YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 26.34 | 26.59 | 31.37 | 51.55 | 58.68 | 66.42 | 72.68 | 72.82 | 66.77 | 51.31 | 36.37 | 29.65 | 49.21 | |||||||||||||
1949 | 16.31 | 30.62 | 39.48 | 49.20 | 56.95 | 65.03 | 72.35 | 71.37 | 63.22 | 49.52 | 48.63 | 32.47 | 49.60 | |||||||||||||
1950 | 29.37 | 38.61 | 38.10 | 47.63 | 52.97 | 66.58 | 68.89 | 68.85 | 60.52 | 59.92 | 39.13 | 36.27 | 50.57 | |||||||||||||
1951 | 26.85 | 33.89 | 35.79 | 43.80 | 57.21 | 60.85 | 73.42 | 70.66 | 61.42 | 48.21 | 38.12 | 28.95 | 48.26 | |||||||||||||
1952 | 34.84 | 34.95 | 33.74 | 48.18 | 56.74 | 72.03 | 73.08 | 72.23 | 65.57 | 53.31 | 32.33 | 32.52 | 50.79 | |||||||||||||
1953 | 39.60 | 32.71 | 43.55 | 42.77 | 53.44 | 69.65 | 74.00 | 71.19 | 66.00 | 54.35 | 43.08 | 31.40 | 51.81 | |||||||||||||
1954 | 36.27 | 43.73 | 35.31 | 53.55 | 57.15 | 69.30 | 76.74 | 72.66 | 65.70 | 52.53 | 44.27 | 34.63 | 53.49 | |||||||||||||
1955 | 27.23 | 27.11 | 36.45 | 50.12 | 58.97 | 63.93 | 75.50 | 73.03 | 63.83 | 53.92 | 36.13 | 35.39 | 50.13 | |||||||||||||
1956 | 33.97 | 27.71 | 40.03 | 45.47 | 60.85 | 73.38 | 72.21 | 69.71 | 65.50 | 55.87 | 37.12 | 35.69 | 51.46 | |||||||||||||
1957 | 25.77 | 40.70 | 39.03 | 41.37 | 53.90 | 65.82 | 73.52 | 72.60 | 61.35 | 51.44 | 36.82 | 39.55 | 50.15 | |||||||||||||
1958 | 32.90 | 37.38 | 32.76 | 44.52 | 61.71 | 68.08 | 70.31 | 73.55 | 64.37 | 53.87 | 40.58 | 35.79 | 51.32 | |||||||||||||
1959 | 29.98 | 30.20 | 37.63 | 45.63 | 56.21 | 70.87 | 72.56 | 73.02 | 61.07 | 48.08 | 37.58 | 36.50 | 49.94 | |||||||||||||
1960 | 27.58 | 24.79 | 38.06 | 50.48 | 57.16 | 68.33 | 73.13 | 73.40 | 65.02 | 51.97 | 39.42 | 26.50 | 49.65 | |||||||||||||
1961 | 31.68 | 35.20 | 38.85 | 46.02 | 55.69 | 66.12 | 71.47 | 72.13 | 56.27 | 49.98 | 34.67 | 27.68 | 48.81 | |||||||||||||
1962 | 19.45 | 29.82 | 34.61 | 50.30 | 59.74 | 65.53 | 72.85 | 72.47 | 62.43 | 53.42 | 41.28 | 33.74 | 49.64 | |||||||||||||
1963 | 19.11 | 37.30 | 37.31 | 50.02 | 60.85 | 66.70 | 74.79 | 68.73 | 65.87 | 57.87 | 41.72 | 28.52 | 50.73 | |||||||||||||
1964 | 30.56 | 27.34 | 33.00 | 46.60 | 58.79 | 64.97 | 75.74 | 70.40 | 62.52 | 52.63 | 39.97 | 33.16 | 49.64 | |||||||||||||
1965 | 35.02 | 27.39 | 28.95 | 51.18 | 57.10 | 63.88 | 72.66 | 70.19 | 55.63 | 55.08 | 43.28 | 34.98 | 49.61 | |||||||||||||
1966 | 28.53 | 28.41 | 42.45 | 44.62 | 58.66 | 64.60 | 76.87 | 70.82 | 64.98 | 52.16 | 41.45 | 31.84 | 50.45 | |||||||||||||
1967 | 33.94 | 35.09 | 42.90 | 48.17 | 52.58 | 60.60 | 69.06 | 68.21 | 62.10 | 52.48 | 40.45 | 26.48 | 49.34 | |||||||||||||
1968 | 29.71 | 34.22 | 40.60 | 42.93 | 53.87 | 67.75 | 71.68 | 68.11 | 60.83 | 51.87 | 35.70 | 28.90 | 48.85 | |||||||||||||
