YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.90 | 58.52 | 47.40 | 32.90 | 53.43 | h | ||||
1953 | 30.03 | 30.21 | 40.26 | 51.43 | 68.97 | 81.77 | 83.48 | 82.16 | 74.00 | 68.13 | 48.53 | 30.81 | 57.48 | |||||||||||||
1954 | 24.55 | 37.00 | 36.19 | 55.23 | 60.03 | 77.23 | 80.42 | 77.26 | 69.10 | 57.55 | 46.03 | 30.90 | 54.29 | |||||||||||||
1955 | 25.61 | 28.00 | 37.84 | 61.87 | 72.77 | 77.37 | 87.90 | 86.19 | 76.63 | 61.48 | 38.73 | 26.45 | 56.74 | |||||||||||||
1956 | 29.58 | 30.04 | a | 37.06 | 52.40 | 67.16 | 81.23 | 77.97 | 78.90 | 70.33 | 67.65 | 42.77 | 32.16 | 55.60 | ||||||||||||
1957 | 21.03 | 32.54 | 42.29 | 56.67 | 67.29 | 78.87 | 84.94 | 81.55 | 70.43 | 58.77 | 43.28 | l | 33.55 | 57.08 | a | |||||||||||
1958 | 30.00 | 27.14 | 42.16 | 59.37 | 71.16 | 74.50 | 81.58 | 84.16 | 72.67 | 62.68 | 45.30 | 24.61 | 56.28 | |||||||||||||
1959 | 20.84 | 26.32 | 37.94 | 55.60 | 74.10 | 80.23 | 82.10 | 83.29 | 73.90 | 53.10 | 35.37 | 35.39 | 54.85 | |||||||||||||
1960 | 28.77 | 30.59 | 34.97 | 57.33 | 66.52 | 76.00 | 81.94 | 81.61 | 73.50 | 59.42 | 46.73 | 29.39 | 55.56 | |||||||||||||
1961 | 27.23 | 37.11 | 43.61 | h | 52.30 | 68.74 | 79.77 | 82.13 | 82.42 | 72.07 | 62.57 | a | 43.30 | 28.10 | 57.79 | a | ||||||||||
1962 | 22.71 | 26.43 | 40.00 | 56.70 | 71.03 | 76.57 | 79.48 | 81.87 | 69.10 | 61.42 | 43.33 | i | 29.65 | 55.91 | a | |||||||||||
1963 | 15.55 | 23.96 | 43.00 | 61.23 | 67.84 | 82.38 | a | 84.26 | 79.35 | 72.53 | 70.03 | 47.43 | 24.83 | a | 56.03 | |||||||||||
1964 | 32.48 | 35.34 | 39.71 | 58.40 | 74.61 | 80.17 | 84.81 | 76.94 | 69.27 | 60.10 | 48.50 | 26.77 | 57.26 | |||||||||||||
1965 | 24.66 | b | 28.93 | 34.13 | 51.30 | 74.87 | 77.07 | a | 81.13 | 78.87 | 66.43 | 61.39 | 45.17 | 35.61 | 54.96 | |||||||||||
1966 | 21.77 | 31.18 | 44.61 | 53.03 | 66.35 | 81.53 | 86.81 | 79.39 | 72.60 | 60.48 | 42.87 | 30.77 | 55.95 | |||||||||||||
1967 | 29.42 | 24.89 | 40.29 | 56.83 | 64.58 | 78.17 | 80.45 | 78.03 | 72.47 | 58.32 | 39.30 | 31.19 | 54.50 | |||||||||||||
1968 | 26.71 | 28.90 | 51.90 | 59.73 | 67.26 | 77.37 | 82.32 | 81.74 | 73.03 | 62.77 | 43.27 | 29.61 | 57.05 | |||||||||||||
1969 | 24.03 | 32.93 | 38.10 | 58.70 | 72.35 | 69.93 | 82.16 | 86.83 | a | 71.93 | 57.26 | 43.07 | 31.16 | 55.70 | ||||||||||||
1970 | 20.52 | 30.32 | i | 39.52 | 58.37 | 69.10 | 80.57 | 86.32 | 84.48 | 73.20 | 62.03 | 41.83 | 30.16 | 58.74 | a | |||||||||||
1971 | 21.06 | 28.89 | 36.94 | 58.20 | 68.52 | 83.30 | 80.00 | 79.68 | 75.67 | 66.32 | 44.40 | 32.13 | a | 56.26 | ||||||||||||
