YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | 60.06 | 64.13 | 72.68 | 72.61 | h | 61.07 | a | 47.63 | a | 43.03 | 34.16 | 54.68 | e | |||||
1940 | 34.77 | 38.55 | 42.32 | 50.86 | b | 62.16 | 66.83 | 71.57 | a | 74.74 | 64.42 | d | 50.42 | 36.53 | 35.80 | a | 52.42 | |||||||||
1941 | 36.84 | 43.25 | 34.68 | ----- | z | 57.42 | 62.70 | 70.90 | a | 66.03 | 57.00 | 49.84 | 37.60 | 34.58 | 50.08 | a | ||||||||||
1942 | 33.87 | 34.25 | 38.77 | 54.77 | 54.48 | 63.93 | 71.84 | 69.50 | q | 60.43 | 51.00 | 37.37 | 30.84 | 48.32 | a | |||||||||||
1943 | 31.90 | a | 37.39 | 43.16 | ----- | z | 53.74 | 59.50 | 65.26 | 72.65 | 62.90 | 50.19 | 34.23 | 35.74 | 49.70 | a | ||||||||||
1944 | 33.40 | a | 34.93 | 39.87 | 44.10 | 56.39 | 58.10 | 64.23 | 71.42 | 60.33 | 47.73 | p | 38.37 | 28.38 | b | 48.14 | a | |||||||||
1945 | 31.80 | p | 35.56 | c | 38.81 | 43.86 | a | 56.80 | a | 62.50 | b | 74.94 | 74.42 | 63.36 | b | 52.52 | b | 33.87 | 31.03 | b | 51.61 | a | ||||
1946 | 27.42 | 32.18 | 38.11 | c | 52.23 | 59.72 | b | 66.89 | b | 72.65 | 72.39 | c | 60.83 | 46.58 | 37.97 | 33.77 | 50.06 | |||||||||
1947 | 27.42 | 35.82 | 42.61 | 48.80 | 59.26 | 65.14 | a | 70.82 | c | 71.00 | 65.67 | 51.55 | 35.43 | 32.71 | 50.52 | |||||||||||
1948 | 27.52 | 29.52 | 34.97 | b | 44.87 | 49.69 | r | ----- | z | 70.20 | f | 68.03 | 62.43 | 51.52 | 33.63 | 29.32 | 42.42 | c | ||||||||
1949 | 27.29 | 30.96 | a | 39.90 | 46.68 | h | 56.93 | a | 68.90 | 73.10 | 67.19 | 61.83 | 49.00 | a | 38.10 | 30.48 | 49.43 | a | ||||||||
1950 | 28.65 | 37.89 | 42.03 | 52.63 | 56.87 | 63.07 | 75.52 | 69.19 | 63.20 | 52.58 | 41.07 | 34.58 | 51.44 | |||||||||||||
1951 | 31.00 | a | 34.89 | 42.63 | a | 51.10 | 58.42 | 63.43 | 72.90 | 69.77 | 63.00 | a | 50.90 | a | 39.30 | 30.97 | 50.69 | |||||||||
1952 | 30.87 | 34.21 | 39.90 | b | 52.57 | 57.74 | 60.67 | 70.45 | i | 72.72 | b | 57.93 | a | 41.23 | i | 33.00 | d | 32.30 | d | 47.19 | b | |||||
1953 | 30.74 | 29.43 | 36.97 | 44.70 | 50.10 | a | 59.00 | 73.87 | 66.52 | 53.37 | 43.58 | 34.50 | 23.41 | b | 45.52 | |||||||||||
1954 | 27.35 | 37.25 | 38.03 | b | 49.23 | 58.13 | 62.20 | 72.03 | 66.68 | 57.97 | 46.00 | a | 37.33 | 28.10 | a | 48.36 | ||||||||||
1955 | 27.52 | 28.11 | 36.24 | b | 45.13 | 53.40 | a | 58.03 | 68.33 | a | 71.04 | d | 53.92 | d | 46.62 | b | 34.76 | a | 31.28 | b | 46.20 | |||||
