YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.23 | 95.52 | 86.07 | 78.90 | 63.47 | 56.48 | 78.94 | f | ||||||
1963 | 46.03 | 62.21 | 69.58 | 81.03 | 87.20 | a | 90.63 | 97.94 | 95.87 | 89.13 | 84.94 | 68.48 | e | 47.35 | 76.70 | |||||||||||
1964 | 56.35 | 45.34 | 63.03 | 76.70 | 86.77 | 92.27 | 100.77 | 97.19 | 84.63 | 77.84 | 58.87 | 51.71 | 74.29 | |||||||||||||
1965 | 57.68 | 56.71 | 55.19 | e | 78.97 | 83.23 | 85.73 | 93.97 | 92.58 | 83.23 | 77.38 | e | 67.85 | d | 55.45 | 74.00 | ||||||||||
1966 | 44.39 | 51.07 | 70.00 | 73.97 | 87.39 | 91.53 | 99.35 | 89.52 | 83.67 | 75.81 | 66.50 | 52.31 | b | 73.79 | ||||||||||||
1967 | 58.55 | 59.39 | 73.52 | 77.33 | 82.45 | 88.60 | 92.81 | 90.55 | 85.93 | 82.19 | 62.70 | 49.26 | 75.27 | |||||||||||||
1968 | 53.45 | 55.00 | 67.23 | 73.83 | 78.19 | 92.87 | 94.77 | 92.58 | 87.40 | 79.84 | 57.73 | d | 49.93 | a | 73.57 | |||||||||||
1969 | 55.94 | 55.32 | 51.23 | 77.13 | 83.81 | 90.50 | 98.97 | 96.68 | 83.37 | 67.30 | a | 62.97 | 52.55 | 72.98 | ||||||||||||
1970 | 49.94 | 62.57 | 57.32 | 71.73 | 88.23 | 90.83 | 96.39 | 97.13 | 88.63 | 69.68 | 62.73 | 58.61 | 74.48 | |||||||||||||
1971 | 51.35 | 53.86 | 67.48 | 74.50 | 84.26 | 93.73 | 96.19 | 90.90 | 84.77 | 76.26 | 59.93 | 50.19 | 73.62 | |||||||||||||
1972 | 53.87 | 63.31 | 74.35 | 80.37 | 83.19 | 93.27 | 92.94 | 92.71 | 85.73 | 74.00 | 48.97 | 44.42 | 73.93 | |||||||||||||
1973 | 42.55 | 55.86 | 60.26 | 66.03 | 79.23 | 93.30 | 94.58 | 95.42 | 81.53 | 78.65 | 63.50 | 52.32 | 71.94 | |||||||||||||
1974 | 47.48 | 62.64 | 71.68 | 77.20 | 91.55 | 94.17 | 99.94 | 89.16 | 80.60 | 75.10 | 59.53 | 51.00 | 75.00 | |||||||||||||
1975 | 51.97 | 50.18 | 63.87 | 73.63 | 83.55 | 90.70 | 91.97 | 93.58 | 84.50 | 81.23 | 59.20 | 56.81 | 73.43 | |||||||||||||
1976 | 54.03 | 65.07 | 67.71 | 75.87 | 78.68 | 93.33 | 95.03 | 94.90 | 85.53 | 70.29 | 59.00 | 55.68 | 74.59 | |||||||||||||
1977 | 43.23 | 61.39 | 67.74 | 73.97 | 82.68 | 94.47 | 98.77 | 93.10 | 89.50 | 79.48 | 64.80 | 56.48 | 75.47 | |||||||||||||
1978 | 42.19 | 39.86 | 66.77 | 79.33 | 77.65 | 91.77 | 100.81 | 94.65 | 88.10 | 76.84 | 58.13 | 48.87 | 72.08 | |||||||||||||
1979 | 35.48 | 55.32 | 63.48 | 73.37 | 78.35 | 88.57 | 94.52 | 90.55 | 88.40 | 81.87 | a | 55.40 | 54.97 | 71.69 | ||||||||||||