1969 | 34.92 | 35.34 | 32.15 | 52.20 | 59.31 | 61.45 | 74.68 | 73.90 | 64.42 | 38.94 | 39.05 | 32.52 | 49.90 | |||||||||||||
1970 | 30.56 | 38.54 | 33.48 | 43.67 | 58.77 | 65.22 | 71.94 | 73.84 | 59.50 | 45.87 | 39.05 | 33.29 | 49.48 | |||||||||||||
1971 | 32.03 | 30.55 | 38.45 | 47.78 | 54.13 | 68.97 | 70.56 | 72.74 | 57.45 | 49.39 | 39.08 | 31.85 | 49.42 | |||||||||||||
1972 | 30.45 | 36.14 | 44.73 | 48.53 | 57.00 | 68.25 | 70.21 | 70.97 | 62.08 | 52.03 | 32.83 | 24.87 | 49.84 | |||||||||||||
1973 | 27.29 | 35.45 | 39.85 | 43.22 | 55.56 | 67.52 | 70.95 | 73.44 | 59.92 | 54.50 | 39.52 | 31.53 | 49.90 | |||||||||||||
1974 | 23.68 | 35.14 | 43.13 | 47.85 | 61.60 | 68.40 | 74.65 | 69.45 | 59.38 | 52.44 | 37.95 | 31.18 | 50.40 | |||||||||||||
1975 | 31.65 | 30.59 | 37.23 | 44.10 | 54.24 | 64.23 | 72.71 | 70.74 | 59.52 | 53.21 | 36.78 | 37.50 | 49.37 | |||||||||||||
1976 | 32.31 | 39.26 | 37.06 | 49.13 | 56.65 | 66.33 | 75.23 | 70.23 | 61.75 | 48.35 | 39.52 | 35.42 | 50.94 | |||||||||||||
1977 | 29.16 | 37.93 | 39.89 | 51.03 | 60.68 | 71.87 | 74.29 | 70.19 | 66.55 | 53.24 | 40.28 | 35.05 | 52.51 | |||||||||||||
1978 | 25.81 | 31.32 | 43.29 | 50.25 | 54.37 | 66.88 | 74.66 | 69.65 | 64.97 | 53.02 | 37.75 | 24.63 | 49.72 | |||||||||||||
1979 | 18.02 | 34.21 | 40.52 | 49.07 | 54.77 | 65.80 | 73.66 | 69.45 | 66.25 | 53.77 | 33.30 | 34.47 | 49.44 | |||||||||||||
1980 | 25.92 | 34.50 | 38.02 | 47.68 | 57.13 | 71.93 | 76.35 | 73.13 | 65.78 | 52.39 | 41.90 | 41.18 | 52.16 | |||||||||||||
1981 | 37.29 | 36.12 | 41.21 | 56.35 | 57.03 | 70.35 | 75.87 | 71.98 | 68.15 | 52.61 | 45.85 | 35.76 | 54.05 | |||||||||||||
1982 | 30.24 | 32.00 | 41.11 | 47.37 | 55.05 | 63.13 | 72.61 | 73.10 | 61.67 | 48.97 | 35.63 | 30.89 | 49.31 | |||||||||||||
1983 | 31.87 | 36.55 | 36.16 | 41.00 | 51.42 | 62.80 | 73.23 | 74.44 | 64.90 | 52.73 | 36.95 | 17.42 | 48.29 | |||||||||||||
1984 | 27.23 | 34.07 | 37.15 | 42.27 | 59.92 | 66.52 | 74.87 | 71.79 | 60.67 | 44.74 | 39.68 | 32.84 | 49.31 | |||||||||||||
1985 | 25.52 | 27.64 | 40.81 | 50.97 | 59.94 | 67.95 | 72.97 | 72.34 | 58.82 | 50.69 | 29.73 | 29.44 | 48.90 | |||||||||||||
1986 | 40.31 | 36.11 | 47.06 | 49.55 | 56.71 | 70.27 | 73.47 | 72.15 | 60.63 | 49.29 | 38.95 | 30.98 | 52.12 | |||||||||||||
1987 | 32.13 | 36.09 | 38.84 | 51.83 | 59.65 | 69.15 | 74.35 | 70.66 | 62.35 | 51.63 | 39.92 | 28.40 | 51.25 | |||||||||||||
1988 | 25.15 | 34.09 | 38.53 | 50.23 | 58.97 | 71.83 | 74.13 | 73.61 | 62.28 | 54.02 | 40.60 | 31.08 | 51.21 | |||||||||||||
