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 | 51.52 | 41.25 | 34.84 | 42.53 | i | |||
1938 | 31.55 | 29.63 | a | 34.60 | a | 45.35 | 50.95 | 62.92 | 69.61 | 69.85 | 63.63 | 47.87 | a | 33.06 | l | 31.90 | 48.90 | a | ||||||||
1939 | 28.90 | 22.39 | a | 36.35 | 47.46 | d | 54.45 | 60.71 | a | 71.97 | 70.65 | 60.00 | 47.77 | 41.55 | 37.24 | 48.29 | ||||||||||
1940 | 31.26 | 33.22 | 39.82 | 45.05 | 58.82 | 67.10 | 73.56 | 72.71 | 58.40 | 51.08 | 35.00 | 33.32 | 49.95 | |||||||||||||
1941 | 31.05 | 38.63 | b | ----- | z | 41.14 | w | 54.50 | 61.10 | 71.68 | 65.94 | 55.03 | 42.84 | 39.82 | 31.13 | 49.17 | b | |||||||||
1942 | 28.50 | a | 27.98 | a | 34.08 | 44.25 | 48.20 | a | 62.28 | 75.19 | 71.16 | 62.93 | 49.37 | a | 38.75 | 35.62 | b | 48.19 | ||||||||
1943 | 30.10 | 33.41 | a | 37.92 | 49.21 | a | 51.92 | 57.97 | 71.08 | 70.06 | 63.78 | 50.23 | 38.60 | a | 30.78 | d | 48.75 | |||||||||
1944 | 24.81 | 25.86 | 32.19 | 39.38 | 52.84 | 56.88 | ----- | z | ----- | z | ----- | z | 52.57 | x | 33.67 | c | 30.42 | 37.01 | d | |||||||
1945 | 31.10 | 32.08 | d | 30.86 | x | ----- | z | 51.81 | g | 55.65 | 70.48 | 66.97 | 57.40 | a | 49.50 | 36.52 | 28.11 | 47.53 | c | |||||||
1946 | 27.68 | 29.48 | b | 36.55 | 46.93 | 50.00 | 63.33 | 69.92 | 68.85 | 58.83 | 39.60 | 33.87 | g | 34.38 | b | 47.78 | a | |||||||||
1947 | 24.41 | n | 35.77 | q | 40.77 | a | 43.18 | 56.55 | 58.97 | 71.29 | 68.27 | 62.65 | 50.56 | 31.48 | 29.14 | f | 53.75 | c | ||||||||
1948 | 30.72 | a | 28.20 | a | 28.02 | a | 43.63 | 52.03 | 60.73 | b | 71.29 | 70.05 | 62.03 | a | 48.93 | c | 32.55 | a | 26.52 | e | 46.23 | |||||
1949 | 13.02 | j | ----- | z | 33.50 | h | 47.02 | f | 50.56 | f | 60.30 | c | 67.48 | a | 65.76 | d | 60.35 | 41.38 | j | ----- | z | ----- | z | 63.47 | h | |
1950 | ----- | z | ----- | z | 35.90 | u | 41.77 | b | 45.30 | a | 56.36 | a | 63.83 | a | ----- | z | 53.28 | a | 49.24 | l | 36.14 | b | 30.46 | d | 46.73 | e |
1951 | 24.42 | 33.36 | 33.44 | 45.78 | 47.14 | i | 62.17 | o | 67.11 | v | 67.76 | d | 63.47 | 47.29 | 35.70 | 27.02 | 42.03 | c | ||||||||
1952 | 26.94 | 29.83 | 29.52 | 44.80 | 54.26 | 61.23 | 70.11 | 71.16 | 63.20 | 56.24 | 31.77 | 30.39 | 47.45 | |||||||||||||
1953 | 38.35 | 32.98 | 38.87 | 43.02 | 45.89 | 61.23 | 72.98 | 68.27 | a | 64.52 | 48.71 | 40.69 | a | 29.93 | b | 48.79 | ||||||||||
1954 | 31.31 | 36.68 | 32.15 | 48.18 | 56.23 | 59.48 | 72.13 | 67.35 | 59.90 | 49.84 | 41.45 | 29.13 | a | 48.65 | ||||||||||||
1955 | 23.48 | 24.57 | 33.40 | 40.07 | 51.02 | 62.05 | 69.03 | 70.81 | 62.82 | 51.69 | 36.68 | 35.16 | 46.73 | |||||||||||||
