YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.83 | 20.61 | 10.00 | 3.71 | 16.04 | h | ||||
1978 | -3.10 | -6.39 | 6.06 | 17.23 | 20.65 | 28.43 | 32.65 | 29.26 | 30.30 | 22.77 | 5.70 | -14.32 | 14.10 | |||||||||||||
1979 | -14.42 | -13.57 | -5.42 | 4.33 | 18.16 | 25.73 | 39.97 | 38.35 | 32.50 | 25.52 | 3.90 | -0.52 | 12.88 | |||||||||||||
1980 | -3.42 | -9.64 | d | -4.90 | 2.97 | 18.81 | 25.90 | 31.39 | 29.06 | 32.37 | 20.26 | 11.53 | 7.10 | 13.45 | ||||||||||||
1981 | -2.45 | 0.43 | 3.32 | 19.00 | 26.16 | 33.73 | 39.58 | 36.94 | 31.60 | 22.71 | 13.83 | -1.13 | 18.64 | |||||||||||||
1982 | -5.00 | -5.11 | 6.00 | 18.13 | 27.00 | 31.20 | 37.68 | 40.13 | 32.70 | 19.03 | 6.24 | a | -11.06 | 16.41 | ||||||||||||
1983 | -7.68 | -6.54 | 2.55 | 4.93 | 18.06 | 30.20 | 38.32 | 40.19 | 34.20 | 25.87 | 12.34 | a | 3.39 | 16.32 | ||||||||||||
1984 | -13.61 | -8.21 | -0.90 | 7.13 | 22.13 | 27.07 | 34.81 | 33.93 | a | 26.20 | 14.13 | a | 8.57 | 1.81 | 12.75 | |||||||||||
1985 | -7.00 | -7.86 | 4.68 | 12.73 | 21.90 | 27.00 | 39.52 | 37.39 | 29.30 | 22.39 | 11.63 | -5.52 | 15.51 | |||||||||||||
1986 | -5.19 | -1.26 | a | 4.39 | 11.13 | 26.68 | 35.93 | 39.32 | 40.10 | 31.00 | 20.26 | 11.33 | i | -5.97 | 17.85 | a | ||||||||||
1987 | -8.84 | -2.96 | -6.58 | 8.57 | 20.77 | 30.10 | 37.10 | 37.52 | 26.63 | 22.71 | 8.89 | c | 0.32 | 14.52 | ||||||||||||
1988 | -3.19 | -0.89 | a | 6.06 | 19.93 | 28.42 | 37.07 | 39.71 | 41.29 | 31.40 | 26.45 | 12.67 | -1.94 | 19.75 | ||||||||||||
1989 | -8.06 | 2.61 | 14.26 | 23.37 | 30.42 | 33.43 | 41.03 | 36.29 | 30.30 | 22.94 | 12.67 | 2.50 | a | 20.15 | ||||||||||||
1990 | -3.84 | 2.11 | 11.19 | 23.77 | 26.35 | 36.37 | 39.19 | 35.00 | 32.27 | 22.23 | 7.72 | a | -7.77 | 18.72 | ||||||||||||
1991 | -12.04 | c | -2.59 | a | 4.37 | a | 13.59 | h | 26.64 | f | 33.30 | 38.40 | f | 38.17 | a | 31.33 | 24.24 | b | 4.65 | j | -8.54 | c | 13.53 | d | ||
1992 | -11.17 | a | -3.81 | b | 7.61 | 22.37 | 30.48 | 33.08 | e | 36.44 | d | 35.47 | a | 28.93 | a | 24.29 | -0.17 | a | -8.76 | b | 16.23 | |||||
1993 | -5.06 | -1.61 | 5.00 | a | 14.43 | 27.26 | 33.50 | 38.35 | ----- | z | ----- | z | 22.38 | e | 8.10 | a | -4.92 | f | 15.82 | c | ||||||
1994 | -6.52 | d | -7.32 | f | 10.29 | c | 19.00 | a | 30.50 | e | 38.07 | b | 39.52 | b | 41.31 | e | 33.27 | 23.27 | a | 2.39 | g | -3.86 | b | 22.48 | b | |
