YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | 50.42 | 52.93 | 55.55 | 59.80 | 68.35 | 63.23 | 56.68 | 52.05 | 46.25 | 40.73 | 54.60 | b | ||||||||||
1942 | 37.65 | a | 40.43 | 43.16 | 50.55 | 53.55 | 56.62 | 65.69 | 66.44 | 59.57 | 54.69 | 43.23 | 41.87 | a | 51.12 | |||||||||||
1943 | 33.35 | a | 41.75 | 43.47 | 51.43 | a | 52.13 | 57.02 | a | 62.39 | 62.19 | g | 60.37 | 52.28 | a | 43.88 | a | 38.92 | 48.82 | a | ||||||
1944 | 38.87 | 39.98 | 42.82 | 48.55 | 53.02 | 57.47 | 62.89 | 61.81 | 60.47 | 55.02 | 43.75 | b | 36.63 | a | 50.11 | |||||||||||
1945 | 40.00 | 41.45 | 42.69 | 45.82 | 55.89 | 57.10 | 63.74 | 62.45 | 56.17 | 52.21 | 43.40 | 39.15 | 50.00 | |||||||||||||
1946 | 39.98 | 41.48 | 43.52 | 47.82 | 55.81 | 57.18 | 63.00 | 62.71 | 58.52 | 48.02 | 40.85 | 38.63 | 49.79 | |||||||||||||
1947 | 34.89 | 43.23 | 47.21 | 50.29 | b | 57.08 | 58.82 | 62.27 | 61.82 | 58.98 | 52.79 | 43.97 | 41.76 | 51.09 | ||||||||||||
1948 | 37.33 | a | 38.29 | 42.69 | 45.84 | a | 52.48 | 61.34 | b | 61.69 | 61.69 | 57.47 | 50.37 | 42.07 | 36.03 | 48.94 | ||||||||||
1949 | 28.87 | 36.70 | 45.19 | 49.85 | 56.16 | 57.48 | 60.84 | 62.71 | 60.00 | 47.58 | 49.70 | 38.03 | 49.43 | |||||||||||||
1950 | 25.84 | 39.32 | 41.89 | 46.55 | 51.24 | 58.90 | 62.27 | 63.98 | 58.22 | 49.97 | 43.27 | 44.32 | 48.81 | |||||||||||||
1951 | 37.47 | 40.89 | 39.50 | 49.35 | 53.47 | 59.65 | 63.47 | 61.05 | 59.67 | 50.94 | 43.27 | 36.32 | 49.59 | |||||||||||||
1952 | 35.60 | 40.31 | 41.92 | 48.72 | 53.68 | 56.02 | 62.60 | 63.50 | 59.77 | 53.97 | 40.13 | 40.53 | 49.73 | |||||||||||||
1953 | 43.97 | 41.34 | 43.47 | 47.45 | 53.11 | 55.17 | 61.75 | a | 62.81 | 59.62 | 52.65 | 46.42 | 41.48 | 50.77 | ||||||||||||
1954 | 35.71 | 42.27 | 40.63 | 45.85 | 53.35 | 55.02 | 58.61 | 59.95 | 58.09 | a | 49.13 | 47.72 | 38.87 | 48.77 | ||||||||||||
1955 | 37.94 | 37.14 | 38.16 | 43.77 | 50.56 | 57.03 | 58.35 | 59.34 | 56.37 | 50.11 | 38.07 | 37.81 | 47.05 | |||||||||||||
1956 | 37.60 | 34.48 | 40.45 | 48.70 | 56.56 | 56.32 | 63.29 | 62.29 | 57.50 | 49.63 | 40.98 | 39.11 | 48.91 | |||||||||||||
1957 | 30.60 | a | 37.80 | 43.50 | 49.27 | 56.94 | 59.23 | 60.08 | 60.45 | 61.65 | 50.18 | a | 41.53 | 42.10 | 49.44 | |||||||||||
1958 | 41.92 | 46.04 | 42.87 | 48.35 | 58.61 | 62.78 | 67.92 | 65.50 | 59.17 | 52.21 | 42.63 | 43.57 | a | 52.63 | ||||||||||||
1959 | 39.58 | 39.66 | 43.73 | 48.90 | 52.34 | 58.88 | 64.08 | a | 61.76 | 56.79 | a | 51.35 | 42.60 | 38.61 | 49.86 | |||||||||||
