YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.69 | a | 46.02 | 32.03 | 14.83 | e | 36.14 | h | ||
1963 | -2.28 | h | 5.30 | a | 26.73 | 40.92 | 49.57 | a | 61.71 | b | 66.44 | d | 61.97 | p | 56.15 | ----- | z | ----- | z | ----- | z | 43.83 | e | |||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.31 | b | 58.56 | 51.68 | 42.71 | 27.75 | d | 5.67 | a | 42.11 | f | |||
1965 | 1.73 | 3.89 | 12.60 | 36.68 | 51.87 | 56.35 | 62.61 | l | 59.65 | 47.32 | 44.63 | 25.76 | a | 20.89 | 32.85 | a | ||||||||||
1966 | -2.73 | 8.89 | 26.71 | e | 33.88 | 47.18 | 61.32 | 67.92 | a | 60.55 | b | 52.53 | ----- | z | 23.98 | f | 11.56 | 36.78 | b | |||||||
1967 | 8.00 | 2.38 | c | 24.15 | a | 35.60 | a | 42.38 | a | 56.50 | 61.23 | 59.70 | d | 51.78 | ----- | z | 23.88 | e | ----- | z | 36.56 | b | ||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.15 | d | 53.97 | 45.83 | a | 27.24 | a | 10.35 | 39.31 | g | ||
1969 | 5.23 | 11.48 | c | 18.34 | b | 40.04 | c | 50.73 | a | 51.71 | d | 62.15 | e | 64.43 | c | 53.62 | b | 38.35 | a | 28.80 | h | 15.67 | b | 37.43 | a | |
1970 | 0.64 | b | 7.37 | b | 16.45 | 36.55 | 47.91 | d | 60.50 | a | 66.12 | b | 61.95 | 53.67 | 44.40 | a | 24.50 | 10.02 | 35.84 | |||||||
1971 | -2.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.98 | c | 47.02 | b | 26.95 | 13.26 | 27.69 | g | |||
1972 | -0.15 | a | 5.26 | 18.27 | 35.47 | 56.53 | a | 60.35 | 62.57 | a | 63.03 | a | 52.00 | b | 40.82 | 26.83 | a | 6.55 | b | 35.63 | ||||||
1973 | 11.90 | 14.04 | a | 34.76 | 39.12 | 50.24 | 61.18 | 64.47 | 66.26 | 53.10 | 48.65 | 27.73 | 11.97 | 40.28 | ||||||||||||
1974 | 5.32 | a | 10.39 | 21.52 | 39.75 | 47.79 | 59.15 | 67.75 | a | 60.87 | 49.83 | 44.38 | a | 29.62 | 20.28 | a | 38.05 | |||||||||
1975 | 8.91 | b | 13.37 | a | 17.69 | 33.33 | a | 55.32 | 59.93 | a | 68.86 | i | 62.91 | d | 51.88 | 47.02 | 30.13 | 11.21 | 35.61 | a | ||||||
1976 | 4.76 | 20.78 | 22.42 | 44.18 | 51.63 | 64.42 | 65.65 | 65.31 | 55.52 | 36.69 | 20.95 | 2.97 | 37.94 | |||||||||||||
1977 | -2.66 | 15.30 | 32.07 | a | 45.65 | 60.90 | 61.10 | a | 67.16 | 58.55 | 53.80 | 44.13 | a | 27.30 | 10.63 | 39.49 | ||||||||||
1978 | 2.66 | 6.64 | 23.44 | 39.05 | 55.76 | 61.31 | a | 64.94 | 64.32 | 58.08 | 45.05 | 25.67 | a | 6.92 | a | 37.82 | ||||||||||
1979 | -1.28 | d | 4.17 | a | 25.54 | g | 35.46 | f | 48.80 | d | 57.89 | g | 66.40 | a | 60.58 | e | 56.48 | 41.30 | d | 27.62 | r | ----- | z | 39.49 | e | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.86 | m | 52.55 | 37.93 | a | 28.48 | 8.85 | 31.96 | h | |||
1981 | 8.98 | 15.32 | 28.84 | 39.83 | a | 50.74 | 59.68 | 63.65 | h | 63.98 | 52.20 | 40.40 | 34.09 | a | 12.69 | 36.98 | a | |||||||||
