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 | 35.59 | n | 21.87 | 0.00 | 10.93 | j | ||
1959 | -7.47 | a | -0.50 | 17.71 | 29.23 | 43.61 | 52.57 | 56.52 | 55.88 | f | 45.93 | a | 32.27 | a | 11.80 | 15.06 | 26.98 | a | ||||||||
1960 | -0.29 | 0.86 | 5.65 | 30.13 | 40.32 | 48.87 | 55.00 | f | 56.00 | d | 45.80 | 34.06 | 22.20 | 2.87 | 26.04 | a | ||||||||||
1961 | -3.84 | 10.25 | 22.77 | 25.23 | 35.77 | 48.90 | 54.55 | 54.97 | a | 45.60 | 35.06 | 20.77 | 4.16 | 29.52 | ||||||||||||
1962 | -6.90 | a | -0.93 | 18.39 | 25.80 | 41.84 | 49.47 | 52.42 | 51.21 | l | 40.61 | g | 35.03 | a | 23.52 | a | 5.17 | a | 24.38 | b | ||||||
1963 | -8.06 | -2.68 | 19.60 | a | 29.53 | 40.10 | 53.21 | a | 54.85 | k | 53.19 | 47.77 | 42.74 | 24.73 | -1.74 | 27.13 | a | |||||||||
1964 | 5.06 | 4.14 | 9.32 | 29.73 | 42.81 | 46.21 | f | ----- | z | ----- | z | 40.90 | j | 33.93 | a | 23.53 | -1.03 | 18.44 | d | |||||||
1965 | -8.45 | -4.39 | 3.03 | 30.83 | 43.19 | 49.03 | 54.17 | b | 53.42 | 40.57 | 36.48 | 20.63 | 14.90 | 27.79 | ||||||||||||
1966 | -13.17 | a | 0.21 | 20.90 | a | 28.63 | 38.03 | 53.32 | b | 57.45 | i | 52.96 | f | 44.16 | e | 33.55 | i | 17.05 | i | 6.23 | a | 22.29 | d | |||
1967 | 1.13 | -7.93 | 13.08 | e | 29.71 | b | 35.27 | a | 51.04 | g | 56.43 | j | 53.68 | c | 45.25 | b | 35.54 | e | 22.22 | g | 9.54 | g | 25.72 | d | ||
1968 | -0.67 | a | -1.93 | a | 22.44 | d | 34.25 | b | 40.86 | i | 52.19 | i | 54.29 | j | 53.54 | e | 48.13 | g | 40.50 | c | ----- | z | ----- | z | 24.69 | f |
1969 | ----- | z | 8.72 | j | 9.90 | b | 32.17 | a | 42.48 | f | ----- | z | 54.11 | l | 53.92 | r | 45.00 | h | 31.96 | f | 21.27 | d | 11.88 | f | 21.11 | i |
1970 | -10.46 | e | -3.08 | c | 6.79 | c | 28.50 | 39.79 | b | 53.17 | a | 57.75 | c | 52.70 | k | 42.70 | g | 36.05 | k | 20.44 | e | 0.87 | h | 24.11 | d | |
1971 | -13.09 | i | -0.52 | c | 9.25 | c | 31.43 | b | 38.28 | b | 54.92 | e | 52.00 | d | 48.20 | p | 43.78 | c | 39.03 | a | 22.03 | a | 4.26 | 29.45 | b | |
1972 | -10.76 | b | -6.67 | e | 9.79 | b | 27.00 | 45.87 | 48.53 | 53.97 | 54.55 | 43.47 | 32.23 | 24.00 | e | 0.13 | 26.84 | |||||||||
1973 | 3.67 | d | 6.86 | 26.80 | a | 29.36 | e | 39.90 | 52.23 | 55.94 | 57.32 | 45.27 | 41.19 | 22.69 | a | 6.52 | 32.31 | |||||||||
1974 | -2.29 | 1.61 | 16.14 | c | 30.10 | 38.61 | c | 50.20 | 58.61 | 51.71 | 39.57 | 35.16 | 25.40 | 13.71 | 29.88 | |||||||||||
