YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.93 | c | 81.19 | 85.81 | 77.00 | 67.77 | 48.77 | 27.45 | 66.56 | e | ||||||
1959 | 22.32 | 26.71 | 44.90 | 63.21 | b | 74.45 | 84.70 | 87.23 | 87.55 | 74.53 | 54.94 | 35.68 | b | 37.74 | 57.83 | |||||||||||
1960 | 25.77 | 26.38 | 28.94 | 58.90 | 70.68 | 78.40 | 84.23 | 83.94 | 74.47 | 64.39 | 47.53 | 30.90 | 56.21 | |||||||||||||
1961 | 26.65 | 34.00 | 41.77 | 51.43 | 68.65 | 82.40 | 81.97 | 83.87 | ----- | z | 65.52 | 42.67 | 28.86 | i | 57.89 | b | ||||||||||
1962 | 21.84 | 24.18 | 32.58 | ----- | z | 74.93 | b | 83.33 | l | 80.16 | 82.32 | 70.70 | 64.35 | 48.97 | 32.35 | 53.24 | b | |||||||||
1963 | 16.52 | 28.61 | ----- | z | 61.67 | 70.39 | 83.70 | 82.61 | 81.00 | 76.10 | 72.77 | 49.90 | 22.19 | 58.68 | a | |||||||||||
1964 | 34.32 | 39.28 | 37.42 | 59.67 | 75.00 | 83.70 | 88.13 | ----- | z | 72.47 | 63.23 | a | 45.50 | 24.48 | 56.65 | a | ||||||||||
1965 | 22.16 | 25.18 | 27.00 | 53.17 | 73.00 | 80.47 | 84.94 | 81.71 | 63.00 | 65.00 | 44.10 | 36.84 | 54.71 | |||||||||||||
1966 | 14.39 | 26.93 | 48.65 | 50.77 | 69.13 | 81.13 | 87.84 | 79.45 | 73.40 | 63.35 | 40.33 | 27.71 | 55.26 | |||||||||||||
1967 | 27.06 | 25.75 | 45.35 | 58.53 | 67.10 | 78.07 | 82.52 | 80.52 | 74.13 | 61.26 | 43.67 | 32.39 | 56.36 | |||||||||||||
1968 | 26.00 | 26.93 | 56.00 | 63.53 | 67.35 | 82.67 | 82.84 | 81.71 | 72.13 | 62.94 | 41.77 | 24.84 | 57.39 | |||||||||||||
1969 | 16.48 | 26.93 | 30.68 | 59.27 | 73.10 | 73.63 | 83.29 | 84.19 | 74.50 | 57.10 | 43.03 | 27.71 | 54.16 | |||||||||||||
1970 | 14.87 | 28.46 | 33.45 | 58.07 | 73.74 | 84.43 | 86.06 | 82.61 | 74.00 | 58.94 | 40.63 | 27.35 | 55.22 | |||||||||||||
1971 | 17.97 | 27.43 | 37.03 | 61.57 | 70.19 | 83.37 | 80.94 | 84.29 | 75.13 | 64.42 | 42.43 | 27.13 | 55.99 | |||||||||||||
1972 | 18.55 | 22.66 | 39.74 | 54.60 | 73.19 | 79.93 | 81.23 | 81.16 | 71.60 | 57.93 | a | 38.23 | 20.84 | 53.31 | ||||||||||||
1973 | 27.23 | 32.11 | 47.74 | 56.23 | 68.94 | 83.23 | 84.06 | 84.94 | 72.03 | 66.81 | 44.27 | 25.29 | 57.74 | |||||||||||||
1974 | 23.16 | 31.21 | 42.26 | 60.13 | 67.23 | 80.23 | 88.61 | 79.17 | a | 72.73 | 64.71 | 43.20 | 30.23 | 56.91 | ||||||||||||
1975 | 25.65 | 24.54 | 33.13 | 46.87 | 74.90 | 79.07 | a | 88.35 | 84.06 | 70.13 | 68.00 | 46.07 | 28.97 | 55.81 | ||||||||||||
1976 | 26.19 | 39.59 | 43.45 | 64.83 | 72.23 | 85.03 | 89.35 | 85.48 | 77.53 | 57.03 | 39.13 | 26.87 | 58.89 | |||||||||||||
