YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.12 | f | 74.93 | b | 69.69 | 58.60 | 46.76 | 33.27 | 23.34 | 51.10 | f | |||||
1958 | 20.06 | 13.86 | 31.18 | 47.18 | 58.95 | 63.77 | d | 68.81 | 69.87 | 62.22 | 51.94 | 35.55 | 14.87 | 44.85 | ||||||||||||
1959 | 9.11 | 16.21 | 31.84 | 47.08 | 61.29 | 69.23 | 71.16 | 73.74 | 62.33 | 44.65 | 25.75 | 29.45 | 45.15 | |||||||||||||
1960 | 18.35 | 20.41 | 22.42 | 47.42 | 58.13 | 64.40 | 70.69 | 72.16 | 63.40 | 49.79 | 36.50 | 19.76 | 45.29 | |||||||||||||
1961 | 16.42 | 26.55 | 35.10 | 40.75 | 55.92 | 68.05 | 71.02 | 71.95 | 60.85 | 51.40 | 34.03 | 18.26 | 45.86 | |||||||||||||
1962 | 11.63 | 15.64 | 28.56 | 44.17 | 62.61 | 66.37 | 68.82 | 69.13 | 58.62 | 53.08 | 35.69 | a | 21.21 | 44.63 | ||||||||||||
1963 | 5.68 | 14.55 | 34.50 | 48.35 | 56.76 | 69.65 | 73.50 | 68.42 | 62.78 | 58.92 | 39.32 | 11.65 | 45.34 | |||||||||||||
1964 | 21.47 | 25.17 | 29.26 | 47.38 | 62.03 | 67.95 | 75.23 | 69.08 | 59.77 | 48.16 | 36.72 | 15.08 | 46.44 | |||||||||||||
1965 | 10.74 | 13.98 | 21.15 | 42.58 | 60.85 | 65.87 | 69.63 | 67.40 | 55.33 | 50.55 | b | 33.57 | 27.33 | a | 43.25 | |||||||||||
1966 | 4.21 | 16.98 | 34.34 | 41.82 | 52.98 | 67.55 | 74.34 | 67.84 | 60.13 | 49.16 | 32.88 | 19.98 | 43.52 | |||||||||||||
1967 | 16.48 | 10.62 | 30.69 | 45.98 | 52.37 | 67.22 | 69.40 | 66.55 | 59.73 | 47.87 | 31.87 | 23.05 | 43.49 | |||||||||||||
1968 | 15.16 | 15.95 | 39.10 | 49.02 | 54.68 | 66.27 | 70.53 | 69.69 | 60.45 | 51.11 | 34.58 | 19.13 | 45.47 | |||||||||||||
1969 | 10.61 | 19.46 | 25.80 | a | 48.33 | 59.10 | 60.80 | 70.84 | 72.27 | 62.02 | 47.03 | 32.98 | 21.21 | 44.21 | ||||||||||||
1970 | 7.23 | a | 16.79 | 25.87 | 46.53 | 59.31 | 69.43 | 73.00 | 70.34 | 60.52 | 50.35 | 32.88 | 19.45 | 44.31 | ||||||||||||
1971 | 7.11 | 17.05 | 26.90 | 46.35 | 54.34 | 71.60 | a | 68.08 | 67.84 | 62.83 | 55.21 | 34.57 | 19.92 | 44.32 | ||||||||||||
1972 | 10.18 | 11.71 | 26.08 | 42.07 | 61.24 | 65.57 | 69.02 | 69.81 | 59.67 | 45.89 | 33.62 | 13.84 | 42.39 | |||||||||||||
1973 | 17.26 | 21.57 | 41.08 | 40.18 | m | 55.21 | 69.23 | 72.27 | 73.00 | 61.90 | a | 56.68 | 36.66 | a | 18.60 | 47.59 | a | |||||||||
1974 | 15.60 | 18.54 | b | 31.47 | 47.98 | 56.27 | a | 65.18 | 76.82 | 68.35 | 57.22 | 51.05 | a | 37.00 | a | 26.60 | 46.01 | |||||||||
1975 | 17.26 | 19.15 | a | 25.52 | 40.42 | 61.74 | 68.17 | 75.65 | 70.98 | 58.37 | 53.68 | 38.71 | a | 20.90 | 45.88 | |||||||||||
