YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | 38.21 | b | 46.13 | 51.65 | 63.90 | 67.29 | 66.53 | 58.92 | 50.90 | 32.15 | 32.44 | 50.81 | b | |||||||||
1939 | 24.95 | a | 19.55 | 37.37 | 48.17 | 54.52 | 63.08 | 69.11 | 67.61 | 61.48 | 47.52 | 40.28 | a | 32.65 | a | 47.19 | ||||||||||
1940 | 27.82 | a | 32.38 | 40.52 | b | 46.26 | a | 55.41 | b | 64.73 | 69.48 | 66.42 | 59.22 | 51.37 | 37.34 | b | 35.28 | b | 48.85 | |||||||
1941 | 30.06 | 34.64 | 38.10 | 41.40 | a | 54.24 | 59.03 | a | 65.92 | 65.48 | c | 58.75 | 48.23 | 39.32 | b | ----- | z | 48.65 | a | |||||||
1942 | 30.23 | k | 29.52 | g | 34.52 | j | ----- | z | 53.73 | 61.59 | a | 69.27 | 66.02 | 60.33 | 48.90 | 41.05 | 33.65 | 54.32 | d | |||||||
1943 | 32.06 | 39.27 | h | 39.63 | a | 48.92 | 53.43 | c | 62.53 | 68.84 | 67.34 | 60.02 | 48.71 | 38.03 | 31.42 | a | 50.08 | a | ||||||||
1944 | 26.92 | 32.73 | a | 36.81 | d | 43.33 | a | 52.60 | 61.33 | 67.44 | 67.53 | 59.32 | 52.13 | 35.08 | 30.22 | a | 47.12 | |||||||||
1945 | 28.70 | a | 35.61 | 35.87 | a | 43.82 | 52.98 | 58.78 | 68.92 | 68.94 | 60.29 | a | 50.82 | 36.45 | 24.61 | 47.15 | ||||||||||
1946 | 22.85 | a | 29.02 | c | 40.21 | b | 50.91 | a | 52.03 | 64.37 | 67.88 | a | 66.64 | b | 64.64 | a | 47.41 | i | ----- | z | 31.63 | l | 50.95 | c | ||
1947 | 27.04 | r | 35.23 | 39.32 | a | 44.97 | 56.98 | 61.09 | a | 69.88 | b | 65.78 | a | 61.73 | b | 51.45 | b | 32.21 | a | 29.42 | f | 51.86 | b | |||
1948 | 28.93 | d | 31.60 | 31.24 | d | 49.82 | m | 55.18 | c | 62.71 | a | 68.19 | o | 66.97 | a | 61.18 | b | 50.30 | h | 31.48 | 29.57 | c | 44.32 | c | ||
1949 | 22.31 | b | 25.78 | a | 37.38 | j | 45.22 | c | 52.60 | b | 62.10 | a | 67.68 | 65.37 | 62.12 | 47.08 | 41.60 | 24.91 | i | 49.19 | b | |||||
1950 | 29.50 | a | 34.89 | 39.24 | 48.15 | 53.09 | c | 62.72 | 66.74 | 64.55 | 56.57 | 55.81 | 40.70 | 34.35 | 48.86 | |||||||||||
1951 | 28.65 | 32.04 | 37.32 | 45.08 | 54.53 | 59.95 | a | 70.95 | 67.05 | 60.60 | 49.26 | 36.33 | 27.66 | 47.45 | ||||||||||||
1952 | 32.66 | 30.48 | 32.73 | 46.33 | 54.32 | f | 64.45 | j | 67.15 | 67.61 | 61.82 | 51.61 | 32.85 | 27.82 | 45.11 | b | ||||||||||
1953 | 32.56 | 30.77 | 39.11 | 45.05 | a | 49.76 | 65.32 | 69.94 | 65.76 | 62.32 | 49.94 | 38.95 | 23.79 | 47.77 | ||||||||||||
1954 | 30.56 | 37.55 | 35.98 | 49.92 | 55.85 | 63.47 | 69.87 | 65.42 | 61.27 | 51.50 | 40.38 | 40.86 | x | 51.07 | a | |||||||||||
1955 | 23.78 | b | 23.11 | 38.13 | 44.53 | 53.03 | 62.13 | 67.47 | 66.40 | g | 60.97 | 51.85 | 37.43 | 33.38 | a | 45.07 | a | |||||||||
