YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 67.23 | 75.48 | c | 84.10 | ----- | z | ----- | z | 62.26 | 29.90 | 26.00 | 57.49 | f | |||||
1941 | 20.16 | 19.14 | 32.13 | 55.63 | 70.42 | 74.57 | 82.03 | a | 78.53 | a | 67.97 | 55.58 | 39.87 | 29.32 | 52.11 | |||||||||||
1942 | 26.84 | 23.46 | 40.77 | 59.83 | 60.52 | ----- | z | 77.84 | 76.35 | 63.57 | 56.23 | 37.63 | 18.19 | 49.20 | a | |||||||||||
1943 | 10.26 | 23.11 | 26.19 | 53.63 | 62.16 | 73.47 | 83.94 | 79.26 | 65.60 | 58.65 | 32.62 | a | 29.52 | 49.87 | ||||||||||||
1944 | 31.19 | 23.72 | 28.48 | 49.00 | a | 66.90 | 75.60 | 77.77 | 79.19 | 67.73 | 60.19 | 38.17 | 24.73 | a | 51.89 | |||||||||||
1945 | 16.03 | 22.50 | 43.87 | 48.43 | 59.84 | 68.60 | 77.58 | 78.32 | 66.03 | 56.29 | 32.80 | 15.00 | 48.78 | |||||||||||||
1946 | 19.03 | 21.00 | 43.84 | 58.93 | 61.55 | 74.73 | 79.94 | 77.13 | 66.17 | 54.52 | 37.03 | 21.50 | a | 51.28 | ||||||||||||
1947 | 26.06 | 18.29 | 31.16 | 46.17 | 60.06 | 70.57 | 81.87 | 85.71 | 69.93 | 67.06 | 29.03 | 21.61 | 50.63 | |||||||||||||
1948 | 15.42 | 18.34 | 30.06 | 55.53 | 68.26 | 74.33 | 83.42 | 80.19 | 76.30 | 59.48 | 36.60 | 23.35 | 51.78 | |||||||||||||
1949 | 14.65 | 18.54 | 30.84 | 57.67 | 70.87 | 77.37 | 81.84 | 83.29 | 66.73 | 57.13 | a | 41.63 | 23.58 | 52.01 | ||||||||||||
1950 | 7.74 | 21.50 | 28.39 | 38.50 | 61.48 | 77.53 | 77.81 | 76.71 | 71.30 | 58.32 | 31.47 | 16.52 | 47.27 | |||||||||||||
1951 | 11.81 | 22.79 | 24.68 | 46.27 | 68.68 | 70.13 | 79.35 | 73.84 | 62.87 | 52.97 | 29.03 | 17.23 | 46.64 | |||||||||||||
1952 | 16.03 | 25.72 | 28.19 | 56.00 | 67.97 | 77.00 | 80.58 | 77.39 | 72.77 | 53.90 | 41.57 | 26.74 | 51.99 | |||||||||||||
1953 | 19.84 | 22.89 | 34.94 | 46.43 | 65.42 | 74.80 | 80.52 | 80.35 | 70.43 | 65.68 | 43.60 | 24.87 | 52.48 | |||||||||||||
1954 | 11.16 | 32.86 | 30.35 | 50.80 | 60.13 | 75.40 | 80.06 | 77.48 | 64.97 | 52.42 | 43.23 | 27.61 | 50.54 | |||||||||||||
1955 | 19.13 | 18.00 | 30.39 | 63.23 | 72.52 | b | 75.13 | 84.83 | a | 82.13 | a | 70.07 | b | 59.19 | 28.72 | a | 16.10 | a | 51.62 | |||||||
1956 | 16.55 | 19.32 | a | 29.68 | 46.40 | 63.97 | 80.40 | 76.16 | 77.90 | 68.83 | a | 64.42 | 37.87 | 28.07 | a | 50.80 | ||||||||||
1957 | 12.87 | 24.54 | 34.61 | 52.13 | 64.06 | 72.73 | 83.29 | 76.03 | 65.77 | 53.55 | 36.03 | 29.32 | 50.41 | |||||||||||||
