YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | 77.87 | 77.90 | 72.23 | 61.19 | 47.50 | 46.80 | a | 65.21 | e | ||||||
1941 | 44.10 | a | 47.39 | 47.35 | 49.17 | 60.74 | 64.57 | 74.87 | 71.55 | 65.90 | 55.10 | 49.33 | 42.06 | 56.01 | ||||||||||||
1942 | 42.52 | 38.93 | 42.42 | 48.43 | 56.60 | a | 64.17 | 76.74 | 73.77 | 68.70 | 58.42 | 49.90 | 42.30 | a | 55.24 | |||||||||||
1943 | 41.10 | 45.81 | a | 48.45 | 55.13 | 60.00 | 67.52 | a | 75.35 | 74.26 | 70.90 | a | 59.57 | a | 49.00 | b | 43.32 | 57.53 | ||||||||
1944 | 39.13 | 40.24 | 42.41 | b | 47.80 | 57.07 | b | 61.70 | 73.81 | 76.25 | c | 68.56 | c | 60.97 | b | 45.41 | c | 42.35 | 54.64 | |||||||
1945 | 40.37 | a | 42.00 | d | 44.63 | a | 51.19 | c | 58.32 | 64.93 | b | 77.83 | a | 78.16 | 71.48 | a | 61.90 | 47.00 | 40.52 | 56.53 | ||||||
1946 | 40.31 | b | 39.04 | a | 45.30 | a | 58.43 | b | 58.71 | 70.41 | a | 76.90 | a | 77.17 | a | 72.07 | a | 54.65 | 44.60 | 45.90 | a | 56.96 | ||||
1947 | 36.97 | 46.19 | a | 46.74 | 49.89 | b | 61.71 | 65.21 | a | 76.63 | a | 73.65 | 73.20 | 60.81 | 44.27 | 39.68 | 56.24 | |||||||||
1948 | 39.90 | 40.17 | 42.37 | a | 50.97 | 57.30 | a | 63.90 | a | 72.74 | 75.90 | a | 72.76 | a | 62.97 | 43.83 | a | 41.55 | 55.36 | |||||||
1949 | 34.52 | 38.64 | 43.84 | 54.40 | 61.71 | 71.70 | 79.16 | 75.35 | 72.57 | 55.61 | 51.63 | 39.94 | 56.59 | |||||||||||||
1950 | 39.06 | 45.36 | 44.87 | 51.13 | 55.29 | 66.83 | 74.90 | 74.97 | 65.97 | 64.23 | 52.93 | 47.32 | 56.91 | |||||||||||||
1951 | 40.10 | 41.80 | c | 45.87 | 52.27 | 59.90 | 64.67 | 77.58 | 74.97 | 69.53 | 59.42 | 49.43 | 41.35 | 56.41 | ||||||||||||
1952 | 41.32 | 41.76 | 40.97 | 53.87 | 64.26 | 67.87 | 76.52 | 78.10 | 73.30 | 66.42 | 46.43 | 41.97 | 57.73 | |||||||||||||
1953 | 41.81 | 40.32 | 46.00 | 50.33 | 55.06 | 66.57 | 77.74 | 73.58 | 69.67 | 57.03 | 47.87 | 35.74 | 55.14 | |||||||||||||
1954 | 41.55 | 48.21 | 46.90 | 55.87 | 59.77 | 65.73 | 77.68 | 73.74 | 72.17 | 60.77 | 50.87 | 42.58 | 57.99 | |||||||||||||
1955 | 36.77 | 36.71 | 46.23 | a | 49.70 | 59.06 | 66.37 | 71.35 | 73.97 | 68.97 | 62.13 | 47.50 | 44.52 | 55.27 | ||||||||||||
1956 | 44.84 | 39.21 | 46.87 | 52.23 | 60.77 | 70.03 | a | 76.65 | 72.39 | 72.37 | 57.23 | 44.80 | 40.48 | 56.49 | ||||||||||||
1957 | 43.16 | 49.00 | 46.65 | 50.40 | 57.97 | 68.70 | 76.55 | 72.90 | 68.03 | 57.48 | 45.47 | 46.39 | 56.89 | |||||||||||||
1958 | 42.06 | 46.43 | 44.61 | 51.80 | 65.48 | 69.40 | 75.94 | 76.26 | 70.30 | 60.94 | 46.47 | 43.87 | 57.80 | |||||||||||||