1982 | -7.36 | b | 9.14 | 21.27 | 35.33 | 55.44 | n | 54.80 | b | 64.85 | a | 60.57 | a | 54.26 | a | 44.76 | 23.64 | b | 17.93 | a | 34.47 | a | ||||
1983 | 10.87 | a | 20.42 | b | 27.29 | 36.12 | d | 48.83 | p | 59.84 | a | 69.00 | b | 67.78 | a | 55.94 | c | 42.10 | b | 28.68 | -1.79 | b | 37.84 | a | ||
1984 | 6.29 | e | 22.26 | 24.24 | n | 41.84 | b | 48.98 | h | 61.96 | e | 64.16 | c | 66.79 | b | 50.60 | a | 46.50 | b | 28.12 | b | 12.52 | b | 40.10 | b | |
1985 | 6.75 | e | 10.59 | a | 29.57 | a | 42.15 | 53.93 | p | 55.23 | 62.97 | b | 59.37 | a | 52.74 | a | 42.12 | a | 17.91 | a | 1.10 | 34.59 | a | |||
1986 | 10.81 | b | 10.67 | a | 28.44 | 43.82 | 54.43 | i | 60.48 | 65.90 | f | 58.37 | h | 52.31 | a | 42.92 | 22.35 | 16.60 | a | 32.04 | c | |||||
1987 | 11.95 | 23.65 | a | 30.90 | a | 45.28 | a | 55.47 | n | 63.08 | 67.48 | 61.50 | b | 56.43 | 37.88 | a | 31.22 | a | 20.06 | 40.86 | a | |||||
1988 | 3.13 | a | 3.16 | a | 22.73 | 39.02 | 59.52 | k | 64.46 | b | 68.45 | 65.21 | 54.37 | 37.62 | a | 28.18 | 11.00 | 36.12 | a | |||||||
1989 | 11.90 | 1.25 | d | 17.80 | a | 36.85 | 52.53 | a | 59.55 | 67.93 | a | 65.97 | o | 55.47 | 44.47 | 22.08 | 2.47 | 33.85 | a | |||||||
1990 | 16.58 | 13.63 | a | 26.92 | f | 40.15 | 49.38 | r | 61.77 | 64.28 | a | 64.72 | a | 55.77 | 40.97 | 30.58 | 10.17 | a | 39.86 | b | ||||||
1991 | 4.00 | a | 17.95 | 26.52 | 43.58 | 54.64 | q | 63.25 | 64.26 | 66.23 | 53.10 | 38.73 | 20.38 | 13.69 | 37.43 | a | ||||||||||
1992 | 13.56 | 20.36 | 27.60 | g | 36.87 | 53.30 | f | 57.32 | 59.13 | 59.77 | 54.98 | e | 40.71 | 26.15 | 13.92 | a | 38.28 | b | ||||||||
1993 | 9.16 | c | 12.29 | 25.90 | 37.41 | a | 48.50 | t | 57.85 | 63.83 | a | 64.48 | 49.26 | a | 39.44 | 22.93 | 14.05 | 36.06 | a | |||||||
1994 | -6.11 | c | 6.18 | 28.90 | 39.81 | d | 58.48 | k | 62.63 | 64.00 | a | 61.38 | f | 59.83 | j | 46.90 | f | 31.03 | 19.00 | b | 30.68 | d | ||||
1995 | 11.27 | a | 9.88 | 27.97 | 34.07 | a | 51.32 | t | 66.25 | 65.11 | 67.17 | b | 51.98 | b | 40.25 | e | 17.72 | 8.26 | 36.36 | a | ||||||
1996 | -5.57 | a | 7.80 | a | 15.52 | 33.40 | 47.18 | c | 61.72 | 62.25 | a | 64.61 | 55.97 | 42.02 | a | 20.02 | 9.69 | 34.55 | ||||||||
1997 | 5.13 | a | 11.71 | 23.15 | d | 36.97 | 45.92 | a | 63.32 | 64.72 | a | 60.37 | 56.14 | b | 43.02 | 23.55 | b | 21.95 | b | 38.00 | ||||||
1998 | 14.75 | a | 28.52 | a | 26.57 | b | 42.67 | c | 57.02 | 58.89 | b | 64.74 | 65.78 | b | 57.92 | 45.48 | ----- | z | 16.32 | 43.51 | a | |||||
1999 | 5.37 | a | 19.98 | a | 27.16 | 42.48 | a | 54.56 | 60.50 | a | 65.48 | a | 61.18 | a | 53.36 | e | 38.19 | r | 34.00 | i | 17.74 | 40.78 | b | |||
2000 | 6.18 | a | 16.70 | b | 32.03 | a | 37.52 | 52.83 | a | 55.74 | a | 64.10 | 63.08 | a | 51.37 | 44.47 | b | 28.29 | b | 0.82 | c | 37.76 | ||||
