YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 43.39 | l | 47.06 | 21.63 | 10.39 | 26.36 | i | |||
1948 | -3.29 | 3.48 | ----- | z | 35.67 | 41.65 | 52.20 | 57.68 | 56.97 | 49.43 | 34.81 | d | 31.31 | a | 11.10 | 33.73 | a | |||||||||
1949 | 7.94 | 6.46 | 19.13 | 30.90 | 44.13 | 56.77 | 60.65 | 56.55 | 44.50 | 38.65 | 25.27 | 11.68 | 33.55 | |||||||||||||
1950 | 0.74 | 5.39 | 13.42 | 26.20 | 41.16 | 52.63 | 53.74 | 50.35 | 47.27 | 40.29 | 20.20 | e | 2.03 | 29.45 | ||||||||||||
1951 | 0.61 | 6.21 | 14.03 | 32.07 | 46.61 | 50.10 | 56.26 | 53.58 | 44.60 | 36.55 | 14.33 | 8.48 | 30.29 | |||||||||||||
1952 | 3.19 | 9.97 | 13.61 | 32.87 | 41.10 | 54.67 | 58.87 | 54.23 | 45.83 | 28.35 | 24.43 | 17.20 | a | 32.03 | ||||||||||||
1953 | 9.87 | 4.82 | 19.90 | 30.52 | a | 41.58 | 54.10 | 56.71 | 57.16 | 46.43 | 38.52 | 28.13 | 15.19 | 33.58 | ||||||||||||
1954 | 1.97 | 17.14 | 16.87 | 33.07 | 37.68 | 55.13 | 57.19 | 53.77 | 47.90 | 36.39 | 26.33 | c | 11.68 | 32.93 | ||||||||||||
1955 | 3.55 | 3.79 | 13.71 | 37.73 | 45.23 | 52.20 | 62.32 | 59.32 | 46.34 | a | 38.10 | 19.20 | 3.84 | 32.11 | ||||||||||||
1956 | 2.81 | 1.24 | 10.16 | 28.17 | 41.13 | 54.33 | 55.13 | 56.00 | 44.07 | 39.87 | 23.80 | 12.58 | 30.77 | |||||||||||||
1957 | -2.77 | 7.04 | 18.19 | 33.33 | 41.97 | 52.50 | 57.94 | 54.55 | 44.87 | 33.74 | 24.73 | 12.71 | 31.57 | |||||||||||||
1958 | 9.77 | 4.63 | a | 20.61 | h | ----- | z | 42.36 | i | 47.13 | 53.97 | 54.71 | 47.76 | a | 39.23 | 26.63 | 4.06 | 31.99 | c | |||||||
1959 | -1.68 | 1.25 | 14.84 | 32.20 | 46.65 | 54.87 | 56.48 | 61.32 | 49.17 | a | 35.55 | 14.70 | 20.42 | 32.15 | ||||||||||||
1960 | 10.55 | 11.32 | a | 7.48 | 34.69 | a | 43.23 | 49.77 | 54.33 | a | 56.29 | 48.67 | 35.74 | 26.87 | 7.77 | 32.23 | ||||||||||
1961 | 4.19 | 15.11 | 23.39 | 30.20 | 39.66 | b | 53.23 | 57.45 | 56.10 | 50.17 | 39.00 | 23.43 | 7.17 | a | 33.26 | |||||||||||
1962 | 0.39 | 4.11 | 17.65 | 31.30 | 50.10 | 53.03 | 53.97 | 54.35 | 44.00 | 38.94 | 26.23 | 9.16 | 31.94 | |||||||||||||
1963 | -4.87 | -1.71 | 16.39 | 32.80 | 40.13 | 52.03 | 55.71 | 52.03 | 46.07 | 44.35 | 28.90 | 3.39 | 30.43 | |||||||||||||
1964 | 10.77 | 10.83 | 16.58 | 33.60 | 47.87 | 52.03 | 58.39 | 53.16 | 46.07 | 34.03 | 27.40 | 7.06 | 33.15 | |||||||||||||
