YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.07 | ----- | z | 24.07 | k | |
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 | 63.42 | x | 44.19 | 33.70 | 21.50 | 33.13 | i | |||
1953 | 13.95 | 16.80 | 30.03 | 41.18 | 56.73 | 68.95 | 71.65 | 72.45 | 60.62 | 54.66 | 36.33 | 16.32 | 44.97 | |||||||||||||
1954 | 4.03 | 29.18 | 27.31 | 44.85 | 52.37 | 68.15 | 73.15 | 68.73 | 58.92 | 46.40 | 37.17 | 22.19 | 44.37 | |||||||||||||
1955 | 12.71 | 11.09 | 24.53 | a | 52.72 | 63.13 | 66.37 | 76.56 | 73.40 | 60.08 | 49.19 | 22.77 | 7.76 | 43.36 | ||||||||||||
1956 | 8.63 | 10.60 | 23.69 | 39.65 | 57.08 | 71.85 | 68.32 | 68.82 | 56.77 | 54.11 | 31.38 | 21.76 | 42.72 | |||||||||||||
1957 | 6.98 | 18.61 | 29.47 | 44.55 | 54.97 | 65.02 | 76.24 | 68.71 | 57.27 | 47.08 | 31.67 | 23.63 | 43.68 | |||||||||||||
1958 | 19.18 | 12.23 | 30.60 | 45.43 | 59.92 | 61.58 | 68.13 | 70.63 | a | 61.03 | 50.81 | 32.50 | 13.31 | 43.78 | ||||||||||||
1959 | 8.18 | 13.34 | 33.39 | 44.87 | 58.45 | 70.30 | 73.23 | 75.25 | o | 61.07 | 42.10 | 23.08 | 28.16 | 41.47 | a | |||||||||||
1960 | 11.97 | 15.05 | 17.68 | 43.43 | 57.39 | 64.50 | 73.05 | 71.66 | 61.45 | 49.32 | 33.28 | 16.39 | 42.93 | |||||||||||||
1961 | 13.47 | 24.39 | 35.13 | 38.62 | a | 54.44 | 69.40 | 70.34 | 72.95 | 59.02 | 49.31 | 31.97 | 12.89 | 44.33 | ||||||||||||
1962 | 8.98 | 12.36 | 25.10 | 41.93 | 59.97 | 66.45 | 68.35 | 70.24 | 57.58 | 51.35 | 37.37 | 20.21 | 43.33 | |||||||||||||
1963 | 5.10 | a | 15.27 | 34.87 | 47.27 | 56.68 | 70.60 | 72.68 | 69.87 | 62.93 | 57.87 | 36.35 | 10.68 | 45.01 | ||||||||||||
1964 | 19.26 | 23.33 | 22.76 | 47.03 | 62.44 | 68.98 | 75.77 | 68.02 | a | 59.09 | a | 48.87 | 31.47 | 10.82 | 44.82 | |||||||||||
1965 | 5.65 | 10.89 | 16.71 | 43.32 | 58.85 | 67.15 | 71.06 | 69.06 | 51.73 | 51.13 | 30.53 | 25.50 | 41.80 | |||||||||||||
1966 | 1.26 | 13.73 | 34.60 | 39.43 | 54.84 | 68.35 | 75.98 | 67.06 | 60.08 | 48.02 | 27.08 | 16.06 | 42.21 | |||||||||||||
1967 | 12.97 | 7.22 | a | 29.92 | 44.45 | 52.53 | 65.78 | 70.48 | 67.84 | 60.97 | 47.00 | 31.80 | 20.10 | 42.59 | ||||||||||||
1968 | 13.06 | 13.67 | 38.52 | 47.50 | 53.34 | 67.77 | 69.46 | g | 70.42 | l | 60.20 | 49.52 | 33.27 | 14.45 | 39.13 | b | ||||||||||
1969 | 4.19 | 16.20 | 19.18 | 47.15 | 59.37 | 60.80 | 71.26 | 73.17 | h | 61.85 | 44.08 | 32.50 | 17.31 | 39.44 | a | |||||||||||
1970 | 2.45 | 13.34 | 23.58 | 42.38 | 58.02 | 69.87 | 73.34 | 70.21 | 60.82 | 47.65 | 29.50 | a | 15.65 | 42.23 | ||||||||||||
1971 | 4.53 | 15.59 | 29.02 | 46.18 | 55.60 | 70.67 | 67.45 | 70.21 | 60.52 | 50.42 | 30.82 | 14.89 | 42.99 | |||||||||||||
