YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | 14.42 | 13.74 | a | 30.47 | 47.90 | 61.48 | c | 72.64 | a | 77.32 | 74.81 | 57.95 | 52.24 | 36.47 | 19.97 | 46.62 | ||||||||||
1950 | 6.84 | 15.66 | 23.65 | 37.15 | 55.02 | 66.63 | 68.65 | 67.02 | a | 61.35 | 53.18 | 26.60 | f | 12.05 | 42.47 | a | ||||||||||
1951 | 8.06 | 16.04 | 18.52 | b | 41.00 | 60.02 | 62.43 | 69.85 | 66.52 | 56.43 | 48.55 | 25.38 | 16.27 | 40.76 | ||||||||||||
1952 | 12.53 | 23.09 | 24.73 | a | 49.26 | a | 56.16 | 67.70 | 71.21 | 67.79 | 61.68 | 43.81 | 35.23 | b | 23.17 | b | 44.70 | |||||||||
1953 | 17.47 | b | 17.69 | a | 30.81 | 40.65 | 57.10 | a | 68.83 | a | 70.29 | 70.92 | 60.75 | 56.53 | 38.47 | 21.60 | a | 45.92 | ||||||||
1954 | 10.97 | 32.54 | 28.10 | a | 46.40 | a | 52.27 | 69.40 | 71.68 | 68.24 | 60.09 | b | 47.13 | 38.45 | a | 22.44 | 45.64 | |||||||||
1955 | 13.52 | 13.25 | 26.12 | b | 53.03 | 62.17 | a | 65.88 | a | 75.52 | 73.27 | a | 61.12 | 49.69 | 25.70 | 11.61 | 44.24 | |||||||||
1956 | 10.82 | 13.41 | a | 25.53 | b | 41.28 | 56.92 | 71.52 | 67.40 | 68.65 | 57.18 | 55.74 | 34.02 | b | 24.06 | 43.88 | ||||||||||
1957 | 10.60 | 20.38 | 30.31 | 46.82 | 55.92 | 64.92 | 74.21 | 68.13 | 58.08 | 47.05 | 31.66 | a | 25.58 | a | 44.47 | |||||||||||
1958 | 21.87 | 14.45 | 31.26 | 46.25 | b | 59.10 | 61.92 | 67.63 | 68.52 | 60.52 | 52.24 | 34.97 | 14.67 | a | 44.45 | |||||||||||
1959 | 9.90 | 15.36 | 32.76 | b | 46.93 | 60.20 | a | 68.65 | 71.03 | 72.58 | 60.85 | 42.89 | 24.65 | 29.11 | 44.58 | |||||||||||
1960 | 15.79 | 17.94 | b | 19.47 | 46.57 | 56.73 | 64.22 | 70.94 | 70.55 | 61.23 | 49.68 | 35.88 | 19.37 | 44.03 | ||||||||||||
1961 | 16.12 | a | 25.12 | 33.66 | 39.97 | 54.79 | 67.20 | 69.29 | 70.73 | 59.88 | 51.19 | 33.53 | 16.05 | 44.79 | ||||||||||||
1962 | 9.15 | 14.54 | 25.34 | 43.60 | 60.74 | 65.53 | 67.61 | 68.03 | 57.63 | 52.02 | 38.07 | 21.89 | 43.68 | |||||||||||||
1963 | 5.07 | b | 15.61 | 36.08 | a | 48.37 | 56.37 | 69.38 | 72.26 | 68.61 | 62.90 | 58.77 | 39.76 | a | 10.82 | 45.33 | ||||||||||
1964 | 22.03 | 25.78 | 27.50 | 48.18 | 60.91 | b | 68.47 | 75.08 | 67.31 | 59.95 | 49.48 | 35.55 | 14.88 | a | 46.26 | |||||||||||
1965 | 10.97 | 12.66 | 17.44 | 42.45 | 60.94 | 66.83 | 69.87 | 67.37 | 52.92 | 51.28 | a | 33.13 | 27.92 | 42.81 | ||||||||||||
1966 | 3.37 | 14.98 | 36.39 | 41.62 | 53.45 | a | 68.08 | 74.42 | 66.63 | a | 59.42 | 48.48 | 30.38 | a | 18.13 | 42.95 | ||||||||||
1967 | 17.15 | 10.39 | 31.13 | a | 45.68 | 52.90 | 66.10 | 68.19 | 66.27 | 59.23 | 47.29 | 32.20 | 23.06 | 43.30 | ||||||||||||
1968 | 14.95 | 14.55 | 39.77 | 49.70 | b | 54.45 | 67.43 | 69.76 | 69.25 | a | 59.57 | 51.05 | 33.97 | 18.00 | a | 45.20 | ||||||||||
