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 | 45.41 | t | 32.39 | b | 34.29 | 33.34 | j | |
1941 | 32.52 | 37.84 | 43.18 | 48.17 | 52.69 | 58.72 | 69.21 | 66.00 | a | 52.93 | 47.19 | 41.17 | 34.43 | d | 48.67 | |||||||||||
1942 | 21.19 | 31.12 | 38.34 | 48.07 | 49.10 | 54.78 | 65.26 | 66.87 | 58.55 | 49.37 | 35.30 | 32.27 | 45.85 | |||||||||||||
1943 | 22.45 | c | 33.68 | 35.40 | 48.33 | 49.31 | 54.90 | 65.34 | 63.66 | 60.98 | 50.00 | b | 37.88 | 29.81 | 45.98 | |||||||||||
1944 | 31.37 | 29.55 | 33.92 | 46.32 | 53.63 | 57.88 | 64.98 | 63.32 | 60.58 | 55.98 | b | 36.22 | 27.71 | 46.79 | ||||||||||||
1945 | 32.67 | a | 34.39 | a | 36.21 | b | 42.55 | b | 53.60 | 56.17 | 66.06 | 64.69 | 54.76 | a | 50.71 | 35.40 | 29.94 | 46.43 | ||||||||
1946 | 29.50 | b | 32.70 | 40.00 | 46.85 | 53.48 | 56.82 | 65.48 | 65.94 | 57.07 | a | 42.57 | b | 35.48 | b | 33.48 | e | 46.61 | ||||||||
1947 | 24.92 | 35.73 | 41.97 | 47.07 | 57.90 | 56.77 | 64.27 | 63.02 | 60.43 | b | 50.61 | 34.58 | 32.84 | b | 47.51 | |||||||||||
1948 | 29.32 | 28.87 | b | 35.45 | 43.63 | 51.23 | 62.63 | 62.16 | 62.66 | 57.60 | 48.50 | 35.12 | 22.68 | 44.99 | ||||||||||||
1949 | 6.74 | d | 27.42 | b | 39.50 | 49.93 | 56.68 | 59.35 | 65.19 | 65.94 | 60.47 | 44.37 | 44.40 | 30.50 | f | 47.27 | a | |||||||||
1950 | 11.09 | d | 31.91 | 37.18 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.73 | i | ||
1951 | ----- | z | ----- | z | ----- | z | 46.75 | ----- | z | ----- | z | 70.58 | l | 69.93 | x | 55.59 | s | 47.26 | 36.63 | 25.93 | d | 39.14 | h | |||
1952 | 24.05 | 31.36 | 36.34 | b | 49.43 | 53.61 | 57.97 | 65.37 | 65.29 | 61.05 | 53.63 | 33.75 | 32.33 | b | 47.02 | |||||||||||
1953 | 39.77 | 35.59 | 39.82 | 44.88 | 50.69 | 53.92 | 63.60 | 64.60 | 60.38 | a | 51.35 | 42.23 | b | 35.26 | 48.51 | |||||||||||
1954 | 29.24 | 36.77 | 36.42 | 43.65 | 52.95 | 54.35 | 63.35 | 61.23 | 57.03 | 47.34 | 43.22 | 30.53 | 46.34 | |||||||||||||
1955 | 28.65 | 29.94 | a | 29.90 | 40.65 | 48.69 | 60.28 | 63.97 | 64.82 | 58.35 | 49.15 | 30.05 | 29.23 | 44.47 | ||||||||||||
1956 | 30.82 | 24.24 | 36.21 | 49.20 | 56.16 | 58.30 | c | 68.08 | 65.70 | a | 59.72 | a | 46.85 | 34.63 | 33.56 | e | 46.96 | |||||||||
1957 | 13.52 | c | 30.91 | 39.52 | a | 46.15 | 55.73 | 60.20 | 64.11 | 62.42 | 62.08 | 47.40 | 36.13 | 36.17 | h | 47.11 | a | |||||||||
1958 | 33.68 | 42.12 | 39.11 | 44.47 | 59.05 | 62.57 | 69.34 | 71.23 | 58.45 | 52.08 | 37.43 | 36.11 | 50.47 | |||||||||||||