1958 | 24.87 | 20.57 | 37.16 | 54.80 | 69.13 | 68.90 | 76.35 | 79.13 | 70.00 | 59.74 | 39.47 | 19.45 | 51.63 | |||||||||||||
1959 | 13.81 | 21.93 | 41.35 | 53.90 | 66.39 | 76.90 | 83.45 | 82.52 | 69.43 | 48.55 | 28.97 | 33.06 | 51.69 | |||||||||||||
1960 | 18.94 | 21.93 | 25.39 | 49.13 | 66.55 | 72.03 | 82.52 | 80.13 | 69.53 | 59.23 | 39.80 | 22.61 | 50.65 | |||||||||||||
1961 | 20.45 | 31.29 | 42.23 | 45.47 | 64.16 | 80.60 | 79.35 | 83.26 | 66.50 | 58.77 | 37.80 | 19.71 | 52.47 | |||||||||||||
1962 | 14.00 | 18.04 | 30.52 | 49.73 | 65.16 | 74.43 | 76.06 | 80.23 | 66.83 | 59.29 | 42.77 | 26.26 | 50.28 | |||||||||||||
1963 | 9.81 | 21.71 | 42.42 | 55.30 | 64.68 | 78.67 | 82.42 | 79.48 | 71.30 | 68.06 | 44.17 | 16.71 | 52.89 | |||||||||||||
1964 | 25.65 | 30.31 | 30.65 | 53.47 | 72.03 | 77.27 | 85.32 | 76.23 | 66.10 | 57.35 | 38.17 | 16.84 | 52.45 | |||||||||||||
1965 | 13.10 | 19.50 | 24.52 | 48.33 | 66.00 | 74.13 | 78.48 | 78.10 | 56.43 | 59.26 | 37.60 | 29.74 | 48.77 | |||||||||||||
1966 | 6.58 | 19.93 | 39.68 | 45.13 | 63.48 | 76.90 | 85.74 | 75.55 | 70.23 | 56.42 | 33.27 | 22.77 | 49.64 | |||||||||||||
1967 | 20.42 | 15.89 | 34.55 | 50.00 | 61.13 | 73.27 | 80.39 | 78.29 | 69.90 | 53.97 | 37.33 | 24.39 | 49.96 | |||||||||||||
1968 | 18.68 | 20.76 | 47.57 | a | 55.37 | 61.77 | 75.33 | 80.39 | 79.61 | 69.33 | 56.94 | 37.70 | 17.97 | 51.78 | ||||||||||||
1969 | 11.48 | 22.82 | 29.77 | 54.77 | 67.71 | 68.33 | 80.81 | 85.26 | 70.53 | 49.68 | 38.43 | 24.29 | 50.32 | |||||||||||||
1970 | 10.68 | 23.46 | 29.90 | 49.20 | 64.26 | 78.80 | 86.00 | 82.00 | 70.80 | 54.87 | 33.60 | 20.74 | 50.36 | |||||||||||||
1971 | 9.68 | 21.43 | 33.45 | 55.30 | 65.52 | 78.67 | 76.87 | 80.00 | 69.00 | 56.58 | 36.50 | 21.10 | 50.34 | |||||||||||||
1972 | 12.00 | 16.45 | 32.52 | 47.90 | 68.19 | 77.73 | 78.52 | 78.65 | 68.40 | 52.39 | 33.97 | 15.52 | 48.52 | |||||||||||||
1973 | 23.06 | 26.43 | 44.10 | 53.63 | 66.13 | 78.67 | 80.90 | 80.48 | 67.23 | 62.13 | 38.13 | 19.84 | 53.40 | |||||||||||||
1974 | 17.45 | 25.46 | 31.61 | 53.53 | 60.26 | 76.80 | 86.45 | 75.87 | 66.17 | 59.26 | 37.97 | 28.87 | 51.64 | |||||||||||||
1975 | 21.65 | 19.61 | 28.16 | 41.03 | 70.42 | 75.20 | 86.06 | 78.26 | 64.83 | 59.10 | 41.40 | 23.58 | 50.77 | |||||||||||||