1972 | 5.81 | 9.38 | 26.90 | 41.88 | 60.15 | 67.15 | 70.10 | 70.06 | 58.38 | 44.95 | 30.27 | 9.13 | 41.18 | |||||||||||||
1973 | 16.21 | 20.84 | 38.69 | 44.42 | 56.40 | 68.95 | 71.76 | 72.37 | a | 58.82 | 53.56 | 32.62 | 14.45 | 45.76 | ||||||||||||
1974 | 7.31 | 15.30 | 27.16 | 46.12 | 54.06 | 66.67 | 76.10 | 66.34 | 57.30 | 50.42 | 32.92 | 23.23 | 43.58 | |||||||||||||
1975 | 13.53 | 12.88 | 21.45 | 38.07 | 60.56 | 66.85 | 75.77 | 70.24 | 57.62 | 51.19 | 33.53 | 17.61 | 43.28 | |||||||||||||
1976 | 10.47 | 25.88 | 29.66 | 50.82 | 57.84 | 71.30 | 75.34 | 73.61 | 61.27 | 43.00 | 25.20 | 11.32 | 44.64 | |||||||||||||
1977 | -2.02 | 21.34 | 34.58 | 52.22 | 67.00 | 68.32 | 74.27 | 65.37 | 60.28 | 47.63 | 28.62 | 12.08 | 44.14 | |||||||||||||
1978 | 2.82 | 9.54 | 28.42 | 43.83 | 59.95 | a | 66.29 | a | 70.61 | 70.56 | 65.67 | 49.13 | 28.98 | 12.40 | 42.35 | |||||||||||
1979 | -0.10 | 5.11 | 24.62 | a | 39.57 | 53.21 | ----- | z | 71.60 | 67.45 | 62.90 | 46.39 | 30.58 | 25.65 | 38.82 | a | ||||||||||
1980 | 13.85 | 15.05 | 25.69 | 49.73 | 62.11 | 67.55 | 73.16 | 69.85 | 60.58 | 45.00 | 36.25 | 18.32 | 44.76 | |||||||||||||
1981 | 16.18 | 22.55 | 37.53 | 49.95 | 57.92 | 66.35 | 72.13 | 69.31 | 60.10 | 46.42 | 37.55 | 13.95 | 45.83 | |||||||||||||
1982 | -2.00 | 14.70 | 27.70 | a | 42.69 | a | 60.43 | b | 62.43 | 72.92 | 69.85 | 59.00 | 47.35 | 27.95 | a | 23.82 | a | 42.24 | ||||||||
1983 | 17.60 | 25.05 | 32.85 | 42.27 | 55.60 | 66.58 | 76.19 | 76.20 | a | 61.72 | 46.86 | b | 32.36 | a | ----- | z | 48.48 | a | ||||||||
1984 | 11.53 | b | 27.68 | a | 24.15 | 45.73 | 55.89 | 67.76 | a | 72.28 | a | 72.16 | 56.58 | 49.75 | a | 33.53 | 13.73 | 44.23 | ||||||||
1985 | 9.71 | b | 16.10 | b | 34.30 | a | 51.55 | b | 62.75 | a | 64.62 | 71.30 | a | 65.68 | 58.00 | 46.16 | 20.00 | b | 5.90 | a | 42.17 | |||||
1986 | 16.06 | 12.61 | a | 33.31 | 47.60 | 59.11 | 70.26 | a | 73.69 | 66.73 | 59.39 | b | 48.27 | a | 26.32 | 24.05 | 44.78 | |||||||||
1987 | 20.45 | 31.21 | 35.18 | 53.83 | a | 63.74 | 70.76 | a | 74.84 | 67.60 | a | 61.83 | a | 44.09 | b | 35.83 | 21.05 | 48.37 | ||||||||
1988 | 7.37 | 12.07 | 32.08 | 47.26 | a | 66.38 | a | 75.48 | 76.78 | a | 73.35 | 61.47 | 43.89 | 29.58 | 18.60 | 45.36 | ||||||||||
1989 | 19.05 | 6.32 | 25.30 | a | 44.72 | 59.35 | 66.98 | 75.65 | 70.97 | 61.33 | 49.31 | 27.03 | 9.26 | 42.94 | ||||||||||||
1990 | 25.58 | 22.68 | 33.89 | 46.33 | 56.82 | 68.43 | 70.61 | 69.92 | 64.38 | 47.60 | 35.23 | 14.34 | 46.32 | |||||||||||||
1991 | 10.55 | 25.39 | 33.02 | 48.83 | 62.24 | 71.76 | a | 71.32 | 71.35 | 60.08 | 46.32 | 24.03 | 19.58 | 45.37 | ||||||||||||
