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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | 34.96 | d | 39.09 | 43.56 | 61.58 | 67.45 | 76.53 | a | 79.48 | a | 78.47 | a | 71.53 | 58.58 | 44.47 | 42.06 | d | 58.15 | ||||||||
1949 | 30.15 | 41.31 | a | 50.93 | b | 57.35 | 67.16 | 74.98 | 78.50 | 76.55 | a | 70.07 | c | 58.16 | 53.07 | 38.70 | a | 58.08 | ||||||||
1950 | 43.48 | a | 47.71 | 49.67 | b | 59.07 | 66.55 | 75.76 | a | 76.39 | c | 76.23 | c | 69.17 | a | 65.15 | 50.28 | 43.19 | e | 60.22 | ||||||
1951 | 39.43 | a | 43.46 | 48.71 | 56.23 | 67.47 | 74.65 | c | 82.44 | 79.26 | b | 72.53 | 64.38 | b | 47.87 | d | 42.08 | 59.88 | ||||||||
1952 | 46.11 | 43.67 | 46.57 | a | 57.63 | 67.00 | i | 80.19 | a | 78.15 | 80.62 | b | 73.16 | k | 56.80 | h | 42.93 | 39.90 | 57.31 | c | ||||||
1953 | 46.37 | 41.88 | 53.52 | 57.52 | 64.42 | 81.98 | 80.48 | 78.18 | 71.28 | 56.92 | l | 49.17 | 37.77 | 60.23 | a | |||||||||||
1954 | 42.97 | 50.04 | 49.47 | 62.50 | b | 66.81 | 78.08 | 82.11 | 79.10 | 74.25 | 61.35 | 51.02 | a | 43.95 | 61.80 | |||||||||||
1955 | 39.31 | 38.82 | f | 49.80 | d | 58.05 | 65.84 | 74.48 | 76.97 | 77.77 | 72.77 | 60.88 | a | 47.65 | 45.34 | 60.81 | a | |||||||||
1956 | 43.24 | 37.38 | e | 52.47 | 57.52 | 70.66 | 79.93 | a | 79.73 | 77.55 | 73.02 | 62.32 | 46.00 | d | 41.68 | 60.12 | ||||||||||
1957 | 41.89 | 50.18 | 48.85 | 55.00 | 63.65 | 76.35 | 81.84 | 77.98 | 69.58 | 58.11 | 44.84 | a | 45.76 | 59.50 | ||||||||||||
1958 | 34.91 | h | 44.54 | d | 43.94 | 55.35 | 68.32 | 78.22 | 80.15 | 77.89 | 69.04 | e | 56.69 | 50.34 | a | 42.31 | 60.62 | a | ||||||||
1959 | 39.48 | 40.93 | 49.38 | a | 57.45 | a | 68.23 | 76.42 | 77.71 | 77.68 | 71.67 | a | 56.52 | b | 45.90 | 41.68 | a | 58.59 | ||||||||
1960 | 36.33 | b | 38.17 | 47.55 | c | 59.64 | a | 66.26 | 76.82 | 75.47 | 76.10 | 70.02 | 58.35 | 48.13 | 34.06 | 57.24 | ||||||||||
1961 | 35.11 | 42.38 | 48.98 | 55.97 | 66.79 | 74.65 | 76.18 | 75.61 | 67.00 | 59.47 | 44.20 | 37.24 | 56.96 | |||||||||||||
1962 | 34.81 | 46.44 | a | 44.18 | 58.52 | 68.69 | 73.25 | 75.55 | 77.79 | 69.17 | 60.52 | 47.98 | 40.37 | 58.11 | ||||||||||||
1963 | 32.71 | 42.04 | 48.63 | 59.30 | 67.40 | 72.92 | 79.63 | 76.31 | 70.55 | 62.15 | 48.65 | 36.38 | a | 58.05 | ||||||||||||
