YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | 22.81 | 24.63 | a | 38.45 | 58.67 | 72.48 | 81.90 | 86.81 | 85.55 | 69.77 | 63.39 | 45.70 | 28.84 | 56.58 | ||||||||||||
1950 | 17.90 | 25.68 | 31.19 | 44.43 | 65.71 | 78.90 | 80.55 | 78.33 | a | 72.73 | 64.23 | 36.36 | e | 21.00 | 51.42 | |||||||||||
1951 | 17.74 | 24.61 | 27.97 | a | 48.73 | 70.35 | 72.40 | 80.61 | 75.84 | 66.20 | 57.61 | 33.43 | 23.52 | 49.92 | ||||||||||||
1952 | 22.26 | 29.93 | 32.20 | a | 60.83 | a | 67.13 | 78.03 | 81.94 | 78.10 | 73.53 | 56.03 | 45.40 | 29.67 | a | 54.59 | ||||||||||
1953 | 25.10 | a | 26.59 | a | 38.71 | 49.20 | 68.61 | 79.28 | a | 80.97 | 81.19 | 73.17 | 69.03 | 48.17 | 29.67 | a | 55.81 | |||||||||
1954 | 21.03 | 40.61 | 36.68 | 58.34 | a | 62.77 | 80.07 | 82.65 | 79.58 | 69.62 | a | 55.06 | 46.24 | a | 27.77 | 55.04 | ||||||||||
1955 | 21.58 | 23.46 | 36.27 | a | 65.30 | 74.80 | a | 76.83 | a | 85.74 | 83.90 | 72.63 | 60.84 | 33.90 | 21.61 | 54.74 | ||||||||||
1956 | 20.65 | 24.29 | a | 33.38 | b | 52.97 | 67.97 | 82.97 | 77.61 | 80.10 | 69.63 | 67.19 | 41.37 | 32.94 | 54.25 | |||||||||||
1957 | 20.90 | 29.82 | 38.74 | 57.60 | 67.42 | 75.63 | 84.13 | 77.48 | 68.40 | 55.90 | 37.93 | a | 32.90 | a | 53.91 | |||||||||||
1958 | 29.13 | 24.14 | 39.77 | 58.10 | 73.13 | 73.50 | 78.97 | 80.13 | 71.77 | 63.58 | 44.77 | 24.74 | 55.14 | |||||||||||||
1959 | 20.29 | 25.79 | 42.81 | 60.23 | 71.55 | 79.13 | 83.16 | 82.61 | 71.57 | 51.06 | 32.57 | 36.65 | 54.78 | |||||||||||||
1960 | 23.90 | 26.22 | b | 29.45 | 57.30 | 68.16 | 75.77 | 82.58 | 82.10 | 70.57 | 61.19 | 44.50 | 28.68 | 54.20 | ||||||||||||
1961 | 25.47 | a | 34.43 | 41.48 | 49.40 | 67.52 | 79.27 | 80.52 | 82.42 | 70.50 | 62.87 | 40.87 | 24.65 | 54.95 | ||||||||||||
1962 | 19.42 | 22.18 | 33.06 | 54.30 | 70.61 | 76.63 | 77.71 | 79.52 | 68.53 | 62.13 | 46.37 | 30.58 | 53.42 | |||||||||||||
1963 | 14.77 | a | 25.46 | 46.17 | a | 59.87 | 67.71 | 81.27 | 83.48 | 80.58 | 74.80 | 70.87 | 49.93 | a | 19.55 | 56.20 | ||||||||||
1964 | 31.10 | 37.62 | 38.55 | 59.20 | 73.70 | a | 80.87 | 86.97 | 79.00 | 69.80 | 60.13 | 44.77 | 23.77 | a | 57.12 | |||||||||||
1965 | 21.65 | 23.25 | 27.13 | 50.13 | 70.84 | 77.60 | 80.32 | 77.55 | 60.17 | 61.81 | 41.57 | 34.19 | 52.18 | |||||||||||||
1966 | 12.74 | 25.54 | 45.74 | 50.60 | 66.19 | 80.07 | 85.48 | 77.77 | 70.83 | 59.29 | 37.93 | 24.97 | 53.10 | |||||||||||||
1967 | 27.10 | 21.82 | 39.74 | 54.80 | 64.74 | 75.77 | 79.42 | 77.71 | 71.37 | 57.81 | 40.40 | 32.10 | 53.56 | |||||||||||||
1968 | 24.55 | 24.48 | 51.84 | 61.24 | a | 64.90 | 77.40 | 79.97 | 79.68 | 69.40 | 60.52 | 39.97 | 24.87 | 54.90 | ||||||||||||