1989 | 33.48 | 22.34 | 43.27 | 51.03 | 59.03 | 65.40 | 75.84 | 71.65 | 62.43 | 51.24 | 42.80 | 27.29 | 50.48 | |||||||||||||
1990 | 36.37 | 33.27 | 39.48 | 49.08 | 56.52 | 72.58 | 70.77 | 71.26 | 66.90 | 52.23 | 44.00 | 25.73 | 51.52 | |||||||||||||
1991 | 27.81 | 40.34 | 42.77 | 47.75 | 60.24 | 69.38 | 73.08 | 71.44 | 62.48 | 50.31 | 34.70 | 33.10 | 51.12 | |||||||||||||
1992 | 31.76 | 40.09 | 43.00 | 54.80 | 60.56 | 66.07 | 70.50 | 68.39 | 65.20 | 53.65 | 33.88 | 25.42 | 51.11 | |||||||||||||
1993 | 27.31 | 29.38 | 42.52 | 48.47 | 58.82 | 66.43 | 73.00 | 70.00 | 60.63 | 49.13 | 34.72 | 34.13 | 49.54 | |||||||||||||
1994 | 34.26 | 33.38 | 44.79 | 48.80 | 63.23 | 73.48 | 73.85 | 74.97 | 67.15 | 51.98 | 37.92 | 35.95 | 53.31 | |||||||||||||
1995 | 33.85 | 38.48 | 39.27 | 42.88 | 50.00 | 63.05 | 71.55 | 75.34 | 61.52 | a | 49.74 | 43.24 | a | 33.18 | 50.18 | |||||||||||
1996 | 27.63 | 35.31 | 36.98 | a | 50.02 | 59.84 | 68.88 | 73.73 | 71.79 | 61.10 | 51.52 | 38.68 | 34.56 | 50.84 | ||||||||||||
1997 | 28.68 | 31.32 | 43.69 | 42.37 | 57.74 | 68.63 | 73.63 | 70.03 | 64.67 | 50.81 | 35.97 | 30.37 | 49.83 | |||||||||||||
1998 | 34.29 | 35.43 | 38.29 | 46.03 | 60.45 | 63.77 | 74.24 | 71.31 | 67.83 | 50.73 | 43.05 | 30.23 | 51.30 | |||||||||||||
1999 | 35.50 | 40.16 | 44.66 | 43.95 | 55.81 | 65.55 | 75.07 | a | 71.15 | 59.47 | 51.71 | 46.90 | a | 35.37 | 52.11 | |||||||||||
2000 | 34.42 | 38.71 | a | 41.89 | 50.78 | 60.69 | 68.52 | 76.89 | 74.79 | 62.38 | a | 51.03 | 30.48 | 28.97 | 51.63 | |||||||||||
2001 | 31.21 | 28.41 | 40.13 | 49.38 | 57.44 | 69.40 | 76.50 | 73.02 | a | 65.37 | 51.37 | 43.10 | 33.63 | 51.58 | ||||||||||||
2002 | 31.48 | 33.45 | 35.77 | a | 51.23 | 56.83 | a | 72.57 | a | 77.32 | 72.31 | b | 64.12 | a | 45.42 | a | 37.45 | 33.97 | 50.99 | |||||||
2003 | 37.44 | 28.28 | a | 40.19 | 51.70 | 57.27 | a | 63.82 | 77.82 | a | 75.00 | c | 58.46 | g | 56.37 | 35.98 | 33.53 | 50.67 | a | |||||||
2004 | 32.13 | 31.52 | 46.13 | 48.17 | a | 58.85 | 63.75 | 70.77 | 67.24 | 62.25 | 50.71 | 37.98 | 34.61 | 50.34 | ||||||||||||
2005 | 33.06 | 35.96 | 40.00 | 46.35 | 56.65 | 65.82 | 76.19 | 70.27 | 65.22 | 51.68 | 43.02 | 30.06 | 51.19 | |||||||||||||
2006 | 38.23 | 30.45 | 38.47 | 51.42 | 60.63 | a | 71.67 | 74.75 | a | 71.16 | 57.92 | 49.37 | 41.27 | 32.05 | 51.45 | |||||||||||
2007 | 21.84 | 30.64 | 45.18 | 46.10 | 58.11 | 67.55 | 75.40 | 73.81 | 64.00 | 53.24 | 41.55 | 26.55 | 50.33 | |||||||||||||
2008 | 27.15 | 33.36 | 39.68 | 45.08 | 55.47 | 67.03 | 75.61 | 70.77 | 60.85 | 50.90 | 43.28 | 26.92 | 49.68 | |||||||||||||
2009 | 34.40 | 38.21 | 41.81 | 44.88 | ----- | z | 63.25 | 69.74 | 69.34 | 61.48 | 42.32 | 42.63 | 24.48 | 48.41 | a | |||||||||||
