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 | 76.31 | ----- | z | ----- | z | 54.32 | 38.17 | 22.05 | 47.71 | h | ||||
1950 | 8.72 | a | 13.41 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.06 | j | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.90 | k | |
1968 | ----- | z | ----- | z | 40.31 | ----- | z | 55.42 | 68.53 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.75 | i | |||
1969 | ----- | z | ----- | z | ----- | z | 49.88 | 61.31 | ----- | z | ----- | z | ----- | z | 62.93 | 47.21 | ----- | z | 21.50 | d | 48.57 | g | ||||
1970 | 6.08 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.89 | ----- | z | 61.25 | ----- | z | 33.53 | ----- | z | 43.69 | h | |||
1971 | 7.11 | ----- | z | 28.29 | ----- | z | ----- | z | 71.93 | a | ----- | z | 69.56 | 63.37 | ----- | z | ----- | z | ----- | z | 48.05 | g | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.32 | k | |
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 | 51.83 | a | 57.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.67 | j | |
1977 | ----- | z | ----- | z | 39.40 | b | ----- | z | ----- | z | ----- | z | 75.08 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.24 | j | |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 61.83 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.83 | k |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.63 | ----- | z | ----- | z | ----- | z | ----- | z | 69.63 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.76 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.26 | k | |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 62.07 | 51.39 | 31.10 | a | 10.87 | a | 38.86 | h | ||
1990 | 26.81 | 22.59 | a | 37.37 | a | 48.29 | b | 56.15 | 70.52 | a | 73.16 | 71.52 | 65.18 | ----- | z | 39.37 | 19.37 | 48.21 | a | |||||||
1991 | 13.70 | a | 25.57 | 34.74 | 50.42 | 62.15 | ----- | z | 71.81 | 71.11 | 58.63 | 46.19 | 23.55 | 20.45 | 43.48 | a | ||||||||||
1992 | 21.26 | 27.09 | a | 31.02 | 41.36 | a | 59.58 | 63.93 | c | 65.17 | a | 65.15 | a | 58.73 | 46.71 | 31.60 | 20.57 | a | 44.35 | |||||||
1993 | 11.55 | 15.38 | b | ----- | z | 42.29 | a | 56.93 | a | 63.93 | 70.26 | 70.76 | 54.90 | 46.52 | 31.02 | a | 21.58 | 44.10 | a | |||||||
1994 | 3.00 | a | 9.19 | a | 32.62 | a | 44.73 | 59.39 | 69.05 | 68.63 | 66.95 | 63.12 | a | 52.00 | 37.96 | b | 24.18 | 44.23 | ||||||||
1995 | 15.65 | 18.00 | 32.50 | 40.95 | 56.18 | 70.73 | 71.95 | 74.07 | a | 58.78 | 48.16 | 26.09 | b | 17.57 | b | 44.22 | ||||||||||
1996 | 8.37 | 15.50 | 23.22 | a | 40.60 | 54.60 | a | 67.29 | a | 69.32 | 69.29 | b | ----- | z | 49.52 | a | 25.71 | a | 16.33 | d | 39.98 | a | ||||
1997 | 9.35 | 19.60 | b | 28.84 | 43.07 | a | 52.65 | a | 68.97 | a | 70.05 | 67.68 | 62.64 | b | 49.38 | b | 28.55 | 26.43 | a | 43.93 | ||||||
1998 | 18.98 | c | 30.52 | d | 31.10 | b | 50.10 | d | 64.22 | b | 65.67 | c | ----- | z | 71.17 | e | 65.60 | e | 51.11 | c | 36.82 | 27.83 | d | 46.65 | a | |
1999 | 9.86 | b | 26.35 | a | 32.07 | a | 48.80 | 61.12 | b | 66.64 | a | 74.78 | b | 69.12 | c | 60.41 | c | 47.02 | b | 40.88 | b | 23.76 | b | 46.73 | ||
2000 | 14.05 | 25.45 | 39.29 | 45.85 | c | 58.89 | 65.32 | 71.68 | 70.98 | a | 60.37 | 52.58 | 31.92 | 7.68 | 45.34 | |||||||||||
2001 | 17.73 | 10.48 | 26.35 | 47.28 | 59.30 | a | 68.08 | 73.05 | 71.95 | ----- | z | 47.65 | 45.12 | 28.37 | 45.03 | a | ||||||||||
2002 | 23.52 | 27.33 | a | 24.24 | 44.61 | b | 54.05 | 69.38 | 76.02 | a | 69.70 | a | 64.17 | f | 43.15 | 32.20 | 25.06 | 44.48 | a | |||||||
