YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.83 | p | ----- | z |
1957 | 20.50 | j | 36.68 | i | 44.02 | k | 57.12 | i | 69.52 | j | 73.05 | i | 75.83 | h | 75.00 | i | 71.33 | l | 52.67 | e | 41.45 | k | 38.47 | l | 52.67 | k |
1958 | 37.52 | j | 45.42 | h | 45.53 | o | 52.21 | i | 71.19 | j | 76.60 | j | 82.78 | k | 81.62 | j | 65.26 | k | 54.41 | h | 41.50 | n | 33.62 | k | ----- | z |
1959 | 31.25 | k | 33.42 | i | 45.88 | e | 55.27 | h | 60.25 | m | 70.50 | k | 79.41 | h | 73.15 | k | 63.76 | k | 54.86 | i | 40.42 | l | 36.98 | k | 45.88 | k |
1960 | 25.17 | m | 39.45 | a | 47.15 | 54.72 | 60.89 | 72.63 | 83.50 | 75.18 | 70.28 | 56.66 | 42.93 | 31.34 | 57.70 | a | ||||||||||
1961 | 36.16 | 44.86 | 46.74 | 55.87 | 61.85 | a | 76.25 | 82.05 | 83.11 | 67.18 | b | 54.53 | 38.09 | b | 35.82 | 56.88 | ||||||||||
1962 | 32.68 | a | 38.57 | 44.65 | 58.28 | a | 60.84 | 71.28 | ----- | z | 75.89 | 69.60 | 55.03 | 46.12 | 39.56 | 53.86 | a | |||||||||
1963 | 28.53 | 39.93 | 48.26 | 51.77 | 63.74 | 69.03 | 74.53 | 77.68 | 73.15 | 59.16 | 46.30 | 33.60 | 55.47 | |||||||||||||
1964 | 37.73 | 40.26 | 45.79 | 52.62 | a | 62.10 | 68.95 | 76.69 | 72.92 | 66.48 | 56.31 | 41.10 | 29.13 | 54.17 | ||||||||||||
1965 | 34.55 | 41.91 | 45.44 | 57.25 | 63.73 | 71.05 | 78.34 | 76.94 | 66.40 | 59.35 | 46.30 | 35.24 | 56.37 | |||||||||||||
1966 | 34.78 | a | 41.05 | 46.61 | 56.58 | 64.34 | 67.93 | 75.68 | a | 78.39 | 71.82 | 54.53 | 45.77 | 40.47 | 56.50 | |||||||||||
1967 | 40.82 | 44.95 | 45.44 | 50.40 | 61.94 | 72.22 | 77.77 | 83.39 | 73.55 | 55.98 | 44.72 | a | 34.18 | 57.11 | ||||||||||||
1968 | 37.85 | 42.36 | 49.89 | 52.27 | 63.53 | 71.04 | b | 80.35 | 73.03 | 69.52 | 53.02 | 44.45 | a | 34.30 | a | 55.97 | ||||||||||
1969 | 22.48 | 32.73 | 46.84 | 54.42 | 66.57 | a | 75.22 | 77.95 | 75.31 | 69.72 | 53.18 | 42.57 | 36.79 | 54.48 | ||||||||||||
1970 | 33.63 | 41.70 | 46.94 | 51.05 | 64.03 | 73.65 | 79.89 | 78.85 | 64.68 | b | 54.63 | 42.80 | 32.00 | b | 55.32 | |||||||||||
1971 | 37.13 | d | 41.23 | b | 41.54 | c | 52.95 | 65.50 | g | 67.06 | c | 78.03 | 82.73 | a | 63.38 | 53.63 | e | 43.42 | d | 32.34 | i | 56.11 | b | |||
1972 | 30.06 | d | 34.76 | d | 47.37 | a | 50.12 | 65.66 | 70.58 | 77.19 | 78.61 | ----- | z | ----- | z | 42.50 | 30.29 | 52.71 | b | |||||||
1973 | 31.50 | 39.38 | 49.87 | 56.84 | b | 65.02 | 69.88 | 80.48 | 77.03 | 68.00 | 55.06 | 40.68 | 40.89 | 56.22 | ||||||||||||
1974 | 31.69 | 42.48 | 46.74 | 53.80 | 60.61 | 74.17 | 76.06 | 79.18 | 71.15 | 55.68 | 45.00 | 38.87 | 56.29 | |||||||||||||