1956 | 34.76 | 22.88 | 38.87 | 43.97 | 56.15 | 65.92 | 67.24 | 63.90 | 62.43 | 50.93 | a | 32.48 | 27.67 | a | 47.27 | |||||||||||
1957 | 33.23 | a | 39.86 | 38.19 | 43.27 | 51.27 | 63.58 | 68.10 | 64.87 | 59.28 | 48.11 | 33.32 | 32.69 | 47.98 | ||||||||||||
1958 | 29.37 | 35.55 | 34.35 | 44.12 | 57.02 | 65.78 | 67.90 | 67.89 | 60.67 | 49.71 | 36.38 | 33.56 | 48.53 | |||||||||||||
1959 | 29.16 | 31.93 | 36.21 | 47.15 | 53.63 | 66.38 | 69.92 | 65.37 | 58.60 | 47.40 | 37.48 | 32.48 | 47.98 | |||||||||||||
1960 | 21.31 | 25.66 | 40.11 | 46.58 | 52.84 | 64.07 | 68.52 | 68.34 | 61.85 | 46.79 | 38.13 | 26.74 | 46.74 | |||||||||||||
1961 | 28.24 | 32.43 | 38.23 | 44.97 | 54.11 | 66.02 | 68.95 | 66.53 | a | 57.10 | 47.32 | 35.48 | 25.02 | 47.03 | ||||||||||||
1962 | 24.15 | 33.25 | 32.89 | 48.85 | 52.50 | a | 61.20 | 67.27 | 66.69 | 60.02 | 48.98 | 39.92 | 30.58 | 47.19 | ||||||||||||
1963 | 21.10 | a | 32.22 | a | 37.27 | 45.32 | 56.28 | a | 61.62 | a | 70.28 | a | 64.57 | a | 61.68 | 52.39 | 38.88 | 28.62 | a | 47.52 | ||||||
1964 | 23.42 | 21.45 | 31.00 | 41.53 | 53.10 | 61.15 | 69.05 | 64.73 | 58.42 | 50.37 | 36.15 | 26.76 | 44.76 | |||||||||||||
1965 | 31.39 | 27.80 | a | 34.79 | 44.45 | 50.94 | 58.33 | a | 67.18 | 63.53 | l | 56.37 | 49.34 | 40.35 | 29.26 | b | 44.56 | a | ||||||||
1966 | 24.23 | a | 23.25 | 37.73 | 45.68 | 55.95 | a | 62.12 | 69.60 | 66.18 | a | 59.30 | 49.05 | a | 41.38 | b | 28.39 | 46.90 | ||||||||
1967 | 26.03 | 34.02 | b | 41.95 | 45.55 | 52.15 | 61.23 | 69.52 | 64.33 | a | 59.30 | 49.66 | 40.16 | a | 24.13 | a | 47.34 | |||||||||
1968 | 24.68 | a | 35.45 | 38.34 | 42.82 | 51.62 | a | 62.17 | 66.84 | 63.09 | c | 56.95 | 49.58 | a | 36.12 | a | 25.27 | 46.08 | ||||||||
1969 | 32.32 | 32.18 | 32.37 | 46.97 | 55.11 | 61.07 | 69.81 | 69.00 | 60.95 | 47.20 | a | 36.80 | 33.77 | a | 48.13 | |||||||||||
1970 | 29.03 | 36.00 | 36.38 | b | 40.69 | a | 53.87 | 62.58 | 69.83 | b | 67.19 | 58.72 | 43.98 | 38.90 | 30.77 | 47.33 | ||||||||||
1971 | 28.15 | 31.23 | 39.44 | 44.57 | 50.85 | 63.02 | 70.18 | 64.65 | 57.93 | 46.87 | 37.80 | 28.76 | 46.95 | |||||||||||||
1972 | 31.21 | 35.33 | 44.10 | 45.90 | 53.00 | 62.73 | 69.50 | 65.58 | 58.47 | a | 50.53 | 34.15 | 28.03 | 48.21 | ||||||||||||
1973 | 24.34 | 30.52 | 34.55 | a | 40.34 | a | 52.65 | 61.28 | 67.05 | 66.31 | 57.68 | 49.97 | 38.60 | 31.24 | 46.21 | |||||||||||
1974 | 27.98 | a | 30.62 | 42.60 | 45.05 | 56.06 | 67.30 | 67.56 | 64.42 | 58.97 | 50.35 | 37.87 | 26.11 | 47.91 | ||||||||||||
