YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1984 | ----- | z | ----- | z | ----- | z | ----- | z | 55.50 | a | 65.38 | e | 70.95 | c | 73.33 | a | 54.68 | b | 48.06 | d | 28.42 | 9.20 | a | 50.69 | d | |
1985 | 7.63 | h | 9.52 | 33.88 | e | 46.93 | a | 61.31 | 60.28 | c | 69.38 | b | 64.64 | b | 54.04 | b | 43.94 | 15.41 | b | 1.48 | e | 41.89 | a | |||
1986 | 11.91 | d | 9.80 | 29.69 | d | 42.55 | b | 57.39 | c | 66.72 | e | 70.66 | b | 64.16 | c | 56.10 | a | 44.81 | b | 21.29 | d | 20.70 | c | 41.31 | ||
1987 | 19.48 | b | 27.02 | b | 30.03 | 49.77 | b | 60.50 | a | 68.84 | b | 73.14 | c | 66.57 | a | ----- | z | 41.26 | d | 34.34 | a | 20.95 | 44.72 | a | ||
1988 | 1.37 | h | 8.07 | f | 30.35 | g | 44.25 | b | 63.44 | d | 74.30 | b | 75.26 | b | 70.78 | a | 58.60 | a | 42.65 | a | 28.74 | c | 17.65 | d | 52.85 | c |
1989 | 9.73 | a | 1.79 | 18.80 | a | 42.83 | 58.14 | b | 63.83 | a | 75.16 | 70.23 | 57.85 | 46.50 | 23.67 | a | 4.32 | c | 39.40 | |||||||
1990 | 22.37 | a | 15.71 | 31.27 | 42.55 | a | 54.18 | 65.59 | b | 69.50 | 69.66 | 62.25 | 44.45 | 31.08 | 11.66 | b | 43.36 | |||||||||
1991 | 5.57 | b | 21.19 | a | 29.73 | 46.55 | 59.55 | 68.74 | a | 69.13 | 72.03 | 58.60 | a | 42.94 | 21.34 | a | 17.83 | b | 42.77 | |||||||
1992 | 15.39 | c | 21.65 | c | 32.67 | b | 39.90 | 57.17 | e | 62.02 | a | 63.29 | c | 64.33 | a | 55.66 | b | 45.52 | a | 26.20 | 10.36 | b | 41.18 | |||
1993 | 4.00 | b | 9.12 | c | 23.84 | 42.52 | a | 55.17 | a | 60.35 | d | 64.64 | c | 68.11 | 53.35 | 42.68 | 25.07 | 13.98 | a | 38.57 | ||||||
1994 | -5.30 | c | 1.48 | c | 28.56 | 43.10 | 58.54 | c | 66.52 | a | 66.95 | a | 65.89 | 60.95 | a | 48.81 | b | 32.59 | b | 18.75 | a | 40.57 | ||||
1995 | 9.72 | a | 13.40 | b | 27.57 | a | 38.18 | 53.36 | b | 70.62 | b | 68.12 | b | 70.29 | c | 56.62 | e | 44.55 | a | 22.28 | e | 10.57 | d | 40.44 | ||
1996 | -0.27 | c | 15.25 | e | 20.04 | h | 37.47 | a | 51.81 | b | 67.00 | f | 68.10 | b | 68.58 | e | 59.17 | 45.11 | c | 17.69 | c | 5.10 | f | 40.32 | c | |
1997 | -0.47 | b | 11.95 | f | 20.66 | b | 37.79 | a | 51.87 | 68.30 | 69.02 | b | 67.16 | 61.77 | 47.40 | f | 23.72 | a | 22.93 | b | 42.28 | b | ||||
1998 | 9.48 | g | 25.70 | a | 27.24 | d | 46.06 | f | 61.09 | c | 62.83 | a | 71.35 | 71.00 | b | 62.33 | c | 46.12 | g | 30.14 | e | 19.04 | c | 47.86 | c | |
1999 | 5.28 | b | 22.67 | e | 29.70 | c | 44.73 | d | 56.91 | d | 66.02 | a | 71.73 | c | 67.75 | c | 62.75 | 44.41 | d | 36.48 | a | 23.12 | b | 44.30 | ||
2000 | 9.48 | a | 18.90 | c | 35.85 | 41.60 | a | 58.21 | b | 63.12 | a | 70.50 | a | 69.75 | c | 56.83 | g | 47.76 | b | 25.93 | a | 2.28 | a | 40.31 | a | |
2001 | 14.58 | 4.48 | 23.67 | b | 43.33 | 58.42 | 66.02 | a | 71.45 | a | 71.02 | c | 58.75 | b | 43.37 | 39.41 | b | 19.40 | 42.83 | |||||||
2002 | 16.72 | a | 23.93 | 19.45 | 39.68 | b | 50.05 | c | 67.79 | b | 72.77 | a | 67.37 | 61.83 | 37.90 | a | 28.63 | 19.74 | 42.16 | |||||||
2003 | 10.20 | a | 8.19 | a | 24.19 | 45.48 | b | 54.88 | b | 65.39 | c | 70.16 | b | 72.08 | 57.38 | a | 48.71 | 24.07 | 19.34 | c | 41.67 | |||||
2004 | 2.66 | c | 12.09 | a | 30.38 | a | 44.08 | 52.68 | 62.21 | b | 67.43 | a | 62.15 | 61.38 | a | 45.94 | 34.62 | a | 18.89 | 41.21 | ||||||
