YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | -11.50 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 60.30 | u | 49.30 | 34.42 | 23.50 | 6.61 | 28.46 | h | ||||
1949 | -4.23 | a | -4.39 | 19.32 | 33.59 | a | 45.42 | 52.63 | 58.61 | 58.55 | 42.57 | 35.47 | a | 28.10 | a | 2.94 | 30.71 | |||||||||
1950 | -13.52 | 0.86 | 12.19 | 27.07 | 41.87 | 51.69 | a | 53.90 | 52.68 | 46.73 | 35.97 | 14.00 | 4.68 | 27.34 | ||||||||||||
1951 | -2.48 | 7.74 | a | 5.48 | 30.37 | 44.84 | 48.10 | 56.35 | 54.55 | 42.67 | 32.87 | 14.23 | -1.13 | 27.80 | ||||||||||||
1952 | -2.55 | 10.90 | 11.87 | 35.21 | a | 44.48 | 56.23 | 57.94 | 55.78 | d | 48.03 | 29.84 | 20.40 | 11.23 | 31.61 | |||||||||||
1953 | 6.37 | a | 11.54 | 17.44 | d | 28.70 | 42.50 | a | 54.30 | 56.87 | 58.77 | 45.57 | 38.81 | 25.67 | 13.55 | 33.34 | ||||||||||
1954 | -4.94 | 24.18 | 16.10 | a | 30.72 | a | 37.77 | 53.00 | 59.94 | 55.87 | 46.80 | 35.23 | 25.97 | 14.06 | 32.89 | |||||||||||
1955 | 4.93 | a | 0.50 | 12.94 | 37.83 | 46.84 | 51.79 | b | 61.52 | 60.45 | 46.00 | 35.77 | 9.00 | -2.03 | 30.46 | |||||||||||
1956 | -0.90 | -1.52 | 15.29 | 24.50 | 43.00 | 57.10 | 55.39 | 55.06 | 42.97 | 37.10 | 21.03 | 13.35 | 30.20 | |||||||||||||
1957 | -5.19 | 6.89 | a | 18.29 | 30.80 | 42.87 | 51.40 | 61.03 | a | 56.97 | a | 43.40 | 36.81 | 21.80 | 15.29 | 31.70 | ||||||||||
1958 | 8.68 | 0.93 | 20.94 | 33.13 | 44.29 | 48.56 | c | 54.53 | a | 55.58 | 44.63 | 33.32 | 18.73 | 1.93 | d | 30.44 | ||||||||||
1959 | -3.06 | -2.32 | 22.35 | 28.89 | b | 41.45 | 54.70 | 55.06 | 56.74 | 44.83 | 27.90 | 10.63 | 17.03 | 29.52 | ||||||||||||
1960 | -1.35 | 1.07 | a | 6.87 | 32.57 | 41.68 | 51.70 | 58.32 | 55.62 | b | 45.90 | 32.68 | 15.77 | 4.00 | a | 28.73 | ||||||||||
1961 | 1.93 | a | 7.79 | 25.06 | 25.73 | 39.42 | 53.53 | 55.06 | 56.68 | 41.37 | 33.77 | 15.93 | -3.13 | 29.43 | ||||||||||||
1962 | -2.06 | 3.71 | 14.61 | 31.10 | 46.55 | 52.57 | 55.86 | c | 53.97 | 41.10 | 34.39 | 21.90 | a | 7.16 | 30.07 | |||||||||||
1963 | -8.97 | 3.04 | 20.32 | 30.23 | 38.65 | 54.70 | 58.97 | 56.45 | 48.37 | 40.55 | 22.40 | 1.61 | 30.53 | |||||||||||||
1964 | 9.35 | 12.17 | 9.97 | 33.43 | 45.77 | 53.80 | 61.32 | 53.71 | 43.37 | 32.81 | 16.50 | -1.26 | 30.91 | |||||||||||||
1965 | -5.03 | 1.79 | 7.55 | 32.62 | a | 44.06 | 54.13 | 58.74 | 56.26 | 41.61 | l | 36.97 | 19.77 | 16.39 | 29.39 | a | ||||||||||
1966 | -8.71 | 1.50 | 22.63 | a | 28.23 | 40.21 | b | 53.10 | a | 62.48 | 53.83 | b | 46.53 | 34.00 | 13.44 | l | 10.20 | a | 31.27 | a | ||||||
1967 | 5.42 | 0.14 | 20.76 | b | 30.43 | 39.10 | 52.57 | 53.65 | 51.97 | 45.50 | 33.87 | 21.40 | 4.74 | 29.96 | ||||||||||||
1968 | 1.45 | 5.79 | 22.61 | 30.00 | 39.19 | 54.20 | 56.48 | 53.06 | 45.07 | 35.16 | 23.07 | 3.74 | 30.82 | |||||||||||||
1969 | -5.81 | 10.00 | 8.16 | 35.17 | 44.61 | 47.17 | 57.81 | 58.03 | 46.30 | 28.74 | 19.67 | 8.90 | 29.90 | |||||||||||||