1965 | 2.81 | 2.75 | 13.45 | 29.73 | 46.77 | 51.10 | 54.87 | 53.58 | 44.33 | 36.29 | 24.67 | 20.10 | 31.70 | |||||||||||||
1966 | -6.03 | 8.32 | 21.32 | 30.87 | 38.97 | 55.57 | 59.81 | 54.55 | 44.57 | 35.10 | 25.00 | 11.61 | 31.64 | |||||||||||||
1967 | 6.97 | -1.43 | 17.42 | 32.07 | 37.03 | 53.53 | 54.13 | 50.77 | 44.30 | 35.87 | 22.43 | 12.29 | 30.45 | |||||||||||||
1968 | 5.00 | 4.28 | 24.77 | 32.77 | 40.19 | 53.00 | 56.06 | 55.65 | 49.90 | 39.87 | 25.93 | a | 10.58 | 33.17 | ||||||||||||
1969 | 3.48 | 9.32 | 12.94 | 34.79 | a | 43.48 | 48.20 | 57.32 | 56.39 | 46.10 | 36.45 | 22.48 | a | 13.90 | 32.07 | |||||||||||
1970 | -2.13 | 3.21 | 15.48 | 34.63 | 44.77 | 55.57 | 58.68 | 54.65 | 49.07 | 40.03 | a | 25.07 | 10.61 | 32.47 | ||||||||||||
1971 | -3.42 | 6.59 | a | 14.45 | 29.73 | 38.13 | 56.37 | 53.81 | 51.77 | 50.30 | 45.90 | 26.10 | 14.29 | 32.00 | ||||||||||||
1972 | -2.10 | 2.66 | 14.16 | 28.40 | 45.00 | 49.47 | 56.16 | 57.03 | 47.57 | 34.61 | 26.97 | a | 7.84 | 30.65 | ||||||||||||
1973 | 9.19 | 11.67 | a | 28.87 | a | 32.80 | 40.94 | 55.07 | 59.58 | 58.68 | 48.97 | 43.55 | 25.40 | 10.97 | 35.47 | |||||||||||
1974 | 6.35 | 5.68 | 20.83 | a | 33.93 | 40.68 | 49.57 | 57.48 | 54.97 | 42.40 | 38.23 | e | 26.03 | 16.39 | 32.71 | |||||||||||
1975 | 6.94 | 7.25 | 13.17 | a | 26.77 | 47.35 | 53.47 | 59.39 | 55.29 | 43.70 | 36.19 | 28.90 | 10.97 | 32.45 | ||||||||||||
1976 | 0.32 | 13.50 | c | 17.12 | w | ----- | z | ----- | z | ----- | z | 56.77 | 51.90 | b | 41.82 | b | 30.94 | 15.50 | b | -3.64 | i | 30.11 | e | |||
1977 | -8.57 | c | 8.68 | c | 25.43 | a | 35.23 | 48.55 | 49.87 | 59.35 | 48.96 | f | 47.56 | c | 34.84 | 22.50 | b | 8.06 | 30.14 | a | ||||||
1978 | -1.63 | d | -1.76 | c | 10.30 | h | 29.17 | g | 44.39 | 48.04 | f | 55.76 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.19 | h | |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.60 | 34.67 | g | 21.93 | a | 12.10 | 26.21 | i | ||
1980 | 2.68 | 18.00 | v | 11.15 | r | 29.21 | f | 39.90 | a | 48.91 | g | 56.16 | 54.79 | g | 44.96 | e | 30.48 | f | 20.78 | l | 7.92 | f | 35.92 | h | ||
1981 | 1.07 | c | 14.08 | d | 21.03 | b | 31.90 | 37.72 | f | 51.07 | 54.26 | 54.32 | 43.50 | 32.39 | 25.03 | 9.39 | 30.73 | a | ||||||||
