YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.40 | 68.68 | 67.58 | 60.97 | 52.71 | 28.03 | 27.39 | 53.39 | e | |||||||
1939 | 33.42 | 27.25 | 43.32 | 47.97 | 58.19 | 68.20 | 70.52 | 65.90 | 61.53 | 51.52 | 37.57 | 30.32 | 49.64 | |||||||||||||
1940 | 23.55 | 33.86 | 41.58 | 48.27 | 58.35 | 63.69 | a | ----- | z | 67.42 | 61.83 | 52.32 | 38.30 | 33.94 | 47.56 | a | ||||||||||
1941 | 35.52 | 38.75 | 39.10 | 49.83 | 59.48 | 63.53 | 68.00 | 67.65 | 64.67 | f | 56.68 | 38.60 | 32.77 | 49.99 | a | |||||||||||
1942 | 27.32 | 31.43 | 36.00 | 48.93 | 56.23 | 65.67 | 67.68 | 67.94 | 58.37 | 49.13 | 38.50 | 31.63 | d | 48.23 | ||||||||||||
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 | 23.90 | 32.21 | 35.94 | 54.37 | 60.48 | 69.60 | 70.42 | 69.74 | 59.90 | 50.94 | 32.50 | 34.65 | 49.55 | |||||||||||||
1949 | 26.35 | 35.00 | 41.77 | 48.03 | 60.94 | 67.03 | 71.03 | 67.68 | 62.87 | 48.97 | 36.77 | 32.35 | 49.90 | |||||||||||||
1950 | 34.32 | 36.93 | 39.32 | 49.40 | 58.48 | 68.57 | 70.42 | 67.77 | 63.80 | 54.32 | 34.40 | 27.71 | 50.45 | |||||||||||||
1951 | 24.97 | 32.04 | 39.26 | 48.43 | 59.39 | 67.23 | 72.03 | 71.06 | 61.97 | 52.81 | 34.43 | 31.32 | 49.58 | |||||||||||||
1952 | 32.23 | 32.72 | 38.23 | 48.53 | 57.29 | 68.70 | 68.13 | 71.23 | 61.87 | 44.26 | 35.53 | 27.81 | 48.88 | |||||||||||||
1953 | 32.06 | 30.29 | 43.52 | 48.80 | 56.74 | 72.87 | 73.48 | 70.00 | 59.60 | 52.32 | 39.00 | 26.52 | 50.43 | |||||||||||||
1954 | 30.97 | 35.07 | 41.00 | 53.80 | 57.45 | 68.33 | 71.61 | 71.48 | 66.80 | 54.26 | 38.23 | 29.29 | 51.53 | |||||||||||||
1955 | 30.29 | 30.64 | 39.00 | 48.83 | 59.26 | 66.73 | 70.45 | 69.65 | 64.70 | 50.06 | 37.63 | 31.32 | 49.88 | |||||||||||||
1956 | 29.35 | 32.07 | 39.84 | 49.13 | 63.19 | 71.47 | 71.90 | 69.39 | 63.77 | 53.94 | 32.93 | 31.55 | 50.71 | |||||||||||||
1957 | 32.71 | 44.79 | 44.19 | 47.53 | 58.13 | 66.87 | 72.55 | 71.58 | 62.27 | 52.65 | 39.00 | 32.13 | 52.03 | |||||||||||||
1958 | 29.61 | 35.21 | 38.90 | 48.20 | 58.84 | 70.53 | 72.29 | 69.90 | 65.50 | 51.97 | 39.43 | 26.55 | 50.58 | |||||||||||||
1959 | 25.58 | 33.89 | 35.26 | 47.70 | 60.00 | 66.43 | 68.06 | 70.16 | 63.47 | 50.16 | 33.27 | 33.16 | 48.93 | |||||||||||||
