YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.07 | h | 67.68 | 55.74 | 36.60 | 34.62 | b | 48.66 | h | |||
1939 | 31.64 | b | 26.05 | 45.06 | 56.48 | a | 63.28 | a | 68.65 | 75.57 | a | 74.32 | 67.88 | 60.71 | ----- | z | ----- | z | 56.97 | b | ||||||
1940 | ----- | z | ----- | z | ----- | z | 54.16 | b | 65.98 | a | 74.55 | 78.21 | g | 76.19 | 63.12 | e | 55.37 | 40.39 | h | 32.09 | o | 64.90 | f | |||
1941 | ----- | z | 36.84 | i | 40.26 | 46.80 | e | 62.27 | 68.55 | a | 79.38 | a | 77.81 | 68.30 | b | 58.37 | a | 44.12 | 35.07 | d | 58.09 | b | ||||
1942 | 32.71 | 30.96 | 41.84 | 53.47 | 59.77 | 69.60 | 77.13 | a | 75.17 | b | 67.12 | a | 57.34 | 43.95 | a | 38.15 | a | 53.93 | ||||||||
1943 | 36.53 | b | 45.27 | q | 47.80 | d | 60.40 | 61.15 | g | 67.73 | 77.24 | 73.73 | 71.31 | f | 56.81 | b | 43.00 | d | 30.88 | e | 54.90 | c | ||||
1944 | 26.97 | 31.55 | 40.63 | a | 47.47 | 60.15 | 65.18 | b | 74.56 | 75.87 | 68.87 | 59.20 | p | 37.09 | g | 34.29 | 52.55 | b | ||||||||
1945 | 34.20 | a | 38.15 | a | 40.65 | h | 48.32 | 62.13 | 65.60 | 77.11 | 74.48 | 66.66 | b | 58.14 | i | 38.19 | n | 28.92 | 55.06 | c | ||||||
1946 | 28.85 | a | 36.56 | a | 46.08 | 54.69 | q | 59.62 | e | 73.52 | 77.97 | a | 74.48 | 67.31 | a | 49.85 | a | 37.66 | k | 35.18 | n | 57.14 | c | |||
1947 | 30.40 | a | 41.00 | d | 48.00 | 52.14 | a | 65.35 | 66.52 | 76.98 | 72.95 | 69.90 | 59.86 | i | ----- | z | 28.67 | j | 58.14 | c | ||||||
1948 | 30.63 | 32.76 | 35.25 | m | 53.10 | d | 62.10 | e | 71.69 | l | 76.25 | m | 74.02 | 69.93 | 51.67 | m | 40.95 | t | 31.52 | d | 50.58 | e | ||||
1949 | 20.45 | 23.43 | 43.29 | 56.05 | 61.04 | d | 64.12 | n | 77.29 | e | 75.86 | f | 67.45 | i | 48.76 | h | 47.68 | 30.94 | f | 47.03 | e | |||||
1950 | 32.59 | t | 36.82 | 44.03 | 50.69 | v | 58.35 | g | 71.40 | 74.45 | 73.97 | 65.77 | 60.18 | 44.33 | 37.15 | 56.46 | c | |||||||||
1951 | 32.11 | m | 31.95 | 42.47 | 54.40 | j | 59.31 | 67.68 | 76.65 | 69.39 | 65.29 | d | 49.90 | a | 29.55 | s | 24.69 | 54.15 | c | |||||||
1952 | 27.32 | f | 31.96 | d | 35.82 | 51.44 | e | 60.13 | 67.78 | 76.45 | 73.61 | 67.20 | 59.92 | 38.44 | n | 29.34 | c | 55.37 | b | |||||||
1953 | 34.08 | 35.70 | 44.68 | 50.13 | 57.15 | e | 70.18 | 76.71 | 71.45 | 70.33 | f | ----- | z | 41.90 | 30.79 | 51.28 | b | |||||||||
1954 | 32.56 | 45.16 | 43.02 | 60.53 | l | 65.44 | 70.58 | 80.35 | 75.23 | 66.82 | 59.67 | j | ----- | z | 27.87 | 56.34 | c | |||||||||
1955 | 24.73 | 23.48 | 41.02 | f | 51.90 | d | 60.60 | 68.80 | 76.74 | 76.16 | 71.00 | 58.27 | a | 44.57 | h | 36.32 | 54.80 | b | ||||||||
