YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.17 | a | 39.17 | k |
1939 | ----- | z | 37.12 | 44.23 | a | 50.22 | 53.40 | 55.07 | 62.25 | c | 63.27 | 57.93 | 50.59 | b | 44.85 | 44.53 | 51.22 | a | ||||||||
1940 | 40.27 | 42.79 | 46.50 | 49.25 | 56.21 | 60.17 | 62.32 | 63.58 | 59.35 | 52.56 | 40.72 | 40.23 | 51.16 | |||||||||||||
1941 | 41.53 | a | 43.55 | 47.50 | 48.95 | 52.95 | 56.90 | 64.48 | 61.58 | 54.22 | 49.16 | 45.15 | 40.20 | a | 50.52 | |||||||||||
1942 | 35.73 | 39.29 | 41.47 | 47.25 | 50.73 | 55.02 | 63.52 | 62.89 | 57.70 | 50.56 | 42.68 | 40.18 | 48.92 | |||||||||||||
1943 | 33.28 | a | 40.59 | 41.55 | 48.92 | 49.21 | 54.25 | 59.69 | 58.21 | 58.92 | 50.24 | 43.18 | 36.32 | a | 47.86 | |||||||||||
1944 | 37.37 | 38.55 | 41.48 | 45.65 | 51.70 | a | 56.23 | 61.53 | 60.98 | 60.17 | 53.69 | 41.65 | 36.94 | 48.83 | ||||||||||||
1945 | 39.10 | 41.00 | 40.18 | 44.48 | 53.24 | 55.77 | 61.71 | 61.94 | 55.43 | 48.87 | 41.40 | 39.15 | 48.52 | |||||||||||||
1946 | 37.44 | 39.14 | 41.58 | 45.59 | a | 53.68 | 54.58 | 61.26 | 60.93 | a | 54.78 | 44.50 | 39.82 | 38.48 | a | 47.65 | ||||||||||
1947 | 33.02 | 42.71 | 44.79 | 48.02 | 54.65 | 54.80 | 59.89 | 57.97 | 57.35 | 50.66 | 42.68 | 39.61 | 48.85 | |||||||||||||
1948 | 36.95 | 35.81 | 39.63 | 43.23 | 51.53 | a | 57.97 | 59.92 | 59.63 | 55.82 | 48.16 | 39.45 | 34.22 | b | 46.86 | |||||||||||
1949 | 25.06 | 35.57 | 42.28 | b | 45.43 | a | 49.78 | b | 52.17 | ----- | z | 59.84 | 55.96 | c | 42.95 | a | 47.13 | 36.50 | 44.79 | a | ||||||
1950 | ----- | z | 38.35 | b | 40.37 | a | 45.05 | ----- | z | 57.76 | a | 62.76 | 62.90 | 57.25 | 49.24 | 43.48 | a | 45.43 | a | 50.26 | b | |||||
1951 | 36.40 | 39.21 | 37.35 | 48.73 | 52.18 | a | 59.17 | a | 61.13 | 59.16 | 57.88 | 46.98 | a | 40.60 | 34.73 | 47.80 | ||||||||||
1952 | ----- | z | 40.18 | l | 40.18 | a | 48.12 | a | 51.52 | 54.95 | 61.39 | 60.95 | b | 58.35 | 52.40 | 37.08 | 38.98 | 50.39 | b | |||||||
1953 | 43.73 | a | 40.11 | 40.68 | a | 45.34 | a | 50.10 | 52.53 | 60.89 | 61.81 | 59.25 | 51.45 | 46.17 | 41.26 | 49.44 | ||||||||||
1954 | 37.73 | a | 42.12 | 39.79 | 46.07 | a | 52.81 | 53.77 | 57.58 | 58.50 | 55.66 | a | 49.15 | 46.82 | 38.98 | 48.25 | ||||||||||
1955 | 36.81 | 37.04 | 38.15 | 41.45 | 48.83 | a | 56.75 | 58.05 | 60.15 | 58.04 | b | 50.32 | 40.52 | a | 38.23 | 47.03 | ||||||||||
1956 | 38.66 | 33.78 | 39.85 | a | 47.72 | 54.69 | 54.74 | a | 63.48 | 61.40 | 57.88 | 47.69 | 40.75 | 39.53 | a | 48.35 | ||||||||||
1957 | 30.87 | 40.84 | 43.61 | 48.40 | 54.34 | 57.07 | 59.63 | 58.76 | 62.27 | 49.66 | 41.15 | 40.95 | 48.96 | |||||||||||||
