| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1962 | ----- | z | 37.54 | b | 42.26 | 59.00 | 63.97 | 71.13 | 75.29 | 79.68 | 69.93 | 61.74 | 50.48 | a | 40.32 | 59.21 | a | |||||||||
| 1963 | 26.29 | 41.59 | a | 49.42 | 54.50 | 64.71 | 75.37 | 81.55 | 81.35 | 76.48 | e | 67.90 | 49.57 | 35.84 | 58.71 | |||||||||||
| 1964 | 37.23 | 34.55 | 37.65 | 51.53 | 64.45 | 71.07 | 83.90 | 79.17 | a | 70.63 | 62.00 | 45.50 | 36.39 | 56.17 | ||||||||||||
| 1965 | 40.35 | 35.79 | 30.84 | 53.87 | 62.16 | 68.83 | 78.39 | 75.77 | 55.13 | 63.84 | 49.67 | 42.00 | 54.72 | |||||||||||||
| 1966 | 30.48 | 35.04 | 48.32 | 47.73 | 68.71 | 74.60 | 86.42 | 75.35 | 70.72 | a | 59.42 | 46.63 | 37.81 | 56.77 | ||||||||||||
| 1967 | 38.23 | 39.00 | 45.10 | 53.50 | 56.97 | 67.67 | 81.29 | 82.33 | a | 70.73 | 60.65 | 44.47 | 32.52 | 56.04 | ||||||||||||
| 1968 | 39.10 | 39.45 | 50.00 | 51.97 | 58.68 | 74.17 | a | 80.84 | 78.35 | 70.07 | 63.06 | 42.37 | 32.00 | 56.67 | ||||||||||||
| 1969 | 35.37 | a | 37.68 | 37.42 | 59.47 | 69.19 | 67.70 | 80.65 | 85.00 | 77.17 | 48.68 | 48.60 | 38.90 | 57.15 | ||||||||||||
| 1970 | 32.90 | 43.36 | 36.73 | a | 47.17 | 68.45 | 79.60 | 86.42 | 85.52 | 71.53 | 52.94 | 42.53 | 38.50 | a | 57.14 | |||||||||||
| 1971 | 33.30 | a | 35.46 | 40.65 | 52.20 | 61.03 | 75.73 | 80.29 | 84.16 | 66.88 | f | 55.76 | b | 43.93 | c | 35.45 | 54.36 | a | ||||||||
| 1972 | 28.71 | 41.83 | 49.55 | 50.23 | 62.48 | 73.83 | 76.10 | 78.32 | 70.77 | 57.52 | 41.27 | 30.00 | a | 55.05 | ||||||||||||
| 1973 | 36.70 | a | 42.32 | 45.15 | e | 50.00 | 62.58 | 74.17 | 80.40 | a | 83.94 | 65.57 | 62.55 | 42.83 | a | 39.45 | 57.14 | |||||||||
| 1974 | 33.71 | 43.36 | 48.97 | 54.80 | 64.42 | 78.38 | a | 88.97 | 77.83 | a | 69.76 | a | 63.13 | 44.90 | 40.26 | 59.04 | ||||||||||
| 1975 | 34.10 | 35.54 | 38.74 | 48.40 | ----- | z | 71.53 | 85.39 | 81.00 | 70.87 | 62.55 | 43.77 | 43.81 | 55.97 | a | |||||||||||
| 1976 | 37.30 | a | 44.24 | 42.87 | a | 54.60 | 67.85 | d | 76.00 | 84.03 | a | 82.32 | 74.83 | 56.45 | 43.97 | 40.32 | 58.73 | |||||||||
| 1977 | 30.71 | 43.82 | 45.35 | 58.13 | 70.23 | 78.90 | 84.10 | 75.17 | a | 73.17 | 61.45 | 45.03 | 35.26 | 58.44 | ||||||||||||
| 1978 | 29.45 | 31.71 | 48.70 | a | 51.00 | 61.81 | 74.83 | 79.67 | a | 80.77 | 76.07 | 63.77 | a | 42.83 | 29.39 | 55.83 | ||||||||||