1969 | 18.13 | 28.86 | 33.55 | 58.63 | 71.48 | 71.43 | 81.74 | 83.39 | 72.33 | 54.61 | 41.13 | 26.19 | 53.46 | |||||||||||||
1970 | 15.61 | 28.50 | 34.03 | 54.40 | 70.52 | 80.80 | 84.42 | 81.55 | 69.47 | 56.77 | 38.33 | 25.94 | 53.36 | |||||||||||||
1971 | 16.65 | 25.79 | 35.58 | 59.63 | 67.45 | 81.97 | 79.71 | 80.10 | 72.87 | 62.50 | a | 40.40 | 26.87 | 54.13 | ||||||||||||
1972 | 16.81 | 21.28 | 35.48 | 51.67 | 72.26 | 78.47 | 78.71 | 79.13 | 69.13 | 54.10 | 38.17 | 20.74 | 51.33 | |||||||||||||
1973 | 26.42 | 30.00 | 46.81 | 54.63 | 66.16 | 79.83 | 82.06 | 81.32 | 68.60 | 64.42 | 42.93 | 25.19 | 55.70 | |||||||||||||
1974 | 22.16 | 27.11 | 37.61 | 58.17 | 65.35 | 77.30 | 86.77 | 77.47 | a | 69.70 | 62.10 | 41.77 | 30.97 | 54.71 | ||||||||||||
1975 | 24.45 | 25.04 | 31.35 | 46.20 | 73.13 | 77.43 | 85.81 | 80.23 | 68.43 | 65.06 | 46.53 | 27.94 | 54.30 | |||||||||||||
1976 | 23.23 | 36.62 | 41.13 | 63.23 | 70.52 | 81.93 | 86.48 | 81.52 | 73.27 | 55.26 | 37.77 | 23.42 | 56.20 | |||||||||||||
1977 | 11.03 | a | 33.04 | 45.06 | 64.93 | a | 78.23 | 78.87 | 85.74 | 76.07 | a | 70.43 | 57.90 | 41.07 | 21.97 | 55.36 | ||||||||||
1978 | 16.39 | c | 21.14 | 38.74 | 54.73 | 72.50 | a | 78.73 | 79.84 | 81.10 | 77.20 | 60.65 | 39.60 | 22.45 | 53.59 | |||||||||||
1979 | 10.97 | 19.04 | a | 34.13 | 52.67 | 66.84 | 78.33 | 81.58 | 76.06 | 73.07 | 58.23 | 38.87 | 33.81 | 51.97 | ||||||||||||
1980 | 24.81 | 24.17 | 36.39 | 61.03 | 74.58 | 79.13 | 87.87 | 80.45 | 72.57 | 55.42 | 46.47 | 30.10 | 56.08 | |||||||||||||
1981 | 30.65 | 33.39 | 50.29 | 61.87 | 69.48 | 78.79 | a | 83.06 | 78.81 | 71.07 | 56.32 | 46.97 | 25.48 | 57.18 | ||||||||||||
1982 | 12.42 | 25.46 | 37.00 | 54.63 | 72.35 | 76.00 | 84.45 | 81.03 | 69.63 | 59.13 | ----- | z | 33.87 | 55.09 | a | |||||||||||
1983 | 27.77 | a | 31.50 | 40.58 | 51.17 | 66.40 | a | 77.60 | 86.42 | 86.90 | 72.00 | b | 58.26 | 40.41 | a | 11.83 | a | 54.24 | ||||||||
1984 | 22.96 | c | 33.97 | 33.77 | 57.14 | b | 68.61 | 79.30 | 81.83 | a | 83.32 | 69.61 | b | 59.81 | 44.07 | 27.42 | 55.15 | |||||||||
1985 | 22.17 | a | 26.29 | 45.39 | 65.37 | 75.47 | a | 76.30 | 84.13 | 76.33 | a | 69.53 | 58.45 | 32.72 | a | 19.48 | 54.30 | |||||||||
1986 | 26.17 | a | 23.46 | 43.45 | 60.79 | a | 70.97 | 81.67 | 83.42 | 77.35 | 68.93 | 60.26 | 37.33 | 32.10 | 55.49 | |||||||||||
1987 | 31.10 | 42.89 | 49.06 | 69.03 | 77.19 | 87.03 | 85.97 | 78.97 | 74.57 | 56.58 | 46.47 | 31.48 | 60.86 | |||||||||||||
1988 | 20.13 | 23.00 | a | 43.90 | 64.03 | 82.42 | 89.24 | a | 90.74 | 85.83 | a | 75.60 | 56.45 | 40.67 | 30.19 | 58.52 | ||||||||||
1989 | 32.77 | 22.25 | 35.39 | 59.37 | 71.47 | a | 79.93 | 86.10 | 81.23 | 74.10 | 64.87 | a | 37.23 | 19.03 | a | 55.31 | ||||||||||