1995 | -10.53 | p | 2.85 | b | 8.39 | c | 14.07 | c | 25.94 | 32.43 | 38.45 | 42.30 | a | 33.83 | 23.17 | b | 17.37 | k | 5.09 | h | 24.60 | c | ||||
1996 | -4.88 | e | 4.00 | a | 6.86 | c | 18.96 | b | 31.26 | 36.03 | a | 41.37 | a | 39.90 | a | 31.04 | e | 23.31 | b | 7.83 | g | -4.30 | d | 20.32 | a | |
1997 | -4.00 | g | -4.80 | h | 17.44 | m | 15.41 | c | 29.58 | 35.57 | 40.32 | 40.38 | b | 35.50 | d | 22.41 | b | 8.64 | e | -6.18 | n | 28.48 | d | |||
1998 | -4.32 | c | -4.05 | f | 11.11 | m | 14.54 | b | 28.07 | a | 33.07 | 43.74 | 40.57 | a | 37.23 | d | 24.64 | c | 13.21 | f | -1.20 | k | 27.19 | d | ||
1999 | -1.73 | p | 0.43 | g | 15.55 | b | 15.32 | b | 26.93 | a | 34.33 | 44.16 | 41.90 | 33.27 | 23.59 | b | 13.43 | 0.69 | b | 24.92 | b | |||||
2000 | 1.05 | k | 5.19 | b | 8.11 | c | 21.00 | a | 30.32 | 36.30 | 41.27 | e | 41.97 | 34.17 | 26.14 | c | -0.24 | e | -1.44 | d | 22.07 | a | ||||
2001 | -10.83 | g | -3.52 | e | 6.48 | 20.28 | a | 29.30 | a | 35.03 | 41.61 | 39.55 | b | 32.20 | 25.43 | a | 14.86 | a | -8.00 | d | 21.20 | a | ||||
2002 | -2.77 | e | -0.94 | k | 9.90 | j | 24.80 | 27.93 | c | 36.93 | 41.94 | 37.90 | 33.14 | a | 22.35 | 11.35 | m | -5.61 | h | 27.78 | d | |||||
2003 | -2.22 | m | -2.33 | g | 5.18 | i | 19.39 | g | 29.10 | 33.40 | 38.90 | 38.90 | 29.43 | 25.62 | b | 8.11 | c | -7.20 | p | 29.07 | e | |||||
2004 | -11.65 | n | -7.59 | g | 12.87 | 22.07 | 28.13 | 33.93 | 38.48 | 37.16 | 30.69 | a | 25.37 | a | 11.59 | m | -0.60 | p | 28.59 | d | ||||||
2005 | -2.63 | a | 0.47 | m | 5.06 | 16.33 | 28.48 | 34.53 | 40.35 | 39.90 | 35.07 | 27.55 | 16.60 | e | 2.48 | f | 24.13 | b | ||||||||
2006 | -4.41 | n | -3.75 | l | 10.83 | g | 22.10 | a | 29.26 | 35.67 | 43.52 | 41.26 | 29.50 | 24.03 | 17.06 | l | 1.31 | o | 32.19 | e | ||||||
2007 | -6.08 | g | 4.38 | l | 13.48 | 20.07 | 28.45 | 36.26 | c | 42.10 | 43.05 | i | 34.53 | 24.19 | 20.50 | j | -2.00 | j | 28.44 | e | ||||||
2008 | -13.46 | g | -2.92 | q | 11.08 | r | 16.55 | h | 27.26 | 34.03 | 39.74 | 39.94 | 31.93 | 25.23 | 18.08 | r | 5.67 | j | 33.02 | f | ||||||
2009 | -2.82 | i | -1.33 | p | 7.62 | o | 17.17 | a | 31.97 | 34.37 | 40.61 | 36.58 | 33.43 | 20.63 | a | 13.52 | a | -12.35 | 23.99 | c | ||||||