1992 | 21.05 | 27.14 | a | 34.13 | 42.90 | a | 60.98 | 64.67 | 64.71 | 65.42 | 59.65 | 46.97 | 28.16 | a | 15.83 | b | 44.30 | |||||||||
1993 | 9.22 | a | 12.82 | 27.28 | a | 43.43 | 57.21 | 63.45 | 68.95 | 69.32 | 55.53 | a | 45.90 | a | 28.03 | 17.89 | 41.59 | |||||||||
1994 | -1.23 | 8.09 | a | 31.28 | a | 45.35 | 61.68 | a | 69.03 | a | 69.21 | 67.37 | 63.40 | a | 51.05 | b | 35.81 | a | 20.60 | a | 43.47 | |||||
1995 | 15.37 | a | 17.48 | 32.21 | 39.97 | 56.10 | 70.32 | 72.00 | 72.47 | 59.98 | 45.98 | 25.77 | 15.78 | a | 43.62 | |||||||||||
1996 | 3.60 | 14.50 | 23.29 | 40.48 | 54.48 | 69.12 | 68.76 | 70.53 | a | 60.52 | 48.65 | a | 21.22 | 8.90 | b | 40.34 | ||||||||||
1997 | 4.80 | c | 17.09 | a | 25.66 | 42.23 | 54.21 | b | 71.14 | a | 70.63 | 68.65 | a | 63.98 | a | 51.35 | a | 26.12 | 25.76 | 43.47 | ||||||
1998 | 14.48 | 29.04 | 28.74 | 50.13 | 63.90 | 65.24 | a | 72.15 | a | 71.84 | 66.53 | a | 50.76 | 33.27 | 23.37 | 47.45 | ||||||||||
1999 | 9.20 | a | 27.27 | 33.74 | 47.72 | 59.68 | 68.47 | 74.73 | 70.37 | 58.87 | 47.92 | 41.14 | a | 24.31 | 46.95 | |||||||||||
2000 | 12.48 | 24.52 | 40.27 | 45.78 | 60.63 | 65.67 | a | 71.73 | 71.34 | 60.66 | a | 51.56 | 27.66 | a | 4.18 | 44.71 | ||||||||||
2001 | 18.08 | 7.54 | 23.79 | b | 45.74 | a | 60.06 | 68.71 | b | 74.35 | 71.95 | 60.33 | 47.16 | 42.92 | 22.39 | 45.25 | ||||||||||
2002 | 21.48 | 28.50 | 20.90 | 43.93 | 54.34 | 71.38 | 75.35 | 70.02 | 64.12 | a | 39.33 | a | 30.83 | 23.56 | 45.31 | |||||||||||
2003 | 12.68 | 12.86 | 28.76 | 47.50 | 56.90 | a | 67.12 | a | 71.87 | a | 72.63 | 60.47 | a | 48.37 | 26.60 | 21.85 | 43.97 | |||||||||
2004 | 7.92 | 15.53 | 33.45 | 46.84 | a | 53.47 | 63.34 | a | 70.71 | b | 63.45 | b | 65.19 | c | 48.67 | a | 35.05 | b | 21.03 | a | 43.72 | |||||
2005 | 9.42 | 20.78 | a | 28.42 | 49.45 | a | 54.35 | 70.91 | a | 73.98 | a | 69.19 | b | 63.14 | b | ----- | z | ----- | z | 15.85 | a | 45.55 | b | |||
2006 | 24.55 | a | 12.50 | c | 30.03 | 49.33 | a | 59.22 | b | 68.93 | a | 75.50 | 70.18 | 58.22 | 44.23 | a | 31.46 | b | 25.13 | 45.77 | ||||||
2007 | 15.74 | b | 7.59 | 32.90 | 42.08 | 61.87 | a | 70.32 | 73.13 | 68.26 | 62.19 | a | 50.83 | b | 31.60 | 10.92 | 43.95 | |||||||||
2008 | 6.80 | a | 9.67 | 23.90 | 40.40 | 53.53 | 64.75 | 71.71 | 69.47 | 60.07 | 46.40 | 30.84 | a | 9.09 | b | 40.55 | ||||||||||
2009 | 3.28 | a | 14.16 | 26.45 | 42.88 | a | 56.34 | b | 65.23 | 67.15 | a | 66.87 | 64.88 | 40.77 | 38.60 | 13.23 | a | 41.66 | ||||||||
2010 | 7.68 | 9.93 | 34.47 | 52.23 | 57.71 | 67.28 | 72.95 | a | 73.08 | 57.28 | 50.05 | 31.41 | a | 11.03 | 43.76 | |||||||||||