1956 | 35.07 | a | 26.69 | 39.60 | a | 44.17 | 54.13 | 66.47 | 71.39 | 68.58 | 65.58 | 48.92 | 36.15 | 32.52 | 49.10 | |||||||||||
1957 | 25.35 | 38.14 | 38.50 | 43.70 | 49.74 | 64.05 | 71.18 | 71.74 | 62.33 | 46.39 | 31.40 | 34.87 | 48.12 | |||||||||||||
1958 | 31.98 | 37.50 | 32.78 | a | 41.60 | 58.79 | 65.53 | 71.39 | 72.02 | 62.23 | 53.08 | 39.28 | 38.65 | 50.40 | ||||||||||||
1959 | 32.47 | a | 30.39 | 38.23 | 48.27 | 49.98 | 67.33 | 74.00 | 69.76 | 58.15 | 50.92 | 39.70 | 31.74 | 49.24 | ||||||||||||
1960 | 25.00 | 26.90 | 41.05 | 46.68 | 54.18 | 66.92 | 73.68 | 70.27 | 64.72 | a | 48.94 | 37.43 | 31.15 | 48.91 | ||||||||||||
1961 | 32.89 | 33.89 | 36.39 | 45.03 | 54.37 | 68.38 | 73.61 | 69.24 | 57.03 | 46.97 | 33.88 | 28.34 | 48.34 | |||||||||||||
1962 | 27.60 | 32.75 | 31.37 | a | 50.48 | a | 51.23 | a | 62.85 | 69.85 | 70.24 | 63.93 | 52.11 | 42.21 | a | 33.82 | a | 49.04 | ||||||||
1963 | 27.11 | 39.04 | 34.61 | 39.43 | b | 56.66 | 56.28 | 72.06 | 69.58 | 63.40 | 54.34 | 38.72 | 31.45 | 48.56 | ||||||||||||
1964 | 27.00 | a | 27.00 | 30.84 | 41.22 | 50.89 | 58.92 | 73.63 | 68.61 | 59.45 | 53.10 | 34.52 | 29.50 | a | 46.22 | |||||||||||
1965 | 31.22 | a | 32.38 | 33.90 | a | 43.66 | a | 49.27 | a | 59.17 | a | 69.22 | a | 65.30 | a | 53.58 | 53.08 | 41.37 | 31.61 | 46.98 | ||||||
1966 | 27.31 | 27.23 | 39.05 | 46.76 | a | 58.10 | 63.57 | 73.79 | 70.56 | 62.10 | 48.98 | 40.53 | a | 29.45 | 48.95 | |||||||||||
1967 | 31.55 | 34.38 | 39.90 | 36.80 | 50.73 | 56.25 | 72.18 | 71.87 | 60.87 | 51.76 | 41.70 | 25.55 | 47.79 | |||||||||||||
1968 | 30.57 | a | 36.16 | 38.94 | 40.28 | 52.27 | a | 63.73 | 70.48 | 62.71 | 58.90 | 48.45 | 36.10 | 28.35 | 47.25 | |||||||||||
1969 | 34.08 | a | 27.98 | a | 32.73 | 44.55 | 58.87 | 58.64 | a | 70.37 | a | 72.74 | 63.83 | 42.55 | 37.63 | 33.06 | 48.09 | |||||||||
1970 | 31.77 | 37.29 | 34.98 | 38.32 | 53.82 | 61.25 | 69.65 | 72.18 | 57.17 | a | 46.53 | 38.95 | 28.60 | 47.54 | ||||||||||||
1971 | 31.42 | a | 31.66 | 36.85 | 42.73 | 48.92 | 62.23 | 71.03 | 69.37 | 56.03 | 43.72 | a | 33.93 | 24.52 | 46.04 | |||||||||||
1972 | 29.21 | 35.17 | 44.00 | 43.80 | 54.38 | a | 63.12 | a | 71.55 | a | 66.98 | 56.93 | 45.65 | 32.33 | a | 25.26 | 47.37 | |||||||||
1973 | 26.17 | a | 30.23 | 31.23 | 41.22 | 56.37 | 64.07 | a | 69.05 | 70.09 | d | 58.36 | a | 50.00 | a | 36.77 | 32.80 | a | 47.20 | |||||||
1974 | 27.74 | 30.61 | a | 41.18 | 43.26 | a | 57.67 | a | 68.43 | a | 71.05 | 68.98 | a | 63.55 | a | 47.95 | a | 37.96 | b | 27.32 | 48.81 | |||||
