YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.81 | e | 39.81 | k |
1955 | 34.26 | 41.32 | 51.16 | 56.57 | 71.00 | 83.23 | 89.29 | 95.32 | 81.87 | 70.74 | 49.67 | 43.35 | 63.98 | |||||||||||||
1956 | 41.87 | 39.14 | 55.06 | 64.73 | 71.97 | 82.50 | 92.52 | 88.35 | 83.07 | 63.10 | 53.10 | 43.68 | 64.92 | |||||||||||||
1957 | 35.87 | 50.21 | 54.68 | 61.57 | 69.61 | 84.87 | 92.87 | 88.90 | 84.77 | 60.03 | 46.83 | 44.26 | 64.54 | |||||||||||||
1958 | 41.74 | 50.75 | 48.45 | 59.70 | 81.87 | 81.27 | 91.52 | 94.10 | 81.73 | 74.00 | 54.57 | 50.06 | 67.48 | |||||||||||||
1959 | 45.52 | 45.25 | 56.45 | 69.53 | 67.65 | 88.10 | 97.00 | 90.29 | 76.97 | 68.35 | 57.43 | 42.81 | 67.11 | |||||||||||||
1960 | 36.13 | 41.41 | 57.68 | 65.03 | 71.48 | 89.20 | 96.90 | 90.06 | 85.33 | 68.87 | 49.00 | 43.42 | 66.21 | |||||||||||||
1961 | 46.55 | 49.29 | 54.19 | 64.57 | 71.35 | 88.90 | 95.77 | 92.45 | 74.37 | 66.81 | 50.27 | 39.52 | 66.17 | |||||||||||||
1962 | 34.52 | 38.61 | 51.00 | 71.23 | 68.81 | 85.80 | 93.19 | 90.65 | 84.40 | 68.58 | 54.10 | 45.23 | 65.51 | |||||||||||||
1963 | 40.74 | 55.32 | 52.94 | 56.73 | 74.90 | 76.70 | 88.58 | 89.84 | 83.50 | 70.68 | 50.90 | 43.06 | 65.32 | |||||||||||||
1964 | 39.71 | 45.17 | 51.81 | 61.23 | 71.32 | 75.43 | 92.97 | 89.45 | 78.43 | 73.65 | 48.27 | 42.03 | 64.12 | |||||||||||||
1965 | 39.39 | 49.07 | 55.58 | 64.20 | 68.97 | 80.77 | 91.77 | 84.45 | 74.73 | 74.97 | 52.30 | 39.97 | 64.68 | |||||||||||||
1966 | 42.65 | 43.86 | 58.23 | 68.87 | 81.16 | 83.43 | 92.68 | 92.26 | 82.03 | 68.48 | 51.70 | 38.32 | 66.97 | |||||||||||||
1967 | 42.77 | 50.68 | 53.10 | 51.97 | 73.90 | 78.97 | 93.81 | 94.90 | 83.77 | 68.84 | 54.07 | 37.29 | 65.34 | |||||||||||||
1968 | 42.26 | 54.59 | 59.48 | 62.40 | 73.32 | 84.97 | 96.48 | 82.45 | 80.43 | 66.74 | 46.30 | 38.84 | 65.69 | |||||||||||||
1969 | 39.32 | 41.61 | 51.71 | 65.77 | 79.13 | 78.97 | 93.13 | 92.97 | 82.47 | 58.84 | 54.07 | 43.03 | 65.08 | |||||||||||||
1970 | 40.32 | 53.00 | 53.65 | 56.03 | 73.90 | 82.50 | 92.90 | 93.90 | 77.10 | 63.48 | 50.63 | 35.94 | 64.45 | |||||||||||||
1971 | 42.55 | 49.36 | 51.74 | 61.57 | 69.39 | 78.40 | 91.42 | 93.47 | a | 75.67 | 59.45 | 48.93 | 34.94 | 63.07 | ||||||||||||
1972 | 34.55 | 47.31 | 60.74 | 62.20 | 78.00 | 84.03 | 93.26 | 91.61 | 77.13 | 63.39 | 47.03 | 32.90 | 64.35 | |||||||||||||
1973 | 35.13 | 47.57 | 50.68 | 62.13 | 77.97 | 85.33 | 93.65 | 89.48 | 79.70 | 66.61 | 48.47 | 44.16 | 65.07 | |||||||||||||