1982 | -9.17 | b | 3.67 | a | 16.03 | a | 27.33 | 49.26 | 44.10 | 55.79 | b | 50.32 | 44.20 | 36.87 | 22.78 | c | 17.81 | 29.92 | ||||||||
1983 | 9.10 | b | 17.50 | 23.93 | c | 31.37 | c | 37.62 | b | 51.03 | 60.32 | 58.13 | 46.73 | 34.50 | a | 24.69 | a | -1.65 | 32.77 | |||||||
1984 | -0.35 | 16.41 | 12.31 | b | 33.07 | b | 40.77 | a | 53.86 | a | 54.81 | 56.32 | 45.00 | l | 39.83 | h | 22.90 | 11.24 | b | 30.13 | b | |||||
1985 | 1.87 | 4.89 | a | 20.84 | 35.83 | 45.94 | 48.13 | 52.67 | a | 52.14 | b | 47.30 | c | 35.42 | 20.82 | b | -1.00 | b | 30.40 | |||||||
1986 | 3.67 | a | 5.07 | 20.73 | a | 35.34 | a | 44.97 | 50.07 | 57.61 | 52.93 | p | 45.33 | u | 35.58 | s | 17.97 | 14.74 | 27.80 | c | ||||||
1987 | 10.52 | 15.50 | 23.87 | 33.76 | a | 45.10 | a | 53.37 | 55.32 | 53.87 | 46.87 | 30.42 | 28.60 | 18.94 | 34.68 | |||||||||||
1988 | -0.39 | 2.21 | 19.07 | a | 28.68 | b | 39.58 | e | 48.00 | 55.70 | d | 57.07 | c | 44.85 | c | 29.67 | a | 22.85 | c | 3.97 | 29.27 | |||||
1989 | 10.29 | -2.30 | a | 3.48 | f | 28.61 | b | 36.74 | 46.42 | d | 51.50 | g | 50.06 | 35.18 | b | 28.68 | f | 12.26 | g | -8.44 | m | 29.29 | e | |||
1990 | 9.92 | g | 5.89 | 16.76 | f | 30.14 | a | 38.54 | g | 53.00 | 54.90 | 53.39 | 49.13 | 33.45 | 26.37 | 8.35 | 34.96 | c | ||||||||
1991 | 1.13 | 10.61 | 21.13 | 33.60 | 47.83 | b | 53.78 | g | 55.11 | c | 55.55 | 44.48 | a | 33.77 | 19.31 | a | 11.19 | 30.34 | a | |||||||
1992 | 11.10 | 15.31 | 19.10 | 30.55 | a | 42.57 | a | 48.07 | 51.68 | 50.06 | 45.73 | 33.68 | 23.47 | 12.19 | 31.96 | |||||||||||
1993 | 4.13 | 5.61 | 18.52 | 29.50 | 44.48 | 50.83 | a | 57.39 | 56.41 | b | 40.62 | a | 31.69 | b | 19.69 | a | 13.71 | c | 31.05 | |||||||
1994 | -9.00 | c | -0.08 | b | 18.67 | a | 29.73 | d | 40.04 | d | 53.27 | d | 54.96 | d | 51.00 | o | 49.83 | f | 37.71 | c | 26.69 | a | 14.14 | c | 26.61 | b |
1995 | 7.61 | 4.96 | a | 19.35 | 27.33 | c | 40.55 | 53.57 | 56.48 | 60.76 | f | 43.29 | b | 37.24 | b | 14.41 | a | 4.10 | 28.08 | a | ||||||
1996 | -5.48 | 2.10 | 8.43 | a | 26.27 | 41.15 | d | 54.00 | a | 52.97 | 54.35 | 46.55 | a | 32.19 | 16.33 | 10.00 | 28.24 | |||||||||
