YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.33 | s | 37.69 | a | 27.71 | 32.70 | j | |
1941 | 25.03 | b | 33.82 | 38.29 | 41.30 | 58.16 | 64.67 | 72.32 | 69.48 | 60.77 | 50.26 | 40.43 | 29.26 | 48.65 | ||||||||||||
1942 | 22.00 | a | 25.54 | 34.19 | 46.37 | 55.81 | 67.50 | 72.10 | 69.48 | 64.93 | 53.30 | a | 43.10 | 29.71 | 48.67 | |||||||||||
1943 | 28.45 | b | 34.42 | b | 36.65 | 51.90 | a | 53.97 | a | 66.10 | 74.06 | 69.67 | a | 67.07 | a | 53.81 | 43.43 | 34.00 | 51.13 | |||||||
1944 | 29.90 | 32.34 | 34.42 | 42.73 | 55.29 | 67.50 | 72.55 | 72.60 | a | 66.67 | 55.90 | a | 39.07 | a | 32.65 | 50.14 | ||||||||||
1945 | 30.19 | 33.39 | 37.10 | a | 41.54 | b | 58.24 | b | 63.37 | 71.45 | 69.68 | 62.10 | 55.29 | 37.13 | 23.97 | 48.62 | ||||||||||
1946 | 24.90 | 33.46 | 41.29 | 50.86 | a | 53.26 | 69.67 | 72.23 | 68.73 | a | 65.43 | 49.74 | 36.43 | 32.13 | 49.85 | |||||||||||
1947 | 23.58 | 34.00 | 36.26 | 43.40 | 58.32 | 63.83 | 71.81 | 71.39 | 65.33 | 55.43 | a | 32.93 | 28.19 | 48.71 | ||||||||||||
1948 | 29.45 | 29.69 | 32.48 | b | 45.60 | 57.74 | 65.73 | 73.61 | 69.55 | 68.03 | 53.94 | 31.10 | 24.26 | 48.43 | ||||||||||||
1949 | 21.32 | 26.89 | 37.90 | 47.33 | 55.61 | 61.35 | d | 70.31 | b | 70.90 | 65.53 | 51.97 | 48.43 | 26.00 | 48.63 | |||||||||||
1950 | 24.48 | 32.25 | 35.45 | 48.37 | 54.61 | 70.17 | 69.90 | 67.84 | 60.90 | 61.58 | 40.40 | 29.81 | 49.65 | |||||||||||||
1951 | 26.32 | 33.29 | 36.10 | 44.37 | 56.87 | 64.30 | 74.71 | 67.87 | 66.67 | 50.90 | 31.80 | 24.68 | 48.16 | |||||||||||||
1952 | 23.61 | 28.31 | 30.97 | 47.57 | 55.00 | 70.70 | 71.77 | 69.00 | 64.97 | 59.39 | 35.57 | 23.10 | 48.33 | |||||||||||||
1953 | 32.03 | 30.52 | a | 39.03 | 41.93 | 51.65 | 70.00 | 72.32 | 68.48 | 66.60 | 55.00 | 42.10 | 29.00 | 49.89 | ||||||||||||
1954 | 31.26 | 37.74 | a | 36.06 | 52.90 | 60.00 | 69.27 | 71.39 | 70.39 | 64.40 | 57.19 | 45.73 | 24.52 | 51.74 | ||||||||||||
1955 | 23.32 | 26.57 | 35.43 | a | 44.70 | 56.48 | 65.33 | 72.65 | 69.13 | 66.83 | 56.52 | 35.30 | 28.84 | 48.43 | ||||||||||||
1956 | 28.06 | 26.07 | 39.60 | a | 44.23 | 60.84 | 71.97 | 71.77 | 67.16 | 69.13 | 54.65 | 34.30 | 26.03 | 49.48 | ||||||||||||
1957 | 24.81 | 35.25 | 36.97 | 41.53 | 49.77 | a | 64.50 | 69.10 | a | 68.84 | 63.70 | 50.10 | 33.80 | 29.13 | 47.29 | |||||||||||
1958 | 23.06 | 33.96 | 34.16 | 42.80 | 60.35 | 70.70 | 72.61 | 71.35 | 64.67 | 56.81 | 41.67 | 34.13 | 50.52 | |||||||||||||
