YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | 25.16 | 42.43 | 53.03 | 68.97 | 76.48 | 81.77 | 87.48 | d | 86.68 | 78.63 | 60.16 | 54.13 | 43.74 | 63.22 | ||||||||||||
1950 | 24.48 | 41.61 | 51.10 | 61.10 | 70.16 | 75.80 | 89.00 | 88.58 | 79.53 | 61.55 | 48.63 | 45.39 | 61.41 | |||||||||||||
1951 | 40.58 | 45.89 | 50.74 | 66.80 | 72.19 | 78.67 | 89.97 | 85.87 | 79.40 | 60.97 | 47.87 | 36.26 | 62.93 | |||||||||||||
1952 | 36.90 | 47.28 | 53.03 | 68.37 | 72.48 | 77.23 | 90.29 | 87.35 | 81.50 | 71.32 | 42.30 | 42.68 | 64.23 | |||||||||||||
1953 | 53.10 | 49.07 | 55.13 | 60.77 | 68.23 | 72.33 | 89.45 | 85.45 | 82.10 | 66.94 | 53.40 | 47.55 | 65.29 | |||||||||||||
1954 | 40.03 | 45.14 | 51.87 | 61.47 | 72.74 | 74.20 | 87.16 | 81.32 | 74.97 | 61.97 | 54.80 | 41.61 | 62.27 | |||||||||||||
1955 | 38.55 | 44.07 | 48.74 | 56.43 | 65.61 | 80.87 | 83.90 | 88.26 | 77.83 | 63.35 | 41.23 | 40.00 | 60.74 | |||||||||||||
1956 | 41.39 | 34.76 | 52.81 | 66.93 | 73.06 | 76.00 | 91.35 | 85.87 | 79.27 | 60.94 | 42.90 | 42.87 | 62.35 | |||||||||||||
1957 | 26.16 | 43.61 | 51.68 | 63.97 | 72.39 | 79.70 | 85.48 | 83.00 | 81.69 | a | 57.10 | 50.57 | 47.94 | 61.94 | ||||||||||||
1958 | 44.74 | 53.50 | 53.74 | 59.57 | 78.29 | 83.03 | a | 92.71 | 92.42 | 76.00 | 67.90 | 49.80 | 43.81 | 66.29 | ||||||||||||
1959 | 44.00 | 43.96 | 55.13 | 64.13 | 67.68 | 79.13 | 90.81 | 82.77 | 72.10 | 64.32 | 47.73 | 39.81 | 62.63 | |||||||||||||
1960 | 32.77 | 47.45 | 54.32 | 62.87 | 67.68 | 81.37 | 95.26 | 82.58 | 79.33 | 65.61 | 49.70 | 34.74 | 62.81 | |||||||||||||
1961 | 43.81 | 53.11 | 55.52 | 61.43 | 69.87 | 87.10 | 92.39 | 92.77 | 73.30 | 62.03 | 44.60 | 42.00 | 64.83 | |||||||||||||
1962 | 39.71 | 45.57 | 51.68 | 66.93 | 64.00 | 79.60 | 88.48 | 82.77 | 78.50 | 62.29 | 52.43 | 45.58 | 63.13 | |||||||||||||
1963 | 34.97 | 48.25 | 56.87 | 59.10 | 72.06 | 78.83 | 83.52 | 87.58 | 82.90 | 68.48 | 51.40 | 36.90 | 63.41 | |||||||||||||
1964 | 47.32 | 51.28 | 53.71 | 60.53 | 70.16 | 78.27 | 87.84 | 82.74 | 74.70 | 62.90 | 46.57 | 40.55 | 63.05 | |||||||||||||
1965 | 41.61 | 51.04 | 55.90 | 66.57 | 71.35 | 80.87 | 91.13 | 87.03 | 75.20 | 71.19 | 53.33 | 45.10 | 65.86 | |||||||||||||
1966 | 44.10 | 47.21 | 56.06 | 64.33 | 74.55 | 76.80 | 85.61 | 86.68 | 80.30 | 65.19 | 51.77 | 46.65 | 64.94 | |||||||||||||
1967 | 48.77 | 51.71 | 53.23 | 56.30 | 69.65 | 83.97 | 92.39 | 96.32 | 84.50 | 66.81 | 50.13 | 43.58 | 66.45 | |||||||||||||