1976 | 17.42 | 31.72 | 35.71 | 61.07 | 68.97 | 81.00 | 85.00 | 84.10 | 73.70 | 51.74 | 31.97 | 18.87 | 53.44 | |||||||||||||
1977 | 6.23 | 27.64 | 41.48 | 61.50 | 76.13 | 76.40 | 82.90 | 73.81 | 65.80 | 56.48 | 34.17 | 15.87 | 51.53 | |||||||||||||
1978 | 11.00 | 17.25 | 35.39 | 49.83 | 68.87 | 75.80 | 79.74 | 81.55 | 75.53 | 57.65 | 35.77 | 18.23 | 50.55 | |||||||||||||
1979 | 6.06 | 14.07 | 31.35 | 44.40 | 60.84 | 74.63 | 79.52 | 75.00 | 72.57 | 54.03 | 35.83 | 31.71 | 48.34 | |||||||||||||
1980 | 18.74 | 20.55 | 30.97 | 59.57 | 72.39 | 75.20 | 82.35 | 76.52 | 66.83 | 51.13 | 42.53 | 23.26 | 51.67 | |||||||||||||
1981 | 24.61 | 29.36 | 46.23 | 57.30 | 65.87 | 73.27 | 79.94 | 76.61 | 68.47 | 52.23 | 44.37 | 19.77 | 53.17 | |||||||||||||
1982 | 6.26 | 21.11 | 31.52 | 50.27 | 67.71 | 71.47 | 82.10 | 79.81 | 66.27 | 54.48 | 33.70 | 29.32 | 49.50 | |||||||||||||
1983 | 24.13 | 29.61 | 37.10 | 51.13 | 64.39 | 75.17 | 84.87 | 85.06 | 68.60 | 53.19 | 35.50 | 7.06 | 51.32 | |||||||||||||
1984 | 17.97 | 33.18 | a | 31.68 | 55.17 | 65.94 | 74.30 | 81.94 | 82.06 | 64.10 | 55.10 | 38.00 | 20.48 | 51.66 | ||||||||||||
1985 | 15.74 | 21.79 | 40.03 | 59.59 | a | 70.87 | 71.27 | 81.03 | 73.03 | 63.57 | 55.23 | 26.73 | 12.68 | 49.30 | ||||||||||||
1986 | 22.39 | 19.14 | 39.10 | 55.00 | 67.23 | 77.00 | 80.45 | 74.68 | 63.87 | 55.19 | 32.37 | 29.97 | 51.36 | |||||||||||||
1987 | 25.97 | 36.29 | 41.97 | 65.83 | 72.13 | 80.73 | 83.87 | 77.23 | 70.97 | 51.55 | 43.17 | 26.26 | 56.33 | |||||||||||||
1988 | 16.48 | 18.86 | 37.52 | 57.83 | 77.52 | 86.30 | 88.74 | 82.52 | 68.76 | a | 52.58 | 35.48 | a | 25.23 | 53.98 | |||||||||||
1989 | 26.13 | 12.96 | 30.03 | 51.10 | 68.55 | 76.43 | 86.84 | 80.32 | 69.80 | 59.52 | 33.57 | 14.94 | 50.85 | |||||||||||||
1990 | 30.97 | 28.54 | 40.39 | 54.57 | 64.74 | 76.23 | 78.65 | 78.61 | 71.93 | 56.10 | 42.07 | 21.97 | 53.73 | |||||||||||||
1991 | 17.84 | 31.68 | 39.19 | 56.50 | 69.84 | 78.63 | 78.97 | 80.10 | 66.47 | 52.94 | 29.47 | 26.16 | 52.31 | |||||||||||||
1992 | 26.06 | 30.93 | 39.23 | 49.50 | 70.94 | 71.93 | 72.23 | 74.03 | 69.57 | 54.35 | 30.90 | 20.77 | 50.87 | |||||||||||||
1993 | 18.45 | 20.64 | 34.81 | 52.00 | 64.81 | 70.23 | 75.65 | 77.03 | 63.87 | 53.39 | 32.50 | 23.55 | 48.91 | |||||||||||||
