YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.92 | 16.80 | a | 25.36 | j | |
1963 | 2.27 | 11.36 | 32.39 | 44.43 | 53.45 | 67.80 | 70.50 | 68.87 | 59.70 | ----- | z | 32.18 | 6.24 | 40.84 | a | |||||||||||
1964 | 13.23 | 18.14 | 19.80 | a | 43.81 | f | 59.74 | b | 67.10 | f | 70.57 | x | 64.87 | d | 55.00 | 45.26 | 29.13 | 3.78 | a | 34.33 | c | |||||
1965 | -1.92 | a | 6.12 | b | 13.29 | 41.03 | 54.33 | d | 63.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.42 | f | |||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 55.89 | i | 66.63 | d | 72.81 | 65.77 | 59.12 | 46.19 | 23.73 | b | 11.42 | a | 49.38 | e | ||||
1967 | 9.31 | 6.00 | c | ----- | z | 39.53 | 52.52 | b | 63.20 | b | 68.67 | e | 66.85 | 61.25 | 45.53 | 29.95 | 15.27 | 41.64 | a | |||||||
1968 | 8.90 | b | 9.57 | 34.81 | 44.23 | 53.27 | 64.02 | c | 68.98 | 68.05 | 58.93 | 47.27 | 31.12 | 9.00 | 41.51 | |||||||||||
1969 | -1.39 | 13.89 | a | 15.84 | 45.38 | 57.48 | a | 58.42 | 68.72 | d | 72.94 | 60.38 | 41.18 | 31.40 | 15.65 | 39.99 | ||||||||||
1970 | 0.89 | 7.56 | k | 20.17 | j | 41.20 | 54.55 | b | 68.80 | 72.58 | 70.18 | 61.17 | 46.84 | 27.59 | a | 9.23 | 45.30 | b | ||||||||
1971 | -1.13 | 14.44 | c | 26.55 | 45.17 | 54.40 | 67.97 | 66.26 | b | 68.55 | 59.92 | 48.53 | 29.38 | 10.54 | c | 40.88 | ||||||||||
1972 | 1.77 | 4.03 | 23.97 | 40.83 | 60.12 | b | 67.10 | 67.50 | f | 69.43 | a | 58.03 | a | 44.29 | 27.97 | a | 4.62 | b | 36.56 | a | ||||||
1973 | 11.82 | c | 17.77 | 37.63 | 43.22 | a | 56.17 | d | 66.60 | 69.37 | 72.82 | 56.25 | b | 51.92 | 26.70 | 11.15 | 43.45 | |||||||||
1974 | 1.60 | 11.91 | 22.98 | d | 43.27 | 53.81 | d | 65.67 | 74.10 | 65.23 | 55.03 | 48.84 | 30.70 | 21.00 | 41.18 | |||||||||||
1975 | 11.18 | 10.61 | 18.71 | 35.89 | b | 57.98 | c | 65.37 | 74.60 | 68.67 | a | 55.67 | a | 50.26 | 32.32 | 14.76 | 41.33 | |||||||||
1976 | 8.68 | 22.97 | 23.85 | a | 48.03 | a | 56.91 | b | 67.81 | d | 70.21 | n | 72.35 | u | 60.57 | 41.50 | 24.38 | 6.80 | a | 36.15 | b | |||||
1977 | -4.37 | a | 18.19 | a | 31.78 | b | 50.08 | 66.21 | b | 66.42 | 71.95 | 63.60 | 57.68 | 47.47 | b | 25.88 | j | 7.56 | 43.32 | a | ||||||
1978 | 0.20 | d | 4.77 | 23.17 | a | 42.88 | b | 59.50 | e | 65.30 | b | 69.52 | a | 69.55 | 64.09 | b | ----- | z | 22.85 | 6.27 | 38.92 | a | ||||
1979 | -5.03 | -2.18 | 20.21 | 35.40 | 50.76 | 65.62 | 70.27 | 65.65 | ----- | z | ----- | z | ----- | z | 29.78 | v | 37.59 | d | ||||||||
1980 | 10.39 | i | 11.70 | b | 23.29 | 50.75 | j | 61.24 | 64.48 | a | 70.31 | b | 67.12 | c | ----- | z | 44.04 | d | 33.37 | 13.67 | a | 43.25 | c | |||
1981 | 14.30 | a | 20.61 | 34.93 | c | 47.44 | f | 56.10 | 63.58 | d | 69.53 | 68.65 | h | 56.38 | b | 44.55 | 35.23 | 9.76 | d | 40.50 | b | |||||
1982 | -7.24 | d | 8.91 | 22.21 | g | 42.26 | a | 59.17 | b | 59.57 | 69.60 | a | 67.83 | h | 56.83 | c | 45.42 | 24.08 | e | 20.45 | a | 37.91 | b | |||
1983 | 14.75 | e | 21.79 | 30.32 | a | 41.12 | 51.98 | a | 66.32 | 73.13 | a | 74.67 | b | 59.02 | 45.90 | 31.69 | a | 0.17 | k | 46.43 | a | |||||
