YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 45.62 | d | 28.73 | a | 26.27 | 19.03 | 29.91 | h | ||
1953 | 14.29 | 8.75 | 22.42 | 30.87 | 41.81 | 52.63 | 56.26 | 55.39 | 45.53 | 35.65 | 27.77 | 16.58 | 33.99 | |||||||||||||
1954 | 5.39 | 19.82 | 19.00 | 32.97 | 37.60 | a | 53.60 | 56.48 | 51.65 | 47.10 | 36.00 | 26.40 | 13.71 | 33.31 | ||||||||||||
1955 | 4.90 | 6.25 | 14.10 | 36.40 | 42.94 | 51.77 | 59.55 | 56.65 | 42.07 | 36.74 | 21.77 | 8.16 | 31.77 | |||||||||||||
1956 | 7.42 | 7.14 | a | 13.55 | 29.90 | 40.84 | 53.23 | 54.55 | 54.65 | 41.00 | 37.06 | 23.83 | 13.84 | 31.42 | ||||||||||||
1957 | -1.55 | 9.04 | 18.32 | 32.67 | 40.81 | 52.50 | 56.90 | a | 53.23 | 42.60 | 32.77 | 24.00 | a | 12.84 | 31.18 | |||||||||||
1958 | 9.58 | 4.14 | 20.84 | 29.00 | 37.03 | 44.73 | 52.71 | 54.50 | a | 46.57 | 38.22 | d | 26.70 | 5.65 | 30.81 | |||||||||||
1959 | -0.84 | 0.82 | 15.84 | 32.60 | 46.84 | 55.17 | 55.87 | 61.48 | 50.00 | 37.23 | 19.03 | a | 22.55 | 33.05 | ||||||||||||
1960 | 13.13 | 13.24 | 10.61 | 35.30 | 43.84 | 50.43 | 54.00 | a | 56.87 | 50.50 | 37.39 | 28.63 | 12.10 | 33.84 | ||||||||||||
1961 | 6.45 | 16.29 | 24.32 | 31.23 | 37.23 | 51.63 | 56.52 | 56.13 | 49.63 | 39.35 | 25.67 | 10.13 | 33.72 | |||||||||||||
1962 | 3.23 | 5.61 | 18.39 | 31.93 | 49.16 | 51.97 | 54.77 | 53.77 | 44.20 | 39.65 | 26.37 | 10.32 | 32.45 | |||||||||||||
1963 | -1.87 | 0.04 | 18.65 | 33.55 | a | 40.52 | 54.00 | a | 58.45 | 54.19 | 47.03 | 44.26 | 30.03 | 5.13 | 32.00 | |||||||||||
1964 | 11.39 | 12.93 | 18.65 | 33.43 | 48.35 | 51.87 | 58.35 | 53.19 | 46.40 | 32.48 | 26.37 | 8.23 | 33.47 | |||||||||||||
1965 | 4.10 | 4.32 | 15.16 | 29.43 | 46.13 | 48.55 | a | 54.35 | 54.68 | 45.14 | a | 38.16 | 26.37 | 22.19 | 32.38 | |||||||||||
1966 | -0.48 | 12.11 | 24.35 | 31.50 | 38.84 | 53.47 | 58.58 | 54.45 | 45.60 | 35.81 | 26.80 | 13.80 | a | 32.90 | ||||||||||||
1967 | 8.35 | 0.89 | 18.26 | 33.27 | 37.48 | 54.00 | 54.84 | 50.48 | 44.80 | 36.71 | 23.57 | 13.42 | 31.34 | |||||||||||||
1968 | 7.16 | 5.97 | 25.52 | 33.57 | 41.61 | 53.30 | 57.77 | 55.55 | 50.67 | 40.61 | 28.30 | 13.74 | 34.48 | |||||||||||||
1969 | 5.81 | 11.14 | 15.39 | 34.60 | 43.35 | 46.80 | 56.97 | 54.74 | 46.80 | 37.84 | 24.30 | 15.29 | 32.75 | |||||||||||||
1970 | 1.42 | 8.93 | 16.77 | a | 32.79 | b | 42.48 | 53.93 | 57.06 | 53.71 | 48.33 | 39.94 | 26.83 | 13.32 | 32.96 | |||||||||||
1971 | 0.42 | 7.68 | 16.55 | 30.40 | 39.10 | 57.13 | 55.29 | 52.32 | 49.77 | 46.00 | 28.33 | 17.03 | 33.34 | |||||||||||||