1969 | 8.19 | 19.34 | 23.78 | a | 48.30 | 60.19 | 60.40 | 70.63 | 70.97 | 60.68 | 45.90 | 33.33 | 18.68 | 43.37 | ||||||||||||
1970 | 5.55 | 15.91 | 23.94 | 44.07 | 58.95 | 69.17 | 72.08 | 70.47 | 59.77 | 48.05 | 31.43 | 16.60 | 43.00 | |||||||||||||
1971 | 6.79 | 17.55 | 26.79 | 46.78 | 55.11 | 70.88 | 67.63 | 67.44 | 60.67 | 51.85 | a | 32.10 | 17.53 | 43.43 | ||||||||||||
1972 | 5.85 | 10.17 | 25.81 | 41.53 | 60.81 | 65.22 | 67.79 | 68.48 | 57.75 | 43.82 | 31.73 | 11.35 | 40.86 | |||||||||||||
1973 | 16.94 | 20.32 | 39.06 | 43.25 | 53.68 | 67.58 | 69.60 | 70.15 | 57.47 | 52.85 | 33.22 | 16.39 | 45.04 | |||||||||||||
1974 | 10.84 | 14.54 | 28.48 | 46.07 | 53.84 | 64.35 | 74.02 | 65.20 | a | 56.17 | 49.03 | 33.68 | 23.15 | 43.28 | ||||||||||||
1975 | 13.69 | 14.86 | 21.19 | 37.91 | a | 59.88 | a | 66.13 | 72.65 | 68.23 | 55.95 | 51.15 | 35.73 | 20.58 | 43.16 | |||||||||||
1976 | 11.84 | 27.33 | 31.60 | a | 49.92 | 56.16 | 67.93 | 71.24 | 66.95 | 56.67 | 42.71 | 27.43 | 11.45 | 43.44 | ||||||||||||
1977 | 0.25 | a | 23.52 | a | 36.74 | 52.67 | a | 66.15 | 67.42 | 73.55 | 64.12 | a | 59.73 | 47.26 | 31.32 | b | 14.37 | 44.76 | ||||||||
1978 | 5.29 | c | 8.70 | a | 27.89 | 44.28 | 60.57 | b | 66.48 | 69.10 | 68.77 | 65.53 | 50.18 | 30.97 | 13.66 | 42.62 | ||||||||||
1979 | 1.29 | 8.24 | a | 26.58 | 42.68 | 54.71 | 66.52 | 70.35 | 66.66 | 61.12 | 46.39 | 30.07 | 24.86 | c | 41.62 | |||||||||||
1980 | 15.05 | 13.64 | 26.26 | 47.52 | 59.74 | 65.86 | a | 72.71 | 67.68 | 59.23 | 42.57 | d | 34.02 | 18.63 | 43.58 | |||||||||||
1981 | 17.39 | 21.80 | a | 36.21 | 48.17 | 55.19 | 65.10 | a | 69.55 | 66.56 | 57.37 | 43.83 | b | 34.95 | 13.63 | 44.15 | ||||||||||
1982 | -0.76 | 12.22 | a | 26.42 | a | 40.37 | 60.76 | 60.93 | 71.38 | a | 67.21 | 57.98 | 47.13 | ----- | z | 25.20 | a | 42.62 | a | |||||||
1983 | 19.05 | a | 25.21 | 33.53 | 41.81 | a | 55.19 | b | 67.03 | 75.31 | b | 74.26 | 60.12 | b | 47.69 | b | 33.45 | a | 1.25 | a | 44.49 | |||||
1984 | 12.35 | d | 25.90 | 23.57 | b | 45.04 | b | 55.05 | 67.00 | a | 69.22 | a | 70.81 | 55.84 | b | 48.60 | a | 32.76 | a | 16.31 | 43.54 | |||||
1985 | 8.40 | a | 13.50 | 35.00 | 51.20 | 61.82 | a | 63.75 | 70.79 | 65.10 | a | 59.55 | 45.81 | 23.57 | a | 7.10 | a | 42.13 | ||||||||
1986 | 16.12 | b | 14.43 | a | 32.95 | 48.28 | a | 59.05 | a | 68.98 | 71.89 | 64.77 | 58.35 | 48.03 | 26.18 | 22.29 | 44.28 | |||||||||
1987 | 19.68 | a | 29.98 | 37.05 | 51.68 | 62.10 | 70.77 | 72.95 | 65.13 | 59.48 | 41.85 | 34.57 | 21.52 | b | 47.23 | |||||||||||
1988 | 5.10 | b | 9.71 | a | 30.92 | 44.97 | a | 63.76 | 71.24 | a | 72.89 | 69.82 | a | 58.47 | 40.03 | 27.55 | a | 16.58 | a | 42.59 | ||||||
1989 | 18.30 | a | 6.11 | 22.90 | a | 42.70 | 54.07 | a | 62.78 | 69.62 | a | 64.55 | a | 57.42 | 50.05 | a | 27.65 | 9.65 | a | 40.48 | ||||||
