YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 27.74 | 29.19 | 36.93 | b | 43.71 | a | 51.37 | 58.30 | 68.42 | 69.29 | 62.37 | 53.10 | 48.87 | 37.81 | 48.92 | |||||||||||
1949 | 36.65 | 35.36 | 37.71 | 46.15 | 52.84 | 65.10 | 71.02 | 70.06 | 62.65 | 55.77 | 45.10 | 38.35 | 51.40 | |||||||||||||
1950 | 38.92 | 31.52 | 33.52 | 42.03 | 50.48 | 61.27 | 67.73 | 66.92 | 59.82 | 54.34 | 48.18 | 37.05 | 49.31 | |||||||||||||
1951 | 35.73 | 35.23 | 38.61 | 47.07 | 54.13 | 60.67 | 69.35 | 68.11 | 64.67 | 55.52 | 44.60 | 37.71 | 50.95 | |||||||||||||
1952 | 34.73 | 33.38 | 36.11 | 46.43 | 53.85 | 63.28 | 71.60 | 69.26 | 62.20 | 53.45 | 45.68 | 37.10 | 50.59 | |||||||||||||
1953 | 36.39 | 35.54 | 37.87 | 45.75 | 53.58 | 62.75 | 67.71 | 66.06 | 63.67 | 55.06 | 47.85 | 41.27 | 51.13 | |||||||||||||
1954 | 31.81 | 35.18 | 37.37 | 44.77 | 51.97 | 61.05 | 67.00 | 66.79 | 60.90 | 56.61 | 45.80 | 36.69 | 49.66 | |||||||||||||
1955 | 30.00 | 32.50 | 36.89 | 43.68 | 53.16 | 59.68 | 68.76 | 69.50 | 61.17 | 55.08 | 43.65 | 28.34 | b | 48.53 | ||||||||||||
1956 | 32.82 | 33.62 | 34.77 | 42.38 | 48.63 | 60.77 | 66.24 | 66.74 | 60.80 | 53.32 | 46.07 | 39.84 | 48.83 | |||||||||||||
1957 | 27.18 | 34.04 | 37.74 | 45.33 | 52.95 | 64.32 | 68.76 | 66.55 | 64.05 | 53.45 | 47.17 | 40.60 | 50.18 | |||||||||||||
1958 | 34.03 | 26.66 | 37.10 | 44.82 | 50.97 | 57.95 | 66.53 | 67.31 | 61.48 | 52.00 | 46.60 | 29.94 | 47.95 | |||||||||||||
1959 | 29.90 | 29.11 | 35.84 | 44.00 | 54.00 | 59.87 | 66.58 | 67.89 | 64.52 | 54.81 | 46.13 | 38.08 | 49.23 | |||||||||||||
1960 | 32.98 | 35.43 | 31.73 | 44.10 | 53.45 | 61.48 | 67.11 | 66.37 | 61.98 | 53.34 | 47.42 | 31.79 | 48.93 | |||||||||||||
1961 | 27.55 | 31.04 | 36.50 | 42.95 | 50.65 | 60.22 | 66.45 | 67.85 | 65.62 | 55.97 | 45.35 | 36.24 | 48.86 | |||||||||||||
1962 | 31.94 | 30.95 | 36.87 | 45.48 | 52.35 | 61.85 | 65.90 | 65.97 | 61.42 | 53.53 | 43.38 | 33.48 | 48.59 | |||||||||||||
1963 | 31.81 | 28.45 | 37.76 | 44.33 | 52.65 | 63.30 | 67.81 | 67.66 | 59.25 | 55.74 | 48.72 | 30.77 | 49.02 | |||||||||||||
1964 | 33.39 | 30.60 | 36.56 | 42.67 | 54.06 | 62.70 | 67.26 | 65.65 | 60.88 | 53.34 | 45.13 | 37.84 | 49.17 | |||||||||||||
1965 | 29.03 | 29.68 | 35.45 | 41.12 | 52.98 | 60.38 | 67.37 | 68.63 | 59.50 | 50.79 | 41.97 | 35.39 | 47.69 | |||||||||||||
1966 | 29.63 | 30.48 | 36.42 | 40.62 | 49.48 | 60.57 | 67.35 | 67.61 | 59.22 | 51.26 | 45.85 | 36.10 | 47.88 | |||||||||||||
1967 | 35.18 | 28.96 | 32.47 | 40.75 | 47.47 | 58.68 | 66.21 | 65.66 | 60.55 | 54.42 | 42.57 | 37.71 | 47.55 | |||||||||||||
1968 | 28.84 | 27.45 | 38.31 | 45.20 | 53.00 | 60.47 | 67.71 | 66.90 | 62.77 | 56.95 | 45.13 | 33.58 | 48.86 | |||||||||||||
1969 | 32.79 | 34.38 | 37.42 | 46.25 | 53.68 | 63.80 | 67.66 | 69.21 | 63.20 | 53.23 | 46.08 | 36.08 | 50.31 | |||||||||||||
1970 | 24.79 | 32.69 | a | 36.85 | 44.88 | 54.45 | 62.67 | 69.16 | 69.58 | 63.62 | 54.88 | a | 47.23 | d | 35.60 | 49.70 | ||||||||||