1960 | 30.52 | 30.03 | 37.13 | 49.17 | 57.77 | 69.07 | 69.10 | 69.39 | 62.20 | 53.90 | 39.87 | 28.94 | 49.76 | |||||||||||||
1961 | 26.71 | 32.07 | 39.35 | 47.27 | 58.52 | 67.13 | 67.65 | 67.65 | 62.07 | 50.10 | 36.93 | 30.71 | 48.85 | |||||||||||||
1962 | 23.77 | 38.14 | 39.32 | 52.67 | 61.71 | 67.27 | 71.06 | 69.32 | 64.30 | 53.68 | 40.73 | 32.55 | 51.21 | |||||||||||||
1963 | 23.26 | 31.57 | 41.77 | 54.37 | 61.03 | 67.67 | 72.26 | 70.52 | 64.03 | 53.00 | 37.93 | 26.39 | 50.32 | |||||||||||||
1964 | 23.97 | 25.69 | 38.26 | 49.10 | 60.87 | 66.00 | 72.58 | 71.52 | 64.67 | 49.06 | 39.10 | 31.58 | 49.37 | |||||||||||||
1965 | 32.16 | 31.04 | 35.55 | 53.57 | 60.23 | 67.93 | 71.03 | 68.32 | 62.57 | 46.94 | 42.10 | 36.81 | 50.69 | |||||||||||||
1966 | 25.03 | 28.75 | 42.39 | 49.03 | 60.00 | 67.07 | 73.35 | 68.81 | 63.27 | 45.68 | 40.73 | 25.61 | 49.14 | |||||||||||||
1967 | 24.29 | 31.46 | 44.10 | 56.83 | 56.26 | 68.77 | 71.32 | 67.26 | 61.30 | 48.94 | 41.87 | 30.06 | 50.20 | |||||||||||||
1968 | 33.61 | 34.34 | 41.68 | 49.17 | 58.65 | 66.10 | 68.87 | 68.23 | 58.67 | 50.97 | 37.77 | 26.03 | 49.51 | |||||||||||||
1969 | 34.00 | 35.68 | 34.45 | 51.83 | 58.23 | 66.17 | 72.06 | 70.39 | 62.47 | 50.77 | 36.53 | 31.74 | 50.36 | |||||||||||||
1970 | 26.06 | 32.11 | 36.35 | 46.90 | 54.29 | 64.43 | 68.35 | 68.10 | 62.20 | 44.97 | 33.10 | 31.26 | 47.34 | |||||||||||||
1971 | 27.58 | 29.29 | 36.10 | 46.67 | 57.90 | 67.37 | 69.42 | 66.35 | 62.50 | 52.45 | 38.47 | 33.06 | 48.93 | |||||||||||||
1972 | 27.03 | 29.72 | 43.52 | 51.60 | 58.65 | 65.37 | 68.84 | 65.39 | 61.07 | 50.94 | 32.87 | 24.26 | 48.27 | |||||||||||||
1973 | 25.87 | 29.75 | 40.35 | 43.67 | 53.84 | 63.13 | 66.97 | 65.39 | 60.23 | 47.90 | 38.60 | 25.10 | 46.73 | |||||||||||||
1974 | 25.90 | 28.64 | 44.42 | 50.53 | 61.45 | 66.90 | 69.81 | 66.52 | 56.93 | 53.06 | 38.63 | 30.00 | 49.40 | |||||||||||||
1975 | 29.58 | 32.61 | 38.55 | 46.40 | 53.65 | 65.93 | 67.00 | 66.61 | 57.83 | 47.35 | 33.60 | 26.97 | 47.17 | |||||||||||||
1976 | 24.97 | 33.72 | 38.77 | 51.77 | 54.71 | 66.83 | 67.19 | 66.16 | 61.17 | 43.35 | 31.17 | 23.90 | 46.98 | |||||||||||||
1977 | 25.00 | 32.25 | 37.71 | 50.10 | 62.35 | 68.40 | 71.58 | 73.77 | 67.00 | 53.00 | 35.73 | 31.29 | 50.68 | |||||||||||||