2011 | 5.93 | b | 11.89 | 21.79 | 43.12 | 55.81 | 66.40 | 76.39 | 69.97 | 59.67 | 50.97 | 33.23 | 24.26 | 43.28 | ||||||||||||
2012 | 20.29 | 23.41 | 41.73 | 48.42 | 60.31 | 69.50 | 78.00 | 68.47 | 59.88 | 44.63 | 32.53 | 16.63 | 46.98 | |||||||||||||
2013 | 12.03 | 11.93 | 18.65 | 34.60 | 55.11 | 66.22 | 72.06 | 70.82 | 64.43 | 46.59 | c | 29.28 | 8.27 | 40.83 | ||||||||||||
2014 | 5.16 | 4.12 | 23.15 | 40.18 | 56.37 | 68.18 | 68.89 | 70.15 | 60.85 | 47.82 | 21.45 | 21.84 | 40.68 | |||||||||||||
2015 | 16.65 | 8.09 | 32.10 | 46.70 | 56.79 | 68.20 | 71.89 | 67.95 | 67.05 | 50.13 | 37.97 | 23.89 | 45.62 | |||||||||||||
2016 | 14.10 | 23.34 | 39.00 | 46.05 | 58.39 | 69.00 | 70.89 | 69.85 | 61.97 | 49.10 | 43.38 | i | 14.61 | c | 46.94 | a | ||||||||||
2017 | 15.31 | 27.71 | 30.55 | 46.25 | 56.23 | a | 67.40 | 72.55 | 65.97 | 62.83 | 48.45 | 29.35 | 17.44 | 45.00 | ||||||||||||
2018 | 12.69 | 9.80 | 27.36 | c | 33.12 | 62.98 | 69.85 | 71.30 | a | 69.95 | 62.93 | a | 41.33 | a | 24.67 | 22.24 | 42.35 | |||||||||
2019 | 8.26 | 4.25 | 21.85 | 44.07 | a | 52.55 | b | 68.10 | 72.65 | 67.15 | 63.60 | a | 43.33 | a | 28.48 | 17.68 | 41.00 | |||||||||
2020 | 14.26 | 15.93 | b | 34.02 | b | 42.48 | a | 55.60 | b | 72.73 | b | 74.96 | c | 71.47 | b | 60.31 | a | 41.40 | 35.33 | 23.61 | 45.18 | |||||
2021 | 20.35 | 7.30 | a | 37.79 | 44.20 | b | 59.58 | e | 74.46 | d | 74.23 | c | 70.69 | 64.07 | 53.63 | 34.22 | 19.16 | 46.64 | ||||||||
2022 | 5.95 | a | 8.29 | b | 28.42 | 36.83 | a | 57.60 | a | 70.69 | a | 73.37 | a | 69.32 | 62.98 | 48.79 | 30.43 | 13.31 | 42.16 | |||||||
2023 | 13.10 | 13.07 | 18.42 | 37.57 | 62.53 | 72.28 | 69.65 | 71.47 | 66.07 | 48.65 | 33.06 | c | 31.06 | 44.74 | ||||||||||||
2024 | 14.94 | 28.59 | 31.74 | 45.19 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.09 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.00 | 16.10 | 29.15 | 44.67 | 58.09 | 68.07 | 72.43 | 69.77 | 60.85 | 47.90 | 31.03 | 17.50 | 43.86 | |||||||||||||
S.D. | 6.35 | 7.11 | 5.79 | 4.23 | 3.38 | 2.82 | 2.67 | 2.31 | 2.73 | 3.40 | 4.67 | 5.80 | 1.77 | |||||||||||||
SKEW | 0.03 | 0.44 | -0.08 | -0.22 | 0.40 | -0.09 | -0.27 | -0.14 | -0.18 | -0.02 | -0.12 | -0.09 | 0.11 | |||||||||||||
MAX | 25.58 | 31.21 | 41.73 | 53.83 | 67.00 | 75.48 | 78.00 | 76.20 | 67.05 | 57.87 | 42.92 | 31.06 | 48.37 | |||||||||||||
MIN | -2.02 | 4.13 | 16.71 | 33.12 | 52.37 | 60.80 | 64.71 | 63.45 | 51.73 | 39.33 | 20.00 | 4.18 | 40.34 | |||||||||||||
YRS | 72 | 72 | 72 | 71 | 71 | 70 | 70 | 68 | 71 | 71 | 71 | 71 | 64 |