YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | 34.14 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.80 | t | 58.71 | 40.87 | 33.94 | 44.50 | i | |||
1966 | 21.29 | 28.61 | 40.35 | 44.87 | 58.52 | 74.93 | 81.52 | 72.35 | 67.07 | 53.94 | 38.30 | 29.74 | 50.96 | |||||||||||||
1967 | 27.68 | 23.50 | 37.42 | 52.77 | 57.74 | 70.93 | 74.74 | 73.48 | 68.37 | 53.26 | 37.33 | 31.48 | 50.73 | |||||||||||||
1968 | 25.32 | 24.03 | 43.71 | 53.00 | 59.87 | 66.90 | 75.32 | 74.19 | 67.53 | 60.23 | a | 39.80 | 28.32 | 51.52 | ||||||||||||
1969 | 26.23 | 30.25 | 33.84 | 50.13 | 64.42 | 64.57 | 74.48 | 80.35 | 67.03 | 52.16 | 42.43 | 30.55 | 51.37 | |||||||||||||
1970 | 21.90 | 27.68 | 33.87 | 50.73 | 57.03 | 73.17 | 78.55 | 77.84 | 66.63 | 61.42 | 40.87 | 30.00 | 51.64 | |||||||||||||
1971 | 20.45 | 27.32 | 34.26 | 51.53 | 60.71 | 73.90 | 73.93 | c | 74.38 | e | 70.07 | c | 61.23 | 41.30 | 31.89 | c | 51.75 | |||||||||
1972 | 23.63 | a | 23.17 | 31.16 | 42.30 | 65.10 | 69.40 | 73.16 | 72.12 | e | 64.11 | b | 51.81 | d | 38.00 | f | 24.20 | k | 51.60 | b | ||||||
1973 | 30.47 | a | 31.17 | j | 42.35 | 48.83 | 56.04 | c | 70.22 | c | 77.67 | m | 77.50 | k | 71.05 | i | 61.59 | i | 42.43 | i | 31.33 | s | 49.58 | g | ||
1974 | 27.21 | q | 27.69 | o | 35.96 | c | 48.88 | m | 58.75 | w | ----- | z | ----- | z | ----- | z | 64.17 | 57.00 | b | 43.41 | h | 36.00 | c | 48.28 | h | |
1975 | 28.71 | 30.18 | 33.23 | a | 41.63 | 65.83 | b | 73.37 | 80.72 | b | 77.61 | 64.72 | a | 60.09 | h | 47.47 | 29.94 | 52.13 | a | |||||||
1976 | 23.42 | 36.32 | a | 37.00 | 54.50 | 61.26 | 78.67 | 79.16 | 81.61 | 70.60 | 51.77 | 36.47 | 23.45 | 52.85 | ||||||||||||
1977 | 16.35 | 28.14 | 43.35 | 53.57 | 71.55 | 70.70 | 78.45 | 71.10 | 64.30 | 58.94 | 42.80 | 27.94 | 52.27 | |||||||||||||
1978 | 24.37 | a | 25.21 | 37.35 | 45.13 | 66.16 | 73.73 | 77.55 | 78.10 | 67.63 | 56.87 | a | 42.97 | 26.42 | 51.79 | |||||||||||
1979 | 17.71 | 20.71 | 35.90 | 46.47 | 57.84 | 70.59 | a | 77.16 | 73.90 | 69.10 | 50.90 | 40.30 | 34.81 | 49.62 | ||||||||||||
1980 | 26.94 | m | 25.62 | 34.84 | 50.93 | 68.23 | a | 70.53 | 78.93 | a | 75.45 | 65.21 | a | 50.29 | 41.07 | 26.87 | 53.45 | a | ||||||||
1981 | 26.94 | 30.54 | 37.81 | d | 53.91 | h | 63.61 | 72.43 | 77.74 | 75.31 | b | 63.24 | a | 51.29 | 47.42 | d | 30.35 | 52.43 | a | |||||||
1982 | 20.11 | c | 26.04 | 36.10 | 49.46 | d | 67.87 | 67.47 | 77.37 | a | 71.19 | 65.53 | 55.77 | 40.63 | c | 32.74 | 50.86 | |||||||||
1983 | 28.37 | a | 33.79 | 35.77 | a | 44.77 | 56.45 | 75.28 | a | 82.97 | 79.84 | 69.13 | 55.16 | 44.47 | o | 20.26 | 52.89 | a | ||||||||
1984 | 24.58 | 35.66 | 32.00 | 56.43 | p | 63.32 | 76.17 | 79.55 | 77.27 | a | 65.20 | 57.97 | 42.83 | f | 29.94 | 54.16 | b | |||||||||
1985 | 22.06 | 23.36 | 39.87 | a | 63.67 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.21 | q | 37.56 | c | 22.54 | e | 29.08 | g | ||
