YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.41 | c | 29.67 | a | 4.63 | 1.07 | b | 18.94 | h | |
1936 | -19.60 | a | -22.52 | 16.10 | 22.59 | a | ----- | z | 51.33 | 60.29 | 50.37 | a | 43.70 | ----- | z | ----- | z | ----- | z | 25.28 | d | |||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.26 | 18.83 | ----- | z | 23.55 | j | ||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.35 | n | 51.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | 51.56 | k |
1941 | ----- | z | -2.38 | b | 9.53 | a | 32.76 | a | 45.13 | 52.23 | 54.10 | b | 54.87 | 43.14 | a | 31.03 | a | 18.82 | b | 10.87 | 31.83 | a | ||||
1942 | 6.52 | 0.21 | 21.55 | b | 31.63 | 39.63 | a | 49.73 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.88 | f | ||||
1943 | -14.39 | 1.64 | 5.58 | 30.00 | 38.19 | 49.13 | 58.03 | 52.71 | 39.86 | a | 31.77 | 18.83 | 7.94 | 26.61 | ||||||||||||
1944 | 8.29 | -2.93 | 4.74 | 26.73 | 44.77 | 51.22 | c | 52.77 | 52.61 | 42.07 | 30.84 | 19.20 | 3.55 | 27.82 | ||||||||||||
1945 | 2.13 | 4.32 | 23.13 | 26.93 | 33.17 | a | 45.83 | 53.00 | 51.10 | 37.23 | 29.65 | 10.69 | a | -8.41 | b | 25.73 | ||||||||||
1946 | -3.93 | a | -5.48 | c | 21.10 | 34.37 | 38.48 | 48.20 | 55.00 | 49.19 | 42.67 | 28.65 | 12.40 | 1.20 | a | 26.82 | ||||||||||
1947 | 1.76 | b | -4.81 | b | 11.32 | 27.50 | 34.94 | 47.43 | 55.23 | 55.19 | 41.10 | 36.67 | a | 11.77 | -2.42 | 26.31 | ||||||||||
1948 | -6.45 | -5.45 | 3.42 | 26.63 | 40.77 | 49.07 | a | 55.27 | e | 54.68 | 47.97 | 32.58 | 20.61 | b | 0.50 | a | 26.63 | |||||||||
1949 | -10.03 | -11.82 | 8.87 | 33.87 | 42.61 | 51.83 | 56.03 | a | 56.13 | 40.60 | 33.06 | 22.40 | -3.17 | a | 26.70 | |||||||||||
1950 | -22.83 | b | -7.50 | 7.06 | 24.17 | 39.10 | a | 48.63 | 53.39 | 50.35 | 45.07 | 33.35 | 9.57 | -3.70 | a | 23.06 | ||||||||||
1951 | -9.94 | -1.32 | 0.72 | b | 27.10 | 42.10 | 46.04 | e | 53.31 | b | 50.90 | b | 41.40 | 30.97 | 10.07 | a | -3.48 | 23.99 | ||||||||
1952 | -8.13 | a | 8.34 | 9.81 | 34.97 | a | 40.19 | 51.50 | d | 52.87 | a | 51.35 | 44.07 | 28.24 | b | 18.43 | g | 6.52 | 29.07 | a | ||||||
1953 | -0.13 | 6.39 | 13.81 | 25.13 | 41.70 | a | 51.83 | a | 53.90 | 54.74 | 41.63 | 36.19 | 24.57 | 7.45 | 29.77 | |||||||||||
1954 | -16.77 | 17.82 | 13.13 | 26.10 | 35.84 | 52.21 | a | 58.84 | 52.45 | 42.83 | 32.10 | 23.67 | 13.42 | 29.30 | ||||||||||||
1955 | -3.33 | a | -4.93 | a | 3.19 | 36.87 | 44.83 | a | 51.10 | 57.65 | 54.33 | a | 40.93 | 31.32 | 2.63 | -9.00 | d | 25.47 | ||||||||