1960 | 37.19 | 40.52 | a | 42.71 | 48.93 | 52.13 | 58.10 | 63.82 | 61.85 | 56.78 | 52.11 | 42.80 | 38.08 | 49.59 | ||||||||||||
1961 | 42.27 | 44.18 | 45.13 | 47.13 | 53.32 | 61.22 | 64.58 | 66.06 | 56.88 | 49.82 | 40.50 | 39.16 | 50.86 | |||||||||||||
1962 | 37.03 | 41.77 | 41.76 | 49.57 | 50.37 | 57.08 | 61.48 | 62.52 | 59.20 | 52.24 | 45.32 | 40.90 | 49.94 | |||||||||||||
1963 | 32.77 | 46.77 | 43.23 | 47.18 | 53.74 | 57.53 | 60.48 | 62.42 | 61.72 | 52.79 | 44.60 | 39.37 | 50.22 | |||||||||||||
1964 | 40.02 | 39.98 | 42.53 | 45.38 | 50.66 | 56.65 | 61.60 | 60.60 | 56.20 | 50.76 | 39.93 | 35.21 | 48.29 | |||||||||||||
1965 | 38.29 | 40.84 | 43.48 | 48.63 | 50.77 | 57.97 | 63.94 | 63.69 | 55.58 | 53.84 | 46.40 | 38.47 | 50.16 | |||||||||||||
1966 | 38.56 | 40.57 | 43.39 | 48.67 | 52.79 | 57.58 | 60.95 | 62.52 | 60.02 | 50.40 | 44.97 | 43.35 | 50.31 | |||||||||||||
1967 | 40.95 | 41.14 | 40.65 | 44.43 | 53.60 | 61.40 | 63.84 | 67.15 | 62.57 | 52.39 | 44.58 | 39.15 | 50.99 | |||||||||||||
1968 | 38.73 | 44.03 | 46.71 | 46.35 | 53.63 | 58.30 | 64.13 | 61.21 | 58.27 | 48.94 | 43.85 | 35.05 | 49.93 | |||||||||||||
1969 | 31.69 | 38.45 | 43.84 | 47.83 | 55.73 | 62.73 | 61.94 | 60.97 | 58.65 | 49.18 | 43.98 | 40.76 | 49.65 | |||||||||||||
1970 | 38.02 | 43.30 | 43.92 | 45.32 | 52.55 | 61.05 | 63.13 | 62.65 | 55.73 | 48.24 | 43.25 | 36.94 | 49.51 | |||||||||||||
1971 | 38.11 | 40.05 | 40.27 | 46.28 | 53.42 | 54.57 | 63.40 | 66.00 | 56.13 | 48.39 | 43.28 | 35.60 | 48.79 | |||||||||||||
1972 | 34.16 | 39.03 | 44.56 | 44.40 | 54.69 | 57.70 | 62.81 | 63.63 | 55.00 | 47.77 | 43.07 | 35.37 | 48.52 | |||||||||||||
1973 | 36.40 | 40.89 | 44.05 | 47.38 | 54.21 | 57.58 | 62.40 | 59.48 | 58.58 | 50.06 | 40.25 | 41.63 | 49.41 | |||||||||||||
1974 | 35.83 | a | 40.25 | 43.06 | 47.08 | 50.87 | 57.95 | 61.37 | 63.63 | 61.90 | 51.03 | 44.75 | 41.27 | 49.92 | ||||||||||||
1975 | 38.08 | 39.09 | 41.13 | 43.45 | 52.68 | 57.22 | 63.79 | 60.61 | 58.77 | 50.05 | 42.48 | a | 39.79 | 48.93 | ||||||||||||
1976 | 39.97 | 39.24 | 40.02 | 46.83 | 53.00 | 55.12 | 61.92 | 60.48 | 59.17 | 50.40 | 43.62 | 40.18 | 49.16 | |||||||||||||
1977 | 33.77 | 44.25 | 42.11 | 49.87 | 50.81 | 59.25 | 61.08 | 67.10 | 58.55 | j | 49.29 | 41.43 | 39.27 | 48.93 | a | |||||||||||
1978 | 40.26 | 43.20 | 45.87 | 47.98 | 52.15 | 61.50 | 63.13 | 62.61 | 56.53 | 51.60 | 38.75 | 33.98 | 49.80 | |||||||||||||