| 1979 | 24.13 | a | 38.07 | 46.30 | a | 52.10 | 62.63 | a | 72.60 | 78.65 | 75.55 | 78.40 | 59.61 | 39.87 | 46.13 | 56.17 | ||||||||||
| 1980 | 32.10 | a | 38.21 | 41.90 | 55.13 | 64.13 | 77.57 | 86.13 | 78.23 | 72.37 | 57.42 | 47.83 | a | 43.16 | 57.85 | |||||||||||
| 1981 | 43.90 | 38.96 | 49.20 | a | 60.53 | 60.26 | 73.77 | 80.48 | 78.58 | 74.03 | 56.55 | 51.93 | a | 36.81 | 58.75 | |||||||||||
| 1982 | 28.97 | 37.00 | 43.39 | 49.93 | a | 61.03 | a | 66.10 | 82.20 | a | 81.07 | a | 69.10 | a | 53.74 | 41.38 | a | 38.32 | 54.35 | |||||||
| 1983 | 42.10 | 45.43 | 42.19 | 45.63 | 58.39 | 71.20 | 86.26 | 87.35 | 72.30 | 59.06 | 41.90 | 21.65 | 56.12 | |||||||||||||
| 1984 | 37.19 | 42.83 | 40.50 | a | 48.97 | a | 62.42 | 72.14 | b | 80.61 | 83.63 | a | 66.79 | a | 53.30 | a | 46.77 | 36.94 | 56.01 | |||||||
| 1985 | 32.39 | 34.19 | a | 46.68 | 61.34 | a | 72.13 | 73.77 | 84.84 | 80.16 | 64.30 | 56.90 | 29.17 | 34.52 | 55.86 | |||||||||||
| 1986 | 46.23 | 38.25 | 52.57 | a | 51.07 | a | 63.32 | 77.23 | 80.94 | 79.00 | 60.77 | 55.29 | 43.61 | b | 40.83 | b | 57.42 | |||||||||
| 1987 | 39.07 | a | 40.07 | 41.80 | a | 62.66 | a | 66.42 | 75.57 | 83.07 | a | 75.83 | a | 69.62 | a | 58.90 | 46.10 | 37.90 | a | 58.08 | ||||||
| 1988 | 33.60 | a | 38.28 | 45.25 | k | 59.00 | 68.07 | a | 84.77 | 84.77 | 83.17 | a | 70.97 | a | 58.26 | 42.97 | 39.23 | 60.28 | a | |||||||
| 1989 | 41.52 | 23.43 | 43.16 | 52.21 | a | 65.52 | d | 74.31 | a | 83.93 | a | 81.03 | a | 70.86 | a | 55.60 | a | 44.97 | 31.16 | 55.64 | ||||||
| 1990 | 41.52 | j | 38.04 | a | 43.87 | 52.93 | 59.48 | 75.63 | 77.65 | 80.87 | 74.69 | a | 58.53 | a | 49.69 | a | 29.58 | 58.27 | a | |||||||
| 1991 | 31.58 | 45.71 | 45.63 | a | 51.20 | 61.87 | 75.45 | a | 80.07 | a | 81.00 | f | 69.10 | a | 56.29 | 39.43 | b | 41.84 | 54.38 | a | ||||||
| 1992 | 42.28 | b | 44.55 | 46.77 | 55.77 | 65.90 | 68.70 | 70.03 | a | 72.77 | a | 70.57 | 56.74 | 37.79 | a | 31.94 | 55.32 | |||||||||
| 1993 | 32.65 | 29.39 | 43.77 | 47.77 | 61.35 | 66.23 | 71.06 | 73.35 | 60.83 | 53.42 | 37.23 | 37.42 | 51.21 | |||||||||||||
| 1994 | 34.35 | 29.57 | 45.29 | 51.83 | 67.10 | 74.23 | 76.68 | 78.39 | 71.20 | 53.87 | 42.57 | 40.97 | 55.50 | |||||||||||||
| 1995 | 39.55 | 38.64 | 41.65 | 43.17 | 53.45 | 67.43 | 77.39 | 81.68 | 65.77 | 52.67 | a | 45.13 | 39.32 | 53.82 | ||||||||||||