1980 | 47.48 | 52.28 | 62.06 | 70.47 | 77.10 | 94.13 | 101.94 | 96.19 | 88.33 | 76.94 | 58.70 | 55.97 | 73.47 | |||||||||||||
1981 | 53.97 | 61.82 | 62.74 | 79.77 | 78.81 | 95.70 | 94.77 | 89.65 | 86.17 | 71.58 | 62.67 | 53.03 | 74.22 | |||||||||||||
1982 | 54.13 | 47.27 | b | 63.90 | 73.00 | a | 77.05 | i | 84.80 | 92.10 | 92.64 | c | 86.36 | b | 75.13 | 58.79 | a | 48.42 | 70.59 | a | ||||||
1983 | 47.97 | 47.65 | b | 57.71 | 67.33 | 77.21 | c | 86.53 | 96.32 | 99.30 | a | 90.72 | a | 75.68 | 62.10 | 37.03 | a | 70.46 | ||||||||
1984 | 46.90 | b | 60.76 | 60.48 | 67.48 | a | 82.90 | a | 91.15 | c | 95.48 | 92.43 | a | 84.34 | a | 68.90 | 60.77 | 50.68 | 71.86 | |||||||
1985 | 46.29 | 52.61 | 64.32 | 75.10 | 82.40 | a | 90.25 | b | 96.94 | 95.32 | 83.97 | a | 72.03 | 56.07 | 47.52 | 71.90 | ||||||||||
1986 | 60.61 | 56.14 | 70.42 | 76.90 | a | 81.32 | 88.00 | 96.00 | 89.40 | a | 83.97 | 69.23 | 57.93 | 48.84 | 73.23 | |||||||||||
1987 | 47.97 | 54.14 | 61.00 | 73.13 | 79.26 | 86.33 | 91.60 | a | 91.58 | 81.67 | 73.87 | 58.73 | 47.13 | 70.53 | ||||||||||||
1988 | 42.32 | 54.10 | 61.00 | 72.76 | a | 78.84 | 89.80 | 90.26 | 92.84 | 83.22 | c | 72.97 | 63.90 | 54.71 | 71.39 | |||||||||||
1989 | 56.77 | 42.86 | 71.06 | 78.79 | a | 81.48 | d | 83.68 | e | ----- | z | ----- | z | 79.60 | 76.06 | 64.10 | 43.13 | 67.75 | b | |||||||
1990 | 49.90 | 49.68 | 56.94 | 69.83 | 76.41 | b | 95.79 | a | 90.20 | a | 89.84 | 84.07 | a | 71.23 | a | 64.28 | a | 44.52 | 70.22 | |||||||
1991 | 39.87 | 61.39 | 63.23 | a | 72.07 | a | 80.35 | 86.64 | b | 90.00 | b | 89.18 | c | 80.17 | a | 76.00 | a | 51.87 | 47.13 | 69.83 | ||||||
1992 | 50.59 | b | 56.64 | a | 64.50 | a | 70.28 | a | 75.03 | b | 81.97 | 89.60 | a | 83.75 | c | 82.76 | a | 75.10 | 50.40 | 43.74 | 68.70 | |||||
1993 | 38.35 | 46.82 | 58.63 | a | 66.90 | 78.07 | c | 85.97 | 90.90 | b | 89.97 | a | 80.60 | 67.87 | a | 54.27 | 51.77 | 67.51 | ||||||||
1994 | 48.90 | a | 49.00 | a | 60.45 | 69.47 | 76.68 | 93.37 | 92.23 | 90.37 | a | 82.93 | a | 71.45 | 57.10 | 54.35 | 70.52 | |||||||||
1995 | 48.81 | 57.43 | 58.06 | 65.60 | 70.90 | b | 83.27 | 90.94 | 91.81 | 79.90 | 73.33 | a | 62.17 | 47.40 | a | 69.13 | ||||||||||