1974 | 37.77 | 47.14 | 54.26 | 61.00 | 74.13 | 89.43 | 90.45 | 90.48 | 86.37 | 66.90 | 53.13 | 39.68 | 65.90 | |||||||||||||
1975 | 39.10 | 43.14 | 49.10 | 52.90 | 71.29 | 80.67 | 92.19 | 85.16 | 84.90 | 64.48 | 49.27 | 45.19 | 63.12 | |||||||||||||
1976 | 43.58 | 51.24 | 53.29 | 62.40 | 79.29 | 79.37 | 91.10 | 81.03 | 79.63 | 67.61 | 57.93 | 44.03 | 65.88 | |||||||||||||
1977 | 35.97 | 49.75 | 50.74 | 69.60 | 63.45 | 87.07 | 92.29 | 89.61 | 79.20 | 70.26 | 53.37 | 44.87 | 65.51 | |||||||||||||
1978 | 41.94 | 46.61 | 59.45 | 58.37 | 68.45 | 81.47 | 91.29 | 89.26 | 74.43 | 74.06 | 47.50 | 37.52 | 64.20 | |||||||||||||
1979 | 33.68 | 42.68 | 55.55 | 61.17 | 74.68 | 84.20 | 91.29 | 86.16 | 83.57 | 69.29 | 47.63 | 42.68 | 64.38 | |||||||||||||
1980 | 38.94 | 48.50 | a | 50.39 | 65.37 | 69.35 | 77.90 | ----- | z | 89.26 | ----- | z | ----- | z | 53.54 | d | 46.84 | 60.01 | c | |||||||
1981 | 46.43 | a | 47.86 | 54.43 | a | 67.57 | b | 69.67 | d | 85.80 | e | 93.36 | c | 94.15 | e | 84.38 | d | 59.38 | g | 53.50 | 46.87 | a | 67.64 | a | ||
1982 | 38.29 | 46.00 | a | 51.13 | 60.44 | c | 73.67 | d | 80.08 | f | 89.45 | i | 90.26 | d | 72.92 | d | 62.23 | 44.93 | c | 39.65 | e | 57.95 | b | |||
1983 | 42.57 | a | 47.89 | a | 50.14 | b | 57.33 | 70.96 | c | 78.70 | 86.35 | 86.19 | 79.45 | a | 67.16 | 48.47 | 38.87 | a | 62.84 | |||||||
1984 | 30.83 | a | 41.36 | a | 54.61 | 59.79 | b | 74.00 | 79.18 | b | 94.65 | 91.68 | 80.00 | 59.00 | 48.30 | 37.68 | 62.59 | |||||||||
1985 | 35.10 | 42.71 | 49.52 | 69.10 | 77.84 | 89.38 | a | 93.45 | 87.81 | 71.30 | 65.58 | 42.17 | 34.68 | 63.22 | ||||||||||||
1986 | 47.45 | 50.86 | 60.39 | 62.87 | 73.55 | 86.70 | 87.97 | a | 92.48 | 69.97 | 68.19 | 55.14 | a | 42.97 | 66.54 | |||||||||||
1987 | 38.29 | 49.64 | 53.37 | a | 72.90 | a | 74.23 | 84.97 | 86.77 | 90.35 | 84.63 | 74.26 | 51.83 | 39.87 | 66.76 | |||||||||||
1988 | 37.29 | 49.62 | 59.03 | 67.07 | 73.03 | 84.93 | 96.68 | 92.84 | 80.83 | a | 76.30 | a | 50.10 | 38.41 | d | 67.18 | ||||||||||
1989 | 34.03 | 38.79 | 56.83 | a | 70.90 | 72.97 | a | 83.67 | 94.29 | 85.84 | 80.57 | 65.16 | 54.07 | 43.61 | 65.06 | |||||||||||
1990 | 42.81 | 42.79 | 59.10 | 70.87 | 70.10 | 82.63 | 93.81 | 88.26 | 85.93 | 69.94 | 53.03 | 33.03 | a | 66.02 | ||||||||||||
1991 | 39.19 | 56.68 | 50.65 | 60.13 | 65.84 | 78.90 | 94.35 | 91.60 | a | 83.55 | a | 70.03 | 51.79 | a | 42.26 | 65.41 | ||||||||||
1992 | 43.90 | 53.48 | 61.71 | 71.37 | 83.48 | 86.10 | 89.71 | 91.90 | 83.13 | 69.26 | 48.20 | 36.90 | 68.26 | |||||||||||||
