YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.10 | a | 34.23 | 23.23 | 4.12 | e | 25.42 | h | ||
1963 | -14.84 | f | -8.22 | a | 13.84 | 26.77 | 36.40 | a | 47.79 | b | 52.15 | d | 45.27 | p | 43.03 | ----- | z | ----- | z | ----- | z | 30.25 | e | |||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.83 | a | 45.74 | 38.93 | 30.39 | 18.35 | d | -7.68 | 29.26 | f | ||||
1965 | -13.48 | -11.46 | -3.06 | 24.00 | 38.16 | 41.83 | 50.00 | l | 44.71 | 37.20 | 32.87 | 16.43 | 13.29 | 20.04 | a | |||||||||||
1966 | -16.97 | -6.14 | 14.48 | b | 22.80 | 32.74 | 47.17 | 53.23 | 48.03 | a | 37.63 | ----- | z | 13.96 | e | 0.29 | 22.47 | a | ||||||||
1967 | -5.03 | -14.44 | c | 10.19 | 22.55 | a | 27.00 | 42.17 | 46.61 | 45.07 | d | 33.83 | ----- | z | 15.79 | a | ----- | z | 22.38 | b | ||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.74 | 42.43 | 35.68 | 18.79 | a | 0.39 | 29.01 | g | ||||
1969 | -5.45 | -2.23 | b | 3.00 | b | 27.57 | b | 36.58 | 39.46 | b | 47.97 | a | 48.28 | b | 41.54 | b | 29.74 | 19.83 | g | 6.50 | a | 24.81 | a | |||
1970 | -12.37 | a | -7.63 | a | -0.10 | 25.83 | 36.00 | c | 46.03 | a | 50.60 | a | 45.90 | 42.03 | 35.17 | a | 15.67 | -1.13 | 23.00 | |||||||
1971 | -14.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.96 | c | 36.79 | b | 19.07 | 2.77 | 17.17 | g | |||
1972 | -15.13 | -7.97 | 4.90 | 24.23 | 41.90 | 45.20 | 50.00 | a | 50.47 | a | 38.41 | a | 31.32 | 20.41 | a | -2.80 | a | 23.41 | ||||||||
1973 | -0.45 | 1.59 | a | 24.65 | 26.70 | 37.19 | 48.10 | 51.61 | 54.87 | 40.93 | 38.42 | 20.30 | 2.58 | 28.87 | ||||||||||||
1974 | -6.30 | a | -5.04 | 10.48 | 26.77 | 36.03 | 44.60 | 53.61 | 48.94 | 37.20 | 32.53 | a | 21.30 | 11.32 | 25.95 | |||||||||||
1975 | -3.10 | b | 1.89 | a | 4.23 | 21.76 | a | 40.77 | 48.48 | a | 55.77 | i | 49.62 | b | 39.53 | 35.13 | 18.47 | 0.68 | 23.40 | a | ||||||
1976 | -7.90 | 8.10 | 10.10 | 28.83 | 33.90 | 50.03 | 50.03 | 49.55 | 38.53 | 23.52 | 10.33 | -9.58 | 23.79 | |||||||||||||
1977 | -14.97 | 2.54 | 20.42 | 31.33 | 45.19 | 46.70 | 53.32 | 45.74 | 43.07 | 32.27 | a | 17.90 | 2.19 | 27.14 | ||||||||||||
1978 | -9.61 | -8.36 | 9.03 | 26.27 | 40.35 | 47.00 | 53.35 | 52.55 | 47.13 | 33.65 | 14.86 | a | -6.71 | 24.96 | ||||||||||||
1979 | -16.10 | a | -8.78 | a | 13.96 | d | 23.96 | f | 35.18 | c | 43.08 | e | 53.17 | a | 48.00 | e | 44.67 | 31.82 | c | 17.83 | r | ----- | z | 27.22 | c | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.67 | m | 41.43 | 27.50 | a | 18.83 | -2.48 | 21.32 | h | |||
1981 | -5.90 | 3.25 | 15.58 | 27.63 | 35.19 | 47.63 | 50.87 | h | 51.52 | 39.23 | 30.58 | 24.37 | 2.68 | 24.71 | a | |||||||||||