2003 | 14.25 | a | 14.70 | 30.23 | a | 46.56 | c | 56.90 | 66.79 | a | 71.95 | a | 72.30 | a | 61.45 | 49.26 | 32.48 | 24.35 | a | 45.10 | ||||||
2004 | 12.02 | 19.34 | 35.33 | a | 47.72 | 54.40 | b | 64.90 | e | 70.46 | c | 64.55 | 65.90 | 50.08 | 37.50 | 22.56 | 45.40 | |||||||||
2005 | 15.15 | a | 25.00 | 29.26 | 50.65 | 54.68 | ----- | z | 74.39 | ----- | z | 64.87 | 52.27 | 36.08 | 18.03 | 42.04 | b | |||||||||
2006 | 28.02 | 19.96 | 31.31 | 51.62 | 59.58 | 68.53 | 75.69 | 70.97 | 58.60 | 45.05 | 35.62 | 27.97 | 47.74 | |||||||||||||
2007 | 19.79 | 11.12 | 35.85 | 45.93 | 62.29 | 70.53 | 72.67 | a | 70.53 | 63.68 | 54.95 | 34.87 | 15.90 | 46.51 | ||||||||||||
2008 | 12.13 | 12.97 | 26.82 | 43.23 | 55.40 | 67.50 | 72.61 | 69.29 | 63.70 | 49.58 | 34.17 | 12.73 | 43.34 | |||||||||||||
2009 | 4.77 | 20.41 | 30.53 | 46.67 | 58.32 | 65.03 | 66.56 | 67.89 | 64.92 | 43.44 | 40.97 | 18.21 | 43.98 | |||||||||||||
2010 | 11.15 | 15.98 | 38.42 | 53.55 | 59.29 | 68.12 | 74.65 | 74.94 | 59.67 | 53.31 | 35.37 | 15.47 | 46.66 | |||||||||||||
2011 | 10.08 | 16.79 | 28.24 | 44.75 | 57.13 | 67.45 | 77.40 | 72.02 | 60.95 | 53.32 | 38.42 | 25.95 | 46.04 | |||||||||||||
2012 | 21.97 | 26.79 | 48.00 | 48.35 | 63.15 | 70.75 | 78.02 | 70.08 | 61.00 | 46.40 | 36.38 | 23.61 | 49.54 | |||||||||||||
2013 | 16.47 | 17.54 | 25.00 | 39.23 | 56.55 | 67.97 | a | 73.16 | 71.61 | 64.85 | 48.40 | 31.77 | 12.77 | 43.78 | ||||||||||||
2014 | 7.58 | 5.61 | 23.24 | 42.48 | 57.69 | 70.10 | 70.90 | 72.42 | 62.50 | b | 48.19 | 26.30 | 24.42 | 42.62 | ||||||||||||
2015 | 17.37 | a | 9.54 | 32.39 | 48.29 | a | 58.53 | 68.57 | a | 72.06 | 69.26 | 67.82 | 50.94 | 41.45 | 31.42 | 47.30 | ||||||||||
2016 | 15.74 | 23.22 | 40.02 | 47.42 | 58.68 | 69.43 | 73.55 | 72.42 | 65.50 | 52.95 | 43.57 | 20.68 | a | 48.60 | ||||||||||||
2017 | 19.26 | 29.38 | 32.18 | 49.18 | 57.00 | 69.17 | 72.56 | 67.42 | 66.05 | 51.98 | 32.97 | 19.53 | 47.22 | |||||||||||||
2018 | 12.42 | 13.24 | a | 30.50 | 35.60 | 65.76 | 71.03 | 73.16 | 71.53 | a | 64.85 | 45.21 | 27.68 | 25.18 | 44.68 | |||||||||||
2019 | 13.71 | 9.61 | 26.40 | 45.17 | 53.62 | b | 68.08 | 73.95 | 69.10 | 65.23 | 46.48 | 29.95 | 22.77 | 43.67 | ||||||||||||
2020 | 20.06 | 18.22 | 36.00 | 43.95 | 57.62 | a | 70.25 | 75.23 | 71.47 | 60.22 | 42.97 | 38.88 | 24.66 | 46.63 | ||||||||||||
2021 | 20.79 | 11.04 | a | 38.85 | 46.27 | 58.32 | 73.88 | 72.82 | 71.58 | 63.57 | 54.66 | 36.18 | 24.27 | 47.69 | ||||||||||||
2022 | 8.15 | 12.35 | a | 30.65 | 39.90 | 60.32 | 70.50 | 73.29 | 69.84 | 63.47 | 49.29 | 35.25 | 16.65 | 44.14 | ||||||||||||
2023 | 21.00 | 18.91 | 28.94 | 45.62 | 61.48 | 71.27 | 70.63 | 71.55 | 66.58 | 51.98 | 36.17 | 32.03 | a | 48.01 | ||||||||||||
2024 | 19.86 | c | 31.36 | 35.53 | 46.62 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.92 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.67 | 18.60 | 32.30 | 45.89 | 58.37 | 68.52 | 72.60 | 70.27 | 62.67 | 49.27 | 34.48 | 21.43 | 45.67 | |||||||||||||
S.D. | 6.09 | 6.87 | 5.51 | 3.99 | 3.06 | 2.34 | 2.67 | 2.21 | 2.85 | 3.33 | 5.10 | 5.50 | 1.84 | |||||||||||||
SKEW | 0.18 | 0.15 | 0.52 | -0.37 | 0.31 | -0.17 | -0.48 | -0.58 | -0.52 | -0.13 | -0.14 | -0.39 | 0.30 | |||||||||||||
MAX | 28.02 | 31.36 | 48.00 | 53.55 | 65.76 | 73.88 | 78.02 | 74.94 | 67.82 | 54.95 | 45.12 | 32.03 | 49.54 | |||||||||||||
MIN | 3.00 | 5.61 | 23.22 | 35.60 | 52.65 | 63.93 | 65.17 | 64.55 | 54.90 | 42.97 | 23.55 | 7.68 | 42.62 | |||||||||||||
YRS | 38 | 36 | 37 | 36 | 38 | 34 | 39 | 35 | 35 | 36 | 37 | 37 | 26 |