YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.55 | 39.97 | 37.98 | a | 43.17 | i | ||
1981 | 34.89 | 35.59 | 38.42 | 51.70 | 55.35 | 70.28 | 73.15 | 70.38 | a | 67.10 | 49.10 | 42.20 | 32.97 | 51.76 | ||||||||||||
1982 | 26.18 | a | 29.85 | b | 38.87 | a | 44.91 | a | 56.05 | 65.41 | a | 72.34 | 71.55 | 63.62 | 46.73 | 35.79 | a | 29.10 | a | 48.37 | ||||||
1983 | 30.23 | 35.46 | 39.26 | d | 43.21 | b | 54.03 | a | 64.32 | 71.79 | 72.81 | ----- | z | 53.85 | 38.50 | 29.33 | a | 48.44 | a | |||||||
1984 | 25.42 | 30.41 | a | 38.28 | a | 44.09 | a | 62.80 | a | 64.87 | 74.11 | 72.47 | a | 64.95 | b | 44.53 | 38.38 | 28.36 | b | 49.06 | ||||||
1985 | 26.09 | c | 28.07 | 38.18 | 50.55 | 59.08 | a | 70.67 | 74.05 | 74.10 | 59.32 | 51.08 | 36.96 | b | 31.87 | 50.00 | ||||||||||
1986 | 33.90 | b | 36.89 | a | 46.45 | 47.40 | 56.42 | 70.95 | 72.53 | 73.82 | 58.90 | 47.31 | 38.09 | b | 30.22 | a | 51.07 | |||||||||
1987 | 27.02 | b | 32.07 | 36.00 | 50.98 | 57.13 | a | 69.77 | 70.56 | e | 69.05 | a | 63.77 | 56.15 | 36.75 | 26.60 | 49.65 | |||||||||
1988 | 24.45 | a | 33.29 | 37.60 | a | 49.16 | b | 57.02 | 70.76 | a | 76.58 | a | 72.19 | 62.35 | 58.42 | 38.50 | a | 28.00 | b | 50.69 | ||||||
1989 | 22.91 | b | 28.04 | 45.14 | c | 54.50 | 59.87 | a | 67.58 | 76.21 | 70.35 | 65.88 | 52.79 | 44.03 | a | 33.16 | b | 51.71 | ||||||||
1990 | 29.00 | c | 32.73 | 44.56 | 52.83 | 56.78 | a | 72.84 | b | 74.57 | c | 72.19 | 67.03 | 52.15 | 39.18 | 22.68 | 51.38 | |||||||||
1991 | 23.71 | 36.46 | 36.91 | c | 45.13 | 55.97 | 67.76 | a | 74.23 | 72.53 | 64.39 | b | 55.31 | 37.02 | a | 25.36 | b | 49.57 | ||||||||
1992 | 25.32 | a | 35.98 | 43.33 | a | 55.73 | 60.26 | 67.20 | 71.20 | a | 72.67 | a | 66.08 | 57.67 | a | 33.81 | a | 25.45 | 51.23 | |||||||
1993 | 29.89 | 32.48 | 43.35 | 48.09 | b | 59.92 | 66.91 | a | 73.81 | 72.18 | 65.45 | 51.42 | a | 35.42 | 29.95 | 50.74 | ||||||||||
1994 | 33.31 | 31.96 | a | 46.71 | 48.93 | b | 60.92 | 75.33 | 78.82 | 77.55 | 66.68 | 51.47 | 34.97 | a | 31.40 | 53.17 | ||||||||||
1995 | 30.57 | a | 42.86 | 42.38 | a | 45.25 | 52.48 | a | 64.45 | 74.23 | 76.85 | 67.46 | b | 53.02 | b | 45.52 | 36.13 | 52.60 | ||||||||
1996 | 32.21 | b | 40.37 | b | ----- | z | 49.37 | 62.05 | b | 72.67 | 78.85 | 76.42 | 63.12 | 52.03 | b | 40.64 | b | 31.59 | b | 54.48 | a | |||||