1964 | 37.40 | 35.03 | 46.50 | 56.47 | 67.42 | 76.02 | 80.26 | 78.19 | 70.53 | 61.63 | 48.53 | 41.42 | 58.28 | |||||||||||||
1965 | 43.87 | 41.02 | 43.32 | 59.90 | 65.82 | 73.37 | 79.79 | 75.37 | 69.17 | 58.73 | 53.73 | 42.29 | 58.86 | |||||||||||||
1966 | 32.18 | 39.20 | 51.27 | 58.92 | 68.23 | 73.97 | a | 82.06 | 73.89 | 70.32 | 57.87 | 51.23 | 37.80 | a | 58.08 | |||||||||||
1967 | 41.02 | 43.34 | 54.63 | 61.62 | 66.45 | 74.50 | 78.97 | 73.10 | 68.58 | 61.74 | 48.53 | a | 35.16 | 58.97 | ||||||||||||
1968 | 39.52 | 43.40 | 47.58 | 54.93 | 65.63 | 76.27 | 75.50 | a | 74.63 | 68.52 | 61.58 | 47.27 | 40.66 | 57.96 | ||||||||||||
1969 | 45.40 | a | 42.55 | 42.06 | 59.22 | 66.52 | b | 73.53 | a | 81.23 | 78.95 | 69.55 | 56.56 | 46.30 | 42.02 | 58.66 | ||||||||||
1970 | 37.35 | a | 46.61 | 45.60 | a | 56.25 | b | 68.10 | 73.68 | 78.42 | 77.92 | k | 69.60 | 55.52 | 48.60 | 43.42 | a | 56.65 | a | |||||||
1971 | 39.36 | b | 41.91 | 51.06 | 55.74 | a | 64.72 | a | 75.47 | a | 78.13 | 73.00 | 68.28 | 57.35 | 48.38 | 38.74 | 57.68 | |||||||||
1972 | 40.60 | 44.53 | 55.52 | e | 60.85 | 66.66 | 75.18 | 75.53 | 74.05 | a | 68.45 | b | 59.47 | 39.57 | c | ----- | z | 60.04 | a | |||||||
1973 | 36.50 | n | 39.62 | c | 47.15 | 50.83 | a | 63.18 | a | 72.30 | 75.77 | 75.74 | 67.20 | 58.98 | 50.02 | a | 41.09 | c | 58.35 | a | ||||||
1974 | 39.41 | d | 40.75 | 53.34 | 57.41 | a | 70.78 | b | 75.48 | 78.16 | 73.74 | 63.05 | 59.10 | 47.65 | c | 35.46 | h | 59.90 | a | |||||||
1975 | 38.64 | c | ----- | z | 48.66 | 53.78 | 62.50 | 73.75 | 74.26 | 75.05 | 65.98 | a | 58.27 | 47.22 | 39.81 | 57.99 | a | |||||||||
1976 | 36.35 | a | 47.26 | 47.79 | 58.12 | 61.74 | 73.38 | 74.32 | 75.40 | a | 67.38 | 52.08 | 41.95 | a | 37.63 | d | 56.12 | |||||||||
1977 | 32.57 | a | 41.62 | 45.50 | 57.23 | 66.77 | 76.43 | 79.05 | a | 77.37 | 71.33 | 58.92 | 48.22 | 45.03 | 58.34 | |||||||||||
1978 | 33.56 | 35.98 | 48.24 | 59.57 | 64.17 | a | 74.58 | 78.69 | 74.63 | 68.00 | 57.53 | a | 46.73 | 34.25 | a | 56.33 | ||||||||||
1979 | 30.91 | d | 39.91 | 46.81 | 56.17 | 62.97 | 69.67 | 77.78 | b | 73.48 | 68.02 | 60.58 | a | 41.38 | 39.68 | 55.61 | ||||||||||
