YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | 52.81 | v | 53.76 | 63.87 | 78.94 | 72.71 | 63.62 | a | 46.82 | a | 26.57 | a | 18.19 | 53.06 | d | |||||
1936 | 0.10 | -4.36 | a | 30.92 | a | 41.00 | 63.17 | d | 66.47 | a | 81.74 | 74.66 | 66.18 | 46.25 | a | 30.22 | a | 22.94 | d | 43.27 | ||||||
1937 | 2.24 | 13.78 | a | 26.73 | 41.62 | 60.05 | a | 64.89 | b | 75.27 | 76.55 | 63.12 | 46.18 | 30.33 | 14.30 | a | 42.92 | |||||||||
1938 | 12.18 | 16.82 | 36.18 | 46.57 | 55.11 | 68.18 | 74.11 | 74.66 | 66.02 | 57.87 | a | 30.20 | 24.09 | b | 46.83 | |||||||||||
1939 | 19.63 | 9.04 | 31.45 | 44.37 | 65.73 | a | 69.08 | 74.95 | 71.08 | 65.45 | 48.48 | a | 39.55 | 29.87 | 47.39 | |||||||||||
1940 | 6.37 | 18.52 | a | 24.92 | 42.50 | 56.00 | 67.30 | 74.69 | 67.68 | 65.03 | 55.52 | 26.75 | b | 23.74 | 44.09 | |||||||||||
1941 | 16.92 | 16.04 | 28.58 | a | 49.27 | 62.42 | 66.93 | 72.69 | 71.37 | 62.02 | 50.32 | 34.87 | 25.84 | 46.44 | ||||||||||||
1942 | 20.95 | 20.45 | 34.19 | 50.97 | 54.24 | 64.92 | 70.27 | 69.44 | 55.90 | 49.06 | 33.67 | 14.55 | 44.88 | |||||||||||||
1943 | 5.50 | 20.93 | 24.53 | 45.40 | 53.81 | 67.65 | 73.76 | 70.47 | 56.75 | 48.98 | 29.27 | 23.63 | 43.39 | |||||||||||||
1944 | 27.47 | 19.81 | 23.94 | 41.17 | 59.86 | b | 68.42 | 70.50 | 68.85 | 60.63 | 50.95 | 35.57 | 20.95 | 45.68 | ||||||||||||
1945 | 17.19 | 21.02 | 39.82 | 43.60 | 52.29 | 61.27 | 70.71 | 70.74 | 59.65 | 50.45 | 30.75 | 11.69 | 44.10 | |||||||||||||
1946 | 15.67 | a | 18.12 | 40.82 | 51.30 | 54.68 | 67.05 | 72.37 | 68.26 | 59.82 | 49.16 | 31.00 | 21.55 | 45.82 | ||||||||||||
1947 | 22.58 | 13.36 | 27.89 | 40.52 | 52.47 | 63.17 | 72.89 | 77.16 | 62.15 | 56.10 | 26.08 | 17.15 | 44.29 | |||||||||||||
1948 | 10.79 | 14.33 | 22.36 | m | 50.12 | j | 58.22 | a | 65.43 | g | 74.08 | 71.56 | 66.25 | 49.74 | 33.22 | 18.40 | 44.07 | c | ||||||||
1949 | 11.31 | 13.77 | 29.61 | 47.55 | 62.19 | ----- | z | 75.08 | 74.29 | 59.08 | 51.08 | 39.90 | 19.61 | 43.95 | a | |||||||||||
1950 | 4.45 | 19.61 | 24.94 | 37.22 | 54.16 | 68.67 | 69.76 | 67.26 | 62.75 | 53.63 | 28.23 | 14.53 | 42.10 | |||||||||||||
1951 | 10.26 | 21.84 | 18.16 | 40.31 | a | 60.26 | 62.70 | 70.67 | a | 68.10 | 56.65 | 47.74 | 27.62 | 13.92 | a | 41.52 | ||||||||||
1952 | 12.11 | 23.33 | 22.66 | 48.60 | a | 58.08 | 70.12 | 73.21 | 70.10 | 64.18 | 46.15 | 35.87 | 23.07 | a | 45.62 | |||||||||||
1953 | 16.98 | 20.96 | 31.87 | 40.75 | 57.02 | 70.13 | 71.85 | 72.97 | 61.87 | 57.03 | 38.87 | 21.35 | 46.81 | |||||||||||||