1971 | 28.32 | 32.43 | 36.21 | 42.30 | 52.68 | 61.77 | 70.56 | 69.26 | 69.50 | 62.52 | 47.13 | 38.85 | 50.96 | |||||||||||||
1972 | 33.69 | 29.74 | 34.76 | 40.62 | 50.74 | 59.43 | 65.60 | 66.05 | 62.17 | 49.13 | 42.10 | 38.37 | 47.70 | |||||||||||||
1973 | 29.66 | 29.45 | 39.68 | 44.67 | 51.27 | 62.80 | 67.05 | 68.77 | 60.47 | 53.16 | 42.70 | 37.11 | 48.90 | |||||||||||||
1974 | 32.23 | 28.59 | 36.77 | 45.45 | 50.48 | h | 58.03 | 68.55 | 71.43 | d | 64.40 | 50.56 | 44.68 | 37.47 | 48.92 | a | ||||||||||
1975 | 36.75 | c | 33.15 | b | 34.44 | e | 41.66 | a | 54.06 | 61.10 | 71.97 | 71.89 | 64.57 | 57.32 | 50.70 | 37.32 | 51.24 | |||||||||
1976 | 30.19 | 36.04 | a | 37.86 | b | 46.50 | b | 54.47 | 62.55 | 68.08 | 67.82 | 62.50 | 52.29 | 40.50 | 31.06 | 49.16 | ||||||||||
1977 | 24.58 | 30.38 | 41.66 | 46.57 | b | 54.10 | a | 61.40 | 69.10 | 70.45 | 63.52 | b | 53.69 | 46.82 | 34.79 | 49.75 | ||||||||||
1978 | 29.69 | 25.89 | 33.98 | 43.32 | 53.10 | 66.00 | 68.68 | 72.26 | 60.75 | l | 54.94 | 47.60 | a | 39.10 | a | 48.60 | a | |||||||||
1979 | 35.52 | 24.41 | 39.44 | 44.80 | 57.08 | f | 62.60 | j | 70.63 | 68.44 | 62.57 | 53.63 | 49.13 | 39.42 | 48.80 | b | ||||||||||
1980 | 32.45 | 28.55 | 36.23 | 46.60 | 54.39 | 62.34 | a | 69.98 | 70.85 | 64.00 | 52.84 | 42.68 | 32.40 | 49.44 | ||||||||||||
1981 | 22.60 | 36.23 | 35.37 | 46.45 | 52.76 | 63.23 | 69.35 | 67.79 | 62.68 | 50.73 | 44.88 | 35.31 | 48.95 | |||||||||||||
1982 | 25.47 | 31.27 | 37.34 | 41.62 | 52.53 | 58.42 | 67.03 | 65.56 | 61.20 | ----- | z | ----- | z | ----- | z | 48.94 | c | |||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | 37.81 | 37.02 | 39.24 | 46.12 | 54.32 | 60.98 | 67.60 | a | 68.10 | 63.82 | 53.94 | 45.07 | c | 39.53 | 51.13 | |||||||||||
1999 | 33.16 | 34.61 | 38.19 | 45.42 | 55.15 | 63.93 | 71.15 | a | 68.81 | 66.02 | 54.32 | 47.98 | a | 38.73 | 51.46 | |||||||||||
2000 | 30.15 | 34.74 | 41.21 | 45.93 | 53.42 | 61.36 | a | 66.19 | 67.15 | 62.20 | 53.82 | 44.12 | 32.60 | 49.41 | ||||||||||||
2001 | 32.32 | 33.12 | 36.87 | 44.32 | 54.44 | 65.33 | 66.16 | 70.13 | a | 63.02 | c | 55.32 | 48.54 | e | 46.29 | n | 51.78 | a | ||||||||
2002 | 37.29 | c | 36.07 | 40.23 | 47.25 | 53.23 | 60.57 | 69.40 | 69.17 | e | 65.05 | 53.40 | 45.55 | 35.79 | 51.08 | |||||||||||
2003 | 28.58 | 29.07 | 36.94 | 42.57 | 51.37 | 59.41 | a | 68.82 | 71.05 | 63.83 | 54.41 | b | 46.85 | 37.87 | 49.23 | |||||||||||
2004 | 24.13 | 31.93 | 37.39 | 45.18 | 54.39 | 61.43 | 67.39 | 67.24 | 63.42 | 53.98 | 45.32 | 38.68 | 49.21 | |||||||||||||
2005 | 31.42 | 32.79 | 34.29 | b | 44.87 | 49.48 | 60.48 | 68.00 | 71.11 | 65.95 | 56.32 | 47.72 | a | 35.85 | 49.86 | |||||||||||
2006 | 38.68 | 32.41 | 36.66 | 46.07 | 53.90 | 63.02 | 69.63 | 68.40 | 62.03 | 54.55 | 49.75 | 42.48 | 51.47 | |||||||||||||
2007 | 35.66 | 28.62 | 36.90 | 42.75 | 53.95 | a | 61.95 | 68.82 | 68.18 | 64.40 | 57.73 | 44.70 | 36.05 | 49.98 | ||||||||||||