1959 | 29.61 | 28.82 | 36.71 | 45.73 | 56.16 | 70.97 | 72.39 | 69.45 | 61.83 | 51.45 | 40.60 | 33.52 | 49.77 | |||||||||||||
1960 | 28.52 | b | 25.38 | 39.84 | 49.70 | 57.03 | 70.20 | 72.35 | 73.65 | 66.90 | a | 52.65 | 39.52 | a | 29.31 | b | 50.42 | |||||||||
1961 | 30.23 | 32.82 | 38.30 | a | 44.28 | a | 58.29 | 70.60 | 71.52 | 70.77 | 58.07 | a | 53.55 | 35.23 | 24.39 | 49.00 | ||||||||||
1962 | 21.80 | a | 32.35 | b | 33.52 | 49.24 | a | 56.80 | a | 66.17 | 70.93 | a | 70.42 | 64.20 | 58.03 | 44.23 | 32.90 | 50.05 | ||||||||
1963 | 24.94 | 35.32 | 36.71 | 47.57 | 60.77 | 67.90 | 73.32 | 67.74 | 67.83 | 59.94 | 44.07 | 31.06 | 51.43 | |||||||||||||
1964 | 25.71 | 27.72 | 31.77 | 42.80 | 57.52 | 66.03 | 74.16 | 67.00 | 62.50 | 58.87 | 40.20 | 24.55 | 48.24 | |||||||||||||
1965 | 28.87 | 32.14 | 32.45 | 45.37 | 52.32 | 62.27 | 69.81 | 67.77 | 57.00 | 58.61 | 42.10 | 28.73 | a | 48.12 | ||||||||||||
1966 | 23.37 | a | 27.56 | a | 41.71 | 48.03 | a | 59.06 | 65.23 | 73.97 | 70.35 | 64.63 | 54.87 | 42.00 | 21.71 | 49.38 | ||||||||||
1967 | 27.77 | 32.46 | 42.87 | 45.77 | 52.77 | 62.17 | 71.52 | 66.90 | 62.27 | 55.00 | 42.80 | 26.13 | 49.04 | |||||||||||||
1968 | 27.50 | a | 33.93 | 39.13 | 41.00 | a | 53.13 | 68.90 | 70.48 | 65.19 | 61.50 | 54.71 | 34.00 | 27.53 | a | 48.08 | ||||||||||
1969 | 30.06 | 27.78 | a | 35.29 | 49.53 | 60.90 | 61.77 | 72.29 | 72.39 | 62.37 | 42.84 | 37.07 | a | 26.58 | 48.24 | |||||||||||
1970 | 26.19 | 36.63 | a | 34.32 | 40.67 | 57.90 | b | 64.43 | 72.19 | 70.90 | 60.73 | 46.13 | 38.27 | 26.94 | 47.94 | |||||||||||
1971 | 29.35 | 30.39 | 37.06 | 46.93 | 53.68 | 67.67 | 70.39 | 68.48 | 61.13 | 52.71 | 38.80 | 23.55 | 48.35 | |||||||||||||
1972 | 27.26 | 34.48 | 42.61 | 47.40 | 57.29 | 66.70 | 72.87 | 68.42 | 62.63 | 51.16 | 31.63 | 22.52 | 48.75 | |||||||||||||
1973 | 24.06 | 31.79 | 36.68 | 40.97 | 54.61 | 65.93 | 69.26 | 69.55 | 61.80 | 56.07 | a | 40.30 | 29.03 | 48.34 | ||||||||||||
1974 | 22.83 | a | 31.25 | 40.10 | 44.17 | 62.26 | 68.83 | 71.26 | 68.87 | 64.07 | 54.19 | 36.80 | 24.84 | 49.12 | ||||||||||||
1975 | 27.34 | b | 27.07 | 35.39 | 39.87 | 52.71 | 64.83 | 70.84 | 69.45 | 63.20 | 55.74 | 39.03 | 29.03 | 47.88 | ||||||||||||
1976 | 28.32 | 35.17 | 36.13 | 47.27 | 57.35 | 67.67 | 72.10 | 68.19 | 62.20 | 52.77 | 43.37 | 35.16 | 50.48 | |||||||||||||
1977 | 29.77 | 37.29 | 36.52 | 49.77 | 58.81 | 72.27 | 71.87 | 71.52 | 64.63 | 55.55 | 41.20 | 30.39 | 51.63 | |||||||||||||