1975 | 0.84 | -5.79 | n | ----- | z | 30.44 | e | 45.78 | d | 52.65 | d | 60.68 | 53.66 | b | 43.63 | 37.52 | 20.73 | 5.35 | 35.13 | b | ||||||
1976 | -4.52 | 12.03 | 15.19 | 33.57 | 39.34 | b | 52.77 | 54.83 | b | 52.77 | 41.93 | 25.86 | b | 11.82 | b | -5.93 | a | 27.47 | ||||||||
1977 | -13.50 | g | 7.07 | 22.17 | b | 34.79 | a | 49.87 | a | 52.93 | 58.20 | a | 49.74 | 47.07 | 34.97 | 26.43 | g | 11.62 | r | 39.65 | c | |||||
1978 | -5.35 | -2.71 | 14.35 | 28.40 | e | 42.89 | d | 51.37 | c | 56.40 | a | 55.52 | 49.83 | 35.94 | 17.17 | -1.80 | a | 28.50 | ||||||||
1979 | -12.16 | -5.14 | 15.86 | b | 26.73 | 38.93 | c | 49.03 | 55.82 | c | 51.34 | b | 46.30 | 32.52 | 20.33 | 8.20 | f | 29.05 | a | |||||||
1980 | 0.12 | f | ----- | z | ----- | z | 30.50 | 42.58 | 49.63 | 55.32 | 54.24 | b | 44.30 | 31.13 | 23.67 | c | 4.19 | 37.29 | c | |||||||
1981 | -3.95 | k | 9.19 | a | 20.17 | a | 32.71 | i | 40.19 | 50.42 | d | 55.73 | a | 54.69 | b | 43.93 | a | 33.34 | b | 26.50 | 6.75 | c | 34.09 | b | ||
1982 | -15.10 | a | 7.41 | k | ----- | z | 26.17 | 45.00 | d | 44.89 | b | 56.23 | a | 50.31 | b | 43.83 | a | 36.59 | d | 15.72 | a | 14.70 | k | 33.74 | c | |
1983 | -1.95 | j | 8.61 | e | 20.95 | j | 29.30 | c | 36.04 | g | 48.86 | h | 62.00 | n | 61.18 | i | 43.94 | m | 36.52 | j | 27.10 | j | -10.29 | j | 18.95 | j |
1984 | -5.32 | l | 13.45 | i | 8.65 | k | 31.33 | f | 39.42 | l | 55.68 | k | 54.25 | k | 58.67 | g | 41.64 | e | 40.52 | b | 19.64 | b | 1.59 | b | 25.85 | h |
1985 | -4.90 | a | -2.40 | c | 22.77 | a | 34.34 | a | 45.70 | a | 47.60 | 56.19 | 52.90 | a | 45.07 | c | 31.89 | d | 11.57 | -8.23 | 27.71 | |||||
1986 | 2.77 | 1.82 | 18.26 | 34.70 | 43.55 | 51.69 | a | 59.17 | a | 52.55 | 46.93 | a | 35.77 | 15.24 | a | 8.77 | 30.94 | |||||||||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.41 | a | 14.47 | a | 18.94 | j |
1988 | -7.14 | c | -3.82 | a | 16.59 | b | 28.57 | 46.94 | 52.60 | 57.19 | 56.06 | 44.69 | a | 29.55 | b | 21.00 | c | 2.31 | b | 28.71 | ||||||
1989 | 0.80 | a | -10.79 | d | 12.34 | b | 27.59 | c | 41.21 | b | 50.10 | a | 57.61 | 54.77 | 46.41 | a | 33.41 | b | 15.41 | c | -5.52 | d | 26.95 | |||
1990 | 10.83 | b | 4.31 | b | 19.23 | 29.89 | b | 39.10 | 53.53 | 55.10 | 52.81 | ----- | z | 31.65 | 22.37 | 3.38 | b | 29.29 | a | |||||||
1991 | -3.54 | c | 9.08 | b | 17.66 | b | ----- | z | ----- | z | 54.57 | 57.16 | 56.23 | a | 45.59 | a | 32.07 | a | 16.36 | b | 6.57 | a | 29.17 | b | ||
