YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.55 | 51.03 | 40.86 | c | 31.04 | d | 25.41 | b | 41.38 | g | ||
1942 | 24.46 | e | 22.50 | b | 26.68 | 36.88 | e | 39.68 | c | 49.87 | 58.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.00 | e | |||
1943 | ----- | z | 30.32 | 34.39 | 41.03 | 43.71 | 54.80 | 60.48 | 62.00 | 53.97 | 39.61 | 29.40 | 25.29 | 43.18 | a | |||||||||||
1944 | 22.00 | 25.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.13 | 29.67 | 23.19 | 29.18 | g | |||||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | 39.97 | a | 53.45 | h | 58.47 | p | 61.45 | 43.73 | s | 40.16 | 28.37 | 27.71 | 39.53 | g | ||||
1947 | 19.26 | 28.11 | ----- | z | 33.60 | 45.19 | 49.23 | 59.80 | f | 58.94 | 52.35 | g | 40.10 | 23.56 | n | 20.50 | s | 39.20 | e | |||||||
1948 | 20.14 | b | 26.31 | c | ----- | z | ----- | z | ----- | z | 53.57 | 59.48 | 60.06 | 52.93 | 42.61 | 24.13 | 23.80 | a | 40.34 | c | ||||||
1949 | 24.29 | 25.39 | 30.52 | 38.03 | 42.16 | 50.67 | 60.74 | 57.10 | 54.50 | 40.00 | 30.83 | 22.61 | 39.74 | |||||||||||||
1950 | 21.77 | 27.93 | 30.55 | 37.87 | 39.90 | 49.50 | 60.16 | 54.23 | 47.10 | 43.81 | 30.50 | 25.32 | 39.05 | |||||||||||||
1951 | 21.42 | 27.04 | 28.71 | 36.20 | 44.00 | 46.13 | 61.39 | 61.23 | 51.03 | 41.10 | b | 29.93 | a | 24.71 | 39.41 | |||||||||||
1952 | 27.10 | 25.31 | 27.81 | 38.87 | 44.48 | 51.57 | 58.03 | 59.29 | 49.63 | 38.84 | 28.27 | 22.61 | 39.32 | |||||||||||||
1953 | 25.03 | 24.82 | 33.23 | 36.73 | 36.45 | 52.77 | 61.32 | 57.10 | 47.60 | 38.84 | 29.17 | ----- | z | 40.28 | a | |||||||||||
1954 | 23.45 | 28.50 | 32.35 | 39.67 | 44.16 | 49.47 | 61.58 | 57.55 | 53.13 | 43.19 | 31.27 | 23.06 | 40.62 | |||||||||||||
1955 | 23.48 | 20.61 | 29.10 | 33.67 | 43.10 | 49.07 | 58.16 | 58.87 | 48.27 | 42.45 | 29.87 | 26.61 | 38.60 | |||||||||||||
1956 | 26.52 | 20.90 | 28.58 | 36.17 | 41.74 | 55.43 | 57.94 | 55.67 | a | 49.29 | i | 39.16 | 22.07 | 20.55 | 36.79 | a | ||||||||||
1957 | 29.71 | 36.96 | 35.03 | 37.80 | 44.32 | 51.87 | 62.16 | 59.74 | 48.30 | 42.23 | 28.30 | 25.55 | 41.83 | |||||||||||||
1958 | 22.58 | 30.39 | 31.87 | 35.70 | 46.06 | 55.17 | 58.84 | 59.65 | 56.13 | 43.16 | 29.57 | 22.26 | 40.95 | |||||||||||||
1959 | 22.74 | 27.04 | 28.06 | 40.80 | 41.61 | 57.83 | 60.52 | 60.81 | 48.50 | 41.45 | 31.20 | 28.48 | 40.75 | |||||||||||||
