YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.57 | w | 39.71 | 29.86 | b | 24.32 | 31.30 | i | ||
1940 | 20.65 | 24.86 | a | 31.87 | 35.24 | a | 46.77 | a | 54.03 | 59.21 | c | 55.97 | a | 51.13 | 39.97 | a | 27.96 | d | 24.31 | b | 39.33 | |||||
1941 | 23.48 | 26.93 | 28.77 | a | 33.93 | c | 48.29 | 52.88 | d | 58.12 | g | 58.14 | b | 52.08 | e | 42.96 | f | 29.84 | e | 25.42 | g | 39.37 | c | |||
1942 | 22.70 | a | 18.48 | c | 23.92 | g | 38.00 | a | 42.52 | f | 52.48 | c | 58.50 | c | 57.88 | e | 50.16 | e | 40.73 | e | 29.14 | b | 24.36 | f | 40.90 | c |
1943 | 22.00 | c | 22.35 | h | 28.23 | e | 38.89 | c | 45.15 | d | 55.00 | c | 59.03 | a | 59.00 | i | 50.62 | f | 38.85 | d | 24.33 | c | 18.41 | b | 36.66 | c |
1944 | 14.68 | 24.52 | 24.23 | 33.27 | 41.90 | 53.87 | 59.68 | 58.94 | 51.27 | 43.30 | a | 29.13 | 21.10 | 37.99 | ||||||||||||
1945 | 22.13 | 24.64 | 26.84 | 32.90 | 44.65 | 48.63 | 58.03 | 60.06 | 52.00 | 39.81 | 25.07 | 18.55 | 37.78 | |||||||||||||
1946 | 19.17 | a | 19.57 | 28.42 | 41.43 | 41.53 | l | 55.30 | 58.79 | c | 59.00 | l | 54.92 | e | 40.19 | d | 26.22 | g | 26.32 | f | 39.72 | d | ||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.43 | x | 61.19 | d | 54.85 | c | 43.44 | f | 25.96 | f | 20.14 | b | 45.39 | i |
1948 | 16.82 | i | 24.56 | d | 25.52 | d | 39.12 | d | 48.61 | 56.58 | r | 61.06 | m | 60.04 | f | 54.07 | 41.29 | c | 22.42 | d | 24.60 | f | 36.51 | e | ||
1949 | 21.23 | 22.71 | 30.35 | e | 36.32 | e | 46.21 | b | 55.67 | 61.39 | c | 59.29 | c | 54.73 | 39.97 | 30.68 | b | 21.10 | b | 39.97 | ||||||
1950 | 23.50 | a | 26.09 | f | 29.86 | c | 37.78 | g | 45.35 | e | 57.04 | b | 60.20 | f | 57.31 | e | 50.73 | d | 46.07 | b | 27.63 | c | 22.53 | a | 40.00 | c |
1951 | 20.08 | e | 22.61 | 28.00 | f | 36.27 | 48.58 | 54.50 | f | 64.44 | f | 62.28 | b | 54.00 | h | 41.57 | c | 26.93 | c | 23.53 | a | 35.23 | d | |||
1952 | 26.45 | b | 23.44 | d | 27.83 | h | 40.27 | 46.71 | c | 60.07 | 61.45 | b | 61.71 | c | 53.32 | b | 40.68 | 25.65 | d | 20.60 | a | 41.85 | a | |||
1953 | 24.45 | 20.00 | 32.11 | d | 37.16 | e | 43.14 | c | 55.33 | c | 61.73 | e | 58.03 | a | 49.53 | 37.48 | 26.34 | a | 12.71 | c | 38.17 | |||||
1954 | 19.71 | c | 23.41 | a | 30.19 | e | 39.30 | c | 45.65 | 55.45 | a | 63.16 | 58.90 | a | 55.53 | 44.31 | e | 28.29 | b | 19.97 | 40.32 | |||||
1955 | 20.03 | b | 17.00 | 28.63 | a | 34.93 | 45.72 | b | 52.89 | c | 60.29 | ----- | z | 54.50 | d | 42.77 | a | 29.38 | a | 24.97 | a | 37.37 | a | |||
