YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.03 | 71.84 | e | 62.42 | e | 33.77 | h | 24.24 | b | 59.38 | h | |
1949 | 14.62 | b | 29.96 | 43.48 | b | 55.72 | l | 64.80 | a | 68.73 | 81.69 | b | 81.48 | 70.10 | i | 47.33 | d | 46.08 | e | 29.78 | d | 50.80 | b | |||
1950 | 24.97 | 36.85 | a | 39.43 | c | 52.94 | m | 57.07 | c | 67.61 | b | 74.03 | 76.19 | 68.94 | l | 58.73 | e | 38.00 | a | 34.50 | c | 50.74 | b | |||
1951 | 24.19 | 36.41 | a | 45.21 | q | 52.52 | e | 64.38 | e | 62.46 | d | 78.68 | 74.23 | 67.50 | d | 48.62 | e | 37.23 | d | 24.71 | c | 51.90 | a | |||
1952 | 26.46 | c | 32.39 | a | 38.20 | a | 58.14 | h | 62.92 | f | 72.34 | a | 76.77 | 77.10 | 76.03 | 65.28 | f | 37.39 | b | 32.31 | b | 52.11 | c | |||
1953 | 37.27 | a | 35.14 | 45.03 | a | 47.70 | c | 57.62 | g | 70.14 | a | 84.00 | 81.39 | 73.69 | d | 63.93 | d | 45.15 | d | 29.30 | d | 55.70 | a | |||
1954 | 32.17 | a | 40.07 | a | 38.80 | a | 52.33 | c | 63.85 | e | 65.73 | 82.00 | a | 77.47 | a | 72.73 | d | 54.42 | g | 44.25 | f | 28.71 | c | 55.39 | b | |
1955 | 25.00 | a | 29.32 | 34.67 | a | 47.67 | c | 59.70 | h | 68.72 | a | 80.26 | 83.48 | 69.04 | b | 59.73 | i | 32.96 | d | 29.07 | d | 50.02 | b | |||
1956 | 31.87 | 27.83 | 40.84 | 52.81 | d | 65.36 | i | 74.37 | c | 80.74 | 77.81 | 72.00 | c | 54.81 | e | 30.25 | r | 29.35 | 54.24 | b | ||||||
1957 | 18.00 | a | 36.68 | 42.10 | 47.67 | 61.58 | 68.20 | 78.42 | 79.37 | a | 66.48 | g | 53.61 | 33.54 | d | 32.71 | n | 51.92 | b | |||||||
1958 | 29.70 | h | 38.89 | 36.81 | j | 46.20 | 68.07 | a | 69.41 | c | 74.87 | 80.58 | 69.57 | b | 61.00 | 37.73 | 32.56 | m | 60.70 | c | ||||||
1959 | 29.86 | i | 30.21 | 40.03 | 49.89 | c | 57.00 | 74.60 | 80.84 | 78.71 | 64.97 | 52.87 | 35.05 | i | 30.11 | d | 55.92 | b | ||||||||
1960 | 27.39 | c | 27.89 | b | 36.14 | j | 50.93 | 60.23 | a | 70.96 | b | 82.84 | 77.81 | 72.22 | c | 54.76 | j | 35.67 | f | 27.46 | c | 55.30 | c | |||
1961 | 29.54 | g | 36.78 | a | 43.28 | b | 47.90 | 61.79 | b | 76.87 | 81.39 | 80.33 | a | 58.18 | b | 50.77 | a | 35.69 | a | 23.74 | 54.25 | a | ||||
1962 | 16.26 | 29.74 | a | 38.53 | a | 52.00 | 60.00 | c | 68.57 | 76.26 | 76.19 | 70.67 | 60.43 | a | 42.50 | b | 32.03 | 51.93 | ||||||||
1963 | 18.39 | c | 39.46 | b | 43.29 | c | 47.40 | 62.10 | a | 67.07 | 80.10 | 82.16 | 71.62 | a | 60.61 | c | 40.37 | 31.00 | y | 55.69 | a | |||||