1972 | 24.13 | a | 28.17 | 36.47 | a | 51.27 | 75.29 | 78.69 | a | 82.81 | 80.10 | 71.59 | a | 57.00 | 41.20 | 26.26 | 54.41 | |||||||||
1973 | 30.68 | 32.29 | 49.67 | a | 53.33 | 63.87 | 81.07 | a | 86.07 | a | 83.58 | 73.07 | 67.29 | 43.43 | 29.10 | 57.79 | ||||||||||
1974 | 27.71 | 30.86 | 40.16 | 56.67 | 63.19 | 74.53 | 83.84 | 78.55 | 67.60 | 58.87 | 44.20 | 33.03 | a | 54.93 | ||||||||||||
1975 | 27.58 | 28.18 | 35.55 | 47.67 | 72.65 | 75.43 | 83.00 | 80.29 | 66.80 | 63.55 | 49.90 | 30.13 | 55.06 | |||||||||||||
1976 | 23.69 | b | 34.38 | 40.77 | 59.10 | 67.10 | 82.62 | a | 85.52 | 80.81 | 73.24 | a | 55.77 | 38.07 | a | 22.52 | 55.30 | |||||||||
1977 | 15.33 | a | 31.18 | 46.39 | 60.93 | 78.32 | 76.03 | 85.52 | 76.35 | 69.30 | 58.77 | a | 41.97 | 26.39 | 55.54 | |||||||||||
1978 | 21.42 | 25.32 | 39.23 | 51.23 | 69.48 | 77.13 | 77.94 | 79.87 | 73.10 | 57.23 | 43.43 | 26.73 | a | 53.51 | ||||||||||||
1979 | 15.77 | 20.86 | 36.97 | 51.20 | 63.42 | 75.70 | 82.68 | 75.87 | 73.10 | 55.03 | 41.37 | 35.29 | 52.27 | |||||||||||||
1980 | 26.00 | 27.86 | 36.26 | 56.87 | 72.71 | 75.55 | a | 83.39 | 79.23 | 69.47 | 53.68 | 43.37 | 27.35 | 54.31 | ||||||||||||
1981 | 26.19 | 31.57 | 45.10 | 56.80 | 68.00 | 77.13 | 80.68 | 79.16 | 69.10 | 53.71 | 47.30 | 29.84 | 55.38 | |||||||||||||
1982 | 16.48 | 26.46 | b | 37.03 | a | 51.50 | 72.06 | 72.83 | 81.90 | 77.29 | 67.33 | 59.58 | 41.27 | 35.00 | 53.23 | |||||||||||
1983 | 29.19 | 34.18 | 40.32 | 51.17 | 60.71 | 76.14 | a | 82.84 | 81.00 | 70.77 | 58.81 | 44.37 | 18.47 | a | 54.00 | |||||||||||
1984 | 22.45 | 36.79 | 34.06 | 56.63 | 64.06 | 78.27 | 79.00 | 77.16 | 64.76 | a | 55.81 | 39.73 | 26.90 | 52.97 | ||||||||||||
1985 | 19.83 | b | 22.64 | 40.65 | 55.62 | a | 68.55 | 70.87 | 79.20 | a | 73.87 | 70.76 | a | 58.81 | 36.90 | 20.39 | 51.51 | |||||||||
1986 | 27.00 | 28.18 | 42.68 | 60.87 | 71.52 | ----- | z | 80.52 | 75.58 | 69.10 | 56.71 | 38.53 | 30.55 | 52.84 | a | |||||||||||
1987 | 28.45 | 35.89 | 44.84 | 60.77 | 70.29 | 80.73 | 82.55 | 77.55 | 71.00 | ----- | z | 45.47 | 33.90 | 57.40 | a | |||||||||||
1988 | 22.07 | a | 24.72 | 39.42 | 56.57 | 75.35 | 85.90 | 86.94 | 83.42 | 70.70 | 51.71 | 42.48 | a | 29.10 | 55.70 | |||||||||||
1989 | 29.84 | 22.93 | a | 33.00 | 52.10 | 66.23 | a | 73.70 | 81.23 | 79.00 | 70.33 | 60.39 | 38.83 | 18.45 | 52.17 | |||||||||||
1990 | 36.77 | 30.93 | 42.10 | 58.70 | 62.77 | 75.73 | 79.29 | 78.97 | 71.27 | 55.97 | 48.07 | 28.32 | 55.74 | |||||||||||||
