YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.63 | 61.90 | 57.10 | 50.23 | 38.32 | 31.43 | 16.24 | b | 44.41 | e | ||||||
1950 | 8.10 | b | 20.50 | 22.26 | 32.07 | a | 41.33 | a | 54.27 | 57.87 | 57.00 | 50.34 | a | 41.96 | d | 22.31 | a | 17.80 | a | 35.48 | ||||||
1951 | 13.43 | a | 16.44 | a | 18.77 | a | 31.27 | 46.52 | 51.47 | 61.30 | a | 59.90 | 47.03 | 36.35 | 20.70 | 14.03 | 34.77 | |||||||||
1952 | 14.48 | 19.00 | 20.81 | 36.03 | 46.13 | 59.63 | 60.61 | 61.42 | 50.87 | 34.00 | 22.20 | 13.48 | 36.56 | |||||||||||||
1953 | 22.39 | 17.68 | 27.77 | 30.83 | 42.84 | 57.87 | 63.03 | 60.68 | 51.70 | 40.77 | 28.57 | 17.00 | 38.43 | |||||||||||||
1954 | 16.65 | 27.89 | i | 21.35 | 38.03 | a | 44.16 | 56.53 | 66.65 | 62.13 | 54.03 | 38.19 | 28.97 | 18.26 | 40.45 | a | ||||||||||
1955 | 14.65 | 13.25 | 20.48 | 38.13 | 47.68 | 53.20 | 65.32 | 64.10 | 52.03 | 39.06 | 20.20 | 15.94 | 37.00 | |||||||||||||
1956 | 16.71 | 14.55 | 23.97 | 31.87 | 48.13 | 61.50 | 61.45 | 58.19 | 49.87 | 40.13 | 25.77 | 21.84 | 37.83 | |||||||||||||
1957 | 8.77 | 21.71 | 24.58 | 33.17 | 44.77 | 53.67 | 62.04 | d | 60.42 | 46.33 | 41.13 | 25.20 | 20.68 | 36.87 | ||||||||||||
1958 | 15.06 | 19.71 | 19.55 | 33.90 | 50.42 | 56.20 | 59.42 | 59.90 | 52.03 | 36.32 | 24.70 | 20.00 | 37.27 | |||||||||||||
1959 | 12.48 | 15.86 | 22.97 | 32.00 | 46.10 | 58.87 | 57.52 | 61.58 | 47.37 | 32.87 | 19.60 | 19.39 | 35.55 | |||||||||||||
1960 | 10.77 | 9.03 | 18.65 | 36.63 | 43.87 | 53.90 | 59.23 | 58.48 | 49.77 | 38.65 | 24.63 | 16.97 | 35.05 | |||||||||||||
1961 | 14.61 | 18.64 | 25.35 | 30.80 | 43.58 | 53.83 | 59.97 | 59.90 | 44.47 | 34.26 | 20.63 | 12.16 | 34.85 | |||||||||||||
1962 | 7.71 | 19.04 | 18.81 | 35.63 | 47.03 | 53.80 | 59.94 | 57.29 | 48.83 | 37.23 | 26.57 | 18.84 | 35.89 | |||||||||||||
1963 | 2.58 | 21.25 | 25.97 | 35.93 | 46.97 | 57.63 | 63.81 | 61.35 | 55.63 | 42.81 | 26.00 | 11.87 | 37.65 | |||||||||||||
1964 | 15.29 | 16.14 | 18.84 | 33.17 | 44.10 | 52.43 | 62.74 | 55.23 | 48.47 | 33.52 | 23.87 | 13.23 | 34.75 | |||||||||||||
1965 | 17.52 | 11.82 | 12.58 | 37.21 | a | 45.16 | 55.10 | 61.40 | a | 56.87 | 43.80 | 38.61 | 28.90 | 19.77 | 35.73 | |||||||||||
1966 | 8.52 | 14.11 | 25.94 | 32.10 | 44.42 | 53.67 | 64.77 | 56.03 | a | 50.07 | 33.87 | 23.88 | e | 13.23 | 35.05 | |||||||||||
1967 | 16.65 | 16.39 | 24.45 | 34.00 | 39.83 | a | 51.87 | 58.52 | 55.97 | 46.80 | 35.61 | 22.70 | 12.74 | 34.63 | ||||||||||||
1968 | 12.77 | 16.69 | 22.29 | 29.67 | 39.97 | a | 53.47 | 59.10 | 55.20 | a | 46.53 | 35.58 | 24.21 | a | 11.57 | a | 33.92 | |||||||||
1969 | 14.42 | 19.71 | 18.00 | 36.50 | 47.68 | 48.90 | 60.65 | 61.32 | 53.66 | a | 34.61 | 24.87 | 20.48 | 36.73 | ||||||||||||
