YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.87 | 61.29 | 50.57 | 35.06 | 55.70 | h | ||||
1942 | 28.71 | 36.86 | 49.39 | 66.13 | 74.52 | 87.50 | 94.52 | 92.13 | 83.93 | 79.16 | 62.97 | 43.23 | a | 66.59 | ||||||||||||
1943 | 40.06 | 44.82 | 57.55 | 76.50 | 75.97 | 85.57 | 94.55 | 90.61 | 87.80 | 71.90 | 50.97 | 33.39 | 67.47 | |||||||||||||
1944 | 20.19 | 29.41 | 43.68 | 61.63 | 76.83 | a | 87.10 | 91.00 | 92.32 | 85.53 | 80.23 | 48.38 | a | ----- | z | 65.12 | a | |||||||||
1945 | 40.52 | ----- | z | 60.94 | ----- | z | 64.23 | ----- | z | 86.17 | h | ----- | z | ----- | z | ----- | z | 40.00 | 32.55 | 47.65 | g | |||||
1946 | 31.00 | 43.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.22 | g | ----- | z | ----- | z | ----- | z | 37.36 | j | ||
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 | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 90.25 | s | 85.64 | b | 69.50 | c | 45.21 | a | 41.13 | 60.37 | h | |
1956 | 39.47 | a | 35.24 | h | 57.17 | b | 65.71 | b | 80.96 | g | 91.03 | 93.77 | a | 89.10 | b | 83.06 | n | 69.55 | 45.48 | a | 26.32 | 64.18 | c | |||
1957 | 23.48 | 28.76 | c | 53.07 | c | 61.45 | a | 70.93 | d | 83.50 | b | 92.52 | f | 88.07 | c | 79.83 | g | 65.19 | d | 43.74 | c | 40.20 | f | 57.58 | c | |
1958 | 36.63 | d | 50.20 | h | 50.70 | d | 62.56 | c | 82.36 | c | 88.76 | i | 93.34 | b | 95.24 | b | 82.88 | d | 71.53 | a | 56.42 | k | 45.00 | e | 68.92 | c |
1959 | 36.93 | c | 41.58 | b | 54.21 | g | 67.62 | f | 74.12 | f | 90.76 | a | 94.83 | a | 91.04 | g | 77.07 | c | 64.44 | d | 50.74 | g | 36.32 | f | 67.60 | f |
1960 | 24.11 | c | 27.64 | a | 52.73 | a | 68.52 | a | 77.34 | b | 89.88 | f | 96.66 | b | 94.48 | b | 84.76 | a | 67.36 | f | 49.62 | d | 36.69 | b | 61.25 | b |
1961 | 39.16 | 48.38 | b | 54.67 | d | 65.38 | a | 78.41 | b | 92.50 | 95.54 | c | 92.30 | a | 72.31 | a | 63.78 | d | 39.88 | e | 30.07 | a | 64.36 | |||
1962 | 23.47 | a | 36.52 | a | 44.47 | a | 69.04 | b | 75.28 | b | 85.75 | b | 92.23 | a | 92.22 | d | 83.11 | c | 70.60 | a | 53.81 | c | 38.85 | d | 63.78 | |
1963 | 25.57 | a | 52.73 | b | 55.57 | c | 63.41 | a | 81.20 | a | 86.12 | f | 96.36 | c | 90.12 | e | 83.25 | b | 73.46 | e | 52.00 | d | 33.55 | b | 64.29 | a |
1964 | 36.33 | a | 41.54 | c | 48.59 | d | 63.55 | a | 75.90 | 83.07 | c | 97.81 | d | 89.86 | b | 81.10 | 71.03 | 39.07 | b | 25.00 | b | 62.74 | ||||