1959 | 32.40 | b | 31.93 | 39.73 | 46.63 | 49.50 | a | 59.23 | 66.50 | 62.27 | 55.68 | 47.85 | 35.19 | a | 32.71 | 46.64 | ||||||||||
1960 | 24.40 | b | 32.18 | a | 40.10 | 46.35 | 50.74 | 59.03 | 69.73 | 63.21 | 59.68 | 49.48 | 37.07 | 29.97 | 46.83 | |||||||||||
1961 | 33.05 | 38.93 | 40.19 | 44.33 | 52.29 | 64.48 | 68.19 | 71.39 | 53.83 | 46.42 | 34.16 | a | 29.76 | 48.09 | ||||||||||||
1962 | 27.11 | 34.00 | 35.97 | 48.52 | 48.47 | 57.21 | b | 63.92 | 63.26 | 59.15 | 48.77 | 39.10 | 35.05 | 46.71 | ||||||||||||
1963 | 22.60 | 39.23 | 40.37 | a | 43.80 | 53.06 | 59.07 | 62.29 | 65.77 | 65.07 | 52.19 | 39.75 | 29.50 | 47.73 | ||||||||||||
1964 | 31.21 | 32.74 | 36.11 | 42.05 | 51.40 | 58.17 | 64.85 | 61.53 | 55.33 | 50.62 | a | 35.88 | 28.21 | 45.68 | ||||||||||||
1965 | 30.97 | 36.05 | 36.08 | a | 47.62 | 51.00 | 58.03 | 66.84 | 66.26 | 54.37 | 54.55 | a | 41.78 | a | 32.66 | 48.02 | ||||||||||
1966 | 30.92 | 32.98 | a | 39.00 | b | 45.07 | 54.98 | 57.08 | 63.68 | 64.94 | 61.38 | 47.82 | 40.02 | 35.58 | 47.79 | |||||||||||
1967 | 35.21 | 37.46 | 37.18 | 41.10 | 50.80 | a | 60.83 | 67.31 | 70.90 | 63.88 | 48.92 | 38.72 | 29.75 | a | 48.51 | |||||||||||
1968 | 30.71 | 39.24 | 43.44 | 43.93 | a | 52.79 | 59.42 | 67.26 | 63.55 | 58.72 | a | 46.52 | 38.14 | a | 27.68 | 47.62 | ||||||||||
1969 | 20.68 | 30.50 | a | 38.35 | 46.98 | 55.00 | 62.50 | 64.23 | 63.98 | 59.98 | 44.85 | 39.40 | 31.61 | 46.51 | ||||||||||||
1970 | 29.65 | 38.76 | a | 36.92 | 40.08 | 52.94 | 63.37 | 67.61 | 67.35 | 53.57 | 47.42 | 38.18 | 29.45 | 47.11 | ||||||||||||
1971 | 33.23 | 35.52 | 33.97 | 43.73 | 53.94 | 54.82 | 65.31 | 70.82 | 54.05 | 45.60 | 37.62 | 27.48 | b | 46.34 | ||||||||||||
1972 | 27.13 | a | 32.78 | 42.00 | 42.37 | 55.35 | 59.62 | a | 64.82 | 68.58 | 54.52 | 48.02 | 39.42 | 25.44 | 46.67 | |||||||||||
1973 | 27.81 | 34.84 | 40.13 | 45.13 | 54.05 | 59.35 | 66.68 | 65.65 | 58.58 | 47.40 | 33.80 | 35.68 | 47.42 | |||||||||||||
1974 | 23.94 | 35.91 | 38.57 | a | 44.68 | 49.05 | a | 61.88 | ----- | z | 65.26 | 60.15 | 50.71 | 38.48 | 33.48 | 45.65 | a | |||||||||
1975 | 27.83 | a | 27.70 | 35.81 | 39.75 | 50.78 | a | 56.15 | 68.76 | 61.95 | 58.73 | 46.65 | 35.55 | a | 33.77 | 45.29 | ||||||||||
1976 | 31.76 | 32.52 | 33.56 | 43.82 | 52.40 | 54.73 | 63.40 | 62.65 | 61.62 | 48.03 | 38.14 | a | 31.87 | a | 46.21 | |||||||||||