1975 | 30.00 | a | 30.02 | b | 31.62 | a | 35.55 | a | 49.79 | 59.93 | 71.12 | a | 67.89 | 61.95 | 48.61 | 35.03 | a | 33.55 | 46.26 | |||||||
1976 | 30.81 | 35.07 | 32.55 | 42.60 | 57.03 | 63.55 | 73.02 | 66.34 | 59.70 | 47.73 | a | 40.78 | 33.02 | 48.52 | ||||||||||||
1977 | 27.82 | 35.70 | 32.90 | 49.05 | 48.31 | 67.30 | 71.10 | 68.63 | 61.87 | 52.60 | 40.85 | 36.37 | 49.37 | |||||||||||||
1978 | 31.37 | 33.65 | b | 42.00 | 42.52 | 50.71 | 62.98 | 72.33 | a | 68.95 | b | 58.77 | 53.44 | 33.63 | 25.00 | a | 47.95 | |||||||||
1979 | 21.82 | 30.95 | 36.45 | 45.08 | 54.02 | 64.10 | 72.35 | 68.15 | 66.08 | 53.03 | 32.90 | 35.40 | a | 48.36 | ||||||||||||
1980 | 30.19 | 35.12 | 34.06 | 45.15 | 48.18 | 62.15 | 72.06 | 69.26 | 60.35 | 49.48 | 40.80 | 38.19 | 48.75 | |||||||||||||
1981 | 32.27 | 34.04 | 36.55 | 47.57 | 51.84 | 67.10 | 73.24 | 73.13 | 63.07 | a | 44.50 | 41.22 | 36.20 | a | 50.06 | |||||||||||
1982 | 28.29 | b | 31.50 | 35.05 | a | 42.24 | a | 52.20 | a | 61.77 | d | 68.60 | 70.98 | b | 57.12 | a | 45.02 | c | 33.76 | a | 28.35 | 46.24 | ||||
1983 | 33.42 | 33.71 | 37.87 | a | 37.77 | 50.92 | 60.91 | b | 69.38 | a | 66.93 | b | 62.09 | a | 50.69 | 37.63 | 30.13 | a | 47.62 | |||||||
1984 | 27.42 | 31.10 | 36.05 | 41.85 | 57.69 | 61.33 | 70.26 | b | 68.50 | b | 62.28 | a | 42.87 | 37.18 | 27.85 | a | 47.03 | |||||||||
1985 | 25.45 | 27.98 | 35.52 | a | 50.42 | 55.53 | 67.16 | a | 71.95 | 70.23 | 56.25 | 49.27 | c | 33.68 | 32.28 | a | 47.98 | |||||||||
1986 | 36.84 | b | 36.38 | 43.73 | 45.52 | 54.43 | a | 68.26 | c | 69.25 | a | 72.45 | a | 54.65 | 46.44 | 39.30 | 31.50 | b | 49.90 | |||||||
1987 | 27.28 | b | 31.45 | 36.58 | a | ----- | z | ----- | z | ----- | z | ----- | z | 68.82 | a | 61.54 | d | 53.40 | 35.73 | 27.75 | a | 42.82 | d | |||
1988 | 27.19 | 33.81 | 37.85 | 47.19 | a | 53.45 | 67.52 | 74.53 | 69.28 | a | 59.98 | 56.26 | 37.30 | 26.87 | 49.27 | |||||||||||
1989 | 26.29 | 26.54 | 43.39 | 51.10 | a | 55.23 | a | 62.47 | 74.55 | 67.76 | 60.29 | a | 49.35 | 39.97 | 32.69 | 49.14 | ||||||||||
1990 | 32.06 | 28.09 | 39.92 | 49.05 | a | 52.27 | a | 64.55 | a | 72.53 | a | 69.34 | 64.67 | 50.61 | 37.80 | 22.65 | 48.63 | |||||||||
1991 | 28.94 | 39.36 | 35.69 | 43.38 | 49.15 | 61.90 | 72.37 | 70.05 | 60.28 | 51.50 | 36.15 | 30.18 | 48.25 | |||||||||||||
1992 | 29.95 | 35.90 | 40.71 | 52.02 | 59.37 | ----- | z | 68.74 | 70.82 | a | 62.13 | 53.32 | 32.95 | 27.13 | 48.46 | a | ||||||||||
1993 | 26.87 | 27.52 | 40.42 | 45.70 | 56.92 | 60.32 | 68.15 | a | 67.81 | 61.20 | 48.50 | 34.25 | b | 29.79 | 47.29 | |||||||||||