1970 | 13.19 | 18.29 | 20.52 | 30.53 | 44.29 | 51.87 | 61.32 | 60.61 | 45.93 | a | 33.03 | 24.33 | 15.90 | 34.99 | ||||||||||||
1971 | 14.13 | 17.71 | 24.32 | 34.03 | 41.58 | 54.03 | 56.35 | 58.84 | 43.83 | a | 35.31 | b | 24.27 | 18.27 | a | 35.22 | ||||||||||
1972 | 10.94 | 18.07 | 26.42 | 34.34 | a | 44.52 | 55.23 | 58.55 | 57.81 | 49.10 | 35.65 | e | 20.96 | e | 10.32 | 35.16 | ||||||||||
1973 | 14.84 | 19.43 | 29.61 | 29.43 | 42.57 | a | 52.03 | a | 58.45 | 59.03 | a | 48.07 | 37.13 | 25.23 | 15.65 | 35.96 | ||||||||||
1974 | 8.52 | 19.11 | 24.87 | 33.07 | 44.77 | 52.47 | 60.20 | a | 53.73 | a | 41.67 | 36.48 | 23.23 | 13.23 | 34.28 | |||||||||||
1975 | 13.32 | 14.14 | 20.77 | 38.29 | f | 41.58 | 51.37 | 59.23 | a | 56.65 | 43.83 | 32.23 | 18.73 | h | 18.35 | 35.15 | b | |||||||||
1976 | 12.10 | 22.03 | 20.71 | 35.77 | 39.83 | b | 51.03 | 59.21 | b | 56.10 | a | 47.96 | b | 30.55 | 19.20 | 16.42 | 34.24 | |||||||||
1977 | 4.97 | 20.61 | 21.93 | b | 36.50 | 47.06 | 56.37 | 61.55 | 57.74 | 50.57 | 35.97 | 25.90 | 17.77 | 36.41 | ||||||||||||
1978 | 7.74 | 12.29 | 21.41 | n | 31.36 | p | 43.57 | h | 56.33 | 61.32 | 55.94 | 56.00 | s | 33.86 | c | 24.26 | k | 6.94 | n | 37.91 | f | |||||
1979 | ----- | z | ----- | z | ----- | z | 35.40 | j | 40.64 | i | 52.00 | h | 59.08 | f | 55.41 | d | 48.60 | e | 37.03 | 20.82 | b | 20.81 | j | 40.47 | h | |
1980 | 12.77 | a | 19.90 | 21.39 | 31.87 | 44.32 | 53.97 | 62.70 | a | 57.71 | 49.97 | 32.79 | c | 24.40 | e | 20.79 | b | 36.05 | ||||||||
1981 | 19.00 | j | 16.71 | 26.13 | 40.40 | 43.16 | 54.80 | 60.42 | 56.65 | 49.63 | 37.35 | 27.67 | 17.52 | 39.13 | a | |||||||||||
1982 | 9.65 | 15.57 | ----- | z | 30.93 | b | 43.94 | 50.13 | 57.23 | a | 58.03 | b | 48.54 | b | 32.86 | i | 17.59 | h | 14.45 | 36.50 | c | |||||
1983 | 17.55 | 21.36 | 24.50 | c | 29.38 | a | 39.61 | c | 49.64 | b | 58.84 | 61.14 | c | 50.88 | f | 36.11 | d | 23.39 | b | 3.61 | c | 33.19 | a | |||
1984 | 10.32 | 18.45 | g | 22.50 | g | 30.81 | c | 44.50 | c | 50.42 | k | 58.68 | 57.81 | 43.74 | c | 39.16 | l | 21.58 | d | 11.48 | f | 38.21 | e | |||
1985 | 10.77 | a | 9.96 | b | 24.37 | a | 32.63 | 43.10 | 46.48 | c | 56.08 | g | 53.88 | w | 42.08 | q | 29.86 | i | 15.20 | j | 9.62 | j | 27.88 | f | ||
1986 | 17.29 | j | 14.11 | i | 25.10 | k | 36.17 | l | 43.84 | l | 54.94 | l | 57.73 | t | 55.44 | o | 47.50 | n | 36.86 | i | 21.94 | m | 13.82 | t | ----- | z |
1987 | 17.74 | l | 24.25 | h | 22.81 | j | 31.55 | j | 48.32 | l | 53.69 | n | 58.83 | s | 53.91 | t | 45.12 | m | 32.58 | l | 26.35 | m | 16.22 | v | ----- | z |
1988 | 8.00 | k | 13.79 | j | ----- | z | 32.09 | h | 44.00 | j | 55.58 | r | 58.43 | q | 59.74 | l | 47.85 | j | 36.12 | n | 23.67 | u | 8.67 | y | ----- | z |