1956 | 29.81 | e | 25.69 | 33.90 | 45.83 | a | 54.39 | 58.43 | 68.10 | 61.55 | 55.43 | 43.97 | 30.80 | 26.87 | 44.56 | |||||||||||
1957 | 30.32 | 39.32 | 40.61 | 45.77 | 50.45 | 63.83 | a | 68.29 | 69.27 | a | 55.53 | 48.42 | 35.03 | 28.00 | 47.90 | |||||||||||
1958 | 28.97 | 36.07 | 39.16 | 42.47 | 52.87 | 58.10 | 59.13 | 72.13 | 61.00 | 48.20 | a | 33.07 | a | 25.29 | 46.37 | |||||||||||
1959 | 25.77 | 31.04 | 35.55 | 48.57 | 54.13 | 64.97 | 72.71 | 69.26 | 55.14 | a | 46.94 | 36.14 | a | 33.90 | 47.84 | |||||||||||
1960 | 28.84 | 31.34 | 40.74 | 47.50 | 53.26 | 63.07 | a | 66.45 | 66.61 | 61.50 | 48.29 | 37.73 | 29.26 | 47.88 | ||||||||||||
1961 | 25.68 | 32.89 | 38.52 | 45.43 | 51.94 | 64.00 | 69.94 | 70.03 | 54.63 | 45.73 | a | 35.44 | c | 28.23 | a | 46.87 | ||||||||||
1962 | 26.73 | a | 34.38 | b | 33.86 | i | 48.03 | a | 50.48 | d | 60.07 | c | 65.45 | b | 66.48 | 59.63 | 50.74 | 37.78 | c | 29.04 | g | 49.98 | b | |||
1963 | 24.42 | g | 39.00 | d | 34.67 | g | 42.55 | h | 55.28 | f | 59.40 | j | 66.69 | e | 73.76 | b | 63.24 | e | 52.33 | g | 41.27 | d | 26.04 | g | 56.79 | g |
1964 | 25.81 | e | ----- | z | 35.17 | h | 45.29 | f | 51.25 | k | 57.43 | g | 70.61 | c | 71.96 | e | 56.12 | f | 51.87 | 35.06 | n | 30.68 | c | 50.19 | g | |
1965 | 32.17 | m | 32.36 | f | 38.26 | h | 48.86 | h | 53.68 | i | 57.80 | e | 67.73 | i | 64.86 | j | 52.70 | g | 46.97 | b | 43.94 | m | 35.75 | g | 52.38 | j |
1966 | 25.86 | j | 30.85 | h | 39.78 | h | 43.60 | j | 54.95 | j | 63.05 | i | 69.05 | k | 72.00 | h | 61.70 | j | 51.04 | e | 37.86 | h | 33.15 | k | 51.04 | k |
1967 | 29.29 | j | 29.00 | h | 43.15 | d | 40.10 | j | 52.61 | h | 60.37 | k | 73.74 | h | 75.12 | e | 64.19 | d | 50.29 | 39.39 | b | 30.17 | a | 50.38 | f | |
1968 | 30.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.84 | k | |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | 41.67 | a | 50.17 | 55.76 | b | 69.00 | 73.79 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.08 | g | ||
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | 42.24 | 45.84 | 52.80 | 61.29 | 64.63 | 71.42 | 73.23 | 63.93 | 53.65 | 37.17 | 32.48 | 54.43 | a | |||||||||||
1993 | 36.23 | 39.79 | 45.77 | 48.83 | 58.26 | 63.23 | 68.81 | 69.19 | 59.67 | 50.71 | 36.07 | 30.10 | 50.55 | |||||||||||||
1994 | 30.71 | 34.32 | 45.90 | 50.76 | a | 58.71 | 67.63 | 73.26 | 73.94 | 63.37 | 49.06 | 34.23 | 35.35 | 51.44 | ||||||||||||
