YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | 42.88 | r | 51.58 | 66.97 | 69.45 | 69.77 | 53.52 | 47.26 | 35.05 | 31.61 | 53.15 | d | ||||||||
1962 | 25.95 | 32.86 | 36.90 | 48.75 | 49.08 | 59.48 | 65.98 | 63.87 | 60.02 | 48.13 | 41.00 | 36.98 | 47.42 | |||||||||||||
1963 | 27.15 | 43.16 | 38.45 | 40.73 | 54.29 | 58.15 | 63.35 | 64.35 | 63.33 | 50.87 | 40.05 | 33.40 | 48.11 | |||||||||||||
1964 | 30.52 | 32.93 | 35.18 | 41.80 | 48.58 | 57.75 | 67.68 | 64.23 | 54.70 | 50.85 | 36.18 | 31.98 | a | 46.03 | ||||||||||||
1965 | 34.05 | 36.71 | 37.11 | 46.65 | 49.47 | 58.68 | 66.56 | 64.19 | 52.88 | 51.45 | 41.00 | 30.34 | 47.43 | |||||||||||||
1966 | 31.40 | 31.71 | 39.37 | 45.33 | 55.31 | 58.05 | 64.53 | 65.74 | 59.66 | a | 48.47 | 40.67 | 34.82 | 47.92 | ||||||||||||
1967 | 35.97 | 38.29 | 36.56 | 37.20 | 52.53 | 60.48 | 70.39 | 69.89 | 60.73 | 48.08 | a | 39.90 | 26.93 | a | 48.08 | |||||||||||
1968 | 31.97 | 39.53 | 41.31 | 42.82 | 51.73 | 60.92 | 70.32 | 62.73 | 57.67 | 48.10 | 39.27 | 31.44 | 48.15 | |||||||||||||
1969 | 30.84 | 32.12 | 36.34 | 44.82 | 55.73 | 60.90 | 67.11 | 66.32 | 59.75 | 42.79 | 38.90 | 33.50 | 47.43 | |||||||||||||
1970 | 33.47 | 38.16 | 38.13 | a | 38.80 | b | 53.05 | 63.19 | a | 69.98 | a | 67.95 | 54.45 | a | 45.61 | 38.98 | 27.68 | 47.46 | ||||||||
1971 | 33.32 | 34.48 | 34.47 | 42.15 | c | 51.44 | 56.86 | a | 69.03 | 71.65 | 53.97 | 45.02 | 37.75 | 27.85 | 46.50 | |||||||||||
1972 | 28.08 | a | 36.34 | 44.10 | 42.55 | b | 54.42 | a | 62.98 | f | 67.85 | d | 66.65 | e | 51.38 | f | 45.86 | b | 37.04 | b | 24.33 | b | 44.72 | b | ||
1973 | 30.07 | b | 36.96 | 36.77 | 43.32 | 55.98 | 61.50 | 68.52 | 65.85 | 58.10 | 47.68 | 37.03 | 36.76 | 48.21 | ||||||||||||
1974 | 27.55 | 35.23 | 38.56 | 43.50 | 50.27 | 65.55 | 66.50 | 66.15 | 59.82 | 46.95 | a | 39.50 | 35.79 | l | 49.05 | a | ||||||||||
1975 | 32.33 | e | 34.14 | 36.37 | 37.80 | 50.76 | 58.00 | 69.39 | 62.56 | 59.90 | 48.07 | a | 36.53 | 36.15 | 46.83 | |||||||||||
1976 | 34.10 | 35.50 | 35.21 | 42.50 | 54.03 | 57.00 | 67.98 | 61.32 | 60.25 | 49.02 | a | 41.25 | 32.38 | c | 47.54 | |||||||||||
1977 | 27.25 | g | 38.15 | b | 34.85 | 49.43 | 48.48 | a | 65.10 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.20 | g | ||
1978 | ----- | z | ----- | z | 43.65 | d | 42.77 | 47.12 | k | 59.22 | 66.53 | 64.79 | 49.74 | k | 48.46 | g | 35.08 | f | 25.87 | 50.47 | f | |||||
1979 | 22.61 | 34.14 | 40.32 | i | 43.92 | 53.55 | 60.65 | 68.03 | a | 64.37 | 61.33 | a | 51.30 | a | 33.63 | 35.12 | a | 48.06 | a | |||||||