1982 | -21.68 | -4.57 | 8.58 | 21.30 | 40.50 | m | 40.67 | 53.10 | 48.00 | 43.07 | 35.03 | 13.55 | a | 10.00 | 22.46 | a | ||||||||||
1983 | 0.48 | 10.82 | 18.26 | 23.93 | 35.41 | n | 46.93 | a | 56.52 | 54.29 | 44.83 | 32.74 | 22.13 | -14.20 | a | 26.98 | a | |||||||||
1984 | -6.16 | 10.86 | 10.39 | m | 26.72 | a | 34.92 | g | 50.37 | 50.17 | a | 53.60 | a | 38.87 | 36.93 | a | 18.34 | a | 1.94 | 28.16 | b | |||||
1985 | -6.61 | -3.26 | a | 18.10 | 28.87 | 40.40 | p | 40.87 | 48.23 | a | 47.33 | a | 42.00 | 30.06 | 8.80 | -10.32 | 22.19 | a | ||||||||
1986 | -1.68 | -2.07 | 15.10 | 32.20 | 38.17 | g | 46.53 | 54.12 | e | 45.57 | h | 42.20 | 32.06 | 12.20 | 4.77 | a | 23.54 | b | ||||||||
1987 | -0.61 | 12.11 | a | 19.57 | a | 25.79 | a | 44.78 | m | 46.80 | 55.10 | 48.21 | b | 44.13 | 27.48 | 21.21 | a | 12.32 | 28.37 | a | ||||||
1988 | -10.27 | a | -13.72 | 9.74 | 22.20 | 43.95 | k | 46.23 | 51.45 | 53.10 | 42.57 | 25.37 | a | 20.97 | -1.68 | 22.36 | a | |||||||||
1989 | -2.19 | -13.92 | d | 5.39 | 23.90 | 35.97 | 45.97 | 52.71 | 52.00 | o | 42.27 | 30.68 | 13.27 | -9.06 | 20.45 | a | ||||||||||
1990 | 3.65 | -2.81 | a | 13.84 | f | 27.00 | 32.00 | r | 48.23 | 50.50 | a | 49.80 | a | 42.80 | 28.74 | 19.90 | -2.03 | a | 26.58 | b | ||||||
1991 | -9.00 | a | 3.50 | 14.32 | 30.07 | 45.14 | q | 50.37 | 51.84 | 51.42 | 42.47 | 28.16 | 10.73 | 2.03 | 25.08 | a | ||||||||||
1992 | 1.84 | 10.93 | 16.88 | g | 26.67 | 38.12 | f | 43.10 | 46.52 | 47.48 | 43.36 | e | 28.65 | 19.87 | 4.17 | a | 27.26 | b | ||||||||
1993 | -3.86 | c | -1.29 | 12.10 | 24.37 | 36.09 | t | 45.80 | 52.90 | a | 52.26 | 37.97 | a | 27.48 | 12.87 | 4.35 | 24.09 | a | ||||||||
1994 | -19.14 | b | -7.61 | 17.39 | 25.58 | d | 43.43 | j | 49.40 | 51.17 | a | 48.58 | e | 47.10 | i | 37.88 | f | 20.60 | 7.79 | b | 21.53 | c | ||||
1995 | 0.90 | a | -4.00 | 16.35 | 22.72 | a | 34.91 | t | 51.73 | 51.87 | 54.97 | b | 38.04 | b | 30.90 | b | 7.67 | -3.39 | 24.34 | a | ||||||
1996 | -23.30 | a | -6.82 | a | 1.71 | 21.87 | 33.07 | b | 48.60 | 50.57 | a | 50.71 | 44.73 | 30.03 | a | 11.37 | 1.13 | 21.97 | ||||||||
1997 | -7.13 | -3.50 | 9.38 | b | 24.23 | 33.23 | 49.40 | 52.97 | a | 48.19 | 41.96 | b | 31.84 | 13.10 | a | 13.17 | b | 25.57 | ||||||||
1998 | 5.97 | a | 18.52 | a | 16.14 | b | 28.07 | c | 41.94 | 49.00 | b | 52.45 | 54.10 | b | 44.00 | 36.06 | ----- | z | 6.52 | 32.07 | a | |||||
1999 | -5.27 | a | 8.14 | 16.06 | 30.72 | a | 42.87 | 49.07 | a | 52.23 | a | 49.03 | a | 41.60 | e | 26.31 | r | 23.91 | h | 8.23 | 29.27 | b | ||||
2000 | -6.87 | 4.59 | b | 20.57 | a | 25.97 | 40.47 | a | 44.38 | a | 53.13 | 51.63 | a | 38.97 | 33.69 | b | 22.62 | a | -8.63 | a | 26.71 | |||||