1994 | 34.18 | a | 30.54 | 41.92 | 46.55 | a | 56.34 | 68.47 | a | 73.84 | 72.47 | a | 63.32 | 47.08 | 30.93 | a | 31.47 | 49.76 | ||||||||
1995 | 30.35 | 41.12 | 38.06 | 44.29 | a | 48.44 | 57.19 | a | 69.61 | 71.40 | 64.56 | f | 52.13 | d | 44.43 | g | 40.71 | n | 50.29 | c | ||||||
1996 | 33.63 | d | 35.71 | 39.76 | 46.90 | 55.40 | 66.96 | b | 74.18 | c | 72.11 | c | 60.48 | a | 50.16 | b | 39.40 | 33.74 | 50.70 | |||||||
1997 | ----- | z | 30.37 | a | 42.89 | d | 42.18 | 59.04 | e | 63.07 | a | 68.45 | 71.40 | ----- | z | ----- | z | ----- | z | ----- | z | 53.91 | e | |||
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.93 | a | 60.57 | a | 45.65 | 38.86 | a | 28.64 | b | 49.13 | g | |
1999 | 33.97 | a | 34.25 | 40.61 | 37.38 | d | 50.83 | a | 62.84 | a | 71.40 | a | 68.00 | 58.68 | b | 53.52 | b | 45.90 | a | 31.87 | a | 49.10 | ||||
2000 | 34.53 | a | 36.16 | 38.15 | 49.62 | b | 57.45 | c | 66.47 | a | 74.05 | a | 71.37 | 60.27 | 47.38 | a | 28.81 | a | 33.73 | a | 49.83 | |||||
2001 | 28.66 | b | 29.75 | 39.70 | a | 42.92 | 59.03 | b | 65.82 | 71.80 | a | 72.22 | a | 65.16 | e | 53.52 | 39.07 | b | 27.47 | a | 49.59 | |||||
2002 | 28.60 | 29.96 | a | 34.87 | 47.43 | a | 53.65 | a | 67.02 | 75.48 | 70.31 | b | 61.68 | b | 46.18 | a | 35.90 | 30.82 | 48.49 | |||||||
2003 | 38.22 | a | 29.59 | 38.67 | a | 41.73 | b | 53.87 | a | 65.26 | a | 76.94 | 72.23 | a | 61.69 | a | 56.19 | 32.03 | 31.39 | d | 49.82 | |||||
2004 | 27.84 | c | 27.93 | a | 43.25 | c | 45.34 | b | 55.47 | b | 65.48 | a | 71.50 | 66.68 | c | 58.78 | c | 47.70 | a | 33.86 | b | 31.52 | c | 47.94 | ||
2005 | 31.79 | b | 30.50 | 37.27 | 42.07 | 51.88 | a | 58.30 | b | 74.16 | 68.53 | a | 59.21 | a | 48.57 | a | 40.02 | 32.95 | c | 47.94 | ||||||
2006 | 31.94 | e | 30.19 | a | 32.02 | a | 44.65 | 56.58 | 66.93 | 73.26 | 69.57 | a | 57.57 | c | 45.77 | 38.75 | 29.74 | 48.08 | ||||||||
2007 | 23.40 | 32.52 | a | 41.20 | a | 46.54 | e | 56.80 | a | 67.12 | 76.23 | 71.74 | d | 58.71 | d | 46.34 | i | 40.37 | d | 25.45 | 49.10 | a | ||||
2008 | 23.62 | b | 29.24 | 34.96 | c | 40.29 | b | 50.12 | b | 63.62 | b | 73.23 | a | 70.52 | a | 60.36 | a | 48.92 | a | 41.52 | a | 29.67 | e | 47.17 | ||
2009 | 32.24 | d | 31.05 | 36.55 | 41.17 | 55.37 | d | 57.55 | b | 71.85 | k | 68.21 | 62.00 | a | 43.94 | e | 38.61 | b | 22.77 | a | 44.50 | a | ||||
2010 | 29.59 | b | 29.29 | 35.63 | a | 40.75 | b | 45.77 | a | 62.37 | c | 71.12 | c | 68.02 | c | 62.29 | d | 48.76 | 33.78 | c | 32.03 | a | 46.62 | |||
2011 | 28.68 | a | 25.86 | 36.47 | 40.88 | a | 46.19 | b | 58.77 | d | 69.79 | b | 69.03 | 62.52 | b | 49.05 | a | 34.70 | b | 27.72 | a | 45.80 | ||||