1965 | 26.97 | b | 34.36 | 45.03 | 64.30 | 72.23 | 81.76 | a | 90.97 | 89.77 | 73.00 | 70.84 | 55.04 | b | 34.59 | d | 61.57 | |||||||||
1966 | 32.29 | 38.11 | 56.52 | b | 68.82 | b | 84.94 | n | 88.03 | a | 96.33 | a | 93.07 | a | 83.07 | 66.39 | c | 53.47 | 23.34 | b | 63.59 | a | ||||
1967 | 22.77 | 30.32 | 55.97 | b | 63.73 | 74.75 | g | 79.73 | 94.13 | a | 92.61 | 82.23 | 69.97 | 52.79 | b | 22.77 | a | 60.64 | a | |||||||
1968 | 16.71 | ----- | z | 57.10 | a | 59.21 | b | 73.35 | 87.90 | 93.19 | 83.87 | 79.23 | 67.61 | 48.10 | a | 29.80 | a | 63.28 | a | |||||||
1969 | 35.00 | 35.93 | 44.00 | 67.59 | a | 82.81 | 81.62 | d | 94.60 | a | 94.60 | a | 83.23 | d | 56.13 | 48.38 | a | 39.11 | c | 63.58 | ||||||
1970 | 28.23 | a | 48.64 | 52.39 | c | 59.77 | d | 78.59 | b | 79.67 | l | 92.96 | f | 94.52 | b | 79.69 | a | 62.45 | i | 51.00 | d | 36.59 | b | 58.82 | c | |
1971 | 34.23 | a | 43.88 | b | 54.83 | b | 65.30 | 73.87 | 87.50 | 95.19 | 93.74 | 78.47 | 62.73 | a | 32.80 | 26.47 | a | 62.42 | ||||||||
1972 | 37.83 | b | 48.34 | 64.10 | 68.10 | 78.54 | c | 86.83 | a | 95.29 | 91.48 | 80.79 | b | 65.00 | 44.57 | 21.44 | d | 65.19 | ||||||||
1973 | 12.77 | a | 21.57 | 44.17 | a | 60.72 | a | 76.37 | a | 86.10 | 91.00 | 92.72 | b | 79.63 | 70.97 | b | 42.71 | b | 29.77 | a | 59.04 | |||||
1974 | 16.23 | a | 24.93 | 58.24 | b | 63.10 | 81.79 | b | 91.77 | 93.36 | c | 91.79 | b | 83.60 | 68.29 | 50.82 | b | 36.66 | b | 63.38 | ||||||
1975 | 30.83 | a | 36.56 | a | 53.48 | b | 58.89 | b | 71.50 | e | 81.70 | 93.58 | 90.73 | a | 82.93 | c | 65.86 | c | 48.48 | a | 26.77 | a | 61.78 | |||
1976 | 28.37 | a | 39.71 | a | 51.61 | c | 65.07 | 77.90 | b | 86.83 | 96.26 | 91.35 | h | 82.03 | a | 66.68 | 56.09 | g | 40.34 | b | 63.48 | b | ||||
1977 | 35.97 | 46.08 | b | 53.77 | 71.21 | a | 74.74 | 94.21 | b | 93.35 | 90.63 | a | 83.32 | b | 69.87 | 52.22 | g | 43.93 | c | 68.83 | a | |||||
1978 | 29.43 | a | 31.46 | 55.04 | h | 68.95 | k | 73.38 | j | 89.55 | h | 97.22 | m | 91.44 | f | 80.35 | j | 70.43 | j | 40.65 | m | 19.64 | q | 30.45 | j | |
1979 | 15.07 | a | 22.48 | a | 42.43 | a | 63.72 | e | 73.32 | c | 88.46 | d | 94.27 | e | 87.88 | f | 87.77 | h | 69.12 | f | 41.58 | f | 36.31 | o | 57.11 | e |
1980 | 31.70 | d | 34.12 | c | 51.55 | i | 65.93 | b | 72.00 | a | 88.85 | c | 94.62 | b | 90.72 | b | 80.38 | d | 65.40 | f | 49.67 | i | 47.62 | j | 69.79 | d |
