YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.25 | a | 31.25 | k |
1995 | 27.98 | 31.20 | a | 34.48 | 37.93 | a | 43.82 | 55.66 | a | 63.48 | a | 67.61 | 54.52 | 44.64 | c | 37.17 | a | 30.30 | a | 44.07 | ||||||
1996 | 24.08 | 28.61 | a | 30.95 | a | 42.07 | 50.24 | 60.64 | a | 66.33 | b | 63.73 | 54.11 | c | 45.21 | c | 35.76 | a | 28.23 | a | 44.16 | |||||
1997 | 24.70 | a | 26.54 | a | 36.58 | 34.62 | 50.90 | a | 59.60 | a | 64.92 | a | 62.74 | b | 57.13 | 44.52 | a | 30.55 | 28.58 | a | 43.45 | |||||
1998 | 30.78 | a | 29.79 | 31.42 | 39.21 | a | 51.35 | 53.57 | b | 66.60 | 65.82 | 61.93 | a | 44.60 | b | 37.78 | a | 25.02 | 44.82 | |||||||
1999 | 29.76 | 34.31 | b | 35.95 | 37.02 | 48.72 | b | 58.38 | b | 66.32 | a | 65.02 | 52.42 | 47.95 | 43.30 | 29.72 | a | 45.74 | ||||||||
2000 | 29.16 | 33.67 | 35.48 | 44.46 | b | 54.47 | b | 60.03 | a | 69.58 | 68.52 | 56.09 | b | 45.68 | c | 25.88 | b | 24.60 | 45.63 | |||||||
2001 | 26.95 | a | 25.93 | 33.97 | a | 42.03 | 51.75 | a | 62.18 | b | 68.54 | c | 66.48 | b | 59.46 | b | 46.12 | c | 37.98 | 28.06 | 45.79 | |||||
2002 | 25.76 | 27.41 | 28.89 | 44.88 | b | 50.13 | d | 64.70 | b | 70.02 | 64.13 | e | 58.16 | a | 38.93 | a | 32.95 | b | 30.53 | b | 44.71 | |||||
2003 | 34.71 | b | 24.45 | 35.48 | b | 43.05 | a | 50.30 | c | 55.62 | 70.93 | b | 67.14 | b | 53.45 | a | 49.47 | 31.47 | a | 29.39 | 45.45 | |||||
2004 | 29.37 | a | 26.38 | a | 39.62 | b | 42.19 | a | 51.69 | 57.24 | a | 64.69 | e | 62.85 | a | 57.24 | a | 45.35 | 33.12 | 29.32 | a | 44.92 | ||||
2005 | 31.18 | 30.89 | 34.45 | 41.93 | 51.76 | f | 57.08 | 69.65 | 64.29 | b | 59.05 | b | 47.95 | c | 37.07 | a | 26.50 | 45.46 | a | |||||||
2006 | 31.80 | c | 26.14 | 30.23 | a | 47.12 | a | 52.75 | a | 64.76 | c | 70.13 | 66.10 | a | 52.50 | a | 43.95 | a | 36.38 | b | 28.02 | 45.82 | ||||
2007 | 21.91 | b | 29.86 | 40.52 | a | 41.77 | b | 51.57 | a | 61.75 | b | 69.58 | 68.18 | 57.31 | a | 47.90 | a | 35.92 | 22.39 | 45.72 | ||||||
2008 | 23.03 | a | 28.28 | 31.84 | 37.37 | c | 48.73 | c | 58.48 | a | 69.06 | 65.36 | c | 54.35 | 46.55 | 39.26 | a | 25.61 | 43.99 | |||||||
2009 | 28.38 | a | 32.09 | 35.62 | a | 39.30 | 52.14 | b | 56.79 | a | ----- | z | 62.72 | a | 57.95 | b | 37.26 | 36.33 | a | 20.40 | 41.72 | a | ||||
2010 | 28.72 | a | 24.12 | b | 35.56 | 40.62 | b | 46.61 | c | 60.15 | 65.90 | 66.13 | a | 59.50 | a | 48.17 | a | 33.64 | a | 30.03 | a | 44.93 | ||||
2011 | 26.81 | 25.29 | 35.87 | 41.00 | 45.79 | 58.95 | 69.26 | 68.60 | 57.98 | 45.98 | 34.75 | 26.18 | a | 44.70 | ||||||||||||
