YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | 64.77 | 79.20 | 84.94 | 82.39 | ----- | z | ----- | z | ----- | z | ----- | z | 77.82 | h | ||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.77 | a | 21.77 | k |
1951 | 18.06 | 25.54 | 29.13 | 48.03 | 72.03 | 72.93 | b | 80.80 | a | 75.68 | 66.23 | 58.13 | 32.97 | a | 22.19 | 50.14 | ||||||||||
1952 | 22.17 | a | 29.59 | 31.29 | 59.07 | 68.06 | 78.27 | 82.58 | 78.10 | 73.37 | 56.06 | 43.73 | 27.61 | 54.16 | ||||||||||||
1953 | 23.68 | 25.21 | 36.13 | a | 47.90 | 67.00 | e | 79.75 | b | 81.68 | 81.39 | 73.70 | 70.29 | 49.23 | 29.90 | 55.49 | ||||||||||
1954 | 20.13 | 40.18 | 36.45 | 58.77 | 62.13 | 79.10 | 82.10 | 79.42 | 69.53 | 54.10 | a | 44.17 | 26.84 | 54.41 | ||||||||||||
1955 | 19.19 | 22.57 | 34.84 | 64.93 | 74.23 | a | 76.55 | a | 87.16 | 84.52 | b | 74.50 | 61.24 | b | 33.40 | 20.73 | a | 54.49 | ||||||||
1956 | 19.74 | 23.69 | 33.00 | 53.80 | 69.35 | 82.77 | 77.42 | 79.17 | a | 70.10 | 68.23 | 42.55 | a | 32.45 | 54.36 | |||||||||||
1957 | 20.45 | 30.18 | 38.35 | 57.17 | 68.35 | 76.28 | a | 85.45 | 79.37 | a | 70.13 | 57.20 | a | 38.63 | 32.45 | 54.50 | ||||||||||
1958 | 28.39 | 24.39 | 40.42 | 58.70 | 73.55 | 74.03 | 79.32 | 81.87 | 74.23 | 64.19 | 45.34 | a | 23.13 | 55.63 | ||||||||||||
1959 | 19.61 | 25.36 | 42.68 | 58.77 | 71.61 | 80.27 | 84.26 | 83.71 | 72.60 | 51.97 | 33.13 | 36.23 | 55.02 | |||||||||||||
1960 | 24.58 | 26.59 | 31.19 | 57.47 | 68.84 | 76.23 | 83.84 | 82.68 | 72.67 | 62.35 | 44.70 | 27.81 | 54.91 | |||||||||||||
1961 | 25.42 | 35.18 | 42.06 | 49.73 | 68.58 | 81.83 | 81.52 | 83.26 | 71.80 | 64.00 | 42.37 | 24.71 | 55.87 | |||||||||||||
1962 | 19.03 | 22.39 | 34.26 | 55.37 | 72.48 | 77.47 | 78.42 | 81.71 | 68.43 | 62.39 | 44.70 | 29.42 | 53.84 | |||||||||||||
1963 | 12.81 | 23.57 | 44.17 | a | 59.34 | a | 67.19 | 81.70 | 84.39 | 81.16 | 74.80 | 70.90 | 49.03 | 18.26 | 55.61 | |||||||||||
1964 | 30.16 | 36.45 | 37.39 | 58.47 | 73.40 | a | 80.93 | 87.81 | 81.13 | 70.60 | 59.42 | 44.27 | 23.17 | a | 56.93 | |||||||||||
1965 | 20.16 | 23.04 | 27.39 | 49.73 | 71.35 | 76.43 | 81.90 | 80.21 | b | 63.07 | 62.68 | 42.43 | 34.35 | 52.73 | ||||||||||||
1966 | 13.39 | 25.75 | 46.00 | 51.83 | 67.52 | 81.30 | 87.74 | 79.65 | 72.93 | 61.29 | 39.23 | 26.10 | 54.39 | |||||||||||||
1967 | 25.23 | a | 21.71 | 39.97 | a | 55.43 | 65.23 | 77.37 | 80.68 | 79.16 | 74.20 | 59.32 | 40.20 | 31.23 | 54.14 | |||||||||||
1968 | 25.07 | a | 25.10 | 52.26 | 62.34 | a | 66.13 | a | 78.93 | 82.23 | a | 81.47 | a | 72.10 | 61.94 | 40.38 | a | 25.29 | 56.10 | |||||||
1969 | 17.61 | 27.14 | 32.35 | 59.60 | 73.10 | a | 72.04 | b | 83.27 | a | 86.03 | a | 74.97 | 56.52 | 41.23 | 27.19 | 54.25 | |||||||||