1980 | 29.58 | a | 39.16 | a | 36.33 | b | 46.20 | 51.18 | 55.62 | 68.03 | 63.10 | 56.86 | a | 42.32 | i | 39.13 | 33.98 | 47.20 | a | |||||||
1981 | 32.87 | a | 31.54 | 38.47 | 45.38 | b | 50.98 | 58.26 | a | 65.33 | a | 69.33 | a | 58.57 | 44.23 | 38.93 | a | 35.68 | a | 47.46 | ||||||
1982 | 27.65 | e | 34.04 | c | 37.05 | c | 37.92 | d | 49.65 | e | 59.25 | b | 64.48 | b | 66.34 | b | 54.02 | b | 45.48 | b | 32.04 | d | 29.98 | f | 46.18 | a |
1983 | 36.96 | f | 38.76 | e | 40.24 | d | 40.63 | c | 53.23 | a | 57.78 | 63.00 | a | 67.42 | a | 55.76 | a | 48.84 | f | 39.85 | g | 28.33 | d | 49.46 | c | |
1984 | 30.14 | f | 33.37 | f | 40.86 | b | 41.82 | b | 52.64 | b | 55.69 | c | 69.42 | a | 66.83 | d | 55.02 | f | 41.65 | g | 37.13 | d | 24.62 | c | 48.63 | d |
1985 | 22.97 | b | 28.34 | f | 35.34 | 48.58 | 51.78 | a | 61.40 | 71.74 | 64.29 | 51.25 | 44.45 | 28.46 | c | 26.34 | c | 46.06 | a | |||||||
1986 | 38.53 | a | 37.87 | a | 44.38 | b | 44.69 | a | 52.93 | a | 65.91 | a | 65.00 | a | 70.43 | b | 51.38 | 48.38 | a | 40.94 | c | 30.18 | f | 50.95 | a | |
1987 | 28.41 | i | 34.74 | e | 39.96 | g | 51.96 | g | 57.00 | e | 63.44 | d | 62.87 | d | 66.20 | f | 60.52 | c | 51.52 | d | 37.82 | h | 29.88 | f | 55.01 | f |
1988 | 28.43 | i | 37.22 | b | 38.17 | e | 46.87 | c | 50.33 | b | 60.84 | b | 69.67 | d | 66.12 | c | 56.71 | d | 54.67 | a | 39.10 | d | 28.06 | g | 51.97 | b |
1989 | 26.50 | h | 25.68 | f | 40.98 | g | 47.39 | c | 50.24 | 62.21 | a | 67.66 | b | 62.46 | c | 56.69 | a | 46.85 | e | 35.98 | d | 30.22 | f | 53.68 | d | |
1990 | 32.83 | a | 30.34 | 37.87 | a | 49.98 | b | 49.50 | a | 59.46 | b | 70.27 | 66.63 | a | 61.29 | a | 46.27 | 36.30 | c | 22.86 | b | 46.97 | ||||
1991 | 29.47 | 40.00 | 35.18 | a | 40.74 | a | 46.43 | a | 55.15 | 68.92 | 68.62 | c | 61.21 | b | 49.87 | a | 39.71 | d | 31.58 | 47.24 | ||||||
1992 | 32.84 | b | 39.05 | 40.64 | b | 47.30 | c | 57.21 | c | 65.80 | c | 64.21 | 67.22 | a | 56.73 | b | 49.79 | c | 34.32 | 25.73 | a | 48.40 | ||||
1993 | 24.40 | b | 25.52 | 40.73 | 41.90 | 55.65 | a | 54.35 | d | 58.32 | 62.87 | 57.91 | a | 48.32 | a | 31.14 | b | 30.82 | 44.33 | |||||||
1994 | 34.27 | 30.41 | a | 41.18 | a | 45.77 | 54.16 | c | 59.88 | a | 69.08 | f | 66.56 | 59.35 | c | 44.21 | b | 29.62 | b | 29.56 | d | 45.00 | a | |||
1995 | 34.84 | b | 39.54 | c | 36.42 | 40.67 | 50.53 | ----- | z | ----- | z | 62.69 | 60.05 | 45.11 | 41.16 | b | 33.26 | 44.43 | b | |||||||