1964 | 25.73 | a | 26.52 | 34.06 | 49.65 | d | 60.84 | 64.93 | 82.94 | 76.35 | 68.52 | g | 62.86 | j | 34.82 | h | 26.72 | f | 52.63 | d | ||||||
1965 | 29.84 | 30.50 | d | 33.13 | 50.93 | b | 57.48 | 67.67 | c | 77.55 | 74.84 | 56.86 | b | 61.97 | 42.96 | b | 32.07 | b | 51.32 | |||||||
1966 | 28.23 | 29.96 | c | 47.72 | m | 49.29 | b | 68.04 | c | 68.33 | 85.03 | a | 79.03 | 71.76 | e | 53.38 | b | 41.00 | i | 28.36 | f | 59.23 | c | |||
1967 | 30.55 | i | 35.24 | g | 35.33 | s | 45.29 | b | 59.03 | b | 65.77 | 77.77 | 80.90 | 73.60 | 57.07 | p | 40.24 | i | 21.74 | 60.59 | e | |||||
1968 | 24.48 | 35.21 | 44.65 | 47.03 | 59.67 | s | 67.77 | 79.39 | 71.23 | 65.60 | 57.03 | 32.86 | a | 26.97 | 50.20 | a | ||||||||||
1969 | 29.32 | 33.11 | 39.77 | 54.00 | 65.86 | b | 64.70 | 78.87 | 83.97 | 73.77 | 48.68 | 38.10 | 29.45 | 53.30 | ||||||||||||
1970 | 29.57 | a | 39.28 | j | 39.04 | f | 42.42 | d | 61.26 | 71.90 | 78.77 | 83.29 | 61.33 | 51.35 | 45.88 | v | 26.48 | 56.26 | c | |||||||
1971 | 28.81 | 31.32 | 37.06 | ----- | z | 60.93 | c | 69.55 | s | 77.71 | 83.26 | 64.23 | 52.35 | 36.03 | 20.27 | t | 52.41 | c | ||||||||
1972 | 25.95 | i | 34.45 | 48.00 | e | 50.83 | 62.03 | b | 69.90 | 75.39 | 77.32 | 63.24 | a | 53.41 | b | 36.83 | a | 19.36 | c | 53.71 | a | |||||
1973 | 23.00 | d | 35.29 | 41.97 | 45.52 | a | 61.74 | 70.13 | 79.23 | 79.06 | 66.43 | 57.19 | 35.69 | a | 32.79 | b | 52.34 | |||||||||
1974 | 29.81 | e | 35.56 | a | 40.70 | a | 52.75 | b | 61.27 | i | 76.20 | 82.84 | 76.61 | 72.55 | a | 60.59 | d | 39.23 | h | 30.71 | q | 58.62 | c | |||
1975 | 24.21 | q | 32.68 | f | 37.73 | p | 41.33 | l | 57.21 | c | 67.00 | 81.23 | 81.06 | 79.63 | 54.13 | 31.91 | g | 42.33 | y | 70.04 | f | |||||
1976 | 32.35 | k | 35.05 | g | 42.89 | l | 56.89 | u | 67.04 | c | 75.83 | r | 84.32 | 77.95 | i | 69.00 | s | 57.27 | a | 41.74 | g | 27.00 | x | 69.54 | i | |
1977 | 24.41 | i | 35.23 | o | 40.40 | k | 57.68 | h | 59.10 | b | 74.80 | 80.24 | j | ----- | z | 73.89 | u | ----- | z | 41.75 | v | 24.38 | r | 66.95 | j | |
1978 | 29.00 | k | 35.13 | m | 49.20 | k | 49.18 | h | 56.52 | b | 69.47 | 75.79 | g | 70.65 | n | ----- | z | ----- | z | 30.60 | o | 24.44 | m | 62.99 | j | |
