YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 34.60 | 31.34 | 34.24 | 38.32 | 48.03 | 60.57 | 64.15 | 61.42 | 55.43 | 48.40 | 35.43 | 22.45 | b | 44.53 | ||||||||||||
1949 | 14.71 | 28.27 | 37.77 | 48.30 | 53.81 | 60.33 | 66.29 | 63.37 | 59.40 | 45.16 | 43.20 | 27.56 | 45.68 | |||||||||||||
1950 | 22.38 | a | 34.52 | 36.82 | 43.18 | 51.27 | 58.03 | 68.15 | 67.65 | 58.43 | 48.66 | 42.07 | 37.82 | 47.42 | ||||||||||||
1951 | 30.15 | 34.80 | 35.61 | 49.58 | 51.71 | 62.15 | 67.48 | 65.19 | 61.37 | 45.81 | 38.27 | 24.63 | 47.23 | |||||||||||||
1952 | 25.37 | 30.97 | 34.05 | 47.40 | 52.98 | 55.28 | 68.89 | 64.77 | 62.98 | 54.39 | 35.15 | 26.56 | 46.57 | |||||||||||||
1953 | 35.71 | 35.75 | 37.87 | 42.48 | 45.00 | 52.25 | 66.92 | 62.06 | 61.73 | 46.92 | 41.02 | 32.68 | 46.70 | |||||||||||||
1954 | 30.16 | 36.86 | 35.94 | 45.85 | 54.19 | 53.73 | 66.02 | 59.24 | 54.18 | 45.77 | 40.30 | 30.10 | 46.03 | |||||||||||||
1955 | 23.67 | a | 29.89 | 36.32 | 37.83 | 49.26 | 59.85 | 61.47 | 67.00 | 57.93 | 49.19 | 33.67 | 31.23 | 44.78 | ||||||||||||
1956 | 30.42 | 26.26 | 36.81 | 46.33 | 53.21 | 56.68 | 68.29 | 62.61 | 57.77 | 44.60 | 37.65 | 30.48 | 45.93 | |||||||||||||
1957 | 22.48 | 34.16 | 39.45 | 44.97 | 52.31 | 60.77 | 64.16 | 61.29 | 60.85 | 45.34 | 34.90 | 33.60 | 46.19 | |||||||||||||
1958 | 32.03 | 39.86 | 35.53 | 42.70 | 57.03 | 59.13 | 68.27 | 68.97 | 57.00 | 52.19 | 38.60 | 37.19 | 49.04 | |||||||||||||
1959 | 34.40 | 33.24 | a | 39.24 | 47.88 | 47.92 | 60.20 | 70.45 | 64.42 | 55.27 | 50.53 | 38.85 | 28.56 | 47.58 | ||||||||||||
1960 | 29.65 | 33.81 | 42.23 | 43.33 | 47.31 | 62.08 | 69.76 | 62.18 | 59.90 | 47.40 | 36.23 | 32.84 | 47.23 | |||||||||||||
1961 | 34.45 | 35.96 | 37.26 | 43.78 | 47.68 | 62.53 | 66.50 | 67.02 | 53.73 | 47.31 | 33.88 | 29.24 | 46.61 | |||||||||||||
1962 | 19.71 | 30.23 | 36.13 | 46.78 | 48.03 | 59.60 | 63.63 | 61.79 | 59.77 | 46.97 | 38.88 | 33.58 | 45.43 | |||||||||||||
1963 | 27.68 | 40.45 | 36.82 | 37.78 | 53.23 | 56.98 | 61.71 | 63.60 | 61.67 | 48.69 | 37.28 | 32.63 | 46.54 | |||||||||||||
1964 | 26.57 | b | 26.16 | 35.55 | 40.68 | 48.50 | 55.83 | 65.68 | 62.08 | 54.07 | 50.95 | 35.45 | 32.97 | 44.54 | ||||||||||||
1965 | 30.23 | 35.66 | 39.66 | 44.67 | 49.16 | 58.73 | 65.81 | 62.68 | 54.00 | 50.69 | 38.23 | 27.13 | 46.39 | |||||||||||||
1966 | 30.47 | 32.30 | 39.29 | 45.58 | 54.42 | 55.73 | 61.31 | 64.68 | 59.08 | 47.81 | 38.43 | 32.60 | 46.81 | |||||||||||||
1967 | 30.97 | 36.73 | 34.89 | 35.83 | 50.73 | 58.77 | 67.77 | 69.68 | 61.65 | 46.69 | 38.90 | 21.19 | 46.15 | |||||||||||||
1968 | 27.52 | 40.34 | 40.37 | 41.72 | 50.15 | 59.10 | 69.24 | 61.61 | 57.02 | 46.53 | 35.05 | 26.06 | 46.23 | |||||||||||||
1969 | 26.23 | 30.64 | 38.18 | 42.93 | 57.24 | 60.53 | 67.19 | 64.89 | 58.67 | 43.61 | 38.12 | 33.63 | 46.82 | |||||||||||||
