YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | 39.83 | 51.56 | 55.76 | a | 64.81 | 61.81 | 55.98 | 41.90 | 34.48 | 20.60 | 47.42 | c | ||||||||
1967 | 26.65 | 26.23 | 32.35 | 36.58 | 46.84 | 53.35 | 63.55 | 63.63 | 56.17 | 45.82 | 33.32 | 17.00 | 41.79 | |||||||||||||
1968 | 20.42 | 26.34 | 33.60 | 34.91 | a | 45.55 | 56.34 | a | 63.11 | 57.45 | 51.32 | 43.05 | 28.71 | a | 19.81 | 40.05 | ||||||||||
1969 | 24.71 | 17.00 | 20.68 | 40.02 | 53.40 | 52.42 | 63.69 | 64.76 | 56.03 | 35.94 | 32.75 | 25.08 | a | 40.54 | ||||||||||||
1970 | 23.42 | 29.57 | 27.06 | 33.07 | 47.68 | 55.82 | 62.74 | 65.47 | 49.40 | 37.61 | 31.35 | 18.47 | 40.14 | |||||||||||||
1971 | 24.97 | 23.70 | 28.61 | 38.10 | 46.87 | 56.18 | 61.87 | 63.97 | a | 49.45 | 39.26 | 25.05 | 15.81 | 39.49 | ||||||||||||
1972 | 18.19 | 25.02 | 35.56 | 38.75 | 48.32 | 56.70 | 61.18 | 60.82 | 51.55 | 41.94 | 25.52 | 17.08 | 40.05 | |||||||||||||
1973 | 12.60 | a | 14.04 | 24.55 | a | 32.97 | a | 48.42 | 56.63 | 61.21 | 61.63 | 50.76 | a | 45.24 | 28.00 | 24.48 | 38.38 | |||||||||
1974 | 18.29 | 21.93 | 34.69 | 37.27 | 48.37 | 59.27 | 63.63 | a | 59.81 | 53.13 | 45.08 | 31.92 | 21.60 | 41.25 | ||||||||||||
1975 | 22.06 | 22.62 | 29.31 | 32.22 | 44.13 | 52.34 | a | 63.39 | 58.81 | 52.78 | 41.85 | 29.32 | 27.68 | 39.71 | ||||||||||||
1976 | 24.92 | 24.95 | 27.56 | 39.23 | 50.55 | 54.62 | 64.13 | 59.29 | 54.22 | c | 43.23 | a | 33.31 | a | 27.85 | 41.99 | ||||||||||
1977 | 23.48 | 29.38 | 27.11 | 43.00 | 46.05 | 61.93 | 63.60 | 61.11 | 54.83 | 46.71 | 32.89 | b | 28.93 | a | 43.25 | |||||||||||
1978 | 24.37 | 25.57 | a | 34.76 | 40.83 | 46.94 | 57.15 | 64.21 | 59.97 | a | 52.28 | 47.65 | 25.25 | 13.81 | 41.07 | |||||||||||
1979 | 10.03 | a | 22.74 | a | 31.29 | 38.55 | 48.65 | 56.30 | 63.84 | 61.26 | 57.87 | 46.19 | 25.42 | 27.26 | 40.78 | |||||||||||
1980 | 22.26 | 26.69 | 27.15 | 39.13 | 46.87 | 57.20 | 64.57 | a | 60.76 | 55.27 | 44.37 | 32.70 | 32.45 | 42.45 | ||||||||||||
1981 | 26.16 | 30.16 | 34.21 | 44.68 | 47.73 | 59.83 | 64.48 | 63.58 | 56.98 | 41.11 | 34.05 | 27.61 | 44.22 | |||||||||||||
1982 | 21.15 | a | 23.07 | 30.90 | a | 35.53 | 46.60 | a | 55.12 | b | 62.24 | 64.82 | a | 51.81 | c | 40.19 | b | 25.85 | 21.18 | a | 39.87 | |||||
1983 | 26.47 | a | 25.12 | 31.65 | a | 32.71 | a | 44.48 | 55.14 | a | 62.87 | h | 64.18 | 55.09 | b | 45.58 | a | 28.95 | 17.03 | a | 38.76 | a | ||||
1984 | 20.05 | 19.43 | b | 28.53 | 33.55 | a | 48.50 | c | 54.67 | a | 62.16 | 60.81 | 51.30 | c | 35.53 | b | 26.53 | a | 14.68 | a | 37.98 | |||||
1985 | 14.72 | a | 19.02 | 26.59 | b | 41.83 | 50.26 | b | 60.09 | a | 64.28 | d | 62.75 | a | 50.12 | b | 42.93 | a | 26.72 | 23.37 | a | 40.22 | ||||
1986 | 24.78 | h | 39.91 | q | 38.89 | 42.32 | b | 49.93 | d | 61.97 | 62.68 | a | 64.21 | 48.39 | c | 41.84 | b | 31.19 | a | 24.55 | 46.60 | b | ||||