1984 | 8.05 | b | 23.97 | 23.57 | a | 44.78 | 54.98 | 65.28 | 69.79 | l | 73.40 | 54.78 | 47.48 | 29.92 | 9.29 | 39.59 | a | |||||||||
1985 | 6.27 | a | 11.32 | 32.90 | a | 47.65 | 60.44 | 60.69 | a | 68.87 | 64.44 | 54.10 | 44.76 | 14.98 | 2.06 | 39.04 | ||||||||||
1986 | 12.40 | a | ----- | z | 31.45 | c | 43.72 | a | 58.76 | 66.18 | 70.61 | 65.20 | a | 55.97 | 46.33 | a | 21.59 | a | 20.39 | 44.78 | a | |||||
1987 | 17.26 | 26.21 | b | 31.05 | 51.70 | 61.27 | a | 68.97 | a | 73.47 | a | 67.00 | 59.76 | a | 42.58 | a | 33.02 | b | 20.30 | a | 46.05 | |||||
1988 | 5.25 | a | 7.72 | b | 29.13 | 45.95 | a | 64.07 | a | 74.50 | b | 75.95 | ----- | z | 58.97 | 42.95 | a | 26.31 | c | 13.81 | b | 40.42 | a | |||
1989 | 11.06 | e | 0.98 | a | ----- | z | ----- | z | 59.34 | 64.45 | 75.09 | b | 69.97 | 59.23 | 46.13 | 22.48 | 2.58 | 41.13 | b | |||||||
1990 | 21.93 | a | 15.91 | 31.11 | 44.02 | 54.47 | a | 66.45 | 69.06 | ----- | z | 64.02 | 48.30 | u | 31.31 | a | 11.37 | 40.97 | b | |||||||
1991 | 5.39 | 19.86 | 30.10 | a | 47.43 | 61.13 | 70.25 | 70.24 | 72.48 | 58.78 | 42.98 | a | 21.87 | 17.82 | 43.19 | |||||||||||
1992 | 16.35 | 22.48 | 32.05 | 41.21 | a | 59.63 | a | 62.32 | 63.69 | 64.63 | 57.00 | 44.60 | 26.28 | a | 10.04 | f | 44.57 | a | ||||||||
1993 | 6.00 | a | 8.98 | 24.58 | 43.25 | 56.15 | a | 62.12 | a | 65.66 | 68.81 | 54.48 | a | 44.48 | c | 24.85 | 14.48 | 39.49 | ||||||||
1994 | -5.13 | 5.67 | d | 29.84 | 42.96 | c | 60.06 | 67.73 | 67.10 | 66.32 | 61.37 | 49.84 | c | 33.30 | 19.45 | a | 41.54 | |||||||||
1995 | 9.84 | c | 11.05 | 27.04 | e | 39.22 | a | 55.52 | a | 71.05 | a | 69.92 | a | 71.95 | 58.62 | 44.02 | a | 21.07 | b | 9.85 | d | 40.76 | ||||
1996 | -2.61 | 9.73 | c | 16.74 | 37.12 | b | 53.45 | a | 68.11 | b | 68.92 | a | 70.26 | 58.72 | 46.08 | 17.10 | a | 4.23 | 37.32 | |||||||
1997 | 1.00 | c | 11.08 | b | 19.21 | 37.85 | 52.37 | a | 68.81 | a | 69.58 | 67.45 | a | 62.10 | 48.28 | a | 23.72 | a | 24.05 | 40.46 | ||||||
1998 | 10.09 | b | 27.67 | a | 27.33 | b | 49.65 | 61.89 | 63.63 | 71.56 | 71.94 | 63.35 | 47.79 | 28.78 | a | 17.87 | a | 45.13 | ||||||||
1999 | 4.91 | c | 22.20 | 32.11 | 45.58 | 57.53 | 66.80 | 71.81 | 68.57 | a | 56.00 | 44.88 | a | 37.22 | 23.88 | c | 44.29 | |||||||||
2000 | 8.57 | c | 21.89 | b | 36.29 | b | 43.36 | a | 58.00 | a | 63.22 | a | 70.98 | 69.80 | a | 58.40 | 49.40 | b | 26.83 | a | 0.23 | 42.25 | ||||
2001 | 14.53 | a | 4.91 | a | 23.26 | 44.74 | a | 59.00 | 66.38 | 72.11 | 71.82 | a | 59.72 | 45.28 | b | 39.45 | a | 19.68 | a | 43.41 | ||||||
2002 | 17.69 | b | 24.31 | a | 20.07 | a | 40.66 | a | 50.04 | c | 69.07 | 73.63 | a | 68.44 | 62.47 | 37.27 | 27.38 | a | 18.47 | b | 42.46 | |||||
2003 | 8.82 | 7.65 | a | 24.68 | a | 45.37 | 55.76 | 65.50 | 70.50 | 73.27 | 59.90 | a | 49.78 | a | 24.73 | b | 17.77 | a | 41.98 | |||||||
2004 | 1.55 | 14.78 | b | 30.47 | 44.85 | 52.82 | a | 62.98 | 68.26 | 62.55 | ----- | z | 48.84 | b | 34.07 | 17.12 | b | 39.84 | a | |||||||