1956 | -9.37 | a | -7.79 | 5.43 | a | 23.33 | 40.29 | 55.87 | 53.68 | 52.00 | 39.57 | 33.71 | 19.07 | 3.90 | a | 25.81 | ||||||||||
1957 | -8.77 | -0.71 | 15.58 | 28.60 | 40.61 | 47.30 | 57.87 | a | 53.71 | 40.73 | 33.35 | 20.47 | 11.26 | 28.33 | ||||||||||||
1958 | 6.16 | -2.96 | 18.13 | 30.23 | 40.35 | 44.70 | 52.03 | 51.06 | 42.67 | 32.48 | 17.20 | -2.35 | 27.48 | |||||||||||||
1959 | -9.94 | -7.07 | 22.19 | 26.57 | 37.60 | a | 51.63 | 53.97 | 54.84 | 42.30 | 28.48 | 11.57 | 14.23 | 27.20 | ||||||||||||
1960 | -6.70 | a | -2.66 | 4.00 | 29.70 | 40.32 | 49.70 | 55.90 | 54.19 | 43.87 | 32.32 | 17.03 | 0.00 | 26.47 | ||||||||||||
1961 | -1.03 | 4.82 | 22.10 | 25.40 | 36.71 | 51.20 | 54.42 | 55.93 | a | 41.04 | b | 34.42 | 17.43 | -5.52 | 28.08 | |||||||||||
1962 | -5.52 | -5.93 | a | 9.52 | 29.40 | 42.26 | 52.73 | 53.39 | 54.32 | 40.07 | 34.97 | 24.45 | a | 4.77 | 27.87 | |||||||||||
1963 | -8.42 | -0.79 | 17.84 | 29.33 | 38.81 | ----- | z | 57.65 | 54.13 | 45.62 | a | 40.68 | 19.37 | -1.55 | 26.61 | a | ||||||||||
1964 | 0.26 | 6.14 | 5.94 | 32.87 | 43.23 | 50.03 | 57.26 | 49.97 | 40.67 | 32.87 | 16.07 | -9.16 | 27.18 | |||||||||||||
1965 | -12.06 | -3.68 | 5.00 | 31.37 | 39.74 | 50.93 | 53.77 | a | 52.16 | 36.37 | 33.71 | 14.20 | 9.90 | a | 25.95 | |||||||||||
1966 | -17.58 | -4.18 | 21.71 | 26.23 | 37.42 | 51.67 | 58.68 | 51.35 | 43.00 | 31.81 | 10.70 | -0.71 | 25.84 | |||||||||||||
1967 | -1.65 | -8.21 | 13.71 | 27.17 | 36.74 | 49.43 | 52.03 | 50.13 | 45.93 | b | 33.32 | 19.10 | 3.94 | 26.80 | ||||||||||||
1968 | -5.26 | -1.66 | 20.29 | 28.72 | a | 36.03 | 49.40 | 53.10 | 50.74 | 44.93 | 31.48 | 21.83 | 0.35 | 27.50 | ||||||||||||
1969 | -13.23 | 1.89 | 2.55 | 31.93 | 41.03 | 44.93 | 56.19 | 57.45 | 45.57 | 30.42 | 20.23 | 6.19 | 27.10 | |||||||||||||
1970 | -8.93 | a | -1.68 | 4.10 | 30.30 | 39.97 | 56.27 | 56.81 | 53.42 | 44.30 | 31.45 | 17.30 | -3.55 | 26.65 | ||||||||||||
1971 | -12.84 | 2.29 | 12.77 | 30.17 | 40.90 | 54.50 | 52.97 | 51.52 | 42.17 | 33.26 | 16.73 | -1.68 | 26.90 | |||||||||||||
1972 | -11.03 | -6.48 | 9.81 | 27.87 | 43.90 | 50.70 | 49.23 | 52.06 | 37.53 | 25.60 | a | 16.87 | -5.68 | 24.20 | ||||||||||||
1973 | 2.83 | a | 3.46 | 26.03 | 26.07 | 37.61 | 50.03 | a | 51.23 | 53.84 | 40.87 | 35.07 | a | 9.43 | -1.71 | 27.90 | ||||||||||
1974 | -12.68 | -6.75 | 4.19 | 27.57 | 38.87 | 49.43 | 58.16 | 49.00 | 37.57 | 30.97 | 17.93 | a | 9.03 | 25.27 | ||||||||||||
1975 | -3.42 | -2.54 | 5.84 | 25.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 6.27 | h | ||||