2001 | 12.58 | a | 2.67 | a | 19.62 | b | 39.77 | b | 52.37 | 61.89 | b | 64.44 | 67.32 | q | 53.35 | f | 42.06 | g | 38.00 | e | 20.34 | f | 36.42 | d | ||
2002 | 13.98 | b | 17.85 | d | 16.38 | c | 37.72 | a | 44.25 | c | 63.14 | a | 67.63 | d | 63.09 | i | 57.67 | c | 32.13 | e | 23.73 | ----- | z | 37.45 | b | |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.12 | 15.53 | a | 16.32 | j | |
2015 | 5.88 | a | -5.61 | 24.52 | 38.65 | 49.48 | h | 58.98 | c | 64.82 | i | 62.21 | e | 60.06 | c | 44.15 | e | 32.69 | i | 22.50 | a | 34.59 | c | |||
2016 | 6.02 | e | 11.20 | b | 28.62 | b | 39.85 | g | 53.02 | g | 60.09 | c | 64.44 | f | 63.67 | h | 56.95 | h | 44.38 | j | 37.94 | e | 8.78 | f | 28.78 | g |
2017 | 5.60 | g | 16.97 | i | 22.32 | k | 39.18 | s | 48.61 | c | 60.53 | k | 62.12 | o | 59.20 | i | 59.63 | o | 44.00 | l | 20.83 | l | 7.08 | g | 48.61 | k |
2018 | 0.27 | g | -2.93 | m | 21.41 | h | 27.13 | c | 55.53 | o | 60.40 | o | 66.03 | o | 62.97 | l | 57.71 | m | 36.76 | h | 17.45 | h | 16.07 | h | 27.13 | k |
2019 | -4.42 | f | -3.29 | i | 22.05 | k | 35.84 | h | 45.06 | g | 58.35 | m | 66.53 | l | 60.65 | e | 57.47 | l | 41.43 | d | 20.75 | d | 12.00 | h | 40.94 | i |
2020 | 8.40 | e | 6.21 | j | 24.20 | f | 33.95 | a | 50.89 | d | 62.35 | d | 67.67 | g | 64.34 | f | 49.17 | i | 36.60 | j | 31.39 | b | 14.00 | c | 33.50 | f |
2021 | 10.02 | e | -0.72 | a | 31.83 | g | 36.82 | e | 49.48 | i | 65.02 | i | 65.65 | d | 70.98 | g | 56.55 | i | 53.94 | m | 27.24 | c | 15.02 | d | 25.67 | f |
2022 | -2.95 | a | -3.43 | e | 24.12 | k | 31.06 | f | 51.89 | d | 58.91 | g | 64.74 | f | 63.67 | b | 57.40 | j | 42.55 | i | 26.84 | h | 10.32 | c | 23.90 | g |
2023 | 13.86 | f | 8.47 | j | 19.13 | e | 32.95 | k | 53.52 | g | 61.37 | k | 62.10 | g | 62.45 | u | 62.83 | l | 44.32 | l | 27.55 | j | 29.14 | f | 19.13 | k |
2024 | 12.37 | d | 23.34 | g | 25.94 | e | 40.07 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.16 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.80 | 10.82 | 24.16 | 38.45 | 50.98 | 60.27 | 65.10 | 62.71 | 53.79 | 42.34 | 26.45 | 12.13 | 37.54 | |||||||||||||
S.D. | 6.16 | 7.67 | 5.36 | 3.83 | 4.18 | 2.99 | 2.19 | 2.69 | 2.60 | 3.46 | 4.93 | 5.89 | 1.75 | |||||||||||||
SKEW | -0.41 | 0.07 | -0.21 | -0.32 | 0.20 | -0.69 | -0.43 | 0.15 | 0.04 | -0.64 | 0.21 | -0.38 | -0.22 | |||||||||||||
MAX | 16.58 | 28.52 | 34.76 | 45.65 | 60.90 | 66.25 | 69.00 | 67.78 | 60.06 | 48.65 | 38.00 | 22.50 | 40.28 | |||||||||||||
MIN | -7.36 | -5.61 | 12.60 | 27.13 | 42.38 | 51.71 | 59.13 | 58.55 | 47.32 | 32.13 | 17.12 | -1.79 | 34.55 | |||||||||||||
YRS | 42 | 40 | 36 | 39 | 26 | 38 | 34 | 35 | 40 | 37 | 40 | 41 | 10 |