1989 | 16.25 | k | 6.68 | i | 22.48 | j | 29.63 | k | 39.78 | v | 49.00 | m | 61.71 | j | 55.89 | v | 46.90 | i | 32.71 | j | ----- | z | 8.12 | w | ----- | z |
1990 | 18.08 | g | 20.25 | 28.74 | 37.57 | 42.19 | 57.00 | a | 59.52 | b | 57.58 | 52.87 | 36.18 | c | 27.23 | 12.93 | a | 39.28 | a | |||||||
1991 | 13.19 | 22.54 | 27.23 | a | 35.43 | 47.69 | b | 58.57 | b | 60.77 | 59.29 | 48.90 | a | 36.35 | 24.50 | b | 21.52 | 38.00 | ||||||||
1992 | 18.32 | 27.24 | 30.23 | 36.17 | a | 45.64 | c | 53.48 | a | 58.23 | a | 56.83 | b | 49.74 | c | 37.53 | a | 24.67 | 13.74 | 37.65 | ||||||
1993 | 14.13 | 12.39 | e | 27.81 | d | 33.17 | g | 45.26 | l | 52.65 | j | 60.52 | f | 58.14 | b | 44.85 | d | 37.84 | f | 21.41 | m | 21.23 | e | 29.76 | f | |
1994 | 17.08 | e | 11.50 | f | 25.00 | g | 33.56 | e | 49.07 | d | 58.40 | e | 56.96 | f | 60.17 | b | 49.65 | d | 38.83 | a | 25.61 | g | 23.43 | c | 41.27 | d |
1995 | 19.18 | c | 23.63 | a | 23.44 | f | 31.61 | b | 41.19 | d | 52.66 | a | 58.00 | d | 61.10 | b | 49.00 | e | 34.08 | e | 27.33 | c | 17.90 | 37.79 | a | |
1996 | ----- | z | 19.07 | 21.77 | 33.07 | c | 47.40 | a | 56.27 | 60.65 | 58.13 | 48.00 | d | 36.42 | 21.68 | b | 14.27 | a | 37.88 | a | ||||||
1997 | 13.71 | 18.15 | a | 26.59 | d | 29.39 | b | 42.58 | 56.40 | 60.48 | 59.16 | 50.16 | e | 36.81 | 24.66 | a | 20.83 | b | 36.58 | |||||||
1998 | 18.61 | 25.43 | 24.07 | a | 32.67 | 47.55 | 51.80 | 63.10 | 59.52 | 55.33 | 38.39 | 30.67 | 16.19 | 38.61 | ||||||||||||
1999 | 18.77 | 23.43 | 27.13 | 34.83 | 45.42 | 54.80 | 63.42 | 60.45 | 47.13 | 36.13 | 29.77 | 21.65 | 38.58 | |||||||||||||
2000 | 19.42 | 24.31 | 30.00 | 34.10 | 47.94 | 54.43 | 61.87 | 61.68 | 50.33 | 39.58 | 20.07 | 12.94 | 38.06 | |||||||||||||
2001 | 18.32 | 18.96 | 27.87 | 36.29 | b | 46.97 | 57.32 | e | 64.63 | a | 59.77 | a | 50.57 | 36.81 | 27.77 | 19.94 | 38.77 | |||||||||
2002 | 16.35 | 18.14 | 18.20 | f | 35.45 | a | 42.39 | 60.53 | 63.55 | 59.90 | 50.97 | 34.03 | 27.07 | 20.87 | 39.02 | a | ||||||||||
2003 | 20.65 | 15.43 | 28.10 | 37.57 | 47.42 | 54.67 | 61.90 | 61.90 | 47.30 | 39.74 | d | 25.40 | 19.16 | 38.27 | ||||||||||||
2004 | 17.61 | 18.76 | 30.48 | 35.30 | 46.32 | 54.38 | i | 59.15 | k | 54.55 | 51.37 | 37.53 | a | 27.00 | a | 20.38 | b | 33.93 | b | |||||||
2005 | 19.00 | 23.25 | 26.84 | 35.10 | 44.26 | 56.90 | 61.45 | 59.26 | ----- | z | 37.81 | 29.73 | 17.65 | 37.39 | a | |||||||||||
2006 | 23.39 | 16.54 | 25.74 | 35.31 | a | 45.45 | 57.97 | 64.39 | 59.97 | 45.52 | a | 37.39 | 25.77 | 18.65 | 38.01 | |||||||||||