1981 | 45.00 | i | 52.37 | i | 55.96 | c | 72.09 | h | 73.22 | h | 91.15 | j | 95.07 | d | 91.35 | k | 84.12 | f | 61.73 | i | 51.07 | c | 41.57 | c | 60.92 | h |
1982 | 32.50 | e | 41.19 | b | 55.24 | f | 64.00 | d | 75.05 | i | 85.82 | h | 92.70 | h | 91.77 | i | 78.16 | e | 63.25 | o | 44.48 | g | 35.00 | l | 53.96 | h |
1983 | 32.60 | f | 40.33 | d | 53.81 | e | 59.09 | g | 70.83 | h | 82.96 | c | 91.21 | c | 92.61 | h | 83.27 | h | 67.56 | d | 44.80 | e | 26.20 | k | 63.45 | f |
1984 | 13.57 | c | 21.34 | 43.21 | b | 61.62 | a | 79.36 | c | 84.48 | g | 93.18 | c | 91.09 | h | 81.29 | i | 62.32 | c | 47.62 | f | 25.72 | b | 50.04 | d | |
1985 | 15.93 | b | 22.16 | c | 45.21 | b | 70.57 | b | 77.87 | a | 85.87 | o | 92.41 | b | 94.69 | e | 75.64 | e | 65.33 | d | 46.83 | a | 27.41 | n | 60.66 | b |
1986 | 26.46 | g | 47.11 | 63.03 | b | 65.33 | 75.97 | b | 90.76 | e | 90.29 | c | 91.46 | c | 77.27 | d | 68.48 | f | 52.23 | h | 41.19 | o | 75.15 | d | ||
1987 | 34.11 | m | 46.32 | f | 53.17 | g | 71.88 | f | 75.07 | d | 90.44 | e | 91.44 | d | 90.09 | i | 84.50 | b | 70.61 | c | 49.03 | a | 35.20 | f | 76.85 | f |
1988 | 20.52 | f | 32.89 | a | 50.19 | d | 70.15 | d | 78.65 | e | 92.46 | d | 98.27 | e | 92.46 | c | 79.78 | g | 76.12 | g | 52.18 | h | 34.25 | c | 68.67 | d |
1989 | 26.70 | a | 27.95 | f | 58.80 | a | 75.22 | g | 79.62 | b | 86.90 | 99.16 | 89.71 | 83.36 | b | 69.04 | d | 53.58 | f | 37.60 | f | 74.16 | d | |||
1990 | 35.08 | e | 36.09 | f | 54.93 | c | 72.40 | 77.64 | c | 92.31 | d | 94.90 | b | 94.69 | e | 84.89 | b | 68.72 | f | 48.88 | e | 26.45 | b | 68.22 | b | |
1991 | 19.18 | c | 36.72 | c | 54.96 | e | 64.46 | f | 78.17 | g | 90.12 | f | 94.41 | d | 91.56 | d | 80.95 | j | 68.62 | e | 44.61 | g | 30.77 | e | 56.60 | e |
1992 | 23.00 | e | 40.91 | f | 59.52 | d | 75.50 | d | 80.72 | f | 87.70 | g | 89.56 | f | 91.58 | e | 82.00 | k | 69.79 | q | 42.85 | c | 30.11 | l | 58.49 | g |
1993 | 27.88 | g | 29.67 | d | 47.46 | c | 63.64 | h | 77.50 | e | 83.52 | i | 92.62 | g | 87.91 | h | 80.59 | h | 62.29 | j | 39.58 | d | 32.23 | 45.29 | g | |
1994 | 42.40 | a | 42.39 | 60.69 | b | 69.28 | e | 83.96 | g | 94.15 | d | 98.93 | d | 94.58 | e | ----- | z | 61.67 | d | 41.72 | a | 37.39 | 64.32 | b | ||
1995 | 33.97 | 51.04 | a | 58.88 | f | 62.93 | b | 68.12 | e | 82.67 | i | 92.53 | a | 93.66 | b | 82.60 | e | 68.52 | f | 56.03 | a | 43.32 | 64.91 | c | ||