| 1996 | 29.35 | 38.83 | 34.03 | 52.41 | a | 54.16 | 73.07 | a | 76.03 | 79.84 | f | 62.87 | 54.52 | 36.72 | a | 34.03 | 49.64 | a | ||||||||
| 1997 | 31.39 | 36.61 | 47.50 | a | 43.40 | 55.72 | b | 70.50 | 75.33 | a | 73.16 | 70.23 | 58.79 | b | 42.27 | 38.33 | a | 53.60 | ||||||||
| 1998 | 36.13 | 39.86 | 36.70 | a | 51.33 | 62.19 | 63.10 | 77.29 | 76.68 | 74.30 | 52.48 | 45.10 | 35.90 | 54.26 | ||||||||||||
| 1999 | 38.40 | a | 42.44 | a | 47.39 | 45.45 | a | 57.87 | 69.30 | 79.19 | 79.19 | 64.03 | 59.71 | 56.07 | 40.61 | 56.64 | ||||||||||
| 2000 | 37.06 | 45.29 | a | 46.67 | a | 53.21 | a | 63.58 | 70.53 | 79.55 | 82.23 | 72.20 | 57.00 | b | 33.83 | a | 31.81 | 56.08 | ||||||||
| 2001 | 39.42 | 30.65 | b | 42.19 | 51.47 | 61.35 | 70.27 | 79.45 | 81.45 | 70.64 | b | 54.74 | 51.50 | 36.58 | 55.81 | |||||||||||
| 2002 | 35.68 | 40.00 | 32.65 | 50.20 | 56.13 | 75.17 | 83.71 | 76.71 | 68.03 | 45.30 | a | 44.90 | 40.70 | a | 54.10 | |||||||||||
| 2003 | 38.68 | 33.21 | 42.68 | 52.20 | 60.26 | 66.10 | 83.68 | 81.97 | 68.03 | 61.61 | 38.37 | 40.21 | b | 55.58 | ||||||||||||
| 2004 | 36.90 | a | 38.66 | 48.66 | b | 55.10 | 60.87 | 66.67 | 77.55 | 73.10 | 68.07 | 57.50 | a | 45.60 | 41.19 | 55.82 | ||||||||||
| 2005 | 37.33 | a | 41.32 | 43.39 | 52.87 | 58.42 | 71.73 | 81.61 | 76.06 | 73.52 | a | 57.61 | 47.47 | 34.29 | 56.30 | |||||||||||
| 2006 | 43.94 | 34.00 | 40.90 | 56.23 | 63.81 | 74.80 | 84.00 | 78.33 | a | 63.73 | 52.00 | 45.76 | a | 39.39 | 56.41 | |||||||||||
| 2007 | 33.71 | 33.11 | 51.90 | 48.00 | 64.81 | 76.30 | 83.58 | 79.35 | 70.33 | 57.48 | 47.14 | a | 32.74 | 56.54 | ||||||||||||
| 2008 | 32.00 | 36.79 | 39.84 | 48.00 | c | 57.63 | d | 67.59 | a | 78.81 | 77.97 | 66.30 | 54.35 | 46.27 | 31.55 | 53.09 | ||||||||||
| 2009 | 37.39 | 37.57 | 44.65 | 46.27 | 61.58 | 65.70 | 73.65 | 74.68 | 70.40 | 42.39 | 51.66 | a | 26.39 | c | 52.69 | |||||||||||
| 2010 | 38.20 | a | 30.71 | 47.81 | 49.87 | 56.68 | 69.43 | 77.32 | 80.06 | 71.90 | 61.03 | 40.80 | 38.52 | 55.19 | ||||||||||||
| 2011 | 32.81 | 31.79 | 41.77 | 47.93 | 53.55 | 71.10 | 81.19 | 78.74 | 69.80 | 57.81 | 44.30 | 38.94 | 54.14 | |||||||||||||
| 2012 | 40.48 | 34.59 | 57.06 | 56.90 | 63.00 | 78.20 | 85.45 | 80.13 | 74.93 | 53.61 | 49.37 | 36.97 | 59.22 | |||||||||||||
| 2013 | 38.10 | 36.50 | 42.39 | 42.93 | 61.52 | 71.10 | 78.23 | 77.68 | 72.62 | a | 49.81 | d | 45.90 | 31.97 | 54.06 | |||||||||||