1954 | 9.24 | 33.29 | 27.97 | 47.70 | 53.45 | 69.52 | 74.77 | 70.18 | 61.20 | 47.34 | 39.97 | 24.18 | a | 46.57 | ||||||||||||
1955 | 17.47 | 12.79 | 27.89 | 54.42 | 64.07 | b | 66.78 | 77.63 | 75.61 | 62.05 | 52.42 | 24.41 | a | 11.27 | 45.57 | |||||||||||
1956 | 12.05 | 14.83 | 26.77 | 41.25 | 58.68 | 73.38 | 69.11 | 70.60 | 60.12 | a | 57.45 | 33.37 | 25.34 | 45.25 | ||||||||||||
1957 | 9.98 | 21.84 | 31.15 | 46.05 | 56.55 | 66.77 | 77.16 | 69.79 | 59.00 | 48.71 | 32.67 | 26.87 | 45.54 | |||||||||||||
1958 | 22.52 | 14.55 | 29.63 | 46.12 | 61.11 | 62.67 | 70.29 | 72.13 | 64.08 | 52.47 | 35.10 | 15.79 | 45.54 | |||||||||||||
1959 | 9.44 | 12.91 | 34.47 | 45.02 | 58.82 | 71.85 | 73.40 | 75.24 | 62.45 | 42.97 | 23.28 | 29.50 | 44.95 | |||||||||||||
1960 | 12.39 | 15.90 | 16.65 | 45.30 | 56.38 | c | 65.75 | 72.69 | 71.69 | 63.57 | 51.06 | 35.15 | 18.00 | 43.71 | ||||||||||||
1961 | 15.23 | a | 22.93 | 34.77 | 39.70 | 54.70 | a | 69.37 | 70.95 | 72.95 | 60.40 | 50.66 | 33.08 | 14.65 | 44.95 | |||||||||||
1962 | 10.42 | 15.21 | 23.52 | 42.57 | 61.05 | 66.78 | 68.90 | 71.26 | 58.55 | 53.12 | a | 37.35 | 20.73 | 44.12 | ||||||||||||
1963 | 5.26 | 14.96 | 34.63 | 49.15 | 56.94 | 71.37 | 72.85 | 71.18 | a | 63.37 | 59.63 | 38.60 | a | 11.95 | 45.82 | |||||||||||
1964 | 21.37 | 23.24 | 23.60 | 46.48 | 62.00 | 69.30 | 75.19 | 67.26 | 59.82 | 50.24 | 33.47 | 11.97 | 45.33 | |||||||||||||
1965 | 8.61 | 11.82 | 17.18 | 42.78 | 59.60 | 68.03 | 72.03 | 69.71 | 51.83 | 52.29 | 31.75 | 27.16 | 42.73 | |||||||||||||
1966 | 2.03 | 13.18 | 35.66 | 40.63 | 54.26 | 68.98 | 77.87 | 68.60 | 60.45 | 48.15 | 27.80 | 17.52 | 42.93 | |||||||||||||
1967 | 16.21 | 10.18 | 31.37 | 43.87 | 53.03 | 66.60 | 70.68 | 69.19 | 60.67 | 47.10 | 32.08 | 20.45 | 43.45 | |||||||||||||
1968 | 13.48 | 13.47 | 38.19 | 47.30 | 53.24 | 68.18 | 71.35 | 69.95 | 60.22 | 48.73 | 34.55 | 15.37 | 44.50 | |||||||||||||
1969 | 4.55 | 17.52 | a | 19.45 | 46.63 | 59.44 | 61.58 | 72.26 | 73.48 | 62.13 | 44.26 | 33.12 | 20.76 | 42.93 | ||||||||||||
1970 | 4.19 | 16.41 | 25.13 | 44.10 | 58.44 | 70.67 | 73.85 | 71.11 | 61.38 | 47.47 | 30.27 | 15.26 | 43.19 | |||||||||||||
1971 | 7.81 | 17.29 | 29.81 | 47.78 | 56.16 | 70.95 | 69.08 | 71.53 | 61.42 | 51.87 | 32.35 | 15.68 | 44.31 | |||||||||||||
1972 | 8.61 | 11.91 | 28.11 | 40.97 | 60.40 | 67.15 | 70.37 | 70.66 | 59.18 | 45.15 | 31.70 | 13.37 | 42.30 | |||||||||||||
1973 | 18.32 | 21.89 | 38.52 | 44.60 | 57.06 | 70.95 | 73.15 | 75.10 | 60.22 | 54.81 | 34.23 | 15.42 | 47.02 | |||||||||||||