1997 | 30.00 | a | 32.52 | a | 46.30 | a | 45.16 | a | 61.85 | a | 70.70 | 74.92 | 72.74 | 64.60 | 52.53 | 40.03 | 28.95 | 51.69 | ||||||||
1998 | 34.43 | b | 33.57 | a | 40.60 | a | 45.41 | a | 59.00 | a | 65.62 | 78.18 | 76.71 | 67.18 | b | 51.32 | a | 40.36 | a | 30.35 | a | 51.89 | ||||
1999 | 35.37 | a | 36.37 | b | 47.66 | 44.69 | c | 56.08 | 68.81 | a | 75.03 | 71.40 | 64.28 | a | 57.24 | 47.30 | 31.85 | a | 53.01 | |||||||
2000 | 34.85 | 38.45 | 41.34 | 54.60 | a | 63.64 | b | 72.12 | 78.81 | 77.48 | a | 67.03 | 53.95 | 32.53 | a | 33.29 | 54.01 | |||||||||
2001 | 30.18 | 34.50 | a | 43.10 | 49.89 | b | 62.52 | 72.37 | 76.48 | 74.40 | 71.05 | 57.97 | b | 44.93 | b | 28.67 | a | 53.84 | ||||||||
2002 | 28.82 | a | 32.39 | 39.42 | a | 55.79 | b | 61.36 | b | 76.46 | b | 80.23 | a | 76.11 | 65.03 | 51.05 | b | 38.95 | a | 32.73 | 53.20 | |||||
2003 | 37.74 | 33.59 | a | 41.68 | 48.88 | d | 62.65 | a | 70.95 | b | 82.89 | 76.85 | a | 67.96 | b | 59.95 | b | 37.78 | a | 32.05 | a | 54.41 | ||||
2004 | 28.38 | a | 31.29 | a | 49.90 | 49.67 | a | 61.06 | 71.73 | 77.19 | 73.81 | 65.45 | a | 52.91 | b | 37.48 | 31.12 | a | 52.50 | |||||||
2005 | 36.14 | b | 36.36 | 41.93 | b | 50.38 | b | 60.40 | a | 67.22 | 80.44 | 71.58 | 65.73 | b | 54.66 | c | 41.96 | b | 31.66 | b | 53.20 | |||||
2006 | 32.68 | 34.50 | b | 39.58 | 53.11 | c | 65.03 | a | 74.91 | b | 79.13 | a | 73.05 | a | 61.38 | a | 49.12 | b | 42.26 | a | 30.23 | a | 52.92 | |||
2007 | 27.73 | a | 37.07 | 45.58 | 50.48 | c | 61.56 | 73.29 | a | 80.26 | 76.08 | 67.24 | a | 51.95 | 45.45 | 27.39 | 53.67 | |||||||||
2008 | 25.30 | a | 32.22 | 40.24 | 44.80 | c | 55.20 | a | 69.28 | 77.53 | 73.66 | 65.33 | a | 54.08 | 42.68 | 27.85 | 50.68 | |||||||||
2009 | 30.16 | 35.39 | 40.79 | 45.62 | 60.89 | c | 64.95 | 77.36 | c | 73.50 | b | 66.09 | a | 46.43 | a | 41.27 | 22.15 | a | 50.38 | |||||||
2010 | 24.97 | 26.88 | 36.66 | 46.50 | 51.76 | 69.13 | 75.05 | 69.70 | a | 67.17 | a | 51.82 | 35.78 | 33.67 | a | 49.09 | ||||||||||
2011 | 24.77 | 28.18 | 40.73 | 44.29 | a | 51.50 | a | 68.25 | 74.74 | 76.43 | a | 65.34 | a | 51.73 | 37.67 | 27.15 | 49.23 | |||||||||
2012 | 31.48 | 30.95 | a | 42.56 | 51.45 | 61.52 | 73.57 | 75.06 | 75.24 | 66.70 | 53.85 | 44.05 | 28.10 | 52.88 | ||||||||||||