1976 | 12.05 | 27.86 | 33.90 | 50.93 | a | 57.32 | 69.47 | 73.11 | 70.08 | 61.15 | 44.66 | 28.78 | 10.23 | 44.96 | ||||||||||||
1977 | 1.85 | a | 21.70 | 37.21 | c | 53.62 | 66.98 | 67.24 | a | 74.34 | 66.32 | a | 61.95 | a | 48.87 | 32.90 | 16.65 | 45.80 | ||||||||
1978 | 8.05 | 10.62 | b | 29.39 | 45.50 | 60.25 | a | 66.45 | 70.13 | 70.23 | 65.97 | 49.79 | 31.35 | 14.55 | 43.52 | |||||||||||
1979 | 3.24 | 10.55 | 29.21 | 42.57 | 54.40 | 65.93 | 70.73 | 67.68 | 61.87 | 46.82 | a | 33.03 | 25.65 | a | 42.64 | |||||||||||
1980 | 13.55 | a | 15.14 | 26.18 | 48.13 | 60.37 | 67.18 | 73.66 | 70.48 | 60.67 | 45.08 | 36.35 | 20.55 | a | 44.78 | |||||||||||
1981 | 19.02 | 23.46 | 35.97 | 48.95 | 55.92 | a | 67.02 | a | 71.16 | 69.82 | 59.69 | c | 46.84 | 37.40 | 19.47 | 46.23 | ||||||||||
1982 | 3.52 | 16.21 | 28.97 | 42.42 | 62.02 | b | 61.90 | 74.00 | a | 69.35 | a | 60.78 | 50.68 | 32.38 | 26.61 | 44.07 | ||||||||||
1983 | 20.19 | 26.36 | c | 33.64 | b | 42.36 | a | 54.02 | 67.75 | 75.74 | b | 74.52 | 62.28 | 49.18 | a | 35.62 | a | 7.83 | b | 45.79 | ||||||
1984 | 13.62 | a | 28.38 | c | 26.93 | a | 47.97 | 55.12 | a | 68.42 | 70.73 | a | 72.68 | a | 58.23 | 52.56 | 34.05 | 19.53 | a | 45.69 | ||||||
1985 | 12.03 | 16.29 | 37.02 | 52.02 | 62.77 | a | 63.95 | 70.76 | 66.94 | 60.52 | 48.34 | 27.23 | 8.90 | 43.90 | ||||||||||||
1986 | 17.88 | a | 16.96 | a | 35.35 | 51.40 | 60.10 | 68.27 | 73.08 | 66.53 | 60.58 | 49.08 | 30.83 | 24.06 | 46.18 | |||||||||||
1987 | 22.97 | a | 30.57 | 37.79 | 52.32 | 62.48 | 70.55 | 74.13 | 68.81 | 62.28 | 43.84 | 39.43 | a | 25.65 | 49.23 | |||||||||||
1988 | 9.34 | b | 13.77 | a | 34.00 | 46.85 | 62.50 | 71.22 | 74.76 | 73.35 | 62.25 | 43.81 | 34.82 | 20.27 | 45.58 | |||||||||||
1989 | 22.15 | a | 10.63 | a | 26.18 | 44.87 | 57.08 | 64.69 | a | 73.84 | 69.03 | a | 59.97 | 49.08 | 29.88 | 11.16 | 43.21 | |||||||||
1990 | 25.50 | 22.59 | 35.81 | 47.43 | 54.97 | 67.30 | 68.87 | 67.84 | 62.17 | 46.98 | 38.73 | 17.30 | a | 46.29 | ||||||||||||
1991 | 13.23 | 23.96 | 34.00 | 48.10 | 61.05 | 70.88 | 70.21 | 67.95 | 59.62 | 47.16 | 26.30 | 21.48 | 45.33 | |||||||||||||
1992 | 21.84 | 29.14 | 32.21 | 43.43 | 58.90 | 62.92 | 64.40 | 64.48 | 58.48 | 46.97 | 32.47 | a | 22.44 | 44.81 | ||||||||||||
1993 | 14.98 | a | 18.21 | 29.18 | a | 43.07 | 54.35 | 60.08 | 68.08 | 67.10 | 51.05 | 45.37 | 29.93 | 22.89 | 42.03 | |||||||||||
