YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 73.74 | 82.80 | 90.10 | 79.90 | 79.57 | 69.48 | 34.60 | 31.13 | 67.67 | d | ||||||||
1941 | 25.10 | 25.79 | 38.90 | 59.50 | 76.71 | 79.20 | 87.65 | 84.61 | 77.10 | 61.65 | 45.23 | 36.45 | 58.16 | |||||||||||||
1942 | 32.16 | 30.96 | 44.97 | 65.77 | 64.06 | 75.20 | 84.06 | 81.81 | 67.27 | 61.58 | 45.13 | 24.48 | 56.45 | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | 74.18 | t | 80.23 | 87.45 | 83.74 | 72.03 | 64.03 | 38.73 | 37.06 | 66.18 | e | |||||||
1944 | 40.39 | 31.72 | 33.13 | 52.33 | 72.13 | 81.03 | 83.74 | 82.52 | 73.17 | 66.03 | 42.40 | 30.26 | 57.40 | |||||||||||||
1945 | 24.32 | 30.36 | 51.90 | 54.30 | 66.19 | 72.33 | 82.90 | 82.97 | 70.43 | 63.32 | 39.07 | 19.97 | 54.84 | |||||||||||||
1946 | 25.52 | 27.82 | 48.77 | 65.07 | 67.26 | 80.00 | 84.52 | 81.03 | 71.50 | 59.16 | 40.77 | 28.87 | 56.69 | |||||||||||||
1947 | 34.03 | 23.36 | 37.10 | 50.97 | 65.06 | 73.97 | 84.58 | 89.32 | 74.50 | 69.61 | 35.13 | 26.61 | 55.35 | |||||||||||||
1948 | 20.87 | 24.48 | 35.77 | 61.93 | 71.71 | 76.93 | 86.61 | 83.52 | 79.00 | 62.97 | 41.37 | 27.81 | 56.08 | |||||||||||||
1949 | 19.16 | 24.61 | 39.10 | 61.57 | 76.03 | 82.97 | 86.81 | 88.16 | 71.10 | 61.87 | 48.97 | 28.94 | 57.44 | |||||||||||||
1950 | 13.55 | 29.14 | 35.19 | 44.23 | 65.26 | 82.87 | 82.23 | 80.10 | 75.87 | 64.77 | 38.53 | 23.68 | 52.95 | |||||||||||||
1951 | 18.77 | 29.79 | 27.16 | 50.03 | 72.61 | 74.23 | 83.13 | 78.16 | 67.47 | 58.42 | 36.33 | 22.65 | 51.56 | |||||||||||||
1952 | 22.61 | 30.41 | 30.90 | 60.13 | 70.48 | 82.10 | 85.97 | 83.13 | 79.73 | d | 59.84 | 45.57 | 29.68 | 56.71 | ||||||||||||
1953 | 25.26 | 28.96 | 41.00 | 51.03 | 69.45 | 80.87 | 84.48 | 84.68 | 75.57 | 69.94 | 48.67 | 30.71 | 57.55 | |||||||||||||
1954 | 17.39 | 41.89 | 35.58 | 58.07 | 65.39 | 79.70 | 86.65 | 82.71 | 70.63 | 57.52 | 50.67 | 32.55 | 56.56 | |||||||||||||
1955 | 26.23 | 23.54 | 38.55 | 68.37 | 78.42 | 78.33 | 89.19 | 86.84 | 75.50 | 65.13 | 33.47 | 19.87 | 56.95 | |||||||||||||
1956 | 20.35 | 24.34 | 35.48 | 52.27 | 71.10 | 85.27 | 81.55 | 82.52 | 73.33 | 71.23 | 43.30 | 35.32 | 56.34 | |||||||||||||
1957 | 20.42 | 31.75 | 41.61 | 57.83 | 67.97 | 78.33 | 89.48 | 81.26 | 71.57 | 57.60 | a | 41.87 | 35.74 | 56.29 | ||||||||||||
1958 | 31.68 | 25.71 | 39.23 | 59.80 | 77.90 | 75.73 | 82.00 | 87.81 | 76.87 | 66.58 | 46.67 | 26.94 | 58.08 | |||||||||||||