1996 | 47.94 | 54.83 | 56.87 | 71.07 | 84.00 | a | 88.47 | 88.55 | 84.87 | a | 76.57 | 70.23 | 57.36 | b | 48.77 | 69.13 | ||||||||||
1997 | 44.58 | 48.32 | 65.30 | a | 60.43 | b | 74.57 | a | 84.30 | 93.61 | 88.00 | b | 85.50 | j | 70.03 | a | 54.47 | 42.26 | 65.99 | a | ||||||
1998 | 49.27 | a | 50.96 | c | 53.17 | a | 66.50 | 84.23 | a | 91.90 | 94.93 | a | 90.10 | a | 91.78 | c | 73.40 | a | 59.77 | 48.97 | 71.25 | |||||
1999 | 50.29 | 60.93 | 54.79 | b | 67.40 | 74.83 | a | 85.67 | 92.03 | a | 93.30 | a | 79.60 | 75.16 | 69.66 | a | 51.45 | 71.26 | ||||||||
2000 | 53.03 | 62.04 | a | 59.23 | 70.23 | 82.00 | 83.15 | c | 92.80 | a | 97.03 | 89.70 | 70.29 | 51.97 | 42.90 | 71.20 | ||||||||||
2001 | 44.03 | 45.68 | 54.03 | a | 73.53 | 77.26 | 89.20 | 97.77 | 93.16 | 84.45 | a | 73.68 | 62.07 | 54.06 | 70.74 | |||||||||||
2002 | 50.19 | 50.61 | 60.13 | 72.11 | b | 80.00 | a | 89.82 | b | 91.77 | a | 91.77 | 83.50 | 63.52 | 56.93 | a | 45.03 | 69.61 | ||||||||
2003 | 51.58 | 48.00 | 60.17 | b | 73.83 | 80.36 | c | 82.76 | a | ----- | z | 94.48 | 80.24 | a | 75.76 | f | 65.82 | b | 52.53 | a | 68.98 | b | ||||
2004 | 49.81 | 50.41 | 65.32 | 68.00 | 84.93 | a | 86.03 | 87.63 | a | 85.77 | a | 83.27 | 70.93 | d | 52.04 | e | 49.75 | g | 71.29 | a | ||||||
2005 | 48.10 | a | 52.35 | b | 57.60 | a | 70.44 | l | 78.00 | d | 87.97 | a | 92.27 | e | 89.33 | a | 88.64 | b | 72.93 | b | 67.33 | 51.87 | 71.49 | a | ||
2006 | 58.32 | 55.64 | 62.00 | 78.80 | 84.13 | 93.10 | 94.68 | 89.48 | 79.00 | 71.74 | 65.87 | 47.70 | a | 73.37 | ||||||||||||
2007 | 40.23 | 46.39 | 66.90 | 63.47 | 77.13 | 84.30 | 91.94 | 94.29 | 85.13 | 77.81 | 62.40 | 45.48 | 69.62 | |||||||||||||
2008 | 51.00 | 53.03 | 61.81 | 71.00 | 82.48 | 93.20 | 90.13 | 88.13 | 80.17 | 71.29 | 63.70 | 50.03 | 71.33 | |||||||||||||
2009 | 53.65 | 60.75 | 63.87 | 68.97 | 76.10 | 89.90 | 94.03 | 91.43 | a | 80.93 | 63.42 | 67.14 | a | 44.55 | 71.23 | |||||||||||
2010 | 48.87 | 40.43 | 59.71 | 71.73 | 76.87 | 91.20 | 90.90 | 93.26 | 89.50 | 76.03 | 61.60 | 50.84 | 70.91 | |||||||||||||
2011 | 49.03 | 50.50 | 64.03 | 75.10 | 80.77 | 96.23 | 100.19 | 99.00 | 84.87 | 73.94 | 60.03 | 41.65 | 72.95 | |||||||||||||
2012 | 56.06 | 49.79 | 71.45 | 76.23 | 84.55 | 93.33 | 97.16 | 93.77 | 85.77 | 70.77 | 67.27 | 52.58 | 74.90 | |||||||||||||