1977 | 12.90 | 36.00 | 47.97 | 67.20 | 80.23 | a | 83.03 | 86.84 | 78.42 | 74.40 | 60.29 | 40.87 | 24.13 | 57.69 | ||||||||||||
1978 | 14.84 | 20.54 | 41.32 | 55.63 | 73.27 | a | 81.63 | 82.77 | 83.39 | 80.33 | 63.42 | 40.73 | 24.00 | 55.16 | ||||||||||||
1979 | 9.74 | 17.68 | 34.06 | 50.87 | 68.13 | 81.43 | 83.32 | 78.81 | 75.40 | 60.45 | 41.00 | 35.48 | 53.03 | |||||||||||||
1980 | 27.29 | 25.34 | 38.77 | 62.47 | 75.68 | 83.31 | a | 88.23 | 82.35 | 77.13 | 58.61 | 50.07 | 30.71 | 58.33 | ||||||||||||
1981 | 32.29 | 36.46 | 52.35 | 66.03 | 72.26 | 81.73 | 83.90 | 79.39 | ----- | z | 57.84 | 48.63 | 25.94 | 57.89 | a | |||||||||||
1982 | 13.34 | b | 26.54 | 39.39 | 56.14 | a | 72.33 | a | 76.53 | 86.13 | 81.32 | 72.67 | 61.29 | 39.30 | 34.03 | 54.92 | ||||||||||
1983 | 27.77 | 32.41 | a | 39.26 | 51.90 | 69.00 | b | 79.73 | 89.55 | b | 89.29 | 76.00 | 60.35 | 40.57 | 11.53 | a | 55.61 | |||||||||
1984 | 23.32 | 33.66 | 32.80 | a | 56.73 | 69.42 | 80.17 | 83.65 | n | 86.12 | n | 71.85 | j | 64.70 | h | 47.81 | i | 30.78 | h | 49.35 | f | |||||
1985 | 24.39 | h | 27.70 | e | 45.04 | h | 67.21 | k | 76.96 | h | 76.88 | f | 85.57 | h | 79.04 | e | 69.04 | g | 60.70 | h | 32.48 | g | 18.79 | g | 53.37 | j |
1986 | 29.92 | f | 24.38 | g | 50.30 | k | 60.82 | m | 73.43 | h | 84.00 | h | 84.37 | d | ----- | z | 72.64 | h | ----- | z | 40.27 | h | 35.09 | i | 84.37 | k |
1987 | 33.58 | e | 45.10 | g | 51.38 | j | 68.30 | g | 81.21 | g | 85.44 | c | 87.39 | c | ----- | z | 74.61 | g | 55.61 | h | 46.61 | g | 32.32 | f | 68.80 | i |
1988 | 20.38 | g | 24.52 | f | 44.80 | f | 61.26 | g | 83.31 | e | 92.30 | g | 91.69 | e | 86.17 | h | 77.04 | f | 58.95 | i | 44.63 | k | 33.50 | k | 87.50 | j |
1989 | 36.70 | h | 24.18 | k | 38.05 | i | 58.35 | d | 72.10 | b | 81.45 | a | 88.03 | a | 83.81 | 73.43 | 64.06 | 39.07 | a | 19.90 | 64.47 | c | ||||
1990 | 37.59 | b | 35.36 | 45.00 | 59.47 | 68.03 | 82.67 | 81.29 | 81.33 | a | 79.03 | 61.52 | 46.93 | 25.10 | 58.61 | |||||||||||
1991 | 19.80 | a | 35.92 | b | 42.46 | c | 58.70 | 68.81 | 82.63 | 82.55 | 80.77 | 71.45 | a | 61.70 | a | 29.86 | b | 30.37 | a | 55.42 | ||||||
1992 | 30.67 | a | 33.17 | 41.97 | 50.47 | 72.74 | 77.21 | a | 74.30 | a | 75.80 | a | 71.93 | b | 58.77 | 35.33 | 26.19 | 54.05 | ||||||||
1993 | 21.90 | a | 21.81 | b | 34.74 | 51.77 | 65.97 | 75.21 | a | 77.97 | a | 79.50 | a | 66.31 | a | 57.34 | b | 38.57 | 26.84 | 51.49 | ||||||