1956 | 37.37 | 34.57 | 46.45 | 53.13 | 64.26 | 73.95 | 76.34 | 72.39 | 71.40 | 54.85 | 36.60 | 30.23 | a | 54.30 | ||||||||||||
1957 | 29.58 | 37.41 | a | 46.29 | 49.88 | a | 57.24 | 71.08 | 74.56 | 72.44 | 66.20 | 51.95 | 35.88 | 33.13 | 52.14 | |||||||||||
1958 | 30.50 | 40.20 | 39.00 | 50.02 | 65.11 | 70.38 | 76.05 | 77.06 | 66.73 | 56.79 | 42.12 | 37.68 | 54.30 | |||||||||||||
1959 | 31.32 | 37.27 | 44.63 | 55.04 | d | 58.84 | c | 72.57 | 77.10 | 70.76 | h | 64.18 | 54.20 | a | 43.35 | d | 32.39 | 51.90 | a | |||||||
1960 | 23.50 | a | 30.81 | b | 46.70 | d | 53.78 | 60.21 | b | 71.77 | 77.29 | 75.63 | 66.89 | c | 52.84 | 41.70 | c | 30.85 | e | 52.66 | ||||||
1961 | 30.87 | d | 38.96 | a | 43.16 | 52.00 | 61.73 | 73.88 | 76.38 | a | 72.23 | 58.87 | 51.84 | 38.48 | c | 26.16 | 52.05 | |||||||||
1962 | 30.27 | a | 37.81 | a | 38.52 | 57.12 | 58.34 | 70.02 | 74.89 | 73.98 | 66.40 | a | 55.47 | 46.17 | a | 34.17 | b | 53.60 | ||||||||
1963 | 20.53 | 41.12 | 40.85 | 49.09 | b | 64.32 | 66.67 | a | 76.87 | 72.29 | 68.00 | 60.90 | 43.48 | 31.13 | a | 52.94 | ||||||||||
1964 | 27.93 | a | 33.53 | 37.27 | 49.83 | 59.89 | 68.38 | 79.37 | 75.06 | 66.44 | c | 60.24 | 38.10 | 32.66 | 52.39 | |||||||||||
1965 | 34.55 | 35.39 | a | 39.85 | 49.07 | a | 55.97 | a | 65.55 | 73.60 | a | 73.29 | 61.72 | a | 59.71 | 46.52 | 30.85 | 52.17 | ||||||||
1966 | 27.35 | 29.61 | 45.15 | 54.62 | 65.16 | 71.43 | 77.85 | 76.55 | 67.98 | 55.69 | 44.43 | 31.23 | 53.92 | |||||||||||||
1967 | 28.71 | 39.11 | 49.89 | m | 48.12 | 59.02 | 67.20 | 78.24 | 77.29 | 68.48 | a | 59.44 | 46.38 | 24.98 | 54.27 | a | ||||||||||
1968 | 24.32 | 40.31 | 46.18 | 48.20 | 60.53 | 73.18 | 76.34 | 70.42 | 66.14 | a | 56.24 | 41.32 | 26.84 | 52.50 | ||||||||||||
1969 | 33.05 | a | 32.73 | 39.52 | 54.53 | 66.52 | c | 67.88 | 78.55 | 79.27 | 69.47 | 48.57 | a | 41.40 | 35.17 | a | 53.89 | |||||||||
1970 | 32.13 | 41.21 | 42.79 | 47.48 | 63.47 | 70.55 | 76.35 | 77.26 | 65.05 | 51.47 | 41.27 | 31.48 | 53.38 | |||||||||||||
1971 | 31.66 | 35.70 | 41.94 | 51.82 | 58.31 | 72.12 | 79.79 | 76.58 | 64.67 | 52.65 | 37.50 | 27.74 | 52.54 | |||||||||||||
1972 | 34.00 | 40.34 | 52.90 | 54.48 | 63.44 | 73.05 | 78.84 | 75.18 | 66.93 | 53.58 | 37.23 | 27.18 | 54.76 | |||||||||||||
1973 | 20.89 | 32.54 | 39.84 | 48.40 | 62.85 | 71.45 | 77.24 | 76.16 | 66.87 | 57.26 | 41.13 | 33.50 | 52.34 | |||||||||||||
1974 | 21.90 | 29.39 | 48.92 | 50.40 | 66.65 | 76.53 | 77.58 | 76.55 | 68.55 | 57.37 | 41.73 | 31.24 | 53.90 | |||||||||||||