1992 | 8.73 | a | 15.62 | 17.77 | a | 29.80 | 40.84 | 47.54 | d | 48.83 | a | 50.33 | a | 40.62 | f | 29.83 | a | 19.00 | h | 7.60 | f | 32.14 | c | |||
1993 | -3.71 | g | 4.32 | i | 11.35 | n | 28.96 | d | 41.16 | l | 51.44 | c | 54.96 | e | 54.78 | h | 39.81 | i | 28.43 | h | 16.33 | i | 10.30 | h | 45.12 | i |
1994 | -15.17 | g | -6.00 | c | 19.29 | c | 28.53 | 41.88 | f | 52.89 | b | 54.10 | a | 49.83 | a | 46.70 | 38.77 | 24.00 | b | 10.07 | c | 31.82 | b | |||
1995 | 2.07 | a | -3.00 | a | 16.73 | a | 25.55 | a | 38.67 | a | 54.74 | c | 53.90 | b | 55.28 | b | 42.92 | e | 34.45 | b | 13.00 | c | 3.06 | 28.11 | ||
1996 | -14.63 | a | -1.00 | 5.55 | 24.82 | b | 37.38 | b | 51.20 | 52.68 | 52.36 | c | 44.03 | 31.94 | 12.70 | 2.55 | 24.96 | |||||||||
1997 | -6.23 | 0.93 | 14.61 | 25.63 | 34.03 | 52.21 | a | 56.07 | a | 50.73 | a | 47.21 | a | 34.23 | a | 18.72 | a | 17.42 | 28.80 | |||||||
1998 | 5.60 | a | 21.18 | 17.16 | 31.17 | a | 46.79 | b | 49.47 | 54.03 | 53.48 | 46.30 | 37.61 | 25.43 | 10.10 | 33.19 | ||||||||||
1999 | -0.61 | 10.67 | a | 19.13 | 32.57 | 43.30 | a | 50.70 | 61.10 | a | 53.67 | a | 44.83 | 30.58 | 26.97 | 13.68 | 32.21 | |||||||||
2000 | -0.32 | 12.46 | a | ----- | z | 29.40 | 42.17 | a | 48.07 | ----- | z | 54.55 | 40.97 | 37.71 | 23.52 | a | -5.42 | 28.31 | b | |||||||
2001 | 8.00 | -4.25 | 13.58 | 32.90 | 40.71 | 53.57 | 56.68 | 54.26 | ----- | z | 34.06 | 33.23 | 16.32 | 30.82 | a | |||||||||||
2002 | 7.35 | 12.75 | 6.61 | 28.67 | 33.80 | a | 54.00 | 57.39 | 51.90 | 47.83 | 26.94 | 21.23 | 14.90 | 30.28 | ||||||||||||
2003 | 1.47 | a | 1.57 | 13.35 | 30.67 | 39.83 | b | 45.63 | 52.77 | ----- | z | 44.07 | 34.90 | 19.83 | 14.60 | a | 27.15 | a | ||||||||
2004 | -7.55 | 7.79 | 19.58 | 29.77 | 36.23 | 47.80 | 54.00 | 48.19 | 50.30 | 36.87 | 27.67 | 8.77 | a | 29.95 | ||||||||||||
2005 | -2.84 | 10.82 | ----- | z | 34.13 | 42.29 | 56.13 | 58.10 | a | 53.87 | 47.93 | 36.48 | 24.40 | 13.55 | 34.08 | a | ||||||||||
2006 | ----- | z | 1.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.07 | k | |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.20 | o | 34.35 | 22.00 | -0.35 | 18.67 | i | |||
2009 | -7.61 | 3.18 | 13.74 | 31.00 | 36.23 | a | 46.07 | a | ----- | z | 50.28 | b | 50.37 | 32.65 | 29.60 | 6.32 | 26.53 | a | ||||||||
2010 | 0.87 | 0.54 | 23.69 | b | 33.67 | 42.50 | a | 49.93 | b | 57.44 | f | 58.58 | g | 43.00 | 37.03 | 22.14 | a | 4.97 | 25.83 | b | ||||||