1977 | 23.97 | 36.68 | 36.82 | 49.15 | 49.11 | 62.68 | 64.31 | 69.53 | a | 54.45 | 46.78 | a | 35.02 | 31.77 | 46.69 | |||||||||||
1978 | 31.39 | 35.38 | 42.08 | 44.37 | 49.73 | 59.25 | 64.94 | 63.66 | 55.92 | 47.94 | 29.95 | 23.60 | 45.68 | |||||||||||||
1979 | 14.39 | 30.54 | 40.79 | 44.62 | 53.87 | 60.02 | 65.60 | 66.00 | 61.77 | 50.37 | 32.98 | 35.42 | 46.36 | |||||||||||||
1980 | 23.47 | a | 34.86 | 37.35 | 49.69 | a | 51.73 | 55.10 | 64.02 | 60.11 | 58.18 | 49.29 | 38.67 | 35.40 | 46.49 | |||||||||||
1981 | 35.82 | 35.16 | 41.71 | 45.12 | 51.19 | 54.73 | 61.94 | 67.87 | 58.45 | 45.48 | 42.50 | c | 32.42 | 47.70 | ||||||||||||
1982 | 27.50 | 30.21 | 39.53 | 41.64 | a | 51.05 | a | 61.13 | 63.85 | a | 65.92 | 58.34 | a | 46.32 | a | 32.20 | b | 29.97 | 45.64 | |||||||
1983 | 36.52 | 39.04 | b | 42.95 | 44.27 | 54.10 | a | 57.93 | a | 62.24 | 68.60 | 54.47 | 48.94 | 39.72 | a | 21.85 | 47.55 | |||||||||
1984 | 31.86 | c | 35.40 | 41.22 | a | 43.88 | a | 50.15 | 57.55 | 66.18 | 67.29 | 55.78 | 44.74 | 37.88 | 25.76 | 46.47 | ||||||||||
1985 | 21.88 | a | 26.11 | 37.24 | 48.69 | a | 54.86 | c | 59.21 | a | 70.66 | 63.92 | 52.14 | b | 45.87 | 24.13 | 20.50 | b | 43.77 | |||||||
1986 | 34.79 | b | 34.48 | a | 44.81 | 45.21 | b | 54.24 | d | 63.58 | 61.60 | 69.74 | b | 54.12 | b | 50.05 | 36.16 | b | 29.58 | a | 48.20 | |||||
1987 | 27.85 | 37.14 | 41.40 | a | 51.80 | 56.61 | 62.13 | 65.55 | b | 64.55 | 61.57 | 50.97 | b | 39.84 | a | 28.56 | 49.00 | |||||||||
1988 | 27.87 | a | 37.29 | 39.57 | b | 47.95 | a | 52.89 | 59.12 | 65.05 | 65.90 | 58.41 | a | 55.96 | d | 38.47 | 30.09 | b | 48.21 | |||||||
1989 | 30.00 | 23.38 | 38.00 | 48.83 | 52.32 | 60.60 | 65.31 | 63.29 | 59.79 | b | 47.59 | c | 40.75 | 32.37 | a | 46.85 | ||||||||||
1990 | 33.89 | 32.31 | a | 41.26 | 49.62 | b | 51.61 | 59.05 | b | 68.03 | 67.53 | 64.57 | 46.42 | 40.28 | a | 22.77 | 48.11 | |||||||||
1991 | 28.84 | 41.36 | 38.15 | a | 45.93 | 50.19 | 55.35 | 65.87 | 68.98 | 61.23 | 48.68 | a | 37.69 | a | 35.50 | 48.15 | ||||||||||
1992 | 34.33 | a | 40.52 | 45.70 | a | 49.47 | 56.65 | 64.43 | 65.85 | 67.92 | 57.58 | 51.57 | b | 35.57 | 28.62 | a | 49.85 | |||||||||
1993 | 23.95 | 28.25 | 39.81 | 46.10 | a | 59.13 | 60.36 | a | 60.43 | a | 63.98 | a | 58.67 | a | 51.14 | c | 31.78 | c | 32.98 | c | 46.38 | |||||
1994 | 37.91 | b | 30.80 | c | 42.72 | a | 49.32 | b | 55.77 | a | 58.72 | a | 69.81 | 68.08 | 62.57 | a | 47.34 | c | 32.61 | b | 31.04 | d | 48.89 | |||