1976 | -1.76 | f | 7.36 | a | 6.39 | 31.63 | 36.68 | 53.93 | 54.13 | 52.16 | 40.17 | a | 23.77 | 9.62 | a | -4.03 | a | 28.35 | a | |||||||
1977 | -14.13 | 8.11 | 19.58 | 27.28 | l | 52.48 | h | 51.50 | 54.23 | 45.52 | 45.33 | 33.29 | 14.97 | -4.87 | 25.35 | b | ||||||||||
1978 | -14.47 | a | -8.77 | b | 8.93 | a | 30.62 | a | 43.45 | 49.83 | 55.03 | 49.19 | 47.13 | 31.61 | 7.90 | -4.94 | 24.63 | |||||||||
1979 | -17.93 | b | -15.43 | 3.80 | a | 21.33 | 36.32 | 51.17 | 58.94 | 50.87 | 43.80 | 29.19 | 15.87 | 9.29 | 23.93 | |||||||||||
1980 | -8.10 | -1.25 | a | 4.29 | 31.67 | 42.90 | 48.77 | 55.52 | 50.13 | 42.27 | 32.45 | 23.53 | 2.16 | 27.03 | ||||||||||||
1981 | 0.81 | 8.39 | 21.10 | 29.73 | 39.47 | a | 50.70 | 56.30 | a | 55.52 | 41.80 | 31.87 | 23.93 | -1.42 | 29.85 | |||||||||||
1982 | -22.00 | f | -4.89 | i | 12.58 | e | 24.54 | f | 43.78 | h | 46.32 | k | 56.57 | c | 51.76 | j | 41.74 | g | 34.42 | g | 13.00 | h | 10.14 | c | 26.43 | i |
1983 | 6.72 | b | 11.04 | e | 18.17 | b | 27.12 | d | 35.04 | h | 49.85 | j | 59.60 | k | 56.55 | i | 43.62 | f | 31.57 | h | 23.08 | e | -11.48 | f | 17.23 | g |
1984 | -1.68 | f | 15.62 | c | 16.05 | k | 31.50 | b | 37.35 | h | 51.00 | b | 54.92 | f | 54.59 | i | 37.59 | h | 33.33 | g | 15.00 | i | -9.13 | h | 32.71 | i |
1985 | -4.22 | h | -3.38 | l | 20.52 | f | 30.00 | k | 42.41 | n | 44.70 | c | 51.46 | c | 48.86 | j | 40.10 | i | 31.04 | h | -1.84 | k | -6.57 | h | 48.08 | j |
1986 | 3.52 | f | ----- | z | 19.55 | k | 30.23 | h | 42.76 | j | 50.91 | h | 54.81 | e | 48.57 | j | 42.00 | h | 31.11 | l | 10.91 | h | 8.33 | g | 54.81 | k |
1987 | 8.06 | m | 13.32 | f | 15.19 | j | 34.35 | g | 42.29 | n | 53.57 | g | 56.44 | f | 49.88 | e | 42.59 | a | 24.97 | a | 21.17 | a | 11.87 | a | 30.10 | g |
1988 | -7.26 | -4.21 | a | 16.19 | 23.47 | 44.90 | 56.33 | 55.48 | 52.52 | 42.38 | a | 26.07 | a | 16.10 | a | 1.06 | 26.92 | |||||||||
1989 | -2.39 | -13.25 | 5.06 | 28.37 | 41.32 | 48.07 | 58.55 | 52.65 | 40.55 | a | 28.81 | 11.17 | -9.32 | 24.13 | ||||||||||||
1990 | 9.07 | a | 0.64 | 17.23 | 26.80 | 36.42 | 50.07 | 53.52 | 52.26 | 41.93 | 26.81 | 13.53 | -5.68 | 26.88 | ||||||||||||
1991 | -7.87 | 10.61 | 15.26 | 30.57 | 44.39 | 54.20 | 55.29 | 53.65 | 41.43 | 26.26 | 10.27 | 4.77 | a | 28.23 | ||||||||||||
1992 | 3.32 | 8.25 | a | 21.52 | 26.77 | 41.42 | 47.90 | a | 49.55 | 48.10 | 38.50 | 26.97 | 18.53 | -4.61 | 27.18 | |||||||||||
1993 | -8.39 | -2.96 | 13.60 | a | 26.50 | b | 39.45 | 47.86 | a | 52.17 | a | 51.93 | a | 38.83 | 25.29 | 14.23 | 4.16 | 25.22 | ||||||||