2011 | -5.58 | 0.14 | 11.74 | 29.33 | 39.23 | 55.54 | q | ----- | z | 58.31 | b | 43.10 | 39.32 | 23.66 | a | 18.13 | 25.74 | b | ||||||||
2012 | 8.10 | 13.14 | 23.47 | l | ----- | z | 39.84 | 54.64 | h | 63.52 | j | 48.64 | q | 41.08 | q | 31.86 | j | 23.17 | 10.42 | 18.93 | g | |||||
2013 | 0.00 | x | 2.46 | 4.20 | f | 23.10 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 12.78 | j | |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | 42.71 | 53.60 | 55.97 | 56.97 | 46.52 | a | 33.55 | 12.57 | 14.58 | 39.56 | d | |||||||
2015 | 6.10 | -5.36 | 19.27 | a | 28.70 | 38.24 | f | 50.90 | a | 58.04 | d | 52.13 | h | 53.31 | a | 35.27 | a | 31.13 | g | 19.60 | u | 30.78 | d | |||
2016 | 3.58 | 11.41 | 25.23 | 30.03 | 40.26 | 50.37 | 57.77 | 57.40 | a | 49.87 | 38.55 | 30.64 | b | ----- | z | 35.92 | a | |||||||||
2017 | 5.53 | a | 11.86 | 14.10 | 32.26 | k | 40.63 | a | 50.70 | 56.48 | ----- | z | 49.44 | e | 36.42 | 17.09 | h | 3.00 | a | 29.80 | c | |||||
2018 | -0.39 | -4.46 | 14.77 | 19.93 | 37.96 | h | ----- | z | ----- | z | 54.32 | 49.47 | 32.26 | 25.00 | y | 12.23 | 22.27 | d | ||||||||
2019 | -5.52 | -8.21 | 8.68 | 25.53 | o | 36.39 | 52.47 | 58.89 | v | 49.00 | s | 47.00 | 38.73 | e | ----- | z | ----- | z | 24.22 | e | ||||||
2020 | 4.66 | b | 3.00 | 18.18 | c | 27.00 | 40.10 | 53.10 | 59.58 | 57.03 | 42.87 | 29.13 | a | 26.17 | 12.35 | 31.10 | ||||||||||
2021 | 9.84 | -5.07 | 22.03 | 30.83 | 39.19 | 56.53 | 56.94 | 58.65 | 47.03 | 40.84 | 24.40 | 9.03 | a | 32.52 | ||||||||||||
2022 | -10.97 | -9.71 | 13.94 | 26.87 | 43.37 | a | 53.23 | 60.34 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.29 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -1.84 | 2.15 | 15.81 | 29.43 | 40.82 | 51.21 | 56.08 | 53.75 | 45.60 | 34.88 | 21.42 | 6.51 | 29.39 | |||||||||||||
S.D. | 6.81 | 7.24 | 5.50 | 3.00 | 3.42 | 2.63 | 2.47 | 2.45 | 2.83 | 3.58 | 4.93 | 6.76 | 2.20 | |||||||||||||
SKEW | -0.04 | 0.43 | -0.33 | -0.47 | 0.20 | -0.32 | -0.31 | -0.09 | 0.30 | -0.13 | -0.27 | -0.18 | 0.03 | |||||||||||||
MAX | 10.83 | 21.18 | 26.80 | 34.79 | 49.87 | 56.53 | 61.10 | 58.65 | 53.31 | 42.74 | 33.23 | 18.13 | 33.19 | |||||||||||||
MIN | -15.10 | -10.79 | 3.03 | 19.93 | 33.80 | 44.89 | 48.83 | 48.19 | 39.57 | 25.86 | 11.57 | -8.23 | 24.96 | |||||||||||||
YRS | 49 | 54 | 49 | 53 | 50 | 50 | 43 | 42 | 47 | 53 | 50 | 48 | 20 |