2005 | 4.95 | a | 16.19 | a | 28.52 | b | 49.31 | a | 54.57 | a | 68.53 | 71.95 | 67.82 | 63.17 | 48.40 | 32.26 | a | 16.46 | c | 43.51 | ||||||
2006 | 22.63 | a | 9.15 | a | 25.97 | 51.14 | a | 58.07 | b | 68.40 | 74.50 | 69.70 | a | 58.42 | ----- | z | 31.88 | 24.37 | 44.93 | a | ||||||
2007 | 12.23 | 5.11 | 33.09 | d | 41.83 | 61.02 | a | 69.17 | a | 72.89 | 67.31 | 60.78 | 50.15 | 30.67 | 9.00 | f | 45.84 | a | ||||||||
2008 | 8.18 | f | 7.50 | e | 22.48 | b | 41.02 | 53.18 | 63.95 | 70.00 | a | ----- | z | 59.27 | 47.19 | 30.83 | 4.37 | 39.98 | b | |||||||
2009 | -1.48 | e | 10.39 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.45 | j |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.94 | u | 76.19 | 68.68 | 59.65 | 43.42 | 29.83 | 13.39 | 48.53 | f | ||||||
2013 | 9.26 | 10.73 | 16.47 | 32.80 | 57.26 | 66.97 | 71.21 | 69.68 | 63.52 | 44.84 | 27.48 | 1.85 | 39.34 | |||||||||||||
2014 | 1.84 | 3.30 | 21.69 | 40.28 | 56.77 | 67.22 | 69.06 | 68.82 | 59.73 | 47.52 | 22.33 | 19.48 | 39.84 | |||||||||||||
2015 | 14.21 | 6.54 | e | 33.23 | 47.53 | 54.55 | 67.03 | 71.68 | 68.15 | 63.90 | 50.16 | 35.43 | 21.39 | 44.48 | ||||||||||||
2016 | 11.40 | 21.93 | a | 37.61 | 41.04 | e | 60.11 | 67.28 | 71.37 | 69.26 | 60.62 | 48.45 | 40.80 | 12.71 | 45.22 | |||||||||||
2017 | 12.58 | 23.18 | 29.27 | 44.40 | 55.79 | 67.37 | 71.45 | 65.45 | 61.33 | 47.89 | 28.35 | 12.37 | 43.29 | |||||||||||||
2018 | 9.92 | 6.36 | 26.25 | y | 34.65 | 63.47 | 70.32 | 70.56 | 68.73 | 59.15 | 40.40 | 21.27 | 18.73 | 42.14 | a | |||||||||||
2019 | 5.34 | -0.88 | 19.40 | 42.48 | a | 52.56 | 66.47 | 72.10 | 66.95 | 60.95 | 41.69 | 27.27 | 25.20 | f | 41.30 | a | ||||||||||
2020 | 8.86 | b | ----- | z | ----- | z | ----- | z | ----- | z | 71.48 | 73.35 | 69.74 | 58.45 | 39.61 | 33.32 | 20.85 | 46.96 | d | |||||||
2021 | 18.61 | 6.70 | 37.08 | 42.37 | 56.74 | 71.78 | 74.10 | 71.34 | 63.82 | 51.23 | 32.12 | 14.18 | 45.00 | |||||||||||||
2022 | 3.16 | 5.30 | 26.13 | 36.45 | 56.16 | 69.52 | 72.08 | a | 69.60 | 62.02 | 47.55 | 26.80 | 9.45 | a | 40.35 | |||||||||||
2023 | 10.63 | 10.95 | 14.74 | 35.02 | 63.48 | 71.95 | 68.45 | 69.53 | b | 65.00 | 46.73 | 31.93 | 28.82 | 43.10 | ||||||||||||
2024 | 14.39 | 28.59 | 29.94 | 45.29 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 7.42 | 12.73 | 26.71 | 42.85 | 57.09 | 66.54 | 70.92 | 68.66 | 59.49 | 46.04 | 28.69 | 13.53 | 42.06 | |||||||||||||
S.D. | 7.06 | 7.65 | 6.36 | 4.31 | 3.60 | 3.09 | 2.53 | 2.71 | 2.74 | 3.08 | 5.18 | 6.74 | 2.15 | |||||||||||||
SKEW | -0.06 | 0.31 | -0.20 | -0.18 | 0.29 | -0.15 | -0.24 | 0.01 | -0.03 | -0.49 | -0.22 | -0.07 | -0.07 | |||||||||||||
MAX | 22.63 | 28.59 | 37.63 | 51.70 | 66.21 | 74.50 | 76.19 | 74.67 | 65.00 | 51.92 | 40.80 | 28.82 | 46.05 | |||||||||||||
MIN | -7.24 | -2.18 | 13.29 | 32.80 | 50.04 | 58.42 | 63.69 | 62.55 | 54.10 | 37.27 | 14.98 | 0.23 | 37.32 | |||||||||||||
YRS | 56 | 55 | 51 | 51 | 55 | 56 | 53 | 51 | 54 | 52 | 56 | 53 | 29 |