1956 | 25.28 | b | 17.71 | a | 26.32 | c | 34.25 | b | 47.90 | a | 59.21 | a | 60.00 | c | 58.27 | a | 54.27 | 43.47 | a | 23.61 | b | 20.63 | d | 39.24 | ||
1957 | 29.83 | b | 34.77 | b | 32.19 | e | 39.13 | 46.90 | a | 57.38 | a | 63.47 | a | 60.45 | 49.50 | b | 41.03 | b | 27.14 | a | ----- | z | 43.80 | a | ||
1958 | ----- | z | 30.43 | u | 30.07 | a | 38.80 | 49.97 | b | 60.41 | a | 60.48 | 60.97 | a | 54.04 | c | 42.26 | 29.10 | a | 22.43 | a | 44.85 | b | |||
1959 | 20.13 | a | 23.00 | 27.41 | b | 40.41 | a | 46.79 | b | 59.50 | 60.63 | a | 59.97 | a | 49.82 | b | 39.68 | 25.18 | b | 25.10 | a | 39.80 | ||||
1960 | 19.00 | 19.83 | 30.57 | a | 37.20 | 44.03 | 57.67 | 59.67 | a | 59.90 | 53.76 | a | 40.81 | 31.62 | a | 20.47 | a | 39.54 | ||||||||
1961 | 19.65 | 24.63 | a | 31.42 | 36.77 | 46.97 | a | 57.80 | 61.03 | 60.29 | 50.60 | 40.52 | 29.13 | 23.45 | 40.19 | |||||||||||
1962 | 19.13 | 28.64 | 25.90 | a | 39.69 | a | 45.61 | 53.50 | d | 60.61 | 58.40 | a | 53.23 | 42.00 | a | 33.24 | a | 25.68 | 40.47 | |||||||
1963 | 16.71 | 26.33 | a | 29.13 | 39.34 | a | 48.10 | a | 54.27 | 62.32 | 59.97 | 55.55 | a | 45.45 | 31.41 | c | 19.50 | a | 40.67 | |||||||
1964 | 14.90 | a | 16.18 | a | 26.43 | c | 37.70 | c | 47.19 | 54.30 | 63.30 | a | 59.88 | e | 55.57 | 42.87 | a | 30.27 | 23.26 | 39.32 | ||||||
1965 | 24.52 | 21.93 | 26.80 | a | 38.62 | a | 46.59 | b | 55.23 | 62.94 | 60.00 | 53.93 | 40.73 | a | 34.86 | a | 25.90 | 41.00 | ||||||||
1966 | 18.77 | 19.75 | 29.81 | 38.30 | 47.52 | b | 55.03 | a | 63.29 | 58.90 | b | 51.62 | a | 38.67 | a | 32.53 | 20.10 | 39.52 | ||||||||
1967 | 16.94 | 24.07 | a | 33.70 | a | 40.73 | 43.83 | b | 56.25 | b | 63.10 | 58.16 | 51.79 | b | 40.90 | 30.47 | 21.61 | 40.13 | ||||||||
1968 | 22.13 | 27.86 | 31.29 | 35.23 | 45.00 | b | 55.93 | a | 59.76 | b | 57.00 | 49.21 | a | 42.10 | 29.71 | b | 19.90 | 39.59 | ||||||||
1969 | 28.03 | b | 24.80 | c | 24.96 | c | 40.50 | 46.61 | 54.62 | a | 64.19 | 61.45 | 53.73 | d | 41.77 | a | 27.89 | b | 25.10 | 41.14 | ||||||
1970 | 19.14 | b | 28.12 | c | 26.45 | 32.47 | 43.81 | 54.69 | a | 61.76 | b | 59.45 | 50.77 | 35.10 | 27.87 | 22.83 | b | 38.54 | ||||||||
1971 | 18.86 | c | 23.04 | 27.74 | 33.83 | a | 43.73 | a | 54.24 | a | 62.19 | 58.06 | 50.62 | a | 40.71 | 30.28 | a | 23.19 | 38.87 | |||||||
1972 | 20.19 | 22.69 | 32.78 | d | 36.13 | 43.74 | 54.50 | 60.84 | 59.13 | 52.55 | a | 44.97 | 27.70 | 22.32 | 39.80 | |||||||||||