1993 | 32.06 | 38.86 | 57.19 | 61.27 | 75.97 | 76.79 | a | 83.68 | 86.42 | 84.13 | 67.19 | 49.41 | a | 42.16 | 62.93 | |||||||||||
1994 | 46.45 | 45.04 | 61.52 | 66.57 | 76.52 | 86.87 | 96.13 | 93.23 | 84.07 | 65.61 | 40.93 | 35.00 | 66.49 | |||||||||||||
1995 | 41.55 | 58.29 | 52.48 | 60.13 | 67.87 | 78.27 | 89.81 | 88.58 | 83.10 | 68.42 | 61.48 | a | 44.94 | 66.24 | ||||||||||||
1996 | 43.58 | 49.17 | 58.00 | 65.79 | a | 71.65 | 84.17 | 93.58 | 92.48 | 79.67 | 67.23 | a | 51.97 | a | 43.10 | 66.70 | ||||||||||
1997 | 40.50 | a | 47.61 | 60.97 | a | 61.83 | a | 81.10 | b | 81.03 | 91.57 | a | 92.90 | 83.37 | 68.26 | 55.83 | 40.65 | 67.13 | ||||||||
1998 | 45.93 | a | 44.18 | 55.45 | 61.72 | a | 65.42 | 76.60 | 96.68 | 96.00 | 81.13 | 65.35 | 48.86 | b | 37.52 | 64.57 | ||||||||||
1999 | 43.00 | 46.79 | 55.84 | 61.83 | 74.61 | 82.27 | 95.33 | a | 89.00 | ----- | z | 70.65 | 57.27 | 43.03 | a | 65.42 | a | |||||||||
2000 | 42.45 | 47.07 | 54.81 | 69.40 | 74.65 | 87.43 | 91.03 | a | 91.16 | 79.28 | a | 62.77 | 44.20 | 41.55 | 65.48 | |||||||||||
2001 | 38.74 | 41.32 | 59.10 | 60.97 | 80.45 | 83.90 | 90.26 | 91.71 | 81.60 | 69.03 | a | 50.47 | ----- | z | 67.96 | a | ||||||||||
2002 | ----- | z | ----- | z | ----- | z | 64.38 | a | 72.32 | 85.37 | ----- | z | ----- | z | 82.00 | a | 66.03 | ----- | z | 45.74 | 69.31 | f | ||||
2003 | ----- | z | 47.07 | 58.33 | a | 57.70 | 73.40 | a | 86.40 | 95.71 | 88.71 | 81.50 | 71.70 | a | 45.33 | 40.52 | 67.85 | a | ||||||||
2004 | 38.45 | 43.31 | 66.16 | 69.10 | a | 72.42 | 83.27 | 92.47 | a | 88.17 | a | 80.07 | 63.74 | 49.87 | 45.84 | 66.07 | ||||||||||
2005 | 37.65 | 43.18 | 64.00 | a | 63.00 | b | 71.77 | 75.61 | b | ----- | z | ----- | z | 75.47 | 64.00 | 51.62 | a | 39.94 | 58.62 | b | ||||||
2006 | 44.10 | b | 45.07 | 45.03 | ----- | z | 72.86 | j | 82.10 | 90.00 | v | 84.57 | h | 87.00 | s | 59.21 | q | 52.07 | b | 41.03 | a | 51.57 | f | |||
2007 | 41.60 | a | ----- | z | ----- | z | 67.25 | f | 79.59 | d | 87.83 | f | 92.90 | b | 90.21 | b | 77.82 | b | 62.80 | u | 52.10 | a | 38.67 | a | 67.56 | e |
2008 | 35.24 | b | 46.52 | 52.38 | b | 59.90 | a | 68.93 | b | 79.89 | k | 89.29 | c | 87.63 | l | 79.61 | b | 62.93 | c | 52.86 | b | 38.30 | a | 58.59 | b | |
2009 | 42.93 | d | 49.61 | 53.83 | b | 60.64 | b | 74.74 | 76.63 | c | ----- | z | 86.32 | i | 81.52 | a | 59.15 | d | 48.81 | d | ----- | z | 60.87 | c | ||
2010 | 46.65 | 53.79 | 52.46 | e | 59.00 | c | 61.54 | c | 76.46 | b | 88.87 | 83.93 | a | 77.82 | b | 66.17 | a | 49.23 | 49.61 | 63.79 | ||||||
