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 | ----- | z | ----- | z | ----- | z | ----- | z | 59.22 | m | 40.90 | 19.65 | 30.27 | j | ||
1959 | 16.37 | a | 25.18 | 40.77 | 55.67 | 68.10 | 78.80 | 82.52 | 82.58 | e | 69.34 | a | 48.84 | 29.20 | 32.84 | 52.52 | ||||||||||
1960 | 20.39 | 25.28 | 30.84 | 52.67 | 67.45 | 73.93 | 83.48 | f | 81.50 | c | 70.73 | 59.29 | 39.60 | 22.65 | 49.48 | a | ||||||||||
1961 | 18.97 | 33.82 | 44.13 | 47.10 | 66.42 | 81.70 | 80.23 | 84.83 | a | 67.67 | 59.32 | 36.87 | 21.32 | 53.53 | ||||||||||||
1962 | 15.20 | a | 20.68 | 35.87 | 51.70 | 68.94 | 75.63 | 77.90 | 79.25 | k | 65.08 | f | 60.39 | 41.50 | 25.87 | a | 47.37 | b | ||||||||
1963 | 14.65 | h | 22.32 | 43.19 | 56.30 | 65.48 | 79.90 | a | 83.38 | j | 78.84 | 70.67 | 68.32 | 44.30 | 16.48 | 54.58 | b | |||||||||
1964 | 27.16 | 31.38 | 34.84 | 55.87 | 71.87 | 74.46 | d | ----- | z | 69.18 | t | 67.59 | a | 58.26 | 41.69 | a | 18.29 | 48.14 | b | |||||||
1965 | 18.65 | 22.21 | 30.06 | 50.50 | 66.61 | 73.70 | 78.80 | a | 77.61 | 57.77 | 59.87 | 39.00 | 30.32 | 50.43 | ||||||||||||
1966 | 9.87 | 24.93 | 41.58 | 47.27 | 64.39 | 78.14 | b | 83.84 | f | 74.96 | g | 71.80 | e | 57.24 | j | 37.14 | i | 23.83 | a | 45.23 | d | |||||
1967 | 23.23 | 19.96 | 37.26 | d | 51.46 | b | 61.20 | a | 74.50 | f | 79.86 | j | 78.11 | c | 72.25 | b | 56.50 | e | 39.43 | g | 27.38 | g | 50.00 | d | ||
1968 | 20.13 | a | 23.24 | 47.93 | d | 57.48 | c | 62.91 | i | 74.57 | i | 76.82 | i | 77.77 | e | 68.09 | g | 59.29 | c | ----- | z | ----- | z | 47.64 | f | |
1969 | ----- | z | 31.76 | k | 34.48 | b | 54.59 | a | 67.84 | f | ----- | z | 79.81 | j | 82.46 | r | 69.68 | h | 48.96 | f | 37.62 | d | 28.60 | f | 42.23 | i |
1970 | 13.77 | e | 24.40 | c | 33.74 | d | 51.10 | 62.34 | b | 78.59 | a | 84.82 | c | 83.68 | l | 70.65 | g | 60.56 | m | 37.84 | e | 23.04 | h | 48.33 | d | |
1971 | 13.05 | i | 25.32 | c | 34.75 | c | 54.96 | b | 64.34 | b | 78.12 | e | 75.85 | d | 74.80 | p | 66.88 | d | 58.52 | b | 36.43 | 22.81 | 51.80 | b | ||
1972 | 17.77 | e | 18.96 | e | 34.90 | b | 48.60 | 70.61 | 75.77 | 77.71 | 77.71 | 65.83 | 52.35 | 35.24 | e | 17.87 | 49.44 | |||||||||
1973 | 24.56 | d | 28.39 | 45.67 | a | 54.32 | e | 65.19 | 76.77 | 79.42 | 79.97 | 67.50 | 61.45 | 38.31 | a | 22.26 | 53.65 | |||||||||
1974 | 18.48 | 27.61 | 37.18 | c | 55.55 | a | 60.93 | d | 75.93 | 83.55 | 74.87 | 65.10 | a | 58.45 | 39.60 | 30.06 | 52.28 | |||||||||