2013 | 20.94 | 28.43 | 41.94 | 45.62 | 58.27 | 73.95 | 77.26 | 72.44 | 64.13 | c | 48.74 | 38.38 | 23.29 | 49.45 | ||||||||||||
2014 | 31.32 | 37.59 | 41.68 | 46.60 | 57.02 | 69.65 | 77.21 | 69.65 | 67.93 | 55.44 | 38.73 | 31.29 | 52.01 | |||||||||||||
2015 | 30.84 | 39.07 | 46.29 | 47.87 | 54.50 | 71.98 | 71.40 | 72.92 | 69.32 | 55.71 | 35.90 | 26.24 | 51.84 | |||||||||||||
2016 | 25.48 | 34.60 | 43.61 | 47.33 | 55.60 | a | 75.65 | 76.76 | 71.52 | 64.15 | 55.89 | 43.28 | 28.53 | 51.87 | ||||||||||||
2017 | 26.98 | 38.27 | 46.90 | 46.92 | 57.74 | 74.72 | 77.56 | 74.31 | 64.58 | 50.71 | 46.65 | 34.65 | 53.33 | |||||||||||||
2018 | 32.81 | 34.21 | 39.98 | 51.48 | 61.97 | 74.15 | 79.03 | 76.26 | 70.27 | 47.23 | 36.58 | 27.69 | 52.64 | |||||||||||||
2019 | 26.35 | 26.91 | 38.63 | 50.13 | 50.97 | 66.87 | 77.26 | 77.10 | 68.15 | 46.15 | 41.12 | 28.24 | 49.82 | |||||||||||||
2020 | 25.42 | 30.60 | 41.94 | 48.66 | a | 62.66 | 70.12 | 77.08 | 80.63 | 66.28 | a | 56.92 | 40.98 | 27.98 | 52.44 | |||||||||||
2021 | 28.08 | 32.84 | 38.63 | a | 47.77 | d | 60.21 | 75.50 | 78.48 | a | 74.65 | 67.98 | 48.19 | 44.67 | 31.90 | a | 52.41 | |||||||||
2022 | 29.23 | 30.62 | 39.98 | 48.62 | d | 58.16 | 71.77 | 77.94 | 74.15 | 70.43 | a | 52.77 | 33.37 | 29.11 | 51.35 | |||||||||||
2023 | 28.42 | 26.14 | 32.82 | a | 45.88 | 61.13 | 66.95 | 80.74 | 74.68 | 67.30 | 54.69 | 40.90 | 32.55 | 51.02 | ||||||||||||
2024 | 31.73 | 35.47 | 40.05 | 47.41 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.75 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.22 | 33.44 | 41.53 | 48.59 | 58.61 | 70.29 | 76.30 | 73.82 | 65.81 | 52.44 | 39.70 | 29.75 | 51.60 | |||||||||||||
S.D. | 3.92 | 3.80 | 3.57 | 3.30 | 3.53 | 3.40 | 2.87 | 2.52 | 2.57 | 3.60 | 3.67 | 3.34 | 1.55 | |||||||||||||
SKEW | 0.14 | 0.08 | 0.15 | 0.47 | -0.43 | -0.06 | -0.07 | 0.31 | -0.52 | -0.14 | 0.19 | -0.09 | -0.24 | |||||||||||||
MAX | 37.74 | 42.86 | 49.90 | 55.79 | 65.03 | 76.46 | 82.89 | 80.63 | 71.05 | 59.95 | 47.30 | 37.98 | 54.41 | |||||||||||||
MIN | 20.94 | 26.14 | 32.82 | 43.21 | 50.97 | 64.32 | 70.56 | 69.05 | 58.90 | 44.53 | 32.53 | 22.15 | 48.37 | |||||||||||||
YRS | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 44 | 44 | 44 | 41 |