YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.56 | m | ----- | z |
1945 | 10.91 | c | 15.84 | 37.95 | 43.33 | 50.40 | b | 59.60 | 68.56 | ----- | z | 57.91 | b | 45.87 | 32.46 | b | 14.00 | 39.71 | a | |||||||
1946 | 16.58 | e | 16.02 | 39.63 | 47.95 | 55.52 | c | 67.57 | 72.38 | a | 67.27 | 59.88 | 51.97 | 33.50 | ----- | z | 48.02 | a | ||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.47 | n | 17.63 | 17.63 | k | |
1948 | 7.63 | 15.81 | 26.56 | 52.00 | a | 56.81 | 65.98 | 72.50 | 70.98 | 65.55 | 48.35 | a | 36.07 | 19.82 | 44.84 | |||||||||||
1949 | 17.00 | 15.52 | 28.87 | 45.17 | 59.81 | j | 70.02 | c | 73.85 | 72.69 | 58.13 | 51.24 | 35.00 | 19.84 | 44.30 | a | ||||||||||
1950 | 9.25 | c | 15.07 | 22.39 | 35.80 | 54.32 | 65.08 | 67.26 | 64.10 | 58.95 | 51.77 | 27.55 | 11.31 | 40.24 | ||||||||||||
1951 | 8.87 | 16.09 | 21.77 | 41.10 | 59.85 | 62.03 | 68.52 | 64.66 | 55.25 | 46.89 | 24.03 | 16.34 | 40.45 | |||||||||||||
1952 | 13.74 | 20.70 | a | 24.07 | a | 46.97 | a | 56.21 | 66.92 | 71.16 | 65.97 | 59.84 | a | 41.34 | 33.98 | 22.75 | a | 43.64 | ||||||||
1953 | 17.17 | a | 14.98 | 28.53 | 39.84 | a | 56.88 | n | 67.07 | 68.77 | c | 69.65 | 59.67 | 54.10 | a | 37.30 | 20.55 | 43.42 | a | |||||||
1954 | 10.58 | 29.23 | 26.97 | 45.63 | 50.63 | 68.00 | 69.77 | 67.37 | 57.47 | 45.69 | 35.75 | 21.68 | 44.06 | |||||||||||||
1955 | 12.82 | 13.76 | a | 25.27 | 51.43 | 59.97 | a | 64.98 | 75.06 | 72.52 | c | 60.30 | b | 49.31 | 26.67 | 12.13 | a | 43.69 | ||||||||
1956 | 13.46 | c | 13.67 | 24.29 | 41.18 | e | 57.58 | e | 68.97 | 66.52 | c | 67.65 | 56.70 | 53.74 | 31.52 | 21.47 | 43.06 | |||||||||
1957 | 7.18 | 18.82 | 29.42 | 44.80 | b | 55.56 | 65.50 | 73.08 | 67.69 | 56.68 | 45.81 | 32.00 | b | 21.73 | 43.19 | |||||||||||
1958 | 18.94 | 13.21 | 31.37 | 46.00 | 56.37 | a | 60.90 | 68.62 | n | 67.34 | 60.43 | 50.16 | b | 33.93 | 12.85 | 41.05 | a | |||||||||
1959 | 8.53 | a | 14.07 | 30.26 | 45.78 | 58.48 | h | 67.89 | b | 70.38 | c | 71.87 | 60.77 | 43.61 | 24.11 | c | 28.03 | 42.30 | a | |||||||
1960 | 16.84 | 18.93 | 21.13 | 46.10 | 56.37 | 62.92 | 69.29 | g | 69.03 | b | 61.03 | 48.26 | 35.17 | 17.87 | 41.24 | a | ||||||||||