1975 | 21.52 | 17.21 | n | ----- | z | 47.56 | e | 72.88 | e | 76.00 | e | 83.55 | 78.61 | c | 64.87 | 60.65 | 41.90 | 23.55 | 57.11 | b | ||||||
1976 | 18.20 | a | 35.31 | 37.84 | 61.30 | 70.31 | e | 80.90 | a | 83.67 | a | 83.26 | 73.97 | 50.41 | b | 32.70 | 16.55 | b | 53.70 | |||||||
1977 | 9.48 | f | 30.00 | 45.19 | 61.83 | a | 78.77 | a | 77.93 | a | 82.50 | c | 72.23 | 66.53 | 56.87 | 41.09 | g | 25.64 | t | 63.54 | c | |||||
1978 | 14.45 | 21.68 | 40.19 | 52.88 | e | 71.96 | e | 76.85 | d | 77.60 | a | 78.23 | 71.72 | a | 58.00 | a | 37.20 | 19.77 | a | 51.71 | ||||||
1979 | 9.63 | a | 17.82 | 34.97 | b | 48.60 | 62.17 | b | 74.97 | 80.37 | d | 76.21 | b | 72.00 | q | ----- | z | ----- | z | ----- | z | 50.59 | d | |||
1980 | ----- | z | ----- | z | ----- | z | 72.44 | u | 74.00 | 76.21 | a | 83.33 | a | 77.81 | d | 66.23 | 52.07 | a | 42.52 | c | 25.52 | 62.21 | d | |||
1981 | 21.60 | k | 30.74 | a | 45.67 | a | 57.09 | h | 67.39 | 73.78 | c | 79.33 | a | 77.17 | b | 66.24 | a | 52.48 | b | 44.79 | a | 22.41 | d | 56.00 | b | |
1982 | 9.83 | a | 25.76 | k | 40.29 | x | 50.28 | a | 70.18 | c | 69.96 | b | 80.65 | 77.03 | 65.53 | 56.14 | b | 34.50 | 29.86 | i | 57.12 | c | ||||
1983 | 23.96 | g | 29.48 | e | 37.00 | h | 50.43 | b | 61.69 | e | 71.09 | g | 80.74 | l | 82.64 | i | 66.37 | k | 55.26 | h | 38.89 | k | 13.70 | h | 47.20 | i |
1984 | 21.25 | k | 35.85 | i | 34.24 | j | 57.58 | f | 63.90 | j | 73.70 | j | 79.71 | j | 80.00 | f | 62.04 | d | 56.52 | 36.60 | 21.84 | 44.25 | h | |||
1985 | 15.84 | 20.58 | b | 41.87 | 56.97 | 69.35 | 70.30 | 78.45 | 73.26 | 64.90 | 54.81 | 29.30 | 11.61 | 48.94 | ||||||||||||
1986 | 21.61 | 20.79 | 38.94 | 55.93 | 68.23 | 76.10 | 79.32 | 73.42 | 64.73 | 54.60 | a | 32.53 | 26.61 | 51.07 | ||||||||||||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.66 | a | 27.23 | a | 34.44 | j |
1988 | 15.00 | b | 19.81 | b | 35.72 | b | 55.30 | 74.87 | 79.77 | 84.32 | 77.06 | 67.14 | a | 50.86 | b | 35.52 | c | 24.66 | b | 51.67 | ||||||
1989 | 24.77 | a | 14.08 | d | 31.21 | c | 50.30 | c | 66.38 | b | 75.00 | a | 82.74 | 78.42 | 67.97 | a | 57.86 | b | 33.59 | c | 14.59 | d | 49.74 | |||
1990 | 30.03 | b | 27.65 | b | 39.32 | 53.46 | b | 64.32 | 74.60 | 77.16 | 76.94 | ----- | z | 52.26 | 41.43 | 22.45 | b | 50.88 | a | |||||||
