YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.25 | t | 48.33 | a | 34.25 | 30.55 | 37.71 | i | ||
1961 | 33.87 | 33.46 | 34.26 | 41.00 | 45.77 | 60.25 | 62.61 | 64.00 | 51.25 | 46.71 | b | 34.58 | 28.39 | 44.68 | ||||||||||||
1962 | 25.23 | 30.71 | 31.95 | 43.27 | 43.76 | 54.30 | 60.29 | 58.85 | 56.95 | ----- | z | 38.03 | 34.37 | 43.43 | a | |||||||||||
1963 | 27.79 | 38.96 | 34.73 | 35.32 | 48.58 | 52.43 | 56.34 | 58.81 | 58.75 | 46.53 | 35.92 | 32.44 | 43.88 | |||||||||||||
1964 | 27.26 | 29.22 | 31.15 | 37.98 | a | 44.71 | 51.27 | 60.56 | 58.74 | 51.82 | 50.13 | 33.12 | 30.00 | 42.16 | ||||||||||||
1965 | 30.17 | a | 32.04 | 36.81 | 41.03 | 44.29 | 53.13 | 60.53 | 59.06 | 51.72 | 50.29 | 37.40 | 27.98 | 43.70 | ||||||||||||
1966 | 27.34 | 28.18 | 33.90 | 43.28 | 50.71 | 52.75 | 57.66 | 62.32 | 55.95 | 46.76 | 37.22 | 30.74 | 43.90 | |||||||||||||
1967 | 29.71 | 33.70 | 32.71 | 33.00 | 47.69 | 55.47 | 63.68 | 65.97 | 60.37 | 46.26 | 39.78 | 24.19 | 44.38 | |||||||||||||
1968 | 27.39 | 36.29 | a | 37.85 | 39.18 | 45.44 | 55.22 | 63.92 | 57.05 | 55.83 | 45.45 | 34.63 | 24.63 | 43.57 | ||||||||||||
1969 | 23.39 | 27.52 | 31.44 | 38.22 | 51.00 | 55.78 | 61.06 | 59.15 | 56.38 | 41.95 | 38.87 | 32.47 | 43.10 | |||||||||||||
1970 | 30.65 | 35.68 | 36.08 | 35.63 | 47.58 | 57.87 | 63.02 | 61.76 | 50.73 | 43.94 | 36.88 | 25.34 | 43.76 | |||||||||||||
1971 | 26.53 | 29.55 | 31.26 | 36.42 | 44.60 | 51.17 | 63.11 | 64.42 | 52.33 | 42.10 | 34.60 | 24.73 | 41.73 | |||||||||||||
1972 | 24.47 | 32.16 | 38.94 | 37.83 | 49.61 | 56.63 | 63.44 | 61.79 | 51.35 | 46.07 | a | 34.38 | 24.24 | 43.41 | ||||||||||||
1973 | 26.85 | 34.02 | 33.16 | 40.70 | 51.47 | 55.73 | 62.21 | 60.50 | 54.53 | 44.66 | 33.48 | 32.16 | 44.12 | |||||||||||||
1974 | 24.63 | 29.38 | 34.23 | 37.57 | 45.94 | 58.20 | 59.44 | 60.82 | 58.87 | 45.95 | 35.78 | 28.44 | 43.27 | |||||||||||||
1975 | 25.19 | 26.95 | 30.19 | 31.43 | 44.48 | 51.48 | 59.31 | 55.98 | 57.25 | 42.89 | 32.58 | 31.71 | 40.79 | |||||||||||||
1976 | 29.89 | 30.59 | 31.85 | 36.87 | 48.23 | 51.12 | 60.40 | 55.81 | 55.90 | 48.87 | 40.48 | 31.85 | 43.49 | |||||||||||||
1977 | 27.21 | 36.70 | 32.29 | 43.03 | 41.40 | 58.53 | a | 59.77 | 63.45 | 53.02 | 46.31 | 33.58 | 30.68 | 43.83 | ||||||||||||
1978 | 33.24 | 34.57 | 40.89 | 39.12 | 45.27 | 54.55 | 61.89 | 60.08 | 50.87 | 50.40 | 32.33 | 23.31 | 43.88 | |||||||||||||
