YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.00 | 54.38 | 46.65 | a | 37.38 | 29.37 | a | 45.16 | g | |||
1981 | 33.98 | 32.64 | 38.44 | 42.60 | 47.71 | b | 54.32 | 58.87 | 62.22 | a | 55.02 | 42.92 | 37.07 | 34.15 | 44.99 | |||||||||||
1982 | 22.69 | b | 28.43 | a | 35.45 | a | 38.14 | a | 47.23 | a | 55.76 | a | 59.43 | a | 59.55 | b | 50.80 | b | 44.33 | b | 32.63 | d | 28.37 | a | 41.90 | |
1983 | 32.57 | c | 33.66 | c | 38.23 | 39.90 | 49.29 | 52.36 | a | 55.66 | b | 60.10 | a | 52.45 | 45.97 | b | 36.02 | b | 28.14 | f | 45.11 | a | ||||
1984 | 26.52 | b | 30.14 | a | 38.50 | 40.68 | b | 48.87 | 52.45 | 62.84 | 61.06 | 52.40 | a | 41.03 | 34.05 | 21.91 | c | 42.54 | ||||||||
1985 | 20.48 | a | 27.52 | 31.77 | ----- | z | 48.16 | 57.05 | b | 65.60 | 58.95 | 49.08 | 43.43 | a | 26.40 | 23.63 | a | 41.10 | a | |||||||
1986 | 33.47 | 36.54 | 42.08 | a | 42.02 | 47.73 | a | 59.50 | a | 57.95 | a | 64.52 | 49.53 | 46.35 | a | 37.57 | a | 30.87 | 45.68 | |||||||
1987 | 25.55 | a | 33.14 | 37.71 | 47.41 | b | 52.97 | a | 59.04 | d | 59.09 | c | 63.07 | c | 58.45 | b | 51.95 | a | 36.86 | b | 27.43 | a | 46.06 | |||
1988 | 22.56 | 31.46 | b | 37.74 | 45.52 | b | 47.17 | b | 55.31 | d | 64.32 | 62.07 | c | 55.75 | 52.85 | a | 34.53 | a | 26.10 | 44.62 | ||||||
1989 | 22.12 | b | 21.39 | a | 35.93 | a | 46.43 | 47.41 | b | 58.30 | b | 61.57 | c | 59.68 | a | 55.02 | a | 44.76 | 35.43 | b | 30.90 | a | 43.25 | |||
1990 | 31.76 | 27.13 | b | 36.88 | b | 48.33 | a | 46.89 | 55.05 | a | 64.28 | d | 62.88 | b | 58.13 | c | 43.63 | a | 34.66 | b | 21.05 | 44.22 | ||||
1991 | 30.26 | 39.67 | d | 35.45 | b | 39.96 | b | 45.12 | b | 53.14 | a | 64.78 | b | 62.85 | 59.25 | b | 48.37 | 37.30 | 30.36 | c | 45.54 | |||||
1992 | 26.16 | b | 38.26 | 42.52 | a | 46.45 | b | 56.33 | a | 58.61 | b | 62.57 | b | 63.70 | a | 55.05 | a | 47.15 | a | 33.68 | b | 23.58 | 46.17 | |||
1993 | 18.65 | a | 23.38 | 37.07 | a | 41.04 | c | 51.76 | b | 52.40 | f | 55.19 | d | 59.50 | b | 56.16 | b | 47.05 | b | 31.19 | a | 29.58 | a | 40.96 | a | |
1994 | 31.17 | b | 31.34 | 41.75 | c | 44.61 | b | 50.60 | f | 55.08 | e | 64.87 | d | 61.78 | a | 56.80 | b | 43.16 | b | 25.16 | a | 24.47 | 43.65 | a | ||
1995 | 32.94 | 37.98 | d | 36.80 | c | 40.50 | b | 49.77 | 54.98 | b | 60.98 | b | 59.09 | b | 56.70 | 44.68 | 42.12 | 33.39 | 45.83 | |||||||