1970 | 14.10 | 27.50 | 34.03 | 56.50 | 71.03 | a | 81.90 | 86.03 | 83.26 | 71.27 | 59.65 | 38.87 | 26.48 | 54.22 | ||||||||||||
1971 | 15.26 | 24.82 | 35.03 | 60.10 | 68.13 | 82.50 | 79.68 | 81.87 | a | 74.27 | 63.94 | 41.13 | 26.48 | 54.43 | ||||||||||||
1972 | 16.57 | a | 21.71 | a | 36.00 | a | 52.73 | 73.55 | 79.87 | 79.87 | a | 79.71 | 69.60 | 55.03 | 38.10 | a | 19.63 | a | 51.86 | |||||||
1973 | 24.82 | c | 30.33 | a | 47.42 | 54.21 | a | 66.10 | 81.28 | a | 83.81 | 82.76 | b | 70.34 | a | 65.87 | a | 42.14 | a | 24.42 | 56.12 | |||||
1974 | 21.60 | a | 26.04 | b | 38.94 | 58.41 | a | 66.26 | 77.93 | a | 88.70 | a | 78.90 | 70.80 | 62.77 | a | 42.00 | 31.10 | 55.29 | |||||||
1975 | 23.45 | 24.93 | 32.06 | 46.86 | a | 73.07 | b | 78.30 | 86.77 | 81.17 | b | 68.48 | a | 65.71 | 47.59 | a | 27.68 | 54.67 | ||||||||
1976 | 22.00 | 36.55 | 41.52 | 64.03 | a | 71.10 | a | 84.14 | a | 89.23 | 85.23 | 76.39 | b | 56.52 | b | 38.96 | c | 22.19 | 57.32 | |||||||
1977 | 9.43 | a | 32.50 | 46.23 | 65.47 | 79.90 | 80.69 | a | 85.65 | 78.37 | a | 72.27 | 58.70 | a | 40.93 | a | 21.40 | a | 55.96 | |||||||
1978 | 15.16 | 21.25 | 38.13 | a | 55.00 | 72.73 | a | 79.63 | 80.87 | a | 82.74 | 77.48 | c | 60.63 | a | 39.24 | a | 22.13 | 53.75 | |||||||
1979 | 9.40 | a | 18.75 | 35.23 | 52.23 | 67.97 | b | 80.10 | 82.06 | 78.23 | 74.66 | a | 58.23 | 40.00 | a | 33.55 | 52.53 | |||||||||
1980 | 23.00 | 24.07 | a | 36.47 | a | 62.07 | b | 76.50 | a | 80.73 | 88.06 | 82.45 | 72.86 | b | 56.83 | b | 46.63 | 27.42 | 56.42 | |||||||
1981 | 30.10 | 32.54 | 49.67 | a | 61.67 | 69.58 | 77.97 | a | 83.17 | b | 79.52 | 71.67 | 56.27 | a | 46.66 | a | 25.72 | b | 57.04 | |||||||
1982 | 13.19 | d | 25.58 | b | 37.30 | a | 53.38 | a | 72.40 | a | 76.07 | 86.71 | c | 82.40 | a | 70.93 | 59.90 | a | 38.82 | b | 32.70 | a | 54.11 | |||
1983 | 27.00 | a | 32.96 | b | 40.93 | a | 52.00 | a | 66.66 | b | 78.77 | 87.07 | a | 86.62 | b | ----- | z | ----- | z | ----- | z | ----- | z | 59.00 | d | |
1984 | 21.64 | c | 35.18 | a | 34.53 | a | 58.89 | c | 68.63 | a | 80.00 | 82.90 | a | 84.55 | b | 70.67 | 60.67 | a | 42.97 | 27.58 | 55.68 | |||||
1985 | 22.93 | a | 25.21 | 46.61 | c | 65.43 | b | 76.22 | d | 77.03 | a | 85.17 | a | 77.89 | d | 70.63 | 58.63 | a | 34.00 | a | 18.43 | a | 54.85 | |||
1986 | 25.62 | b | 23.86 | 44.41 | b | 62.52 | a | 72.07 | a | 81.41 | a | 83.52 | 78.64 | c | 70.17 | 60.87 | a | 38.07 | a | 31.30 | a | 56.04 | ||||
1987 | 31.50 | c | 42.77 | b | 50.40 | a | 69.17 | 77.47 | a | 86.86 | a | 87.03 | a | 80.07 | c | 75.45 | a | 56.68 | c | 46.38 | a | 32.03 | 61.32 | |||
1988 | 21.06 | 25.61 | a | 46.11 | c | 63.04 | b | 81.76 | b | 90.14 | a | 91.40 | a | 88.37 | a | 78.14 | b | 56.46 | c | 41.67 | 30.68 | 59.54 | ||||
