YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.95 | i | 66.62 | a | 55.53 | 46.05 | 28.45 | 12.68 | 41.87 | g | ||||
1962 | 3.76 | 9.29 | 26.26 | 37.42 | 53.97 | 59.95 | 62.94 | 63.65 | 53.18 | 46.13 | 32.97 | 13.61 | 38.59 | |||||||||||||
1963 | -0.16 | 7.04 | 28.47 | 41.55 | 50.89 | 63.60 | 67.42 | 63.24 | 56.82 | 53.24 | 33.12 | 6.60 | 39.32 | |||||||||||||
1964 | 15.50 | 16.33 | 20.71 | 41.77 | 56.63 | a | 60.98 | 68.66 | 60.92 | 54.47 | 44.75 | a | 30.37 | 7.98 | 39.92 | |||||||||||
1965 | 3.45 | 5.41 | 14.40 | 39.30 | 53.40 | 59.60 | 64.15 | 62.65 | a | 48.20 | 46.03 | 27.85 | 21.06 | 37.13 | ||||||||||||
1966 | -2.90 | 11.43 | 28.95 | 36.25 | 49.19 | 62.52 | 69.94 | 63.08 | 55.57 | 43.45 | 26.28 | 12.81 | 38.05 | |||||||||||||
1967 | 9.89 | 3.77 | 26.10 | 39.13 | 47.05 | 60.85 | 65.18 | 62.45 | 56.42 | 42.98 | 26.50 | 15.53 | 37.99 | |||||||||||||
1968 | 9.02 | 10.38 | 33.24 | 42.10 | 50.37 | 60.58 | 65.77 | 64.16 | 56.62 | 47.19 | 29.78 | 11.74 | 40.08 | |||||||||||||
1969 | 5.21 | 14.16 | 20.66 | 42.18 | 52.63 | 55.18 | 64.73 | 67.55 | 56.47 | 40.40 | 28.45 | 16.77 | 38.70 | |||||||||||||
1970 | 2.92 | a | 11.04 | 18.79 | 38.13 | 49.87 | 63.03 | 68.77 | 65.50 | 56.20 | 45.23 | 27.22 | 10.73 | 38.12 | ||||||||||||
1971 | -0.32 | 12.57 | 22.40 | 39.55 | 49.95 | 64.38 | 62.15 | 62.23 | 56.70 | 48.74 | 28.25 | 13.42 | 38.33 | |||||||||||||
1972 | -0.55 | 5.57 | 19.74 | 35.37 | 56.45 | 60.18 | 64.13 | 64.06 | 52.83 | 41.16 | 27.37 | 7.66 | 36.17 | |||||||||||||
1973 | 11.55 | 14.73 | 34.77 | 40.05 | 51.10 | 61.18 | 65.21 | 67.39 | 54.42 | 49.00 | 29.05 | 12.85 | 40.94 | |||||||||||||
1974 | 6.50 | 12.00 | 22.21 | 40.88 | 49.10 | 60.37 | 69.03 | 61.69 | 50.18 | 44.95 | 30.60 | 20.31 | 38.99 | |||||||||||||
1975 | 8.92 | 12.98 | 18.68 | 33.72 | 55.87 | 60.79 | a | 69.52 | 63.45 | 52.68 | 47.34 | 30.47 | 12.05 | a | 38.87 | |||||||||||
1976 | 4.89 | 21.57 | 23.27 | 45.27 | 52.21 | 63.63 | 67.18 | 66.61 | 56.47 | 37.03 | 20.75 | 4.24 | 38.59 | |||||||||||||
1977 | -2.08 | a | 16.45 | 32.87 | 46.53 | 60.42 | 62.28 | 68.13 | 59.37 | 54.72 | 44.48 | 27.72 | 10.87 | 40.15 | ||||||||||||
1978 | 3.47 | 8.20 | 24.89 | 39.85 | 55.56 | 60.77 | 65.26 | 64.31 | 58.65 | 45.03 | 25.52 | 7.94 | 38.29 | |||||||||||||