1990 | 35.26 | 34.61 | 44.71 | 59.90 | 66.68 | 78.80 | 80.00 | 77.48 | 73.43 | 59.74 | 46.76 | a | 24.81 | 56.85 | ||||||||||||
1991 | 20.61 | 33.57 | 42.29 | 60.37 | 68.65 | 81.17 | 79.65 | 78.23 | 67.70 | 57.53 | a | 30.60 | 28.39 | 54.06 | ||||||||||||
1992 | 30.06 | 32.45 | 40.84 | 51.93 | 72.10 | 75.43 | 73.00 | a | 73.42 | 70.41 | a | 57.68 | 34.11 | b | 27.43 | a | 53.24 | |||||||||
1993 | 21.35 | 22.93 | 35.45 | 54.33 | 66.90 | a | 74.25 | b | 77.71 | 78.87 | a | 65.53 | 57.83 | a | 38.40 | 28.16 | 51.81 | |||||||||
1994 | 12.32 | c | 20.64 | 43.26 | 60.17 | f | 74.39 | 79.40 | 78.57 | a | 75.55 | 73.07 | 60.19 | 45.17 | 30.52 | 53.92 | a | |||||||||
1995 | 23.66 | b | 27.54 | 44.17 | a | 52.15 | d | 67.97 | 79.03 | 81.84 | 82.97 | 70.70 | 56.61 | 33.11 | b | 26.80 | a | 53.88 | ||||||||
1996 | 19.59 | b | 27.00 | b | 33.77 | a | 51.52 | c | 63.46 | c | 78.28 | a | 78.84 | 80.27 | a | 70.93 | 60.69 | b | 32.36 | b | 20.85 | e | 51.46 | |||
1997 | 19.31 | b | 27.00 | a | 37.52 | b | 54.03 | a | 65.69 | e | 80.40 | 78.94 | 77.58 | 72.90 | a | 61.39 | 34.04 | d | 32.87 | 53.47 | ||||||
1998 | 23.72 | b | 36.54 | 39.42 | 62.21 | a | 75.38 | b | 74.97 | 81.16 | 79.77 | 78.07 | 60.26 | 45.96 | b | 35.55 | 57.75 | |||||||||
1999 | 21.41 | d | 35.52 | c | 43.57 | a | 57.76 | a | 69.97 | 76.70 | 85.23 | 78.00 | 71.40 | 60.90 | a | 52.71 | b | 34.21 | c | 57.28 | ||||||
2000 | 23.77 | a | 35.69 | 52.06 | 58.00 | 70.17 | a | 76.59 | c | 80.17 | a | 80.06 | 74.59 | a | 62.81 | 36.23 | 13.33 | d | 55.29 | |||||||
2001 | 26.63 | d | 21.15 | b | 33.29 | 56.63 | 67.90 | 77.14 | a | 84.48 | 81.97 | 70.07 | 60.39 | 56.90 | 33.39 | 55.83 | ||||||||||
2002 | 31.45 | 36.15 | b | 31.90 | b | 56.12 | d | 65.83 | a | 80.57 | b | 83.35 | 77.17 | a | 71.50 | b | 50.61 | 40.59 | a | 34.48 | 54.98 | |||||
2003 | 24.19 | 25.16 | c | 40.47 | a | 57.75 | b | 66.61 | 76.30 | 79.97 | 82.61 | 72.03 | a | 60.45 | 39.79 | a | 31.73 | a | 54.76 | |||||||
2004 | 19.69 | b | 28.81 | b | 44.71 | 62.59 | c | 66.28 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.42 | g | |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | 33.93 | b | 27.70 | a | 40.43 | a | 62.53 | 69.68 | 81.09 | h | 86.86 | i | 79.00 | a | 65.26 | g | 58.00 | g | 49.41 | m | 34.57 | h | 52.21 | f | ||
2007 | 25.04 | f | 21.87 | e | 40.94 | o | 51.08 | f | 73.10 | b | 78.81 | i | 83.42 | g | 75.54 | g | 73.48 | c | 61.52 | f | 41.38 | a | 22.93 | a | 46.55 | g |
2008 | 18.32 | i | 22.07 | a | 34.03 | 51.10 | 66.58 | 75.37 | 81.10 | 79.16 | 72.17 | 57.65 | 40.50 | 23.19 | 54.81 | a | ||||||||||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.96 | b | 76.33 | d | 76.86 | b | 75.31 | a | 48.59 | b | 50.30 | 23.00 | 60.91 | e | ||