1968 | 44.81 | 49.10 | 59.45 | 59.40 | 70.39 | 79.30 | 92.29 | 81.03 | 75.77 | 62.29 | 49.57 | 38.97 | 63.53 | |||||||||||||
1969 | 28.87 | 40.57 | 55.13 | 61.73 | 74.39 | 83.87 | 87.29 | 85.97 | 78.07 | 59.97 | 51.50 | 39.90 | 62.27 | |||||||||||||
1970 | 38.65 | 46.64 | 53.65 | 57.03 | 71.10 | 83.67 | 91.81 | 90.84 | 71.07 | 60.23 | 49.20 | 42.71 | 63.05 | |||||||||||||
1971 | 45.90 | 47.14 | 50.94 | 60.40 | 71.23 | 71.73 | 91.45 | 93.26 | 71.37 | 61.03 | 50.37 | 42.06 | 63.07 | |||||||||||||
1972 | 38.68 | 41.83 | 56.94 | 58.97 | 72.71 | 80.20 | 88.13 | 90.45 | 74.73 | 62.97 | 49.60 | 34.94 | 62.51 | |||||||||||||
1973 | 39.10 | 45.07 | 56.10 | 64.60 | 76.10 | 80.67 | 92.61 | 87.00 | 75.77 | 63.26 | 47.53 | 45.74 | 64.46 | |||||||||||||
1974 | 34.87 | 49.46 | 54.06 | 59.87 | 66.42 | 85.83 | 87.94 | 89.77 | 83.83 | 67.58 | 51.43 | 47.87 | 64.91 | |||||||||||||
1975 | 41.77 | 43.89 | 51.94 | 59.17 | 72.00 | 78.13 | 92.45 | 83.42 | 83.37 | 63.81 | 51.80 | 44.26 | 63.83 | |||||||||||||
1976 | 44.58 | 46.86 | 52.13 | 60.00 | 71.71 | 76.40 | 89.52 | 82.32 | 82.73 | 66.58 | 49.23 | 42.45 | 63.71 | |||||||||||||
1977 | 29.26 | 50.29 | 53.61 | 71.13 | 67.61 | 86.03 | 87.03 | 92.23 | 72.57 | 64.39 | 49.90 | 40.90 | 63.75 | |||||||||||||
1978 | 37.23 | 45.25 | 56.26 | 57.67 | 66.10 | 82.13 | 89.65 | 84.13 | 74.27 | 67.87 | 43.17 | 38.32 | 61.84 | |||||||||||||
1979 | 25.45 | 47.11 | 59.16 | 63.87 | 74.65 | 81.73 | 90.81 | 86.13 | 82.40 | 68.29 | 43.53 | 46.68 | 64.15 | |||||||||||||
1980 | 33.10 | 43.48 | 50.90 | 66.60 | 68.90 | 72.93 | 87.35 | 82.13 | 77.23 | 63.03 | 49.77 | 46.35 | 61.82 | |||||||||||||
1981 | 41.19 | 46.50 | 56.97 | 63.33 | 68.00 | 75.23 | 88.10 | 95.26 | 82.20 | 65.06 | 53.13 | 43.16 | 64.85 | |||||||||||||
1982 | 41.77 | 48.39 | 54.77 | 60.07 | 70.58 | 82.77 | 88.77 | 88.19 | 76.23 | 63.26 | 45.40 | 42.19 | 63.53 | |||||||||||||
1983 | 49.77 | 52.00 | 57.68 | 63.53 | 74.00 | 76.50 | 83.94 | 89.55 | 72.83 | 63.90 | 53.70 | 29.61 | 63.92 | |||||||||||||
1984 | 40.29 | 47.59 | 57.03 | 60.17 | 68.45 | 77.47 | 94.00 | 90.29 | 73.70 | 61.45 | 49.70 | 34.81 | 62.91 | |||||||||||||
1985 | 29.06 | 43.00 | 55.39 | 67.50 | 75.10 | 83.23 | 98.48 | 85.16 | 70.70 | 63.00 | 32.47 | 23.97 | 60.59 | |||||||||||||
1986 | 42.19 | 45.36 | 57.90 | 61.17 | 70.42 | 85.20 | 82.74 | 93.77 | 71.03 | 67.32 | 48.80 | 35.26 | 63.43 | |||||||||||||
1987 | 36.97 | 46.29 | 57.29 | 68.47 | 74.77 | 85.77 | 84.97 | 88.68 | 83.17 | 68.84 | 50.59 | a | 39.81 | 65.47 | ||||||||||||