1994 | 4.69 | 13.46 | 34.27 | a | 45.15 | 57.84 | 66.46 | b | 67.32 | a | 64.08 | 60.82 | 49.58 | 37.07 | 23.69 | 43.70 | ||||||||||
1995 | 17.21 | 18.57 | 30.52 | 41.10 | 54.85 | 69.88 | 71.42 | a | 74.21 | 59.07 | 48.95 | 26.43 | 18.02 | a | 44.19 | |||||||||||
1996 | 9.53 | 18.47 | 24.50 | 41.90 | 52.61 | 63.67 | 64.88 | a | 66.37 | 53.89 | b | 47.10 | b | 25.72 | 15.24 | 40.32 | ||||||||||
1997 | 11.47 | 21.65 | a | 31.85 | 44.08 | 53.27 | a | 68.38 | 70.27 | 67.35 | 63.17 | a | 51.52 | a | 30.65 | 28.27 | 45.16 | |||||||||
1998 | 20.81 | 32.89 | a | 33.63 | 51.78 | 64.82 | 65.50 | 72.05 | a | 71.29 | 66.67 | 51.77 | 38.87 | 27.00 | 49.76 | |||||||||||
1999 | 13.58 | 28.55 | 34.35 | 49.67 | 61.10 | 67.63 | 75.56 | 69.63 | 61.60 | a | 50.32 | a | 41.97 | 25.50 | 48.29 | |||||||||||
2000 | 16.69 | 28.22 | 41.02 | 47.02 | 60.05 | 66.13 | 71.74 | 71.27 | 61.48 | 54.10 | 34.04 | b | 9.21 | 46.75 | ||||||||||||
2001 | 21.98 | 15.45 | 29.84 | 49.43 | 59.84 | 67.60 | 72.66 | 72.55 | 60.93 | 49.08 | 46.57 | 29.53 | 47.96 | |||||||||||||
2002 | 26.44 | 29.86 | 27.02 | 46.18 | 53.80 | a | 70.03 | 76.16 | 70.37 | 64.85 | 44.34 | 33.86 | a | 27.35 | 47.52 | |||||||||||
2003 | 16.95 | 17.67 | a | 32.55 | 47.20 | 57.53 | 66.28 | 71.40 | 73.55 | 62.15 | 50.44 | 34.85 | 25.98 | 46.38 | ||||||||||||
2004 | 13.27 | 22.71 | 34.68 | 48.80 | 56.65 | 64.70 | 70.00 | 65.66 | 66.20 | 51.21 | 38.36 | a | 23.55 | 46.32 | ||||||||||||
2005 | 17.40 | 26.30 | a | 30.93 | a | 50.71 | a | 55.56 | 71.58 | 73.48 | a | 70.13 | 66.05 | a | 52.19 | b | 37.57 | 20.68 | 47.72 | |||||||
2006 | 30.06 | 22.21 | 33.66 | 52.77 | 60.19 | 68.60 | 76.29 | 71.33 | a | 59.23 | 46.63 | 37.72 | a | 31.07 | a | 49.15 | ||||||||||
2007 | 22.26 | 14.41 | 38.02 | 46.45 | 62.52 | a | 69.95 | 73.05 | a | 70.70 | a | 63.95 | 54.60 | 34.32 | 17.55 | 47.31 | ||||||||||
2008 | 14.60 | a | 15.60 | 28.29 | 44.17 | 54.34 | 65.87 | 70.71 | 68.48 | 62.40 | 49.66 | 34.83 | 15.02 | 43.66 | ||||||||||||
2009 | 3.90 | 18.73 | 28.45 | 43.92 | 55.56 | 63.72 | 64.35 | 65.59 | b | 62.42 | 41.97 | 39.90 | 17.58 | 42.17 | ||||||||||||
2010 | 11.90 | 16.73 | 37.55 | 50.77 | 57.50 | 65.72 | 71.77 | 72.11 | 57.22 | 49.98 | 33.80 | 14.53 | 44.97 | |||||||||||||
2011 | 9.45 | b | 15.83 | a | 26.08 | 42.52 | a | 54.31 | 65.33 | a | 74.33 | a | 69.00 | 58.53 | a | 50.63 | 36.86 | a | 24.90 | 43.98 | ||||||