1994 | 5.52 | 16.86 | 38.10 | 53.57 | 70.94 | 77.60 | 77.23 | 75.35 | 70.70 | 56.84 | 41.97 | 27.61 | 51.02 | |||||||||||||
1995 | 19.77 | 23.18 | 37.13 | 45.50 | 64.19 | 80.07 | 79.87 | 80.03 | 67.77 | 50.74 | 30.10 | ----- | z | 52.58 | a | |||||||||||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.87 | 80.39 | 67.79 | a | 55.26 | 26.73 | 14.45 | 53.75 | f | |||||
1997 | 11.97 | 23.04 | 30.80 | a | 49.34 | a | 61.10 | 79.52 | g | 76.07 | a | 75.50 | a | 71.30 | 57.35 | 29.79 | a | 29.52 | 46.89 | a | ||||||
1998 | 21.58 | 33.29 | 33.35 | 60.03 | 72.20 | a | 71.60 | 79.06 | 81.32 | 76.00 | 56.94 | 37.73 | 29.55 | 54.39 | ||||||||||||
1999 | 17.63 | d | 30.00 | 39.23 | 53.50 | 66.03 | 74.23 | 82.74 | 77.61 | 65.70 | 55.84 | 48.53 | 31.63 | a | 53.56 | |||||||||||
2000 | 19.55 | 30.83 | 46.39 | 53.17 | 68.10 | 72.13 | 78.35 | 79.65 | 70.57 | 58.06 | 32.28 | a | 9.32 | 51.53 | ||||||||||||
2001 | 23.84 | 14.19 | a | 30.26 | 51.83 | 66.90 | 75.40 | 81.65 | 82.39 | 67.30 | 54.84 | 49.23 | 28.26 | 52.17 | ||||||||||||
2002 | 27.06 | 34.14 | 26.03 | b | 48.67 | 62.42 | 77.50 | 82.55 | 76.84 | 71.50 | 43.58 | 36.73 | 29.10 | 51.34 | ||||||||||||
2003 | 18.68 | 20.71 | 36.32 | 54.73 | 65.00 | 73.97 | 80.19 | 83.39 | 69.07 | 58.77 | 33.20 | 26.77 | 51.73 | |||||||||||||
2004 | 13.61 | 23.79 | 41.93 | a | 57.70 | 62.26 | 70.87 | 77.13 | 71.74 | 73.27 | 56.00 | 42.67 | 27.03 | 51.50 | ||||||||||||
2005 | 16.97 | 28.50 | 37.16 | 58.90 | 61.68 | 76.50 | 82.58 | 77.55 | 73.17 | 57.23 | 39.87 | 21.84 | 52.66 | |||||||||||||
2006 | 30.52 | 20.71 | 36.00 | 59.97 | 67.48 | 78.13 | 87.06 | 80.10 | 65.60 | 51.84 | 42.27 | 32.74 | 54.37 | |||||||||||||
2007 | 23.26 | 17.39 | 40.13 | 50.87 | 71.52 | 79.13 | 84.29 | 77.61 | 71.97 | 57.90 | 38.07 | 18.52 | 52.55 | |||||||||||||
2008 | 16.61 | 18.93 | 30.94 | 49.57 | 63.87 | 72.77 | 80.74 | 80.45 | 69.70 | 55.06 | 38.57 | 17.77 | 49.58 | |||||||||||||
2009 | 12.32 | 22.71 | 33.42 | 52.07 | 68.26 | 73.03 | 77.00 | 76.13 | 73.43 | 45.42 | 46.87 | 18.06 | 49.89 | |||||||||||||
2010 | 16.35 | 22.32 | 44.19 | 62.57 | 66.24 | b | 74.53 | 81.68 | 79.97 | 64.50 | 59.45 | 37.77 | 17.64 | f | 55.42 | a | ||||||||||
2011 | 13.57 | h | 20.79 | 30.26 | 49.63 | c | 63.39 | 73.23 | 83.68 | 78.03 | 69.80 | 60.58 | 41.57 | 32.32 | 54.84 | a | ||||||||||