1958 | 41.05 | 46.93 | 41.23 | 46.90 | 56.71 | 60.73 | 65.76 | 65.13 | 58.05 | 52.06 | 44.17 | 43.92 | 51.89 | |||||||||||||
1959 | 40.88 | a | 39.61 | 43.05 | 47.40 | 50.39 | 56.63 | 62.10 | 59.18 | 53.83 | 49.56 | 40.73 | b | 36.81 | 48.35 | |||||||||||
1960 | 34.77 | a | 38.21 | 43.39 | 47.52 | 49.77 | 57.93 | 63.77 | 60.47 | 57.83 | 51.66 | 42.45 | 37.90 | 48.81 | ||||||||||||
1961 | 41.68 | a | 43.36 | 43.39 | 46.42 | 51.58 | 60.65 | 63.32 | 65.79 | 55.03 | 49.37 | a | 40.12 | 39.06 | 49.98 | |||||||||||
1962 | 36.48 | 39.82 | 40.18 | 48.71 | a | 48.74 | 56.73 | 61.87 | 61.29 | 58.90 | 50.31 | 44.90 | e | 41.20 | k | 49.81 | a | |||||||||
1963 | 33.76 | j | 46.44 | j | 42.24 | f | 43.88 | d | 53.87 | 56.27 | 58.79 | 62.42 | 62.55 | b | 51.45 | 44.07 | 39.27 | 52.51 | c | |||||||
1964 | 39.00 | 39.71 | 41.13 | 44.76 | a | 49.81 | 56.00 | 61.94 | 60.50 | 56.28 | a | 52.18 | 40.09 | b | 37.77 | 48.26 | ||||||||||
1965 | 38.69 | b | 40.14 | c | 43.67 | b | 48.88 | a | 49.68 | 56.52 | a | 64.47 | 62.98 | a | 56.60 | e | 53.98 | c | 44.95 | a | 34.80 | c | 49.61 | |||
1966 | 36.37 | 37.86 | 41.86 | b | 49.54 | c | 53.77 | 57.09 | a | 61.22 | a | 61.98 | 60.07 | 51.26 | 44.57 | a | 40.93 | a | 49.71 | |||||||
1967 | 40.28 | a | 41.29 | 40.95 | 42.60 | a | 52.42 | 62.20 | 64.67 | a | 68.61 | 63.03 | 50.52 | b | 44.12 | b | 36.88 | c | 50.63 | |||||||
1968 | 37.38 | a | 45.28 | 46.81 | 45.80 | 53.30 | a | 58.72 | 63.71 | 62.03 | 59.15 | 50.18 | c | 44.35 | 36.89 | c | 50.30 | |||||||||
1969 | 32.84 | 37.48 | b | 43.98 | b | 46.96 | b | 56.98 | a | 62.05 | 61.75 | a | 61.27 | 58.75 | 48.23 | a | 42.88 | 40.12 | b | 49.44 | ||||||
1970 | 39.48 | a | 44.17 | b | 43.76 | b | 43.59 | a | 53.69 | d | 61.46 | c | 63.98 | 63.10 | 53.81 | a | 49.21 | 43.82 | b | 37.33 | a | 49.78 | ||||
1971 | 37.53 | b | 38.14 | c | 39.71 | 46.20 | c | 54.35 | 55.02 | 63.98 | a | 64.27 | 54.25 | f | 48.65 | a | 41.98 | a | 36.82 | 47.88 | a | |||||
1972 | 35.89 | 40.71 | c | 46.08 | 43.84 | a | 55.07 | a | 58.10 | 65.19 | 64.20 | c | 53.67 | a | 48.53 | a | 42.62 | a | 34.30 | c | 49.02 | |||||
1973 | 34.59 | b | 40.62 | g | 41.44 | d | 47.20 | g | 53.65 | e | 57.71 | d | 62.06 | d | 58.64 | c | 57.88 | 49.22 | a | 40.48 | 41.10 | 49.68 | b | |||
1974 | 34.63 | 38.20 | a | 43.40 | 45.42 | d | 50.93 | c | 59.03 | 60.20 | d | 61.88 | a | 61.10 | d | 50.47 | a | 43.71 | b | 39.75 | a | 49.06 | ||||
1975 | 39.45 | b | 39.40 | c | 40.06 | 41.41 | c | 51.83 | a | 56.09 | b | 61.89 | 58.41 | b | 59.03 | a | 48.75 | c | 40.57 | a | 39.64 | b | 48.04 | |||