1991 | 21.23 | 31.04 | 40.65 | 57.87 | 69.68 | 80.03 | 78.23 | 80.23 | 66.23 | 56.71 | 37.70 | 29.71 | 54.11 | |||||||||||||
1992 | 28.87 | 32.28 | 37.71 | 49.80 | 69.23 | 72.80 | 73.55 | 75.52 | 66.67 | 56.45 | 36.40 | 29.06 | 52.36 | |||||||||||||
1993 | 24.55 | 27.61 | 38.48 | 49.87 | 67.16 | 72.53 | 78.90 | 78.65 | 65.33 | 56.06 | 39.80 | 29.58 | 52.38 | |||||||||||||
1994 | 14.68 | 21.71 | 41.13 | 56.60 | 69.87 | 79.57 | 78.00 | 74.81 | 72.87 | 60.39 | 47.00 | a | 34.84 | 54.29 | ||||||||||||
1995 | 26.52 | 28.54 | 42.65 | 48.17 | 65.77 | 81.83 | 82.58 | 81.61 | 69.13 | 58.03 | 33.73 | 26.19 | 53.73 | |||||||||||||
1996 | 24.26 | 26.07 | 32.87 | 50.63 | 61.74 | 74.30 | 77.81 | 80.03 | 70.97 | 59.16 | 36.10 | 26.16 | 51.68 | |||||||||||||
1997 | 21.77 | 30.54 | 38.84 | 54.23 | 60.32 | 78.37 | 79.39 | 75.06 | 71.33 | 58.61 | 39.63 | 34.13 | 53.52 | |||||||||||||
1998 | 27.39 | 36.82 | 40.45 | 60.30 | 74.58 | 75.03 | 81.94 | 80.68 | 77.17 | 59.58 | 45.87 | 37.10 | 58.07 | |||||||||||||
1999 | 21.71 | 34.89 | 43.39 | 58.37 | 69.58 | 78.13 | 84.06 | 77.68 | ----- | z | 58.00 | 52.50 | 30.77 | 55.37 | a | |||||||||||
2000 | 25.00 | 34.62 | 49.97 | 54.77 | 69.39 | 73.47 | 77.65 | 77.55 | 68.40 | 61.00 | 40.77 | 20.68 | 54.44 | |||||||||||||
2001 | 28.19 | 27.46 | 39.13 | 59.27 | 69.58 | 75.43 | 83.13 | 83.39 | 68.60 | 57.45 | 53.23 | 36.13 | 56.75 | |||||||||||||
2002 | 33.35 | 36.79 | 34.81 | 53.97 | 61.71 | 76.60 | 84.77 | 78.65 | 73.83 | 52.52 | 41.73 | 33.13 | 55.15 | |||||||||||||
2003 | 23.32 | 23.19 | a | 39.42 | 53.97 | 65.74 | 75.30 | 80.68 | 81.84 | 71.40 | 59.29 | 41.97 | 34.94 | 54.25 | ||||||||||||
2004 | 20.42 | 31.45 | 42.45 | 57.67 | 63.87 | 73.80 | 78.68 | 75.81 | 78.20 | 59.87 | 46.97 | a | 30.16 | 54.94 | ||||||||||||
2005 | 23.90 | 34.39 | 38.26 | 61.20 | 63.50 | a | 82.30 | 84.87 | 82.42 | 75.93 | 61.81 | 43.50 | 25.90 | 56.50 | ||||||||||||
2006 | 34.32 | 28.32 | 41.77 | 62.37 | 68.39 | 78.43 | 86.71 | 79.19 | 68.33 | 53.19 | 46.00 | 34.45 | 56.79 | |||||||||||||
2007 | 30.97 | 22.33 | a | 44.84 | 54.27 | 72.23 | 80.30 | 81.58 | 80.06 | 73.73 | 64.13 | 42.70 | 27.55 | 56.22 | ||||||||||||
2008 | 25.00 | 24.66 | 37.48 | 54.60 | 65.13 | 77.97 | 81.24 | b | 80.39 | 72.87 | 59.55 | 44.21 | a | 24.55 | 53.97 | |||||||||||
2009 | 19.00 | 32.32 | 40.61 | 54.77 | 68.06 | 75.97 | 78.06 | 77.40 | a | 75.57 | 51.03 | 50.50 | 27.32 | 54.22 | ||||||||||||
2010 | 25.71 | 31.93 | 50.39 | 63.47 | 71.06 | 74.47 | 81.90 | 82.13 | a | 69.20 | 64.23 | 46.00 | 27.90 | 57.37 | ||||||||||||