1975 | 34.48 | 35.82 | 43.73 | 50.02 | 63.66 | c | 69.22 | 81.32 | 73.88 | a | 71.48 | 55.76 | 42.13 | 37.06 | 54.88 | |||||||||||
1976 | 33.98 | 39.66 | 43.45 | 52.70 | 62.84 | 67.15 | 76.19 | 73.21 | 71.68 | 53.44 | o | 43.02 | a | 34.10 | 54.36 | a | ||||||||||
1977 | 27.48 | 41.93 | 46.43 | h | 60.23 | 60.60 | 74.97 | 76.16 | 80.95 | 64.70 | 55.58 | 41.27 | 36.52 | 56.40 | a | |||||||||||
1978 | 34.56 | 39.27 | 48.92 | 53.42 | 60.98 | 72.67 | 78.08 | 74.82 | 65.67 | 54.57 | i | ----- | z | 30.48 | 55.89 | b | ||||||||||
1979 | 17.79 | 35.36 | 47.68 | 54.18 | 65.30 | c | 72.73 | d | 79.24 | 77.26 | 71.23 | 58.37 | a | 37.45 | 39.45 | 54.67 | ||||||||||
1980 | 27.15 | 35.90 | 45.82 | 57.25 | 62.95 | c | 66.75 | d | 77.35 | 71.84 | 67.37 | 54.58 | 42.85 | c | 37.52 | 53.94 | ||||||||||
1981 | 39.79 | 40.27 | 49.88 | a | 54.26 | a | 62.53 | 66.18 | 74.89 | 80.31 | 67.57 | 52.68 | 44.21 | a | 35.27 | 55.65 | ||||||||||
1982 | 31.76 | b | 38.73 | 47.10 | a | 49.98 | a | 62.11 | 73.28 | 75.65 | 77.10 | 66.95 | b | 53.15 | 38.93 | ----- | z | 55.89 | a | |||||||
1983 | 41.68 | f | 42.11 | 50.05 | 54.14 | a | 66.65 | 68.82 | 74.18 | a | 77.61 | 64.69 | a | 55.29 | 46.42 | 25.60 | a | 56.87 | a | |||||||
1984 | 34.31 | 39.71 | 49.11 | 53.03 | 59.08 | 67.62 | a | 78.02 | 77.13 | a | 64.60 | 50.97 | 40.98 | 26.79 | 53.45 | |||||||||||
1985 | 26.67 | a | 30.52 | 45.13 | a | 56.02 | 64.13 | 70.60 | 82.66 | 74.32 | 61.47 | 52.85 | a | 28.12 | b | 22.29 | b | 51.23 | ||||||||
1986 | 34.89 | 39.93 | 50.19 | 54.10 | 64.45 | 75.38 | 73.65 | 81.74 | 65.02 | 57.18 | 44.70 | 33.80 | a | 56.25 | ||||||||||||
1987 | 32.42 | 41.94 | a | 48.89 | 59.07 | 66.80 | a | 73.57 | b | 75.61 | 76.68 | a | ----- | z | 56.93 | a | ----- | z | 32.55 | a | 56.45 | b | ||||
1988 | 33.08 | 41.31 | 47.79 | 56.83 | 62.53 | 69.33 | 77.98 | 75.62 | a | 65.85 | 59.11 | 44.27 | 32.22 | a | 55.49 | |||||||||||
1989 | 36.45 | 28.04 | 44.28 | a | 56.95 | 60.55 | 72.84 | a | 75.77 | 74.33 | a | 67.10 | 53.42 | 42.18 | 32.76 | 53.72 | ||||||||||
1990 | 39.60 | a | 36.46 | 49.97 | 58.82 | 60.84 | 69.82 | 80.92 | 77.65 | 73.92 | ----- | z | 47.34 | a | 27.28 | b | 56.60 | a | ||||||||
1991 | 30.75 | a | 44.78 | a | 45.62 | b | 55.28 | 59.91 | b | 64.41 | b | 78.02 | a | 79.84 | 70.92 | 54.95 | 42.62 | 38.89 | 55.50 | |||||||
1992 | 38.68 | a | 42.79 | 52.34 | 56.63 | 68.41 | b | 77.17 | 77.90 | b | 77.35 | 65.47 | a | 55.34 | b | 41.48 | a | 30.74 | 57.03 | |||||||
1993 | 26.22 | a | 31.54 | a | 42.68 | 52.93 | 66.13 | 68.43 | 70.66 | 73.62 | a | 66.64 | a | 56.20 | a | 35.40 | 36.07 | b | 52.21 | |||||||