1959 | 40.45 | 38.00 | 46.06 | 58.17 | 57.29 | 74.63 | 80.87 | 74.68 | 68.20 | 59.39 | 49.43 | 43.81 | 57.58 | |||||||||||||
1960 | 36.90 | 35.59 | 48.68 | 52.23 | 58.55 | 71.53 | 76.03 | 74.65 | 69.63 | 56.71 | 47.80 | 40.48 | 55.73 | |||||||||||||
1961 | 45.65 | 43.96 | 46.19 | 52.83 | 57.58 | 70.43 | 76.84 | 73.26 | 66.60 | 57.23 | 46.20 | 42.00 | 56.56 | |||||||||||||
1962 | 39.77 | 44.43 | 41.06 | 56.13 | 57.89 | c | 67.37 | 74.77 | 77.90 | 71.73 | 60.03 | 52.43 | 44.74 | 57.36 | ||||||||||||
1963 | 36.00 | 46.50 | 45.03 | 48.37 | 61.26 | 62.27 | 76.10 | 71.65 | 70.63 | 60.77 | 46.37 | 38.35 | 55.27 | |||||||||||||
1964 | 33.00 | 33.03 | 40.06 | 48.33 | 55.23 | 62.03 | 74.26 | 69.00 | 63.47 | 58.13 | 38.30 | 35.55 | 50.87 | |||||||||||||
1965 | 36.35 | 34.96 | 39.19 | 51.40 | 56.94 | 62.40 | 76.65 | 75.48 | 68.10 | 61.94 | 52.80 | 43.06 | 54.94 | |||||||||||||
1966 | 39.70 | a | 38.75 | 47.52 | 54.03 | a | 62.81 | 68.97 | 77.65 | 76.10 | 71.97 | 57.61 | 48.23 | d | 42.81 | 57.18 | ||||||||||
1967 | 39.44 | f | 41.29 | d | 45.06 | 45.52 | a | 58.87 | 65.47 | 76.06 | 75.71 | 70.27 | 61.77 | 50.73 | 38.06 | 57.17 | a | |||||||||
1968 | 41.13 | 49.34 | 47.61 | 51.30 | 58.29 | 67.73 | 74.07 | b | 70.97 | 68.17 | 60.00 | 49.00 | 39.42 | 56.42 | ||||||||||||
1969 | 45.06 | 40.57 | 43.29 | 53.60 | 62.03 | a | 64.03 | a | 75.00 | a | 77.19 | 69.90 | a | 54.10 | a | 48.83 | 42.07 | a | 56.31 | |||||||
1970 | 38.17 | a | 46.14 | 43.48 | 46.90 | 59.03 | 70.36 | b | 76.48 | 78.16 | 68.20 | 55.71 | 49.72 | a | 42.84 | 56.27 | ||||||||||
1971 | 39.97 | 41.75 | 45.57 | a | 50.93 | 57.50 | a | 67.47 | 77.20 | a | 74.90 | 69.77 | 55.84 | 46.52 | a | 40.10 | 55.63 | |||||||||
1972 | 36.97 | 43.69 | 55.06 | 54.37 | 61.32 | 70.23 | 69.42 | 72.61 | 70.67 | 59.94 | 45.40 | 40.16 | 56.65 | |||||||||||||
1973 | 38.10 | 44.79 | 42.52 | 49.28 | a | 61.71 | 69.17 | 74.16 | 74.19 | 67.27 | 59.19 | 46.97 | 42.23 | 55.80 | ||||||||||||
1974 | 40.77 | 39.93 | 47.63 | a | 52.40 | 58.81 | 72.90 | 74.61 | 71.94 | 69.23 | 59.52 | 49.13 | 37.35 | 56.19 | ||||||||||||
1975 | 38.94 | 40.18 | 42.52 | 44.37 | 57.84 | 65.23 | 74.90 | 73.55 | 68.97 | 56.13 | 45.40 | 41.06 | 54.09 | |||||||||||||
1976 | 40.23 | a | 43.34 | 43.58 | 49.00 | 60.29 | 67.33 | 73.71 | 70.90 | 65.17 | 55.42 | 45.63 | ----- | z | 55.87 | a | ||||||||||
1977 | 37.67 | a | 42.25 | 41.42 | 52.93 | 56.13 | 71.53 | 78.23 | 76.23 | 68.93 | 61.55 | 49.60 | 45.06 | 56.79 | ||||||||||||
1978 | 42.60 | a | 43.04 | 50.00 | 50.03 | 58.71 | 68.97 | 74.77 | 72.97 | 67.70 | 61.77 | a | 45.37 | 36.39 | 56.03 | |||||||||||