1961 | 14.24 | 25.23 | 33.68 | 40.37 | 54.52 | 66.70 | 69.65 | 70.29 | b | 58.93 | 49.81 | 32.47 | 17.20 | a | 44.42 | |||||||||||
1962 | 9.35 | 13.88 | 28.23 | 43.03 | 60.61 | 64.62 | a | 66.96 | g | 68.32 | 56.85 | 50.63 | 34.32 | 19.24 | 40.83 | a | ||||||||||
1963 | 4.52 | b | 12.32 | 32.85 | 47.38 | 54.26 | b | 67.95 | a | 72.27 | 67.06 | 61.35 | 57.32 | a | 37.55 | 9.77 | a | 43.72 | ||||||||
1964 | 19.87 | 22.93 | a | 27.61 | 45.95 | 61.40 | b | 68.03 | k | 74.55 | 67.98 | 58.09 | b | 46.89 | 35.30 | 13.42 | 43.09 | a | ||||||||
1965 | 9.29 | 12.04 | 20.44 | 41.52 | 60.77 | 65.22 | 68.39 | 66.76 | 53.50 | c | 49.40 | 32.75 | 25.82 | 42.16 | ||||||||||||
1966 | 3.42 | 17.12 | 33.68 | 41.50 | 53.71 | b | 64.55 | i | 74.00 | 67.19 | 59.93 | a | 47.47 | 31.52 | 18.37 | 40.72 | a | |||||||||
1967 | 15.58 | 9.70 | 28.95 | 45.12 | 51.19 | 66.35 | 68.95 | 66.67 | j | 59.22 | 46.47 | 30.33 | 21.13 | 40.27 | a | |||||||||||
1968 | 13.40 | 14.69 | 38.65 | a | 47.88 | 53.95 | 66.02 | 69.30 | a | 69.26 | 59.75 | 50.42 | 33.17 | 17.21 | 44.47 | |||||||||||
1969 | 10.26 | 19.62 | 24.82 | 47.35 | 58.37 | 59.35 | 69.97 | 71.77 | 61.23 | 44.94 | 32.42 | 20.48 | 43.38 | |||||||||||||
1970 | 6.45 | 15.46 | 25.20 | a | 45.77 | 57.35 | 68.23 | 72.98 | 69.27 | 59.85 | 49.50 | 31.47 | 19.29 | 43.40 | ||||||||||||
1971 | 6.85 | 16.64 | 26.26 | 45.25 | 53.90 | 70.78 | 67.66 | 67.02 | 61.48 | 53.87 | 33.52 | 18.53 | 43.48 | |||||||||||||
1972 | 6.56 | 11.72 | 24.87 | 41.27 | 60.89 | 65.32 | 68.62 | e | 70.00 | g | 58.30 | 43.85 | 32.37 | 13.03 | 38.80 | a | ||||||||||
1973 | 16.02 | 20.12 | 39.95 | 43.47 | a | 53.65 | 67.47 | 71.58 | a | 70.89 | 58.88 | 52.97 | 33.54 | b | 16.63 | a | 45.43 | |||||||||
1974 | 12.65 | 16.70 | 28.84 | 46.00 | 54.37 | 63.03 | 74.13 | 66.92 | 55.23 | b | 48.29 | 34.55 | a | 23.71 | 43.70 | |||||||||||
1975 | 14.55 | 17.25 | 23.32 | 39.13 | 59.66 | 65.72 | 72.10 | 68.00 | 55.47 | a | 50.10 | a | 36.43 | 19.39 | 43.43 | |||||||||||
1976 | 10.15 | 24.12 | 30.13 | 47.72 | 54.18 | 67.43 | 71.32 | 67.34 | 56.85 | 41.03 | 23.07 | 6.79 | 41.68 | |||||||||||||
1977 | -1.60 | 17.91 | 34.82 | 49.93 | 64.06 | 63.75 | 70.50 | 62.61 | 58.38 | 44.94 | 29.60 | 13.81 | 42.39 | |||||||||||||
1978 | 5.81 | 8.16 | 25.55 | 42.35 | 57.27 | 62.72 | 65.92 | 66.18 | 61.25 | 45.10 | 27.63 | 8.98 | 39.74 | |||||||||||||