1959 | 20.19 | 26.14 | 46.87 | 60.47 | 71.35 | 85.97 | 89.55 | 89.48 | 75.83 | 53.39 | 33.62 | a | 37.74 | 57.55 | ||||||||||||
1960 | 23.65 | 24.79 | 28.81 | 55.03 | 71.16 | 78.40 | 87.87 | 85.19 | 75.23 | 64.71 | 47.07 | b | 28.61 | 55.88 | ||||||||||||
1961 | 27.48 | 36.29 | 45.48 | 54.24 | a | 68.84 | 85.10 | 84.13 | 88.45 | 72.33 | 65.29 | 43.67 | 23.81 | 57.93 | ||||||||||||
1962 | 21.48 | 23.68 | 33.58 | 56.20 | 71.61 | 79.30 | 81.23 | 85.97 | 72.03 | 65.55 | 50.41 | a | 33.45 | 56.21 | ||||||||||||
1963 | 18.87 | 30.21 | 47.87 | 61.90 | 70.23 | 82.57 | 84.55 | 82.61 | 76.93 | 74.45 | 50.67 | 22.32 | 58.60 | |||||||||||||
1964 | 33.58 | 39.21 | 35.48 | 60.47 | 77.26 | 83.40 | 89.45 | 81.35 | 73.47 | 65.65 | 48.46 | b | ----- | z | 62.53 | a | ||||||||||
1965 | 19.26 | d | 25.36 | 27.74 | 53.53 | 71.71 | 79.23 | 83.84 | 82.71 | 62.55 | a | 67.26 | 45.50 | 36.83 | a | 54.63 | ||||||||||
1966 | 12.61 | 25.82 | 46.94 | 50.60 | 68.74 | 80.87 | 89.77 | 80.13 | 73.80 | 63.81 | 40.23 | 28.71 | 55.17 | |||||||||||||
1967 | 27.67 | a | 24.32 | 44.90 | 58.10 | 67.50 | a | 77.07 | 83.65 | 82.58 | 75.60 | 61.03 | 45.57 | 32.06 | 56.67 | |||||||||||
1968 | 26.19 | 24.83 | 56.35 | 61.33 | 66.84 | 81.37 | 83.45 | 84.52 | 73.13 | 63.03 | 43.83 | 23.39 | 57.36 | |||||||||||||
1969 | 14.57 | a | 27.11 | 31.68 | 52.57 | i | 72.87 | 72.97 | 83.97 | 86.83 | a | 75.73 | 55.83 | a | 45.00 | 27.45 | 54.00 | a | ||||||||
1970 | 14.87 | a | 28.11 | 34.39 | 55.70 | 73.10 | 82.10 | 87.57 | a | 84.65 | 75.60 | 59.74 | 38.10 | 26.65 | 55.05 | |||||||||||
1971 | 17.68 | 28.04 | 41.42 | 62.27 | 71.03 | 82.30 | 80.71 | 86.19 | 75.50 | 62.94 | 41.07 | 26.17 | a | 56.28 | ||||||||||||
1972 | 19.43 | a | 23.25 | a | 38.94 | 53.53 | 71.33 | a | 80.70 | 82.74 | 82.16 | 73.60 | 59.00 | 39.10 | 21.32 | 53.76 | ||||||||||
1973 | 27.03 | 32.14 | 47.81 | 57.57 | 70.84 | 83.53 | 85.55 | 86.16 | 72.00 | 69.06 | 44.50 | 24.90 | 58.42 | |||||||||||||
1974 | 20.81 | 29.82 | 38.39 | 60.53 | 67.52 | 82.20 | 90.68 | 80.90 | 76.50 | j | 67.48 | 43.57 | 34.10 | 56.00 | a | |||||||||||
1975 | 25.70 | a | 23.57 | 35.10 | 45.40 | 74.94 | 80.77 | 91.45 | 84.45 | 73.07 | 67.55 | 45.87 | 28.42 | 56.36 | ||||||||||||
1976 | 24.29 | 38.17 | 44.26 | 67.00 | 75.06 | 87.55 | a | 93.39 | 91.74 | 80.80 | 58.10 | 40.30 | 26.48 | b | 60.60 | |||||||||||