2012 | 28.03 | 30.55 | 51.87 | 56.60 | 69.29 | 78.33 | 86.48 | 79.42 | 73.23 | 53.03 | 39.17 | 24.87 | 55.91 | |||||||||||||
2013 | 20.29 | 21.64 | 28.06 | 40.53 | 63.65 | 74.27 | 80.42 | 81.74 | 73.50 | 51.87 | 37.37 | 13.90 | a | 48.94 | ||||||||||||
2014 | 15.26 | 13.46 | 29.94 | 47.87 | 65.07 | a | 75.03 | a | 77.55 | 77.35 | 68.23 | 56.19 | 28.30 | 26.58 | 48.40 | |||||||||||
2015 | 22.94 | 16.82 | 41.00 | 57.60 | 64.77 | 76.33 | 80.29 | 77.35 | 75.77 | 58.71 | 44.70 | 30.61 | 53.91 | |||||||||||||
2016 | 20.77 | 29.34 | 46.81 | 53.83 | 69.65 | 77.80 | 80.84 | 79.16 | 70.23 | 57.68 | 48.07 | 22.45 | 54.72 | |||||||||||||
2017 | 22.06 | 34.04 | 39.81 | 55.40 | 65.71 | 76.97 | 80.35 | 74.16 | 72.50 | 57.13 | 37.17 | 22.45 | 53.15 | |||||||||||||
2018 | 21.78 | d | 21.07 | a | 36.42 | 46.23 | 78.13 | 80.87 | 82.61 | 80.77 | 71.67 | 51.16 | 31.93 | 31.68 | 52.86 | |||||||||||
2019 | 17.65 | 16.18 | 33.58 | 54.53 | 65.65 | 79.83 | 83.19 | 78.45 | 70.93 | b | 49.19 | 33.03 | 24.87 | 50.59 | ||||||||||||
2020 | 21.39 | 25.03 | 39.19 | 51.67 | 64.84 | 81.00 | 82.35 | 79.35 | 68.07 | 48.16 | 43.57 | 29.84 | 52.87 | |||||||||||||
2021 | 25.87 | 13.64 | 45.26 | 53.07 | 68.29 | 84.60 | 84.90 | 82.10 | 74.97 | 60.71 | 41.20 | 26.16 | 55.06 | |||||||||||||
2022 | 15.58 | 18.39 | 33.52 | 42.97 | 66.43 | a | 80.00 | a | 81.84 | 79.39 | 74.23 | 59.35 | 36.53 | 19.10 | 50.61 | |||||||||||
2023 | 21.48 | 25.68 | 29.42 | 46.57 | 74.58 | 82.67 | 80.55 | 81.35 | 75.87 | 56.29 | 43.17 | 36.42 | 54.50 | |||||||||||||
2024 | 21.45 | 38.41 | 41.29 | 56.71 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.72 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.16 | 23.18 | 35.49 | 52.58 | 66.63 | 75.86 | 81.13 | 78.91 | 69.14 | 56.04 | 37.14 | 23.32 | 51.48 | |||||||||||||
S.D. | 6.12 | 5.78 | 6.11 | 5.42 | 4.02 | 3.50 | 3.13 | 2.89 | 3.58 | 4.25 | 5.23 | 5.89 | 1.90 | |||||||||||||
SKEW | -0.08 | 0.55 | 0.34 | -0.12 | 0.54 | 0.25 | -0.01 | 0.03 | -0.31 | 0.02 | 0.07 | -0.27 | 0.08 | |||||||||||||
MAX | 31.19 | 38.41 | 51.87 | 65.83 | 78.13 | 86.30 | 88.74 | 85.71 | 76.30 | 68.06 | 49.23 | 36.42 | 56.33 | |||||||||||||
MIN | 5.52 | 12.96 | 24.52 | 38.50 | 59.84 | 68.33 | 72.23 | 71.74 | 56.43 | 43.58 | 26.73 | 7.06 | 46.64 | |||||||||||||
YRS | 82 | 83 | 83 | 82 | 83 | 81 | 84 | 83 | 83 | 84 | 84 | 82 | 77 |