1991 | 17.43 | c | 32.38 | b | 40.97 | b | ----- | z | ----- | z | 76.43 | 76.81 | 80.47 | a | 65.52 | a | 51.00 | a | 29.04 | b | 24.10 | a | 49.41 | b | ||
1992 | 25.20 | a | 29.59 | 38.10 | 48.73 | 70.71 | 76.63 | 71.94 | 74.65 | 67.43 | 55.84 | 31.40 | 23.04 | e | 51.10 | |||||||||||
1993 | 21.36 | c | 22.56 | a | 37.87 | 49.37 | 64.63 | a | 70.00 | a | 74.71 | 76.10 | 63.03 | 55.87 | 31.83 | a | 23.03 | a | 49.20 | |||||||
1994 | 7.55 | 16.93 | 38.81 | 52.47 | 70.13 | 76.53 | 74.97 | 73.58 | 68.17 | 56.43 | a | 41.97 | 29.68 | 50.60 | ||||||||||||
1995 | 19.71 | 22.79 | 36.93 | a | 45.80 | 65.10 | 79.31 | a | 77.45 | 77.61 | 67.40 | 53.23 | 28.70 | 21.13 | 49.60 | |||||||||||
1996 | 11.97 | 21.59 | 28.94 | 47.23 | 64.23 | 74.77 | 76.68 | 78.52 | 67.93 | 58.19 | 28.53 | 16.77 | 47.95 | |||||||||||||
1997 | 14.35 | 25.32 | 34.06 | 50.80 | 59.23 | 80.63 | 75.94 | 72.71 | 70.60 | 56.29 | 32.27 | 29.81 | 50.17 | |||||||||||||
1998 | 22.13 | 36.00 | 35.68 | 56.83 | 74.77 | 72.27 | 78.35 | 80.26 | 72.63 | 59.00 | 40.57 | 29.65 | 54.84 | |||||||||||||
1999 | 17.23 | 33.57 | 40.65 | 55.67 | 67.45 | 73.40 | 83.97 | 75.84 | 65.48 | a | 54.58 | 49.30 | 31.61 | 54.06 | ||||||||||||
2000 | 21.50 | a | 33.00 | ----- | z | 53.60 | 67.26 | 71.47 | ----- | z | 76.94 | 67.90 | 60.10 | 36.77 | 12.39 | 50.09 | b | |||||||||
2001 | 26.19 | 17.63 | a | 34.68 | 52.00 | 71.00 | a | 76.67 | 81.97 | 82.48 | ----- | z | 56.74 | 50.60 | 29.81 | 52.71 | a | |||||||||
2002 | 28.13 | 33.79 | 29.58 | 48.77 | 60.00 | 77.13 | 82.45 | 76.29 | 67.77 | 44.29 | 36.60 | 28.58 | 51.11 | |||||||||||||
2003 | 18.87 | 19.50 | 33.58 | 53.60 | 66.80 | a | 75.20 | 80.35 | ----- | z | 69.00 | 56.77 | 35.40 | 30.65 | 49.07 | a | ||||||||||
2004 | 10.47 | a | 27.97 | 39.26 | 54.53 | 59.90 | 70.57 | 77.35 | 73.13 | 73.20 | 55.26 | 43.07 | a | 26.60 | a | 50.94 | ||||||||||
2005 | 17.61 | 30.07 | ----- | z | 60.33 | 60.13 | 77.50 | 81.90 | 77.77 | 72.73 | 57.26 | 41.40 | 26.71 | 54.86 | a | |||||||||||
2006 | ----- | z | 22.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.39 | k | |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.13 | o | 58.61 | 39.40 | 18.94 | 38.98 | i | |||
2009 | 14.06 | 25.96 | 33.45 | 51.60 | 64.94 | 73.30 | 75.35 | 72.28 | b | 73.80 | 48.06 | 49.33 | 20.94 | 50.26 | ||||||||||||
2010 | 19.58 | 27.32 | 47.55 | b | 62.90 | 67.73 | a | 74.89 | b | 81.36 | f | 81.92 | g | 65.17 | 62.61 | 41.93 | a | 21.61 | 49.13 | b | ||||||
