YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.41 | h | 33.66 | a | 13.34 | 23.50 | j | |
1959 | 8.68 | 15.57 | a | 31.35 | a | 44.95 | 58.97 | 67.98 | a | 70.87 | 72.21 | 60.38 | 42.82 | a | 22.93 | 27.02 | 43.64 | |||||||||
1960 | 14.26 | 15.83 | 19.56 | 44.63 | 56.56 | 63.30 | 70.16 | 70.82 | 55.93 | o | 50.48 | 35.92 | 18.84 | 41.85 | a | |||||||||||
1961 | 14.61 | 25.61 | 34.26 | 39.95 | 55.42 | 67.83 | 71.12 | a | 71.97 | 60.60 | 51.83 | a | 33.66 | a | 16.55 | 45.28 | ||||||||||
1962 | 8.98 | 13.98 | 26.62 | c | 43.38 | 64.21 | e | 65.15 | q | 67.52 | g | 68.40 | 55.79 | b | 50.59 | i | 36.42 | e | 22.11 | c | 37.77 | c | ||||
1963 | 6.20 | a | 15.38 | 33.95 | a | 48.22 | 56.50 | 70.02 | 73.02 | 69.05 | a | 63.19 | f | 59.61 | 39.30 | 9.58 | 43.71 | a | ||||||||
1964 | 19.89 | 21.95 | a | 25.26 | 46.18 | 60.34 | b | 66.53 | 73.12 | a | 66.84 | 58.87 | 48.63 | 34.95 | 12.52 | 44.59 | ||||||||||
1965 | 8.31 | 11.27 | 18.52 | 41.18 | 59.19 | 65.45 | 68.03 | 67.24 | 52.10 | 49.85 | 32.57 | 26.32 | 41.67 | |||||||||||||
1966 | 1.95 | 14.14 | 33.92 | 41.02 | 53.26 | 66.73 | 73.45 | 65.94 | 59.03 | 47.34 | 30.00 | i | 17.19 | 43.09 | a | |||||||||||
1967 | 14.71 | 7.54 | 28.82 | 44.40 | 52.03 | 64.88 | 68.26 | 65.02 | 59.28 | 46.82 | 30.22 | a | 21.50 | 41.96 | ||||||||||||
1968 | 12.76 | 13.53 | 37.19 | 47.85 | 52.85 | a | 65.08 | 68.95 | 68.18 | ----- | z | 50.61 | 33.48 | 16.02 | 42.41 | a | ||||||||||
1969 | 8.10 | 18.28 | a | 23.16 | 47.18 | 57.92 | 59.53 | 69.40 | 71.26 | 60.38 | 44.66 | 32.75 | 18.75 | a | 42.61 | |||||||||||
1970 | 4.48 | 14.68 | 23.31 | 43.95 | 56.19 | 68.08 | 71.81 | 68.92 | 59.33 | 48.15 | 30.73 | 17.03 | 42.22 | |||||||||||||
1971 | 5.11 | 15.82 | 25.68 | 45.20 | 53.45 | 69.50 | 66.34 | 66.27 | 61.12 | 52.65 | 32.67 | 17.55 | a | 42.61 | ||||||||||||
1972 | 5.94 | 9.59 | a | 24.98 | 40.63 | 60.82 | 64.18 | 67.79 | 67.89 | 57.18 | 43.61 | 32.70 | 11.35 | 40.56 | ||||||||||||
1973 | 15.69 | 19.45 | 38.61 | 43.95 | 53.63 | 66.80 | 69.44 | 70.87 | 58.12 | 54.00 | 34.00 | 16.08 | 45.05 | |||||||||||||
1974 | 12.30 | a | 15.88 | 28.30 | a | 45.70 | 53.34 | 63.63 | 73.63 | 65.79 | 55.28 | 49.56 | 34.43 | 23.66 | 43.46 | |||||||||||
1975 | 13.55 | a | 16.14 | 22.37 | 37.97 | 59.90 | 66.13 | 72.87 | 68.63 | 56.57 | 51.44 | 35.90 | 17.94 | 43.28 | ||||||||||||