1960 | 24.00 | 25.14 | 33.68 | 37.70 | 42.48 | 56.93 | 59.90 | 60.97 | 53.40 | 42.97 | 32.07 | 24.97 | 41.18 | |||||||||||||
1961 | 26.74 | 27.04 | 32.65 | 37.67 | 40.81 | 53.83 | 60.19 | 61.84 | 52.60 | 41.03 | 32.87 | ----- | z | 42.48 | a | |||||||||||
1962 | 27.00 | 32.25 | 28.48 | 38.67 | 43.10 | ----- | z | 61.32 | 60.10 | 56.40 | 44.94 | 35.80 | 31.74 | 41.80 | a | |||||||||||
1963 | 23.39 | 31.93 | 31.87 | 38.43 | 46.26 | 49.57 | 61.29 | 59.32 | 53.67 | 43.84 | 32.63 | 23.16 | 41.28 | |||||||||||||
1964 | 19.42 | 21.14 | 29.74 | 37.67 | 45.06 | 50.50 | 61.94 | 60.16 | 54.40 | 42.61 | 29.47 | 24.90 | 39.75 | |||||||||||||
1965 | 28.65 | 26.82 | 28.03 | 36.40 | 40.23 | 46.62 | a | 60.48 | 57.58 | 51.93 | 38.39 | 34.67 | 29.10 | 39.91 | ||||||||||||
1966 | 23.26 | 23.82 | 32.58 | 37.47 | 42.10 | 48.00 | ----- | z | 58.48 | f | 52.50 | 40.57 | j | 32.13 | 20.17 | g | 36.48 | d | ||||||||
1967 | 19.93 | a | 26.71 | 32.10 | 32.90 | 38.32 | 52.16 | e | 62.32 | 57.09 | h | 54.04 | b | ----- | z | 29.93 | 22.00 | k | 38.71 | c | ||||||
1968 | ----- | z | 32.61 | f | 30.64 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.38 | d | 38.61 | 29.77 | 20.06 | 33.46 | h | |||
1969 | 27.52 | 24.75 | 26.52 | 35.70 | 44.26 | 47.27 | 59.94 | 59.81 | 51.50 | 38.68 | 29.57 | 26.23 | 39.31 | |||||||||||||
1970 | 21.39 | 28.18 | 30.52 | 32.00 | 41.58 | 51.37 | 61.16 | 59.81 | 50.97 | 36.94 | 25.77 | 24.00 | 38.64 | |||||||||||||
1971 | 20.77 | 24.61 | 28.00 | 35.00 | 39.87 | 50.63 | 60.23 | 57.90 | 51.03 | 40.68 | 31.20 | 25.55 | 38.79 | |||||||||||||
1972 | 21.06 | 23.66 | 34.94 | 33.13 | 42.10 | 53.17 | 58.87 | 57.26 | 50.70 | 45.65 | 26.57 | 22.97 | a | 39.17 | ||||||||||||
1973 | 22.52 | 28.46 | ----- | z | 35.14 | b | 45.29 | 49.27 | ----- | z | 55.36 | c | 48.80 | 36.97 | 26.80 | 21.13 | 36.97 | b | ||||||||
1974 | 27.61 | 21.04 | 33.68 | 36.17 | 43.19 | 53.75 | b | 59.37 | a | 55.42 | 51.29 | b | 42.61 | 29.27 | ----- | z | 41.22 | a | ||||||||
1975 | ----- | z | ----- | z | 31.39 | ----- | z | ----- | z | 50.15 | c | 59.03 | ----- | z | ----- | z | ----- | z | 26.55 | a | 24.52 | 38.33 | g | |||
1976 | 20.23 | a | ----- | z | 28.97 | 35.00 | 44.29 | 50.03 | 57.42 | 56.55 | 52.53 | ----- | z | 28.77 | ----- | z | 41.53 | c | ||||||||