2012 | 32.00 | b | 29.28 | 39.75 | a | 47.36 | b | 54.23 | 64.41 | a | 70.88 | a | 70.53 | 61.93 | a | 49.73 | 41.50 | b | 29.66 | c | 49.27 | |||||
2013 | 24.33 | a | 27.52 | a | 39.00 | 42.30 | 50.87 | a | 63.17 | a | 68.95 | 66.90 | b | 56.17 | 43.97 | 37.72 | a | 27.20 | c | 45.67 | ||||||
2014 | 33.65 | a | 35.18 | 39.18 | 43.75 | 51.57 | b | 59.77 | d | 72.54 | c | 65.00 | b | 61.89 | c | 51.44 | f | 38.26 | a | 33.10 | b | 48.53 | a | |||
2015 | 33.52 | a | 38.21 | 41.77 | 44.80 | 50.10 | 68.20 | 68.40 | a | 70.10 | b | 65.53 | a | 52.15 | 32.45 | 28.47 | 49.48 | |||||||||
2016 | 27.32 | 34.39 | a | 41.79 | 44.92 | 50.50 | 67.95 | 72.87 | a | 70.16 | 59.78 | a | 51.43 | a | 40.59 | a | 27.32 | c | 49.08 | |||||||
2017 | 26.24 | 33.90 | d | 43.80 | c | 43.55 | a | 52.63 | 67.57 | 72.90 | a | 69.30 | d | 58.50 | a | 47.18 | 43.93 | b | 33.66 | b | 49.43 | |||||
2018 | 34.43 | c | 30.31 | a | 35.34 | f | 47.33 | 52.67 | a | 65.29 | a | 73.60 | a | 72.43 | j | 64.55 | a | 45.10 | f | 35.41 | s | 29.54 | s | 52.60 | e | |
2019 | ----- | z | 27.21 | p | 35.98 | k | 48.97 | o | 47.27 | c | 59.22 | c | 71.37 | 71.63 | 61.07 | 41.27 | 38.54 | b | 29.53 | a | 52.49 | d | ||||
2020 | 31.77 | a | 30.46 | a | 36.48 | b | 43.37 | 54.81 | 63.12 | 72.95 | 74.61 | 64.02 | 53.47 | b | 37.88 | 30.26 | 49.43 | |||||||||
2021 | 29.27 | a | 33.57 | 34.61 | 44.22 | 52.88 | a | 68.42 | 72.09 | o | 71.72 | h | 65.57 | b | 47.16 | 43.50 | 32.81 | 45.20 | b | |||||||
2022 | 31.62 | b | 28.37 | a | 39.68 | 45.45 | 53.06 | 66.03 | 75.41 | b | 70.91 | b | 66.58 | 51.68 | a | 29.60 | 28.82 | 48.94 | ||||||||
2023 | 25.53 | 24.77 | 28.45 | 42.10 | 53.58 | a | 60.50 | a | 75.12 | e | 69.26 | b | 61.67 | f | 49.89 | 40.82 | e | 35.40 | 45.95 | a | ||||||
2024 | 32.15 | 33.79 | a | 37.13 | 43.97 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.35 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.79 | 31.77 | 37.08 | 44.17 | 53.05 | 63.00 | 71.70 | 69.58 | 60.90 | 49.19 | 37.29 | 30.70 | 48.30 | |||||||||||||
S.D. | 3.44 | 3.86 | 3.78 | 3.36 | 3.47 | 3.52 | 2.23 | 2.11 | 2.96 | 3.45 | 3.58 | 3.38 | 1.20 | |||||||||||||
SKEW | 0.05 | 0.11 | -0.22 | -0.07 | -0.14 | -0.17 | -0.34 | -0.45 | -0.41 | -0.31 | -0.19 | -0.01 | -0.36 | |||||||||||||
MAX | 38.35 | 41.12 | 44.00 | 52.02 | 59.37 | 68.47 | 76.94 | 74.61 | 66.58 | 56.26 | 45.90 | 38.65 | 50.70 | |||||||||||||
MIN | 21.82 | 22.39 | 28.02 | 35.55 | 45.30 | 55.65 | 63.83 | 62.71 | 53.28 | 39.60 | 28.81 | 22.65 | 45.67 | |||||||||||||
YRS | 81 | 82 | 80 | 80 | 81 | 82 | 80 | 82 | 82 | 80 | 81 | 82 | 65 |