2011 | 45.29 | x | ----- | z | ----- | z | ----- | z | ----- | z | 83.18 | s | 87.00 | b | 87.56 | d | 82.60 | 62.52 | 47.62 | a | 40.97 | a | 68.04 | f | ||
2012 | 43.35 | 46.72 | 53.06 | m | ----- | z | 76.87 | h | 81.07 | 90.80 | a | 90.10 | 82.40 | 66.65 | 53.00 | a | 38.35 | 65.83 | c | |||||||
2013 | 25.77 | 43.57 | 58.29 | 64.10 | 72.68 | 86.30 | 94.00 | a | 87.71 | c | 76.40 | 59.68 | 52.27 | 34.77 | 62.96 | |||||||||||
2014 | 47.65 | 52.86 | 56.97 | 64.33 | 75.13 | 81.83 | 92.13 | 85.71 | 80.07 | a | 67.52 | 53.97 | a | 43.83 | a | 66.83 | ||||||||||
2015 | 45.93 | a | 53.25 | 62.97 | 64.43 | 71.19 | 87.90 | 86.87 | 88.77 | 82.20 | 69.94 | 46.57 | 40.03 | 66.67 | ||||||||||||
2016 | 37.16 | 51.97 | 58.35 | 68.30 | 71.42 | 85.79 | b | 90.06 | 90.87 | 80.27 | 64.23 | 53.57 | 37.00 | 65.75 | ||||||||||||
2017 | 33.13 | 45.11 | 57.67 | a | 59.40 | 74.84 | 83.37 | 93.52 | 90.61 | 82.62 | f | 63.45 | 53.60 | 41.26 | 63.27 | a | ||||||||||
2018 | 50.84 | 46.93 | 53.55 | 65.37 | 74.23 | 83.43 | 92.65 | 89.87 | 79.73 | 63.94 | 49.87 | 39.26 | 65.80 | |||||||||||||
2019 | 42.26 | 38.04 | 50.84 | ----- | z | 66.74 | 79.07 | 91.03 | 93.32 | 75.72 | a | 58.23 | 53.07 | 40.94 | 62.66 | a | ||||||||||
2020 | 43.23 | 49.52 | 53.84 | 64.57 | 73.39 | 80.97 | a | 90.84 | 90.71 | 82.77 | 67.29 | 49.23 | 40.61 | 65.58 | ||||||||||||
2021 | 41.68 | 44.07 | 54.10 | 65.93 | 72.13 | 88.14 | a | 94.32 | 88.68 | 82.40 | 62.48 | 52.30 | 38.42 | 65.39 | ||||||||||||
2022 | 41.81 | 47.64 | 56.74 | 60.83 | 67.77 | a | 81.47 | 93.87 | 93.58 | 84.23 | 72.16 | 43.28 | a | 36.32 | 64.98 | |||||||||||
2023 | 37.97 | 42.68 | 44.16 | 62.27 | 71.61 | 75.37 | 94.03 | 86.94 | 77.17 | 63.94 | 50.17 | 43.55 | 62.49 | |||||||||||||
2024 | 43.55 | 47.00 | 52.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.71 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.27 | 46.96 | 54.99 | 63.28 | 72.88 | 82.65 | 92.19 | 89.94 | 80.47 | 66.70 | 50.77 | 40.90 | 65.26 | |||||||||||||
S.D. | 4.62 | 4.57 | 4.29 | 4.51 | 4.36 | 3.88 | 2.80 | 3.09 | 3.62 | 4.23 | 3.74 | 3.69 | 1.39 | |||||||||||||
SKEW | -0.44 | 0.14 | 0.11 | -0.00 | 0.12 | -0.15 | -0.59 | -0.52 | -0.78 | 0.02 | -0.10 | 0.05 | -0.25 | |||||||||||||
MAX | 50.84 | 58.29 | 66.16 | 72.90 | 83.48 | 89.43 | 97.00 | 96.00 | 86.37 | 76.30 | 61.48 | 50.06 | 68.26 | |||||||||||||
MIN | 25.77 | 38.04 | 44.16 | 51.97 | 61.54 | 75.37 | 83.68 | 81.03 | 69.97 | 58.23 | 40.93 | 32.90 | 62.49 | |||||||||||||
YRS | 67 | 67 | 66 | 64 | 66 | 65 | 63 | 64 | 65 | 65 | 68 | 68 | 53 |