1974 | 11.94 | 18.39 | 29.94 | 46.60 | 54.89 | 67.17 | 76.95 | 67.69 | 57.63 | 50.27 | 33.45 | 23.42 | 44.86 | |||||||||||||
1975 | 16.66 | 14.07 | 23.15 | 37.77 | 60.98 | 66.95 | 76.45 | 70.21 | 57.22 | 50.77 | 33.78 | 17.97 | 43.83 | |||||||||||||
1976 | 11.05 | 26.10 | 29.92 | 49.15 | 56.47 | 70.15 | ----- | z | 72.19 | 60.12 | 42.83 | a | ----- | z | 12.32 | 43.03 | b | |||||||||
1977 | 0.63 | 21.95 | 34.10 | 50.92 | 65.90 | 68.07 | 72.65 | 64.55 | 60.28 | 45.74 | 29.33 | 13.34 | 43.95 | |||||||||||||
1978 | 1.52 | 8.04 | 28.26 | 42.53 | a | 57.76 | 66.47 | 70.10 | 71.34 | 67.67 | 50.13 | a | 19.85 | m | 15.15 | 43.54 | a | |||||||||
1979 | 1.47 | 5.45 | 25.39 | 35.68 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.77 | i | |||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.86 | a | ----- | z | 69.87 | a | 62.02 | 45.95 | a | 37.87 | 19.35 | a | 50.65 | f | ||
1981 | 19.11 | 24.50 | 37.08 | a | 51.07 | 57.98 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.58 | 14.85 | 34.60 | e | |||||
1982 | -3.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | 29.55 | k | 40.20 | b | 53.90 | a | 61.70 | o | ----- | z | ----- | z | 62.88 | d | 49.57 | c | 33.75 | b | 1.12 | a | 40.24 | f |
1984 | 15.32 | a | 29.10 | e | 24.47 | 46.48 | 56.48 | c | 69.14 | b | 72.63 | a | 74.10 | a | 56.43 | 49.46 | c | 35.64 | b | 16.70 | c | 45.50 | ||||
1985 | 11.93 | c | 16.98 | a | 36.42 | 51.05 | a | 63.21 | 65.00 | b | 71.18 | a | 66.31 | 56.89 | c | 47.02 | c | 21.79 | b | 8.58 | 43.03 | |||||
1986 | 19.50 | a | 14.15 | b | 34.52 | b | 46.96 | c | 58.65 | d | 68.46 | e | 73.55 | a | 66.21 | 59.50 | 48.88 | a | 27.18 | b | 26.43 | c | 45.33 | |||
1987 | 21.65 | 31.66 | 35.72 | b | 52.86 | b | 63.60 | 71.80 | 74.82 | a | 67.52 | 61.26 | a | 42.95 | a | 36.97 | 26.23 | e | 48.92 | |||||||
1988 | 11.96 | g | 12.07 | b | 33.10 | b | 47.38 | d | 65.84 | 74.83 | a | 76.67 | b | 72.41 | c | 58.50 | h | 43.06 | 31.93 | 21.52 | c | 47.88 | b | |||
1989 | 23.28 | a | 8.80 | e | 26.08 | 45.53 | 58.89 | 68.69 | a | 75.44 | 71.69 | 61.35 | 50.27 | 27.94 | c | 12.08 | 44.17 | |||||||||
1990 | 28.11 | 23.09 | 34.37 | a | 48.27 | 57.02 | a | 70.12 | 70.71 | 69.85 | 66.35 | 49.15 | 36.20 | 17.07 | a | 47.52 | ||||||||||
1991 | 13.63 | 28.52 | a | 33.55 | 49.40 | 61.58 | 72.63 | 71.95 | 71.29 | 60.05 | 46.40 | a | 25.00 | 25.26 | 46.60 | |||||||||||
1992 | 23.94 | 27.43 | a | 35.55 | 42.77 | 60.75 | a | 65.60 | 64.89 | 66.00 | a | 60.18 | 47.82 | 29.52 | 17.87 | a | 45.19 | |||||||||