2013 | 47.74 | 49.61 | 61.48 | 65.50 | 81.97 | 92.33 | 90.19 | 90.58 | 86.70 | 73.29 | 56.73 | 46.35 | 70.21 | |||||||||||||
2014 | 50.16 | 46.50 | 61.29 | 72.00 | 81.17 | a | 86.80 | 89.94 | 92.77 | 81.97 | 76.65 | 57.87 | 48.81 | 70.49 | ||||||||||||
2015 | 45.06 | 51.71 | 62.61 | 71.37 | 73.00 | 88.87 | 93.13 | 89.48 | 89.37 | 73.90 | 59.83 | 49.94 | 70.69 | |||||||||||||
2016 | 49.26 | 60.34 | 67.52 | 70.70 | 75.65 | 91.83 | 97.29 | 89.55 | 85.67 | 81.37 | a | 66.93 | 48.55 | 73.72 | ||||||||||||
2017 | 48.19 | 64.00 | 69.16 | 69.60 | 77.52 | 91.43 | 95.45 | 85.65 | 84.27 | 72.94 | 64.73 | 52.42 | 72.95 | |||||||||||||
2018 | 53.39 | 52.46 | 67.06 | 68.13 | 88.42 | 93.13 | 94.97 | 92.26 | 84.37 | 66.83 | a | 55.23 | 51.35 | 72.30 | ||||||||||||
2019 | 49.97 | 53.07 | 57.61 | 73.10 | 74.00 | 87.13 | 94.35 | 96.65 | 91.03 | 66.65 | 58.77 | 55.19 | 71.46 | |||||||||||||
2020 | 54.39 | 50.18 | a | 66.10 | 70.63 | 82.74 | 94.77 | 97.26 | 94.06 | 82.90 | 72.93 | a | 65.33 | 51.58 | 73.57 | |||||||||||
2021 | 50.77 | 43.04 | 62.77 | 69.27 | 76.87 | 91.47 | 91.65 | 94.65 | 91.43 | 77.87 | 67.00 | 63.16 | 73.33 | |||||||||||||
2022 | 52.16 | 50.54 | 63.87 | 75.20 | 84.74 | 91.57 | 99.19 | 93.52 | 90.73 | 74.77 | 55.80 | 52.35 | 73.70 | |||||||||||||
2023 | 53.06 | 55.79 | 61.13 | a | 73.30 | 79.90 | a | 85.57 | 94.52 | 96.06 | 89.57 | 76.39 | 64.13 | 54.81 | 73.69 | |||||||||||
2024 | 44.61 | 61.10 | 64.10 | 74.13 | 77.85 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.99 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.52 | 53.62 | 63.03 | 72.38 | 80.52 | 89.82 | 94.34 | 92.28 | 84.93 | 74.00 | 60.67 | 50.25 | 72.24 | |||||||||||||
S.D. | 5.14 | 6.19 | 5.09 | 4.38 | 4.19 | 3.70 | 3.39 | 3.34 | 3.57 | 4.43 | 4.80 | 4.67 | 1.96 | |||||||||||||
SKEW | -0.32 | -0.06 | 0.05 | -0.19 | 0.20 | -0.35 | 0.29 | -0.24 | 0.04 | -0.05 | -0.31 | -0.15 | -0.11 | |||||||||||||
MAX | 60.61 | 65.07 | 74.35 | 81.03 | 91.55 | 96.23 | 101.94 | 99.30 | 91.78 | 84.94 | 69.66 | 63.16 | 76.70 | |||||||||||||
MIN | 35.48 | 39.86 | 51.23 | 60.43 | 70.90 | 81.97 | 87.63 | 83.75 | 76.57 | 63.42 | 48.97 | 37.03 | 67.51 | |||||||||||||
YRS | 62 | 62 | 62 | 61 | 60 | 61 | 60 | 61 | 61 | 61 | 62 | 61 | 55 |