1980 | 38.19 | 40.48 | a | 46.38 | f | 52.57 | b | 62.98 | b | 78.47 | 82.42 | 76.26 | 69.93 | 54.66 | b | 43.80 | 42.26 | d | 58.37 | a | ||||||
1981 | 39.39 | 43.00 | 46.79 | 59.63 | 64.81 | 76.43 | 78.46 | c | 74.35 | 67.75 | 57.24 | 50.03 | 41.85 | 58.31 | ||||||||||||
1982 | 37.72 | b | 38.59 | 49.57 | a | 56.05 | b | 65.88 | a | 73.60 | 78.27 | 77.98 | a | 70.24 | a | 56.58 | a | 45.08 | 36.19 | 57.15 | ||||||
1983 | 37.10 | b | 41.46 | b | 47.59 | d | 51.18 | b | 61.85 | 71.05 | a | 79.02 | 79.02 | 73.41 | b | 60.48 | 48.97 | a | 31.74 | 56.91 | ||||||
1984 | 35.15 | a | 42.95 | a | 46.87 | a | 54.77 | 68.31 | 73.91 | a | 76.37 | 75.21 | 67.40 | 53.95 | a | 46.53 | a | 38.47 | 56.66 | |||||||
1985 | 34.39 | d | 38.36 | 50.42 | 59.25 | 66.24 | 73.68 | 77.84 | 77.29 | 67.98 | 57.29 | 48.63 | 36.45 | 57.32 | ||||||||||||
1986 | 42.02 | 42.45 | 53.08 | 59.92 | 66.20 | a | 72.45 | 78.05 | 75.74 | 69.50 | 55.79 | 44.30 | 36.87 | 58.03 | ||||||||||||
1987 | 35.21 | c | 41.82 | 45.68 | 54.63 | 64.23 | 73.37 | 77.58 | 75.32 | 68.28 | 59.23 | 46.18 | 36.56 | 56.51 | ||||||||||||
1988 | 34.27 | 42.84 | 47.42 | 54.97 | a | 64.44 | 74.17 | 76.05 | 75.67 | a | 67.37 | 59.58 | 49.00 | 36.35 | 56.84 | |||||||||||
1989 | 40.03 | 38.43 | 51.95 | 59.48 | a | 69.77 | 74.16 | b | 78.42 | 76.06 | 67.52 | 58.82 | 47.88 | 33.03 | 57.96 | |||||||||||
1990 | 37.05 | a | 40.86 | 47.42 | 56.93 | 64.71 | 81.07 | 76.37 | 73.45 | 70.78 | 58.35 | 48.07 | 34.27 | a | 57.44 | |||||||||||
1991 | 35.47 | 44.22 | a | 48.81 | 58.07 | 68.19 | 75.67 | 74.60 | 74.53 | 65.50 | a | 58.68 | 43.03 | 37.92 | 57.06 | |||||||||||
1992 | 35.32 | 44.00 | 50.50 | 59.40 | 63.81 | 71.58 | 78.03 | 74.79 | 69.77 | 61.32 | 43.20 | 37.03 | 57.40 | |||||||||||||
1993 | 37.84 | 40.31 | a | 49.42 | 57.53 | 65.58 | a | 75.38 | 79.58 | a | 75.80 | a | 68.52 | 57.25 | a | 42.63 | 39.66 | 57.46 | ||||||||
1994 | 37.48 | 40.39 | 50.80 | a | 57.17 | a | 66.21 | 79.12 | 79.52 | 78.48 | 70.15 | 58.32 | a | 46.90 | 43.47 | 59.00 | ||||||||||
1995 | 39.00 | 47.05 | 48.70 | a | 54.48 | 65.21 | b | 73.25 | 79.06 | 79.16 | 69.02 | a | 58.69 | 50.86 | a | 41.52 | 58.83 | |||||||||
1996 | 39.34 | 44.05 | 46.00 | a | 57.00 | a | 73.47 | 77.35 | 78.89 | 76.05 | a | 66.85 | 58.12 | a | 47.65 | 42.45 | 58.93 | |||||||||