2011 | 13.19 | 25.68 | 35.35 | 50.57 | 63.65 | 73.92 | q | ----- | z | 78.83 | b | 69.57 | 62.03 | 41.14 | a | 32.87 | 47.29 | b | ||||||||
2012 | 27.90 | 32.41 | 47.37 | l | ----- | z | 68.19 | 76.82 | h | 83.90 | j | 75.29 | q | 68.62 | q | 51.81 | j | 41.80 | 25.42 | 39.15 | g | |||||
2013 | 21.00 | x | 23.57 | 29.76 | f | 41.66 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.61 | j | |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | 65.10 | 76.03 | 77.77 | 79.42 | 69.59 | a | 57.06 | 30.57 | 28.10 | 60.45 | d | |||||||
2015 | 20.84 | 14.43 | 40.77 | 56.70 | 65.28 | f | 75.90 | a | 81.74 | d | 74.82 | i | 76.34 | a | 57.40 | a | 49.57 | g | 30.60 | u | 53.02 | d | ||||
2016 | 20.32 | 30.48 | 44.19 | 52.00 | 68.90 | 74.93 | 79.77 | 79.87 | a | 69.47 | 59.19 | 50.18 | b | ----- | z | 57.21 | a | |||||||||
2017 | 23.37 | a | 31.89 | 38.00 | 58.05 | k | 65.17 | a | 76.17 | 80.94 | ----- | z | 72.00 | e | 56.06 | 31.59 | h | 20.50 | a | 51.57 | c | |||||
2018 | 19.55 | 20.89 | 37.71 | 43.23 | 70.83 | h | ----- | z | ----- | z | 76.55 | 66.83 | 47.58 | 38.80 | y | 27.03 | 42.42 | d | ||||||||
2019 | 15.29 | 16.07 | 33.13 | 41.67 | o | 60.90 | 76.17 | 80.33 | v | 71.58 | s | 69.47 | 55.54 | e | ----- | z | ----- | z | 46.65 | e | ||||||
2020 | 22.66 | b | 26.79 | 40.00 | c | 51.93 | 66.35 | 78.80 | 80.16 | 79.16 | 65.73 | 48.30 | a | 43.23 | 28.32 | 52.62 | ||||||||||
2021 | 27.90 | 16.25 | 44.58 | 52.20 | 71.03 | 82.07 | 83.68 | 82.23 | 74.23 | 60.97 | 40.10 | 26.93 | a | 55.18 | ||||||||||||
2022 | 15.39 | 16.14 | 35.48 | 43.43 | 63.83 | a | 76.87 | 79.45 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.23 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.90 | 24.99 | 37.95 | 52.42 | 66.86 | 76.03 | 79.72 | 77.68 | 68.29 | 56.20 | 38.38 | 23.90 | 51.45 | |||||||||||||
S.D. | 5.34 | 5.78 | 4.70 | 4.53 | 4.31 | 2.85 | 3.05 | 3.01 | 3.52 | 4.35 | 5.61 | 5.18 | 1.93 | |||||||||||||
SKEW | -0.00 | 0.03 | 0.23 | 0.00 | 0.35 | -0.15 | -0.26 | 0.13 | -0.12 | -0.37 | 0.12 | -0.33 | 0.28 | |||||||||||||
MAX | 30.03 | 36.00 | 47.93 | 62.90 | 78.77 | 82.07 | 84.82 | 84.83 | 76.34 | 68.32 | 50.60 | 32.87 | 55.18 | |||||||||||||
MIN | 7.55 | 14.08 | 28.94 | 41.66 | 59.23 | 69.96 | 71.94 | 72.23 | 57.77 | 44.29 | 28.53 | 11.61 | 47.95 | |||||||||||||
YRS | 50 | 55 | 50 | 52 | 53 | 51 | 44 | 44 | 49 | 53 | 51 | 50 | 25 |