1994 | -15.19 | -11.36 | 19.48 | 26.47 | 40.23 | 52.33 | 52.10 | a | 49.34 | b | 44.33 | 37.33 | a | 19.93 | a | 4.55 | 26.63 | |||||||||
1995 | -3.67 | a | 0.89 | 12.19 | 25.17 | a | 38.81 | 54.62 | a | 54.80 | a | 52.90 | b | 39.57 | 31.29 | 10.89 | b | 0.23 | a | 26.47 | ||||||
1996 | -15.94 | -4.86 | 4.50 | a | 22.42 | d | 38.68 | 52.31 | a | 54.73 | a | 53.13 | 43.47 | ----- | z | ----- | z | ----- | z | 27.60 | c | |||||
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.07 | a | 15.14 | b | 15.00 | 20.07 | i | |
1998 | -1.86 | b | 17.39 | 10.45 | 32.86 | b | 42.69 | b | 50.76 | a | 55.60 | a | 55.42 | 44.97 | 33.63 | a | 19.13 | 4.74 | 30.48 | |||||||
1999 | -7.71 | c | 9.43 | 15.72 | b | 31.07 | a | 45.13 | a | 51.67 | c | 56.48 | 53.39 | 41.13 | 29.35 | 22.57 | 10.39 | 29.89 | ||||||||
2000 | -0.10 | 8.62 | 22.77 | a | 26.70 | 41.42 | 48.70 | 56.94 | 53.55 | 42.41 | a | 31.81 | 12.43 | -11.45 | 27.82 | |||||||||||
2001 | 1.47 | a | -9.11 | 11.94 | 30.93 | 43.74 | 51.28 | a | 57.48 | 53.80 | a | 42.03 | 28.39 | 24.10 | 4.65 | 28.39 | ||||||||||
2002 | 3.52 | 10.39 | 2.23 | a | 24.33 | 32.55 | 54.33 | c | 57.81 | 52.65 | 44.53 | 22.93 | b | 16.79 | a | 9.23 | 27.61 | |||||||||
2003 | -3.16 | -8.96 | a | 5.76 | b | 32.10 | a | 41.26 | 50.70 | 55.26 | 54.94 | 42.67 | 31.94 | 5.70 | 7.03 | 26.27 | ||||||||||
2004 | -11.93 | a | 2.93 | 13.58 | 27.80 | 36.16 | 48.43 | 54.77 | 46.71 | 44.97 | 31.71 | 19.60 | 5.81 | 26.71 | ||||||||||||
2005 | -8.32 | 3.32 | 14.48 | 32.13 | 39.71 | 53.73 | 56.26 | 51.26 | 44.07 | 32.48 | 21.00 | 9.19 | 29.11 | |||||||||||||
2006 | 17.10 | -5.50 | 15.29 | 35.97 | 42.39 | 53.97 | 56.13 | 52.90 | a | 40.23 | 27.52 | 14.00 | 8.65 | 29.89 | ||||||||||||
2007 | -0.35 | ----- | z | 15.77 | 25.80 | 41.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.63 | h | ||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -5.71 | -0.61 | 12.19 | 28.63 | 40.08 | 50.61 | 55.05 | 52.31 | 42.18 | 31.01 | 16.35 | 2.18 | 26.94 | |||||||||||||
S.D. | 7.98 | 7.99 | 6.72 | 3.45 | 3.00 | 2.70 | 2.34 | 2.33 | 2.43 | 3.36 | 5.28 | 6.63 | 1.65 | |||||||||||||
SKEW | 0.32 | 0.13 | 0.14 | 0.18 | -0.29 | -0.09 | -0.14 | -0.43 | -0.08 | -0.09 | -0.48 | -0.03 | -0.03 | |||||||||||||
MAX | 17.10 | 17.82 | 26.03 | 36.87 | 45.13 | 56.33 | 60.29 | 57.45 | 47.97 | 40.68 | 24.57 | 15.00 | 30.48 | |||||||||||||
MIN | -22.83 | -22.52 | 0.72 | 21.33 | 32.55 | 44.70 | 49.23 | 45.52 | 36.37 | 22.93 | 2.63 | -11.45 | 23.06 | |||||||||||||
YRS | 60 | 62 | 63 | 62 | 58 | 60 | 61 | 60 | 60 | 60 | 60 | 60 | 51 |