1978 | 26.61 | 31.21 | 40.71 | 47.70 | 54.55 | 69.07 | 74.23 | 70.47 | a | 65.93 | 57.07 | a | 39.93 | 22.63 | a | 50.01 | ||||||||||
1979 | 19.77 | 30.79 | 38.23 | 45.57 | 53.87 | 67.57 | 73.45 | 68.87 | 68.63 | 56.74 | 33.23 | 30.42 | 48.93 | |||||||||||||
1980 | 30.87 | 34.34 | 35.90 | b | 43.37 | 53.97 | 72.43 | 75.52 | 71.29 | 66.37 | 53.74 | 42.90 | 39.34 | b | 51.67 | |||||||||||
1981 | 32.45 | 36.74 | a | 38.42 | 52.34 | a | 53.38 | b | 71.83 | 72.16 | 69.06 | 63.70 | 51.27 | a | 44.47 | 31.37 | a | 51.43 | ||||||||
1982 | 28.80 | a | 32.19 | a | 37.55 | 43.28 | a | 52.47 | a | 65.20 | 72.42 | 69.32 | 59.47 | 48.48 | 35.85 | c | 29.80 | a | 47.90 | |||||||
1983 | 30.57 | c | 35.21 | 37.14 | b | 38.77 | 48.50 | a | 62.59 | a | 72.29 | 71.06 | 64.79 | a | 54.48 | b | 33.61 | b | 26.14 | b | 47.93 | |||||
1984 | 19.11 | c | 29.59 | 32.60 | a | 37.87 | 56.61 | ----- | z | 71.10 | b | 67.87 | 62.03 | 43.19 | 34.14 | b | 24.04 | d | 43.47 | a | ||||||
1985 | 15.62 | b | 29.00 | d | 37.45 | b | 47.86 | b | 56.83 | a | 68.97 | a | ----- | z | 72.26 | 59.18 | b | 50.43 | a | 34.71 | b | 29.14 | c | 45.59 | a | |
1986 | 31.29 | 32.07 | 42.39 | 45.17 | a | 55.43 | a | 66.86 | b | 67.80 | a | 69.35 | 57.43 | 48.93 | b | 37.57 | b | 23.97 | b | 48.19 | ||||||
1987 | 23.33 | d | 30.69 | b | 34.48 | d | 48.50 | b | 54.06 | 68.40 | ----- | z | 68.00 | a | 62.70 | 55.90 | a | 37.76 | a | 27.63 | d | 46.50 | a | |||
1988 | 24.58 | e | 34.54 | a | 35.89 | d | 47.23 | 55.21 | c | 68.86 | a | 72.74 | 71.07 | a | 63.13 | 57.10 | 38.27 | 24.10 | b | 49.39 | ||||||
1989 | 22.41 | b | 30.81 | a | 41.81 | 49.31 | a | 58.39 | 64.63 | 72.77 | 67.55 | 64.27 | 52.86 | b | 41.21 | b | 28.35 | 49.53 | ||||||||
1990 | 28.85 | d | 31.86 | 40.03 | 46.57 | 54.39 | 72.17 | a | 68.81 | 68.83 | a | 65.60 | 51.55 | 39.77 | 25.74 | 49.51 | ||||||||||
1991 | 25.29 | 36.59 | a | 34.77 | 42.20 | 57.43 | c | 65.57 | 69.19 | 68.39 | 63.52 | a | 56.17 | a | 34.57 | 22.07 | c | 47.98 | ||||||||
1992 | 24.97 | b | 33.45 | 39.10 | 50.86 | a | 57.04 | d | 64.00 | b | 67.21 | b | 65.74 | 61.48 | a | 55.23 | a | 30.87 | 23.38 | b | 47.78 | |||||
1993 | 26.33 | d | 28.04 | a | 39.67 | a | 41.52 | a | 54.17 | a | 65.07 | c | 69.87 | a | 65.83 | a | 60.75 | b | 48.25 | c | 32.18 | b | 23.77 | a | 46.29 | |
1994 | 29.03 | 31.07 | 40.90 | b | 44.79 | b | 56.97 | a | 70.23 | 71.93 | b | 69.84 | 61.59 | a | 48.43 | a | 34.14 | b | 27.16 | 48.84 | ||||||