1997 | 34.18 | 38.70 | 51.39 | 51.34 | a | 65.08 | 73.08 | 78.27 | 75.97 | a | 71.90 | 58.73 | 45.05 | 33.10 | 56.40 | |||||||||||
1998 | 39.58 | 42.71 | 46.08 | a | 53.81 | a | 68.52 | a | 76.38 | 80.47 | 75.44 | 74.13 | 59.85 | a | 49.78 | 40.19 | b | 58.91 | ||||||||
1999 | 42.77 | 47.15 | b | 49.02 | a | 53.83 | a | 63.61 | 72.88 | 77.74 | 76.34 | b | 68.07 | 59.62 | a | 51.52 | a | 38.79 | 58.45 | |||||||
2000 | 42.73 | 48.62 | 50.91 | b | 59.40 | a | 71.58 | 75.48 | 80.47 | 80.16 | 72.82 | 56.80 | a | 40.89 | b | 37.28 | a | 59.76 | ||||||||
2001 | 34.73 | a | 42.80 | 47.13 | 59.95 | 67.73 | a | 77.22 | 82.05 | 78.11 | 71.88 | 59.47 | 54.42 | f | 39.29 | 60.03 | a | |||||||||
2002 | 40.45 | b | 40.18 | 47.10 | 61.66 | a | 68.37 | a | 79.78 | a | 78.73 | 79.44 | 70.25 | b | 56.18 | 45.52 | 39.79 | 58.95 | ||||||||
2003 | 41.84 | 42.07 | a | 50.98 | b | 59.22 | 68.37 | 73.80 | b | 81.42 | 79.85 | 69.79 | a | 63.30 | a | 49.38 | 41.53 | 60.13 | ||||||||
2004 | 41.28 | a | 38.80 | a | 53.53 | 55.58 | 69.15 | 74.92 | 76.44 | 73.30 | a | 69.00 | 58.48 | 44.66 | a | 39.47 | 57.88 | |||||||||
2005 | 43.90 | 43.41 | a | 47.37 | 56.68 | 65.08 | a | ----- | z | 80.10 | 75.92 | 72.58 | 59.35 | 49.20 | 39.93 | c | 57.59 | a | ||||||||
2006 | 43.16 | b | 41.87 | b | 50.18 | 61.34 | b | 71.73 | 79.97 | 80.31 | 76.42 | 65.97 | 58.50 | 50.08 | 38.89 | 59.87 | ||||||||||
2007 | 32.77 | 43.50 | 52.07 | a | 54.79 | a | 64.65 | 74.42 | 78.53 | 80.47 | 72.83 | 61.38 | a | 48.55 | a | 41.02 | 58.75 | |||||||||
2008 | 36.14 | b | 44.29 | 49.87 | a | 56.95 | a | 66.16 | b | 78.95 | b | 77.32 | 76.58 | 68.82 | 59.06 | 49.05 | 39.48 | a | 58.56 | |||||||
2009 | 41.84 | 46.39 | 52.45 | a | 56.76 | a | 68.74 | b | 77.10 | 79.74 | 78.81 | 68.16 | b | 56.73 | 49.05 | a | 35.31 | 59.26 | ||||||||
2010 | 37.66 | 38.80 | a | 48.11 | v | ----- | z | 72.10 | u | 80.03 | 79.27 | 78.32 | 74.63 | 61.97 | a | 50.98 | i | 43.98 | h | 64.38 | e | |||||
2011 | 38.62 | a | 38.92 | c | 54.47 | a | 61.33 | d | 66.37 | a | 80.42 | 83.42 | 83.08 | 71.67 | 60.72 | b | 47.20 | c | 33.07 | c | 59.94 | |||||
2012 | 42.25 | e | 41.73 | e | 53.66 | b | 62.98 | 69.92 | 81.13 | 81.45 | 80.55 | 72.07 | 60.45 | a | ----- | z | 40.63 | a | 62.44 | a | ||||||