1975 | 27.63 | a | 33.82 | 42.31 | 44.98 | 58.11 | 68.42 | 78.11 | 75.10 | 68.50 | 54.76 | 40.32 | 31.37 | 51.95 | ||||||||||||
1976 | 29.69 | 40.12 | 41.18 | 51.80 | 63.56 | 71.60 | 79.76 | 74.76 | 67.68 | 54.87 | 45.55 | 32.77 | 54.45 | |||||||||||||
1977 | 30.56 | 41.16 | 40.85 | 56.43 | 58.48 | 76.08 | 78.05 | a | 76.87 | 68.60 | 58.38 | a | 43.80 | 38.95 | 55.69 | |||||||||||
1978 | 31.98 | 36.09 | 48.89 | 53.27 | 60.24 | 73.58 | 78.50 | 76.58 | 66.60 | 60.56 | 41.67 | 24.48 | 54.37 | |||||||||||||
1979 | 21.02 | 28.80 | 42.82 | 53.02 | 62.18 | 72.40 | a | 79.24 | 75.97 | 73.28 | 60.35 | 35.95 | 30.02 | 52.92 | ||||||||||||
1980 | 31.76 | 39.12 | 39.87 | 51.92 | 57.97 | 71.53 | 78.53 | 74.66 | 67.78 | a | 56.42 | 44.37 | 40.76 | 54.56 | ||||||||||||
1981 | 38.77 | 39.84 | 44.18 | 57.38 | 61.08 | 75.25 | 78.19 | b | 76.23 | 69.20 | 52.90 | 44.67 | 34.15 | 55.99 | ||||||||||||
1982 | 29.53 | 32.39 | 44.00 | 50.55 | a | 60.82 | 68.69 | a | 76.39 | 74.50 | a | 66.70 | 50.90 | 38.23 | 32.22 | a | 52.08 | |||||||||
1983 | 33.05 | a | 39.55 | 44.81 | 46.83 | 58.90 | a | 68.90 | 75.68 | a | 76.11 | 70.81 | a | 57.03 | a | 42.17 | 30.61 | 53.71 | ||||||||
1984 | 27.56 | 32.89 | a | 43.81 | 50.16 | b | 67.48 | a | 70.70 | 77.89 | 74.80 | c | 69.58 | 50.20 | c | 40.57 | a | 30.74 | 53.03 | |||||||
1985 | 30.94 | 31.84 | 42.56 | 56.45 | 62.95 | a | 75.53 | a | 78.36 | c | 77.94 | 63.91 | a | 55.53 | b | 40.73 | b | 34.26 | b | 54.25 | ||||||
1986 | 35.55 | 41.12 | 51.39 | c | 53.48 | f | 62.70 | f | 75.87 | d | 75.82 | 76.19 | 62.85 | 51.05 | b | 41.41 | a | 33.39 | d | 54.47 | b | |||||
1987 | 27.86 | c | 35.54 | b | 41.63 | a | 55.65 | c | 61.55 | b | 74.02 | 74.52 | c | 74.15 | 68.07 | 59.10 | 40.45 | 29.63 | 53.51 | |||||||
1988 | 25.42 | 36.71 | 42.58 | a | 53.77 | 61.47 | a | 74.28 | 79.82 | 75.98 | a | 67.22 | 62.05 | a | 42.62 | a | 31.75 | c | 54.47 | |||||||
1989 | 23.42 | a | 31.57 | 49.96 | c | 60.24 | a | 63.88 | a | 70.14 | b | 79.77 | 73.79 | 67.79 | a | 55.79 | 45.73 | 36.45 | b | 54.88 | ||||||
1990 | 31.42 | a | 38.06 | a | 48.17 | b | 56.57 | 61.63 | 75.07 | b | 77.53 | a | 74.69 | 70.12 | a | 55.00 | c | 41.53 | 25.55 | b | 54.61 | |||||
1991 | 24.71 | 39.37 | b | 41.12 | a | 49.60 | a | 59.64 | b | 69.88 | a | 77.45 | 75.48 | a | 67.93 | 59.02 | 38.77 | b | 28.62 | c | 52.63 | |||||
1992 | 24.10 | b | 37.75 | a | 46.69 | b | 59.83 | c | 64.29 | c | 70.82 | b | 75.29 | 76.23 | 69.32 | 59.19 | 36.95 | 26.29 | e | 53.90 | ||||||
1993 | 30.55 | a | 32.48 | e | 47.43 | b | 52.95 | b | 62.18 | c | 69.59 | c | 76.83 | a | 72.95 | a | 67.59 | a | 52.60 | b | 36.77 | b | 29.96 | d | 52.66 | |