1979 | 14.45 | b | 34.12 | c | 43.15 | e | 49.96 | c | 64.17 | g | 71.18 | b | 80.47 | a | 75.93 | b | 73.52 | e | 59.50 | e | 32.62 | f | 31.78 | h | 55.81 | c |
1980 | 24.60 | k | 34.39 | k | 42.27 | t | 56.41 | c | 63.15 | e | 71.36 | h | 78.55 | 73.72 | b | ----- | z | 63.00 | m | 40.27 | 36.18 | c | 58.05 | f | ||
1981 | 34.11 | d | 34.22 | e | 46.23 | i | ----- | z | ----- | z | ----- | z | ----- | z | 83.77 | ----- | z | ----- | z | ----- | z | 31.36 | f | 50.70 | i | |
1982 | 26.19 | j | ----- | z | ----- | z | ----- | z | ----- | z | 67.20 | e | 70.96 | c | ----- | z | ----- | z | ----- | z | 34.19 | d | 30.86 | c | 50.80 | h |
1983 | ----- | z | 38.22 | e | 43.96 | e | 47.58 | f | ----- | z | 63.11 | l | 70.17 | b | 70.69 | b | 64.04 | d | 56.12 | g | 37.03 | a | 18.67 | a | 48.97 | e |
1984 | 24.62 | b | 32.61 | a | 41.71 | c | 47.96 | f | 56.79 | c | ----- | z | 77.00 | 76.04 | d | 61.13 | 48.06 | 35.63 | 22.52 | 47.61 | b | |||||
1985 | 22.97 | a | 26.04 | 39.33 | d | 52.60 | 63.93 | c | 70.28 | a | 80.29 | c | 75.00 | c | 58.90 | a | 52.53 | a | 28.93 | a | 22.15 | d | 49.41 | |||
1986 | 30.03 | 33.11 | a | 46.47 | a | 51.81 | i | 61.24 | b | 75.59 | a | ----- | z | 78.23 | a | 59.30 | 57.21 | b | 37.50 | f | 24.80 | a | 51.78 | c | ||
1987 | 25.69 | e | 35.82 | f | 42.07 | a | 59.00 | c | 64.77 | 71.18 | b | 73.65 | 75.10 | 72.79 | b | 62.27 | a | 41.39 | b | 26.93 | a | 55.89 | a | |||
1988 | 26.40 | f | 35.58 | c | 38.76 | f | 55.07 | a | 63.65 | 79.43 | 85.40 | a | 82.48 | 69.30 | g | 64.87 | a | 36.44 | c | 23.37 | a | 58.48 | c | |||
1989 | 25.20 | a | 24.35 | b | 40.72 | b | 51.86 | b | 59.83 | a | 70.60 | 82.54 | e | 75.16 | 70.17 | 52.84 | 39.53 | 25.45 | 51.52 | |||||||
1990 | 28.13 | a | 31.63 | a | 42.45 | 54.40 | 56.13 | 69.79 | b | 79.84 | 80.65 | 76.52 | a | 52.52 | 41.07 | 15.61 | 52.39 | |||||||||
1991 | 24.65 | 40.11 | 41.35 | 46.70 | 58.19 | 72.33 | 82.28 | b | 82.07 | b | 68.70 | c | 55.77 | 31.30 | 25.84 | 52.44 | ||||||||||
1992 | 28.19 | 39.14 | a | 49.65 | 56.60 | 67.30 | a | 70.29 | b | 71.53 | a | 78.26 | 67.63 | 59.29 | 33.41 | a | 25.37 | a | 53.89 | |||||||
1993 | 25.45 | 29.93 | 44.38 | b | 47.00 | 64.86 | c | 65.14 | b | 67.32 | 72.50 | a | 68.28 | a | 56.79 | b | 34.83 | 29.74 | 50.52 | |||||||
1994 | 33.87 | 30.93 | 46.35 | 54.87 | 66.83 | b | 72.07 | 79.30 | a | 83.97 | 75.27 | 53.23 | 31.00 | a | 29.07 | a | 54.73 | |||||||||