1978 | 25.65 | 30.39 | 41.10 | 51.07 | 60.03 | 68.77 | 72.32 | 68.94 | 63.57 | 51.65 | 43.47 | 28.42 | 50.45 | |||||||||||||
1979 | 26.61 | 29.54 | 38.77 | 49.10 | 56.26 | 63.40 | 70.29 | 66.71 | 58.70 | 47.26 | 32.13 | 29.23 | 47.33 | |||||||||||||
1980 | 30.65 | 33.41 | 39.00 | 44.37 | 58.42 | 71.27 | 73.29 | 70.03 | 64.87 | 47.71 | 35.07 | 31.87 | 50.00 | |||||||||||||
1981 | 32.65 | 32.64 | 41.48 | 51.40 | 56.77 | 66.03 | 71.00 | 67.06 | 62.47 | 52.52 | 37.53 | 30.03 | 50.13 | |||||||||||||
1982 | 28.20 | a | 32.96 | b | 40.94 | ----- | z | 59.06 | 66.50 | 71.35 | 70.87 | 64.60 | 50.23 | 40.63 | 31.90 | 50.66 | a | |||||||||
1983 | 29.45 | 35.25 | 43.84 | 46.90 | 55.13 | 64.83 | 71.94 | 70.16 | 66.10 | 56.29 | 42.77 | 25.35 | 50.67 | |||||||||||||
1984 | 27.90 | 29.55 | 37.52 | 45.50 | 60.68 | 67.90 | 68.39 | 67.58 | 59.13 | 51.10 | 39.17 | 36.84 | 49.27 | |||||||||||||
1985 | 26.19 | 31.89 | 45.13 | 50.10 | 57.84 | 64.20 | 67.57 | a | 69.60 | f | 62.32 | k | 51.61 | h | 41.33 | i | 23.09 | i | 48.99 | e | ||||||
1986 | 27.04 | h | 33.30 | h | 39.19 | j | 51.68 | h | 56.36 | i | 66.05 | i | 67.22 | h | 68.10 | j | ----- | z | 51.59 | i | 36.25 | j | 28.67 | m | ----- | z |
1987 | 25.73 | i | 35.85 | h | 32.24 | n | 41.18 | h | 56.00 | o | 63.41 | h | 67.13 | h | 67.14 | j | 56.77 | h | 49.14 | i | 32.86 | i | 24.39 | h | ----- | z |
1988 | 26.56 | o | 30.72 | 35.29 | 45.97 | 58.00 | 66.60 | 69.42 | 69.35 | 60.37 | 51.26 | 35.73 | 27.74 | 50.04 | a | |||||||||||
1989 | 30.10 | 32.11 | 39.32 | 51.93 | 60.10 | 66.10 | 71.77 | 69.52 | 59.73 | 49.74 | 36.03 | 22.10 | 49.05 | |||||||||||||
1990 | 27.68 | 32.89 | 42.45 | 52.83 | 56.84 | 72.97 | 69.06 | 66.23 | 63.20 | 47.10 | 40.47 | 26.81 | 49.88 | |||||||||||||
1991 | 29.23 | 35.61 | 40.52 | 47.30 | 60.03 | 67.70 | 68.13 | 67.10 | 59.40 | 47.90 | a | 34.30 | 33.84 | 49.25 | ||||||||||||
1992 | 29.71 | 35.66 | 41.29 | 48.07 | 56.81 | 64.10 | 69.58 | 67.29 | 61.33 | 49.06 | 32.20 | 31.87 | 48.91 | |||||||||||||
1993 | 31.74 | 33.21 | 39.26 | 48.30 | 56.29 | 67.13 | 71.19 | 69.84 | 60.43 | 46.06 | 32.67 | 29.26 | 48.78 | |||||||||||||
1994 | 26.65 | 31.21 | 40.97 | 47.60 | 60.58 | 70.73 | 71.13 | 70.90 | 60.17 | 52.26 | 40.30 | 34.68 | 50.60 | |||||||||||||