2001 | 2.47 | a | -11.11 | 6.55 | b | 30.07 | b | 40.48 | 50.50 | b | 52.97 | 54.79 | q | 41.96 | f | 30.00 | g | 28.22 | c | 10.52 | f | 25.02 | d | |||
2002 | 1.83 | b | 4.60 | c | 4.11 | c | 27.21 | a | 31.54 | c | 51.00 | a | 54.70 | d | 52.70 | h | 45.81 | c | 25.11 | c | 14.00 | ----- | z | 25.99 | 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 | 7.83 | 8.20 | a | 8.02 | j | |
2015 | -5.03 | a | -19.71 | 10.39 | 24.60 | 37.26 | h | 45.78 | c | 51.68 | i | 49.96 | e | 48.81 | c | 32.04 | e | 23.81 | i | 15.67 | a | 22.50 | c | |||
2016 | -5.08 | e | -1.67 | b | 16.97 | b | 28.91 | g | 38.17 | g | 49.19 | c | 52.04 | f | 51.39 | h | 46.18 | h | 33.90 | j | 26.64 | e | -0.24 | f | 17.21 | g |
2017 | -7.79 | g | 4.00 | i | 9.15 | k | 25.08 | r | 36.68 | c | 45.68 | k | 48.00 | o | 44.77 | i | 45.87 | o | 31.68 | l | 10.11 | l | -3.54 | g | 36.68 | k |
2018 | -14.88 | g | -22.27 | m | 6.74 | h | 13.11 | c | 38.71 | n | 46.47 | o | 52.12 | o | 49.53 | l | 46.76 | m | 27.83 | h | 8.59 | h | 5.13 | h | 13.11 | k |
2019 | -18.48 | f | -20.26 | i | 6.85 | k | 22.64 | h | 31.54 | g | 43.76 | m | 52.21 | l | 47.62 | e | 47.16 | k | 33.56 | d | 12.46 | d | -0.43 | h | 31.21 | i |
2020 | -2.62 | e | -12.63 | j | 10.16 | f | 20.79 | a | 38.30 | d | 48.81 | d | 53.75 | g | 52.08 | f | 36.45 | h | 25.95 | j | 21.18 | b | 3.14 | c | 21.60 | f |
2021 | -2.62 | e | -13.89 | a | 18.54 | g | 24.40 | e | 34.95 | i | 50.19 | i | 50.70 | d | 58.33 | g | 41.95 | i | 43.89 | m | 17.19 | c | 4.56 | d | 13.39 | f |
2022 | -17.27 | a | -21.04 | e | 12.75 | k | 21.88 | f | 40.59 | d | 45.22 | g | 52.36 | f | 53.59 | b | 44.70 | j | 32.41 | i | 18.91 | h | 2.21 | c | 11.62 | g |
2023 | 5.04 | f | -6.11 | j | 4.27 | e | 22.20 | j | 39.08 | g | 47.16 | k | 48.75 | g | 46.70 | u | 51.00 | l | 33.42 | l | 16.15 | j | 21.35 | e | 12.81 | j |
2024 | 5.04 | d | 13.18 | g | 12.81 | e | 27.47 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.92 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -6.71 | -2.75 | 11.50 | 25.52 | 37.22 | 46.77 | 51.75 | 49.74 | 41.48 | 31.57 | 17.19 | 2.35 | 25.14 | |||||||||||||
S.D. | 7.33 | 9.07 | 6.43 | 3.51 | 4.06 | 3.05 | 2.23 | 2.88 | 3.00 | 3.49 | 4.97 | 7.53 | 2.13 | |||||||||||||
SKEW | -0.42 | 0.19 | -0.25 | -0.85 | -0.28 | -0.65 | -0.51 | 0.22 | -0.05 | -0.25 | -0.03 | 0.07 | 0.19 | |||||||||||||
MAX | 5.97 | 18.52 | 24.65 | 32.20 | 45.19 | 51.73 | 56.52 | 54.97 | 48.81 | 38.42 | 28.22 | 21.35 | 28.87 | |||||||||||||
MIN | -23.30 | -21.04 | -3.06 | 13.11 | 27.00 | 39.46 | 46.52 | 44.71 | 33.83 | 23.52 | 7.67 | -14.20 | 21.97 | |||||||||||||
YRS | 42 | 40 | 37 | 39 | 26 | 39 | 35 | 36 | 40 | 37 | 41 | 42 | 10 |