1979 | -2.84 | 4.36 | 23.08 | 35.87 | 47.74 | 59.27 | 65.92 | 61.94 | 56.80 | 41.65 | 26.73 | 19.82 | 36.69 | |||||||||||||
1980 | 7.19 | 10.09 | 20.34 | 44.43 | a | 56.55 | 61.17 | 67.87 | 64.66 | 53.68 | 40.13 | 29.80 | 11.74 | 38.97 | ||||||||||||
1981 | 11.92 | 18.23 | 31.37 | 42.25 | 52.18 | 60.38 | 66.23 | 64.95 | 53.88 | 41.92 | 34.50 | 13.84 | 40.97 | |||||||||||||
1982 | -4.24 | 10.12 | 22.58 | 37.23 | 55.55 | 56.58 | 67.24 | 63.12 | a | 55.65 | 46.34 | 24.97 | a | 20.39 | 37.96 | |||||||||||
1983 | 13.11 | 21.71 | 28.71 | 38.65 | 49.23 | 61.22 | a | 70.32 | 70.00 | 57.78 | 44.19 | b | 29.02 | a | -0.27 | 40.31 | ||||||||||
1984 | 8.42 | e | 24.12 | a | 21.30 | a | 42.68 | 51.65 | 62.73 | 66.08 | a | 68.95 | 52.43 | a | 47.23 | a | 29.22 | 12.76 | b | 40.63 | ||||||
1985 | 7.72 | b | 11.45 | 32.08 | 46.17 | d | 56.10 | 57.02 | a | 64.98 | 60.87 | 54.18 | 43.48 | a | 21.91 | a | 3.28 | b | 38.27 | |||||||
1986 | 13.36 | b | 11.37 | a | 30.83 | d | 44.38 | a | 55.55 | b | 61.78 | 67.71 | 61.84 | 54.83 | 44.89 | 24.62 | 18.03 | 40.77 | ||||||||
1987 | 15.71 | 26.25 | 33.62 | a | 48.48 | 56.34 | 65.10 | 69.94 | 65.03 | a | 58.30 | 41.02 | 32.72 | 20.48 | 44.42 | |||||||||||
1988 | 4.53 | 7.88 | 26.62 | a | 42.13 | 58.97 | a | 66.43 | a | 70.61 | 66.86 | c | 57.37 | g | 40.08 | g | 30.42 | f | 13.09 | d | 39.68 | c | ||||
1989 | 13.97 | b | 3.00 | 19.37 | d | 37.93 | g | 53.07 | h | 59.86 | e | 68.50 | d | 64.84 | b | 56.50 | 44.90 | a | 23.43 | 5.32 | a | 35.97 | b | |||
1990 | 20.08 | a | 16.32 | 29.02 | 42.18 | 50.56 | 62.53 | 64.60 | a | 65.11 | 56.34 | a | 42.95 | 31.77 | 13.43 | a | 41.24 | |||||||||
1991 | 6.87 | a | 19.96 | 27.87 | 44.63 | 56.48 | 63.67 | 65.37 | 67.03 | 54.73 | 41.42 | 21.22 | 15.37 | 40.39 | ||||||||||||
1992 | 16.02 | 22.26 | 28.16 | 38.47 | 55.44 | 57.93 | 59.56 | 60.03 | 54.63 | 42.84 | 27.07 | 14.98 | a | 39.78 | ||||||||||||
1993 | 9.83 | b | 13.44 | a | 26.02 | 39.27 | 51.52 | 57.47 | a | 63.40 | b | 64.94 | 49.77 | b | 41.42 | 24.19 | a | 15.29 | 38.04 | |||||||
1994 | -2.69 | 7.09 | 29.98 | 41.00 | 54.77 | 63.32 | 64.17 | a | 62.37 | a | 58.28 | 47.77 | 33.08 | 19.76 | 39.91 | |||||||||||
1995 | 11.71 | 11.30 | a | 28.60 | a | 35.26 | a | 51.71 | 65.48 | 65.61 | c | 67.43 | b | 53.93 | a | 43.50 | a | 20.27 | 9.98 | b | 38.73 | |||||