1979 | -0.29 | 6.70 | 25.32 | 38.92 | 50.55 | 61.22 | 67.02 | 64.26 | 60.98 | 46.06 | 32.13 | 25.11 | 39.83 | |||||||||||||
1980 | 13.35 | 15.07 | 24.73 | 47.57 | 59.35 | 65.42 | 71.74 | 68.52 | 58.47 | 44.00 | 34.45 | 18.16 | 43.40 | |||||||||||||
1981 | 16.85 | 21.61 | 34.58 | 46.83 | 54.85 | 65.10 | 68.58 | 67.74 | 57.55 | 45.31 | 36.10 | 17.45 | 44.38 | |||||||||||||
1982 | 2.05 | b | 13.80 | 26.89 | 41.12 | 60.98 | 59.80 | 71.00 | 66.69 | 57.72 | a | 48.08 | 30.60 | 24.40 | 41.93 | |||||||||||
1983 | 18.00 | a | 25.95 | 32.77 | 40.78 | 51.74 | 65.98 | 73.89 | 72.47 | 60.57 | 47.87 | 34.75 | 5.73 | 44.21 | ||||||||||||
1984 | 11.27 | 27.55 | 25.53 | 47.18 | 54.11 | 67.78 | 69.79 | 71.82 | 57.45 | 51.98 | 33.02 | 18.53 | 44.67 | |||||||||||||
1985 | 10.60 | 16.32 | 36.68 | 51.18 | 62.45 | 63.52 | 70.47 | 66.92 | 59.62 | b | 47.77 | 26.32 | 7.78 | a | 43.30 | |||||||||||
1986 | 15.33 | a | 15.85 | a | 35.22 | a | 51.05 | 59.92 | a | 67.52 | b | 73.19 | b | 65.90 | b | 60.12 | 48.53 | 29.53 | 22.44 | 45.38 | ||||||
1987 | 21.12 | b | 28.96 | 37.69 | 52.95 | a | 61.97 | 70.42 | 74.97 | 69.10 | 62.35 | 43.03 | 37.75 | 24.94 | 48.77 | |||||||||||
1988 | 10.42 | 13.72 | 33.03 | b | 46.48 | 63.71 | 71.74 | a | 76.50 | 74.35 | 62.23 | 42.70 | a | 35.13 | 19.79 | 45.82 | ||||||||||
1989 | 20.67 | a | 10.31 | a | 25.74 | 44.67 | a | 57.29 | 65.05 | 73.34 | 69.85 | a | 60.57 | 49.68 | 29.22 | 9.92 | 43.03 | |||||||||
1990 | 25.06 | 20.54 | 35.31 | 48.27 | 55.16 | 67.88 | a | 71.47 | 70.15 | 63.20 | 48.23 | a | 38.37 | 17.42 | 46.75 | |||||||||||
1991 | 11.92 | 23.27 | 33.79 | 49.27 | 61.45 | 71.52 | 71.11 | 69.92 | 56.59 | a | 44.37 | 23.48 | 18.44 | 44.59 | ||||||||||||
1992 | 19.08 | a | 25.21 | 30.27 | 41.47 | 58.32 | 63.47 | 64.58 | 64.69 | 57.00 | 45.42 | 31.43 | 19.90 | 43.40 | ||||||||||||
1993 | 12.27 | a | 14.93 | 27.79 | 41.13 | 55.65 | 62.23 | 68.81 | 68.77 | 52.13 | 43.53 | 29.38 | a | 19.45 | a | 41.34 | ||||||||||
1994 | 1.39 | 9.02 | a | 32.12 | a | 43.25 | 57.21 | 68.12 | 68.15 | 66.15 | a | 62.27 | 49.69 | 35.71 | a | 21.98 | 42.92 | |||||||||
1995 | 14.82 | 14.78 | a | 30.57 | a | 38.57 | 55.50 | 71.07 | 70.94 | 72.35 | 57.40 | a | 46.56 | 24.07 | 14.61 | 42.60 | ||||||||||