1976 | 38.85 | 37.48 | a | 39.82 | a | 45.59 | c | 51.83 | b | 53.57 | h | 60.72 | a | 59.66 | c | 58.52 | g | 49.23 | g | 46.37 | k | 38.16 | f | 47.71 | e | |
1977 | 36.93 | c | 41.96 | e | 40.24 | b | 48.83 | f | 48.27 | e | 59.11 | c | 60.70 | d | 66.39 | 54.42 | j | 48.58 | e | 40.02 | g | 42.15 | d | 49.37 | c | |
1978 | 40.76 | 41.98 | 46.12 | f | 46.04 | f | 49.52 | h | 60.04 | q | 60.65 | r | 60.68 | 55.93 | c | 51.30 | a | 36.60 | f | 36.21 | q | 50.13 | g | |||
1979 | 31.04 | h | 38.15 | d | 45.10 | 47.82 | h | ----- | z | 58.20 | j | 61.40 | f | 59.74 | f | 59.36 | w | 51.89 | d | 42.23 | j | 44.17 | d | 44.82 | h | |
1980 | 31.90 | j | 42.50 | i | 41.21 | e | 49.17 | f | 50.94 | d | 54.40 | f | 62.04 | e | 59.40 | e | 59.24 | i | 55.86 | i | 47.48 | j | 40.17 | g | 53.40 | h |
1981 | 41.36 | c | 41.54 | b | 43.34 | i | 47.17 | c | 50.08 | l | 55.25 | f | 60.22 | h | 63.85 | d | 59.40 | i | 50.38 | g | 43.88 | m | 42.42 | r | 48.48 | h |
1982 | 37.05 | l | 40.76 | k | 44.00 | p | 47.71 | m | 56.33 | p | 60.90 | j | 61.69 | r | 64.16 | o | 60.71 | k | 54.68 | l | 40.18 | e | 36.95 | k | 40.18 | k |
1983 | 42.07 | b | 42.52 | e | 45.66 | b | 46.10 | a | 54.62 | f | 55.81 | d | 60.00 | e | 61.82 | f | 55.10 | a | 50.12 | c | 44.12 | i | 35.23 | i | 49.67 | d |
1984 | 38.37 | h | 42.37 | c | 45.95 | b | 44.69 | c | 50.34 | b | 54.67 | d | 61.19 | d | 61.57 | d | 57.94 | e | 47.94 | e | 42.00 | o | 36.50 | h | 51.85 | c |
1985 | 34.94 | g | 36.43 | e | 40.09 | b | 48.83 | d | 51.58 | a | 58.06 | d | 66.28 | a | 62.77 | i | 54.52 | e | 48.34 | b | 34.07 | i | 34.66 | c | 48.76 | c |
1986 | 43.03 | o | 41.05 | h | 47.69 | g | 46.45 | i | 53.74 | f | 60.87 | c | 58.69 | d | 64.72 | m | 54.00 | j | 51.04 | e | 42.48 | g | 36.35 | d | 51.74 | h |
1987 | 35.91 | h | 41.65 | h | 43.13 | h | 50.44 | c | 53.83 | b | 61.52 | i | 60.02 | i | 61.89 | h | 57.83 | d | 52.50 | c | 41.00 | n | 35.02 | b | 49.92 | g |
1988 | 36.22 | b | 40.27 | a | 41.67 | a | 46.62 | a | 49.07 | a | 55.91 | a | 60.98 | 61.02 | h | 57.98 | i | 52.66 | i | 42.34 | a | 36.83 | b | 45.55 | c | |
1989 | 38.00 | k | 32.12 | 41.26 | b | 49.98 | c | 51.40 | 57.96 | g | 58.98 | d | 59.02 | i | 58.72 | e | 46.17 | m | 42.61 | b | 37.00 | c | 46.51 | d | ||
1990 | 38.35 | e | 35.06 | c | 43.21 | l | 48.79 | k | 49.91 | i | 55.10 | o | 65.71 | g | 63.48 | d | 58.93 | g | 46.38 | a | 42.52 | b | 31.73 | c | 42.92 | f |
1991 | 35.58 | a | 45.19 | a | 40.54 | d | 44.22 | a | 48.83 | b | 54.15 | 63.79 | b | 63.87 | e | 60.34 | a | 50.44 | f | 44.84 | h | 39.62 | e | 49.61 | b | |