1990 | 25.85 | 23.54 | 35.50 | 47.13 | 55.34 | 68.80 | 69.97 | 68.27 | a | 62.63 | 47.60 | 37.46 | b | 15.42 | 46.46 | |||||||||||
1991 | 10.42 | a | 23.86 | 33.45 | 49.22 | 60.45 | 71.33 | 70.60 | 68.61 | 58.25 | 46.30 | a | 23.58 | 18.95 | 44.59 | |||||||||||
1992 | 21.27 | 25.91 | 32.24 | 42.90 | 60.03 | 64.12 | 63.88 | a | 63.47 | 59.67 | a | 46.90 | 29.64 | b | 18.23 | c | 44.02 | |||||||||
1993 | 12.27 | 15.02 | 26.60 | a | 43.70 | 57.26 | b | 64.16 | b | 69.03 | b | 68.72 | a | 54.95 | 45.86 | b | 30.77 | b | 20.48 | 42.40 | ||||||
1994 | 3.83 | d | 10.48 | 33.45 | a | 46.67 | f | 61.15 | a | 68.28 | 68.08 | a | 64.84 | 63.18 | 50.80 | a | 36.35 | 22.71 | b | 43.92 | a | |||||
1995 | 16.10 | b | 18.39 | 34.12 | a | 40.88 | e | 56.11 | 68.76 | a | 71.10 | b | 73.61 | 58.38 | a | 46.94 | 25.66 | b | 18.02 | b | 44.01 | |||||
1996 | 9.34 | b | 18.65 | b | 24.83 | b | 40.11 | c | 53.21 | c | 67.86 | a | 68.31 | 69.00 | a | 60.10 | 48.08 | f | 24.71 | b | 13.11 | h | 43.61 | b | ||
1997 | 8.46 | f | 18.02 | b | 28.74 | b | 42.81 | a | 52.90 | e | 68.57 | 69.55 | a | 67.66 | 61.96 | b | 50.05 | a | 26.94 | d | 26.61 | 46.71 | a | |||
1998 | 15.91 | c | 30.16 | 31.18 | 50.24 | a | 63.60 | b | 64.17 | a | 70.63 | 70.26 | 65.48 | 50.37 | 37.11 | b | 25.19 | 47.86 | ||||||||
1999 | 10.83 | g | 28.06 | d | 31.75 | a | 47.45 | b | 58.87 | 65.80 | 73.62 | a | 67.22 | a | 58.67 | a | 48.50 | a | 40.54 | c | 24.06 | d | 49.50 | a | ||
2000 | 12.17 | b | 26.19 | b | 40.06 | 44.86 | a | 58.40 | b | 64.39 | c | 69.85 | a | 66.90 | a | 59.40 | d | 50.56 | e | 28.05 | 4.17 | g | 47.35 | a | ||
2001 | 17.70 | f | 8.44 | c | 24.11 | 46.62 | b | 58.06 | 66.46 | c | 73.15 | 70.45 | 58.92 | 48.42 | a | 44.59 | a | 24.45 | a | 47.61 | a | |||||
2002 | 23.27 | c | 25.62 | c | 23.52 | b | 43.98 | d | 54.12 | a | 69.82 | b | 74.18 | 68.47 | a | 60.83 | d | 40.93 | a | 31.98 | a | 25.37 | a | 45.17 | ||
2003 | 14.44 | 13.96 | c | 29.67 | a | 47.00 | c | 55.23 | a | 64.95 | b | 69.98 | a | 71.27 | 59.12 | b | 49.34 | 31.28 | c | 22.16 | c | 44.03 | ||||
2004 | 10.71 | c | 20.66 | d | 34.86 | c | 48.73 | d | 55.07 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.01 | g |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | 27.59 | d | 19.32 | c | 31.54 | c | 51.22 | 58.77 | 68.93 | h | 75.33 | j | 69.05 | b | 55.91 | g | 45.87 | h | 36.79 | m | 26.50 | h | 42.92 | f | ||
2007 | 16.64 | j | 13.39 | f | 30.63 | p | 40.98 | g | 60.79 | b | 67.55 | j | 72.69 | g | 65.92 | g | 61.31 | d | 51.86 | f | 32.95 | a | 14.00 | a | 42.26 | h |