| 2014 | 37.00 | 27.61 | 42.52 | 50.90 | 60.10 | 67.27 | 76.26 | 73.97 | 68.20 | 59.94 | 39.87 | 38.42 | 53.50 | |||||||||||||
| 2015 | 42.23 | 37.82 | 51.84 | 53.50 | 53.90 | 71.77 | 77.87 | 77.61 | 73.80 | 58.94 | 44.57 | 36.87 | 56.73 | |||||||||||||
| 2016 | 39.19 | 42.72 | 48.71 | 52.50 | 60.13 | 78.57 | 80.40 | a | 75.84 | 68.10 | 61.03 | 53.63 | 30.03 | 57.57 | ||||||||||||
| 2017 | 32.94 | 43.54 | 48.58 | 50.80 | 60.68 | 74.17 | 82.97 | 74.10 | 68.17 | 55.87 | 48.57 | 33.48 | 56.15 | |||||||||||||
| 2018 | 39.35 | 30.96 | 43.00 | 48.00 | 65.26 | 73.03 | 76.61 | 74.90 | 68.52 | a | 52.00 | 41.47 | 37.00 | 54.18 | ||||||||||||
| 2019 | 37.90 | 22.79 | 37.39 | 49.10 | 50.65 | 70.33 | 77.19 | 73.97 | 69.83 | 47.32 | 41.83 | a | 41.26 | 51.63 | ||||||||||||
| 2020 | 38.52 | 35.59 | 44.10 | 49.90 | 57.83 | a | 76.63 | 79.70 | d | 82.03 | 70.00 | 52.90 | 50.90 | a | 42.07 | a | 56.68 | |||||||||
| 2021 | 37.07 | a | 23.39 | 45.16 | 50.57 | 57.48 | 78.00 | 82.52 | 79.39 | 74.19 | c | 59.48 | 52.55 | a | 40.26 | 56.67 | ||||||||||
| 2022 | 39.57 | a | 36.33 | a | 44.14 | b | 46.77 | 58.84 | 74.47 | 83.65 | 80.77 | a | 74.27 | 58.76 | b | 39.70 | 33.45 | 55.89 | ||||||||
| 2023 | 32.81 | 37.93 | 33.58 | 48.63 | 65.43 | a | 70.07 | 77.16 | 76.84 | 71.37 | 52.90 | 47.60 | 42.50 | a | 54.73 | |||||||||||
| 2024 | 31.84 | 41.83 | 42.10 | 51.87 | 58.74 | 73.30 | 80.35 | 79.39 | 78.40 | 64.23 | 45.70 | 42.81 | 57.55 | |||||||||||||
| 2025 | 30.74 | 28.14 | 47.84 | 52.13 | 61.23 | 72.63 | 77.23 | 76.61 | 72.07 | 59.03 | 49.97 | ----- | z | 57.06 | a | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 35.83 | 37.09 | 43.96 | 51.68 | 61.66 | 72.67 | 80.41 | 78.86 | 70.22 | 57.03 | 44.78 | 36.89 | 55.90 | |||||||||||||
| S.D. | 4.50 | 5.43 | 5.04 | 4.26 | 4.40 | 4.09 | 3.80 | 3.37 | 4.26 | 4.69 | 4.81 | 4.60 | 1.78 | |||||||||||||
| SKEW | -0.17 | -0.70 | -0.29 | 0.37 | -0.06 | 0.09 | -0.24 | 0.16 | -0.84 | -0.58 | -0.39 | -0.75 | -0.38 | |||||||||||||
| MAX | 46.23 | 45.71 | 57.06 | 62.66 | 72.13 | 84.77 | 88.97 | 87.35 | 78.40 | 67.90 | 56.07 | 46.13 | 59.22 | |||||||||||||
| MIN | 24.13 | 22.79 | 30.84 | 42.93 | 50.65 | 63.10 | 70.03 | 72.77 | 55.13 | 42.39 | 29.17 | 21.65 | 51.21 | |||||||||||||
| YRS | 62 | 64 | 63 | 64 | 63 | 64 | 64 | 62 | 63 | 64 | 64 | 63 | 56 | |||||||||||||