1977 | 11.29 | 35.35 | b | 45.77 | 68.62 | a | 81.48 | 81.41 | a | 90.03 | 79.35 | 74.87 | 62.65 | 38.77 | 23.14 | i | 60.87 | a | ||||||||
1978 | 13.16 | 18.44 | a | 38.45 | 53.31 | a | 71.94 | 79.70 | 84.42 | 85.10 | 80.03 | 65.13 | 41.53 | 25.06 | 54.69 | |||||||||||
1979 | 10.35 | 16.93 | 33.97 | 48.90 | a | 66.10 | 81.03 | a | 82.77 | ----- | z | ----- | z | 60.29 | c | 41.37 | 37.94 | 47.96 | b | |||||||
1980 | 25.29 | 24.93 | 36.71 | ----- | z | 76.29 | 80.00 | a | 86.17 | a | 82.81 | 76.37 | 60.06 | 49.86 | a | 31.58 | 57.28 | a | ||||||||
1981 | 33.42 | 35.39 | 53.65 | 66.93 | 72.94 | 79.37 | 85.53 | a | 82.65 | 76.27 | 59.48 | b | 50.57 | 24.35 | 60.05 | |||||||||||
1982 | 10.65 | 26.14 | 38.45 | 57.43 | 74.10 | a | 77.60 | 87.29 | 84.29 | 73.73 | 61.13 | a | 38.50 | 35.61 | 55.41 | |||||||||||
1983 | 29.65 | 33.64 | 39.20 | a | 55.03 | a | 69.97 | 79.43 | 91.28 | b | 89.81 | 76.20 | 58.13 | 39.00 | 10.87 | a | 56.02 | |||||||||
1984 | 25.30 | a | 36.14 | 32.97 | 57.21 | a | 70.39 | 79.60 | 86.61 | 88.10 | 72.10 | 61.97 | 47.03 | 27.10 | a | 57.04 | ||||||||||
1985 | 23.35 | 28.21 | 45.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.48 | i | |||
1986 | 27.10 | 23.25 | ----- | z | 59.50 | 73.16 | 84.30 | 85.80 | a | ----- | z | 71.10 | 62.32 | 40.14 | a | 39.37 | a | 56.60 | b | |||||||
1987 | 32.83 | a | 44.82 | 47.96 | c | 71.77 | 80.13 | 88.17 | 88.39 | 83.35 | ----- | z | ----- | z | ----- | z | 30.87 | 63.14 | c | |||||||
1988 | 22.42 | 24.97 | 44.61 | 66.57 | b | 81.77 | a | 92.93 | 93.48 | 90.06 | ----- | z | ----- | z | 44.17 | 34.94 | 59.59 | b | ||||||||
1989 | 35.10 | 22.75 | 37.00 | 59.43 | 75.29 | 83.17 | 90.16 | 84.97 | 76.67 | 68.03 | 42.23 | 25.00 | 58.32 | |||||||||||||
1990 | 41.29 | 38.64 | 47.45 | 63.50 | 71.29 | 83.47 | 84.00 | 83.13 | 80.53 | 65.23 | 51.17 | 29.90 | 61.63 | |||||||||||||
1991 | 27.87 | 43.25 | 45.74 | 63.37 | 73.52 | 82.41 | a | 82.65 | 82.77 | 72.87 | 62.48 | 34.17 | 33.23 | 58.69 | ||||||||||||
1992 | 34.58 | 36.21 | 47.77 | 54.00 | 77.32 | 76.87 | 74.58 | 77.90 | 74.13 | 62.39 | 33.70 | 23.94 | 56.12 | |||||||||||||
1993 | 20.39 | 21.44 | a | 37.93 | a | 55.03 | 69.20 | a | 74.72 | a | 79.42 | 80.90 | 68.80 | 61.68 | 37.67 | 27.94 | 52.93 | |||||||||