1989 | 33.34 | b | 22.00 | 37.18 | c | 59.93 | 71.83 | a | 81.78 | c | 87.68 | 83.40 | a | 74.70 | c | 66.41 | b | 39.79 | a | 21.23 | a | 56.61 | ||||
1990 | 37.29 | c | 35.54 | b | 47.52 | b | 61.73 | 69.84 | 82.32 | b | 82.10 | a | 80.60 | a | 76.13 | 61.70 | a | 49.78 | c | 25.42 | 59.16 | |||||
1991 | 22.42 | 35.39 | 44.74 | 61.77 | 70.48 | 83.45 | a | 80.87 | 80.84 | 69.83 | 59.16 | 30.87 | 28.80 | a | 55.72 | |||||||||||
1992 | 28.97 | 33.93 | 40.81 | 52.97 | 74.26 | 76.47 | 75.39 | 75.61 | 71.57 | 58.94 | 35.38 | a | 28.33 | a | 54.38 | |||||||||||
1993 | 22.68 | 23.78 | a | 37.68 | 55.60 | 67.48 | 73.80 | 77.84 | 79.60 | a | 64.60 | 58.77 | 38.03 | 27.29 | c | 52.26 | ||||||||||
1994 | 11.93 | b | 20.79 | 44.13 | 59.41 | a | 74.71 | 80.75 | b | 79.23 | 77.52 | b | 74.13 | 60.87 | 45.73 | 31.03 | 55.02 | |||||||||
1995 | 24.19 | 28.07 | 43.26 | 52.69 | a | 67.37 | a | 79.69 | a | 82.36 | c | 83.55 | 71.50 | 58.13 | a | 34.10 | a | 25.55 | 54.20 | |||||||
1996 | 18.97 | 26.48 | 35.00 | 54.93 | a | 64.40 | a | 77.90 | 79.77 | a | 81.16 | 71.86 | b | 62.62 | b | 33.76 | a | 22.58 | 52.45 | |||||||
1997 | 19.16 | 28.74 | a | 38.06 | 56.13 | 66.16 | 81.30 | c | 79.74 | 77.03 | a | 73.23 | 62.77 | 34.50 | 32.93 | b | 54.15 | |||||||||
1998 | 25.07 | a | 37.18 | 39.97 | 62.93 | 78.21 | b | 74.24 | a | 81.70 | a | 80.50 | a | 79.07 | a | 60.39 | 45.23 | 35.23 | 58.31 | |||||||
1999 | 19.52 | 35.75 | 44.53 | a | 60.31 | a | 71.26 | 78.38 | a | 85.68 | 78.68 | 73.07 | a | 63.42 | 53.24 | a | 35.03 | 58.24 | ||||||||
2000 | 25.40 | a | 36.31 | 52.65 | 59.93 | c | 71.93 | a | 74.63 | 79.71 | 79.65 | 72.50 | 63.55 | 37.52 | a | 14.58 | 55.70 | |||||||||
2001 | 26.90 | 21.43 | 34.45 | 56.30 | 68.00 | 76.37 | 83.81 | 83.42 | 69.37 | 58.23 | 56.07 | 34.61 | 55.75 | |||||||||||||
2002 | 30.45 | 35.36 | 31.93 | b | 53.83 | 63.58 | 79.52 | a | 84.00 | 77.52 | 73.70 | 49.87 | 40.87 | 34.26 | 54.57 | |||||||||||
2003 | 24.47 | a | 24.71 | 40.81 | 56.93 | 66.90 | 75.70 | 81.19 | 84.58 | 73.10 | 62.10 | 40.47 | 32.19 | 55.26 | ||||||||||||
2004 | 21.39 | ----- | z | 43.00 | 60.63 | 65.13 | 73.72 | l | 80.03 | b | 75.70 | a | 77.15 | d | 59.71 | c | 45.70 | g | 30.93 | a | 57.08 | c | ||||
2005 | ----- | z | ----- | z | 42.26 | 63.13 | 65.29 | 82.27 | 82.94 | 77.42 | l | 74.77 | 61.90 | 44.76 | a | 23.74 | 60.12 | c | ||||||||
2006 | 32.87 | 27.39 | 40.18 | c | 62.10 | 68.55 | 78.73 | 86.06 | 79.68 | f | 67.80 | 55.65 | 44.60 | 34.68 | 54.42 | a | ||||||||||
2007 | 26.97 | 19.39 | 44.00 | 55.77 | 73.45 | 80.03 | 83.48 | 78.81 | 74.40 | 61.74 | 42.43 | 22.61 | 55.26 | |||||||||||||
2008 | 19.87 | 21.83 | 35.26 | 50.77 | 65.65 | 75.67 | 82.35 | 80.68 | 73.10 | 59.58 | 41.73 | 22.10 | 52.38 | |||||||||||||