1995 | 26.57 | a | 37.00 | 39.90 | b | 47.80 | 59.10 | 67.45 | a | 76.84 | 80.52 | 70.60 | 49.81 | 40.73 | 32.10 | 52.37 | ||||||||||
1996 | 26.32 | 31.76 | 39.58 | 50.28 | a | 54.80 | a | 75.00 | a | 82.58 | 81.90 | 66.20 | 56.06 | 39.33 | 28.74 | 52.71 | ||||||||||
1997 | 26.67 | a | 32.11 | 43.35 | 44.43 | 61.39 | 72.27 | 77.13 | a | 77.61 | 69.65 | d | 52.00 | 39.67 | 26.74 | 51.92 | ||||||||||
1998 | 30.71 | 35.67 | a | 41.30 | a | 50.97 | 62.97 | b | 61.03 | a | 83.16 | 82.13 | 74.73 | ----- | z | 38.93 | 26.48 | 53.46 | a | |||||||
1999 | 31.27 | a | 34.29 | 43.74 | 48.23 | 58.13 | a | 67.30 | 79.27 | a | 79.06 | 65.53 | 60.93 | b | 49.37 | 28.29 | 53.78 | |||||||||
2000 | 30.48 | 37.38 | 43.29 | 54.43 | b | 62.17 | a | 69.27 | 82.29 | 83.00 | 67.10 | 55.86 | c | 30.21 | a | 27.68 | 53.60 | |||||||||
2001 | 26.39 | 31.21 | 44.19 | 50.03 | 64.65 | 70.70 | 81.19 | 85.16 | 74.80 | 55.29 | 43.43 | 27.19 | 54.52 | |||||||||||||
2002 | 26.90 | 31.82 | 36.71 | 49.83 | 59.13 | a | 70.90 | a | 84.77 | 77.68 | 71.00 | 49.71 | 36.70 | 31.55 | 52.23 | |||||||||||
2003 | 33.03 | 31.39 | 41.87 | 52.50 | 60.83 | a | 69.20 | 86.61 | 84.97 | 69.23 | 62.63 | a | 32.93 | 31.65 | 54.74 | |||||||||||
2004 | 28.48 | b | 32.28 | 47.84 | 56.77 | 59.57 | a | 68.67 | 78.65 | 76.03 | 68.19 | c | 53.43 | a | 39.67 | 32.87 | a | 53.54 | ||||||||
2005 | 30.77 | a | 35.29 | 42.03 | 51.03 | 58.71 | 65.45 | a | 80.80 | a | 76.94 | 67.10 | a | 57.84 | 37.37 | ----- | z | 54.85 | a | |||||||
2006 | 31.71 | 29.00 | 41.06 | 52.07 | a | 63.90 | 74.39 | b | 82.59 | b | 80.16 | 68.83 | 52.50 | a | 40.37 | 28.86 | b | 53.79 | ||||||||
2007 | 23.52 | 33.96 | a | 48.26 | 52.63 | 65.30 | a | 74.13 | 88.48 | 80.68 | 70.34 | a | 53.14 | c | 41.40 | 25.23 | 54.76 | |||||||||
2008 | 22.77 | 33.00 | a | 37.97 | b | 43.79 | a | 57.43 | c | 67.00 | 81.10 | 81.65 | 68.80 | 55.60 | a | 43.30 | 25.26 | 51.47 | ||||||||
2009 | 27.58 | 32.82 | 38.65 | 47.93 | 62.27 | a | 65.28 | a | 75.73 | a | 76.77 | 76.53 | 44.32 | 41.50 | ----- | z | 53.58 | a | ||||||||
2010 | 30.45 | 34.86 | 46.87 | 50.73 | 54.23 | 67.41 | a | 78.00 | 77.73 | a | 74.00 | a | 60.35 | 35.70 | 29.19 | 53.29 | ||||||||||
2011 | 25.52 | 25.96 | 39.65 | 43.07 | a | 54.03 | 66.27 | 80.71 | 82.06 | 74.77 | 55.57 | a | 35.23 | 25.93 | a | 50.73 | ||||||||||