1979 | 31.40 | 39.57 | 46.10 | 47.82 | 54.48 | 58.80 | 63.68 | 62.37 | 60.12 | 52.29 | 40.68 | 42.65 | 50.00 | |||||||||||||
1980 | 32.95 | 41.33 | 43.00 | 50.63 | 53.26 | 56.62 | 62.27 | 61.35 | 57.83 | 50.79 | 44.85 | 41.92 | 49.73 | |||||||||||||
1981 | 41.18 | 41.48 | 46.45 | 47.72 | 52.76 | 56.22 | 61.18 | 66.00 | 59.15 | 48.34 | 45.00 | 38.98 | 50.37 | |||||||||||||
1982 | 36.52 | b | 39.45 | 42.16 | 44.52 | 52.16 | 60.82 | 60.29 | 62.35 | 58.02 | 50.13 | 39.57 | 37.98 | 48.66 | ||||||||||||
1983 | 41.16 | 43.93 | 46.40 | 47.82 | 55.48 | 57.32 | 60.44 | 62.65 | 55.62 | 48.06 | 45.20 | 32.27 | a | 49.69 | ||||||||||||
1984 | 40.53 | 41.86 | 46.15 | 46.68 | 50.50 | a | 56.45 | a | 62.44 | 62.16 | 57.32 | 47.66 | 42.02 | 34.58 | 49.03 | |||||||||||
1985 | 34.60 | 37.75 | b | 41.02 | a | 47.50 | 53.03 | 57.74 | a | 66.55 | 62.47 | 55.20 | 49.73 | a | 33.12 | b | 32.68 | a | 47.62 | |||||||
1986 | 41.90 | b | 40.23 | h | 47.97 | a | 46.74 | a | 53.30 | a | 60.85 | 59.70 | a | 66.55 | 56.67 | d | 51.67 | b | 43.60 | a | 38.02 | b | 51.54 | a | ||
1987 | 38.47 | b | 43.52 | 45.97 | 50.67 | a | 55.48 | b | 60.36 | a | 62.65 | 63.37 | 60.18 | 52.26 | 46.40 | 37.06 | 51.37 | |||||||||
1988 | 37.47 | a | 41.00 | a | 44.16 | 48.35 | 53.55 | 57.57 | 62.74 | 62.95 | a | 57.92 | 53.29 | 44.30 | 39.23 | 50.21 | ||||||||||
1989 | 38.97 | 33.20 | a | 41.33 | a | 50.70 | 53.97 | 60.93 | 61.53 | 62.34 | 59.98 | 50.10 | b | 45.03 | 40.03 | a | 49.84 | |||||||||
1990 | 40.89 | 37.48 | 45.43 | a | 49.86 | a | 53.34 | 58.73 | b | 66.02 | 65.37 | 60.57 | a | 49.08 | 44.78 | a | 32.56 | 50.34 | ||||||||
1991 | 37.10 | 45.64 | 41.65 | a | 47.07 | 52.34 | 56.23 | 64.50 | a | 65.35 | a | 59.31 | a | 49.84 | 44.91 | a | 40.95 | 50.41 | ||||||||
1992 | 41.37 | 44.81 | 47.15 | 51.30 | 57.02 | 62.97 | 63.97 | 64.68 | 57.73 | 51.74 | 43.08 | 37.07 | a | 51.91 | ||||||||||||
1993 | 34.38 | a | 38.48 | 45.23 | 48.50 | a | 57.90 | a | 58.88 | 59.63 | 63.40 | 59.05 | 52.53 | a | 38.33 | 38.47 | a | 49.57 | ||||||||
1994 | 42.38 | a | 37.22 | a | 45.76 | 50.57 | 55.24 | 57.83 | 65.61 | 64.26 | 60.80 | b | 49.26 | 40.02 | 39.58 | a | 50.71 | |||||||||
1995 | 41.02 | b | 42.61 | a | 44.31 | 48.47 | 56.72 | a | 59.80 | 65.37 | a | ----- | z | 61.30 | 50.55 | a | 47.68 | 40.32 | a | 50.74 | a | |||||
1996 | 39.02 | a | 40.00 | 44.77 | 50.05 | 50.81 | 58.03 | a | 65.40 | 64.41 | b | 55.97 | 49.71 | 41.60 | 38.25 | a | 49.84 | |||||||||