1993 | 12.79 | 14.70 | 29.00 | 43.41 | a | 57.02 | 64.78 | 70.75 | a | 70.56 | 56.33 | a | 46.56 | 29.40 | 20.93 | a | 43.02 | |||||||||
1994 | 2.44 | 11.69 | a | 35.29 | b | 45.87 | 63.39 | 70.59 | a | 69.70 | a | 67.61 | 63.95 | a | 52.16 | 37.33 | a | 23.97 | 45.33 | |||||||
1995 | 18.82 | 21.17 | a | 32.60 | 40.28 | 55.47 | a | 68.74 | a | 73.26 | 73.53 | 59.50 | b | 47.13 | 27.05 | 18.58 | 44.68 | |||||||||
1996 | 5.60 | a | 18.89 | b | 25.85 | 41.93 | 54.97 | 70.22 | 69.94 | 70.76 | 60.05 | 49.87 | a | 22.67 | 10.53 | 41.77 | ||||||||||
1997 | 9.29 | c | 19.31 | a | 29.48 | 42.48 | 54.50 | a | 72.32 | 72.21 | 69.90 | 64.67 | 50.77 | a | 27.88 | a | 27.43 | a | 45.02 | |||||||
1998 | 16.42 | a | 31.18 | 26.95 | a | 49.57 | 65.40 | 66.43 | 72.94 | 72.35 | 67.91 | a | 52.09 | b | 35.47 | 25.31 | 48.50 | |||||||||
1999 | 12.55 | 29.16 | 34.98 | 47.22 | 60.03 | 68.67 | a | 75.82 | 71.52 | 60.29 | a | 49.27 | 43.12 | a | 26.56 | 48.27 | ||||||||||
2000 | 15.59 | b | 29.22 | 40.31 | 45.72 | 61.40 | 67.05 | 71.92 | 71.50 | 62.33 | 51.94 | 28.33 | a | 6.25 | a | 45.96 | ||||||||||
2001 | 20.77 | a | 10.74 | a | 25.18 | 46.80 | 60.27 | 69.55 | a | 75.26 | 72.05 | 61.20 | 49.17 | a | 45.64 | a | 24.95 | a | 46.80 | |||||||
2002 | 24.03 | 29.52 | a | 20.60 | 45.86 | a | 55.33 | a | 72.57 | 77.39 | 70.69 | 64.45 | 41.07 | a | 33.47 | 26.43 | a | 46.78 | ||||||||
2003 | 16.47 | 15.28 | a | 30.81 | 47.84 | a | 56.61 | 67.10 | a | 73.05 | 73.26 | 60.93 | 51.48 | b | 30.82 | 24.79 | 45.70 | |||||||||
2004 | 11.24 | 20.93 | a | 37.53 | a | 50.79 | d | 56.03 | 64.85 | 70.60 | 65.06 | 65.91 | a | 50.56 | 37.97 | 26.48 | e | 46.50 | ||||||||
2005 | 14.02 | d | 26.87 | a | 31.83 | b | 50.82 | 56.94 | 71.90 | a | 74.95 | 70.05 | 67.67 | 50.50 | 35.03 | 19.60 | a | 47.51 | ||||||||
2006 | 28.60 | 18.52 | 31.85 | 51.58 | 60.42 | 70.13 | 76.56 | 70.82 | 58.68 | 46.23 | 35.40 | a | 29.77 | a | 48.21 | |||||||||||
2007 | 18.78 | a | 12.36 | 37.77 | a | 44.15 | 62.98 | a | 69.95 | a | 74.70 | a | 69.98 | a | 64.47 | 53.89 | 34.10 | 16.38 | a | 46.63 | ||||||
2008 | 13.82 | 15.86 | 29.08 | a | 41.92 | 56.61 | 67.83 | 73.92 | 71.02 | a | 62.43 | 49.11 | 33.73 | 12.13 | 43.96 | |||||||||||
2009 | 8.68 | 19.07 | 29.32 | 43.53 | 57.56 | 66.12 | 67.45 | 68.23 | 64.83 | 41.52 | 41.48 | 13.95 | 43.48 | |||||||||||||
2010 | 9.47 | 11.79 | 35.10 | 52.63 | 58.42 | 68.28 | 73.15 | 74.85 | 59.65 | 52.60 | 32.74 | a | 12.40 | 45.09 | ||||||||||||