1988 | 38.35 | 51.31 | 55.65 | 64.40 | 71.58 | 78.67 | 89.81 | 88.45 | 78.70 | 72.06 | 51.47 | 37.77 | 64.85 | |||||||||||||
1989 | 42.65 | 30.89 | 49.00 | 65.07 | 69.10 | 82.33 | 88.06 | 83.45 | 80.60 | 64.35 | 52.40 | 38.00 | 62.16 | |||||||||||||
1990 | 44.68 | 45.07 | 57.32 | 67.60 | 68.19 | 78.80 | 93.10 | 87.48 | 85.87 | 62.42 | 53.80 | 34.10 | 64.87 | |||||||||||||
1991 | 37.35 | 53.96 | 53.06 | 61.83 | 65.81 | 73.50 | 89.32 | 91.81 | 82.93 | 65.23 | 47.90 | 41.55 | 63.69 | |||||||||||||
1992 | 46.06 | 49.76 | 60.84 | 65.73 | 79.23 | 87.47 | 87.13 | 89.23 | 75.17 | 65.74 | 45.67 | 38.13 | 65.85 | |||||||||||||
1993 | 31.77 | a | 35.46 | 51.90 | 61.03 | 74.52 | 76.67 | 80.00 | 85.13 | 81.77 | 67.84 | 45.40 | 41.90 | 61.12 | ||||||||||||
1994 | 48.58 | 43.43 | 60.32 | 67.60 | 75.10 | 81.80 | 94.61 | 90.71 | 84.23 | 64.23 | 48.93 | 43.77 | 66.94 | |||||||||||||
1995 | 41.90 | 50.55 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.90 | k | |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.30 | u | 52.40 | 44.00 | 48.20 | j | ||
1999 | 47.87 | 50.21 | 54.65 | 60.87 | 67.16 | 77.47 | 87.13 | 88.13 | 78.50 | 64.23 | 55.20 | 42.90 | 64.53 | |||||||||||||
2000 | 40.70 | a | 45.48 | 53.84 | 66.70 | 70.06 | 79.70 | 88.71 | 87.13 | 74.07 | 60.81 | 41.73 | 35.06 | 62.00 | ||||||||||||
2001 | 36.97 | 42.71 | 55.23 | 58.23 | 73.32 | 75.50 | 86.43 | a | 90.52 | 81.37 | 62.16 | 49.70 | 42.48 | 62.89 | ||||||||||||
2002 | 43.35 | 48.43 | 49.45 | 62.17 | a | 68.13 | 80.03 | 91.90 | 85.65 | 77.47 | 60.70 | a | 48.53 | 44.71 | 63.38 | |||||||||||
2003 | 45.84 | 46.57 | 57.66 | b | 60.73 | 69.45 | 82.63 | 92.73 | a | 88.81 | 79.20 | 67.71 | 46.93 | 40.77 | 64.92 | |||||||||||
2004 | 34.70 | a | 48.21 | 63.00 | 67.33 | 67.55 | 79.13 | 90.74 | 88.45 | 74.20 | 64.77 | 49.27 | 43.65 | 64.25 | ||||||||||||
2005 | 40.81 | 49.54 | 59.32 | 63.30 | 71.61 | 77.37 | 90.90 | 90.29 | 76.17 | 64.81 | 46.27 | 36.58 | 63.91 | |||||||||||||
2006 | 50.23 | 45.71 | 54.42 | 61.70 | 72.81 | 79.63 | 93.32 | 88.00 | 78.77 | 62.58 | 51.20 | 38.97 | 64.78 | |||||||||||||
2007 | 37.65 | 46.14 | 57.68 | 62.23 | 74.42 | 79.50 | 93.35 | 86.71 | 77.27 | 61.94 | 48.70 | 43.84 | 64.12 | |||||||||||||
2008 | 41.33 | a | 48.83 | 52.39 | 59.00 | 71.81 | 78.50 | 89.23 | 87.23 | 78.90 | 63.81 | 50.93 | 36.93 | a | 63.24 | |||||||||||
2009 | 41.03 | 43.18 | 50.68 | 62.30 | 73.71 | 80.27 | 93.48 | 88.23 | 81.93 | 58.97 | 53.57 | 34.61 | 63.50 | |||||||||||||
2010 | 46.94 | 50.71 | 57.94 | 62.10 | 66.03 | 75.53 | 89.52 | 86.71 | 77.50 | 64.29 | 47.10 | 41.03 | 63.78 | |||||||||||||