1995 | 26.17 | a | 37.96 | 37.19 | 41.22 | c | 47.38 | b | 62.34 | a | 66.84 | 70.70 | a | 59.93 | a | 51.44 | d | 42.10 | a | 30.76 | b | 47.84 | ||||
1996 | 25.28 | b | 33.26 | b | 37.42 | 45.04 | c | 59.42 | 66.48 | a | 71.81 | 69.39 | 58.55 | a | 50.31 | b | 37.20 | 22.89 | d | 48.09 | ||||||
1997 | 26.31 | e | 28.16 | c | 41.53 | a | 40.50 | 53.68 | 65.77 | 69.60 | a | 68.43 | a | 65.00 | 53.52 | d | 36.59 | c | 25.68 | c | 47.90 | |||||
1998 | 28.58 | 30.04 | 38.28 | b | 42.54 | b | 58.14 | b | 65.04 | c | 71.43 | c | 69.79 | b | 66.90 | 49.73 | e | 39.22 | c | 31.55 | b | 49.27 | ||||
1999 | 30.04 | c | 35.00 | a | 44.41 | b | 42.65 | d | 53.66 | b | 66.68 | b | 69.16 | 66.07 | a | 62.63 | c | 57.83 | b | 49.41 | a | 30.27 | a | 50.65 | ||
2000 | 30.57 | a | 36.88 | d | 40.61 | c | 51.85 | c | 64.33 | d | 70.00 | d | 72.67 | a | 70.48 | 66.11 | c | 53.71 | c | 32.52 | c | 30.71 | c | 51.70 | ||
2001 | 27.44 | d | 34.44 | a | 37.90 | b | 49.88 | d | 61.04 | d | 70.62 | d | 72.66 | b | 68.57 | a | 66.89 | b | 54.88 | e | 41.93 | a | 25.65 | 50.99 | ||
2002 | 29.11 | c | 32.04 | b | 38.22 | d | 53.74 | c | 60.21 | c | 73.70 | c | 75.87 | a | 72.52 | b | 63.12 | d | 50.10 | 36.69 | d | 26.40 | a | 50.98 | ||
2003 | 35.94 | 29.70 | a | 39.72 | b | 48.65 | d | 60.41 | d | 65.86 | b | 76.60 | a | 70.10 | a | 63.17 | 60.97 | a | 35.24 | e | 29.33 | d | 51.31 | |||
2004 | 26.79 | c | 30.07 | a | 45.76 | b | 47.89 | b | 58.61 | c | 67.32 | b | 69.33 | a | 68.28 | b | 62.88 | f | 51.68 | c | 39.86 | a | 29.33 | a | 48.63 | a |
2005 | 31.58 | 33.57 | 37.61 | 47.37 | 59.17 | a | 65.87 | 74.71 | 67.07 | a | 64.13 | 53.26 | 39.17 | 25.14 | c | 49.89 | ||||||||||
2006 | 26.60 | a | 32.41 | a | 36.55 | 50.30 | 59.10 | 70.07 | 70.29 | 66.32 | 58.43 | 47.32 | 39.00 | 32.77 | 49.10 | |||||||||||
2007 | 29.00 | 34.15 | a | 43.77 | a | 49.81 | d | 55.20 | a | 69.07 | 72.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.52 | e | |||
2008 | ----- | z | ----- | z | 36.61 | 44.80 | 56.77 | a | 69.03 | 72.87 | 71.23 | a | 64.63 | 56.00 | 44.63 | 27.52 | b | 54.41 | b | |||||||
2009 | 30.77 | 34.93 | 41.94 | 46.37 | 59.19 | 62.97 | a | 73.03 | 71.45 | 62.87 | 46.10 | a | 44.40 | 23.23 | 49.77 | |||||||||||
2010 | 27.03 | 30.04 | a | 40.00 | a | 47.97 | a | 56.23 | 71.53 | 73.48 | 70.32 | 69.03 | 52.77 | 37.07 | 32.55 | b | 50.67 | |||||||||