1979 | 24.77 | 30.57 | 37.69 | 40.30 | 49.74 | 55.35 | 61.55 | 59.10 | 58.25 | 49.53 | 34.15 | 32.06 | 44.42 | |||||||||||||
1980 | 29.40 | 36.36 | 34.60 | 41.77 | 46.29 | ----- | z | 62.06 | 58.68 | 55.48 | 48.94 | 37.72 | 32.69 | 44.00 | a | |||||||||||
1981 | 34.81 | 33.07 | 36.82 | 42.27 | 47.19 | 54.98 | 60.58 | 64.39 | 56.80 | 43.77 | 37.63 | 32.79 | 45.43 | |||||||||||||
1982 | 25.18 | 29.29 | 33.06 | 36.78 | 47.82 | 55.23 | 60.00 | 61.00 | 52.28 | a | 44.12 | b | 32.13 | 27.24 | 42.01 | |||||||||||
1983 | 31.07 | a | 32.02 | 35.53 | 36.93 | a | 48.69 | 51.67 | 55.85 | 61.45 | 53.31 | a | 47.60 | 32.79 | a | 28.64 | c | 42.96 | ||||||||
1984 | 29.28 | b | 30.43 | b | 37.48 | b | 37.70 | 46.71 | 52.50 | b | 63.10 | 61.47 | 53.50 | 39.88 | b | 31.46 | b | 23.76 | b | 42.27 | ||||||
1985 | 28.40 | e | 27.98 | a | 31.30 | c | 43.50 | b | 47.28 | a | 56.52 | 65.02 | 58.24 | 49.87 | 44.10 | a | 27.67 | 29.12 | a | 42.42 | ||||||
1986 | 34.00 | b | 34.61 | a | 41.13 | a | 41.93 | a | 48.28 | b | 59.39 | c | 58.00 | c | 65.72 | a | 49.63 | 47.02 | 36.92 | 30.02 | a | 45.55 | ||||
1987 | 26.03 | b | 31.96 | 35.34 | 46.77 | 51.05 | 58.30 | 57.76 | 61.45 | a | 58.05 | 53.29 | 36.66 | a | 27.15 | 45.32 | ||||||||||
1988 | 26.96 | f | 34.38 | 36.94 | 43.63 | 46.30 | a | 55.04 | e | 65.41 | c | 62.57 | b | 56.35 | 53.68 | 33.57 | a | 28.74 | b | 46.96 | a | |||||
1989 | 25.21 | 24.50 | 34.33 | b | 45.21 | a | 46.35 | 57.04 | c | 60.10 | f | 58.23 | a | 54.05 | a | 45.13 | 37.02 | 32.62 | c | 41.79 | a | |||||
1990 | 29.40 | b | 28.22 | a | 37.87 | a | 47.45 | a | 46.16 | 55.00 | d | 64.22 | a | 62.52 | a | 58.90 | d | 45.30 | c | 33.47 | 21.48 | b | 44.17 | |||
1991 | 29.55 | a | 38.62 | b | 32.97 | 38.67 | 43.74 | b | 51.19 | d | 63.88 | c | 62.72 | b | 61.35 | f | 49.53 | a | 36.70 | c | 29.87 | d | 43.40 | a | ||
1992 | 30.77 | c | 37.46 | a | 41.14 | c | 46.38 | a | 55.55 | a | 58.90 | d | 61.79 | c | 63.90 | e | 56.22 | e | 48.88 | c | 33.96 | b | 25.90 | j | 48.63 | a |
1993 | 25.08 | 26.87 | b | 38.79 | 39.28 | 49.88 | a | 52.20 | c | 56.77 | c | 61.11 | c | 57.20 | b | 48.41 | c | 31.83 | c | 28.29 | c | 42.98 | ||||
1994 | 31.22 | b | 29.81 | b | 39.95 | b | 43.98 | e | 51.11 | c | 55.13 | c | 66.38 | c | 61.71 | b | 57.74 | c | 44.65 | a | 25.80 | c | 27.20 | d | 44.56 | |