1970 | 33.58 | 38.77 | 39.44 | 38.90 | 52.45 | 61.67 | 68.58 | ----- | z | ----- | z | ----- | z | 41.87 | 28.37 | 44.85 | c | |||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | 43.98 | 42.53 | 48.68 | 58.63 | 66.26 | 63.85 | 52.93 | 51.56 | 33.32 | 24.69 | 48.64 | b | ||||||||||
1979 | 26.56 | 33.64 | 40.92 | 42.48 | 53.32 | 59.80 | 65.73 | 63.31 | 60.53 | 51.29 | 34.15 | 33.08 | 47.07 | |||||||||||||
1980 | 32.48 | 38.62 | 36.66 | 45.58 | 50.21 | 54.40 | 66.65 | 62.98 | 57.77 | 49.21 | 38.83 | 32.87 | 47.19 | |||||||||||||
1981 | 35.26 | 35.62 | 39.29 | 45.15 | 50.84 | 59.43 | 65.85 | 67.97 | 58.67 | 44.85 | 40.15 | 35.60 | 48.22 | |||||||||||||
1982 | 24.26 | 32.96 | 36.21 | 39.47 | 51.55 | 59.08 | 63.81 | 64.48 | 54.07 | 45.60 | 34.15 | 29.56 | 44.60 | |||||||||||||
1983 | 33.05 | 36.84 | 39.56 | 40.58 | 52.16 | 56.32 | 60.13 | 64.44 | 56.73 | 48.47 | 36.42 | 29.03 | 46.14 | |||||||||||||
1984 | 29.85 | 34.28 | 40.52 | 41.30 | 50.89 | 56.70 | 68.66 | 65.71 | 56.12 | ----- | z | 34.80 | 23.35 | 45.65 | a | |||||||||||
1985 | 25.39 | 30.29 | 35.24 | 47.88 | 51.02 | 61.93 | 69.87 | 62.63 | 52.27 | 44.97 | 27.65 | 29.05 | 44.85 | |||||||||||||
1986 | 38.08 | 39.05 | 44.03 | 44.10 | 51.71 | 64.73 | 63.00 | 69.26 | 51.90 | 48.45 | 37.98 | 31.27 | 48.63 | |||||||||||||
1987 | 29.34 | 35.45 | 38.39 | 48.85 | 54.40 | a | 62.97 | 61.15 | a | 66.55 | 59.97 | 53.32 | 37.41 | a | 28.97 | 48.06 | ||||||||||
1988 | 23.76 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.76 | k |
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 | 46.94 | 39.42 | 34.55 | 40.30 | i | |||
1997 | 32.32 | 35.43 | 41.03 | 42.43 | 56.27 | 57.97 | 64.40 | 65.44 | 58.15 | 45.82 | 40.56 | e | 29.77 | 47.47 | ||||||||||||
1998 | 34.95 | 34.66 | 38.58 | 42.57 | 45.26 | 56.15 | 69.13 | 68.73 | 61.78 | 46.18 | 36.45 | 25.65 | 46.67 | |||||||||||||
1999 | 31.35 | 30.20 | 36.85 | 42.23 | 49.68 | 57.17 | 64.69 | 64.52 | 60.27 | 50.40 | 41.35 | 31.13 | 46.65 | |||||||||||||
2000 | 32.75 | a | 37.43 | 37.66 | 46.05 | 50.13 | 60.98 | 63.55 | 64.56 | 55.40 | 45.53 | 31.20 | 32.11 | 46.45 | ||||||||||||
2001 | 30.61 | 32.55 | 40.29 | 39.72 | 54.79 | 55.35 | 63.02 | 65.95 | 57.38 | 47.71 | 36.25 | 29.47 | 46.09 | |||||||||||||
2002 | 28.76 | 35.77 | 36.35 | 44.27 | 49.85 | 59.25 | 67.63 | 62.08 | 57.42 | 45.44 | 38.00 | 33.69 | 46.54 | |||||||||||||
2003 | 38.61 | 34.02 | 39.68 | 39.32 | 50.26 | 61.48 | 69.34 | 64.76 | 60.17 | 50.37 | 34.77 | 32.63 | 47.95 | |||||||||||||
2004 | 30.39 | 35.29 | 43.44 | 45.75 | 50.66 | 59.57 | 67.19 | 65.45 | 55.10 | 46.08 | 35.07 | 32.94 | 47.24 | |||||||||||||
2005 | 28.81 | 36.43 | 40.90 | a | 41.88 | 51.31 | 53.97 | 67.97 | 66.10 | 54.27 | 46.05 | 35.53 | 30.74 | 46.16 | ||||||||||||
2006 | 30.98 | 34.14 | 33.29 | 43.92 | 53.34 | 62.12 | 69.34 | 63.66 | 57.45 | 46.13 | 37.13 | 31.21 | 46.89 | |||||||||||||
2007 | 27.71 | 33.73 | 41.87 | 43.80 | 53.11 | 58.15 | 68.50 | 64.60 | 54.92 | 44.34 | 38.20 | 25.97 | 46.24 | |||||||||||||