1987 | 19.02 | d | 21.58 | p | 30.48 | a | 42.84 | a | 50.19 | 59.76 | a | 61.69 | 60.35 | 56.43 | 48.10 | ----- | z | 19.70 | a | 44.86 | b | |||||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | 49.98 | 63.53 | 68.10 | 64.72 | d | 52.54 | d | 51.16 | l | 30.92 | 19.77 | 49.94 | e | |||||
1989 | 22.42 | 13.82 | 34.71 | s | 45.75 | 49.87 | 56.18 | 66.61 | 62.24 | h | 54.92 | 49.41 | n | 35.20 | 26.92 | 41.30 | c | |||||||||
1990 | 26.47 | 24.38 | 36.02 | 45.00 | 47.97 | 59.73 | 65.31 | 62.92 | 58.97 | 45.82 | 33.91 | a | 16.39 | 43.57 | ||||||||||||
1991 | 20.82 | 31.32 | 31.82 | 38.32 | b | 47.21 | 57.54 | b | 64.60 | 63.58 | 59.08 | q | 44.88 | c | 30.45 | 19.62 | c | 40.92 | a | |||||||
1992 | 20.50 | 28.88 | 38.21 | 47.38 | 53.90 | 58.82 | 62.60 | 64.77 | 56.25 | 47.52 | 26.00 | 16.58 | 43.45 | |||||||||||||
1993 | 12.66 | 11.75 | 34.29 | 39.52 | 51.73 | 54.85 | 58.79 | 59.42 | 54.50 | 43.11 | 27.43 | 23.65 | 39.31 | |||||||||||||
1994 | 27.48 | 23.25 | 36.79 | 43.14 | a | 53.15 | a | 61.77 | 65.95 | 66.02 | a | 57.79 | a | 43.31 | b | 25.45 | a | 23.94 | 44.00 | |||||||
1995 | 20.97 | a | 31.68 | 34.03 | 39.75 | 45.10 | a | 55.78 | 63.32 | 65.23 | 56.17 | 43.76 | 38.25 | 28.53 | 43.55 | |||||||||||
1996 | 23.90 | b | 26.88 | 32.82 | 41.22 | a | 50.08 | 61.08 | 65.76 | 64.02 | 53.32 | 43.02 | 34.27 | 26.29 | 43.55 | |||||||||||
1997 | 22.39 | 21.23 | 34.42 | a | 37.13 | 51.77 | 59.93 | a | 62.40 | 64.29 | 56.47 | 43.39 | 29.40 | 19.60 | 41.87 | |||||||||||
1998 | 26.61 | 24.67 | d | 31.06 | 37.76 | g | 48.92 | 53.17 | a | 67.06 | 64.84 | 58.43 | 42.90 | 33.95 | b | 24.55 | 43.29 | a | ||||||||
1999 | 27.61 | 26.02 | 34.53 | 37.55 | 47.48 | 56.30 | 64.71 | 63.19 | 52.73 | 47.79 | 37.50 | 25.27 | 43.39 | |||||||||||||
2000 | 25.66 | 30.24 | 33.32 | a | 45.31 | a | 52.45 | 59.00 | 66.03 | a | 66.02 | a | 52.78 | a | 42.52 | 22.32 | 24.52 | 43.35 | ||||||||
2001 | 20.68 | 21.16 | 33.19 | 41.75 | 52.52 | 58.86 | a | 65.24 | 64.98 | 58.72 | 46.26 | 32.57 | 19.10 | a | 42.92 | |||||||||||
2002 | 21.61 | 23.77 | 29.48 | 42.13 | 50.20 | a | 60.08 | 66.82 | a | 62.68 | 56.12 | 41.02 | 30.45 | 26.44 | 42.57 | |||||||||||
2003 | 32.50 | a | 23.18 | 34.60 | 41.75 | 50.97 | 57.22 | a | 68.37 | 65.43 | a | 55.40 | 49.34 | 24.60 | a | 24.66 | 44.00 | |||||||||
2004 | 17.85 | a | 19.12 | a | 37.66 | 42.83 | a | 49.83 | a | 58.12 | a | 63.40 | 60.32 | 53.75 | 44.52 | a | 30.42 | 26.97 | 42.07 | |||||||
2005 | 27.08 | 24.68 | 33.79 | 41.05 | 49.73 | 55.00 | a | 66.50 | 61.92 | 54.05 | a | 45.74 | 34.27 | 24.19 | 43.17 | |||||||||||
2006 | 26.08 | a | 25.54 | b | 29.52 | b | 43.75 | 51.89 | 60.33 | 68.16 | 62.68 | 51.82 | 41.41 | b | 31.05 | 22.30 | a | 42.88 | ||||||||
2007 | 16.08 | a | 28.11 | 37.95 | 42.95 | 51.35 | 61.10 | 69.50 | b | 66.48 | c | 54.92 | 45.02 | b | 34.98 | a | 20.47 | b | 44.08 | |||||||