1995 | 38.77 | 41.18 | 43.26 | 48.60 | 55.32 | 64.00 | 71.42 | 73.42 | 65.87 | 50.52 | 40.57 | 33.58 | 52.21 | |||||||||||||
1996 | 31.19 | 39.55 | 42.16 | 51.33 | 60.77 | 65.40 | 76.58 | 73.71 | 63.53 | 49.74 | 42.77 | 35.23 | 52.66 | |||||||||||||
1997 | 37.39 | 37.93 | 44.19 | 48.00 | 61.87 | 66.50 | 67.84 | 71.06 | 65.70 | 47.48 | 38.27 | 29.90 | 51.34 | |||||||||||||
1998 | 31.52 | 37.11 | 41.10 | 44.63 | 51.90 | 60.40 | 70.29 | 71.55 | 63.07 | 47.71 | 35.53 | 28.00 | 48.57 | |||||||||||||
1999 | 32.71 | 36.64 | 43.77 | 46.89 | c | 58.81 | 65.00 | b | 75.86 | b | 73.31 | b | 65.32 | b | 50.48 | 39.66 | a | 31.63 | a | 51.67 | ||||||
2000 | 35.00 | b | 39.50 | c | 45.20 | a | 54.33 | 63.50 | a | 73.37 | c | 71.55 | 75.66 | b | 63.52 | a | 53.70 | k | 34.36 | h | 32.84 | 55.45 | b | |||
2001 | 33.82 | c | 40.00 | a | 47.46 | c | 51.76 | e | 64.31 | b | 68.70 | c | 72.29 | 73.21 | c | 65.34 | a | 53.23 | a | 43.94 | m | 30.50 | a | 54.60 | a | |
2002 | 29.44 | d | 35.04 | 39.64 | c | 53.34 | a | 57.20 | a | 67.77 | 77.23 | 69.10 | b | 64.24 | a | 51.17 | a | 40.21 | b | 32.90 | b | 51.44 | ||||
2003 | 36.03 | b | 38.31 | b | 44.27 | a | 49.10 | a | 59.77 | 69.59 | a | 77.31 | b | 75.84 | 66.60 | 57.17 | a | 38.46 | b | 31.70 | a | 53.68 | ||||
2004 | 31.26 | 36.03 | 49.90 | 51.86 | a | 59.18 | c | 66.00 | b | 73.42 | 71.13 | 62.10 | a | 52.50 | e | 39.37 | 33.17 | a | 52.16 | |||||||
2005 | 36.61 | c | 39.85 | a | 42.84 | 46.20 | 59.19 | 65.33 | 71.94 | 70.74 | 58.93 | 51.35 | 39.17 | 27.32 | 50.79 | |||||||||||
2006 | 29.55 | 32.50 | 36.65 | 49.41 | a | 62.34 | b | 66.97 | 75.47 | a | 69.94 | 60.07 | 47.77 | 36.37 | 26.77 | a | 49.48 | |||||||||
2007 | 25.19 | 33.44 | a | 43.48 | 48.53 | 58.39 | 63.17 | 72.97 | 70.65 | 61.97 | 47.65 | 38.87 | 31.90 | 49.68 | ||||||||||||
2008 | 33.29 | 34.24 | 41.19 | 47.73 | 56.65 | 65.87 | 75.58 | 73.81 | 65.93 | a | 53.52 | 44.03 | 33.16 | 52.08 | ||||||||||||
2009 | 34.93 | a | 39.32 | 42.65 | 49.57 | 65.77 | 67.90 | 77.61 | 72.48 | 70.00 | 52.71 | 40.97 | 33.74 | 53.97 | ||||||||||||
2010 | 36.06 | 40.71 | 44.26 | 48.77 | 56.06 | 70.33 | 81.26 | 74.71 | 63.10 | 56.19 | 38.70 | 37.16 | 53.94 | |||||||||||||
2011 | 30.16 | 33.00 | 41.55 | 47.13 | 54.19 | 63.40 | 71.00 | 71.94 | 63.37 | 50.68 | 36.30 | 28.48 | 49.27 | |||||||||||||