1979 | 34.58 | 37.43 | 42.32 | 48.37 | 58.55 | 69.00 | 72.20 | a | 71.77 | 74.23 | 57.87 | 42.25 | b | 42.16 | 54.23 | |||||||||||
1980 | 42.13 | 43.89 | a | 41.35 | 50.24 | a | 53.29 | 65.67 | 74.06 | 68.26 | 69.90 | 60.74 | 49.83 | 48.20 | a | 55.63 | ||||||||||
1981 | 45.23 | 44.93 | 47.19 | 56.20 | 60.57 | a | 72.60 | 76.94 | 77.84 | 72.27 | 57.03 | 51.80 | 45.13 | 58.98 | ||||||||||||
1982 | 39.48 | b | 45.59 | a | 46.16 | 52.20 | 57.94 | 63.60 | 74.00 | 75.94 | 68.93 | a | 56.45 | b | 47.60 | 39.55 | b | 55.62 | ||||||||
1983 | ----- | z | 41.81 | b | 44.20 | a | 44.59 | a | 56.97 | 61.63 | 72.40 | a | 72.06 | 70.37 | 57.74 | 43.93 | 39.04 | e | 54.98 | a | ||||||
1984 | 39.80 | a | 39.11 | b | 44.20 | a | 48.40 | 61.00 | 62.80 | 70.83 | a | 70.90 | 66.25 | b | 49.74 | 42.21 | a | 37.67 | a | 52.74 | ||||||
1985 | 37.45 | 39.50 | 42.35 | 53.13 | 58.74 | 68.90 | a | 73.93 | a | 73.71 | 60.79 | b | 57.26 | 42.90 | a | 40.58 | 54.10 | |||||||||
1986 | 44.81 | 45.48 | a | 52.58 | 54.07 | 60.94 | 72.07 | 75.10 | a | 76.90 | 65.52 | a | 57.26 | 49.43 | b | 43.97 | a | 58.18 | ||||||||
1987 | 39.23 | 43.39 | 44.74 | 57.57 | 62.47 | a | 69.40 | 71.55 | 73.48 | 68.33 | 63.23 | a | 46.97 | 37.94 | 56.52 | |||||||||||
1988 | 40.20 | a | 45.21 | 45.58 | 53.50 | 60.35 | 71.67 | 77.94 | 75.48 | 69.67 | 66.68 | 49.23 | 42.71 | 58.18 | ||||||||||||
1989 | 41.58 | 43.79 | 50.39 | 58.27 | 60.97 | 67.90 | 78.84 | 74.58 | 70.23 | 61.06 | 51.52 | c | 42.23 | a | 58.45 | |||||||||||
1990 | 40.29 | 40.18 | 48.65 | 55.97 | 58.77 | 73.10 | a | 76.43 | a | 73.32 | 71.70 | 61.97 | a | 51.00 | 40.19 | 57.63 | ||||||||||
1991 | 41.52 | 48.36 | 42.67 | a | 49.53 | 56.35 | 65.50 | 73.32 | 76.32 | 70.60 | 63.97 | 48.80 | 45.17 | a | 56.84 | |||||||||||
1992 | 42.37 | a | 47.45 | 48.16 | 57.41 | a | 64.32 | 66.28 | a | 72.23 | a | 73.97 | 70.90 | 62.17 | a | 46.13 | 41.80 | a | 57.77 | |||||||
1993 | 44.74 | 44.46 | 48.73 | a | 53.73 | 64.03 | 68.67 | 72.16 | 73.65 | 68.80 | 60.85 | d | 46.03 | 42.39 | c | 57.35 | ||||||||||
1994 | 41.00 | a | 40.96 | a | 48.48 | 53.90 | 58.67 | a | 71.33 | 75.83 | a | 79.35 | 71.14 | a | 58.33 | a | 44.12 | e | 43.04 | h | 58.47 | a | ||||
1995 | 41.00 | c | 48.68 | c | 48.21 | c | 48.46 | d | 56.37 | a | 64.22 | g | 74.67 | a | 77.70 | a | 73.12 | d | 60.43 | c | 53.96 | f | 45.67 | g | 58.74 | c |
1996 | 41.39 | m | 48.55 | i | 48.52 | j | 54.10 | i | 60.10 | k | 71.11 | k | 77.53 | n | 77.95 | j | 68.05 | k | 59.65 | n | 51.50 | h | 40.33 | m | ----- | z |