1997 | 1.19 | 7.11 | a | 15.19 | 28.30 | 36.67 | a | 51.64 | b | 55.35 | 50.53 | a | 46.72 | a | 34.77 | 21.37 | 18.48 | 30.61 | ||||||||
1998 | 11.81 | 22.07 | 21.52 | 33.57 | b | 46.60 | a | 51.15 | c | 55.07 | a | 54.71 | 46.39 | b | 36.29 | 28.00 | 12.03 | a | 34.93 | |||||||
1999 | -0.73 | a | 13.78 | a | 17.23 | 33.63 | 45.74 | 52.30 | 58.65 | 51.90 | a | 41.21 | a | 31.31 | b | 25.85 | c | 12.29 | 31.93 | |||||||
2000 | 1.87 | 10.03 | 26.06 | 29.73 | 43.43 | a | 51.63 | 54.57 | a | 54.53 | a | 44.77 | d | 36.71 | 24.43 | b | -2.23 | 31.30 | ||||||||
2001 | 9.17 | a | 1.79 | 16.20 | a | 33.07 | 44.52 | 51.36 | b | 50.42 | g | 55.16 | 42.80 | 32.28 | b | 29.11 | c | 18.42 | 30.35 | a | ||||||
2002 | 14.48 | 14.89 | 13.65 | 30.97 | 37.90 | a | 54.47 | 59.84 | 53.61 | c | 48.60 | 31.71 | 22.00 | 15.17 | b | 33.11 | ||||||||||
2003 | 3.26 | -1.57 | 15.37 | a | 28.37 | 39.41 | b | 48.71 | b | 54.52 | b | 56.00 | a | 45.04 | c | 33.16 | 24.57 | 14.50 | a | 30.11 | ||||||
2004 | -0.87 | 7.19 | b | 21.29 | 30.80 | 39.74 | 49.93 | 54.73 | a | 50.52 | d | 47.59 | a | 35.52 | 27.13 | 8.87 | a | 31.04 | ||||||||
2005 | 1.94 | 11.43 | 11.03 | 33.20 | 41.10 | b | 57.17 | 55.84 | 55.65 | 48.36 | b | 37.19 | 23.21 | a | 9.87 | 32.16 | ||||||||||
2006 | 18.68 | 5.33 | a | 20.00 | 34.28 | a | 44.90 | 51.80 | 57.52 | 54.68 | 44.00 | a | 30.17 | b | 26.34 | a | 18.81 | 33.88 | ||||||||
2007 | 11.26 | 2.36 | 21.16 | 30.37 | 45.29 | 51.97 | 55.77 | a | 56.10 | 47.53 | 40.20 | a | 22.36 | b | 5.84 | 32.52 | ||||||||||
2008 | 4.68 | 0.41 | 10.74 | 32.27 | 38.23 | a | 52.67 | 55.84 | 51.87 | 47.43 | 35.20 | a | 22.97 | a | -1.45 | b | 29.24 | |||||||||
2009 | -5.58 | 7.29 | 15.48 | 30.22 | c | 42.57 | a | 52.03 | 51.10 | 53.66 | b | 46.64 | b | 34.06 | 29.83 | 10.13 | 30.62 | |||||||||
2010 | 8.32 | 10.79 | 24.19 | 35.79 | a | 45.41 | b | 54.85 | c | 61.13 | 58.55 | 45.07 | a | 36.35 | 23.89 | b | 12.18 | c | 34.71 | |||||||
2011 | 1.45 | 6.64 | 13.81 | 30.75 | b | 44.43 | a | 51.70 | c | 60.85 | d | 56.97 | 44.55 | a | 36.55 | 27.86 | b | 16.87 | a | 32.70 | ||||||
2012 | 9.61 | 15.34 | 32.48 | 32.70 | 45.00 | b | 53.77 | 60.61 | 53.23 | 42.21 | a | 32.37 | a | 23.00 | 16.74 | 34.76 | ||||||||||