2007 | 8.23 | 14.07 | 33.10 | 33.33 | 47.13 | 55.70 | 61.70 | a | 63.45 | 52.03 | 40.00 | 24.77 | 13.10 | 37.22 | ||||||||||||
2008 | 13.00 | a | 18.52 | 25.73 | a | 31.27 | 42.32 | 53.33 | 62.29 | 60.45 | 48.40 | 37.77 | 28.76 | a | 12.77 | 36.22 | ||||||||||
2009 | 18.81 | 21.50 | 25.13 | 33.43 | 46.19 | 54.20 | 59.16 | 57.29 | 49.17 | 31.32 | 28.33 | 11.81 | 36.36 | |||||||||||||
2010 | 16.81 | 15.86 | 25.84 | 37.40 | 41.55 | 57.47 | 61.23 | 60.00 | 50.00 | 38.81 | 23.27 | 18.97 | 37.27 | |||||||||||||
2011 | 13.29 | c | 11.82 | 24.87 | 35.87 | 41.26 | 57.43 | 64.84 | 61.94 | 48.79 | f | 37.16 | 23.53 | 15.08 | g | 37.20 | b | |||||||||
2012 | 17.26 | ----- | z | 32.42 | 41.67 | 46.16 | 60.67 | 63.58 | 59.39 | 50.07 | 35.10 | 23.73 | 12.19 | 40.20 | a | |||||||||||
2013 | 14.68 | 16.11 | 21.76 | f | 27.70 | 46.58 | 58.13 | 61.67 | a | 62.00 | 56.55 | a | 36.55 | 24.80 | 14.45 | 38.11 | a | |||||||||
2014 | 16.39 | 13.21 | 25.00 | e | 36.80 | 45.35 | 53.87 | 62.13 | 57.71 | 52.23 | 45.19 | 23.14 | h | 22.37 | a | 39.11 | a | |||||||||
2015 | 20.45 | 21.89 | 29.62 | e | 41.07 | a | 44.13 | 58.17 | 56.10 | 54.57 | a | 52.47 | 39.00 | d | 26.10 | ----- | z | 40.32 | a | |||||||
2016 | 16.47 | a | 23.24 | 29.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.37 | ----- | z | 30.43 | ----- | z | 30.31 | g | ||||
2017 | 19.23 | 28.75 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.99 | j | ||
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | 44.16 | 58.53 | 61.39 | 59.71 | 47.33 | ----- | z | 27.87 | 19.57 | a | 45.51 | e | ||||||
2021 | 18.16 | 10.61 | 27.97 | 31.27 | 45.74 | 58.62 | i | 60.90 | 59.81 | 53.63 | 37.35 | 27.50 | 20.19 | 35.74 | a | |||||||||||
2022 | 13.87 | 13.89 | 22.97 | a | 31.77 | 43.52 | 57.00 | 63.74 | 59.74 | 52.17 | 36.35 | 20.73 | 11.58 | 35.61 | ||||||||||||
2023 | 15.39 | 15.36 | 21.94 | 32.30 | 48.71 | 55.83 | 60.81 | 60.26 | 51.50 | 36.39 | 25.53 | 22.16 | 37.18 | |||||||||||||
2024 | 12.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 12.97 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.49 | 18.05 | 24.57 | 34.03 | 44.73 | 55.01 | 61.01 | 58.89 | 49.38 | 36.81 | 25.01 | 16.72 | 36.40 | |||||||||||||
S.D. | 4.17 | 4.16 | 3.96 | 2.98 | 2.51 | 3.00 | 2.27 | 2.27 | 3.09 | 2.72 | 2.98 | 3.86 | 1.37 | |||||||||||||
SKEW | -0.45 | 0.12 | -0.30 | 0.33 | -0.15 | -0.22 | 0.10 | -0.15 | -0.15 | 0.32 | 0.05 | -0.60 | 0.05 | |||||||||||||
MAX | 23.39 | 28.75 | 33.10 | 41.67 | 50.42 | 61.50 | 66.65 | 64.10 | 56.55 | 45.19 | 31.43 | 23.43 | 38.77 | |||||||||||||
MIN | 2.58 | 9.03 | 12.58 | 27.70 | 39.61 | 46.48 | 56.10 | 53.73 | 41.67 | 30.55 | 19.20 | 3.61 | 33.92 | |||||||||||||
YRS | 64 | 62 | 58 | 61 | 63 | 62 | 62 | 66 | 63 | 62 | 61 | 61 | 42 |