1994 | 12.39 | 19.46 | 41.60 | a | 58.17 | a | 73.73 | a | 79.97 | a | 78.53 | a | 76.81 | 74.07 | 62.61 | 45.40 | 30.61 | 54.45 | ||||||||
1995 | 24.65 | 30.18 | 41.07 | a | 49.60 | 66.29 | 80.00 | 82.84 | 84.19 | ----- | z | 58.71 | 35.50 | 27.81 | 52.80 | a | ||||||||||
1996 | 16.42 | 26.79 | a | 34.63 | a | 51.00 | 62.23 | 78.66 | a | 80.16 | 78.67 | a | 70.07 | 61.72 | b | 31.60 | 19.19 | 50.93 | ||||||||
1997 | 18.77 | a | 28.75 | 39.10 | a | 52.75 | b | 63.87 | a | 83.25 | b | 80.23 | a | 77.83 | a | 75.00 | 63.00 | 33.20 | 31.73 | a | 53.96 | |||||
1998 | 23.58 | 36.75 | 35.10 | 59.31 | a | 76.07 | a | 75.00 | 81.68 | 80.28 | b | 79.34 | a | 60.50 | c | 45.62 | a | 35.27 | a | 57.37 | ||||||
1999 | 18.57 | a | 34.96 | a | 42.87 | a | 55.53 | 69.03 | 77.15 | c | 85.67 | a | 80.10 | 73.83 | 61.57 | a | 54.03 | 36.23 | 57.46 | |||||||
2000 | 25.26 | 36.34 | 50.87 | 57.40 | 71.61 | 76.83 | 80.17 | a | 80.29 | 74.00 | a | 61.94 | 35.53 | 13.94 | 55.35 | |||||||||||
2001 | 26.03 | 18.89 | 31.10 | 54.66 | a | 69.35 | 78.81 | c | 83.93 | a | 80.48 | 69.86 | b | 59.83 | a | 56.55 | a | 33.52 | b | 55.25 | ||||||
2002 | 32.67 | a | 35.21 | 30.23 | a | 53.93 | 64.26 | 78.87 | 84.06 | 75.29 | 73.20 | 50.29 | 41.62 | a | 35.19 | 54.57 | ||||||||||
2003 | 25.52 | 25.86 | 40.52 | 57.59 | a | 65.68 | 76.00 | 82.06 | 82.93 | b | 71.00 | 61.23 | a | 39.13 | 30.06 | 54.80 | ||||||||||
2004 | 21.32 | 24.69 | 44.48 | 61.93 | 67.23 | 72.37 | 76.87 | 72.26 | 74.33 | 57.66 | b | 46.87 | 31.65 | 54.30 | ||||||||||||
2005 | 21.57 | a | 35.31 | b | 37.35 | 58.83 | a | 62.12 | o | 82.47 | 84.06 | 79.95 | j | 75.30 | 59.79 | b | 44.81 | d | 22.76 | b | 52.22 | b | ||||
2006 | 31.23 | 26.07 | a | 37.65 | 61.86 | a | 70.19 | 77.55 | j | 84.42 | e | 80.87 | 69.24 | a | 57.29 | 46.00 | 35.16 | 54.54 | a | |||||||
2007 | 25.00 | 19.61 | 43.77 | 53.82 | b | 74.20 | a | 82.17 | 85.20 | a | 79.67 | a | 75.57 | 62.87 | a | 44.28 | a | 23.86 | i | 58.74 | a | |||||
2008 | 18.36 | i | 21.59 | 35.25 | c | 51.07 | 66.52 | 77.10 | 83.26 | 81.10 | 73.14 | a | 60.03 | 39.93 | a | 22.35 | 55.58 | a | ||||||||
2009 | 18.13 | 28.64 | 38.35 | 55.50 | 70.26 | 75.63 | 77.48 | 77.10 | 76.07 | a | 48.87 | 50.03 | 21.27 | a | 53.11 | |||||||||||
2010 | 14.65 | 20.11 | 42.13 | 65.23 | 69.71 | 76.83 | 83.61 | 85.45 | 69.57 | ----- | z | 41.73 | 21.13 | 53.65 | a | |||||||||||