2010 | -7.90 | b | -9.82 | -0.90 | 18.07 | a | 26.45 | 35.23 | 42.65 | 40.32 | 33.93 | 26.80 | a | 6.21 | a | 5.43 | a | 18.04 | ||||||||
2011 | -11.13 | -10.48 | a | 9.86 | b | 19.57 | 25.52 | 34.40 | 42.55 | 40.52 | 34.63 | 23.84 | 9.23 | -9.00 | a | 17.46 | ||||||||||
2012 | -4.43 | a | -7.90 | 7.65 | 22.27 | 29.13 | ----- | z | 42.52 | 40.64 | f | 33.17 | 23.90 | 17.36 | s | -4.26 | 15.78 | c | ||||||||
2013 | -12.35 | -12.21 | 3.77 | 18.93 | 27.97 | a | 35.18 | h | 43.43 | j | 40.90 | 36.60 | 21.68 | 14.40 | -7.32 | 13.24 | b | |||||||||
2014 | -3.35 | 3.68 | 9.13 | 17.97 | 27.16 | 34.37 | 42.58 | 39.48 | 36.23 | 27.68 | 14.21 | a | 1.74 | 20.91 | ||||||||||||
2015 | -0.10 | 6.18 | 11.90 | 21.70 | 28.58 | 38.07 | 41.52 | 40.74 | 36.53 | 29.74 | 15.75 | r | -1.65 | 23.02 | a | |||||||||||
2016 | -8.45 | 2.17 | 12.39 | 18.53 | 28.26 | 38.33 | 41.45 | 39.10 | 34.63 | 27.52 | 15.87 | -0.03 | a | 20.81 | ||||||||||||
2017 | -1.03 | 5.96 | 13.32 | 19.47 | 27.87 | 36.60 | 43.65 | 38.94 | 34.57 | 25.84 | 20.40 | 7.94 | 22.79 | |||||||||||||
2018 | -0.48 | 1.50 | 9.77 | 22.23 | 29.55 | 36.17 | 42.00 | 38.16 | 32.03 | 24.06 | 7.30 | -1.74 | 20.05 | |||||||||||||
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.65 | m | ----- | z | ----- | z |
2022 | -0.29 | -1.32 | 8.94 | 23.00 | 32.57 | h | 39.73 | 45.00 | 44.10 | 38.60 | 25.71 | 10.30 | 3.00 | 21.52 | a | |||||||||||
2023 | -2.65 | -1.64 | 6.42 | 17.24 | a | 30.97 | 34.80 | 43.23 | 44.06 | 36.50 | 27.61 | 15.43 | 1.48 | 21.12 | ||||||||||||
2024 | 2.61 | 3.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.86 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -5.60 | -2.42 | 6.58 | 17.25 | 27.00 | 33.90 | 40.20 | 38.87 | 32.71 | 23.87 | 10.38 | -2.44 | 17.53 | |||||||||||||
S.D. | 4.20 | 5.58 | 5.41 | 5.47 | 3.58 | 3.36 | 2.90 | 3.18 | 2.72 | 2.74 | 4.67 | 5.64 | 3.03 | |||||||||||||
SKEW | -0.41 | -0.27 | -0.71 | -1.12 | -1.21 | -0.93 | -1.03 | -1.33 | -0.19 | -0.83 | -0.37 | -0.20 | -0.09 | |||||||||||||
MAX | 2.61 | 6.18 | 15.55 | 24.80 | 31.97 | 39.73 | 45.00 | 44.10 | 38.60 | 29.74 | 20.40 | 7.94 | 22.79 | |||||||||||||
MIN | -14.42 | -13.57 | -6.58 | 2.97 | 18.06 | 25.73 | 31.39 | 29.06 | 26.20 | 14.13 | -0.24 | -14.32 | 12.75 | |||||||||||||
YRS | 33 | 32 | 36 | 40 | 41 | 41 | 41 | 40 | 43 | 44 | 31 | 33 | 20 |