1975 | 26.55 | 29.93 | 36.73 | 40.62 | 50.45 | 59.83 | 67.87 | 65.52 | 57.65 | 49.31 | 36.25 | 27.05 | 45.65 | |||||||||||||
1976 | 24.97 | 37.38 | 37.52 | 45.65 | 54.56 | 62.45 | 68.71 | 65.85 | 60.52 | 47.26 | 35.82 | 29.50 | 47.52 | |||||||||||||
1977 | 22.71 | 31.68 | 35.47 | 46.52 | 52.06 | 63.71 | a | 68.08 | a | 68.19 | 61.17 | 51.06 | 38.95 | 34.28 | a | 47.82 | ||||||||||
1978 | 30.21 | 32.02 | 41.61 | 47.10 | 51.92 | 63.33 | a | 68.72 | a | 64.57 | a | 59.73 | 51.82 | 39.23 | 28.08 | a | 48.20 | |||||||||
1979 | 24.11 | 27.91 | 35.97 | 46.58 | 51.95 | 62.22 | 68.35 | 64.24 | 62.72 | 51.76 | 34.13 | 31.39 | 46.78 | |||||||||||||
1980 | 32.16 | 35.57 | 37.60 | a | 44.70 | 51.35 | 64.16 | a | 70.42 | 66.87 | 61.15 | 48.26 | 37.35 | 37.21 | 48.90 | |||||||||||
1981 | 34.61 | 34.89 | a | 37.00 | 48.98 | 53.47 | 66.30 | b | 68.25 | a | 67.21 | 60.35 | 49.00 | 40.32 | 33.00 | 49.45 | ||||||||||
1982 | 26.50 | a | 31.27 | 38.94 | 45.58 | 52.19 | 60.52 | a | 66.92 | 66.45 | b | 61.05 | 46.58 | a | 37.84 | a | 29.18 | 46.92 | ||||||||
1983 | 28.61 | 31.98 | a | 37.44 | 40.88 | b | 52.54 | c | 59.71 | a | 67.14 | b | 66.81 | e | 62.37 | 50.19 | b | 36.45 | a | 32.60 | b | 47.23 | ||||
1984 | 29.39 | c | 32.86 | a | 38.20 | a | 42.87 | 57.77 | 63.25 | 68.97 | 65.55 | 59.95 | 43.39 | 37.27 | 33.10 | 47.71 | ||||||||||
1985 | 28.74 | 26.80 | 39.00 | 48.48 | 54.77 | 64.88 | 69.45 | 67.13 | 56.68 | 49.60 | 37.78 | 31.26 | 47.88 | |||||||||||||
1986 | 36.81 | 36.77 | 41.77 | 47.38 | a | 53.48 | 62.83 | 66.02 | 67.50 | 57.12 | 47.61 | 38.07 | 31.27 | 48.89 | ||||||||||||
1987 | 27.40 | 31.48 | 34.16 | 47.12 | 52.26 | 62.28 | 65.00 | 65.60 | 57.37 | 50.95 | 36.78 | 28.26 | 46.56 | |||||||||||||
1988 | 26.07 | a | 34.90 | 37.97 | 45.15 | 53.72 | b | 63.95 | 67.68 | a | 65.39 | 57.38 | 51.61 | 36.43 | 29.21 | 47.46 | ||||||||||
1989 | 26.79 | 35.80 | 42.48 | 50.12 | 56.48 | 62.37 | 68.61 | 64.61 | 59.85 | 48.39 | 36.30 | 27.82 | 48.30 | |||||||||||||
1990 | 26.45 | 30.72 | a | 39.79 | 48.20 | 53.03 | a | 66.03 | 66.94 | 63.53 | 62.07 | 48.29 | 37.93 | 23.98 | e | 47.25 | ||||||||||
1991 | 25.29 | 35.57 | 35.74 | 43.76 | a | 53.35 | 59.63 | 66.95 | 65.92 | 59.82 | 49.34 | 36.62 | 30.88 | b | 46.91 | |||||||||||
1992 | 24.76 | b | 34.45 | 40.05 | b | 48.80 | 54.02 | b | 60.34 | a | 64.39 | 64.44 | 59.65 | 50.16 | 30.47 | 26.78 | d | 46.52 | ||||||||
1993 | 32.06 | 33.98 | b | 40.24 | 45.43 | 54.18 | a | 62.09 | b | 66.50 | 64.48 | d | 57.81 | a | 47.39 | 35.14 | b | 29.59 | d | 47.41 | ||||||