2011 | 44.03 | 45.93 | 55.81 | 56.37 | 66.03 | 74.70 | 85.59 | b | 89.38 | b | 83.37 | 62.87 | 51.53 | 39.65 | 62.94 | |||||||||||
2012 | 45.23 | 44.50 | a | 54.48 | 64.07 | 69.55 | 74.33 | 89.87 | 91.16 | 81.13 | 64.42 | 51.40 | 46.16 | 64.69 | ||||||||||||
2013 | 37.00 | 48.96 | 57.48 | 62.10 | 74.29 | 80.37 | 93.94 | 90.29 | 78.83 | 61.19 | 46.87 | 39.07 | a | 64.20 | ||||||||||||
2014 | 41.03 | 39.89 | 57.55 | 63.20 | 74.42 | 79.30 | 95.23 | 90.16 | 80.80 | 70.03 | 47.13 | 44.39 | 65.26 | |||||||||||||
2015 | 42.48 | 54.50 | 62.65 | 64.23 | 75.87 | 90.33 | 93.03 | 90.03 | 76.37 | 68.61 | 45.50 | 43.81 | 67.28 | |||||||||||||
2016 | 42.16 | 52.72 | 57.94 | 68.57 | 73.00 | 82.13 | 86.00 | 89.03 | 74.70 | 62.10 | 56.53 | 36.35 | 65.10 | |||||||||||||
2017 | 28.23 | a | 43.36 | 55.84 | 62.20 | 73.23 | 82.10 | 94.80 | a | 92.26 | 78.57 | 63.29 | 51.70 | 37.13 | 63.56 | |||||||||||
2018 | 47.45 | 46.61 | 56.00 | 63.13 | 76.61 | 79.97 | 93.97 | 88.94 | 76.70 | 62.81 | 49.00 | 45.52 | 65.56 | |||||||||||||
2019 | 43.55 | 34.14 | 45.74 | 63.17 | 74.16 | 80.83 | 87.23 | 89.94 | 75.53 | 58.77 | 46.30 | 40.26 | 61.64 | |||||||||||||
2020 | 48.26 | 50.00 | 52.39 | 63.40 | 70.42 | 77.00 | 89.19 | 88.32 | 79.97 | 64.48 | 50.10 | 41.19 | 64.56 | |||||||||||||
2021 | 46.48 | 40.50 | 56.52 | 65.37 | 72.55 | 88.20 | 93.90 | 86.74 | 77.43 | 63.90 | 52.53 | 41.35 | 65.46 | |||||||||||||
2022 | 39.26 | 47.79 | 56.13 | 55.20 | 63.97 | 76.30 | 91.61 | 92.84 | 80.40 | 68.74 | 40.43 | 34.42 | 62.26 | |||||||||||||
2023 | 44.55 | 44.54 | 51.03 | 59.33 | 75.45 | 81.67 | 91.58 | 87.23 | 75.67 | 63.00 | 45.40 | 43.71 | 63.60 | |||||||||||||
2024 | 36.13 | 48.10 | 56.70 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.98 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.22 | 46.25 | 54.89 | 62.70 | 71.30 | 79.80 | 89.84 | 87.94 | 78.15 | 64.20 | 48.96 | 40.84 | 63.75 | |||||||||||||
S.D. | 6.36 | 4.52 | 3.22 | 3.48 | 3.40 | 3.87 | 3.43 | 3.36 | 3.72 | 3.12 | 4.00 | 4.42 | 1.44 | |||||||||||||
SKEW | -0.68 | -0.93 | -0.04 | 0.12 | -0.10 | 0.30 | -0.28 | 0.01 | -0.09 | 0.44 | -1.17 | -0.98 | 0.10 | |||||||||||||
MAX | 53.10 | 54.50 | 63.00 | 71.13 | 79.23 | 90.33 | 98.48 | 96.32 | 85.87 | 72.06 | 56.53 | 47.94 | 67.28 | |||||||||||||
MIN | 24.48 | 30.89 | 45.74 | 55.20 | 63.97 | 71.73 | 80.00 | 81.03 | 70.70 | 57.10 | 32.47 | 23.97 | 60.59 | |||||||||||||
YRS | 73 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 71 |