1976 | 7.81 | b | 24.91 | 29.58 | 49.27 | 56.87 | 69.32 | 72.73 | 70.19 | 59.73 | 42.71 | 26.47 | 9.35 | a | 43.24 | |||||||||||
1977 | -0.53 | 20.20 | c | 36.56 | 51.78 | 66.19 | 66.37 | 72.47 | 64.97 | 59.68 | 47.76 | 31.13 | 14.13 | 44.23 | ||||||||||||
1978 | 6.20 | a | 10.57 | 28.21 | 42.78 | 60.26 | 66.20 | 69.92 | 68.90 | 64.20 | 48.67 | a | 30.21 | a | 10.66 | c | 42.23 | |||||||||
1979 | 0.95 | 8.15 | a | 26.29 | 41.42 | 52.95 | 64.90 | 69.87 | 66.66 | 61.58 | 46.26 | 31.15 | 24.45 | 41.22 | ||||||||||||
1980 | 13.02 | 15.29 | 26.76 | b | 47.95 | 60.37 | 65.47 | 71.81 | 68.77 | 58.75 | 44.56 | 34.88 | 17.45 | 43.76 | ||||||||||||
1981 | 14.28 | d | 21.56 | a | 35.57 | a | 47.65 | 55.95 | 65.63 | 70.23 | 68.58 | 58.03 | 45.37 | 36.70 | 16.94 | 44.71 | ||||||||||
1982 | 0.98 | b | 15.07 | a | 26.58 | 42.38 | 60.79 | 61.58 | 72.48 | 68.39 | 58.09 | a | 49.87 | 29.76 | a | 24.34 | 42.53 | |||||||||
1983 | 18.96 | c | 26.31 | a | 32.53 | 40.91 | a | 53.20 | a | 65.75 | b | 74.18 | 72.92 | a | 61.73 | d | 48.98 | 34.36 | a | 4.30 | a | 44.51 | ||||
1984 | 11.52 | 27.11 | b | 24.79 | 46.53 | 55.48 | a | 67.77 | 70.13 | 71.31 | 56.08 | 51.03 | a | 32.98 | b | 17.71 | 44.37 | |||||||||
1985 | 10.38 | c | 15.34 | 34.66 | 50.17 | 61.57 | a | 62.85 | 70.32 | 65.18 | a | 58.25 | 47.23 | 25.22 | a | 7.87 | 42.42 | |||||||||
1986 | 16.67 | b | 15.94 | a | 34.00 | b | 49.19 | a | 59.60 | 67.63 | 73.21 | ----- | z | ----- | z | ----- | z | 29.12 | 23.23 | a | 40.96 | c | ||||
1987 | 20.79 | 31.46 | 38.77 | a | 54.68 | 64.70 | a | 72.55 | a | 75.74 | 69.40 | a | 63.60 | 45.93 | b | 38.03 | 24.29 | 50.00 | ||||||||
1988 | 10.23 | a | 13.00 | 33.19 | 48.08 | 65.06 | 74.68 | b | 77.55 | 74.10 | 63.02 | a | 44.74 | 32.72 | 19.21 | 46.30 | ||||||||||
1989 | 20.44 | 9.88 | 25.53 | a | 45.32 | 58.63 | 67.53 | 74.97 | 71.92 | 62.42 | 51.58 | 28.98 | 10.63 | 43.98 | ||||||||||||
1990 | 26.35 | 22.70 | 35.68 | 48.00 | 57.56 | 69.90 | 71.56 | 71.47 | 64.25 | 48.94 | 37.92 | 17.65 | 47.66 | |||||||||||||
1991 | 12.40 | 25.07 | 34.32 | 50.27 | 62.97 | 72.58 | 72.10 | 72.18 | 60.45 | 47.85 | 24.82 | 21.26 | 46.36 | |||||||||||||
1992 | 20.98 | 28.29 | 33.50 | 43.58 | 62.15 | 66.33 | 66.35 | 66.98 | 60.32 | 48.48 | 31.35 | 21.44 | 45.81 | |||||||||||||