1995 | 32.76 | b | 37.48 | a | 39.55 | b | 44.93 | a | 54.15 | a | 56.95 | 65.53 | a | 62.11 | c | 61.07 | b | 44.59 | d | 41.20 | c | 31.67 | b | 47.67 | ||
1996 | 30.09 | d | 30.74 | d | ----- | z | 45.98 | c | 49.23 | c | 58.31 | d | 67.52 | 68.03 | 56.11 | b | 46.59 | b | 36.25 | 28.92 | 47.07 | a | ||||
1997 | 29.67 | b | 33.61 | ----- | z | 42.36 | b | 56.02 | a | 56.34 | a | 65.25 | a | 69.45 | a | 61.69 | a | 48.00 | e | 40.70 | c | 30.12 | b | 48.47 | a | |
1998 | 32.00 | 37.92 | b | 40.93 | c | 45.50 | b | 52.76 | 58.48 | 72.03 | 69.88 | a | 64.84 | a | 48.62 | f | 40.34 | b | 28.68 | c | 49.40 | a | ||||
1999 | 33.18 | c | 33.87 | a | 39.59 | c | 43.07 | b | 49.57 | a | 56.59 | a | 62.53 | b | 69.11 | 57.12 | b | 49.30 | f | 42.88 | d | 32.14 | b | 47.24 | a | |
2000 | 28.62 | g | 35.02 | g | 36.94 | e | 48.07 | i | 52.40 | g | 58.19 | c | 64.53 | b | 63.31 | e | 55.85 | j | 46.35 | a | 28.23 | b | 26.62 | c | 46.31 | e |
2001 | 29.53 | 31.19 | a | 41.85 | e | 42.80 | b | 56.88 | b | 59.71 | b | 66.90 | 68.93 | c | 62.64 | a | 48.07 | b | 41.10 | a | 30.93 | a | 48.38 | |||
2002 | 32.13 | a | 32.81 | a | 34.50 | h | 45.87 | c | 51.56 | 60.20 | 68.05 | 64.21 | 58.64 | e | 43.48 | e | 38.59 | c | 34.71 | c | 48.21 | a | ||||
2003 | 36.48 | a | 34.65 | a | 41.88 | b | 45.98 | 52.94 | 61.18 | 69.40 | 67.70 | a | 61.05 | 53.02 | a | 33.93 | c | 32.93 | a | 49.26 | ||||||
2004 | 29.40 | 34.24 | 44.16 | 48.25 | 52.81 | 59.48 | 68.16 | 68.66 | 58.23 | 49.57 | b | 38.66 | a | 35.68 | c | 48.94 | ||||||||||
2005 | 33.53 | b | 36.23 | 42.95 | a | 46.52 | c | 55.59 | b | 57.37 | 67.71 | 66.75 | a | 56.40 | d | 49.50 | b | 36.16 | e | 27.76 | 48.04 | |||||
2006 | 37.88 | a | 31.90 | c | 39.52 | 45.87 | d | 54.85 | a | 60.84 | b | 69.72 | a | 66.15 | 60.33 | a | 47.56 | 38.63 | 31.57 | b | 48.73 | |||||
2007 | 26.05 | 36.11 | a | 43.71 | e | 46.61 | c | 53.87 | a | 60.00 | 70.55 | 65.56 | 57.75 | 47.76 | 36.67 | d | 30.21 | 47.90 | ||||||||
2008 | 27.40 | 34.70 | b | 37.97 | a | 41.42 | e | 55.07 | b | 57.75 | 66.23 | 66.82 | 59.69 | a | 49.21 | b | 42.26 | a | 26.59 | b | 47.09 | |||||
2009 | 28.65 | 35.09 | 34.14 | c | 44.95 | a | 53.70 | a | ----- | z | 67.39 | 68.95 | ----- | z | 43.88 | a | 39.00 | 26.05 | 44.18 | b | ||||||
2010 | 37.35 | 38.69 | a | 42.16 | 45.57 | 49.58 | 57.42 | 65.55 | 66.53 | 58.90 | 50.73 | 35.45 | 32.92 | 48.40 | ||||||||||||