1997 | 40.48 | 40.96 | 44.39 | 47.57 | a | 57.45 | b | 58.93 | 63.30 | a | 66.52 | b | 61.07 | a | 49.55 | c | 46.25 | b | 39.88 | a | 51.36 | |||||
1998 | 41.05 | a | 44.37 | a | 45.38 | a | 48.22 | 53.23 | 59.36 | a | 66.76 | 64.98 | a | 60.71 | b | 51.05 | b | 45.60 | a | 38.58 | 51.61 | |||||
1999 | 40.90 | 41.13 | a | 42.45 | b | 46.76 | a | 50.25 | a | 56.98 | 61.35 | 63.94 | f | 57.86 | a | 49.58 | 46.85 | 40.52 | 48.60 | a | ||||||
2000 | 37.87 | 41.74 | 43.00 | 49.35 | 53.15 | a | 58.80 | b | 62.82 | 62.34 | 58.20 | 50.34 | 39.97 | 38.82 | 49.70 | |||||||||||
2001 | 39.37 | 38.43 | 44.13 | 46.40 | a | 54.24 | b | 56.69 | a | 61.83 | b | 63.37 | a | 57.48 | 49.44 | 45.85 | 39.68 | 49.74 | ||||||||
2002 | 41.12 | b | 40.21 | 40.48 | a | 46.93 | 52.32 | a | 60.22 | 63.79 | 62.71 | b | 58.72 | a | 48.85 | 45.95 | b | 41.29 | b | 50.22 | ||||||
2003 | 43.88 | a | 39.85 | a | 46.32 | a | 47.78 | 53.81 | 61.40 | a | 66.00 | 64.80 | a | 60.55 | 53.88 | a | 40.00 | a | 40.19 | 51.54 | ||||||
2004 | 38.39 | 42.66 | 47.03 | a | 50.55 | a | 55.38 | a | 61.27 | b | 65.97 | 66.47 | 57.33 | a | 52.18 | a | 42.86 | b | 41.14 | b | 51.77 | |||||
2005 | 40.61 | 40.05 | 47.60 | 48.82 | b | 56.83 | b | 57.88 | a | 63.81 | 66.12 | a | 56.58 | 52.47 | a | 41.43 | a | 38.76 | b | 50.91 | ||||||
2006 | 43.58 | 38.64 | 43.23 | a | 48.34 | a | 54.19 | b | 60.98 | d | 64.90 | a | 63.15 | a | 59.52 | a | 50.55 | c | 42.18 | b | 38.84 | b | 50.68 | |||
2007 | 36.85 | 42.25 | 45.98 | b | 48.08 | 53.85 | 58.43 | 65.47 | a | 62.60 | 57.57 | a | 48.69 | d | 42.35 | 39.66 | 50.15 | |||||||||
2008 | 36.94 | 41.12 | 41.52 | 43.98 | 54.13 | 56.40 | 62.63 | 64.11 | 57.62 | 49.00 | 47.02 | 35.55 | 49.17 | |||||||||||||
2009 | 36.78 | a | 38.84 | 39.92 | 46.82 | 53.72 | a | 61.52 | 66.69 | 64.18 | 59.65 | 49.65 | 44.93 | 34.32 | 49.75 | |||||||||||
2010 | 44.81 | 43.39 | 44.65 | 47.20 | 50.92 | 56.52 | 62.45 | 63.08 | 58.64 | a | 50.76 | 41.83 | 41.50 | 50.48 | ||||||||||||
2011 | 39.79 | 37.41 | 43.84 | 43.57 | 50.24 | 57.07 | ----- | z | ----- | z | ----- | z | 49.76 | 41.55 | a | 36.98 | 44.47 | c | ||||||||
2012 | 38.15 | 41.40 | 41.15 | 48.45 | a | 52.61 | 56.20 | 62.13 | 64.60 | 58.80 | 50.48 | 44.78 | 40.08 | a | 49.90 | |||||||||||
2013 | ----- | z | 42.08 | o | 44.75 | k | 48.35 | j | 55.30 | k | 60.00 | j | 66.09 | o | ----- | z | 59.67 | r | 46.61 | i | 40.50 | u | 34.57 | j | ----- | z |