1972 | -0.16 | 5.21 | 15.68 | 29.13 | 45.26 | 50.03 | 56.29 | 57.48 | 48.17 | 35.81 | 28.93 | 9.83 | a | 31.81 | ||||||||||||
1973 | 11.65 | 14.21 | 30.48 | 34.67 | 42.42 | 55.40 | 58.92 | e | 57.10 | 49.87 | 43.39 | 27.13 | 14.03 | 36.61 | ||||||||||||
1974 | 8.29 | 8.50 | 22.35 | 34.48 | e | 41.81 | 50.13 | 58.58 | 53.81 | 39.77 | 34.94 | 26.43 | 15.80 | a | 32.91 | |||||||||||
1975 | 7.14 | b | 6.56 | a | 13.06 | 27.37 | 48.61 | 54.90 | a | 58.13 | 53.19 | 41.60 | 35.94 | 28.97 | 12.29 | 32.31 | ||||||||||
1976 | 0.10 | b | 14.72 | 19.60 | a | 36.03 | 40.83 | a | 53.14 | a | 55.65 | 49.55 | 39.90 | a | 27.47 | a | 14.31 | a | -3.19 | d | 29.01 | |||||
1977 | -9.03 | b | 8.56 | a | 26.63 | a | 34.43 | 48.40 | a | 50.57 | 59.42 | 51.03 | 48.33 | 34.40 | a | 25.50 | 8.97 | 32.27 | ||||||||
1978 | 0.83 | a | 1.32 | 15.42 | 31.03 | 45.16 | 50.97 | 55.55 | 54.87 | 49.27 | 33.77 | 21.00 | 6.45 | 30.47 | ||||||||||||
1979 | -4.71 | -2.57 | 18.80 | a | 31.67 | 41.48 | 51.33 | 56.61 | 53.97 | 45.80 | 32.55 | 22.40 | 14.52 | 30.15 | ||||||||||||
1980 | 8.32 | 6.69 | 16.19 | 34.23 | 44.77 | 51.31 | a | 57.74 | 56.27 | a | 44.53 | 29.87 | 25.17 | 10.26 | 32.11 | |||||||||||
1981 | 5.55 | 12.14 | 23.39 | 35.67 | 39.39 | 53.70 | 57.03 | 56.45 | 44.93 | 33.87 | 26.70 | 12.74 | 33.46 | |||||||||||||
1982 | -4.45 | b | 5.65 | b | 18.57 | a | 29.33 | 49.00 | 46.55 | a | 58.03 | 51.68 | 45.20 | 35.45 | 23.20 | 20.63 | a | 31.57 | ||||||||
1983 | 13.93 | a | 18.79 | 25.16 | 31.83 | 39.03 | 52.17 | 61.48 | 58.77 | 47.28 | a | 36.23 | 28.59 | a | 1.20 | a | 34.54 | |||||||||
1984 | 3.52 | 18.69 | 15.52 | 35.37 | 41.19 | 55.37 | 56.87 | 57.19 | 44.59 | a | 38.97 | 22.43 | 11.13 | a | 33.40 | |||||||||||
1985 | 1.50 | a | 4.46 | 22.61 | 34.75 | f | 46.00 | a | 50.88 | d | 56.12 | e | 55.29 | 49.21 | a | 35.50 | a | 21.63 | 0.21 | b | 31.22 | a | ||||
1986 | 5.10 | 7.89 | 21.58 | 37.47 | 45.97 | ----- | z | 61.13 | a | 52.47 | a | 49.43 | b | 36.13 | a | 18.28 | a | 16.48 | 31.99 | a | ||||||
1987 | 12.46 | c | 15.74 | a | 23.31 | b | 36.19 | c | 45.33 | a | 56.40 | 61.03 | a | 56.81 | 47.41 | a | ----- | z | 29.48 | a | 21.96 | c | 36.92 | a | ||
1988 | 0.39 | c | 3.59 | 20.68 | 32.83 | a | 43.87 | 55.40 | 60.86 | b | 60.77 | 46.93 | b | 31.55 | 28.70 | 9.84 | 32.95 | |||||||||
1989 | 12.80 | a | 0.85 | b | 13.17 | a | 30.03 | 42.29 | 49.47 | 58.48 | 55.71 | 44.31 | a | 35.84 | 18.97 | 0.29 | 30.18 | |||||||||
1990 | 10.97 | 7.89 | 21.35 | 33.07 | a | 38.84 | 52.70 | 57.00 | 56.13 | 49.63 | 33.65 | 27.07 | 8.55 | 33.07 | ||||||||||||
