 2.72 | 2.90 | 3.79 | 5.06 | 5.32 | 1.75 | |||||||||||||
SKEW | 0.07 | 0.28 | 0.63 | -0.17 | 0.38 | -0.19 | 0.21 | 0.04 | -0.28 | 0.21 | -0.03 | -0.47 | -0.31 | |||||||||||||
MAX | 36.03 | 44.72 | 60.19 | 67.63 | 79.45 | 87.87 | 89.84 | 88.32 | 79.14 | 70.90 | 57.07 | 38.87 | 60.52 | |||||||||||||
MIN | 12.55 | 17.71 | 30.77 | 44.73 | 62.43 | 70.37 | 77.00 | 74.65 | 64.97 | 51.42 | 33.63 | 14.55 | 51.73 | |||||||||||||
YRS | 72 | 72 | 71 | 68 | 69 | 70 | 67 | 70 | 71 | 71 | 68 | 69 | 59 |