1973 | 20.19 | 25.79 | 29.93 | b | 31.37 | 43.67 | a | 50.97 | 58.90 | a | 56.58 | 50.13 | 39.84 | 29.68 | b | 19.62 | b | 38.06 | ||||||||
1974 | 21.39 | 18.96 | 33.27 | a | 34.27 | 46.74 | 56.07 | 59.77 | 57.97 | a | 51.00 | c | 44.81 | 28.67 | c | 19.19 | 39.34 | |||||||||
1975 | 22.10 | 25.57 | 29.16 | 34.00 | 40.77 | 52.43 | 58.48 | b | 57.77 | 50.70 | 39.00 | a | 26.93 | c | 22.52 | 38.29 | ||||||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.50 | o | 54.69 | a | 39.43 | a | 31.24 | a | 22.46 | c | 36.96 | h |
1983 | 22.62 | b | 26.59 | a | 31.59 | d | 30.42 | d | 40.68 | i | 52.11 | b | 59.22 | h | 60.00 | f | 56.72 | a | 43.34 | b | 31.79 | f | 23.92 | e | 35.92 | d |
1984 | 22.61 | c | 20.59 | 27.57 | c | 32.37 | 48.46 | c | 53.81 | c | 58.36 | c | 57.52 | d | 50.27 | d | 38.75 | c | 30.85 | c | 25.15 | e | 38.86 | |||
1985 | 20.65 | 23.07 | 33.76 | b | 36.96 | d | 44.62 | b | 52.27 | d | 57.46 | g | 57.47 | a | 48.73 | d | 40.85 | e | 30.17 | 23.43 | j | 38.85 | b | |||
1986 | 23.86 | b | 28.74 | a | 34.36 | i | 33.44 | c | 40.27 | i | 54.24 | a | 56.45 | b | 60.20 | f | 51.93 | 38.74 | 28.78 | c | 22.95 | j | 39.52 | d | ||
1987 | 16.76 | b | 24.10 | h | 27.59 | b | 33.09 | h | 45.96 | e | 52.68 | e | 57.00 | j | 59.00 | i | 50.67 | f | 42.19 | e | 28.04 | c | 16.83 | h | 35.54 | f |
1988 | 20.24 | b | 23.74 | f | 27.21 | g | 34.35 | d | 44.92 | f | 55.16 | e | 58.70 | h | 59.82 | c | 47.42 | f | 43.03 | b | 28.75 | b | 18.71 | g | 40.23 | f |
1989 | 20.11 | c | 28.48 | e | 30.92 | e | 40.11 | l | 46.15 | d | 53.38 | i | 58.54 | c | 58.59 | b | 48.88 | e | 38.68 | 26.10 | a | 16.71 | c | 37.32 | b | |
1990 | 17.83 | b | 21.78 | e | 30.54 | e | 38.32 | b | 42.54 | c | 57.79 | b | 57.85 | d | 55.25 | g | 53.89 | b | 37.54 | c | 28.63 | c | 19.93 | d | 36.97 | a |
1991 | 19.52 | b | 24.67 | a | 24.04 | g | 34.28 | a | 42.59 | b | 49.35 | d | 58.52 | f | 57.64 | i | 51.89 | b | 39.00 | i | 27.18 | b | 24.12 | e | 34.20 | d |
1992 | 19.14 | b | 27.56 | d | 28.93 | b | 39.26 | c | 46.68 | c | 50.26 | g | 57.38 | e | 57.86 | b | 50.32 | b | 44.17 | b | 24.11 | c | 19.39 | 37.71 | a | |
1993 | 26.96 | d | 26.00 | d | 28.76 | b | 36.18 | b | 44.15 | d | 55.69 | d | 61.19 | o | 57.79 | l | 50.36 | e | 37.68 | 25.70 | c | 19.09 | i | 36.83 | c | |
1994 | 18.90 | 19.96 | c | 32.32 | c | 38.00 | a | 48.38 | e | 59.61 | b | 60.93 | c | 62.56 | f | 53.59 | c | 39.73 | e | 32.90 | 26.42 | 39.16 | a | |||