1996 | 6.15 | 13.31 | 20.85 | 39.25 | 53.25 | a | 66.40 | 67.73 | 68.76 | 59.73 | 46.77 | a | 23.82 | 13.66 | 39.97 | |||||||||||
1997 | 8.08 | 18.55 | 27.35 | a | 42.13 | 50.60 | a | 67.86 | a | 69.37 | a | 65.50 | 60.52 | 47.61 | 28.55 | 26.02 | 42.68 | |||||||||
1998 | 17.85 | 30.93 | 30.47 | b | 48.91 | a | 62.77 | a | 64.27 | 70.73 | 69.56 | 64.20 | 48.43 | a | 36.03 | 21.95 | 47.18 | |||||||||
1999 | 8.65 | 24.91 | 31.53 | 47.08 | 59.37 | a | 66.15 | 73.56 | 67.13 | 58.05 | 45.27 | a | 37.57 | 21.35 | 45.05 | |||||||||||
2000 | 11.08 | 22.55 | 38.05 | ----- | z | 58.26 | 64.18 | 71.35 | u | 68.47 | 57.93 | 49.53 | 31.02 | 5.43 | a | 40.65 | b | |||||||||
2001 | 16.43 | a | 9.44 | a | 26.06 | 46.40 | 57.21 | 65.80 | 71.06 | 70.50 | 57.37 | 44.60 | 42.67 | 25.97 | a | 44.46 | ||||||||||
2002 | 21.03 | 23.82 | 21.98 | 42.65 | 51.76 | 67.92 | 74.06 | 67.79 | 61.33 | 40.72 | a | 30.17 | 22.32 | 43.80 | ||||||||||||
2003 | 11.98 | 10.79 | 27.97 | 43.67 | 55.60 | 64.53 | 69.56 | 71.55 | 59.80 | 46.35 | 30.63 | 22.11 | 42.88 | |||||||||||||
2004 | 8.47 | 17.66 | 31.35 | 46.42 | 53.84 | 62.78 | 68.44 | 62.03 | 62.93 | 48.05 | 36.13 | 18.71 | 43.07 | |||||||||||||
2005 | 12.39 | 22.11 | 25.94 | 49.55 | 55.12 | a | 69.50 | 72.10 | 68.23 | 63.14 | a | 49.16 | 33.93 | 16.97 | 44.84 | |||||||||||
2006 | 26.05 | 16.61 | 30.95 | 49.83 | 58.24 | 67.27 | 74.92 | 69.31 | 55.92 | 42.00 | 34.45 | 25.97 | 45.96 | |||||||||||||
2007 | 17.82 | 10.04 | 33.84 | 43.83 | 60.02 | 68.53 | 70.84 | 68.85 | 61.25 | 51.87 | 32.20 | 14.13 | 44.44 | |||||||||||||
2008 | 10.82 | 10.16 | 22.48 | a | 41.45 | 52.82 | 65.35 | 70.34 | 67.26 | 60.45 | 46.45 | 32.55 | 10.53 | 40.89 | ||||||||||||
2009 | 3.23 | 17.86 | 28.69 | 43.80 | 56.10 | 64.02 | 64.63 | 65.81 | 62.17 | 41.21 | 39.07 | 16.63 | 41.93 | |||||||||||||
2010 | 11.58 | 16.54 | 36.85 | 51.03 | 57.60 | 65.73 | 72.08 | 71.19 | 56.20 | 48.74 | 32.47 | 13.35 | 44.45 | |||||||||||||
2011 | 8.52 | 14.84 | 25.11 | 41.68 | 54.86 | c | 65.27 | 74.26 | 68.74 | 57.75 | 49.71 | 35.64 | a | 22.81 | 43.26 | |||||||||||
2012 | 18.12 | a | 24.48 | 44.12 | a | 45.55 | 61.27 | 67.67 | 75.73 | 68.07 | b | 58.77 | 43.33 | a | 34.00 | 22.61 | 46.98 | |||||||||