2008 | 24.31 | 27.45 | 34.84 | 39.63 | 51.32 | 57.17 | 66.65 | 65.37 | 59.50 | 47.65 | 39.53 | a | 26.60 | 45.00 | ||||||||||||
2009 | 32.40 | 35.75 | 36.53 | 42.48 | 54.15 | 58.55 | 68.31 | 64.15 | a | 60.30 | 45.31 | 35.83 | 26.02 | 46.65 | ||||||||||||
2010 | 36.68 | 36.88 | 37.87 | 40.08 | 45.35 | 57.08 | 67.15 | 63.52 | 57.12 | 49.50 | 33.85 | 33.56 | 46.55 | |||||||||||||
2011 | 30.84 | 30.55 | 37.48 | 39.28 | 45.66 | 55.08 | 63.85 | 65.24 | 61.13 | 46.69 | 35.07 | 29.39 | 45.02 | |||||||||||||
2012 | 32.13 | 34.20 | a | 36.69 | 44.82 | 51.55 | 55.15 | 65.44 | 67.11 | 61.02 | 48.23 | 39.10 | 28.31 | 46.98 | ||||||||||||
2013 | 23.38 | b | 32.79 | 40.48 | 44.02 | 52.10 | 60.37 | 70.31 | 64.34 | 56.83 | 43.97 | 38.16 | a | 22.69 | 45.79 | |||||||||||
2014 | 33.13 | 37.48 | 41.71 | 45.13 | 53.06 | 59.23 | 71.50 | 66.50 | 60.70 | 50.55 | 38.97 | 38.68 | f | 50.72 | a | |||||||||||
2015 | 37.03 | 40.71 | 43.98 | 43.30 | 52.44 | 65.97 | 68.24 | 65.84 | 57.45 | 52.37 | 34.30 | 29.42 | 49.25 | |||||||||||||
2016 | 30.37 | 39.21 | 41.37 | 48.13 | 52.85 | 60.72 | 64.98 | 66.42 | 55.90 | 46.00 | 41.25 | 28.71 | 47.99 | |||||||||||||
2017 | 24.02 | 36.25 | 41.98 | 42.32 | 53.29 | 61.37 | 69.34 | 69.26 | 59.07 | 45.95 | 39.30 | 29.90 | 47.67 | |||||||||||||
2018 | 37.19 | 32.29 | 37.11 | 44.58 | 55.48 | 59.35 | 69.11 | 65.82 | c | 55.93 | 46.63 | 37.33 | 31.26 | 47.67 | ||||||||||||
2019 | 34.89 | 28.59 | 37.84 | 46.95 | 51.98 | 59.42 | 65.06 | 66.35 | 55.37 | 42.58 | 37.35 | 34.32 | 46.73 | |||||||||||||
2020 | 33.02 | 35.19 | 37.81 | 45.42 | 53.02 | 58.95 | 66.42 | 67.61 | 61.85 | 49.45 | 36.10 | 31.02 | 47.99 | |||||||||||||
2021 | 33.38 | a | 34.07 | a | 36.56 | 45.08 | 52.48 | 64.98 | 70.95 | 65.90 | 58.03 | 46.19 | 39.05 | 30.10 | 48.07 | |||||||||||
2022 | 33.95 | 34.30 | 40.79 | 40.28 | a | 47.10 | a | 58.27 | 69.97 | 69.60 | 61.05 | 50.79 | 31.10 | 26.58 | 46.98 | |||||||||||
2023 | 30.85 | 32.18 | 32.10 | 43.10 | 54.76 | 59.97 | 69.29 | 67.00 | 55.62 | 48.32 | 38.12 | 36.23 | 47.29 | |||||||||||||
2024 | 36.00 | 36.71 | 38.37 | 42.31 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.03 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.20 | 34.30 | 38.32 | 43.36 | 51.36 | 58.97 | 66.67 | 65.00 | 57.83 | 47.67 | 37.13 | 30.08 | 46.70 | |||||||||||||
S.D. | 4.79 | 3.43 | 2.72 | 3.05 | 2.84 | 2.81 | 2.70 | 2.33 | 2.78 | 2.57 | 2.88 | 3.66 | 1.09 | |||||||||||||
SKEW | -0.69 | -0.34 | 0.20 | -0.17 | -0.33 | 0.02 | -0.49 | 0.07 | -0.19 | 0.52 | -0.54 | -0.29 | -0.03 | |||||||||||||
MAX | 38.61 | 40.71 | 44.03 | 49.58 | 57.24 | 65.97 | 71.50 | 69.68 | 62.98 | 54.39 | 43.20 | 37.82 | 49.25 | |||||||||||||
MIN | 14.71 | 26.16 | 32.10 | 35.83 | 45.00 | 52.25 | 60.13 | 59.24 | 51.90 | 42.58 | 27.65 | 21.19 | 44.53 | |||||||||||||
YRS | 61 | 60 | 61 | 60 | 60 | 60 | 60 | 59 | 59 | 59 | 61 | 60 | 56 |