1977 | 26.00 | 27.29 | 26.74 | 37.87 | 41.87 | 53.59 | c | 61.90 | 60.37 | a | 54.07 | 43.60 | a | ----- | z | 28.26 | 41.96 | a | ||||||||
1978 | 29.77 | ----- | z | 36.32 | 37.23 | 42.84 | 52.97 | 59.90 | 56.00 | 51.33 | 43.55 | 35.70 | 25.13 | 42.80 | a | |||||||||||
1979 | 26.29 | 27.43 | 32.42 | 36.53 | 43.55 | 51.13 | 59.45 | b | 55.87 | 52.93 | 40.97 | 27.83 | 25.13 | 39.96 | ||||||||||||
1980 | 30.52 | 31.21 | 32.39 | 37.30 | 42.35 | 52.90 | 60.87 | 58.66 | b | 54.07 | 38.35 | 29.40 | 25.84 | 41.15 | ||||||||||||
1981 | 28.39 | 28.14 | 33.06 | 39.53 | 44.74 | 56.87 | 61.94 | 58.06 | 54.43 | 42.58 | 31.40 | 26.42 | 42.13 | |||||||||||||
1982 | 26.68 | 30.79 | 33.84 | 37.83 | a | 43.90 | a | 47.59 | a | 59.19 | 61.16 | 54.33 | 38.03 | 33.37 | 29.10 | 41.32 | ||||||||||
1983 | 27.19 | 30.57 | 34.26 | 33.73 | 40.90 | 47.97 | 58.03 | 59.87 | 57.27 | 46.48 | 33.60 | 26.94 | 41.40 | |||||||||||||
1984 | 27.32 | 24.90 | 31.29 | 35.73 | 47.23 | a | 54.77 | 59.45 | 59.45 | 52.17 | 41.45 | 30.23 | 29.87 | 41.16 | ||||||||||||
1985 | 27.81 | 27.64 | 34.90 | 40.28 | a | 46.13 | 54.27 | 59.61 | 59.58 | e | 50.40 | 42.93 | a | 31.70 | 25.23 | 41.71 | ||||||||||
1986 | 26.19 | 30.79 | 34.90 | 38.90 | 45.94 | 56.97 | 60.74 | 61.29 | 49.47 | 40.58 | 34.48 | a | 28.77 | 42.42 | ||||||||||||
1987 | 23.10 | 27.77 | b | 30.23 | 40.97 | 45.16 | 56.03 | 58.45 | 58.68 | 50.83 | 46.26 | 30.43 | 24.20 | a | 41.01 | |||||||||||
1988 | 25.48 | 30.72 | 30.06 | 37.77 | 45.10 | 55.20 | 60.06 | 61.23 | 49.97 | 45.65 | 29.23 | 24.03 | 41.21 | |||||||||||||
1989 | 24.42 | 29.86 | 33.06 | 40.73 | 45.87 | 53.53 | 60.97 | 58.10 | 51.13 | 40.74 | 30.14 | a | 21.55 | 40.84 | ||||||||||||
1990 | 22.16 | 26.29 | 34.55 | 40.80 | 42.45 | 56.67 | 60.23 | 56.29 | 56.30 | 40.53 | a | 32.05 | h | 23.77 | 41.82 | a | ||||||||||
1991 | 26.29 | 30.57 | 28.97 | 34.17 | 42.48 | 50.33 | 59.35 | 59.84 | 52.33 | 41.48 | 30.80 | 29.10 | 40.48 | |||||||||||||
1992 | 25.39 | 31.31 | 33.10 | 40.13 | 48.13 | 50.43 | 58.26 | 56.45 | b | 50.67 | 42.00 | 26.33 | 27.13 | 40.78 | ||||||||||||
1993 | 32.52 | 30.21 | 33.61 | 36.37 | 46.45 | 51.80 | 59.06 | 60.73 | a | 49.40 | 40.55 | 29.03 | 24.26 | 41.17 | ||||||||||||
1994 | 21.77 | 26.04 | b | 32.77 | 37.00 | 43.06 | 57.13 | 60.26 | 61.06 | 53.50 | 39.87 | a | 31.50 | 29.39 | 41.11 | |||||||||||