1995 | 31.39 | 37.21 | 40.94 | 46.20 | 59.32 | 65.00 | 69.32 | 70.90 | 62.47 | 47.45 | 37.50 | 29.19 | 49.74 | |||||||||||||
1996 | 25.81 | 33.34 | 33.84 | 46.50 | 63.45 | 69.37 | 70.94 | 68.19 | 60.63 | 46.94 | 36.90 | 27.90 | a | 48.65 | ||||||||||||
1997 | 26.94 | 33.32 | 40.94 | 45.77 | 59.00 | 65.60 | 71.48 | 69.45 | 64.73 | 49.71 | 35.70 | 26.94 | 49.13 | |||||||||||||
1998 | 31.35 | 34.82 | 39.03 | 43.87 | 59.68 | 69.43 | 73.35 | 69.45 | 65.73 | 55.74 | 43.60 | 31.26 | 51.44 | |||||||||||||
1999 | 30.65 | 35.32 | 41.65 | 48.73 | 58.48 | 67.03 | 70.48 | 70.03 | 62.60 | 45.48 | 37.03 | 26.81 | 49.53 | |||||||||||||
2000 | 29.81 | 36.62 | 42.03 | 50.87 | 62.53 | a | 68.27 | 73.23 | 70.87 | 63.27 | 52.87 | 36.53 | 28.71 | 51.30 | ||||||||||||
2001 | 30.32 | 35.86 | 40.87 | 50.67 | 60.94 | 70.37 | 73.55 | 70.19 | 63.37 | 51.94 | 42.60 | 31.32 | 51.83 | |||||||||||||
2002 | 33.39 | 32.61 | 40.26 | 58.53 | 64.26 | 73.47 | 73.26 | 75.71 | 66.31 | d | 57.00 | 40.37 | 33.39 | 54.04 | ||||||||||||
2003 | 32.32 | 36.75 | 44.26 | 52.03 | 61.26 | 70.60 | 72.84 | 73.81 | 66.23 | 55.87 | 44.97 | 29.94 | 53.41 | |||||||||||||
2004 | 36.90 | 36.93 | 50.32 | 52.43 | 61.74 | 70.40 | 72.73 | a | 70.48 | 65.23 | 57.48 | 42.87 | 32.48 | 54.17 | ||||||||||||
2005 | 39.03 | 41.11 | 41.77 | 49.13 | 61.77 | 71.03 | 72.74 | 71.10 | 68.50 | 55.58 | 37.73 | 29.71 | 53.27 | |||||||||||||
2006 | 33.87 | 35.32 | 47.03 | a | 56.50 | 64.13 | 71.50 | 74.77 | 73.13 | 63.60 | 54.87 | 40.17 | 31.10 | 53.83 | ||||||||||||
2007 | 32.58 | 34.89 | 46.00 | 48.50 | 60.45 | 68.33 | 70.42 | 71.77 | 68.10 | 53.87 | 39.53 | 31.97 | 52.20 | |||||||||||||
2008 | 29.55 | 34.72 | 41.03 | 48.10 | 61.03 | 72.70 | 69.68 | 68.16 | 58.93 | 48.55 | 35.40 | 28.10 | 49.66 | |||||||||||||
2009 | 26.03 | 33.75 | 41.19 | 48.70 | 60.97 | 68.57 | 71.55 | 70.94 | 60.53 | 49.29 | 36.67 | 27.23 | 49.62 | |||||||||||||
2010 | 26.40 | a | 32.07 | 37.55 | 49.93 | 57.39 | 71.43 | 70.39 | 70.71 | 63.63 | 50.03 | 34.20 | 29.23 | 49.41 | ||||||||||||
2011 | 23.45 | 25.93 | 42.90 | 53.03 | 56.19 | 72.90 | 74.35 | 74.84 | 62.33 | 50.74 | 38.10 | 31.29 | 50.51 | |||||||||||||
2012 | 30.29 | 35.31 | 44.26 | 54.67 | 60.03 | 70.63 | 71.10 | 70.45 | 63.33 | 49.61 | 39.40 | 29.29 | 51.53 | |||||||||||||