2008 | 8.14 | i | 13.04 | a | 25.26 | 41.48 | 54.98 | 65.25 | 70.29 | 67.47 | 61.05 | 46.42 | 32.53 | 11.50 | 44.48 | a | ||||||||||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.48 | b | 65.81 | d | 66.50 | b | 64.02 | a | 42.07 | b | 40.80 | 15.98 | 51.52 | e | ||
2010 | 9.73 | 13.57 | 36.89 | 53.15 | 58.27 | 66.10 | f | 72.65 | 73.11 | 58.42 | 51.90 | 33.18 | 13.76 | 43.15 | a | |||||||||||
2011 | 8.79 | 15.62 | 25.98 | a | 44.11 | b | 55.48 | 66.50 | 75.31 | 69.35 | 59.57 | 52.34 | 36.97 | 25.50 | 44.63 | |||||||||||
2012 | 21.82 | 25.16 | 46.05 | 47.77 | 61.68 | 68.62 | 76.58 | 68.00 | 60.08 | 45.73 | 35.57 | 21.47 | 48.21 | |||||||||||||
2013 | 15.39 | 15.50 | 22.89 | 37.30 | 54.84 | 65.98 | 71.10 | 69.48 | 64.18 | 47.69 | 30.72 | 11.31 | 42.20 | |||||||||||||
2014 | 7.10 | a | 6.16 | 22.53 | 41.40 | 55.61 | 67.38 | 68.69 | 70.44 | 61.08 | 48.00 | 24.27 | 23.16 | 41.32 | ||||||||||||
2015 | 16.52 | 9.70 | 32.35 | 47.23 | 56.97 | 66.92 | 69.74 | 67.21 | 66.40 | 50.53 | 40.33 | 28.81 | 46.06 | |||||||||||||
2016 | 14.23 | 22.76 | 38.76 | 46.67 | 57.66 | 68.40 | 71.13 | 70.08 | 63.93 | 50.89 | 42.50 | 18.97 | 47.16 | |||||||||||||
2017 | 18.90 | 29.55 | 31.40 | 47.65 | 55.60 | 67.55 | 71.26 | 65.77 | 64.12 | 49.89 | 31.98 | 18.87 | 46.05 | |||||||||||||
2018 | 13.16 | 11.89 | 29.47 | 33.22 | 64.50 | 69.53 | 70.85 | 69.61 | 63.60 | 43.90 | 25.98 | 23.65 | 43.28 | |||||||||||||
2019 | 12.82 | 8.29 | 25.29 | 43.90 | 52.13 | 66.67 | 71.66 | 66.79 | 63.82 | 44.87 | 29.10 | 20.85 | 42.18 | |||||||||||||
2020 | 18.60 | 17.14 | 34.71 | 42.23 | 56.29 | 70.22 | 72.68 | 69.82 | 59.13 | 41.85 | 37.88 | a | 24.16 | 45.39 | ||||||||||||
2021 | 20.79 | 9.48 | 38.29 | 45.20 | 57.16 | 72.68 | 71.71 | 70.52 | 63.15 | 54.13 | 35.77 | 22.87 | 46.81 | |||||||||||||
2022 | 7.74 | 11.62 | 30.02 | 38.57 | 58.32 | 69.22 | 72.77 | 68.85 | 62.45 | 49.45 | 33.95 | 14.81 | 43.15 | |||||||||||||
2023 | 18.24 | 17.04 | 25.73 | 43.38 | 60.95 | 70.77 | 69.90 | 70.66 | 65.62 | 50.42 | 35.97 | 32.16 | 46.74 | |||||||||||||
2024 | 18.71 | 31.22 | 34.94 | 46.40 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.29 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.96 | 17.59 | 29.89 | 45.10 | 57.73 | 67.11 | 71.00 | 68.56 | 60.10 | 48.37 | 32.75 | 19.07 | 44.21 | |||||||||||||
S.D. | 6.07 | 6.56 | 5.69 | 4.06 | 3.21 | 2.62 | 2.49 | 2.39 | 2.67 | 3.73 | 4.76 | 5.70 | 1.75 | |||||||||||||
SKEW | -0.00 | 0.43 | 0.18 | -0.27 | 0.33 | -0.19 | 0.12 | 0.36 | 0.16 | 0.03 | -0.02 | -0.36 | 0.12 | |||||||||||||
MAX | 27.59 | 32.54 | 46.05 | 53.15 | 66.15 | 72.68 | 77.32 | 74.81 | 66.40 | 58.77 | 44.59 | 32.16 | 48.21 | |||||||||||||
MIN | -0.76 | 6.11 | 17.44 | 33.22 | 52.13 | 60.40 | 63.88 | 63.47 | 52.92 | 40.03 | 23.57 | 1.25 | 40.48 | |||||||||||||
YRS | 69 | 73 | 73 | 71 | 73 | 70 | 71 | 72 | 72 | 70 | 70 | 70 | 60 |