1995 | 31.46 | c | 37.95 | 34.87 | a | 39.28 | a | 48.55 | a | 53.29 | a | 61.24 | b | 59.55 | c | 58.79 | b | 46.33 | d | 41.02 | b | 33.09 | d | 45.45 | ||
1996 | 31.30 | a | 33.26 | 37.08 | a | 43.06 | c | 46.71 | b | 55.74 | a | 66.38 | a | 64.40 | b | 53.66 | b | 45.35 | a | 36.48 | a | 30.00 | 45.28 | |||
1997 | 29.37 | a | 32.21 | b | 39.48 | e | 41.10 | a | 53.67 | a | 53.93 | 61.44 | d | 63.64 | b | 56.64 | b | 45.46 | c | 37.53 | a | 27.40 | a | 45.16 | ||
1998 | 32.63 | a | 31.59 | 36.05 | 41.34 | b | 42.68 | 54.73 | b | 66.14 | b | 65.27 | c | 59.83 | c | 45.28 | b | 34.05 | b | 25.97 | b | 44.63 | ||||
1999 | 29.56 | 28.13 | b | 32.92 | 38.25 | b | 47.07 | c | 54.16 | a | 61.60 | 61.73 | c | 58.05 | 50.77 | c | 39.55 | 30.98 | a | 44.40 | ||||||
2000 | 30.29 | 34.55 | a | 35.23 | a | 44.68 | 48.89 | 58.95 | a | 61.63 | d | 63.71 | c | 55.86 | b | 44.80 | c | 32.05 | a | 32.42 | a | 45.26 | ||||
2001 | 29.40 | b | 29.60 | b | 38.18 | 38.75 | 54.95 | a | 54.94 | c | 62.68 | c | 65.05 | 58.45 | a | 48.92 | 36.63 | 29.68 | c | 45.60 | ||||||
2002 | 27.73 | c | 33.14 | 34.17 | a | 43.18 | 47.63 | 57.92 | 67.46 | d | 61.84 | 58.81 | f | 45.80 | c | 37.85 | 32.21 | b | 44.45 | a | ||||||
2003 | 35.13 | 32.39 | 38.02 | b | 38.10 | 48.70 | a | 58.62 | i | 67.80 | c | 64.07 | b | 59.28 | a | 50.59 | c | 32.35 | 31.47 | 45.26 | a | |||||
2004 | 30.66 | 31.33 | 40.43 | c | 43.68 | b | 48.69 | b | 57.23 | b | 64.78 | f | 62.98 | k | 54.33 | 44.62 | b | 36.12 | 32.37 | 41.95 | b | |||||
2005 | 29.88 | c | 34.41 | 38.62 | a | 40.40 | 52.94 | w | 52.13 | 65.42 | e | 64.95 | b | 55.62 | e | 47.58 | e | 36.63 | c | 30.92 | a | 45.14 | a | |||
2006 | 30.59 | c | 30.67 | e | 30.02 | b | 38.83 | d | 51.31 | e | 56.54 | d | 66.26 | d | 61.06 | e | 55.39 | g | 45.17 | k | 35.72 | g | 28.75 | i | 45.66 | d |
2007 | 27.22 | f | 33.72 | e | 39.07 | h | 38.00 | m | 49.53 | l | 55.97 | l | 66.26 | l | 62.24 | l | 55.29 | k | 41.86 | m | 35.56 | l | 26.80 | i | 33.72 | k |
2008 | 26.90 | j | 31.56 | l | 33.42 | f | 36.68 | 48.50 | 53.55 | 64.92 | 63.16 | 57.98 | 46.92 | 38.88 | 28.94 | 48.84 | c | |||||||||
2009 | 31.60 | 32.79 | 32.56 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.19 | j | ||
2010 | ----- | z | 33.34 | i | 35.39 | 35.81 | a | 41.34 | 51.83 | 62.69 | 60.31 | 54.60 | 47.89 | 33.78 | a | 30.33 | a | 45.40 | b | |||||||
2011 | 29.56 | 28.91 | 33.06 | 34.87 | 41.24 | 50.45 | 58.31 | 62.23 | 59.12 | 44.76 | 33.35 | 31.21 | 42.26 | |||||||||||||