2009 | 15.52 | 29.21 | 39.35 | 56.70 | 69.55 | 75.00 | 76.68 | 77.13 | 74.83 | 49.39 | 50.63 | 23.10 | 53.09 | |||||||||||||
2010 | 18.71 | 26.82 | 47.00 | 65.57 | 69.52 | 75.27 | 82.26 | 83.26 | 68.40 | 64.35 | 42.50 | 20.84 | 55.37 | |||||||||||||
2011 | 17.94 | 24.68 | 35.13 | 53.55 | a | 65.58 | 76.33 | 85.39 | 80.42 | 71.53 | 65.55 | 47.40 | 33.35 | 54.74 | ||||||||||||
2012 | 30.39 | 34.90 | 57.23 | 58.57 | 72.45 | 79.93 | 87.52 | 79.87 | 75.27 | 56.94 | 45.87 | 30.52 | 59.12 | |||||||||||||
2013 | 24.74 | 24.64 | 32.71 | 46.07 | 65.03 | 75.03 | 81.03 | 81.16 | 76.17 | 57.52 | 39.87 | 19.81 | 51.98 | |||||||||||||
2014 | 17.61 | 16.79 | 31.27 | a | 51.10 | a | 66.23 | 76.50 | 78.29 | 79.74 | 71.70 | 58.74 | 33.30 | 28.94 | 50.85 | |||||||||||
2015 | 25.23 | 19.18 | 44.73 | a | 59.40 | 67.29 | 76.20 | 80.03 | 77.06 | 75.93 | 61.16 | 48.80 | 34.65 | 55.81 | ||||||||||||
2016 | 22.13 | 30.55 | 47.48 | 57.13 | 70.35 | 79.47 | 85.32 | 79.23 | i | 73.20 | 61.52 | 51.97 | a | 26.65 | 55.07 | a | ||||||||||
2017 | 24.94 | 37.68 | 38.90 | 57.53 | 66.00 | 80.07 | 83.26 | 75.74 | 75.57 | 59.55 | 39.67 | 25.45 | 55.36 | |||||||||||||
2018 | 20.94 | 22.25 | 38.58 | 43.83 | 77.06 | 79.30 | 82.10 | 80.19 | 73.37 | 51.87 | 33.10 | a | 29.06 | 52.64 | ||||||||||||
2019 | 20.45 | 18.50 | 34.65 | 53.77 | 62.39 | 78.00 | 82.42 | 77.63 | a | 73.37 | 53.03 | 34.40 | 28.68 | 51.44 | ||||||||||||
2020 | 25.87 | 28.28 | 40.37 | d | 64.50 | v | 65.97 | 81.27 | 83.94 | 81.03 | 69.23 | 50.16 | 46.93 | 32.06 | 55.01 | a | ||||||||||
2021 | 26.65 | 17.07 | 48.13 | 54.73 | 67.94 | 85.83 | 84.03 | 82.58 | 75.47 | 64.00 | 43.83 | 30.84 | 56.76 | |||||||||||||
2022 | 18.13 | 22.21 | 37.61 | 47.07 | 69.13 | 81.33 | 83.45 | 79.35 | 74.13 | 61.00 | 42.10 | a | 21.24 | b | 53.06 | |||||||||||
2023 | 25.65 | 26.93 | 35.52 | 52.10 | 72.03 | 83.50 | 82.10 | 82.00 | 76.73 | 59.32 | 45.13 | 38.60 | a | 56.63 | ||||||||||||
2024 | 23.97 | b | 40.83 | 53.33 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.40 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.24 | 27.51 | 39.81 | 56.88 | 69.82 | 79.11 | 83.09 | 80.72 | 72.59 | 59.93 | 41.83 | 27.52 | 54.99 | |||||||||||||
S.D. | 5.56 | 6.10 | 6.06 | 5.22 | 4.09 | 3.26 | 3.18 | 2.67 | 3.00 | 4.30 | 5.32 | 5.12 | 2.05 | |||||||||||||
SKEW | 0.01 | 0.54 | 0.43 | -0.22 | 0.58 | 0.46 | 0.10 | 0.29 | -0.58 | -0.14 | 0.13 | -0.13 | 0.37 | |||||||||||||
MAX | 37.29 | 42.77 | 57.23 | 69.17 | 81.76 | 90.14 | 91.40 | 88.37 | 79.07 | 70.90 | 56.07 | 38.60 | 61.32 | |||||||||||||
MIN | 9.40 | 16.79 | 27.39 | 43.83 | 62.13 | 72.04 | 75.39 | 75.61 | 63.07 | 49.39 | 30.87 | 14.58 | 50.14 | |||||||||||||
YRS | 73 | 72 | 73 | 72 | 74 | 73 | 74 | 71 | 72 | 72 | 71 | 73 | 67 |