2011 | 22.23 | 28.54 | 38.26 | 50.43 | 65.00 | 76.30 | 85.66 | b | 81.40 | a | 69.27 | 62.94 | 45.33 | 36.27 | a | 55.13 | ||||||||||
2012 | 31.06 | 36.69 | 57.63 | a | 58.57 | 73.29 | 81.77 | 87.81 | 80.71 | 72.90 | 56.87 | 44.50 | 34.16 | 59.66 | ||||||||||||
2013 | 27.26 | 26.86 | 35.10 | 46.93 | 69.29 | 75.33 | 80.10 | 80.39 | 74.03 | a | 58.19 | 40.83 | 21.74 | 53.00 | ||||||||||||
2014 | 17.32 | 19.57 | 32.29 | 51.04 | c | 67.26 | 78.00 | 78.72 | b | 79.39 | 72.11 | b | 56.26 | 33.97 | 31.65 | 51.46 | ||||||||||
2015 | 23.10 | a | 19.43 | 43.45 | 58.23 | 70.71 | 75.48 | a | 81.47 | a | 78.40 | a | 77.07 | 60.97 | 50.41 | a | 39.55 | 56.52 | ||||||||
2016 | 26.23 | 32.39 | a | 46.00 | 52.34 | a | 69.94 | 78.13 | 81.93 | d | 81.23 | e | 74.10 | 61.77 | 53.00 | 28.00 | 57.09 | |||||||||
2017 | 27.63 | a | 36.93 | 38.03 | 58.37 | 64.58 | 78.34 | a | 81.26 | 75.61 | 75.00 | a | 61.97 | a | 42.10 | 26.10 | 55.49 | |||||||||
2018 | 26.58 | 28.43 | 40.84 | 44.60 | 75.45 | 78.60 | 83.81 | 81.00 | 72.97 | 53.52 | 37.04 | c | 33.74 | 54.71 | ||||||||||||
2019 | 20.14 | c | 23.36 | 38.84 | 52.33 | 62.52 | 74.60 | 83.00 | 78.29 | 72.00 | 56.17 | a | 36.27 | 31.13 | 52.39 | |||||||||||
2020 | 30.68 | 31.21 | 42.77 | 51.17 | 65.94 | 78.97 | 84.23 | 82.48 | 68.90 | 52.26 | 49.97 | 33.55 | 56.01 | |||||||||||||
2021 | 29.29 | 23.79 | 48.10 | 57.43 | 67.19 | 81.73 | 81.48 | 81.19 | 73.97 | 64.39 | 44.10 | 33.90 | 57.21 | |||||||||||||
2022 | 22.29 | 27.75 | 39.61 | 48.77 | 69.06 | 78.40 | 81.03 | 78.90 | 72.10 | 59.90 | 47.70 | 28.32 | 54.49 | |||||||||||||
2023 | 30.68 | 33.36 | 39.10 | 55.93 | 69.71 | 80.63 | 82.81 | 80.42 | 74.60 | 59.94 | 45.90 | 39.77 | 57.74 | |||||||||||||
2024 | 27.97 | 42.79 | 47.87 | 56.44 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.54 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.14 | 29.60 | 40.57 | 55.30 | 68.39 | 77.64 | 82.00 | 79.79 | 71.56 | 59.17 | 43.39 | 29.89 | 55.06 | |||||||||||||
S.D. | 4.70 | 4.84 | 4.71 | 4.13 | 4.06 | 3.14 | 2.81 | 2.66 | 2.94 | 3.96 | 4.49 | 4.55 | 1.77 | |||||||||||||
SKEW | -0.14 | 0.06 | 1.00 | -0.27 | 0.03 | 0.04 | -0.09 | 0.13 | -0.13 | 0.33 | -0.01 | -0.33 | -0.05 | |||||||||||||
MAX | 36.77 | 42.79 | 57.63 | 63.47 | 78.32 | 85.90 | 87.90 | 86.83 | 78.20 | 70.03 | 53.23 | 39.77 | 59.66 | |||||||||||||
MIN | 14.68 | 19.43 | 32.29 | 44.60 | 60.03 | 69.93 | 73.55 | 73.87 | 64.76 | 51.03 | 33.73 | 18.45 | 51.46 | |||||||||||||
YRS | 72 | 71 | 71 | 71 | 71 | 70 | 71 | 71 | 71 | 71 | 70 | 72 | 64 |