1996 | 30.05 | 32.79 | 38.74 | 42.90 | 47.50 | a | 56.40 | 65.98 | 63.34 | 52.90 | 44.84 | 38.97 | a | 31.83 | a | 45.52 | ||||||||||
1997 | 27.69 | b | 33.59 | 39.82 | 41.55 | 52.58 | 54.52 | c | 61.95 | b | 62.89 | c | 55.03 | 44.75 | a | 37.80 | 27.52 | 44.97 | ||||||||
1998 | 33.26 | b | 33.17 | a | 37.32 | a | 42.41 | b | 44.59 | b | 55.65 | 66.30 | a | 64.66 | 58.69 | a | 43.95 | c | 34.98 | 27.02 | 45.17 | |||||
1999 | 29.87 | 27.43 | a | 32.16 | 40.62 | a | 46.95 | 55.48 | a | 61.00 | 61.95 | 55.87 | 47.76 | 40.33 | 31.38 | b | 44.23 | |||||||||
2000 | 31.23 | 35.47 | 36.82 | 45.53 | 49.45 | 59.02 | 61.91 | c | 63.14 | c | 53.67 | c | 44.07 | d | 29.80 | c | 29.50 | a | 44.97 | |||||||
2001 | 27.86 | b | 29.77 | 40.05 | b | 39.36 | b | 54.82 | 54.41 | a | 62.18 | a | 64.70 | c | 57.57 | b | 47.35 | 36.90 | a | 29.48 | b | 45.37 | ||||
2002 | 26.87 | 31.39 | 35.37 | a | 45.00 | 49.46 | c | 58.63 | c | 66.12 | a | 60.13 | a | 56.74 | a | 44.62 | a | 37.02 | a | 33.03 | a | 45.37 | ||||
2003 | 34.21 | 34.38 | 39.07 | b | 39.55 | 48.76 | 59.14 | b | 66.56 | 62.88 | a | 58.19 | a | 48.84 | 32.93 | 31.36 | c | 46.32 | ||||||||
2004 | 29.80 | c | 31.55 | 42.72 | b | 45.23 | b | 48.79 | c | 57.17 | i | ----- | z | 66.64 | b | 53.50 | f | 46.78 | b | 33.76 | a | 34.14 | c | 42.16 | c | |
2005 | 29.74 | f | 33.25 | d | 41.38 | b | 42.90 | a | 51.89 | d | 51.70 | 64.09 | b | 63.35 | e | 52.64 | b | 44.03 | b | 36.06 | d | 22.59 | h | 48.13 | b | |
2006 | 27.93 | b | 27.06 | c | 28.98 | 42.81 | a | 50.73 | a | 59.46 | c | 67.22 | a | 61.05 | 54.37 | c | 44.50 | f | 29.25 | v | 25.52 | f | 46.62 | c | ||
2007 | 20.64 | f | 31.76 | c | 38.94 | e | 42.67 | i | 49.62 | b | 55.58 | 66.42 | k | 61.86 | q | 52.14 | e | 44.86 | i | 37.00 | 25.22 | b | 41.47 | e | ||
2008 | 24.12 | o | ----- | z | ----- | z | 37.79 | r | 49.25 | i | 50.09 | s | ----- | z | ----- | z | ----- | z | 46.53 | a | 39.92 | 28.71 | 38.39 | i | ||
2009 | 30.37 | 32.41 | 34.79 | 41.57 | 51.13 | 56.31 | a | 63.87 | 61.55 | c | 57.87 | c | 43.68 | a | 34.22 | a | 25.89 | 44.47 | ||||||||
2010 | 34.44 | 34.88 | 37.50 | 38.95 | a | 43.95 | a | 55.00 | b | 63.23 | a | 59.81 | 54.35 | 47.58 | 33.84 | a | 31.94 | 44.62 | ||||||||
2011 | 27.98 | 31.54 | a | 36.87 | 38.82 | 44.05 | 53.48 | a | 59.90 | 62.06 | 58.32 | 46.03 | 33.92 | 30.44 | 43.62 | |||||||||||