1994 | 28.81 | 30.42 | b | 40.94 | 46.33 | c | 54.09 | c | 65.09 | a | 68.65 | a | 68.26 | 58.71 | a | 45.72 | a | 35.64 | b | 33.59 | c | 48.02 | ||||
1995 | 28.53 | b | 39.41 | a | 40.55 | c | 43.00 | b | 50.69 | 59.78 | 66.76 | 69.48 | 59.80 | 48.85 | 40.67 | c | 31.67 | e | 48.27 | |||||||
1996 | 30.60 | f | 37.63 | b | 38.50 | d | 46.96 | g | 56.67 | a | 64.78 | 68.68 | 66.81 | d | 56.27 | d | 47.91 | b | 38.22 | e | 30.52 | d | 50.60 | b | ||
1997 | 26.31 | b | 33.25 | d | 41.53 | a | 44.15 | c | 55.68 | a | 60.52 | b | 66.43 | b | 66.29 | 63.52 | 47.59 | d | 36.80 | 25.48 | d | 47.30 | ||||
1998 | 30.27 | c | 29.54 | 36.74 | b | 43.29 | a | 53.03 | 60.00 | c | 68.43 | a | 66.69 | b | 63.47 | a | 49.79 | c | 39.96 | b | 32.45 | a | 47.80 | |||
1999 | 32.47 | b | 36.37 | a | 42.32 | 43.88 | b | 53.36 | b | 61.42 | 66.27 | a | 65.78 | a | 59.32 | b | 49.07 | a | ----- | z | 28.03 | a | 48.93 | a | ||
2000 | 31.41 | c | 37.78 | b | 39.20 | d | 48.77 | 56.25 | a | 64.97 | 68.74 | 67.67 | a | 61.45 | b | 49.46 | c | 32.36 | e | 31.39 | c | 49.12 | ||||
2001 | 26.00 | e | 34.60 | w | 41.04 | f | 47.79 | a | 56.14 | c | 64.98 | b | 68.62 | b | 66.17 | a | 61.60 | a | 51.11 | d | 38.89 | b | 27.78 | a | 50.91 | b |
2002 | 27.22 | f | 32.38 | d | 38.08 | g | 50.46 | b | 55.53 | a | 66.03 | a | 68.58 | a | 66.19 | 59.12 | b | 48.18 | 37.71 | a | 28.28 | a | 51.25 | b | ||
2003 | 35.73 | a | 33.02 | 37.00 | b | 44.83 | c | 55.92 | a | 63.90 | 71.76 | 67.82 | a | 60.62 | 53.21 | 37.83 | 31.28 | a | 49.41 | |||||||
2004 | 30.45 | a | 29.69 | 44.16 | 45.68 | 55.18 | 62.75 | 66.82 | 64.02 | 58.23 | 47.81 | 37.07 | b | 31.25 | c | 47.76 | ||||||||||
2005 | 35.25 | a | 35.07 | 37.65 | 46.21 | a | 54.98 | a | 61.23 | 68.81 | 65.20 | a | 61.30 | 50.69 | 38.45 | 30.07 | a | 48.74 | ||||||||
2006 | 31.17 | a | 33.77 | 37.71 | 48.80 | 57.31 | 66.65 | 68.95 | 63.55 | 51.55 | b | 43.84 | 34.54 | b | 23.31 | b | 46.76 | |||||||||
2007 | 21.93 | a | 28.80 | 38.27 | 43.58 | 51.10 | 63.57 | a | 69.24 | 67.63 | 60.98 | a | 50.15 | 41.95 | 28.12 | b | 47.11 | |||||||||
2008 | 24.84 | 30.91 | 38.68 | 43.03 | 52.20 | f | 63.17 | a | 67.69 | 66.42 | 58.85 | 48.29 | 38.80 | 29.29 | b | 46.36 | a | |||||||||
2009 | 28.98 | a | 35.05 | 39.73 | 42.78 | 56.27 | 60.29 | b | 68.81 | 65.98 | 58.80 | 44.77 | 37.45 | 22.77 | a | 46.81 | ||||||||||
2010 | 24.02 | a | 26.88 | 34.77 | 44.66 | a | 50.34 | 62.82 | 68.84 | 65.21 | 61.48 | 50.87 | a | 34.12 | 36.42 | e | 46.70 | |||||||||
2011 | 26.67 | b | 27.54 | 40.45 | a | 46.76 | a | 49.62 | a | 62.08 | 68.76 | 67.89 | 60.03 | 47.69 | 37.17 | 26.43 | b | 46.76 | ||||||||