1996 | 35.53 | a | 42.21 | a | 57.00 | d | 66.68 | e | 80.11 | d | 90.72 | e | 96.63 | a | 95.15 | d | 79.73 | d | 63.82 | c | 47.21 | a | 35.14 | b | 65.83 | |
1997 | 28.00 | c | 31.81 | a | 53.00 | a | 59.52 | g | 78.59 | d | 89.46 | f | 94.61 | h | 89.92 | e | 77.41 | c | 65.74 | d | 45.19 | c | 31.53 | a | 55.69 | c |
1998 | 40.57 | c | 43.04 | b | 57.37 | d | 62.96 | b | 76.84 | 82.27 | 95.13 | 90.32 | 84.17 | 65.00 | 48.52 | a | 30.30 | a | 64.71 | |||||||
1999 | 35.32 | 44.52 | a | 61.07 | a | 60.50 | f | 73.19 | d | 86.40 | e | 94.04 | c | 89.70 | d | 80.42 | f | 72.96 | h | 58.04 | g | 37.93 | c | 65.27 | d | |
2000 | 42.10 | j | 45.86 | h | 57.00 | f | 72.05 | h | 84.27 | i | 91.87 | g | 97.11 | d | 93.92 | f | 80.57 | g | 66.30 | h | 41.32 | e | 39.00 | g | 69.22 | j |
2001 | 35.78 | d | 42.35 | e | 59.17 | g | 69.26 | g | 80.08 | f | 94.67 | f | 97.35 | e | 93.84 | f | 88.38 | d | 70.77 | e | 52.12 | e | 24.63 | d | 58.77 | e |
2002 | 28.88 | e | 37.23 | f | 54.04 | f | 72.16 | e | 79.93 | d | 94.54 | f | 99.57 | h | 93.86 | i | 80.10 | i | 63.61 | h | 44.30 | g | 23.65 | e | 51.16 | h |
2003 | 25.78 | d | 37.86 | f | 57.60 | f | 66.54 | f | 79.25 | g | 86.45 | h | 101.17 | b | 93.83 | h | 83.48 | i | 74.62 | e | 41.88 | d | 33.69 | e | 55.43 | g |
2004 | 24.04 | c | 34.40 | d | 65.25 | c | 69.92 | f | 79.43 | h | 88.00 | f | 93.04 | d | 89.29 | g | 82.64 | h | 66.64 | i | 45.76 | i | 37.61 | 50.87 | g | |
2005 | 34.13 | a | 43.00 | 56.87 | 66.46 | d | 77.30 | a | 82.97 | 97.97 | 89.59 | b | 80.79 | a | 69.77 | a | 51.83 | 39.03 | 65.81 | |||||||
2006 | 40.24 | f | 47.04 | 54.39 | 70.52 | a | 81.55 | 92.23 | 96.53 | a | 89.58 | 77.18 | b | 63.06 | 51.37 | c | 33.84 | 68.84 | a | |||||||
2007 | 16.66 | b | 39.57 | 60.94 | 68.43 | 79.68 | 91.27 | 98.00 | 94.77 | a | 81.03 | 66.77 | 53.77 | 18.06 | 64.08 | |||||||||||
2008 | 14.87 | 26.34 | 47.94 | 60.86 | b | 73.06 | 87.24 | a | 94.48 | 92.77 | 81.03 | a | 67.84 | 53.33 | 30.80 | a | 60.88 | |||||||||
2009 | 26.52 | 40.86 | 58.32 | 64.77 | 79.29 | 81.83 | 94.65 | 91.42 | 83.90 | 62.35 | 51.70 | 17.77 | 62.78 | |||||||||||||
2010 | 21.58 | 25.61 | 50.94 | 66.52 | a | 71.29 | 89.40 | 95.10 | 90.00 | 86.13 | 67.52 | 47.93 | 36.29 | 62.36 | ||||||||||||
2011 | 18.58 | 26.64 | 50.63 | a | 64.13 | 69.00 | a | 86.20 | 89.35 | 93.48 | 83.20 | 65.06 | 47.90 | ----- | z | 63.11 | a | |||||||||