2012 | 29.97 | 36.00 | 42.26 | 51.73 | 62.32 | 68.93 | 75.52 | 77.55 | 69.07 | 54.23 | 41.67 | 35.74 | 53.75 | |||||||||||||
2013 | 31.29 | 34.68 | 47.03 | 51.67 | 62.32 | 71.60 | 81.32 | 74.90 | 67.10 | 51.00 | 43.23 | 31.45 | 53.97 | |||||||||||||
2014 | 32.00 | 38.39 | 46.06 | 51.57 | 60.68 | 69.17 | 78.68 | 73.13 | 70.00 | 57.45 | 41.07 | 38.23 | 54.70 | |||||||||||||
2015 | 35.84 | 40.93 | 49.45 | 50.70 | 59.74 | 73.43 | 74.84 | 76.45 | 71.03 | 60.13 | 38.30 | 29.48 | 55.03 | |||||||||||||
2016 | 34.81 | 40.28 | 46.06 | 53.10 | 60.48 | 73.40 | 77.16 | 75.87 | 65.87 | 57.13 | 45.67 | 34.71 | 55.38 | |||||||||||||
2017 | 37.55 | 43.32 | 46.87 | 51.13 | 58.68 | 71.43 | 78.48 | 76.06 | 67.13 | 52.48 | 43.53 | 32.90 | 54.97 | |||||||||||||
2018 | 36.32 | 35.64 | 43.84 | 54.80 | 61.00 | 70.83 | 80.29 | 77.13 | 67.50 | 56.65 | 40.07 | 33.90 | 54.83 | |||||||||||||
2019 | 35.81 | 34.64 | 45.84 | 53.17 | 56.48 | 69.53 | 75.13 | 74.10 | 66.40 | 46.81 | 38.13 | 36.16 | 52.68 | |||||||||||||
2020 | 33.68 | 35.38 | 45.10 | 51.23 | 62.26 | 68.07 | 73.65 | 75.23 | 66.47 | 54.03 | 42.23 | 30.48 | 53.15 | |||||||||||||
2021 | 33.39 | 36.57 | 41.32 | 53.23 | 59.90 | a | 72.30 | 79.29 | 75.48 | 69.83 | 52.23 | 46.83 | 33.48 | 54.49 | ||||||||||||
2022 | 33.19 | 35.04 | 42.16 | 50.30 | 60.10 | 70.97 | 78.39 | 78.23 | 70.97 | 58.19 | 37.43 | 32.42 | 53.95 | |||||||||||||
2023 | 36.16 | 34.64 | 41.42 | 49.37 | 61.03 | 65.90 | 78.39 | 74.65 | 66.10 | 55.97 | 42.50 | 35.42 | 53.46 | |||||||||||||
2024 | 34.71 | 41.38 | 44.87 | 51.07 | 53.44 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.01 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.86 | 36.17 | 42.03 | 49.47 | 57.92 | 65.53 | 72.91 | 72.06 | 62.98 | 50.91 | 38.39 | 31.76 | 51.21 | |||||||||||||
S.D. | 3.58 | 3.78 | 3.64 | 3.06 | 3.66 | 4.25 | 4.46 | 3.36 | 4.30 | 3.60 | 3.36 | 3.08 | 2.87 | |||||||||||||
SKEW | -0.07 | -0.36 | -0.21 | -0.33 | -0.28 | -0.03 | -0.45 | -0.62 | -0.32 | 0.37 | 0.24 | -0.33 | -0.53 | |||||||||||||
MAX | 38.77 | 43.32 | 49.90 | 54.80 | 65.77 | 73.43 | 81.32 | 78.23 | 71.03 | 60.13 | 46.83 | 38.23 | 55.38 | |||||||||||||
MIN | 25.19 | 25.69 | 33.90 | 42.47 | 50.10 | 57.80 | 59.13 | 61.55 | 53.37 | 43.58 | 30.80 | 23.41 | 44.56 | |||||||||||||
YRS | 56 | 57 | 57 | 54 | 56 | 57 | 57 | 57 | 58 | 57 | 56 | 57 | 43 |