2005 | 4.65 | a | 17.06 | a | 27.85 | 48.83 | 53.88 | a | 67.89 | c | 71.53 | a | 67.39 | i | 60.38 | m | 48.34 | 32.40 | a | 17.74 | b | 39.02 | b | |||
2006 | 22.27 | 9.86 | 25.24 | 49.70 | 57.44 | 67.58 | 73.75 | a | 69.11 | 57.84 | a | 42.23 | c | 31.02 | a | 23.65 | 44.14 | |||||||||
2007 | 10.79 | ----- | z | 29.97 | 40.88 | 59.02 | 68.61 | c | 72.92 | 66.23 | 59.82 | 49.44 | 30.93 | b | ----- | z | 48.86 | b | ||||||||
2008 | 5.10 | a | 4.42 | d | 22.87 | a | 40.22 | 52.95 | 63.28 | 69.69 | 68.61 | ----- | z | 46.21 | 31.69 | c | 4.58 | 37.24 | a | |||||||
2009 | 0.71 | b | 10.66 | 19.42 | a | 40.23 | 52.94 | 63.48 | 67.18 | a | 65.68 | 63.23 | b | 40.47 | 37.35 | 9.43 | a | 39.23 | ||||||||
2010 | 7.22 | a | 8.15 | a | 32.97 | 49.66 | b | 56.17 | b | 66.17 | 71.08 | a | 71.05 | 55.80 | b | 49.74 | 29.78 | c | 8.44 | 42.19 | ||||||
2011 | 2.17 | b | 9.45 | 17.03 | 41.97 | 53.35 | 64.59 | c | 69.82 | a | ----- | z | 60.45 | b | 50.63 | 32.84 | a | 23.34 | 38.69 | a | ||||||
2012 | 18.10 | 20.19 | ----- | z | 47.26 | a | 59.12 | b | 68.68 | 76.19 | 68.21 | 57.98 | a | 43.23 | 29.00 | 13.92 | 45.63 | a | ||||||||
2013 | 11.44 | 9.68 | 15.66 | 32.13 | 55.89 | ----- | z | 70.95 | 69.60 | 62.77 | 44.16 | 27.92 | 3.95 | 36.74 | a | |||||||||||
2014 | 3.60 | 3.54 | 21.89 | 38.83 | 55.63 | 66.68 | 68.05 | 68.87 | 59.10 | 47.44 | 21.77 | 18.81 | 39.52 | |||||||||||||
2015 | 14.40 | b | 4.25 | 31.18 | 45.28 | 54.10 | 65.48 | f | 70.74 | 66.97 | k | 63.65 | 48.17 | a | 34.38 | 20.81 | 38.70 | b | ||||||||
2016 | 11.42 | 21.36 | 35.37 | 41.17 | 59.52 | 67.60 | 70.06 | 68.81 | 60.25 | 46.37 | 40.15 | 13.68 | 44.65 | |||||||||||||
2017 | 11.32 | 21.61 | 26.48 | 43.62 | 56.11 | 66.72 | 70.32 | 65.50 | 59.67 | 46.00 | 26.20 | e | 13.94 | 42.29 | ||||||||||||
2018 | 8.81 | 4.41 | 24.31 | 31.58 | 61.82 | 69.95 | 69.63 | 66.52 | 57.93 | 38.44 | 21.58 | 19.23 | 39.52 | |||||||||||||
2019 | 4.76 | -2.50 | 17.02 | 41.03 | 50.13 | 66.65 | 71.08 | 65.53 | 59.93 | 40.21 | 25.63 | 12.24 | 37.64 | |||||||||||||
2020 | 9.87 | 11.36 | 26.05 | 37.78 | 53.00 | 70.17 | 72.87 | 69.52 | 57.35 | 38.32 | 32.10 | 21.48 | 41.66 | |||||||||||||
2021 | 17.90 | 4.89 | 34.45 | 40.48 | 54.85 | 71.27 | 73.34 | 69.94 | 62.43 | 50.32 | 32.27 | 13.50 | a | 43.80 | ||||||||||||
2022 | 1.68 | 4.73 | 24.81 | 35.08 | 54.65 | 68.98 | 71.23 | 68.26 | 60.67 | 46.19 | 25.62 | a | 8.19 | 39.17 | ||||||||||||
2023 | 9.57 | d | 8.07 | 11.58 | a | 32.42 | 61.03 | 72.12 | 68.02 | 68.97 | 63.25 | 46.69 | 31.17 | 27.00 | 41.66 | |||||||||||
2024 | 12.68 | 27.76 | 29.82 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.22 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 9.18 | 12.46 | 26.15 | 41.88 | 56.29 | 66.63 | 70.43 | 68.30 | 59.34 | 45.05 | 28.62 | 15.16 | 41.41 | |||||||||||||
S.D. | 6.58 | 8.08 | 6.00 | 4.63 | 3.33 | 3.19 | 2.66 | 2.51 | 2.78 | 3.34 | 5.68 | 6.64 | 1.90 | |||||||||||||
SKEW | 0.10 | 0.29 | -0.42 | -0.33 | 0.13 | 0.03 | -0.25 | -0.31 | -0.32 | -0.40 | -0.13 | -0.44 | -0.09 | |||||||||||||
MAX | 22.37 | 27.76 | 35.85 | 49.77 | 63.44 | 74.30 | 76.19 | 73.33 | 63.65 | 50.63 | 40.15 | 27.00 | 44.65 | |||||||||||||
MIN | -5.30 | -2.50 | 11.58 | 31.58 | 50.05 | 60.28 | 63.29 | 62.15 | 53.35 | 37.90 | 15.41 | 1.48 | 37.64 | |||||||||||||
YRS | 37 | 37 | 36 | 38 | 40 | 37 | 40 | 37 | 36 | 38 | 40 | 38 | 25 |