2013 | 29.74 | 30.54 | 39.32 | 45.80 | 56.65 | 70.57 | 70.06 | 72.16 | 65.62 | a | 50.93 | a | 39.93 | a | 29.90 | 50.10 | ||||||||||
2014 | 26.97 | 32.05 | i | 39.94 | 50.23 | 57.03 | 71.23 | 73.32 | 72.55 | 66.87 | 53.84 | 36.03 | 36.10 | 53.10 | a | |||||||||||
2015 | 29.55 | 33.86 | 40.90 | 49.40 | 58.77 | 68.43 | 73.77 | 71.74 | 68.30 | 56.10 | 40.67 | f | 33.16 | 53.09 | a | |||||||||||
2016 | 30.93 | a | 32.59 | 43.26 | 49.43 | g | 57.06 | 67.97 | 74.06 | 69.58 | 65.00 | 55.23 | 45.33 | 33.16 | 52.20 | a | ||||||||||
2017 | 32.74 | 37.57 | 46.54 | c | 52.47 | 57.55 | 71.95 | k | 72.04 | f | 68.48 | 63.97 | 50.52 | 40.57 | 29.06 | 47.95 | b | |||||||||
2018 | 23.52 | 33.25 | 45.19 | 47.63 | 64.44 | d | 72.10 | a | 72.35 | 72.23 | 64.10 | 53.84 | 33.67 | 32.71 | 51.25 | |||||||||||
2019 | 29.87 | 35.39 | 41.16 | 49.97 | 59.55 | 65.57 | 71.61 | 74.77 | 69.57 | 47.87 | 37.80 | 33.29 | 51.37 | |||||||||||||
2020 | 32.48 | 33.31 | 48.39 | 50.93 | 61.81 | 68.77 | 75.16 | 73.84 | 59.17 | 48.10 | 42.20 | 26.65 | 51.73 | |||||||||||||
2021 | 30.06 | 27.04 | 41.74 | 48.15 | d | 62.07 | a | 70.30 | c | 70.61 | 71.05 | l | 65.60 | 52.10 | 38.85 | c | 38.32 | 49.53 | a | |||||||
2022 | 25.58 | 24.46 | 36.42 | 51.53 | 62.07 | a | 71.40 | 75.58 | 72.13 | 64.10 | 51.03 | 37.17 | a | 35.61 | 50.59 | |||||||||||
2023 | 33.32 | 33.46 | 42.26 | 47.70 | 61.29 | 72.30 | c | 76.38 | o | 75.06 | 69.17 | 55.94 | 43.23 | 35.87 | 51.78 | a | ||||||||||
2024 | 30.94 | 38.72 | 45.89 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.52 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.10 | 33.10 | 40.76 | 49.56 | 59.18 | 68.19 | 70.99 | 69.74 | 62.97 | 51.07 | 37.75 | 30.34 | 50.12 | |||||||||||||
S.D. | 3.50 | 3.38 | 3.24 | 2.92 | 2.42 | 2.56 | 2.07 | 2.38 | 2.77 | 3.21 | 3.43 | 3.26 | 1.59 | |||||||||||||
SKEW | 0.26 | 0.25 | 0.29 | 0.63 | -0.04 | 0.12 | -0.06 | 0.37 | 0.20 | -0.14 | -0.14 | 0.00 | 0.43 | |||||||||||||
MAX | 39.03 | 44.79 | 50.32 | 58.53 | 64.44 | 73.47 | 75.58 | 75.71 | 69.57 | 57.48 | 45.33 | 38.32 | 54.17 | |||||||||||||
MIN | 23.26 | 24.46 | 33.84 | 43.67 | 53.65 | 63.13 | 66.97 | 65.39 | 56.93 | 43.35 | 28.03 | 22.10 | 46.73 | |||||||||||||
YRS | 78 | 78 | 79 | 76 | 78 | 78 | 76 | 77 | 77 | 78 | 77 | 78 | 67 |