2012 | 32.61 | 24.97 | 42.81 | 47.38 | a | 54.05 | 66.62 | 69.50 | 67.60 | 59.75 | 43.80 | a | 40.17 | a | 25.84 | 47.92 | ||||||||||
2013 | 28.72 | a | 25.66 | 33.29 | 35.41 | a | 50.73 | a | 62.73 | 66.32 | 67.26 | 58.30 | 40.60 | 33.55 | 24.33 | a | 43.91 | |||||||||
2014 | 27.90 | 24.45 | 35.31 | 41.92 | 49.88 | a | 58.45 | 64.19 | 63.39 | 57.67 | 49.07 | a | 32.17 | a | 28.50 | b | 44.41 | |||||||||
2015 | 31.82 | k | 40.17 | s | 47.75 | s | ----- | z | 49.29 | l | 63.65 | ----- | z | ----- | z | ----- | z | 52.50 | h | 32.47 | 26.38 | a | 40.83 | i | ||
2016 | 28.52 | 32.90 | e | 35.16 | c | 41.87 | ----- | z | 64.33 | 68.97 | 63.84 | 57.77 | 50.72 | a | 40.10 | 24.16 | 46.21 | a | ||||||||
2017 | 25.56 | 32.44 | a | 41.08 | 43.98 | e | 48.65 | 60.62 | 67.95 | 63.27 | 56.98 | 44.02 | 40.15 | 30.73 | a | 46.29 | ||||||||||
2018 | 31.94 | 25.50 | 35.74 | 41.73 | 53.27 | 63.25 | 67.02 | 64.42 | 59.90 | 43.45 | a | 31.20 | b | 27.10 | 45.38 | |||||||||||
2019 | 30.18 | 25.41 | 30.34 | 42.88 | 45.29 | 57.47 | 67.27 | 67.05 | ----- | z | 37.76 | ----- | z | ----- | z | 44.85 | c | |||||||||
2020 | ----- | z | ----- | z | 35.78 | b | 40.17 | 51.90 | ----- | z | ----- | z | 69.60 | 57.68 | 45.42 | 38.65 | ----- | z | 48.46 | e | ||||||
2021 | 28.56 | 20.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.42 | 60.96 | b | 47.63 | a | 41.63 | d | 32.34 | b | 42.64 | e | |||
2022 | 28.87 | d | 23.21 | b | 33.95 | 40.22 | 49.68 | 63.22 | 69.73 | 66.89 | ----- | z | 46.97 | 29.30 | 27.12 | b | 43.56 | a | ||||||||
2023 | 25.48 | a | 28.00 | a | 29.03 | 40.02 | 53.23 | a | 58.23 | ----- | z | ----- | z | ----- | z | ----- | z | 37.67 | ----- | z | 38.81 | e | ||||
2024 | 23.45 | 32.06 | b | 34.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.98 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.10 | 27.87 | 34.78 | 41.19 | 50.31 | 60.15 | 67.75 | 65.75 | 57.29 | 45.17 | 35.58 | 27.43 | 45.09 | |||||||||||||
S.D. | 3.08 | 3.52 | 3.43 | 3.08 | 2.72 | 3.29 | 2.13 | 2.01 | 2.53 | 3.37 | 4.04 | 2.84 | 1.02 | |||||||||||||
SKEW | -0.09 | 0.21 | 0.36 | -0.12 | -0.73 | 0.07 | -0.43 | 0.03 | -0.40 | -0.85 | -0.27 | -0.48 | 0.82 | |||||||||||||
MAX | 34.71 | 34.31 | 42.81 | 47.38 | 54.47 | 66.62 | 70.93 | 69.60 | 61.93 | 50.72 | 43.30 | 32.34 | 47.92 | |||||||||||||
MIN | 21.91 | 20.95 | 28.89 | 34.62 | 43.82 | 53.57 | 63.48 | 62.72 | 52.42 | 37.26 | 25.88 | 20.40 | 43.45 | |||||||||||||
YRS | 28 | 28 | 28 | 27 | 25 | 27 | 24 | 27 | 25 | 27 | 28 | 27 | 20 |