1993 | 14.84 | 18.02 | 29.95 | 44.88 | 58.56 | 64.68 | 70.95 | 71.33 | b | 56.02 | 47.71 | 31.00 | 20.93 | a | 44.07 | |||||||||||
1994 | 4.63 | 12.93 | 35.11 | 47.07 | 61.95 | 70.47 | 70.44 | 68.69 | 64.77 | 52.78 | a | 38.08 | 24.78 | a | 45.98 | |||||||||||
1995 | 18.13 | a | 19.19 | a | 34.90 | a | 42.25 | 57.66 | 71.85 | 72.85 | 74.42 | 60.82 | 49.87 | 26.78 | 17.58 | 45.53 | ||||||||||
1996 | 8.76 | 18.52 | a | 25.26 | 42.32 | 56.60 | 68.33 | 69.87 | 71.77 | 62.02 | 50.44 | 26.00 | 15.13 | 42.92 | ||||||||||||
1997 | 11.06 | 21.57 | a | 31.10 | 44.73 | 55.32 | 70.75 | 71.60 | 68.71 | 63.95 | 52.03 | 29.98 | 28.03 | 45.74 | ||||||||||||
1998 | 20.08 | 32.88 | 33.40 | 52.50 | 66.47 | 66.02 | 73.06 | 72.63 | 68.17 | 52.97 | 38.65 | 26.69 | 50.29 | |||||||||||||
1999 | 13.48 | 28.07 | 35.21 | 50.20 | 62.35 | 68.07 | 76.21 | 70.92 | 62.57 | a | 50.94 | 42.78 | 26.39 | 48.93 | ||||||||||||
2000 | 17.77 | a | 27.81 | 41.31 | 47.42 | 61.85 | 66.33 | 72.44 | 72.56 | 62.30 | 54.66 | 33.22 | 7.68 | 47.11 | ||||||||||||
2001 | 21.72 | a | 14.57 | a | 29.45 | 49.00 | a | 60.77 | 69.32 | 74.89 | 74.10 | 61.83 | 49.90 | 46.80 | 28.34 | 48.39 | ||||||||||
2002 | 25.08 | 28.96 | 25.31 | 46.37 | 54.98 | 70.48 | 76.40 | 70.92 | 65.85 | 43.15 | 33.58 | 26.81 | 47.32 | |||||||||||||
2003 | 16.19 | 15.89 | 31.58 | 48.50 | 58.76 | 67.58 | 72.69 | 74.35 | 63.07 | 51.60 | 33.63 | 25.81 | 46.64 | |||||||||||||
2004 | 10.83 | a | 23.05 | 35.66 | 49.78 | 56.74 | 65.92 | 71.53 | 66.87 | 66.18 | 49.73 | 37.65 | 20.35 | a | 46.19 | |||||||||||
2005 | 13.31 | 24.70 | 30.21 | 49.73 | 54.26 | 71.07 | 73.60 | 70.55 | 65.57 | 52.05 | 35.63 | 19.24 | 46.66 | |||||||||||||
2006 | 27.40 | 17.62 | 32.56 | 51.70 | 59.74 | 68.32 | 76.02 | 70.45 | 58.68 | 45.75 | a | 35.90 | 27.27 | 47.62 | ||||||||||||
2007 | 18.60 | 11.07 | 35.42 | 45.37 | 61.53 | 70.12 | 73.10 | 69.68 | 62.43 | 53.66 | 34.10 | 15.15 | 45.85 | |||||||||||||
2008 | 12.39 | 13.88 | 25.82 | 41.65 | 54.05 | 66.03 | 71.06 | 69.44 | 62.45 | 48.94 | 34.52 | 12.15 | 42.70 | |||||||||||||
2009 | 5.11 | 19.34 | 29.68 | 45.23 | 57.18 | 65.43 | 66.74 | 67.52 | 66.75 | 42.39 | 41.63 | 16.55 | 43.63 | |||||||||||||
2010 | 11.90 | 17.66 | 38.94 | 52.37 | 59.05 | 66.32 | 72.76 | 73.69 | 58.02 | 52.50 | 33.83 | 14.58 | 45.97 | |||||||||||||