2013 | 13.31 | 14.98 | a | 21.63 | 36.32 | 54.52 | 65.20 | 71.06 | 69.19 | 61.60 | 46.00 | 29.05 | 9.05 | 40.99 | ||||||||||||
2014 | 3.32 | 3.50 | 19.90 | a | 38.68 | 55.79 | 68.05 | 68.06 | 68.58 | 58.05 | 45.16 | 23.35 | 22.95 | 39.62 | ||||||||||||
2015 | 12.87 | 5.98 | 30.21 | 45.47 | 57.19 | 65.65 | 69.77 | 66.03 | 64.42 | 47.77 | 38.72 | 29.82 | 44.49 | |||||||||||||
2016 | 12.29 | 20.02 | 37.10 | 44.28 | 57.11 | 67.37 | 70.68 | 69.87 | 62.50 | a | 49.50 | 40.67 | 18.17 | b | 45.80 | |||||||||||
2017 | 16.68 | 25.68 | 29.11 | 45.93 | 55.03 | a | 66.43 | 70.34 | 64.76 | 62.37 | 48.92 | 29.08 | 15.40 | 44.14 | ||||||||||||
2018 | 10.98 | 10.46 | a | 28.94 | 32.95 | 63.76 | 68.38 | 70.74 | 68.95 | 61.30 | 42.34 | 25.25 | 22.37 | 42.20 | ||||||||||||
2019 | 12.16 | 9.66 | 23.42 | 43.03 | 52.57 | a | 65.43 | 72.34 | 66.94 | 61.97 | 43.35 | 27.13 | 19.00 | 41.42 | ||||||||||||
2020 | 17.45 | 15.79 | 32.90 | a | 40.57 | b | 55.50 | 67.62 | 72.72 | a | 69.44 | 57.58 | 40.06 | 36.92 | 22.60 | 44.10 | ||||||||||
2021 | 18.56 | 9.61 | a | 37.39 | 44.58 | 56.00 | 71.92 | 70.92 | a | 68.84 | 60.67 | 52.98 | 33.20 | 21.19 | 45.49 | |||||||||||
2022 | 5.05 | 11.25 | 27.27 | a | 38.34 | b | 57.79 | 66.97 | 70.71 | 68.35 | 59.62 | b | 46.65 | 32.85 | 14.69 | 41.63 | ||||||||||
2023 | 19.88 | c | 16.52 | 26.02 | 42.55 | 58.48 | 69.13 | 69.23 | 68.73 | 63.60 | 48.76 | 33.32 | 30.71 | 45.58 | ||||||||||||
2024 | 19.81 | 29.69 | 33.61 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.70 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.30 | 16.82 | 29.44 | 44.42 | 56.75 | 66.15 | 70.83 | 68.32 | 59.49 | 47.37 | 32.34 | 18.38 | 43.51 | |||||||||||||
S.D. | 5.69 | 5.90 | 5.35 | 4.02 | 3.39 | 2.75 | 2.55 | 2.37 | 2.53 | 3.50 | 4.28 | 5.48 | 1.89 | |||||||||||||
SKEW | -0.10 | 0.37 | 0.38 | -0.21 | 0.20 | -0.27 | -0.11 | -0.06 | -0.20 | 0.15 | -0.37 | -0.32 | 0.01 | |||||||||||||
MAX | 26.05 | 30.93 | 44.12 | 52.95 | 64.06 | 71.92 | 76.50 | 74.35 | 65.55 | 57.32 | 42.67 | 30.71 | 48.77 | |||||||||||||
MIN | -1.60 | 3.50 | 19.90 | 32.95 | 50.40 | 59.35 | 64.58 | 62.03 | 52.13 | 40.06 | 23.07 | 5.43 | 39.62 | |||||||||||||
YRS | 79 | 79 | 79 | 77 | 75 | 76 | 74 | 75 | 78 | 78 | 78 | 78 | 65 |