1995 | 26.69 | b | 32.75 | 32.55 | 33.73 | 41.45 | 51.93 | 57.39 | 61.65 | 52.67 | 40.04 | g | 33.07 | 25.58 | 40.86 | a | ||||||||||
1996 | 22.91 | h | 32.55 | 30.07 | a | 38.25 | n | 45.58 | 57.83 | 61.55 | i | 58.77 | 51.87 | 41.15 | d | 31.07 | a | 23.42 | 41.37 | c | ||||||
1997 | 25.00 | a | 26.36 | 31.94 | 37.37 | 48.10 | 51.53 | 59.26 | 60.23 | 57.50 | 38.74 | 31.90 | 24.26 | 41.01 | ||||||||||||
1998 | 24.81 | 27.71 | 31.55 | 30.19 | n | 40.20 | a | 48.81 | c | 62.37 | a | 59.42 | 51.77 | ----- | z | 30.67 | 25.23 | 40.25 | b | |||||||
1999 | 24.58 | 25.04 | 30.48 | b | 33.70 | 42.30 | a | 54.38 | i | 61.45 | 59.97 | 54.00 | 36.88 | g | 30.67 | c | 21.39 | 38.36 | b | |||||||
2000 | 24.03 | 28.04 | b | 32.10 | 37.77 | 49.52 | j | 57.03 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.79 | g | |||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | 32.00 | n | 26.03 | 37.77 | 39.73 | a | 54.67 | 59.45 | 56.52 | 51.38 | a | 39.97 | a | 28.70 | 24.26 | 41.85 | b | |||||||
2003 | 25.90 | 28.11 | 30.19 | 30.83 | 42.10 | 51.00 | 60.81 | 60.16 | 51.60 | 43.06 | 29.93 | 20.87 | 39.55 | |||||||||||||
2004 | 26.52 | 23.17 | 35.65 | 36.07 | 41.58 | 48.17 | 56.45 | 54.40 | a | 47.93 | a | 38.94 | 30.93 | 22.10 | 38.49 | |||||||||||
2005 | 27.77 | 32.29 | 30.29 | 33.55 | a | 42.70 | a | 49.40 | 57.13 | 56.87 | 51.07 | 41.03 | 27.07 | 21.13 | 39.19 | |||||||||||
2006 | 21.81 | 24.75 | 28.94 | 36.30 | 46.16 | 55.03 | 61.19 | 58.71 | 49.57 | 41.68 | 30.33 | 21.61 | 39.67 | |||||||||||||
2007 | 24.74 | 26.81 | a | 31.45 | b | 37.20 | 44.38 | b | 51.39 | b | 58.55 | 59.63 | a | 52.57 | 39.31 | b | 33.60 | 25.16 | 40.40 | |||||||
2008 | 25.00 | 27.79 | 28.13 | a | 31.60 | 39.71 | 49.87 | 59.03 | 57.71 | 49.03 | 39.71 | 29.93 | 27.58 | 38.76 | ||||||||||||
2009 | 25.16 | 24.50 | 30.87 | 33.70 | 45.52 | 50.37 | 59.45 | 56.52 | 49.87 | 39.42 | 29.77 | 22.94 | 39.01 | |||||||||||||
2010 | 24.26 | 27.21 | 28.23 | 35.77 | 37.81 | 48.97 | 59.33 | a | 59.58 | 52.10 | 40.87 | 25.20 | 27.16 | 38.87 | ||||||||||||
2011 | 21.58 | 20.50 | 29.55 | 37.76 | a | 38.38 | g | 48.50 | f | 62.21 | b | 62.39 | 52.76 | a | 40.39 | 28.61 | b | 25.19 | 38.09 | b | ||||||
2012 | 25.37 | a | 25.62 | 29.13 | 36.04 | c | 41.61 | 50.45 | h | 62.12 | e | 62.26 | 52.30 | 38.48 | 33.43 | g | 25.26 | d | 39.82 | b | ||||||