1992 | 40.20 | c | 44.59 | a | 46.66 | b | 50.02 | g | 57.94 | n | 62.15 | q | 64.69 | r | 63.14 | j | 54.31 | n | 50.35 | e | 42.58 | d | 35.62 | j | 44.87 | g |
1993 | 32.88 | c | 37.42 | d | 43.93 | j | 45.74 | g | 55.81 | j | 56.19 | c | 57.78 | d | 61.79 | c | 59.38 | b | 51.13 | d | 35.90 | d | 36.13 | e | 47.62 | c |
1994 | 39.48 | d | 37.17 | e | 43.67 | k | 47.31 | d | 55.31 | g | 55.87 | c | 64.26 | h | 61.00 | j | 59.78 | g | 47.45 | a | 36.46 | d | 37.62 | g | 43.96 | f |
1995 | 37.12 | w | 42.39 | i | 42.23 | i | 45.48 | d | 54.52 | d | 57.84 | e | 64.67 | d | 59.78 | a | 59.10 | f | 46.94 | f | 45.61 | h | 37.72 | o | 56.46 | g |
1996 | 36.55 | j | 37.42 | i | 43.39 | i | 46.18 | m | 49.80 | f | 56.52 | f | 66.43 | c | 64.19 | 54.96 | b | 48.60 | g | 41.78 | a | 38.40 | e | 53.15 | g | |
1997 | 37.71 | c | 39.54 | a | 41.47 | a | 44.88 | a | 56.93 | a | 56.86 | a | 62.87 | 64.40 | a | 58.89 | c | 48.41 | c | 45.57 | a | 36.74 | 49.52 | |||
1998 | 41.94 | g | 41.10 | c | 41.77 | e | 44.91 | a | 53.02 | h | 56.60 | f | 64.78 | h | 62.85 | e | 60.55 | b | 46.36 | f | 42.17 | c | 35.19 | e | 46.93 | e |
1999 | 38.27 | g | 37.89 | a | 39.62 | c | 45.67 | 48.81 | b | 55.40 | e | 61.40 | e | 63.24 | d | 57.58 | d | 49.24 | d | 45.35 | c | 37.14 | j | 50.42 | b | |
2000 | 35.96 | g | 40.25 | e | 40.73 | c | 49.22 | l | 51.64 | c | 58.18 | b | 61.30 | d | 61.70 | d | 57.07 | g | 47.86 | c | 37.37 | g | 36.74 | h | 51.67 | e |
2001 | 38.50 | f | 38.04 | b | 44.45 | c | 43.50 | b | 53.83 | b | 54.89 | c | 61.66 | c | 61.76 | 58.27 | 47.70 | c | 43.29 | d | 37.55 | c | 49.54 | a | ||
2002 | 36.52 | g | 37.44 | d | 39.18 | c | 45.85 | 49.23 | a | 57.09 | b | 63.26 | 62.74 | 58.47 | 48.97 | a | 44.52 | a | 41.13 | d | 49.81 | a | ||||
2003 | 42.60 | e | 40.52 | b | 44.77 | c | 45.88 | b | 52.55 | b | 60.73 | b | 66.74 | 64.90 | b | 61.05 | a | 53.68 | c | 41.58 | d | ----- | z | 52.27 | a | |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.61 | i | 38.97 | 36.16 | 37.56 | j | ||
2006 | 39.66 | ----- | z | 38.44 | 45.90 | d | 47.44 | v | ----- | z | 63.85 | a | 60.80 | a | 55.50 | f | 46.13 | 41.20 | 36.16 | 46.52 | d | |||||
2007 | 33.44 | 38.77 | 42.71 | e | 44.52 | 50.79 | 54.18 | h | 63.30 | a | 60.08 | 54.58 | 46.24 | ----- | z | ----- | z | 48.27 | c | |||||||
2008 | 32.53 | 37.78 | 37.76 | 40.33 | 51.15 | 53.53 | 61.66 | 61.06 | 56.43 | 47.18 | 43.90 | 33.73 | 46.42 | |||||||||||||
2009 | 35.55 | 37.23 | 37.77 | 43.47 | 51.81 | 57.33 | 64.85 | 61.74 | 57.73 | 46.87 | 40.47 | 32.20 | a | 47.25 | ||||||||||||