2013 | 37.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.26 | 78.23 | 71.27 | 58.02 | 46.00 | 37.44 | 58.02 | e | |||||||
2014 | 38.21 | 42.13 | a | 47.53 | 56.73 | 65.90 | 77.18 | 77.60 | 75.85 | 69.34 | a | 61.19 | 44.05 | 40.55 | 58.02 | |||||||||||
2015 | 35.76 | 42.23 | 48.95 | 57.32 | 63.44 | 75.63 | 79.81 | 78.21 | 74.53 | 60.85 | 46.87 | 41.60 | a | 58.77 | ||||||||||||
2016 | 38.94 | 45.83 | 51.97 | a | 57.72 | a | 63.63 | 78.12 | a | 83.59 | d | 83.59 | d | 71.35 | 64.56 | 51.40 | 40.68 | 60.95 | ||||||||
2017 | 40.68 | 50.39 | 55.85 | 58.97 | 66.27 | 78.18 | 81.34 | 76.06 | 71.40 | 60.24 | 53.73 | 41.37 | 61.21 | |||||||||||||
2018 | 37.73 | 43.41 | 52.69 | 57.37 | 72.79 | 80.73 | 80.77 | 78.66 | 71.15 | 58.35 | a | 44.30 | 38.77 | 59.73 | ||||||||||||
2019 | 39.84 | 43.23 | 47.48 | 58.82 | 64.92 | 75.43 | 81.66 | 82.55 | a | 77.03 | 55.95 | a | 46.38 | 42.15 | 59.62 | |||||||||||
2020 | 41.15 | 41.33 | 53.52 | 58.67 | 73.05 | a | 80.63 | 83.70 | a | 82.81 | 68.92 | 58.37 | 52.55 | 39.98 | 61.22 | |||||||||||
2021 | 38.26 | 40.20 | 49.58 | 56.85 | 68.44 | 78.90 | 77.52 | 77.52 | 74.03 | 60.31 | 50.40 | 47.37 | 59.95 | |||||||||||||
2022 | 37.72 | a | 36.89 | 48.63 | 59.67 | 71.34 | 79.12 | 84.53 | 78.63 | 74.10 | 59.47 | 45.47 | 39.66 | 59.60 | ||||||||||||
2023 | 41.27 | c | 42.68 | 50.34 | 57.12 | 69.16 | 76.65 | 84.61 | 82.74 | 75.07 | 61.10 | 50.27 | 43.90 | 61.24 | ||||||||||||
2024 | 36.74 | 46.05 | 50.56 | 59.47 | 67.46 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.21 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.50 | 42.40 | 49.26 | 57.51 | 66.76 | 76.00 | 79.02 | 77.18 | 70.11 | 59.08 | 47.42 | 39.57 | 58.53 | |||||||||||||
S.D. | 3.57 | 3.23 | 2.96 | 2.56 | 2.65 | 2.72 | 2.39 | 2.47 | 2.53 | 2.35 | 3.03 | 3.23 | 1.39 | |||||||||||||
SKEW | -0.04 | 0.37 | 0.03 | -0.36 | 0.47 | 0.28 | 0.24 | 0.58 | 0.19 | 0.01 | -0.25 | -0.24 | 0.22 | |||||||||||||
MAX | 46.37 | 50.39 | 55.85 | 62.98 | 73.47 | 81.98 | 84.61 | 83.59 | 77.03 | 65.15 | 53.73 | 47.37 | 61.80 | |||||||||||||
MIN | 30.15 | 35.03 | 42.06 | 50.83 | 61.74 | 69.67 | 74.26 | 73.00 | 63.05 | 52.08 | 39.57 | 31.74 | 55.61 | |||||||||||||
YRS | 75 | 74 | 74 | 75 | 73 | 74 | 76 | 75 | 75 | 74 | 73 | 73 | 61 |