1994 | 10.03 | a | 19.36 | 44.55 | 60.47 | 77.13 | 81.60 | 80.68 | 79.30 | a | 76.33 | 63.52 | 47.47 | 33.10 | 56.13 | |||||||||||
1995 | 26.52 | 31.36 | 42.52 | 50.00 | 68.50 | a | 83.67 | 85.58 | 83.87 | 75.07 | a | 58.65 | 36.17 | 26.58 | 55.71 | |||||||||||
1996 | 18.26 | 29.21 | a | 36.13 | 54.13 | 68.13 | a | 83.83 | 84.16 | ----- | z | ----- | z | 64.26 | ----- | z | 19.87 | 50.89 | c | |||||||
1997 | 16.94 | 29.86 | 37.52 | 55.23 | 68.21 | b | 85.80 | 82.48 | 80.45 | 77.67 | 65.84 | 34.93 | a | 34.10 | b | 55.75 | ||||||||||
1998 | 23.39 | 37.11 | 33.94 | 63.17 | a | 79.40 | a | 77.00 | 84.48 | 84.58 | 83.40 | 62.00 | 42.40 | 35.84 | 58.89 | |||||||||||
1999 | 19.87 | 37.86 | 45.65 | 59.37 | 72.16 | 79.47 | 85.93 | a | 81.26 | 70.40 | 61.37 | a | 53.93 | b | 38.65 | 58.82 | ||||||||||
2000 | 24.20 | a | 36.24 | 52.65 | 56.20 | 72.03 | 76.57 | 82.16 | 82.58 | 74.57 | 61.94 | 35.40 | 14.57 | a | 55.76 | |||||||||||
2001 | 28.03 | a | 18.63 | a | 32.19 | 55.24 | a | 70.81 | 79.50 | 85.67 | a | 84.00 | 72.03 | a | 59.19 | 54.47 | 29.58 | 55.78 | ||||||||
2002 | 30.03 | 38.75 | 29.71 | ----- | z | 66.39 | 82.93 | ----- | z | ----- | z | 75.10 | 48.71 | 42.07 | 34.23 | 49.77 | c | |||||||||
2003 | 25.42 | 24.75 | 42.20 | a | 60.66 | a | 66.97 | 78.20 | 84.19 | 85.45 | ----- | z | 62.84 | 37.33 | 31.77 | 54.53 | a | |||||||||
2004 | 20.90 | 28.52 | 46.23 | a | 62.50 | 65.00 | ----- | z | 80.68 | 75.13 | 76.47 | 60.16 | 46.30 | 32.77 | 54.06 | a | ||||||||||
2005 | 21.68 | 33.75 | ----- | z | 63.07 | ----- | z | 80.80 | 84.90 | 80.71 | 78.60 | 61.87 | 45.00 | 26.13 | 57.65 | b | ||||||||||
2006 | 32.90 | 26.75 | 38.19 | 61.90 | 71.26 | 80.70 | 87.39 | 81.39 | 68.57 | 57.23 | 47.87 | 37.87 | 57.67 | |||||||||||||
2007 | 28.48 | 20.46 | 45.13 | a | 54.50 | 75.23 | 81.63 | 85.77 | 78.35 | 76.17 | 62.97 | 43.40 | 24.29 | 56.37 | ||||||||||||
2008 | 22.90 | a | 26.07 | a | 36.10 | 53.47 | 67.90 | 77.13 | 85.03 | 83.32 | 75.60 | 59.58 | 43.00 | 20.10 | 54.18 | |||||||||||
2009 | 18.97 | 26.59 | a | 39.29 | 55.50 | 73.00 | 76.97 | 79.16 | 78.39 | 75.90 | 48.68 | 51.30 | 20.81 | 53.71 | ||||||||||||
2010 | 18.67 | a | 20.04 | 43.94 | 66.00 | 70.57 | a | 78.47 | 84.45 | 85.16 | 69.67 | 64.48 | 42.63 | 19.48 | 55.30 | |||||||||||
2011 | 15.42 | 23.81 | b | 31.16 | 52.37 | 67.42 | 77.20 | 87.45 | 82.52 | 74.67 | 65.06 | 46.90 | 36.06 | 55.00 | ||||||||||||