1996 | 0.48 | 10.97 | 18.65 | 35.31 | a | 49.93 | a | 62.03 | 63.64 | b | 65.82 | a | 56.33 | a | 44.66 | 21.53 | 9.55 | 36.57 | ||||||||
1997 | 6.25 | a | 15.23 | 24.69 | 38.15 | 47.83 | a | 63.48 | 64.98 | 61.53 | 57.97 | 45.39 | 24.40 | 22.83 | a | 39.40 | ||||||||||
1998 | 14.92 | 28.43 | 28.29 | 44.36 | a | 58.12 | a | 59.80 | 65.61 | 67.40 | 60.10 | a | 47.63 | 32.50 | 19.58 | 43.90 | ||||||||||
1999 | 9.21 | 22.88 | 30.44 | 43.70 | 55.23 | 62.88 | 69.05 | 64.65 | 56.13 | 44.05 | 36.98 | 20.84 | 43.00 | |||||||||||||
2000 | 11.52 | 22.50 | 35.53 | 41.12 | 55.58 | 57.87 | 66.05 | 65.52 | 55.32 | 48.55 | 29.97 | a | 4.08 | a | 41.13 | |||||||||||
2001 | 17.71 | 7.41 | a | 24.87 | 42.85 | 55.06 | 62.98 | 67.15 | 67.42 | 56.10 | 44.11 | 40.18 | 22.85 | 42.39 | ||||||||||||
2002 | 18.21 | b | 23.79 | 19.77 | 39.82 | 48.92 | 64.77 | 69.53 | 65.24 | 59.52 | 37.66 | 27.32 | 21.35 | 41.32 | ||||||||||||
2003 | 10.34 | 11.00 | 25.22 | b | ----- | z | ----- | z | 63.29 | i | 67.07 | a | 68.60 | 58.15 | 45.87 | a | 27.88 | 21.76 | b | 37.32 | c | |||||
2004 | 5.47 | a | 18.76 | 29.13 | 42.32 | 49.68 | 58.55 | b | 65.34 | f | 59.40 | b | 61.60 | 46.66 | b | 33.77 | 15.38 | a | 38.25 | a | ||||||
2005 | 7.70 | a | 20.04 | 25.35 | 46.31 | a | 50.36 | c | 65.17 | 69.03 | a | 66.20 | a | 61.57 | ----- | z | ----- | z | ----- | z | 45.75 | c | ||||
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.13 | d | 25.83 | e | 28.98 | j |
2007 | 13.83 | d | 8.48 | f | 30.50 | g | 41.52 | g | 55.59 | h | 65.19 | d | 67.54 | h | 64.17 | h | 59.50 | h | 48.33 | d | 30.86 | h | 12.10 | f | 42.45 | i |
2008 | 8.50 | i | 11.02 | h | 22.37 | h | 38.70 | h | 49.41 | h | 61.58 | f | 65.11 | h | 64.48 | e | 56.66 | h | 45.61 | h | 30.48 | f | 8.07 | j | 64.48 | k |
2009 | 3.70 | f | 16.02 | g | 27.39 | i | 41.30 | e | 52.33 | j | 59.63 | d | 61.02 | e | 62.21 | g | 60.67 | g | 38.71 | g | 37.64 | b | 11.91 | c | 42.30 | g |
2010 | 11.73 | e | 16.00 | a | 38.10 | f | 48.21 | f | 55.08 | f | 61.35 | d | ----- | z | ----- | z | ----- | z | 39.97 | o | 29.58 | 10.13 | 25.76 | g | ||
2011 | 3.03 | 11.32 | 20.95 | 37.28 | a | 48.85 | a | 57.57 | 67.24 | 64.11 | 54.38 | a | 46.52 | 31.12 | a | 19.15 | a | 38.46 | ||||||||
2012 | 14.98 | a | 20.62 | 37.31 | 40.38 | 52.87 | 61.45 | 67.59 | t | ----- | z | 53.18 | b | 40.82 | 28.47 | 15.76 | 36.58 | b | ||||||||