2011 | 25.77 | 28.14 | 38.74 | 44.38 | a | 53.23 | 69.07 | 73.61 | 72.35 | 63.87 | 52.23 | 37.43 | 30.39 | 49.10 | ||||||||||||
2012 | 32.26 | 30.55 | 45.48 | 53.87 | 61.68 | 73.83 | 73.16 | 71.26 | 64.73 | 55.00 | 45.23 | 25.50 | a | 52.71 | ||||||||||||
2013 | 24.10 | a | 28.11 | 38.58 | 45.31 | a | 56.42 | 71.77 | 73.35 | 69.52 | 64.20 | 49.55 | 39.10 | 25.77 | 48.81 | |||||||||||
2014 | 30.06 | 30.25 | 39.26 | 44.67 | 55.19 | 68.52 | a | 72.87 | 66.58 | 64.69 | a | 56.37 | a | 38.63 | 28.29 | 49.62 | ||||||||||
2015 | 33.26 | 37.11 | a | 45.52 | 48.07 | 52.00 | 69.73 | 68.35 | 69.90 | 66.77 | 56.32 | 38.73 | 27.00 | 51.06 | ||||||||||||
2016 | 24.57 | a | 37.48 | 40.42 | 46.93 | 55.35 | 72.33 | 72.61 | 67.06 | 63.97 | 56.38 | b | 44.63 | 25.42 | 50.60 | |||||||||||
2017 | 25.16 | 36.04 | 45.27 | a | 46.33 | 55.94 | 71.60 | 72.94 | 69.10 | 64.73 | 55.61 | 46.30 | 35.58 | 52.05 | ||||||||||||
2018 | 34.68 | 33.86 | 40.80 | a | 50.63 | 62.58 | 72.43 | 76.03 | 71.90 | 67.37 | 49.81 | 35.63 | 26.77 | 51.87 | ||||||||||||
2019 | 26.65 | 29.11 | 36.55 | 46.50 | 50.42 | 65.63 | 72.71 | 72.90 | 68.27 | 51.26 | 41.63 | 24.13 | 48.81 | |||||||||||||
2020 | 27.40 | a | 31.24 | 39.97 | 47.23 | 62.06 | 69.13 | 72.81 | 74.74 | 66.27 | 58.52 | 40.13 | 26.19 | 51.31 | ||||||||||||
2021 | 29.32 | 29.21 | 38.55 | 49.13 | 56.61 | 71.50 | 73.58 | 71.74 | 68.37 | 52.77 | 46.33 | 30.84 | 51.50 | |||||||||||||
2022 | 24.26 | 31.64 | 39.00 | 46.83 | 58.58 | 69.27 | 72.76 | b | 71.48 | 68.83 | 52.61 | 36.15 | d | 25.32 | 49.73 | |||||||||||
2023 | 24.06 | 29.46 | 31.81 | 43.13 | 57.58 | 63.57 | 76.90 | 72.55 | 65.90 | t | 55.13 | 41.67 | 30.77 | 47.88 | a | |||||||||||
2024 | 26.45 | 32.03 | 38.06 | 49.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.18 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.04 | 31.96 | 38.12 | 46.05 | 56.44 | 67.70 | 72.05 | 69.58 | 63.97 | 53.51 | 38.96 | 27.83 | 49.49 | |||||||||||||
S.D. | 3.54 | 3.13 | 3.27 | 3.55 | 3.24 | 3.13 | 1.98 | 1.94 | 2.84 | 3.70 | 4.21 | 3.58 | 1.36 | |||||||||||||
SKEW | -0.27 | -0.07 | 0.24 | 0.02 | -0.18 | -0.08 | -0.22 | 0.06 | -0.33 | -0.46 | 0.15 | 0.55 | 0.32 | |||||||||||||
MAX | 35.94 | 37.96 | 45.76 | 53.87 | 64.33 | 73.83 | 76.90 | 74.74 | 69.13 | 61.58 | 49.41 | 39.34 | 52.71 | |||||||||||||
MIN | 15.62 | 25.38 | 30.97 | 37.87 | 47.38 | 61.35 | 66.84 | 65.19 | 57.00 | 42.84 | 30.87 | 21.71 | 46.29 | |||||||||||||
YRS | 83 | 83 | 84 | 83 | 83 | 82 | 81 | 82 | 80 | 82 | 83 | 83 | 76 |