2012 | 33.61 | 36.76 | 55.61 | 61.27 | 73.71 | 83.37 | 89.55 | 83.03 | 77.47 | 56.74 | 45.57 | 26.06 | 60.23 | |||||||||||||
2013 | 25.03 | 22.93 | 28.55 | 43.07 | 67.16 | 77.23 | 83.58 | 82.61 | 79.10 | 56.90 | 42.07 | 19.35 | 52.30 | |||||||||||||
2014 | 20.10 | 18.96 | 35.06 | 52.17 | 68.84 | 78.77 | 80.26 | 80.00 | 73.07 | 61.45 | 32.33 | 28.87 | 52.49 | |||||||||||||
2015 | 27.23 | 19.54 | 45.52 | 62.20 | 68.06 | 80.50 | 82.42 | 79.03 | 79.30 | 64.35 | 51.33 | 32.03 | 57.63 | |||||||||||||
2016 | 22.84 | 31.97 | 50.07 | a | 58.33 | 72.71 | 84.17 | a | 83.42 | 81.68 | 73.50 | 60.77 | 51.70 | 25.16 | 58.03 | |||||||||||
2017 | 23.23 | 38.57 | 39.87 | 57.17 | 68.55 | 81.57 | 85.10 | 76.45 | 74.13 | 60.55 | 40.83 | 28.10 | 56.18 | |||||||||||||
2018 | 23.29 | 22.64 | 35.29 | 41.77 | 78.45 | 80.37 | 81.48 | 79.81 | 72.73 | 52.29 | 32.40 | 30.13 | a | 52.55 | ||||||||||||
2019 | 17.06 | 11.25 | 31.65 | 52.50 | 62.26 | 79.90 | 82.42 | 76.94 | 73.67 | 52.58 | 37.03 | 26.55 | 50.32 | |||||||||||||
2020 | 23.16 | 25.45 | 40.87 | 53.45 | a | 66.65 | 84.03 | 84.94 | 82.45 | 73.34 | a | 52.37 | a | 48.30 | 35.29 | 55.86 | ||||||||||
2021 | 29.29 | 16.54 | 48.29 | 54.80 | 69.42 | 86.80 | 85.00 | 82.39 | 76.80 | 63.94 | 44.63 | 29.58 | 57.29 | |||||||||||||
2022 | 19.55 | 22.14 | 37.90 | 45.83 | 67.29 | 82.40 | 82.84 | 80.00 | 76.37 | 63.06 | 38.80 | 21.90 | a | 53.17 | ||||||||||||
2023 | 21.29 | 25.61 | 29.03 | 48.90 | 76.19 | 84.47 | 82.68 | 82.94 | 78.03 | 59.77 | 47.77 | 39.71 | 56.37 | |||||||||||||
2024 | 21.84 | 39.45 | 44.77 | 57.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.77 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.46 | 28.28 | 40.17 | 57.21 | 71.33 | 80.69 | 85.16 | 83.04 | 74.56 | 61.96 | 42.92 | 28.73 | 56.24 | |||||||||||||
S.D. | 6.58 | 6.74 | 6.83 | 6.10 | 4.23 | 3.55 | 3.36 | 3.27 | 3.44 | 4.68 | 5.43 | 5.97 | 2.14 | |||||||||||||
SKEW | 0.27 | 0.30 | 0.20 | -0.17 | 0.40 | 0.27 | 0.12 | 0.28 | -0.43 | -0.40 | -0.03 | -0.30 | -0.24 | |||||||||||||
MAX | 41.29 | 44.82 | 56.35 | 71.77 | 81.77 | 92.93 | 93.48 | 91.74 | 83.40 | 74.45 | 54.47 | 39.71 | 61.63 | |||||||||||||
MIN | 10.03 | 11.25 | 27.16 | 41.77 | 62.26 | 72.33 | 74.58 | 75.13 | 62.55 | 48.68 | 32.33 | 10.87 | 50.32 | |||||||||||||
YRS | 83 | 83 | 81 | 79 | 81 | 82 | 82 | 79 | 77 | 81 | 81 | 81 | 67 |