2014 | 41.24 | l | 37.63 | i | 45.69 | j | 49.93 | h | 57.95 | j | 59.02 | i | 66.83 | j | 67.90 | j | 62.03 | l | 55.47 | l | 45.34 | n | 41.24 | j | ----- | z |
2015 | 41.92 | k | 46.42 | j | 49.32 | l | 49.40 | j | 55.65 | n | 64.13 | k | 68.05 | i | 67.00 | j | 57.30 | j | 54.05 | k | 43.29 | m | 40.82 | i | ----- | z |
2016 | 42.53 | m | 45.42 | k | 46.13 | h | 54.05 | k | 57.17 | j | 60.18 | h | 63.76 | l | 65.96 | h | 57.95 | i | 51.83 | k | 48.97 | k | 36.36 | j | ----- | z |
2017 | 34.60 | k | 38.69 | j | 45.32 | i | 48.27 | j | 55.14 | i | 59.90 | i | 64.55 | k | 67.26 | h | 60.85 | j | 50.39 | i | 44.53 | m | 37.17 | k | ----- | z |
2018 | 43.24 | j | 38.71 | i | 43.39 | i | 48.95 | i | 58.36 | i | 59.62 | i | 66.98 | j | 66.85 | h | 57.89 | k | 50.80 | i | 46.87 | k | 41.50 | k | ----- | z |
2019 | 41.33 | k | 33.11 | j | 43.58 | k | 49.17 | j | 56.86 | i | 60.00 | j | 64.24 | j | 65.86 | i | 60.32 | k | 47.31 | j | 42.88 | n | 40.55 | j | ----- | z |
2020 | 42.00 | j | 40.13 | j | 41.68 | i | 47.91 | s | 55.03 | l | 59.64 | h | 64.41 | i | 64.12 | j | 62.71 | i | 52.32 | l | 44.78 | l | 40.81 | j | ----- | z |
2021 | 41.29 | l | 39.18 | i | 41.83 | h | 48.84 | h | 52.80 | k | 62.05 | j | 65.85 | k | 65.86 | i | 58.00 | i | 50.05 | j | 45.61 | k | 36.93 | j | ----- | z |
2022 | 40.15 | k | 38.13 | i | 44.80 | h | 43.70 | j | 51.38 | k | 59.00 | i | 67.47 | k | 68.09 | h | 62.19 | i | 54.81 | j | 38.79 | k | 35.38 | j | ----- | z |
2023 | 41.38 | k | 37.37 | i | 41.04 | h | 44.58 | j | 59.48 | i | 60.88 | i | 65.82 | l | 66.74 | h | 58.55 | j | 52.32 | i | 40.95 | k | 43.45 | k | ----- | z |
2024 | 41.10 | j | 41.98 | i | 42.45 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.04 | 40.74 | 43.64 | 47.87 | 53.62 | 58.43 | 63.06 | 63.23 | 58.51 | 50.66 | 43.21 | 38.84 | 49.94 | |||||||||||||
S.D. | 3.57 | 2.53 | 2.31 | 2.00 | 2.02 | 2.01 | 2.07 | 1.90 | 1.78 | 1.74 | 2.69 | 2.60 | 1.00 | |||||||||||||
SKEW | -0.87 | -0.16 | 0.21 | -0.15 | 0.35 | 0.41 | 0.25 | 0.24 | 0.06 | 0.38 | -0.63 | -0.52 | -0.01 | |||||||||||||
MAX | 44.81 | 46.77 | 50.42 | 52.93 | 58.61 | 62.97 | 68.35 | 67.15 | 62.57 | 55.02 | 49.70 | 44.32 | 52.63 | |||||||||||||
MIN | 25.84 | 33.20 | 38.16 | 43.45 | 50.24 | 54.57 | 58.35 | 59.34 | 55.00 | 47.58 | 33.13 | 32.27 | 47.05 | |||||||||||||
YRS | 71 | 70 | 72 | 72 | 72 | 72 | 71 | 68 | 70 | 72 | 72 | 72 | 65 |