1986 | 28.17 | b | 27.42 | b | 41.27 | a | 55.23 | 69.65 | 73.86 | b | 79.29 | 74.73 | a | 64.88 | d | 55.90 | 36.96 | g | 33.65 | 54.91 | a | |||||
1987 | 31.23 | 35.75 | d | 43.13 | 58.86 | a | 70.15 | d | 77.39 | b | 80.96 | f | 78.33 | d | 68.48 | c | 53.00 | b | 46.08 | f | 32.44 | m | 57.37 | c | ||
1988 | 24.83 | a | 24.65 | c | 37.77 | 51.86 | a | 70.28 | b | 80.68 | b | 84.30 | a | 75.96 | f | 69.12 | d | 50.00 | c | 39.96 | f | 29.04 | f | 54.83 | c | |
1989 | 32.48 | 23.75 | d | ----- | z | 47.62 | d | 66.52 | b | 70.07 | c | 79.26 | 77.04 | g | 71.65 | d | 60.96 | d | 37.72 | e | 20.68 | 51.07 | b | |||
1990 | 34.68 | c | ----- | z | 43.03 | 53.58 | d | 58.33 | a | 73.75 | b | 78.29 | 79.83 | h | 68.14 | b | 55.11 | d | 45.88 | e | 30.28 | b | 54.11 | b | ||
1991 | 23.58 | 35.33 | a | 39.00 | a | 54.47 | 66.94 | 76.84 | e | 76.78 | d | 82.83 | g | 67.00 | a | 55.82 | c | 39.28 | e | 32.32 | c | 51.58 | a | |||
1992 | 28.97 | 32.00 | b | 36.21 | b | 47.80 | 69.67 | d | 72.46 | f | 73.74 | l | 74.76 | j | 66.70 | g | 52.96 | d | 38.95 | j | 34.70 | k | 44.60 | f | ||
1993 | 23.83 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.18 | s | 28.55 | b | 28.55 | k |
1994 | 15.00 | j | 15.62 | g | 39.15 | d | 50.96 | e | 64.33 | m | 72.88 | f | 73.46 | g | 73.69 | e | 68.67 | f | 57.50 | g | 49.26 | g | 37.67 | y | 54.60 | i |
1995 | 30.00 | u | 27.72 | c | 37.08 | r | 45.92 | r | 63.19 | e | 79.05 | h | 77.07 | b | 78.37 | d | 65.43 | b | ----- | z | 34.24 | e | 26.30 | d | 53.19 | e |
1996 | 23.78 | d | 19.73 | r | 34.84 | l | 43.32 | b | 56.93 | c | 69.93 | c | ----- | z | ----- | z | 69.91 | g | 56.39 | 36.31 | d | 28.04 | e | 44.96 | e | |
1997 | 23.80 | a | 30.09 | e | 36.37 | l | 45.33 | o | 55.41 | d | 73.86 | h | 75.71 | n | 72.38 | j | 70.36 | s | 57.67 | g | 39.41 | c | 34.76 | f | 37.18 | h |
1998 | 27.61 | 39.89 | i | 35.35 | e | 55.35 | j | 67.53 | a | 70.18 | b | 80.10 | k | 79.05 | i | 73.40 | j | 64.73 | t | 42.88 | m | 34.61 | h | 50.17 | h | |
1999 | 25.62 | g | 34.85 | o | 39.68 | c | 52.15 | j | 70.50 | k | 78.17 | r | 82.11 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.68 | k |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.79 | b | 74.52 | f | 75.92 | g | 69.03 | a | 54.22 | d | 39.48 | c | 33.82 | i | 58.13 | h |
2004 | 18.03 | a | 31.71 | a | 38.57 | c | 48.67 | i | 58.04 | e | 67.15 | d | 71.40 | a | 68.84 | f | 73.95 | k | 56.23 | e | 44.39 | b | 28.12 | f | 48.19 | d |
2005 | 22.69 | b | 32.60 | c | 35.61 | c | 52.41 | c | 57.96 | g | 74.30 | c | 76.50 | o | 78.29 | c | 74.68 | b | 57.90 | j | 44.40 | t | 25.00 | v | 52.94 | e |
2006 | 32.91 | t | 28.00 | l | 39.73 | p | 54.00 | y | 63.33 | g | 72.71 | m | 79.90 | j | 76.45 | 66.07 | b | 51.61 | ----- | z | 34.73 | p | 64.71 | i | ||
2007 | 27.20 | a | 19.85 | b | 42.70 | h | 44.18 | h | 67.58 | l | 72.36 | p | 77.57 | h | 80.83 | y | 68.71 | i | 57.89 | d | 38.38 | q | 28.75 | s | 34.98 | i |