2012 | 29.45 | 31.71 | a | 44.45 | 56.30 | 60.26 | 72.97 | 83.03 | 83.19 | 74.97 | 52.87 | 42.17 | 29.50 | a | 55.07 | |||||||||||
2013 | 23.48 | 32.39 | 39.42 | 47.80 | 62.35 | 72.43 | 82.58 | 81.77 | 69.60 | 50.03 | 38.47 | 21.65 | 51.83 | |||||||||||||
2014 | 27.16 | 27.29 | 39.55 | 48.77 | 63.71 | 66.83 | 80.39 | 72.84 | 69.30 | 59.23 | 35.97 | 31.55 | 51.88 | |||||||||||||
2015 | 29.87 | 38.18 | 48.48 | 54.00 | 58.94 | 76.17 | 76.65 | 77.77 | 73.07 | 61.65 | 31.30 | 26.16 | 54.35 | |||||||||||||
2016 | 29.26 | 36.90 | 41.84 | 55.83 | 60.39 | 76.10 | 78.81 | 79.55 | 67.10 | 53.42 | 45.07 | 20.65 | 53.74 | |||||||||||||
2017 | 19.97 | 33.50 | 46.00 | 50.53 | 61.29 | 70.00 | 83.42 | 79.45 | 66.63 | 53.06 | 37.00 | 27.45 | 52.36 | |||||||||||||
2018 | 30.48 | 26.68 | 38.58 | 48.77 | 63.39 | 66.87 | g | 80.74 | 77.32 | 69.93 | 52.65 | 34.47 | 27.42 | 50.04 | a | |||||||||||
2019 | 27.48 | 25.54 | 37.39 | 49.60 | 57.03 | 67.57 | 77.71 | 78.90 | 65.33 | 42.30 | a | 37.33 | 27.61 | 49.48 | ||||||||||||
2020 | 29.45 | 28.93 | 40.84 | 46.57 | 60.84 | 67.37 | 77.48 | b | 83.65 | 72.13 | 52.65 | 37.77 | 27.52 | 52.10 | ||||||||||||
2021 | 28.29 | 25.36 | 41.48 | 49.47 | 59.77 | 79.33 | 85.23 | 75.84 | 72.77 | 52.94 | 42.60 | 32.37 | a | 53.79 | ||||||||||||
2022 | 26.65 | 28.18 | 42.32 | 44.40 | 54.90 | 67.07 | 82.39 | 82.20 | a | 75.20 | 58.10 | 28.70 | 26.72 | b | 51.40 | |||||||||||
2023 | 24.42 | 26.75 | 32.52 | 45.17 | 66.16 | 66.40 | 79.61 | 76.32 | 69.17 | 54.23 | 40.93 | a | 32.80 | a | 51.21 | |||||||||||
2024 | 27.39 | 35.00 | 40.29 | 49.79 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.23 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.91 | 32.62 | 41.58 | 50.18 | 61.11 | 69.90 | 79.73 | 78.98 | 69.51 | 55.17 | 37.83 | 27.54 | 52.62 | |||||||||||||
S.D. | 4.45 | 4.00 | 3.68 | 3.72 | 3.48 | 3.81 | 3.83 | 3.36 | 4.80 | 4.75 | 4.34 | 4.01 | 1.46 | |||||||||||||
SKEW | -0.75 | -0.11 | -0.11 | 0.11 | 0.01 | 0.41 | -0.69 | -0.25 | -0.60 | -0.15 | 0.10 | -0.52 | -0.25 | |||||||||||||
MAX | 37.27 | 40.11 | 49.65 | 59.00 | 68.07 | 79.43 | 88.48 | 85.16 | 79.63 | 64.87 | 49.37 | 36.18 | 55.07 | |||||||||||||
MIN | 14.45 | 24.35 | 32.52 | 42.42 | 54.03 | 61.03 | 67.32 | 70.69 | 56.86 | 42.30 | 28.70 | 15.61 | 49.41 | |||||||||||||
YRS | 63 | 67 | 62 | 62 | 65 | 68 | 71 | 72 | 65 | 63 | 59 | 61 | 36 |