2013 | 9.08 | 9.50 | 18.48 | a | 30.40 | 48.05 | 58.45 | 64.29 | 64.16 | 57.18 | 42.60 | 24.85 | 1.53 | 35.71 | ||||||||||||
2014 | -2.39 | -0.12 | 14.00 | 33.25 | 49.98 | 59.75 | 62.55 | 62.44 | 55.25 | 43.24 | 19.37 | 19.50 | 34.73 | |||||||||||||
2015 | 11.10 | 2.04 | 26.85 | 39.70 | 49.73 | 59.24 | a | 65.15 | 62.18 | 60.47 | 44.68 | 35.52 | 23.81 | 40.04 | ||||||||||||
2016 | 9.87 | 15.26 | 31.55 | 38.25 | 51.84 | 59.03 | 64.50 | 64.38 | a | 57.28 | 45.47 | 37.85 | 14.10 | 40.78 | ||||||||||||
2017 | 13.05 | b | 18.69 | a | 23.92 | 40.48 | 48.92 | 59.15 | 63.98 | a | 58.90 | j | 57.76 | a | 45.02 | 23.58 | 10.08 | 36.78 | a | |||||||
2018 | 6.52 | a | 4.79 | 22.65 | a | 28.08 | 55.69 | 60.23 | 65.53 | 63.81 | 55.95 | 38.50 | 20.58 | 18.90 | 36.77 | |||||||||||
2019 | 3.53 | 4.57 | 18.87 | a | 36.55 | 46.08 | a | 58.27 | 64.65 | 59.67 | a | 55.10 | 41.13 | 23.20 | 13.97 | 35.46 | ||||||||||
2020 | 12.44 | 10.90 | 24.73 | a | 35.52 | 49.16 | 59.92 | 67.13 | 64.79 | 53.07 | 36.08 | 31.65 | 16.05 | 38.45 | ||||||||||||
2021 | 14.13 | 3.79 | 32.00 | 37.87 | 49.63 | 61.88 | 65.13 | 65.68 | 56.98 | 49.48 | a | 29.32 | 15.58 | 40.12 | ||||||||||||
2022 | -1.11 | 1.62 | 20.11 | 29.98 | 49.98 | 59.47 | 63.85 | 63.66 | 56.00 | 43.90 | 28.16 | a | 11.26 | 35.57 | ||||||||||||
2023 | 14.26 | 11.50 | 19.63 | 36.83 | 54.40 | 63.67 | 64.65 | a | 63.47 | 61.57 | 45.23 | 29.45 | 28.88 | a | 41.13 | |||||||||||
2024 | 14.83 | a | 27.41 | 27.92 | 40.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.77 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 8.01 | 13.06 | 25.46 | 39.70 | 52.38 | 61.08 | 66.04 | 64.27 | 55.87 | 44.29 | 28.51 | 14.35 | 39.21 | |||||||||||||
S.D. | 6.17 | 7.00 | 5.38 | 4.15 | 3.38 | 2.46 | 2.41 | 2.42 | 2.70 | 3.22 | 4.65 | 6.10 | 2.09 | |||||||||||||
SKEW | -0.26 | 0.28 | 0.06 | -0.48 | 0.29 | 0.04 | -0.11 | 0.02 | -0.19 | -0.20 | 0.17 | -0.13 | 0.14 | |||||||||||||
MAX | 20.08 | 28.43 | 37.31 | 48.48 | 60.42 | 66.43 | 70.61 | 70.00 | 61.60 | 53.24 | 40.18 | 28.88 | 44.42 | |||||||||||||
MIN | -4.24 | -0.13 | 14.00 | 28.08 | 46.08 | 55.18 | 59.56 | 59.37 | 48.20 | 36.08 | 19.37 | -0.27 | 34.73 | |||||||||||||
YRS | 60 | 59 | 58 | 57 | 55 | 59 | 56 | 57 | 57 | 57 | 59 | 60 | 50 |