1994 | 34.85 | a | 32.38 | 49.17 | d | 51.46 | e | 61.23 | e | 76.33 | 79.63 | a | 77.94 | e | 67.38 | 53.00 | a | 33.89 | c | 30.04 | d | 53.94 | ||||
1995 | 30.81 | 45.10 | b | 44.14 | c | 49.48 | d | 56.15 | a | 65.62 | a | 75.93 | a | 76.91 | b | 67.38 | a | 54.77 | a | 44.28 | a | 35.81 | d | 53.87 | ||
1996 | 32.74 | f | 40.36 | d | 46.13 | a | 53.24 | a | 64.47 | 74.48 | 80.17 | b | 77.20 | a | 63.52 | a | 52.50 | a | 40.03 | 33.46 | g | 59.21 | b | |||
1997 | 29.64 | b | 33.66 | c | 48.14 | b | 48.40 | f | 64.10 | a | 71.17 | a | 74.75 | a | 73.05 | b | 65.05 | 54.70 | c | 41.35 | c | 31.16 | b | 53.34 | a | |
1998 | 34.33 | a | 34.75 | d | 45.06 | e | 48.70 | b | 59.85 | a | 68.07 | a | 78.45 | 76.88 | b | 66.93 | a | 52.71 | b | 40.93 | a | 29.96 | d | 53.05 | ||
1999 | 37.45 | c | 38.78 | a | 48.34 | 46.48 | a | 59.24 | 69.34 | a | 76.63 | 71.27 | a | 64.21 | b | 58.50 | d | 45.28 | a | 33.18 | a | 54.06 | ||||
2000 | 35.85 | 39.21 | a | 45.28 | a | 58.14 | a | 66.03 | a | 73.83 | a | 79.22 | b | 76.13 | a | 66.85 | 53.88 | b | 33.45 | 33.36 | b | 55.10 | ||||
2001 | 29.13 | a | 33.56 | b | 46.21 | 52.05 | 64.98 | c | 73.19 | c | 76.44 | 75.21 | b | 70.58 | 57.40 | 43.75 | 28.65 | d | 54.26 | |||||||
2002 | 29.22 | a | 34.31 | a | 42.77 | c | 57.08 | 62.70 | a | 75.55 | 81.50 | 76.40 | 65.10 | a | 51.84 | 39.76 | a | 33.10 | a | 54.11 | ||||||
2003 | 37.09 | c | 36.06 | a | 45.68 | 50.76 | a | 63.08 | a | 72.45 | 83.63 | 76.46 | c | 67.90 | a | 60.57 | b | 37.95 | 32.34 | c | 55.33 | |||||
2004 | 28.24 | 31.69 | b | 51.45 | b | 52.36 | b | 62.71 | 71.22 | a | 77.58 | 73.40 | 65.34 | b | 53.36 | b | 38.17 | c | 30.41 | c | 52.99 | |||||
2005 | 34.41 | c | 37.48 | c | 43.62 | f | 51.81 | c | 62.48 | a | 67.03 | 80.50 | 72.37 | 65.67 | 54.81 | b | 43.59 | a | 31.62 | c | 54.71 | a | ||||
2006 | 32.76 | b | 36.66 | 40.12 | c | 53.98 | a | 64.76 | 75.81 | c | 79.32 | 72.67 | b | 63.02 | a | 50.12 | a | 40.76 | g | 29.79 | b | 54.46 | a | |||
2007 | 28.72 | b | 39.96 | b | 47.30 | c | 53.53 | 63.45 | a | 75.93 | b | 80.82 | a | 76.50 | 66.81 | a | 52.52 | c | 44.37 | d | 27.39 | c | 54.78 | |||
2008 | 25.98 | c | 35.84 | a | 42.87 | 49.34 | a | 58.25 | c | 72.32 | 79.84 | 76.65 | a | 67.09 | b | 55.43 | b | 45.85 | c | 28.56 | d | 53.17 | ||||
2009 | 33.59 | d | 36.89 | 45.25 | a | 50.31 | a | 64.48 | 67.24 | a | 79.34 | 74.69 | 68.53 | a | 51.34 | b | 43.44 | e | 23.74 | 53.24 | ||||||
2010 | 26.55 | b | 29.59 | a | 41.23 | a | 50.58 | 56.03 | 71.82 | b | 77.77 | a | 72.02 | b | 70.26 | c | 54.53 | 38.67 | 35.50 | 52.05 | ||||||