2011 | 17.61 | 23.74 | a | 34.68 | 52.20 | 65.52 | 77.90 | 86.84 | 82.42 | 71.93 | 67.55 | 50.30 | 35.55 | 55.52 | ||||||||||||
2012 | 31.65 | 38.28 | 60.35 | 63.83 | a | 75.90 | 82.90 | 89.52 | 82.35 | 77.87 | 57.94 | 47.93 | 30.16 | 61.56 | ||||||||||||
2013 | 26.90 | 27.21 | 33.97 | 49.37 | 67.21 | b | 77.87 | 84.06 | 81.20 | a | 78.96 | b | 59.48 | 41.68 | b | 21.13 | 54.09 | |||||||||
2014 | 21.13 | 18.54 | 34.74 | 54.33 | 68.03 | 78.23 | 79.68 | 80.39 | 72.70 | 59.87 | 34.43 | 28.45 | 52.54 | |||||||||||||
2015 | 25.87 | 21.07 | 45.45 | 60.27 | 68.48 | 77.60 | 82.10 | 78.26 | 77.63 | 62.10 | 48.77 | 32.52 | 56.68 | |||||||||||||
2016 | 22.13 | 30.66 | 47.45 | 57.87 | 69.58 | 82.70 | 84.74 | 82.61 | 75.27 | 62.00 | 52.50 | 27.13 | 57.89 | |||||||||||||
2017 | 27.26 | 41.86 | 40.84 | 57.13 | 67.55 | 81.73 | 83.61 | 75.52 | 76.07 | 59.87 | 41.53 | 28.48 | 56.79 | |||||||||||||
2018 | 23.35 | 21.29 | 35.39 | 41.77 | 75.77 | 78.83 | 81.84 | 80.16 | 73.93 | 53.61 | 33.93 | 28.70 | a | 52.38 | ||||||||||||
2019 | 20.16 | 16.11 | 33.90 | a | 55.27 | 62.81 | 78.93 | 82.13 | 78.81 | 75.70 | 54.65 | 38.00 | 29.23 | 52.14 | ||||||||||||
2020 | 25.42 | 28.48 | 43.97 | 56.17 | 67.16 | 84.77 | 85.10 | 83.03 | 72.37 | 52.74 | 49.23 | 33.83 | a | 56.86 | ||||||||||||
2021 | 30.58 | 16.75 | 49.77 | 57.57 | 69.90 | 86.73 | 83.45 | 83.06 | 78.83 | 65.58 | 47.87 | 33.97 | 58.67 | |||||||||||||
2022 | 20.48 | b | 25.89 | 42.00 | 51.10 | 73.48 | 84.50 | 85.55 | 80.23 | 76.37 | 62.00 | 43.70 | 21.81 | 55.59 | ||||||||||||
2023 | 24.00 | 26.96 | 32.58 | 54.33 | 73.61 | 83.53 | 81.77 | 82.19 | 77.87 | 60.52 | 48.27 | 39.81 | 57.12 | |||||||||||||
2024 | 23.58 | 42.24 | 47.55 | 56.87 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.79 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.08 | 28.19 | 40.15 | 56.63 | 70.50 | 80.35 | 83.73 | 81.18 | 74.01 | 60.87 | 43.06 | 28.21 | 55.61 | |||||||||||||
S.D. | 5.99 | 6.50 | 6.75 | 5.02 | 4.03 | 3.19 | 3.36 | 3.04 | 3.20 | 4.22 | 5.62 | 5.77 | 2.14 | |||||||||||||
SKEW | 0.03 | 0.23 | 0.52 | -0.21 | 0.49 | -0.27 | -0.12 | -0.15 | -0.67 | -0.26 | -0.09 | -0.45 | 0.10 | |||||||||||||
MAX | 37.59 | 42.24 | 60.35 | 67.20 | 83.31 | 86.73 | 91.69 | 89.29 | 80.33 | 72.77 | 56.55 | 39.81 | 61.56 | |||||||||||||
MIN | 9.74 | 16.11 | 27.00 | 41.77 | 62.23 | 72.37 | 74.30 | 72.26 | 63.00 | 48.87 | 29.86 | 11.53 | 50.93 | |||||||||||||
YRS | 61 | 62 | 60 | 60 | 61 | 61 | 64 | 60 | 58 | 60 | 61 | 59 | 48 |