2011 | 9.92 | 16.82 | 27.00 | 44.32 | 55.79 | 65.77 | 75.89 | 71.03 | 60.45 | 54.50 | 37.90 | 25.97 | 45.45 | |||||||||||||
2012 | 21.15 | 26.93 | 45.58 | 47.98 | 61.42 | 69.30 | 76.79 | 69.61 | 62.07 | 46.32 | 35.48 | 22.00 | 48.72 | |||||||||||||
2013 | 15.35 | 16.79 | 24.61 | 37.37 | 55.31 | 65.92 | 71.37 | 71.81 | 65.08 | 48.95 | 31.40 | 9.75 | a | 42.81 | ||||||||||||
2014 | 4.74 | 7.07 | 22.39 | 40.40 | 56.39 | 67.77 | 69.52 | 70.53 | 61.78 | 48.95 | 25.22 | 23.85 | 41.55 | |||||||||||||
2015 | 16.65 | 9.48 | 33.26 | 47.72 | 57.23 | 66.97 | 71.73 | 68.63 | 67.37 | 50.81 | 41.27 | 29.71 | 46.73 | |||||||||||||
2016 | 15.44 | 23.43 | 39.19 | 46.18 | 59.15 | 68.33 | 72.32 | 71.68 | 64.32 | 51.87 | 43.77 | 19.23 | 47.91 | |||||||||||||
2017 | 19.68 | 27.77 | 31.48 | 48.23 | 56.45 | 67.93 | a | 72.79 | 66.89 | 65.25 | 51.11 | 30.87 | 16.40 | 46.24 | ||||||||||||
2018 | 9.72 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.12 | r | 28.02 | a | 19.82 | 23.92 | j | |
2020 | 17.24 | 17.29 | 33.23 | 41.53 | a | 56.70 | a | 69.98 | 74.47 | 70.97 | 58.70 | 40.71 | 36.47 | a | 21.70 | a | 44.92 | |||||||||
2021 | 17.97 | 8.93 | 36.31 | 43.98 | 56.76 | 73.03 | 73.13 | 72.05 | 62.83 | 53.82 | 33.92 | 20.63 | 46.11 | |||||||||||||
2022 | 5.48 | 8.95 | 27.71 | 37.95 | 58.15 | 68.73 | 72.50 | 69.47 | 62.68 | 49.00 | 33.27 | 14.63 | 42.38 | |||||||||||||
2023 | 17.81 | j | 16.66 | 24.58 | 41.30 | 60.63 | 71.83 | 71.61 | i | 70.48 | 65.87 | 50.55 | 34.30 | 31.29 | 46.75 | b | ||||||||||
2024 | 18.85 | 29.78 | 34.04 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.56 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.03 | 18.30 | 30.82 | 45.62 | 58.27 | 67.51 | 71.98 | 69.82 | 61.22 | 49.18 | 33.56 | 19.03 | 44.90 | |||||||||||||
S.D. | 6.41 | 6.51 | 5.53 | 3.85 | 3.48 | 2.83 | 2.53 | 2.44 | 3.33 | 3.55 | 4.63 | 6.04 | 2.30 | |||||||||||||
SKEW | -0.03 | 0.34 | 0.04 | -0.03 | 0.34 | 0.04 | -0.09 | -0.12 | -0.17 | -0.09 | 0.20 | -0.18 | 0.30 | |||||||||||||
MAX | 27.40 | 32.88 | 45.58 | 54.68 | 66.47 | 74.68 | 77.55 | 74.42 | 68.17 | 59.61 | 46.80 | 31.29 | 50.29 | |||||||||||||
MIN | -0.53 | 7.07 | 18.52 | 37.37 | 52.03 | 59.53 | 66.34 | 64.97 | 52.10 | 40.71 | 22.93 | 4.30 | 40.56 | |||||||||||||
YRS | 63 | 64 | 64 | 63 | 63 | 62 | 61 | 62 | 59 | 61 | 64 | 65 | 56 |