1996 | 33.84 | b | 34.02 | 39.13 | 43.64 | i | 47.97 | ----- | z | ----- | z | ----- | z | ----- | z | 44.00 | o | 39.15 | m | 34.21 | 37.83 | g | ||||
1997 | 31.53 | 32.52 | 41.77 | 41.66 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.87 | h | |||
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.22 | n | 27.92 | a | 27.92 | k |
1999 | 32.10 | 30.28 | c | 37.91 | d | 39.82 | m | 47.83 | p | 56.06 | l | 65.32 | q | ----- | z | 54.50 | o | 50.60 | p | 41.94 | m | 30.12 | g | 33.43 | i | |
2000 | 32.02 | c | 35.56 | e | 35.13 | e | 46.12 | q | 51.64 | q | 61.12 | r | ----- | z | 64.00 | s | 53.88 | m | 43.50 | q | 30.52 | i | 32.95 | c | 33.92 | h |
2001 | 27.59 | i | 30.22 | a | 37.60 | j | 39.56 | n | 54.72 | m | 53.57 | p | ----- | z | 66.11 | v | 58.93 | w | 48.18 | l | 35.11 | k | 31.02 | d | 30.62 | j |
2002 | 31.52 | g | 33.44 | b | 33.40 | k | 42.16 | n | 45.12 | o | 58.23 | o | 71.68 | q | 59.97 | p | 57.29 | i | 41.45 | j | 36.28 | e | 33.39 | c | 34.37 | i |
2003 | 38.13 | a | 30.98 | f | 38.31 | g | 39.19 | l | 49.52 | k | 59.25 | h | 71.44 | o | 67.32 | q | 60.02 | i | 48.28 | h | 32.35 | f | ----- | z | 38.13 | k |
2004 | 31.82 | f | 32.04 | c | 42.81 | m | 45.72 | n | 49.17 | k | 59.57 | o | 69.22 | m | 66.93 | j | 54.92 | d | 46.55 | l | 33.14 | e | 32.65 | a | 38.19 | h |
2005 | 31.47 | b | 32.46 | b | 39.64 | i | 43.16 | k | 49.46 | h | 54.61 | h | 70.00 | s | 68.78 | m | 55.16 | n | 47.24 | j | 34.84 | k | 28.96 | h | 31.96 | j |
2006 | 34.95 | a | 31.21 | i | 35.44 | f | 42.79 | m | 53.55 | k | 63.03 | l | 71.00 | t | 62.72 | o | 56.25 | n | 44.07 | h | 40.16 | e | 29.53 | a | 34.88 | i |
2007 | 26.50 | b | 32.31 | d | 40.12 | f | 41.42 | l | ----- | z | 58.47 | m | 70.67 | g | 66.06 | o | 55.53 | m | 47.18 | l | 35.60 | i | 26.00 | a | 28.27 | i |
2008 | 24.57 | d | 33.90 | c | 34.80 | d | 37.80 | g | 49.17 | p | 52.85 | t | 68.37 | l | 66.13 | p | 56.44 | n | 46.71 | x | 38.80 | g | 28.67 | d | 30.49 | h |
2009 | 30.58 | e | 31.98 | b | 36.83 | m | 42.18 | m | 50.00 | t | 58.74 | m | 67.39 | v | 68.41 | o | 62.57 | w | 44.44 | n | 35.62 | j | 23.96 | e | 28.84 | i |
2010 | 36.67 | j | 34.48 | e | 36.00 | o | 38.00 | o | 42.25 | w | 56.67 | r | 64.67 | s | 66.03 | o | 57.19 | q | ----- | z | 34.84 | h | 34.58 | f | 34.48 | k |
2011 | 29.41 | d | 30.08 | b | 37.66 | c | 38.68 | k | 43.44 | m | 55.36 | l | 64.25 | q | ----- | z | ----- | z | 48.71 | x | 36.23 | d | 26.92 | a | 32.06 | g |