1994 | 38.15 | 34.93 | a | 48.65 | 57.48 | 65.53 | b | 70.35 | 81.18 | a | 77.76 | 70.83 | a | 55.15 | a | 40.17 | a | 36.22 | b | 56.37 | ||||||
1995 | 35.19 | 42.87 | a | 46.33 | a | 52.33 | 63.47 | b | 67.58 | 75.93 | a | 72.34 | 69.74 | a | 53.27 | 43.08 | 33.60 | 54.65 | ||||||||
1996 | 28.55 | a | 34.30 | a | 43.13 | 54.20 | 59.07 | d | 69.30 | b | 78.13 | 74.37 | a | 64.52 | 52.74 | 40.36 | a | 32.33 | h | 54.43 | a | |||||
1997 | 33.29 | c | 39.27 | ----- | z | 53.33 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.39 | d | 40.57 | h | |
1998 | 35.35 | h | 43.18 | c | 49.77 | 56.62 | b | 64.14 | b | 72.52 | a | 83.11 | 81.24 | b | 72.90 | a | ----- | z | 47.80 | c | 35.18 | a | 60.65 | b | ||
1999 | 39.72 | a | 42.58 | b | 47.53 | a | 55.04 | b | 61.00 | a | 69.57 | 76.20 | a | 77.77 | a | 67.93 | a | 54.03 | 48.04 | b | 39.80 | a | 56.60 | |||
2000 | 35.33 | b | 40.78 | b | 46.45 | a | 57.00 | e | 63.10 | f | 71.62 | a | 77.42 | 77.65 | 64.83 | d | 53.88 | j | 37.41 | a | 32.07 | a | 54.05 | b | ||
2001 | 35.53 | b | 36.81 | b | 48.86 | c | 53.75 | b | 65.88 | a | 68.36 | b | 78.89 | d | 79.60 | 71.48 | 54.00 | d | 46.14 | b | 37.63 | a | 56.41 | |||
2002 | 38.75 | c | 39.06 | c | 43.82 | 54.95 | a | 61.73 | a | 71.00 | a | 78.73 | 76.00 | b | 68.77 | d | 53.66 | c | 42.69 | a | 39.43 | a | 55.72 | |||
2003 | 39.20 | a | 41.81 | b | 49.90 | 54.95 | k | 61.42 | 75.55 | i | 81.46 | e | 78.37 | 71.35 | 59.95 | 40.62 | 36.05 | 56.01 | b | |||||||
2004 | 33.72 | d | 38.33 | 51.30 | a | 57.62 | b | 62.90 | 72.58 | 80.94 | 79.35 | 68.23 | 56.88 | a | 42.40 | a | 38.95 | 56.93 | ||||||||
2005 | 32.52 | a | 39.64 | 50.35 | 55.68 | b | 65.18 | 69.66 | a | 78.37 | a | 81.23 | t | 68.00 | a | 56.61 | 41.27 | b | 30.97 | a | 53.48 | a | ||||
2006 | 40.02 | b | 38.33 | a | 46.77 | 54.30 | 63.74 | 72.26 | a | 81.77 | 77.92 | a | 68.55 | 55.65 | a | 42.80 | 32.42 | 56.21 | ||||||||
2007 | 32.75 | a | 39.02 | a | 49.20 | d | 54.20 | 65.34 | 70.35 | 81.53 | 76.30 | a | 68.85 | d | 54.28 | a | 42.45 | 35.82 | a | 55.84 | ||||||
2008 | 29.60 | 41.54 | b | 44.98 | 51.02 | a | 64.73 | a | 69.48 | 78.81 | b | 76.08 | 68.72 | a | 55.00 | f | 44.92 | 28.50 | 54.40 | a | ||||||
2009 | 33.68 | 36.24 | c | 42.89 | 53.98 | 64.15 | a | 72.39 | c | 81.16 | 78.35 | 70.98 | 52.87 | 44.55 | 28.40 | a | 54.97 | |||||||||
2010 | 40.26 | 43.61 | 48.82 | 54.47 | 59.95 | 68.43 | 78.27 | 75.68 | 67.65 | 56.98 | 40.78 | 36.82 | 55.98 | |||||||||||||
2011 | 35.55 | 37.12 | 45.95 | 51.13 | 59.72 | a | 67.65 | 74.66 | 78.98 | 71.63 | 55.90 | 41.45 | 33.73 | 54.46 | ||||||||||||