1970 | -6.13 | a | 6.04 | 9.77 | 31.80 | 44.84 | 56.13 | 58.03 | 56.10 | 45.60 | 33.65 | 21.37 | 1.84 | 29.92 | ||||||||||||
1971 | -4.74 | 4.75 | 20.13 | 34.07 | 44.42 | 57.92 | d | 54.03 | 54.06 | 46.17 | 36.16 | 20.37 | 0.45 | 30.65 | ||||||||||||
1972 | -6.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.19 | i | 32.13 | a | 22.47 | -2.91 | i | 15.97 | i | ||
1973 | 7.90 | 12.71 | 28.81 | 30.85 | c | 37.58 | s | 53.00 | b | 57.24 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.66 | g | |||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.55 | b | 43.73 | 32.43 | a | 18.28 | a | -4.00 | a | 29.40 | g | |
1990 | 14.84 | 8.79 | 22.19 | 27.23 | 39.81 | 53.83 | 56.19 | 55.61 | 47.63 | 30.45 | 21.17 | -0.26 | 31.46 | |||||||||||||
1991 | -0.35 | 15.25 | 19.84 | 33.17 | 46.65 | 57.83 | 57.00 | a | 57.32 | 44.03 | 28.45 | 13.43 | 12.45 | 32.09 | ||||||||||||
1992 | 11.35 | 18.66 | 22.45 | 27.33 | 42.32 | 50.43 | 52.13 | 50.81 | 42.50 | 31.26 | 21.93 | 4.81 | 31.33 | |||||||||||||
1993 | -1.55 | 1.96 | 18.00 | 28.93 | 41.39 | 49.23 | 54.94 | 54.43 | a | 39.90 | 30.43 | a | 16.87 | 7.81 | 28.53 | |||||||||||
1994 | -8.93 | a | -3.68 | 20.45 | 30.27 | 45.32 | 54.20 | 54.16 | 53.00 | 46.57 | 37.26 | 22.60 | 10.37 | a | 30.13 | |||||||||||
1995 | 4.71 | 9.64 | 16.61 | 27.97 | 42.65 | 56.43 | 58.74 | 59.55 | 45.07 | 34.35 | 16.17 | a | 9.16 | 31.75 | ||||||||||||
1996 | -5.29 | 7.93 | 9.00 | 26.57 | 41.55 | 55.33 | 55.35 | 55.39 | 46.17 | 31.94 | 10.27 | -0.74 | 27.79 | |||||||||||||
1997 | -6.13 | 6.00 | 14.29 | 26.90 | 40.42 | 56.47 | 59.65 | 57.45 | 47.86 | a | 34.23 | 16.67 | 18.81 | 31.05 | ||||||||||||
1998 | 4.97 | 22.04 | 13.23 | 34.43 | 47.03 | 51.40 | 60.42 | 59.39 | 50.67 | 36.13 | 25.63 | 12.81 | 34.84 | |||||||||||||
1999 | 0.06 | 16.54 | 22.58 | 32.57 | 45.06 | 54.20 | 60.45 | 56.00 | a | 44.47 | 31.94 | 27.13 | 15.23 | 33.85 | ||||||||||||
2000 | 5.71 | 14.14 | 24.58 | 30.60 | 45.10 | 51.83 | 59.50 | a | 58.23 | 45.60 | 37.65 | 14.40 | -2.87 | 32.04 | ||||||||||||
2001 | 7.42 | -3.07 | 15.19 | 32.50 | 46.58 | 54.67 | 61.00 | 57.90 | 47.23 | 32.61 | 27.20 | 12.03 | 32.61 | |||||||||||||
2002 | 11.03 | 13.82 | 7.06 | 28.57 | 37.29 | 55.77 | 61.94 | 55.87 | 48.23 | 28.87 | 21.10 | 13.87 | 31.95 | |||||||||||||
2003 | 3.65 | 0.25 | 13.84 | 32.10 | 42.65 | 52.73 | 58.06 | 57.35 | 44.03 | 36.16 | 14.33 | 15.52 | 30.89 | |||||||||||||
2004 | -1.39 | 7.48 | 22.81 | 29.80 | 40.00 | 49.03 | 55.97 | 50.19 | 47.90 | 34.13 | a | 22.00 | 11.68 | 30.80 | ||||||||||||
2005 | 0.58 | 12.07 | 17.71 | 32.50 | 39.97 | 56.60 | 58.45 | 54.97 | 49.33 | 34.23 | 23.13 | 10.16 | 32.48 | |||||||||||||
2006 | 19.45 | 10.14 | 20.10 | 33.67 | 41.77 | 53.87 | 61.16 | 57.29 | 45.27 | 28.71 | 18.90 | 12.87 | 33.60 | |||||||||||||