2012 | 31.90 | a | 28.78 | f | 34.89 | d | 46.20 | o | 52.25 | q | 54.62 | e | 67.80 | a | 68.46 | s | 61.14 | w | 46.90 | g | 38.11 | g | 29.65 | 43.77 | g | |
2013 | 21.83 | b | 32.27 | 37.85 | a | ----- | z | ----- | z | 60.72 | 72.58 | a | ----- | z | 57.07 | ----- | z | ----- | z | 24.04 | c | 43.76 | e | |||
2014 | 31.93 | b | 34.10 | b | 39.32 | 43.00 | l | 52.70 | p | ----- | z | 70.60 | 66.11 | c | 58.03 | 50.00 | 35.78 | 34.94 | 46.76 | c | ||||||
2015 | 36.22 | a | 39.94 | a | 43.69 | d | 42.15 | 51.35 | a | 64.18 | s | 65.05 | u | 67.73 | 56.70 | c | 51.66 | 29.72 | 32.94 | f | 46.57 | c | ||||
2016 | 33.89 | c | 38.89 | b | 38.60 | 46.70 | 50.94 | 61.13 | 65.73 | 66.08 | 53.50 | b | 47.34 | 40.93 | 23.58 | 47.28 | ||||||||||
2017 | 26.60 | p | 35.27 | d | ----- | z | ----- | z | 48.48 | j | ----- | z | ----- | z | 69.05 | a | 57.92 | 43.95 | 38.02 | 23.78 | m | 48.84 | g | |||
2018 | 36.20 | h | 38.25 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | 46.06 | v | 50.77 | ----- | z | ----- | z | 67.50 | f | 55.68 | 37.93 | b | 35.57 | 31.24 | 42.24 | g | ||||
2020 | 34.69 | 33.10 | e | 35.21 | 42.95 | 52.87 | 58.63 | 67.37 | 67.66 | 59.92 | 47.24 | 35.65 | 31.79 | 47.26 | ||||||||||||
2021 | 31.97 | a | 33.95 | 36.65 | 43.66 | a | 51.81 | 67.55 | 72.94 | m | ----- | z | ----- | z | 45.35 | 40.77 | 31.58 | 42.59 | c | |||||||
2022 | 32.29 | 32.77 | 40.45 | 38.89 | b | 47.61 | 59.92 | 71.11 | 72.22 | a | 63.30 | 51.66 | 26.05 | a | 29.11 | 47.12 | ||||||||||
2023 | 32.35 | 32.41 | 33.00 | 45.27 | 55.15 | 60.58 | 71.77 | 67.96 | d | 57.73 | 49.77 | 38.55 | 38.10 | 48.55 | ||||||||||||
2024 | 36.02 | 37.45 | 38.52 | 44.27 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.33 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.20 | 34.76 | 38.10 | 43.55 | 51.96 | 60.17 | 67.57 | 66.25 | 57.64 | 47.68 | 36.92 | 30.44 | 47.35 | |||||||||||||
S.D. | 3.89 | 3.36 | 2.76 | 3.26 | 2.61 | 3.35 | 2.94 | 2.63 | 3.04 | 3.11 | 3.74 | 3.98 | 0.91 | |||||||||||||
SKEW | -0.63 | 0.07 | 0.56 | 0.03 | 0.12 | 0.43 | -0.78 | 0.25 | -0.25 | -0.49 | -1.06 | -0.14 | -1.64 | |||||||||||||
MAX | 38.53 | 43.16 | 44.38 | 49.98 | 57.21 | 67.55 | 72.58 | 72.22 | 63.33 | 54.67 | 41.25 | 38.10 | 48.55 | |||||||||||||
MIN | 21.83 | 25.52 | 33.00 | 37.20 | 46.43 | 54.35 | 58.32 | 61.32 | 51.25 | 37.93 | 26.05 | 22.86 | 44.33 | |||||||||||||
YRS | 48 | 53 | 47 | 40 | 42 | 40 | 39 | 40 | 41 | 39 | 44 | 48 | 22 |