2012 | 31.98 | 32.14 | 34.47 | 44.40 | 49.98 | 53.93 | 64.45 | t | 66.62 | w | 58.30 | 47.06 | 37.83 | 29.06 | 41.92 | b | ||||||||||
2013 | 20.82 | 28.62 | 36.97 | 43.03 | a | 51.61 | c | 57.63 | 68.00 | a | 62.32 | a | 56.34 | b | 42.82 | 36.74 | a | 22.45 | a | 43.95 | ||||||
2014 | 31.89 | 35.95 | 41.02 | a | 44.43 | a | 51.91 | b | 56.54 | b | 66.42 | 63.81 | 57.74 | a | 49.02 | 37.22 | a | 36.31 | 47.69 | |||||||
2015 | 36.05 | 41.34 | 41.23 | a | 40.64 | b | 51.23 | 62.23 | 64.13 | 62.90 | 54.30 | 50.09 | b | 33.07 | 28.18 | 47.12 | ||||||||||
2016 | 27.53 | a | 32.57 | a | 40.13 | 49.13 | 50.82 | a | 57.62 | 62.32 | 64.24 | 54.26 | a | 45.02 | a | 39.71 | a | 24.00 | 45.61 | |||||||
2017 | 20.34 | 32.76 | c | 37.89 | 42.09 | a | 52.06 | 58.90 | a | 66.31 | 66.10 | 57.73 | 45.32 | a | 38.27 | 30.15 | 45.66 | |||||||||
2018 | 35.85 | 32.41 | 36.12 | a | 44.13 | 52.92 | 56.17 | 65.40 | 63.06 | 54.60 | 46.63 | 37.80 | 28.98 | a | 46.17 | |||||||||||
2019 | 31.65 | 28.65 | a | 34.02 | 45.20 | 50.16 | 56.77 | 61.66 | 63.61 | 54.53 | ----- | z | 38.52 | 31.15 | 45.08 | a | ||||||||||
2020 | ----- | z | 35.71 | 38.29 | 43.93 | 51.38 | a | ----- | z | 62.76 | 65.45 | 58.95 | 48.21 | 34.42 | 29.11 | 46.82 | b | |||||||||
2021 | 31.74 | 32.34 | 35.81 | 42.93 | a | 49.08 | 61.33 | 67.45 | 63.31 | 55.52 | 45.35 | 37.17 | ----- | z | 47.46 | a | ||||||||||
2022 | 29.11 | 30.57 | 39.10 | 37.92 | 44.95 | 55.50 | 65.50 | 66.21 | 58.37 | 48.95 | 29.90 | 25.18 | f | 46.01 | a | |||||||||||
2023 | 26.58 | 26.89 | 27.68 | 38.52 | 51.21 | 55.78 | 64.19 | 64.02 | b | 52.97 | 45.32 | 35.65 | 32.15 | 43.41 | ||||||||||||
2024 | 33.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.06 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.98 | 31.98 | 37.37 | 42.68 | 49.46 | 56.36 | 63.14 | 62.49 | 55.40 | 46.07 | 35.48 | 28.82 | 45.00 | |||||||||||||
S.D. | 4.56 | 4.01 | 3.29 | 2.87 | 2.82 | 2.44 | 3.12 | 2.09 | 2.57 | 2.46 | 3.42 | 3.62 | 1.28 | |||||||||||||
SKEW | -0.62 | -0.18 | -0.83 | 0.26 | -0.02 | 0.30 | -0.71 | -0.17 | -0.52 | 0.64 | -0.98 | -0.33 | -0.37 | |||||||||||||
MAX | 36.05 | 41.34 | 42.72 | 49.13 | 56.33 | 62.23 | 68.00 | 66.64 | 59.25 | 52.85 | 42.12 | 36.31 | 47.69 | |||||||||||||
MIN | 18.65 | 21.39 | 27.68 | 37.92 | 43.95 | 51.70 | 55.19 | 58.00 | 49.08 | 41.03 | 25.16 | 21.05 | 41.90 | |||||||||||||
YRS | 40 | 42 | 42 | 40 | 41 | 39 | 39 | 41 | 42 | 41 | 43 | 39 | 29 |