1991 | 1.03 | 11.70 | a | 21.29 | 34.93 | 48.94 | 57.07 | a | 57.68 | 56.16 | 43.90 | 35.00 | a | 18.40 | 10.84 | 33.08 | ||||||||||
1992 | 14.03 | 17.48 | 20.52 | 31.00 | 42.90 | 49.40 | 53.68 | 50.81 | 45.97 | 31.86 | b | 24.27 | 12.26 | 32.85 | ||||||||||||
1993 | 5.35 | 7.78 | a | 19.45 | 29.43 | 44.45 | 51.60 | 58.87 | a | 57.06 | 42.57 | 33.23 | a | 22.90 | 16.06 | 32.40 | ||||||||||
1994 | -4.48 | 0.96 | b | 21.65 | 30.57 | 42.87 | a | 55.00 | a | 57.94 | 53.72 | b | 51.17 | a | 38.30 | a | 28.11 | c | 16.97 | 32.73 | ||||||
1995 | 10.52 | 5.93 | 20.53 | a | 28.73 | 42.53 | a | 56.13 | 60.21 | b | 63.23 | 41.83 | a | 38.24 | b | 18.10 | 7.90 | 32.82 | ||||||||
1996 | 1.20 | a | 6.93 | a | 13.65 | 29.53 | 41.00 | a | 56.40 | 56.42 | 56.48 | 48.70 | 34.53 | a | 19.90 | 12.81 | 31.46 | |||||||||
1997 | 4.42 | 11.21 | 19.33 | a | 30.37 | 39.59 | b | 54.27 | 57.68 | 54.35 | 48.53 | 35.83 | a | 22.72 | a | 20.94 | 33.27 | |||||||||
1998 | 13.33 | a | 23.18 | 23.94 | 35.33 | 49.39 | 54.53 | 59.58 | 58.58 | 50.47 | 38.65 | 30.17 | a | 21.95 | i | 39.74 | a | |||||||||
1999 | 3.26 | 18.07 | 22.23 | 33.93 | 47.90 | a | 54.30 | 61.90 | 52.57 | a | ----- | z | 32.81 | 26.13 | 13.67 | a | 33.34 | a | ||||||||
2000 | 6.17 | a | 11.96 | b | 27.32 | 31.53 | 46.84 | 52.97 | 57.19 | 56.70 | a | 45.38 | a | 36.40 | a | 23.33 | ----- | z | 35.98 | a | ||||||
2001 | 8.82 | n | 7.50 | 18.52 | 35.90 | 47.13 | a | 54.60 | 58.81 | 59.63 | a | 47.10 | 35.81 | 31.77 | 20.55 | 37.94 | a | |||||||||
2002 | 16.00 | a | 17.32 | 15.90 | 33.53 | 39.61 | 56.10 | 61.81 | 57.00 | 50.72 | a | 34.03 | 23.23 | 16.19 | 35.12 | |||||||||||
2003 | 5.06 | 2.04 | a | 17.87 | 29.53 | 42.39 | 52.37 | 57.48 | 58.68 | 48.52 | a | 35.35 | 25.93 | 17.23 | 32.70 | |||||||||||
2004 | 2.23 | 9.83 | 24.45 | b | 32.63 | 42.10 | a | 51.47 | 56.65 | 52.10 | 49.90 | 37.26 | 28.77 | 12.81 | 33.35 | |||||||||||
2005 | 5.61 | 15.46 | 14.50 | a | 33.57 | 42.87 | a | 59.87 | 59.87 | 57.97 | 51.63 | 39.71 | 25.61 | b | 11.65 | 34.86 | ||||||||||
2006 | 22.13 | 9.89 | 21.90 | 36.45 | a | 46.16 | 53.07 | 60.29 | 57.71 | 46.73 | 32.58 | 28.23 | 20.13 | 36.27 | ||||||||||||
2007 | 13.94 | 4.50 | b | 23.39 | 33.00 | 46.32 | 55.60 | 58.13 | a | 58.03 | 48.17 | a | 42.73 | a | 24.53 | 9.19 | 34.80 | |||||||||
2008 | 6.06 | 2.46 | a | 14.61 | 34.13 | 39.48 | 55.45 | a | 59.14 | b | 54.58 | 49.13 | 37.33 | a | 24.72 | a | 3.26 | 31.70 | ||||||||
2009 | -2.48 | 10.36 | 17.61 | 32.57 | 45.10 | 54.87 | 54.35 | 55.30 | a | 49.63 | 35.42 | 30.33 | 10.48 | 32.80 | ||||||||||||