2011 | 32.37 | 29.88 | 39.63 | 41.53 | 50.21 | 56.33 | 62.47 | 67.24 | 63.48 | 49.18 | 36.88 | 31.61 | 46.73 | |||||||||||||
2012 | 32.27 | 35.48 | a | 38.90 | 48.28 | c | 52.50 | 58.12 | 67.52 | 67.58 | 61.28 | 48.29 | 41.03 | a | 32.95 | 48.68 | ||||||||||
2013 | 27.21 | 36.46 | 41.45 | 45.52 | 54.95 | 59.62 | 68.73 | 69.22 | a | 62.17 | 45.87 | 36.78 | 27.44 | 47.95 | ||||||||||||
2014 | 32.45 | 28.12 | 41.15 | 46.30 | 55.94 | 59.53 | 71.16 | 70.34 | 62.28 | 54.08 | a | 37.10 | 34.71 | 49.43 | ||||||||||||
2015 | 34.89 | 41.18 | 45.95 | 46.62 | 56.87 | 67.02 | 70.81 | 69.92 | 58.81 | c | 55.68 | 36.08 | 32.03 | 51.32 | ||||||||||||
2016 | 32.90 | 40.98 | 42.61 | 52.98 | 56.05 | 61.23 | 64.81 | b | 66.84 | 57.92 | 49.68 | 45.38 | 25.31 | 49.72 | ||||||||||||
2017 | 21.50 | 33.38 | 41.48 | a | 46.31 | a | 55.08 | 61.91 | a | 70.23 | 70.98 | d | 61.27 | 47.42 | 40.08 | 28.10 | 48.14 | |||||||||
2018 | 36.33 | d | 31.34 | 39.90 | 46.30 | 59.21 | 59.30 | 67.71 | 68.37 | 57.62 | 48.00 | a | 39.37 | 32.53 | 48.83 | |||||||||||
2019 | 33.53 | 24.70 | 33.02 | 47.87 | 56.27 | 61.87 | 65.67 | b | 68.53 | 59.63 | 42.84 | 38.53 | 34.27 | 47.23 | ||||||||||||
2020 | 34.32 | 36.57 | 39.16 | 47.17 | 54.31 | 59.10 | 65.77 | 68.79 | 62.27 | 48.90 | 39.10 | 33.76 | 49.10 | |||||||||||||
2021 | 34.97 | b | 29.93 | 41.20 | a | 47.77 | 54.60 | 67.22 | 72.69 | 69.18 | 60.73 | 48.50 | 41.78 | 30.05 | 49.88 | |||||||||||
2022 | 30.92 | 33.27 | 42.60 | 41.77 | 49.71 | 60.83 | 68.23 | a | 72.24 | 63.67 | 53.74 | 32.03 | 26.00 | a | 47.92 | |||||||||||
2023 | 33.77 | 33.25 | 37.74 | 45.33 | 60.24 | 63.37 | 69.98 | 70.03 | 60.85 | 51.45 | 38.78 | 36.95 | 50.15 | |||||||||||||
2024 | 28.90 | 37.81 | 41.70 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.14 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.40 | 33.88 | 39.36 | 45.77 | 53.28 | 59.20 | 66.27 | 66.43 | 59.03 | 48.67 | 37.37 | 30.64 | 47.54 | |||||||||||||
S.D. | 5.95 | 4.00 | 3.07 | 2.68 | 2.77 | 2.78 | 2.62 | 2.81 | 2.98 | 2.90 | 3.65 | 3.62 | 1.43 | |||||||||||||
SKEW | -1.36 | -0.30 | -0.37 | -0.00 | 0.25 | 0.46 | 0.26 | -0.06 | -0.24 | 0.47 | -0.69 | -0.60 | 0.05 | |||||||||||||
MAX | 39.77 | 42.12 | 45.95 | 52.98 | 60.24 | 67.22 | 72.69 | 72.24 | 65.07 | 55.98 | 45.38 | 36.95 | 51.32 | |||||||||||||
MIN | 6.74 | 23.38 | 29.90 | 39.75 | 48.47 | 53.92 | 60.43 | 60.11 | 52.14 | 42.57 | 24.13 | 20.50 | 43.77 | |||||||||||||
YRS | 82 | 82 | 80 | 81 | 80 | 80 | 80 | 81 | 79 | 80 | 83 | 81 | 71 |