2013 | 22.48 | 23.96 | c | 33.12 | f | 36.65 | d | 42.00 | d | 52.66 | a | 61.40 | f | 59.15 | d | 53.46 | b | 36.37 | a | 32.07 | a | 24.32 | c | 38.31 | b | |
2014 | 23.69 | b | 29.57 | 32.30 | d | 35.83 | a | 40.75 | c | 51.07 | b | 59.58 | g | 56.96 | g | 54.79 | f | 42.33 | g | 28.08 | d | 28.78 | d | 33.76 | d | |
2015 | 25.72 | f | 31.48 | a | 34.58 | e | 34.44 | n | 40.20 | k | 53.70 | j | 60.64 | f | 60.31 | e | 53.79 | a | 44.66 | b | ----- | z | 23.85 | d | 41.44 | f |
2016 | 23.69 | b | 26.28 | d | 31.57 | c | 36.38 | f | 42.38 | j | 53.61 | b | 59.22 | d | 55.76 | f | 51.25 | b | 40.95 | i | 32.62 | d | 27.74 | d | 38.25 | d |
2017 | 26.58 | e | 26.92 | c | 34.53 | a | 36.37 | c | 41.73 | a | 51.68 | b | 60.04 | e | 56.59 | d | 48.97 | a | 39.73 | a | 31.62 | f | 21.87 | a | 40.46 | a |
2018 | 22.92 | f | 28.69 | b | 33.13 | a | 38.14 | a | 42.22 | d | 51.80 | 59.10 | b | 59.21 | b | 52.00 | f | 40.04 | f | 26.82 | b | 25.59 | b | 40.52 | c | |
2019 | 26.69 | b | 25.54 | b | 31.31 | b | 34.87 | 38.56 | f | 47.89 | c | 59.37 | a | 59.67 | g | 52.72 | a | 35.00 | c | 31.92 | d | 25.81 | 37.11 | b | ||
2020 | 25.45 | b | 24.24 | 31.60 | a | 33.07 | b | 41.70 | d | 49.95 | k | 61.17 | b | 60.37 | a | 51.70 | 38.61 | c | 30.08 | d | 21.16 | f | 39.80 | b | ||
2021 | 23.68 | i | 23.29 | g | 33.00 | 35.77 | h | 40.33 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.00 | k | |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | 51.22 | v | 47.06 | l | 59.10 | k | 60.90 | 52.08 | e | 39.97 | 32.47 | 24.88 | n | 46.35 | h | |||
2024 | 23.21 | l | 27.22 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.73 | 27.25 | 31.35 | 36.60 | 42.96 | 51.99 | 59.94 | 58.96 | 51.85 | 41.03 | 30.11 | 25.01 | 40.27 | |||||||||||||
S.D. | 2.78 | 3.26 | 2.46 | 2.36 | 2.43 | 2.97 | 1.39 | 1.99 | 2.39 | 2.43 | 2.54 | 2.53 | 1.10 | |||||||||||||
SKEW | 0.17 | 0.13 | -0.18 | -0.19 | -0.11 | 0.23 | -0.18 | -0.46 | -0.05 | 0.17 | -0.38 | 0.28 | -0.02 | |||||||||||||
MAX | 32.52 | 36.96 | 36.32 | 41.03 | 48.13 | 57.83 | 62.37 | 62.39 | 57.50 | 46.48 | 35.80 | 31.74 | 42.42 | |||||||||||||
MIN | 19.26 | 20.50 | 26.03 | 30.83 | 36.45 | 46.13 | 56.45 | 54.23 | 45.38 | 35.00 | 22.07 | 20.06 | 38.49 | |||||||||||||
YRS | 69 | 71 | 71 | 68 | 68 | 68 | 66 | 69 | 70 | 67 | 71 | 68 | 41 |