2008 | 34.15 | 34.03 | 37.95 | 45.55 | a | 52.13 | 63.75 | 70.52 | 67.55 | 63.82 | 52.60 | 44.23 | 39.45 | 50.48 | ||||||||||||
2009 | 29.05 | 33.55 | 37.26 | 46.40 | 53.73 | 59.27 | 66.37 | 69.56 | 61.78 | 53.02 | 50.08 | 35.09 | b | 49.60 | ||||||||||||
2010 | 30.95 | 33.16 | 42.19 | 47.80 | 56.26 | 64.85 | 72.23 | 69.10 | 65.43 | 55.58 | 45.40 | 34.50 | 51.45 | |||||||||||||
2011 | 30.40 | 32.09 | 37.63 | 47.07 | 54.97 | 62.45 | 69.83 | a | 69.65 | 65.05 | 57.15 | 49.47 | 42.13 | 51.49 | ||||||||||||
2012 | 38.16 | 37.62 | a | 43.42 | 48.52 | 56.64 | b | 62.26 | a | 71.21 | 71.34 | 63.95 | 57.52 | 45.18 | 41.03 | a | 53.07 | |||||||||
2013 | 32.88 | b | 34.29 | 38.97 | 45.97 | 55.50 | 63.05 | 72.31 | 67.76 | 62.18 | 55.79 | 44.70 | 37.63 | 50.92 | ||||||||||||
2014 | 30.82 | 31.46 | 33.81 | 45.07 | 54.81 | 62.75 | b | 68.87 | 66.39 | 63.52 | 57.55 | 46.37 | 42.40 | 50.32 | ||||||||||||
2015 | 32.47 | a | 25.50 | 33.39 | 45.52 | 56.73 | 62.68 | 70.21 | 73.08 | 65.69 | n | 55.68 | 50.67 | 49.19 | 50.46 | a | ||||||||||
2016 | 36.94 | 36.74 | 42.95 | 46.57 | 55.97 | a | 63.00 | 69.97 | 71.29 | 65.58 | 56.37 | 47.55 | 38.45 | 52.61 | ||||||||||||
2017 | 38.39 | 37.30 | 34.79 | 48.28 | 53.55 | a | 62.20 | 68.37 | 67.66 | 64.87 | 60.02 | 46.68 | 34.44 | 51.38 | ||||||||||||
2018 | 31.52 | 38.18 | 37.65 | 43.62 | 55.15 | 60.77 | 68.13 | 72.69 | 65.87 | 54.85 | 45.08 | 36.89 | 50.87 | |||||||||||||
2019 | 32.02 | 33.04 | 36.39 | 46.77 | 52.61 | 62.70 | c | 70.47 | 69.69 | 63.22 | 56.17 | a | 44.93 | 38.69 | 50.56 | |||||||||||
2020 | 37.15 | 38.14 | 41.43 | a | 44.30 | 53.27 | 63.87 | 70.50 | 72.08 | 65.17 | c | ----- | z | 52.40 | d | 41.52 | 52.71 | a | ||||||||
2021 | 34.13 | 33.54 | a | ----- | z | 48.09 | g | 55.60 | 66.97 | a | 71.60 | a | 74.52 | 69.96 | b | 62.24 | 48.22 | 44.47 | 56.12 | b | ||||||
2022 | 34.32 | a | 37.77 | 42.26 | 49.33 | 56.60 | 64.78 | 73.65 | 74.39 | 67.55 | 59.97 | a | 52.47 | 40.38 | e | 54.45 | ||||||||||
2023 | 41.21 | b | 35.71 | 40.23 | 49.27 | 54.45 | a | 61.57 | 71.10 | 68.58 | a | 65.14 | a | 57.71 | 44.38 | 42.55 | 52.66 | |||||||||
2024 | 35.23 | 35.47 | 42.21 | 46.10 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.63 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.32 | 32.51 | 37.39 | 44.93 | 53.29 | 61.89 | 68.77 | 68.87 | 63.33 | 54.86 | 46.28 | 37.37 | 50.04 | |||||||||||||
S.D. | 3.99 | 3.33 | 2.56 | 2.09 | 1.93 | 1.98 | 1.89 | 2.16 | 2.22 | 2.57 | 2.48 | 3.65 | 1.45 | |||||||||||||
SKEW | -0.20 | -0.33 | 0.36 | -0.22 | -0.70 | 0.11 | 0.39 | 0.65 | 0.55 | 0.72 | 0.31 | 0.18 | 0.59 | |||||||||||||
MAX | 41.21 | 38.18 | 43.42 | 49.33 | 56.73 | 66.97 | 73.65 | 74.52 | 69.96 | 62.52 | 52.47 | 49.19 | 54.45 | |||||||||||||
MIN | 22.60 | 24.41 | 31.73 | 40.62 | 47.47 | 57.95 | 65.60 | 65.56 | 59.22 | 49.13 | 40.50 | 28.34 | 47.55 | |||||||||||||
YRS | 62 | 62 | 61 | 60 | 59 | 60 | 61 | 61 | 59 | 59 | 60 | 59 | 53 |