2010 | 41.77 | 40.91 | 40.74 | 43.18 | 47.34 | 53.47 | 60.98 | 60.63 | 56.32 | 48.45 | 39.58 | 38.50 | 47.66 | |||||||||||||
2011 | 37.50 | 34.62 | 39.32 | 39.92 | 46.11 | 53.98 | 58.21 | 60.94 | 59.53 | 48.58 | 38.78 | 33.94 | 45.95 | |||||||||||||
2012 | 38.97 | 37.31 | 37.58 | 45.60 | 50.15 | 48.30 | t | 60.65 | a | 63.29 | 59.30 | 49.84 | b | 43.50 | c | 36.98 | d | 47.56 | a | |||||||
2013 | 33.90 | 39.00 | 42.60 | 46.88 | 54.89 | 57.22 | 63.71 | 64.24 | 57.62 | 47.53 | 40.68 | 32.79 | 48.42 | |||||||||||||
2014 | 38.15 | 37.77 | 44.69 | 47.22 | 54.48 | 56.58 | 66.34 | 65.27 | 60.82 | 53.94 | 41.02 | 39.58 | 50.49 | |||||||||||||
2015 | 41.65 | 42.36 | 46.89 | 46.22 | 53.81 | 63.27 | 66.60 | 64.77 | 56.82 | 54.23 | 39.70 | 39.31 | 51.30 | |||||||||||||
2016 | 36.26 | 42.07 | 42.06 | 49.82 | 53.47 | 57.32 | 60.34 | 62.97 | 54.32 | 48.40 | 45.23 | 33.97 | 48.85 | |||||||||||||
2017 | 31.53 | a | 37.57 | 40.61 | 43.05 | 55.60 | 59.02 | 63.37 | 66.35 | 59.85 | 48.45 | 42.32 | 35.65 | 48.61 | ||||||||||||
2018 | 40.08 | 38.75 | 40.53 | 47.70 | 55.29 | 57.68 | 66.19 | 64.95 | 56.02 | 50.29 | 40.98 | 39.52 | 49.83 | |||||||||||||
2019 | 38.65 | 32.07 | 39.77 | 47.22 | 54.13 | a | 58.58 | 62.60 | 63.92 | a | 55.85 | 47.33 | v | 40.90 | 39.16 | 48.44 | a | |||||||||
2020 | 39.87 | 38.28 | 40.18 | 47.43 | 53.61 | 57.53 | 64.13 | 64.06 | o | 58.14 | w | 49.79 | 40.30 | 38.94 | 47.01 | b | ||||||||||
2021 | 42.07 | q | 38.17 | v | 40.24 | 47.12 | 51.89 | 62.37 | o | 64.90 | e | 61.85 | k | 57.29 | a | 47.13 | 45.05 | 36.40 | 48.75 | d | ||||||
2022 | 37.16 | 37.93 | 42.92 | 41.83 | c | 49.24 | 57.83 | 65.53 | 67.00 | 61.47 | 54.31 | 35.98 | 36.16 | b | 48.95 | |||||||||||
2023 | 37.28 | f | 36.92 | h | 37.33 | h | 43.95 | 56.31 | 59.07 | 65.08 | 66.87 | 57.53 | 50.37 | 41.98 | 42.35 | 53.72 | c | |||||||||
2024 | 38.79 | 40.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.49 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.51 | 39.44 | 41.83 | 46.00 | 52.20 | 57.05 | 62.38 | 62.22 | 57.77 | 49.65 | 42.08 | 38.02 | 48.91 | |||||||||||||
S.D. | 3.33 | 2.89 | 2.47 | 2.36 | 2.45 | 2.37 | 2.29 | 2.34 | 2.23 | 2.24 | 2.44 | 2.88 | 1.31 | |||||||||||||
SKEW | -0.92 | 0.01 | 0.47 | -0.35 | -0.09 | 0.40 | -0.02 | 0.34 | 0.14 | -0.08 | -0.33 | 0.22 | 0.03 | |||||||||||||
MAX | 43.73 | 46.93 | 47.50 | 50.44 | 56.98 | 63.27 | 66.74 | 68.61 | 63.03 | 54.31 | 47.13 | 45.43 | 51.89 | |||||||||||||
MIN | 25.06 | 32.07 | 37.35 | 39.92 | 46.11 | 52.17 | 57.58 | 57.97 | 53.67 | 42.95 | 35.90 | 31.73 | 45.95 | |||||||||||||
YRS | 63 | 72 | 71 | 71 | 69 | 67 | 73 | 71 | 67 | 72 | 69 | 70 | 41 |