1997 | 41.23 | i | 42.32 | f | 52.04 | h | 52.52 | i | 67.19 | o | 66.05 | j | 75.26 | l | 77.84 | l | 75.14 | i | 59.15 | k | 51.94 | n | 41.87 | p | ----- | z |
1998 | 42.93 | q | 38.69 | l | 46.42 | l | 47.91 | h | 56.81 | j | 60.58 | k | 79.00 | e | 80.42 | l | 70.88 | d | 59.60 | k | 49.76 | i | 41.20 | k | 74.94 | j |
1999 | 43.62 | e | 43.44 | j | 45.40 | k | 47.50 | f | 58.09 | h | 69.68 | e | 75.26 | l | 77.10 | j | 69.94 | m | 62.88 | o | 55.00 | u | 39.82 | t | 56.65 | j |
2000 | 42.88 | o | 43.85 | p | 47.79 | q | 53.86 | p | 62.53 | n | 72.25 | n | 74.86 | q | 75.07 | p | 73.07 | p | 60.47 | n | 41.45 | s | 42.67 | v | ----- | z |
2001 | 39.31 | r | 38.08 | p | 46.77 | r | 51.67 | o | 65.06 | m | 69.94 | n | 76.61 | m | 75.44 | m | 73.21 | p | 61.83 | s | 51.08 | q | 39.14 | q | ----- | z |
2002 | 40.93 | q | 42.08 | o | 45.71 | q | 54.71 | m | 57.94 | o | 69.60 | o | 76.65 | n | 72.64 | q | 71.00 | n | 59.80 | p | 50.69 | q | 44.33 | v | ----- | z |
2003 | 50.08 | r | 44.86 | n | 46.38 | o | 46.00 | p | 62.67 | v | 64.88 | n | 76.64 | q | 77.00 | p | 73.12 | n | 68.75 | s | 47.67 | r | 41.60 | u | ----- | z |
2004 | 43.00 | o | 41.00 | q | 55.20 | p | 54.71 | p | 57.93 | p | 64.41 | m | 74.31 | r | 72.80 | p | 66.23 | q | 59.87 | p | 46.73 | o | 42.31 | r | ----- | z |
2005 | 42.65 | n | 45.94 | k | 44.47 | l | ----- | z | 60.71 | q | 68.69 | q | 73.57 | x | 72.93 | p | 72.55 | s | 59.00 | q | 52.29 | p | 40.83 | s | ----- | z |
2006 | 40.93 | q | 42.92 | o | 43.00 | o | 49.60 | t | 62.23 | r | 70.43 | p | 77.36 | t | 75.95 | l | 67.64 | p | 60.00 | p | 52.71 | p | 39.29 | x | ----- | z |
2007 | 38.00 | r | 43.00 | n | 47.87 | p | 51.65 | m | 61.67 | p | 69.00 | o | 76.10 | u | 77.81 | o | 69.79 | p | 61.41 | n | 56.47 | o | 41.00 | u | ----- | z |
2008 | 37.67 | p | 40.79 | o | 44.93 | p | 46.64 | p | 54.70 | u | 65.92 | q | 75.73 | p | 74.93 | q | 71.62 | q | 61.38 | o | 50.56 | u | 42.50 | u | ----- | z |
2009 | 43.85 | r | 41.77 | o | 45.50 | o | 48.88 | m | 65.15 | r | 67.89 | l | 78.27 | p | ----- | z | 71.91 | s | 57.58 | s | 53.46 | q | 39.67 | s | ----- | z |
2010 | 42.75 | s | 42.50 | p | 44.29 | n | 50.00 | p | 52.00 | r | 59.38 | v | 78.92 | r | 74.58 | s | 68.44 | u | 62.79 | q | 47.67 | o | 46.56 | v | ----- | z |
2011 | 40.00 | r | 38.00 | q | 47.46 | r | 50.73 | s | 54.35 | n | 65.86 | p | ----- | z | ----- | z | ----- | z | 62.29 | q | 47.20 | o | 38.43 | x | ----- | z |
2012 | 43.08 | r | 41.47 | n | 43.50 | o | 48.57 | w | 61.08 | r | 69.55 | s | 75.00 | p | 77.50 | q | 71.80 | y | 61.62 | r | 49.78 | u | 44.86 | x | ----- | z |