2011 | 27.31 | 31.98 | 44.30 | a | 48.83 | 56.07 | a | 70.12 | 74.71 | 76.23 | 67.97 | 55.26 | 38.48 | 29.18 | 51.70 | |||||||||||
2012 | 33.30 | a | 35.79 | 47.35 | 55.30 | 64.08 | 75.20 | 77.18 | 77.08 | 68.83 | 56.40 | 43.87 | 30.53 | 55.41 | ||||||||||||
2013 | 23.69 | 32.86 | 45.43 | a | 51.17 | 61.29 | 75.88 | 78.53 | 73.76 | 65.42 | 51.74 | 40.15 | 25.00 | 52.08 | ||||||||||||
2014 | 34.74 | 40.66 | 45.63 | 51.42 | 59.52 | 72.33 | 79.56 | 71.69 | 69.27 | 58.02 | 40.77 | 34.55 | 54.85 | |||||||||||||
2015 | 31.57 | a | 42.69 | a | 49.00 | 51.27 | 58.42 | 74.75 | 74.45 | 75.18 | 70.50 | a | 57.38 | b | 38.73 | 27.58 | a | 54.29 | ||||||||
2016 | 29.42 | 36.40 | 47.55 | 52.00 | 58.89 | 77.43 | a | 77.26 | 74.10 | 65.45 | 56.42 | 45.40 | a | 30.05 | 54.20 | |||||||||||
2017 | 29.79 | 41.75 | 50.26 | 51.23 | 60.79 | 76.13 | 79.05 | 75.69 | 65.33 | 52.68 | 46.40 | a | 36.26 | 55.45 | ||||||||||||
2018 | 34.60 | 38.61 | 43.89 | 54.53 | a | 63.29 | 76.28 | 80.37 | 77.58 | 71.45 | 50.71 | 39.17 | 29.71 | 55.02 | ||||||||||||
2019 | 30.03 | 29.05 | 42.90 | 54.98 | 53.89 | 69.60 | 77.81 | 78.48 | 69.52 | 49.18 | 42.38 | 30.48 | b | 52.36 | ||||||||||||
2020 | 26.74 | 35.03 | 44.61 | 52.53 | 64.37 | 72.14 | a | 77.39 | 81.24 | 68.26 | a | 58.84 | 42.62 | 29.95 | 54.48 | |||||||||||
2021 | 30.27 | 37.12 | b | 42.45 | 52.62 | 62.74 | 76.38 | 79.32 | 75.19 | 68.47 | 50.47 | 45.97 | 34.35 | 54.61 | ||||||||||||
2022 | 32.32 | 34.64 | 45.05 | 52.05 | 60.68 | 72.73 | 78.45 | 75.94 | 70.80 | 54.89 | 36.92 | 30.48 | 53.75 | |||||||||||||
2023 | 31.61 | 30.27 | 37.53 | 49.70 | 62.42 | 68.65 | 81.85 | 75.45 | 68.23 | 57.03 | 42.70 | 34.32 | 53.31 | |||||||||||||
2024 | 34.98 | 38.14 | 44.02 | 51.19 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.05 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.11 | 35.70 | 44.33 | 52.24 | 61.50 | 71.51 | 77.72 | 75.12 | 67.33 | 55.32 | 41.44 | 31.34 | 53.69 | |||||||||||||
S.D. | 4.23 | 4.40 | 3.46 | 3.27 | 2.87 | 3.16 | 1.91 | 2.04 | 2.37 | 3.32 | 3.26 | 3.52 | 1.08 | |||||||||||||
SKEW | -0.40 | -0.40 | 0.04 | 0.34 | -0.22 | -0.07 | 0.25 | -0.19 | -0.54 | -0.01 | -0.31 | 0.13 | -0.03 | |||||||||||||
MAX | 38.77 | 45.16 | 52.90 | 60.40 | 67.48 | 77.43 | 83.63 | 81.24 | 73.28 | 62.05 | 47.68 | 40.76 | 55.99 | |||||||||||||
MIN | 20.45 | 23.43 | 35.82 | 44.98 | 53.89 | 65.18 | 73.60 | 69.39 | 58.87 | 48.57 | 33.45 | 23.74 | 51.70 | |||||||||||||
YRS | 80 | 83 | 80 | 79 | 82 | 83 | 83 | 83 | 83 | 79 | 74 | 80 | 62 |