2010 | 9.06 | 14.29 | 25.16 | 37.20 | 46.58 | 56.67 | 61.74 | 59.87 | a | 46.60 | 37.90 | 26.20 | 12.57 | a | 36.15 | |||||||||||
2011 | 6.13 | a | 9.46 | 17.84 | 31.55 | a | 44.58 | 53.33 | 62.83 | b | 58.30 | a | 46.43 | 38.39 | 28.83 | 19.40 | a | 34.76 | ||||||||
2012 | 12.32 | 18.14 | 33.60 | a | 33.90 | 47.35 | 56.07 | 63.26 | 56.06 | 45.43 | 35.81 | 24.73 | 19.06 | 37.15 | ||||||||||||
2013 | 7.45 | 6.54 | 15.45 | 29.80 | 44.68 | 54.77 | 58.68 | 55.81 | 48.10 | a | 36.61 | 23.93 | 4.58 | 32.20 | ||||||||||||
2014 | -3.16 | -4.54 | 9.19 | 31.04 | c | 44.84 | 57.30 | 56.10 | b | 57.35 | 47.67 | 37.45 | 18.50 | 17.87 | 30.80 | |||||||||||
2015 | 6.77 | a | -1.64 | 19.97 | 32.20 | 45.16 | 52.14 | a | 57.50 | a | 57.53 | a | 53.73 | 37.97 | 31.45 | a | 27.61 | 35.03 | ||||||||
2016 | 9.61 | 14.11 | a | 27.81 | 31.28 | a | 44.35 | 54.70 | 60.21 | c | 59.85 | e | 53.53 | 40.81 | 32.63 | 14.65 | 36.96 | |||||||||
2017 | 13.10 | 16.71 | 21.35 | 35.93 | 44.10 | 56.62 | a | 59.16 | 55.97 | 51.72 | a | 41.77 | a | 23.77 | 10.77 | 35.91 | ||||||||||
2018 | 7.48 | 8.00 | 20.06 | 23.23 | 50.45 | 57.60 | 60.71 | 60.45 | 50.87 | 36.06 | 22.30 | c | 19.84 | 34.76 | ||||||||||||
2019 | 5.25 | c | 3.07 | 13.74 | 32.47 | 42.45 | 53.50 | 61.84 | 55.94 | 52.73 | 38.00 | a | 23.57 | 17.65 | 33.35 | |||||||||||
2020 | 16.35 | 8.90 | 26.16 | 31.27 | 44.74 | 55.83 | 63.19 | 58.35 | 47.77 | 33.48 | 29.03 | 18.81 | 36.16 | |||||||||||||
2021 | 14.03 | 1.79 | 25.71 | 36.10 | 44.61 | 57.60 | 59.68 | 59.55 | 50.43 | 45.61 | 25.57 | 18.19 | 36.57 | |||||||||||||
2022 | 0.94 | 6.21 | 21.68 | 32.43 | 47.90 | 54.93 | 59.94 | 58.10 | 49.73 | 36.39 | 27.30 | 15.19 | 34.23 | |||||||||||||
2023 | 20.32 | 13.50 | 20.97 | 34.73 | 43.81 | 55.90 | 59.00 | 58.16 | 53.03 | 40.94 | 26.23 | 26.61 | 37.77 | |||||||||||||
2024 | 17.97 | 21.28 | 24.89 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.38 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 6.33 | 8.95 | 19.90 | 32.57 | 43.65 | 53.47 | 58.11 | 55.89 | 47.37 | 36.59 | 25.33 | 13.35 | 33.28 | |||||||||||||
S.D. | 6.36 | 6.07 | 4.64 | 2.60 | 3.32 | 2.79 | 2.39 | 2.75 | 3.19 | 3.50 | 3.61 | 6.02 | 1.85 | |||||||||||||
SKEW | 0.11 | 0.17 | 0.26 | -0.55 | -0.05 | -0.64 | 0.11 | 0.04 | -0.31 | 0.27 | -0.58 | -0.29 | 0.37 | |||||||||||||
MAX | 22.13 | 23.18 | 33.60 | 37.47 | 50.45 | 59.87 | 63.26 | 63.23 | 53.73 | 46.00 | 32.63 | 27.61 | 37.77 | |||||||||||||
MIN | -9.03 | -4.54 | 9.19 | 23.23 | 37.03 | 44.73 | 52.71 | 49.55 | 39.77 | 27.47 | 14.31 | -3.19 | 29.01 | |||||||||||||
YRS | 71 | 72 | 72 | 70 | 71 | 70 | 71 | 71 | 71 | 71 | 72 | 70 | 64 |