2008 | 14.15 | 22.98 | a | 28.20 | a | ----- | z | 47.42 | 55.93 | a | 66.42 | a | 63.85 | a | 54.28 | 45.21 | 36.60 | 23.53 | a | 41.69 | a | |||||
2009 | 27.77 | a | 26.35 | a | 30.83 | a | 39.53 | 51.85 | a | 53.79 | a | 63.90 | 60.97 | a | 57.83 | c | 39.52 | d | 33.21 | b | 17.18 | a | 41.90 | |||
2010 | 23.93 | c | 24.20 | 33.16 | c | 38.45 | a | 44.04 | c | 58.04 | e | 65.95 | b | 62.92 | 57.26 | a | 46.50 | 29.27 | 24.90 | 42.38 | ||||||
2011 | 24.48 | 20.96 | 30.65 | a | 36.90 | a | 44.22 | a | 55.81 | a | 64.42 | g | 65.05 | 56.53 | 45.92 | 26.93 | 21.69 | 39.01 | a | |||||||
2012 | 27.89 | 23.38 | 37.44 | 45.52 | 50.55 | 60.38 | 66.26 | b | 65.94 | 57.05 | b | 44.06 | 35.78 | a | 24.78 | m | 46.75 | a | ||||||||
2013 | 20.18 | a | 23.93 | a | 33.02 | d | 38.57 | 50.35 | 61.45 | 67.34 | 64.37 | a | 56.23 | 42.71 | 32.63 | 22.16 | 42.75 | |||||||||
2014 | 29.13 | 27.73 | 36.08 | 41.48 | 50.95 | 56.58 | 65.50 | 60.59 | c | 57.17 | 48.83 | p | ----- | z | ----- | z | 47.25 | c | ||||||||
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.24 | j | 33.33 | 17.90 | j | 33.33 | k | |
2017 | 19.04 | r | ----- | z | ----- | z | 39.08 | 47.86 | b | 59.38 | ----- | z | 63.17 | k | 53.60 | 41.35 | a | 33.57 | a | 30.61 | 43.64 | e | ||||
2018 | 26.45 | ----- | z | 35.95 | t | 40.57 | g | 54.31 | r | 60.62 | e | 66.03 | 63.08 | 56.79 | b | 42.00 | d | 31.08 | 17.19 | e | 45.41 | d | ||||
2019 | 20.38 | c | 18.70 | a | 21.16 | f | 41.94 | d | 45.13 | a | 55.17 | 64.06 | 62.19 | 54.43 | 37.12 | c | 32.67 | i | 15.63 | 41.48 | b | |||||
2020 | 20.98 | c | 20.44 | c | 32.03 | 40.18 | 48.75 | a | 56.27 | 62.68 | 65.05 | 52.70 | b | 45.42 | a | 31.57 | a | 23.22 | b | 41.61 | ||||||
2021 | 22.57 | d | 23.36 | 28.88 | a | 37.72 | 49.21 | b | 62.70 | 67.08 | 62.26 | 56.52 | a | 42.34 | 36.43 | 26.00 | 42.92 | |||||||||
2022 | 23.26 | 21.46 | 32.65 | 37.14 | b | 46.60 | 56.33 | a | 67.29 | 64.28 | a | 57.67 | a | 43.72 | a | 25.76 | a | 17.73 | 41.16 | |||||||
2023 | 14.34 | 14.06 | b | 18.08 | 31.80 | 50.18 | c | 54.02 | 64.97 | b | 60.65 | g | 53.75 | 44.33 | e | 32.67 | a | 27.08 | 36.84 | a | ||||||
2024 | 24.63 | 24.76 | 30.35 | 39.47 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.58 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.33 | 23.62 | 31.77 | 39.66 | 48.93 | 57.56 | 64.60 | 62.93 | 54.59 | 43.45 | 30.84 | 22.46 | 41.84 | |||||||||||||
S.D. | 4.64 | 4.46 | 4.21 | 3.74 | 2.51 | 2.78 | 2.13 | 2.15 | 2.57 | 2.99 | 3.81 | 4.44 | 1.67 | |||||||||||||
SKEW | -0.59 | -0.62 | -0.88 | -0.26 | -0.14 | 0.17 | -0.04 | -0.45 | -0.42 | -0.63 | -0.24 | -0.03 | -0.50 | |||||||||||||
MAX | 32.50 | 31.68 | 38.89 | 47.38 | 53.90 | 63.53 | 69.50 | 66.48 | 58.97 | 49.34 | 38.25 | 32.45 | 44.22 | |||||||||||||
MIN | 10.03 | 11.75 | 18.08 | 31.80 | 44.04 | 52.34 | 58.79 | 57.45 | 48.39 | 35.53 | 22.32 | 13.81 | 37.98 | |||||||||||||
YRS | 53 | 51 | 51 | 52 | 55 | 56 | 53 | 53 | 55 | 53 | 54 | 54 | 40 |