2010 | 30.90 | 27.91 | 39.94 | 47.85 | 53.65 | 68.62 | 72.94 | 73.27 | 66.13 | 54.44 | 38.75 | 34.94 | 50.78 | |||||||||||||
2011 | 29.39 | 27.75 | 42.35 | 48.07 | 51.53 | 67.22 | 75.08 | a | 75.15 | 62.13 | 51.40 | 39.87 | 25.98 | 49.66 | ||||||||||||
2012 | 35.76 | 28.34 | 48.24 | 52.78 | 60.13 | 73.65 | 77.77 | 73.81 | 65.47 | 48.79 | 43.27 | 32.37 | 53.37 | |||||||||||||
2013 | 29.65 | 30.43 | 36.95 | 41.85 | 57.42 | 70.30 | 73.47 | a | 73.06 | 66.40 | 47.34 | 40.57 | 28.79 | 49.69 | ||||||||||||
2014 | 31.53 | 28.50 | 41.05 | 48.78 | 57.79 | c | 66.08 | 73.10 | 69.76 | 64.43 | 54.27 | 35.93 | 31.63 | 50.24 | ||||||||||||
2015 | 33.41 | b | 33.80 | 43.45 | 48.37 | 52.11 | 68.83 | 71.73 | 72.48 | 68.27 | 56.68 | 39.92 | 30.76 | 51.65 | ||||||||||||
2016 | 32.42 | 38.52 | 42.23 | 47.75 | 53.69 | 71.77 | 76.61 | 71.97 | 66.20 | 57.68 | 46.45 | 28.45 | 52.81 | |||||||||||||
2017 | 29.47 | 41.12 | 47.40 | 49.20 | 55.40 | 70.67 | 76.21 | 71.61 | 65.28 | 50.27 | 45.22 | 33.89 | 52.98 | |||||||||||||
2018 | 33.66 | 28.70 | 42.97 | 47.50 | 61.27 | 73.40 | 75.13 | 71.56 | 67.17 | 49.23 | 38.63 | 33.03 | 51.85 | |||||||||||||
2019 | 31.74 | 27.54 | 35.55 | 49.82 | 51.11 | 65.70 | 75.97 | 75.11 | 69.17 | 44.60 | 37.32 | 34.24 | 49.82 | |||||||||||||
2020 | 34.90 | 29.10 | 42.95 | 45.98 | 59.84 | 70.80 | 75.82 | 76.16 | 63.80 | 49.60 | 44.12 | 34.69 | 52.31 | |||||||||||||
2021 | 33.29 | 26.09 | 40.02 | 46.27 | 55.48 | 71.93 | 76.42 | 74.74 | 67.32 | 53.45 | 46.72 | 38.74 | 52.54 | |||||||||||||
2022 | 32.83 | a | 29.86 | 39.63 | 48.07 | 56.84 | 69.23 | 76.52 | 74.55 | 67.43 | 56.30 | i | 34.20 | c | 30.95 | 50.92 | a | |||||||||
2023 | 28.21 | 31.32 | 36.40 | 47.58 | 58.62 | a | 63.75 | 72.82 | 73.29 | 65.68 | 51.66 | 41.28 | 35.53 | 50.51 | ||||||||||||
2024 | 26.90 | 37.12 | 40.87 | 47.38 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.96 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.56 | 33.12 | 39.70 | 47.87 | 57.22 | 67.60 | 73.83 | 71.91 | 63.41 | 51.42 | 39.44 | 31.78 | 50.65 | |||||||||||||
S.D. | 4.72 | 4.50 | 3.83 | 3.24 | 2.86 | 3.22 | 2.13 | 1.95 | 2.98 | 3.36 | 3.86 | 4.01 | 1.29 | |||||||||||||
SKEW | -0.70 | 0.03 | -0.26 | -0.09 | -0.40 | 0.01 | -0.24 | -0.10 | -0.37 | -0.79 | -0.07 | -0.60 | 0.54 | |||||||||||||
MAX | 40.31 | 43.73 | 48.24 | 56.35 | 63.23 | 73.65 | 77.82 | 76.16 | 69.17 | 59.92 | 48.63 | 41.18 | 54.05 | |||||||||||||
MIN | 16.31 | 22.34 | 28.95 | 41.00 | 50.00 | 60.60 | 68.89 | 67.24 | 55.63 | 38.94 | 29.73 | 17.42 | 48.26 | |||||||||||||
YRS | 77 | 77 | 77 | 76 | 75 | 76 | 76 | 76 | 75 | 75 | 76 | 76 | 73 |