2013 | 36.00 | u | 38.00 | o | 49.40 | p | 51.20 | o | 58.20 | p | 67.53 | o | 76.39 | m | 75.40 | u | ----- | z | 55.75 | s | 51.14 | p | 40.55 | t | ----- | z |
2014 | 42.60 | u | 45.53 | m | 49.00 | n | 51.07 | o | 57.71 | q | 65.73 | o | 76.77 | r | 71.13 | p | 71.00 | s | 62.75 | s | 50.00 | y | 50.00 | x | ----- | z |
2015 | 43.75 | s | 47.50 | n | 49.73 | p | 50.69 | n | 54.43 | x | 71.73 | o | 74.60 | p | ----- | z | 70.67 | r | 60.64 | t | 44.90 | t | ----- | z | ----- | z |
2016 | 40.00 | x | ----- | z | 47.83 | s | 53.80 | o | 56.87 | p | ----- | z | 76.78 | v | 73.29 | q | ----- | z | ----- | z | 54.67 | x | 45.50 | y | ----- | z |
2017 | 41.82 | t | 45.92 | p | 48.31 | o | ----- | z | 59.00 | s | 73.00 | x | 75.67 | p | 75.68 | l | 67.20 | o | 62.75 | o | 56.00 | p | 45.25 | s | ----- | z |
2018 | 45.53 | n | 42.46 | o | 47.46 | r | 54.87 | o | 58.11 | m | 68.25 | n | 77.69 | r | 74.44 | m | 72.29 | p | 60.44 | o | 48.14 | p | 42.80 | u | ----- | z |
2019 | 40.59 | n | 37.00 | l | 46.87 | p | 50.94 | n | 54.71 | n | 65.12 | n | 74.69 | r | 76.88 | n | 70.31 | n | 56.60 | p | 52.38 | q | 42.25 | s | ----- | z |
2020 | 42.25 | o | 38.75 | m | 46.15 | k | 51.11 | l | 58.87 | p | 65.81 | n | 81.00 | x | 79.18 | n | 72.50 | n | 62.59 | n | 50.00 | r | 44.20 | u | ----- | z |
2021 | 40.67 | p | 42.08 | p | 40.84 | l | 53.54 | q | 59.12 | o | 71.28 | l | 74.09 | t | 73.67 | m | 69.82 | m | 55.88 | w | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | 41.06 | l | 49.10 | u | 52.12 | n | 56.13 | p | 71.28 | l | 77.43 | q | 74.38 | w | 72.27 | o | 60.12 | o | 44.21 | p | 39.11 | v | ----- | z |
2023 | 39.50 | s | 38.38 | l | 43.11 | m | 47.85 | q | 59.27 | p | 60.56 | n | ----- | z | 78.43 | q | 69.20 | t | 61.38 | w | 54.77 | q | 46.55 | t | ----- | z |
2024 | 36.50 | u | 44.15 | p | 43.60 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.30 | 42.53 | 45.46 | 51.83 | 59.24 | 67.73 | 75.44 | 74.50 | 69.59 | 59.33 | 47.49 | 41.75 | 56.27 | |||||||||||||
S.D. | 2.86 | 3.79 | 3.09 | 3.40 | 2.54 | 3.33 | 2.30 | 2.41 | 2.57 | 3.13 | 2.98 | 2.88 | 1.47 | |||||||||||||
SKEW | -0.25 | -0.21 | 0.47 | 0.01 | 0.26 | -0.05 | -0.29 | -0.24 | -0.88 | -0.18 | -0.41 | -0.04 | -1.12 | |||||||||||||
MAX | 45.65 | 49.34 | 55.06 | 58.43 | 65.48 | 74.63 | 80.87 | 79.35 | 74.23 | 66.68 | 52.93 | 48.20 | 58.98 | |||||||||||||
MIN | 33.00 | 33.03 | 39.19 | 44.37 | 53.29 | 61.63 | 69.42 | 68.26 | 60.79 | 49.74 | 38.30 | 35.55 | 50.87 | |||||||||||||
YRS | 54 | 55 | 55 | 55 | 55 | 56 | 57 | 56 | 57 | 56 | 55 | 53 | 50 |