2013 | 4.57 | x | ----- | z | ----- | z | ----- | z | 43.48 | f | 53.23 | 57.32 | 54.20 | a | 46.76 | a | 35.00 | 21.20 | 2.48 | 38.60 | e | |||||
2014 | -5.39 | -5.74 | a | 7.74 | 28.07 | 43.13 | a | 55.93 | 53.39 | 55.48 | 46.25 | b | 36.32 | 17.40 | 16.58 | 29.10 | ||||||||||
2015 | 6.29 | -4.74 | a | 18.39 | 31.50 | 44.39 | 52.53 | 55.77 | 55.93 | a | 54.29 | b | 37.30 | a | 29.70 | 25.97 | 33.94 | |||||||||
2016 | 7.06 | 13.04 | a | 27.17 | a | 31.10 | 43.58 | 53.83 | a | 58.35 | 58.39 | 52.28 | a | 38.97 | a | 31.63 | 13.77 | 35.76 | ||||||||
2017 | 10.55 | 15.70 | a | 20.10 | 35.03 | 42.23 | 52.12 | f | 57.20 | a | 53.48 | b | 50.45 | a | 40.13 | 22.30 | 9.26 | 32.40 | a | |||||||
2018 | 5.45 | 5.70 | a | 19.00 | 20.60 | 48.87 | 56.67 | 59.53 | a | 59.45 | 52.19 | c | 35.42 | 22.67 | 21.29 | 33.90 | ||||||||||
2019 | 8.52 | 6.14 | 15.74 | 32.73 | 43.00 | b | 53.50 | 61.17 | a | 54.97 | 53.20 | 37.29 | 23.80 | 18.29 | 34.03 | |||||||||||
2020 | 16.65 | 8.86 | a | 27.52 | 32.07 | 45.42 | 55.77 | 62.03 | 57.16 | 47.47 | 33.84 | 29.10 | 16.58 | 36.04 | ||||||||||||
2021 | 13.06 | 2.07 | 26.77 | 35.10 | 45.21 | b | 57.80 | 57.58 | 57.55 | 47.93 | 43.19 | 23.73 | 15.81 | 35.48 | ||||||||||||
2022 | -2.65 | 3.86 | 20.29 | 29.93 | 46.93 | b | 53.30 | 57.84 | 56.68 | 49.40 | 34.97 | 25.50 | 12.10 | 32.35 | ||||||||||||
2023 | 17.55 | 10.74 | a | 19.45 | 33.57 | 42.97 | 54.50 | 56.06 | 56.19 | 54.12 | e | 39.65 | 24.70 | 25.13 | 36.22 | |||||||||||
2024 | 16.16 | 19.72 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.94 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.97 | 7.07 | 18.18 | 31.54 | 42.99 | 52.44 | 56.71 | 54.85 | 46.46 | 36.22 | 24.03 | 11.60 | 32.29 | |||||||||||||
S.D. | 6.45 | 5.90 | 5.17 | 2.89 | 3.31 | 2.68 | 2.45 | 2.45 | 3.17 | 3.66 | 3.83 | 5.90 | 1.87 | |||||||||||||
SKEW | 0.10 | 0.27 | 0.27 | -0.77 | -0.02 | -0.55 | 0.24 | -0.04 | -0.13 | 0.57 | -0.61 | -0.21 | 0.14 | |||||||||||||
MAX | 18.68 | 22.07 | 32.48 | 37.73 | 50.10 | 57.80 | 62.32 | 61.32 | 54.29 | 47.06 | 31.63 | 25.97 | 36.22 | |||||||||||||
MIN | -9.17 | -5.74 | 7.48 | 20.60 | 36.67 | 44.10 | 51.10 | 50.06 | 35.18 | 28.35 | 14.33 | -2.23 | 28.24 | |||||||||||||
YRS | 74 | 74 | 67 | 70 | 70 | 70 | 73 | 69 | 72 | 71 | 74 | 73 | 58 |