2012 | 39.58 | 46.00 | 62.60 | a | 71.87 | 81.33 | a | ----- | z | 94.42 | 93.71 | 83.03 | 68.39 | 54.00 | 32.52 | 66.13 | a | |||||||||
2013 | 12.97 | 25.79 | 51.61 | 62.20 | 77.45 | 93.20 | 96.26 | 91.13 | 80.33 | 63.58 | 46.13 | 15.29 | 59.66 | |||||||||||||
2014 | 26.97 | 45.96 | 60.65 | 67.37 | 78.87 | 88.53 | 95.32 | 86.32 | 82.57 | 68.55 | 49.20 | 39.55 | 65.82 | |||||||||||||
2015 | 34.55 | 54.54 | 63.90 | 68.07 | 71.45 | 92.00 | 90.68 | 92.26 | 84.03 | 71.35 | 48.10 | 27.45 | 66.53 | |||||||||||||
2016 | 25.55 | 40.59 | 58.23 | 65.97 | 73.19 | 94.10 | 94.55 | 90.68 | 80.23 | 68.77 | 53.50 | 35.74 | 65.09 | |||||||||||||
2017 | 26.94 | 41.93 | 62.00 | 65.70 | 77.35 | 92.34 | a | 95.13 | 91.52 | 80.23 | 65.55 | 57.10 | 43.32 | 66.59 | ||||||||||||
2018 | 40.55 | 47.86 | 58.29 | 67.80 | 81.74 | 93.80 | 98.06 | 92.61 | 88.37 | 62.90 | 46.57 | 36.29 | 67.90 | |||||||||||||
2019 | 26.94 | 28.50 | 44.90 | 67.60 | 69.87 | 85.10 | 95.42 | 94.61 | 84.27 | 60.65 | 49.77 | 34.68 | 61.86 | |||||||||||||
2020 | 24.87 | 37.72 | 57.42 | 67.54 | b | 80.23 | 87.97 | 97.29 | 98.68 | 84.23 | 71.10 | 50.47 | 30.06 | 65.63 | ||||||||||||
2021 | 26.32 | 43.82 | 56.90 | 68.30 | 79.65 | 94.37 | 98.06 | 92.61 | 84.43 | 63.16 | 55.47 | 41.65 | 67.06 | |||||||||||||
2022 | 41.13 | 41.50 | 56.94 | 67.97 | 77.73 | a | 89.73 | 96.90 | 94.19 | 86.10 | 67.65 | 43.00 | 23.87 | 65.56 | ||||||||||||
2023 | 22.13 | 20.21 | 37.84 | 63.23 | 79.03 | 83.70 | 96.81 | 91.42 | 83.13 | 67.32 | 49.17 | 37.20 | a | 60.93 | ||||||||||||
2024 | 39.48 | 47.76 | 56.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.90 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.74 | 37.79 | 54.15 | 66.11 | 76.45 | 88.11 | 94.89 | 91.92 | 81.88 | 67.47 | 48.40 | 32.75 | 64.03 | |||||||||||||
S.D. | 8.21 | 8.74 | 6.17 | 3.82 | 3.94 | 4.00 | 2.40 | 2.41 | 3.46 | 4.31 | 5.29 | 7.05 | 2.36 | |||||||||||||
SKEW | -0.22 | -0.33 | -0.50 | 0.42 | -0.74 | -0.20 | -0.03 | -0.40 | -0.62 | 0.39 | -0.26 | -0.40 | -0.31 | |||||||||||||
MAX | 42.40 | 54.54 | 65.25 | 76.50 | 82.81 | 94.37 | 101.17 | 98.68 | 88.38 | 80.23 | 62.97 | 45.00 | 67.90 | |||||||||||||
MIN | 12.77 | 20.21 | 37.84 | 58.89 | 64.23 | 79.73 | 89.35 | 83.87 | 72.31 | 56.13 | 32.80 | 15.29 | 59.04 | |||||||||||||
YRS | 66 | 62 | 63 | 57 | 57 | 51 | 63 | 56 | 56 | 56 | 58 | 59 | 30 |