2012 | 34.57 | a | 39.13 | b | 46.84 | 56.27 | 61.61 | 66.95 | 78.52 | 79.48 | 70.02 | b | 55.21 | 44.65 | 39.48 | 56.06 | ||||||||||
2013 | 32.62 | a | 41.75 | 48.24 | 55.07 | 65.20 | h | 71.00 | b | 82.00 | 79.41 | c | 71.31 | d | 54.95 | 42.57 | 30.67 | g | 57.89 | b | ||||||
2014 | 37.39 | 35.57 | 47.98 | a | 55.62 | b | 65.80 | c | 71.58 | 82.97 | 80.12 | b | 70.92 | 61.08 | a | 42.25 | 40.33 | a | 57.64 | |||||||
2015 | 36.82 | a | 46.39 | 52.68 | 56.27 | 68.40 | a | 78.79 | f | 82.67 | g | 79.59 | b | 67.50 | 61.90 | 44.11 | b | 37.52 | b | 55.12 | b | |||||
2016 | 36.84 | 44.64 | a | 50.22 | a | 61.55 | 66.81 | g | 72.50 | e | 76.65 | d | 79.05 | b | 67.54 | e | 56.98 | a | 48.89 | h | 32.09 | d | 57.81 | b | ||
2017 | 25.95 | 34.00 | g | 47.08 | f | 53.09 | b | 65.00 | d | 71.04 | f | 81.86 | b | 80.55 | b | 69.16 | b | 55.52 | 45.55 | b | 33.85 | 56.73 | c | |||
2018 | 40.24 | d | 40.87 | e | 47.10 | f | 53.57 | b | 68.38 | a | 72.68 | h | 81.35 | a | 78.92 | e | 68.02 | 55.61 | c | 44.11 | c | 40.19 | d | 57.13 | b | |
2019 | 36.96 | h | 28.61 | a | 40.95 | c | 56.21 | a | 66.33 | b | 72.37 | 77.45 | c | 80.00 | 67.34 | a | 51.67 | a | 42.00 | 37.22 | b | 56.38 | a | |||
2020 | 40.77 | a | 43.91 | b | 47.74 | 57.10 | a | 64.00 | a | 71.03 | a | 78.37 | d | 79.57 | b | 69.45 | b | 57.35 | 44.93 | 38.09 | b | 57.69 | ||||
2021 | 40.27 | g | 36.72 | e | 48.35 | h | 58.16 | e | 64.80 | i | 78.98 | f | 85.35 | d | 78.88 | b | 69.38 | e | 56.19 | m | 52.86 | w | ----- | z | 65.70 | g |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.87 | d | 73.61 | k | 68.12 | r | 37.80 | 28.47 | 49.38 | i | ||
2023 | 36.67 | b | 38.91 | 43.79 | e | 53.96 | f | 68.04 | c | 74.02 | b | 81.84 | b | 79.84 | 70.23 | 58.06 | 43.14 | a | 40.98 | a | 57.78 | a | ||||
2024 | 33.41 | c | 43.76 | 50.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.39 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.01 | 39.39 | 47.18 | 54.83 | 63.52 | 70.78 | 78.60 | 77.72 | 68.55 | 55.49 | 42.61 | 34.61 | 55.52 | |||||||||||||
S.D. | 4.71 | 3.91 | 2.62 | 2.54 | 2.45 | 2.70 | 2.85 | 2.70 | 2.73 | 2.29 | 3.27 | 4.24 | 1.40 | |||||||||||||
SKEW | -0.97 | -0.87 | -0.24 | 0.13 | 0.14 | 0.10 | -0.05 | -0.16 | -0.21 | 0.64 | -1.60 | -0.60 | -1.04 | |||||||||||||
MAX | 40.82 | 46.39 | 52.68 | 61.55 | 68.41 | 77.17 | 85.35 | 83.39 | 73.92 | 61.90 | 48.04 | 40.98 | 57.69 | |||||||||||||
MIN | 17.79 | 28.04 | 40.95 | 49.98 | 59.07 | 64.41 | 70.66 | 71.84 | 61.47 | 50.97 | 28.13 | 22.29 | 51.23 | |||||||||||||
YRS | 59 | 63 | 60 | 61 | 57 | 57 | 60 | 62 | 60 | 55 | 59 | 59 | 37 |