2012 | 20.45 | 25.86 | a | 45.23 | 46.55 | 60.31 | 67.17 | 75.55 | 66.90 | 58.37 | 44.10 | a | 34.63 | 22.13 | a | 47.27 | ||||||||||
2013 | 14.87 | 16.54 | 22.82 | 35.84 | a | 55.10 | a | 64.58 | 70.27 | 68.76 | 62.05 | 46.87 | 30.15 | 11.30 | a | 41.60 | ||||||||||
2014 | 5.52 | 4.66 | 21.02 | a | 40.10 | 54.92 | 67.03 | 67.60 | 69.13 | 59.23 | 46.53 | 24.87 | 24.13 | 40.39 | ||||||||||||
2015 | 15.13 | 8.38 | 31.03 | 46.32 | 56.63 | 65.95 | a | 69.84 | 66.79 | 65.50 | 49.50 | 39.95 | 30.58 | 45.47 | ||||||||||||
2016 | 14.77 | 22.31 | 38.92 | 44.33 | 56.21 | b | 67.70 | 70.89 | 69.97 | 62.98 | a | 50.32 | 42.02 | 20.29 | 46.73 | |||||||||||
2017 | 18.52 | 27.09 | 29.87 | 46.32 | 54.35 | a | 65.68 | 70.32 | 65.19 | b | 63.33 | a | 49.66 | 30.60 | 17.62 | a | 44.88 | |||||||||
2018 | 12.34 | 12.80 | 29.89 | 33.55 | a | 64.19 | 69.55 | 71.10 | 68.90 | 62.08 | 43.45 | 26.57 | 23.71 | b | 43.18 | |||||||||||
2019 | 14.00 | 12.11 | 24.37 | a | 42.63 | 52.72 | d | 65.08 | 71.94 | 67.02 | a | 64.15 | 45.74 | 29.20 | 21.24 | 42.52 | ||||||||||
2020 | 19.73 | 19.33 | 35.56 | 42.50 | a | 56.82 | 69.16 | b | 72.63 | 69.81 | 58.27 | 40.82 | 38.26 | a | 23.48 | 45.53 | ||||||||||
2021 | 20.45 | 10.93 | 38.77 | 44.12 | 55.14 | b | 71.97 | 71.35 | 69.32 | a | 61.85 | 54.40 | a | 34.63 | 22.85 | 46.32 | ||||||||||
2022 | 7.19 | 12.98 | 26.12 | n | 40.12 | i | 57.12 | a | 66.87 | 71.10 | 68.63 | 61.40 | 47.42 | 34.03 | 16.15 | a | 44.29 | b | ||||||||
2023 | 21.06 | 17.68 | 26.83 | a | 43.40 | 58.53 | a | 69.60 | 69.31 | 69.13 | a | 64.60 | a | 50.27 | 34.25 | b | 31.50 | 46.35 | ||||||||
2024 | 20.84 | 30.60 | 33.85 | 44.30 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.43 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.58 | 19.03 | 31.50 | 45.85 | 57.86 | 67.04 | 71.56 | 69.32 | 61.05 | 48.98 | 34.18 | 20.57 | 45.09 | |||||||||||||
S.D. | 6.20 | 6.24 | 5.15 | 3.90 | 3.42 | 2.54 | 2.77 | 2.38 | 2.78 | 3.47 | 4.28 | 5.64 | 1.96 | |||||||||||||
SKEW | -0.05 | 0.28 | 0.12 | -0.45 | 0.41 | -0.33 | -0.37 | 0.12 | -0.70 | 0.20 | -0.05 | -0.24 | -0.06 | |||||||||||||
MAX | 30.06 | 32.89 | 45.23 | 53.62 | 66.98 | 71.97 | 76.82 | 74.52 | 66.67 | 58.92 | 46.57 | 31.50 | 49.76 | |||||||||||||
MIN | 1.85 | 4.66 | 21.02 | 33.55 | 52.37 | 60.08 | 64.35 | 64.08 | 51.05 | 40.82 | 24.87 | 7.83 | 40.32 | |||||||||||||
YRS | 67 | 67 | 66 | 64 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 67 | 64 |