2011 | 7.55 | 15.61 | 23.29 | 42.05 | 53.38 | a | 67.14 | a | 77.77 | 71.24 | 60.78 | 53.16 | 36.58 | 27.00 | 44.63 | |||||||||||
2012 | 23.45 | 26.29 | 45.37 | 49.97 | 62.89 | 72.07 | 79.37 | 71.19 | 62.62 | a | 46.19 | 36.25 | 19.03 | 49.56 | ||||||||||||
2013 | 16.61 | 16.16 | 23.31 | 35.78 | 56.13 | 67.27 | 73.15 | 72.06 | 67.53 | 48.48 | 31.83 | 11.10 | 43.28 | |||||||||||||
2014 | 9.68 | 10.61 | 25.39 | 42.45 | 57.61 | 69.33 | 70.27 | a | 70.85 | 63.15 | 50.77 | 24.72 | 23.40 | 43.19 | ||||||||||||
2015 | 19.71 | 11.25 | 36.42 | 49.05 | 58.65 | 69.93 | 74.23 | 70.16 | 69.03 | 52.27 | 39.80 | 25.65 | 48.01 | |||||||||||||
2016 | 13.56 | 23.21 | 38.63 | 47.72 | 60.79 | 72.47 | 73.84 | 72.23 | 64.23 | 50.97 | 43.24 | a | 15.11 | 48.00 | ||||||||||||
2017 | 15.66 | 29.93 | 30.98 | 47.26 | a | 57.98 | 70.92 | 74.97 | 68.11 | 64.73 | 50.00 | 31.55 | 18.40 | 46.71 | ||||||||||||
2018 | 14.34 | b | 9.96 | 28.27 | 32.97 | 66.56 | 72.42 | 74.70 | c | 73.12 | a | 65.67 | 45.65 | a | 27.40 | 24.44 | 44.62 | |||||||||
2019 | 13.05 | 3.74 | a | 24.60 | 46.57 | 53.38 | b | 69.75 | 73.98 | a | 69.37 | 65.37 | 44.07 | a | 28.85 | 19.23 | 42.66 | |||||||||
2020 | 14.24 | 18.19 | 33.11 | 42.33 | 55.48 | 73.45 | 74.89 | 72.97 | 61.12 | 41.45 | 37.88 | 23.98 | 45.76 | |||||||||||||
2021 | 22.66 | 10.62 | 38.11 | 44.07 | 58.45 | 74.67 | 74.90 | 73.48 | 66.35 | 53.50 | 36.23 | 22.71 | 47.98 | |||||||||||||
2022 | 9.68 | 13.41 | a | 30.66 | 38.10 | 58.27 | 71.75 | 75.02 | 71.29 | 64.80 | 49.95 | 32.82 | 15.18 | 44.24 | ||||||||||||
2023 | 16.74 | 17.59 | 21.90 | 41.00 | 62.98 | 73.33 | 71.82 | 73.06 | 67.15 | 50.02 | 37.08 | 31.82 | 47.04 | |||||||||||||
2024 | 16.68 | 31.34 | 33.53 | 47.03 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.18 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.58 | 17.88 | 30.24 | 45.19 | 58.36 | 68.59 | 73.27 | 70.93 | 61.96 | 49.42 | 32.90 | 19.35 | 45.18 | |||||||||||||
S.D. | 6.65 | 6.96 | 5.86 | 4.19 | 3.55 | 2.92 | 2.82 | 2.52 | 3.24 | 3.73 | 4.87 | 5.98 | 1.82 | |||||||||||||
SKEW | 0.02 | 0.04 | -0.07 | -0.23 | 0.39 | -0.22 | 0.12 | -0.09 | -0.17 | 0.09 | 0.03 | -0.24 | 0.21 | |||||||||||||
MAX | 28.60 | 33.29 | 45.37 | 54.42 | 66.56 | 74.83 | 81.74 | 77.16 | 69.03 | 59.63 | 45.64 | 31.82 | 49.56 | |||||||||||||
MIN | 0.10 | -4.36 | 16.65 | 32.97 | 52.29 | 61.27 | 64.89 | 64.55 | 51.83 | 41.07 | 21.79 | 1.12 | 41.52 | |||||||||||||
YRS | 85 | 86 | 85 | 84 | 86 | 83 | 83 | 85 | 85 | 86 | 85 | 87 | 78 |