1995 | 23.53 | a | 31.39 | 34.71 | 34.97 | 45.32 | f | 53.18 | b | 58.87 | 61.81 | 53.13 | 40.68 | 30.53 | 24.32 | 40.65 | a | |||||||||
1996 | 23.16 | 30.64 | a | 27.73 | e | 36.77 | 47.77 | 58.10 | a | 62.08 | g | 59.27 | e | 49.50 | b | 40.48 | 30.17 | g | 22.74 | 39.62 | b | |||||
1997 | 20.58 | 25.25 | 30.15 | d | 37.00 | b | 47.55 | 54.87 | 60.42 | 59.48 | d | 55.32 | b | 38.45 | b | 28.00 | c | 20.35 | h | 41.55 | a | |||||
1998 | 23.26 | 25.54 | 29.67 | a | 32.83 | 45.65 | 52.73 | d | 59.53 | a | 59.36 | f | 53.53 | 42.81 | 30.77 | d | 25.45 | b | 38.34 | a | ||||||
1999 | 23.68 | c | 26.36 | c | 31.77 | a | 35.80 | ----- | z | 53.37 | 60.50 | c | 58.14 | c | 51.14 | a | 39.23 | a | 31.69 | a | 19.38 | e | 39.19 | a | ||
2000 | 23.93 | b | 29.21 | 31.90 | 38.24 | a | 49.97 | a | 57.35 | d | 61.90 | b | 60.72 | f | 52.92 | d | 43.75 | g | 24.96 | d | 22.67 | d | 39.30 | b | ||
2001 | 20.74 | 26.33 | d | 31.07 | b | 39.60 | 45.67 | d | 55.52 | i | 61.42 | 59.10 | 52.90 | 43.55 | 34.26 | c | 20.96 | d | 39.60 | a | ||||||
2002 | 23.61 | 22.57 | 28.57 | a | 40.77 | 46.54 | c | 59.04 | c | 60.27 | a | 59.22 | d | 54.27 | 40.23 | a | 29.19 | d | 20.59 | i | 42.21 | a | ||||
2003 | 25.14 | c | 27.43 | 30.55 | 38.21 | a | 47.57 | a | 54.76 | a | 64.71 | 60.13 | 52.10 | 45.94 | 32.63 | c | 22.27 | i | 43.56 | a | ||||||
2004 | 22.07 | b | 22.24 | 35.23 | 36.77 | 47.57 | c | 51.93 | b | 59.42 | 56.55 | 52.46 | d | 40.93 | c | 30.21 | f | 21.06 | 40.57 | a | ||||||
2005 | 28.84 | 31.21 | 29.46 | e | 36.93 | a | 48.24 | b | 54.00 | e | 61.90 | a | 58.81 | 53.83 | l | 43.61 | 31.00 | 22.42 | 40.58 | a | ||||||
2006 | 21.96 | e | 26.18 | 34.00 | f | 43.23 | 50.42 | 60.97 | 63.68 | 58.91 | h | 49.57 | 38.90 | 30.40 | 20.00 | 40.53 | b | |||||||||
2007 | 21.23 | 26.43 | 30.61 | 37.17 | 44.87 | 55.70 | 60.55 | 61.35 | 55.37 | 41.71 | 31.97 | 23.55 | 40.87 | |||||||||||||
2008 | 20.67 | a | 24.86 | 29.32 | 35.23 | 45.16 | 57.07 | 60.71 | 59.68 | 51.67 | 40.68 | 30.37 | 25.93 | a | 40.11 | |||||||||||
2009 | 23.55 | 26.93 | 32.84 | 36.57 | 50.10 | 54.87 | 62.00 | 59.39 | m | 52.68 | b | 41.35 | 31.23 | 21.71 | 39.44 | a | ||||||||||
2010 | 20.97 | 25.07 | 28.65 | 40.17 | 46.52 | 57.23 | 61.03 | 61.00 | 55.07 | 44.00 | 28.07 | 27.55 | 41.28 | |||||||||||||
2011 | 17.26 | 20.04 | b | 33.32 | 39.63 | 44.74 | 56.34 | a | 62.58 | 62.45 | 53.60 | 41.48 | 31.23 | 21.60 | a | 40.36 | ||||||||||