2012 | 32.18 | i | 32.67 | 38.02 | a | 48.47 | 55.80 | a | 65.45 | 68.53 | 66.87 | 60.43 | 48.60 | 38.52 | 29.57 | b | 50.27 | a | ||||||||
2013 | 22.40 | a | 27.89 | 39.24 | 44.17 | 52.92 | 65.38 | 68.15 | a | 66.00 | 59.93 | a | 43.20 | p | 37.72 | 28.93 | a | 46.61 | a | |||||||
2014 | 30.00 | a | 35.25 | 39.13 | 43.60 | 51.89 | 63.35 | 68.87 | 63.63 | 62.77 | 50.79 | 37.17 | 32.00 | a | 48.20 | |||||||||||
2015 | 32.39 | c | 37.50 | 41.85 | 44.85 | 49.21 | 65.23 | 65.90 | 66.65 | 61.41 | a | 51.37 | a | 35.74 | a | 27.93 | a | 48.34 | ||||||||
2016 | 26.28 | a | 34.14 | a | 40.40 | 44.93 | 50.88 | b | 66.12 | a | 69.02 | b | 63.66 | b | 59.25 | b | 51.98 | 41.27 | b | 32.72 | b | 48.39 | ||||
2017 | 29.87 | a | 36.30 | 42.74 | 44.79 | a | 51.71 | 65.29 | a | 68.95 | 65.00 | a | 60.85 | 50.70 | a | 42.39 | g | 31.05 | a | 49.75 | a | |||||
2018 | 32.96 | d | 33.23 | 38.40 | 48.73 | 55.05 | 66.00 | a | 69.08 | 66.84 | 60.97 | 48.16 | 34.09 | b | 30.17 | j | 50.32 | a | ||||||||
2019 | ----- | z | 29.21 | 39.87 | 45.29 | a | 48.82 | 61.60 | 69.19 | 67.92 | 61.55 | 45.21 | 37.90 | a | 30.47 | a | 48.82 | a | ||||||||
2020 | 30.33 | b | 33.00 | 40.98 | 45.81 | i | 54.61 | i | 62.08 | r | 67.53 | l | 69.58 | m | 59.50 | n | 48.70 | i | 40.60 | 26.69 | 34.32 | g | ||||
2021 | 27.98 | 30.82 | 36.50 | a | 47.10 | 52.73 | c | 66.12 | 68.44 | 66.32 | 61.53 | 46.82 | a | 40.26 | a | 31.41 | c | 48.00 | ||||||||
2022 | 29.23 | a | 29.31 | b | 37.76 | 46.22 | 54.98 | 63.18 | 69.37 | 65.68 | 62.17 | 46.66 | 33.59 | a | 30.97 | 47.43 | ||||||||||
2023 | 25.45 | i | 28.11 | a | 35.53 | 42.65 | 53.52 | 62.35 | q | 72.06 | g | 66.50 | b | 61.65 | m | 51.23 | c | 38.37 | c | 31.17 | a | 43.38 | d | |||
2024 | 26.40 | a | 34.16 | 36.44 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.28 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.24 | 32.07 | 38.24 | 45.54 | 53.54 | 62.99 | 68.31 | 66.10 | 59.96 | 49.20 | 37.28 | 29.78 | 47.56 | |||||||||||||
S.D. | 3.62 | 4.03 | 2.72 | 2.37 | 2.05 | 2.12 | 1.33 | 1.40 | 2.02 | 2.20 | 2.54 | 3.09 | 0.89 | |||||||||||||
SKEW | 0.10 | -0.77 | -0.34 | 0.03 | -0.07 | -0.03 | -0.35 | 0.02 | -0.83 | -0.24 | -0.49 | -0.13 | -0.23 | |||||||||||||
MAX | 36.81 | 39.86 | 44.16 | 50.91 | 57.77 | 67.30 | 71.76 | 69.48 | 64.64 | 55.81 | 41.95 | 37.21 | 49.45 | |||||||||||||
MIN | 21.10 | 19.55 | 31.00 | 40.34 | 48.82 | 58.33 | 64.39 | 63.09 | 51.55 | 43.39 | 30.47 | 22.77 | 44.76 | |||||||||||||
YRS | 79 | 83 | 82 | 82 | 83 | 83 | 83 | 83 | 84 | 82 | 83 | 80 | 62 |