2008 | 23.32 | l | 26.75 | y | 33.53 | l | 52.42 | r | 56.38 | r | 69.53 | 74.45 | 76.10 | 70.07 | 55.13 | 40.23 | 23.94 | 58.49 | e | |||||||
2009 | 18.94 | 27.96 | 36.61 | 45.83 | 60.10 | 66.87 | 69.26 | 71.48 | 71.37 | 47.71 | 48.00 | 26.74 | 49.24 | |||||||||||||
2010 | 26.32 | 28.18 | 45.00 | 56.50 | 66.06 | 67.93 | 78.13 | 77.90 | 63.20 | 58.06 | 42.87 | 28.03 | 53.18 | |||||||||||||
2011 | 21.68 | 27.79 | 33.42 | 46.50 | 58.45 | 67.03 | 80.77 | 78.84 | 67.17 | 57.87 | 43.83 | 32.29 | 51.30 | |||||||||||||
2012 | 29.19 | 33.38 | 50.48 | ----- | z | 68.13 | 75.07 | 80.03 | 77.29 | 66.10 | 53.42 | 41.43 | 32.35 | 55.17 | a | |||||||||||
2013 | 26.29 | 25.18 | 31.06 | 40.67 | 55.00 | 67.87 | 74.77 | 76.68 | 67.23 | 54.06 | 38.40 | 21.48 | 48.23 | |||||||||||||
2014 | 15.32 | 18.25 | 27.39 | 42.87 | 59.55 | 68.40 | 73.55 | 70.10 | 66.13 | 51.06 | 33.53 | 30.52 | 46.39 | |||||||||||||
2015 | 22.03 | 14.18 | 35.61 | 47.27 | 63.10 | b | 65.83 | 75.71 | 75.50 | k | 74.40 | 55.06 | 47.40 | 36.13 | 48.79 | a | ||||||||||
2016 | 25.81 | 28.83 | 38.74 | 43.73 | 61.26 | 69.47 | 76.29 | 75.90 | 69.20 | 56.39 | 50.33 | 28.74 | 52.06 | |||||||||||||
2017 | 28.48 | 32.21 | 33.19 | 49.13 | 54.90 | 69.83 | 72.90 | 69.71 | 70.10 | 59.13 | 36.83 | 25.03 | 50.12 | |||||||||||||
2018 | 24.68 | 24.89 | 32.81 | 38.80 | 67.26 | 69.17 | 77.48 | 73.94 | 67.77 | 47.39 | 32.83 | 31.94 | 49.08 | |||||||||||||
2019 | 20.90 | 21.25 | 34.32 | 44.97 | 53.77 | 67.53 | 78.35 | 73.10 | 67.30 | 53.26 | 33.50 | 29.58 | 48.15 | |||||||||||||
2020 | 28.42 | 29.00 | 37.10 | 42.53 | 58.48 | 73.23 | 79.10 | 73.48 | 64.87 | 46.52 | 46.43 | 30.87 | 50.84 | |||||||||||||
2021 | 29.48 | 23.43 | 41.42 | 47.33 | 60.68 | 74.30 | 75.81 | 79.26 | 68.63 | 60.55 | 41.83 | 32.32 | 52.92 | |||||||||||||
2022 | 19.52 | 22.61 | 32.68 | 41.77 | 61.71 | 72.73 | 75.74 | 75.35 | 67.60 | 56.87 | 43.37 | 27.45 | 49.78 | |||||||||||||
2023 | 28.52 | 29.50 | 34.42 | 46.60 | 60.16 | 68.20 | 72.48 | 70.77 | 68.73 | 54.97 | 41.57 | 38.35 | 51.19 | |||||||||||||
2024 | 27.10 | 36.59 | 39.03 | 39.71 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.24 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.88 | 27.65 | 37.20 | 48.28 | 62.28 | 71.33 | 77.06 | 75.42 | 67.59 | 54.92 | 40.92 | 29.35 | 50.74 | |||||||||||||
S.D. | 4.27 | 5.03 | 4.27 | 4.83 | 4.94 | 3.63 | 3.13 | 3.06 | 2.62 | 3.68 | 4.23 | 4.14 | 1.66 | |||||||||||||
SKEW | -0.16 | -0.23 | 0.58 | 0.10 | 0.15 | 0.44 | -0.13 | -0.07 | 0.63 | -0.23 | 0.13 | -0.31 | -0.80 | |||||||||||||
MAX | 34.68 | 36.59 | 50.48 | 58.86 | 71.55 | 80.68 | 84.30 | 81.61 | 74.68 | 61.42 | 50.33 | 38.35 | 53.18 | |||||||||||||
MIN | 15.32 | 14.18 | 27.39 | 38.80 | 53.77 | 64.57 | 69.26 | 69.71 | 63.20 | 46.52 | 32.83 | 20.26 | 46.39 | |||||||||||||
YRS | 47 | 45 | 47 | 40 | 45 | 45 | 40 | 38 | 44 | 46 | 40 | 42 | 24 |