2010 | 17.68 | 23.29 | 46.10 | 65.13 | 69.29 | 75.04 | e | 82.84 | 83.13 | 68.23 | 63.87 | 41.80 | 20.65 | 54.75 | ||||||||||||
2011 | 16.90 | 24.18 | 34.57 | a | 53.64 | b | 65.19 | 75.93 | 85.13 | 79.90 | 70.70 | 63.39 | 46.07 | 32.61 | 54.02 | |||||||||||
2012 | 30.29 | 33.28 | 56.16 | 58.20 | 72.58 | 79.53 | 87.26 | 79.16 | 73.80 | 55.71 | 45.23 | 29.71 | 58.41 | |||||||||||||
2013 | 24.71 | 24.43 | 31.23 | 45.53 | 64.71 | 75.13 | 81.48 | 80.45 | 75.87 | 57.00 | 39.47 | 19.58 | 51.63 | |||||||||||||
2014 | 17.87 | a | 15.64 | 31.26 | 51.23 | 65.68 | 76.63 | 78.52 | 80.19 | 71.83 | 58.68 | 32.60 | 28.65 | 50.73 | ||||||||||||
2015 | 24.52 | 18.89 | 43.00 | 58.67 | 67.29 | 77.00 | 80.10 | 77.26 | 76.30 | 61.48 | 48.37 | 34.23 | 55.59 | |||||||||||||
2016 | 21.48 | 30.41 | 47.42 | 56.57 | 68.90 | 78.73 | 80.87 | 79.68 | 72.97 | 60.68 | 51.63 | 25.71 | 56.25 | |||||||||||||
2017 | 25.52 | 38.75 | 40.06 | 57.47 | 65.48 | 79.07 | 82.06 | 75.23 | 74.77 | 59.45 | 40.53 | 26.29 | 55.39 | |||||||||||||
2018 | 21.77 | 22.11 | 38.06 | 43.43 | 76.13 | 78.20 | 81.03 | 79.39 | 72.70 | 52.19 | 33.20 | 29.90 | 52.34 | |||||||||||||
2019 | 20.71 | 18.00 | 34.71 | 53.60 | 61.94 | 77.03 | 80.97 | 76.90 | 73.03 | 53.23 | 35.40 | 29.00 | 51.21 | |||||||||||||
2020 | 25.87 | 27.66 | 42.71 | 53.27 | 66.35 | 81.83 | 83.42 | 80.52 | 69.13 | 50.58 | 46.93 | a | 32.65 | 55.08 | ||||||||||||
2021 | 27.68 | 17.00 | 47.71 | 54.83 | 67.87 | 85.27 | 82.77 | 80.94 | 75.37 | 64.00 | 44.60 | 31.55 | 56.63 | |||||||||||||
2022 | 19.13 | 22.96 | 38.42 | 47.10 | 68.58 | 80.17 | 83.06 | 78.94 | 74.30 | 61.00 | 42.60 | 21.94 | 53.18 | |||||||||||||
2023 | 24.97 | 27.93 | 34.58 | 52.30 | 72.13 | 82.43 | 82.23 | 81.13 | 76.13 | 59.32 | 46.17 | 39.39 | 56.56 | |||||||||||||
2024 | 23.55 | 41.07 | 46.32 | 57.04 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.98 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.53 | 27.37 | 39.35 | 56.26 | 69.44 | 78.53 | 82.23 | 79.71 | 71.60 | 59.32 | 41.47 | 27.40 | 54.62 | |||||||||||||
S.D. | 5.37 | 5.99 | 6.09 | 5.39 | 3.86 | 3.03 | 3.12 | 2.55 | 2.90 | 4.16 | 5.51 | 5.39 | 2.01 | |||||||||||||
SKEW | 0.05 | 0.59 | 0.34 | -0.17 | 0.71 | 0.73 | 0.03 | 0.34 | -0.66 | -0.05 | 0.16 | -0.40 | 0.15 | |||||||||||||
MAX | 35.26 | 42.89 | 56.16 | 69.03 | 82.42 | 89.24 | 90.74 | 86.90 | 78.07 | 70.87 | 56.90 | 39.39 | 60.86 | |||||||||||||
MIN | 10.97 | 15.64 | 27.13 | 43.43 | 61.94 | 71.43 | 73.00 | 73.42 | 60.17 | 48.59 | 30.60 | 11.83 | 49.92 | |||||||||||||
YRS | 72 | 74 | 73 | 71 | 73 | 71 | 71 | 72 | 72 | 71 | 71 | 72 | 67 |