2012 | 23.35 | 25.83 | 29.97 | 39.80 | 48.26 | 57.14 | a | 60.90 | 60.10 | 53.03 | ----- | z | ----- | z | 20.31 | e | 41.87 | b | ||||||||
2013 | 19.33 | a | 21.68 | ----- | z | 38.70 | 47.23 | 61.13 | 61.64 | c | 59.93 | p | 55.30 | 38.35 | 30.90 | 22.97 | 39.72 | b | ||||||||
2014 | 20.58 | 28.32 | 33.10 | 38.67 | 46.39 | 58.60 | 62.71 | 59.29 | 56.72 | a | 43.74 | 28.60 | 25.65 | 41.86 | ||||||||||||
2015 | 24.06 | 26.00 | a | 34.21 | b | 36.63 | k | 45.55 | 59.93 | 60.16 | 61.00 | 55.00 | 46.97 | 32.07 | 24.71 | 42.70 | a | |||||||||
2016 | 21.74 | 26.03 | 33.30 | a | 37.50 | 45.06 | 58.17 | a | 61.71 | j | 58.39 | 55.17 | 44.84 | 34.40 | 25.23 | 39.98 | a | |||||||||
2017 | 27.07 | a | 29.18 | 35.97 | 38.43 | 47.55 | 58.27 | 61.39 | 59.74 | 54.10 | 44.19 | 36.47 | 26.16 | 43.21 | ||||||||||||
2018 | 23.77 | 31.50 | 33.52 | 40.59 | a | 51.29 | 60.28 | e | 62.42 | 61.23 | 56.00 | 44.26 | 27.20 | 23.19 | 42.94 | |||||||||||
2019 | 22.03 | 25.61 | 34.60 | f | 37.62 | n | 44.39 | ----- | z | 59.12 | n | 61.34 | b | 56.68 | e | 40.26 | 30.13 | 24.06 | 38.06 | d | ||||||
2020 | 23.35 | 25.14 | 36.06 | 40.33 | 49.61 | 55.93 | a | 63.39 | 62.68 | 51.46 | b | 41.55 | 34.77 | 20.77 | 42.09 | |||||||||||
2021 | 21.74 | 23.04 | 32.81 | 38.10 | 45.47 | a | 59.77 | 61.97 | 59.30 | d | 54.29 | i | 44.45 | 32.57 | 25.55 | b | 40.43 | a | ||||||||
2022 | 21.74 | 19.43 | 29.87 | 42.18 | b | 47.96 | c | 58.31 | a | 65.77 | 61.52 | d | 54.07 | 42.23 | 25.70 | 22.84 | 40.97 | |||||||||
2023 | 24.48 | 26.21 | 33.48 | 38.87 | 55.26 | 55.33 | c | 65.90 | 65.55 | 58.59 | a | 44.77 | 34.24 | a | 27.11 | c | 44.15 | |||||||||
2024 | 26.42 | 28.67 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.54 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.74 | 24.70 | 30.30 | 37.22 | 46.44 | 55.71 | 61.00 | 59.52 | 52.83 | 41.45 | 29.39 | 22.44 | 40.11 | |||||||||||||
S.D. | 3.00 | 3.68 | 2.72 | 2.73 | 2.37 | 2.74 | 1.98 | 1.73 | 2.24 | 2.37 | 2.88 | 2.70 | 1.50 | |||||||||||||
SKEW | 0.23 | -0.03 | -0.00 | -0.32 | 0.58 | -0.04 | 0.21 | 0.61 | 0.10 | 0.10 | -0.02 | -0.63 | 0.72 | |||||||||||||
MAX | 29.83 | 34.77 | 36.06 | 43.23 | 55.26 | 61.13 | 65.90 | 65.55 | 58.59 | 46.97 | 36.47 | 27.55 | 44.15 | |||||||||||||
MIN | 14.68 | 16.18 | 24.23 | 30.42 | 40.77 | 48.63 | 56.45 | 55.97 | 48.73 | 35.10 | 22.42 | 12.71 | 37.78 | |||||||||||||
YRS | 75 | 72 | 67 | 71 | 69 | 70 | 63 | 61 | 72 | 74 | 73 | 66 | 35 |