2012 | 30.50 | 30.38 | 31.10 | 40.62 | a | 46.94 | 50.83 | 60.45 | 64.02 | 59.27 | 46.68 | 37.08 | 27.61 | 43.79 | ||||||||||||
2013 | 25.42 | 29.54 | 35.58 | 40.52 | 47.92 | 54.75 | 66.11 | 61.40 | 54.43 | 42.23 | 37.42 | 27.52 | 43.57 | |||||||||||||
2014 | 34.44 | 33.45 | 38.13 | 41.38 | 49.18 | 53.70 | 66.63 | 63.55 | 58.10 | 48.18 | 37.77 | 34.26 | 46.56 | |||||||||||||
2015 | 35.30 | a | 38.35 | a | 41.45 | 40.68 | 48.84 | 60.93 | b | 62.87 | d | 62.58 | 54.62 | 50.60 | 32.63 | 28.45 | 46.44 | |||||||||
2016 | 28.90 | 34.55 | 35.98 | 45.10 | 48.53 | 56.58 | 60.44 | 63.44 | 53.37 | 42.56 | 38.57 | 25.26 | 44.44 | |||||||||||||
2017 | 23.81 | 31.77 | 36.02 | 38.58 | 48.88 | a | 56.08 | 65.27 | 65.82 | 56.13 | 43.55 | 35.32 | 31.08 | a | 44.36 | |||||||||||
2018 | 34.23 | 30.25 | 32.71 | 40.80 | 50.65 | 54.47 | a | 65.10 | a | 62.77 | 54.27 | 45.19 | 37.53 | a | 29.29 | 44.77 | ||||||||||
2019 | 32.19 | 25.88 | 32.19 | 42.23 | 47.48 | 55.50 | 60.97 | 63.05 | 53.35 | 40.71 | 37.58 | 30.74 | 43.49 | |||||||||||||
2020 | 30.81 | 32.52 | 34.37 | 42.57 | 48.48 | 54.27 | 62.11 | 64.37 | 59.88 | 48.27 | 33.92 | 30.16 | 45.14 | |||||||||||||
2021 | 30.69 | 29.21 | 33.18 | 42.33 | 47.79 | 59.93 | 66.81 | 63.10 | 55.30 | 42.26 | b | 37.52 | 29.40 | 44.79 | ||||||||||||
2022 | 32.15 | 31.46 | 37.90 | 36.05 | 43.03 | a | 53.77 | 65.65 | 65.85 | 58.57 | 49.74 | 30.78 | 27.39 | 44.36 | ||||||||||||
2023 | 28.62 | a | 28.50 | 26.98 | 37.15 | 50.60 | 55.23 | 65.56 | 63.95 | 53.05 | 46.16 | 37.18 | 34.81 | 43.98 | ||||||||||||
2024 | 33.34 | 33.69 | 34.30 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.78 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.41 | 31.94 | 35.28 | 40.15 | 47.68 | 55.01 | 62.43 | 61.96 | 55.59 | 46.48 | 35.36 | 29.38 | 44.03 | |||||||||||||
S.D. | 3.10 | 3.26 | 3.18 | 3.37 | 3.00 | 2.59 | 2.95 | 2.48 | 2.82 | 2.93 | 2.92 | 3.00 | 1.21 | |||||||||||||
SKEW | -0.04 | 0.17 | 0.00 | -0.10 | 0.08 | 0.25 | -0.20 | -0.50 | -0.28 | 0.14 | -0.68 | -0.52 | -0.33 | |||||||||||||
MAX | 35.30 | 38.96 | 41.45 | 47.45 | 55.55 | 60.93 | 67.80 | 65.97 | 60.37 | 53.68 | 41.02 | 34.81 | 46.56 | |||||||||||||
MIN | 23.39 | 24.50 | 26.98 | 31.43 | 41.24 | 50.45 | 55.85 | 55.81 | 49.63 | 39.88 | 25.80 | 21.48 | 40.79 | |||||||||||||
YRS | 60 | 62 | 61 | 61 | 60 | 59 | 59 | 60 | 58 | 60 | 61 | 60 | 48 |