2007 | 3.53 | a | -2.07 | 24.29 | 27.13 | 46.29 | 55.33 | 60.84 | 55.87 | 47.60 | 36.94 | 21.07 | 3.61 | 31.70 | ||||||||||||
2008 | 0.52 | 0.62 | 16.16 | 25.70 | 38.97 | 51.37 | 59.23 | 56.23 | 45.90 | 33.65 | 22.80 | 0.10 | 29.27 | |||||||||||||
2009 | -1.77 | 6.18 | 13.13 | 30.63 | 40.61 | 52.20 | 55.42 | 53.61 | 49.80 | 31.06 | 25.10 | 3.87 | 29.99 | |||||||||||||
2010 | 1.87 | 1.11 | 24.52 | 36.77 | 44.61 | 56.07 | 59.58 | 59.23 | 45.33 | 36.84 | 19.90 | 5.68 | 32.62 | |||||||||||||
2011 | -1.13 | 1.36 | 11.84 | 31.50 | 41.90 | 53.63 | 64.52 | 59.03 | 45.97 | 38.32 | 21.20 | 14.58 | 31.89 | |||||||||||||
2012 | 11.19 | 10.86 | 29.74 | 35.47 | 46.06 | 56.17 | 64.26 | 55.23 | 43.73 | 32.03 | 20.20 | 8.39 | 34.44 | |||||||||||||
2013 | 5.81 | 7.14 | 9.52 | 22.80 | 43.16 | 53.87 | 58.39 | 57.68 | 51.53 | 33.90 | 17.83 | -0.94 | 30.06 | |||||||||||||
2014 | 0.58 | -2.07 | 13.81 | 27.57 | 43.68 | 53.90 | 56.58 | 57.61 | 47.23 | 35.90 | 10.90 | 11.32 | 29.75 | |||||||||||||
2015 | 8.68 | -1.07 | 21.03 | 31.23 | 42.61 | 55.90 | 59.71 | 56.55 | 51.50 | 37.84 | 24.10 | 14.81 | 33.57 | |||||||||||||
2016 | 8.35 | 18.10 | 24.45 | 30.57 | 43.55 | 55.70 | 57.58 | 56.35 | 47.80 | 35.71 | 28.90 | 4.87 | 34.33 | |||||||||||||
2017 | 4.68 | 15.36 | 18.32 | 30.40 | 42.13 | 53.03 | 58.39 | 53.90 | 46.40 | 33.84 | 18.20 | 9.19 | 31.99 | |||||||||||||
2018 | 2.55 | -3.57 | 18.65 | 22.57 | 48.03 | 56.87 | 58.10 | 54.87 | 46.27 | 29.42 | 15.90 | 13.81 | 30.29 | |||||||||||||
2019 | 1.90 | -8.14 | 10.87 | 30.80 | 39.35 | 54.13 | 60.71 | 55.68 | 49.73 | 29.19 | 17.90 | 9.52 | 29.30 | |||||||||||||
2020 | 4.97 | 8.62 | 21.81 | 26.90 | 41.87 | 56.73 | 60.10 | 57.90 | 44.70 | 26.58 | 21.97 | 14.06 | 32.18 | |||||||||||||
2021 | 17.00 | -1.71 | 23.13 | 26.83 | 41.16 | 56.80 | 61.16 | 56.65 | 48.60 | 38.06 | 22.60 | 10.13 | 33.37 | |||||||||||||
2022 | 0.61 | 0.89 | 16.16 | 25.07 | 42.97 | 54.27 | 60.71 | 57.58 | 48.17 | 33.39 | 13.30 | c | 0.82 | c | 29.49 | |||||||||||
2023 | 4.38 | e | 3.00 | k | 2.96 | e | 22.72 | e | 45.85 | d | 59.70 | c | 56.62 | e | 64.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | 32.04 | f |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.59 | 5.88 | 17.07 | 30.12 | 42.85 | 53.85 | 58.23 | 56.00 | 46.06 | 33.77 | 19.77 | 7.51 | 31.08 | |||||||||||||
S.D. | 6.72 | 7.15 | 6.06 | 3.45 | 2.63 | 2.56 | 2.73 | 2.14 | 2.50 | 3.07 | 4.60 | 6.16 | 1.73 | |||||||||||||
SKEW | 0.34 | 0.45 | -0.24 | -0.18 | -0.10 | -0.43 | 0.03 | -0.43 | -0.03 | -0.27 | -0.32 | -0.17 | 0.12 | |||||||||||||
MAX | 19.45 | 24.18 | 29.74 | 37.83 | 48.03 | 59.70 | 64.52 | 60.45 | 51.53 | 40.55 | 28.90 | 18.81 | 34.84 | |||||||||||||
MIN | -13.52 | -8.14 | 2.96 | 22.57 | 37.29 | 47.17 | 52.13 | 50.19 | 39.90 | 26.58 | 9.00 | -4.00 | 27.34 | |||||||||||||
YRS | 59 | 57 | 58 | 58 | 57 | 58 | 57 | 57 | 57 | 59 | 58 | 58 | 54 |