YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.42 | 36.42 | k | |
1944 | 33.00 | 35.34 | 41.74 | 46.93 | 54.32 | 58.07 | 66.39 | 67.16 | 62.37 | 52.03 | 41.57 | 34.77 | 49.47 | |||||||||||||
1945 | 34.58 | 39.25 | 40.55 | 48.21 | a | 56.35 | 62.60 | 73.26 | 68.57 | a | 63.80 | 53.58 | 39.67 | 32.71 | 51.09 | |||||||||||
1946 | 32.61 | 34.21 | 40.74 | 51.70 | 56.74 | 65.00 | 71.00 | 69.45 | 62.67 | 48.65 | 37.33 | 36.00 | 50.51 | |||||||||||||
1947 | 30.90 | 40.93 | 45.84 | 50.93 | 61.03 | 65.27 | 68.48 | 67.65 | 66.90 | 53.81 | 37.23 | 33.00 | 51.83 | |||||||||||||
1948 | 32.97 | 35.48 | 37.00 | 49.53 | 53.65 | 64.00 | 66.77 | 65.71 | 62.37 | 52.52 | 37.37 | 30.55 | 48.99 | |||||||||||||
1949 | 23.52 | 31.96 | c | 40.42 | 50.41 | a | 55.10 | 65.63 | 69.81 | 66.06 | 63.80 | 49.48 | 44.17 | 30.81 | 49.26 | |||||||||||
1950 | 29.58 | 38.71 | 42.90 | 52.30 | 56.48 | 62.60 | 72.90 | 69.45 | 62.47 | 55.45 | 44.90 | 38.84 | 52.22 | |||||||||||||
1951 | 35.03 | 36.50 | 41.55 | 48.90 | 56.58 | 63.47 | 71.74 | 68.94 | 65.23 | 51.52 | 39.73 | 33.16 | 51.03 | |||||||||||||
1952 | 31.87 | 37.79 | 39.71 | 48.07 | 58.81 | 59.73 | 70.58 | 71.61 | 64.30 | 56.84 | 39.00 | 35.06 | 51.11 | |||||||||||||
1953 | 38.35 | 35.18 | 41.00 | 48.07 | 49.77 | 59.53 | 73.32 | 66.32 | 62.97 | 50.71 | 42.43 | 31.68 | 49.94 | |||||||||||||
1954 | 34.19 | 40.36 | 40.13 | 53.40 | 58.71 | 62.70 | 73.19 | 65.84 | 61.70 | 51.61 | 43.40 | 32.19 | 51.45 | |||||||||||||
1955 | 31.06 | 31.36 | 39.74 | 44.33 | 53.94 | 61.90 | 68.13 | 72.10 | 63.70 | 52.74 | 40.17 | 38.16 | 49.78 | |||||||||||||
1956 | 39.06 | 34.69 | 41.48 | 46.93 | 55.48 | 65.00 | 69.55 | 66.00 | 65.40 | 50.48 | 35.77 | 32.90 | 50.23 | |||||||||||||
1957 | 33.58 | 43.64 | 44.97 | 49.17 | 53.90 | 67.00 | 69.65 | 69.52 | 62.83 | 50.68 | 38.63 | 34.97 | 51.54 | |||||||||||||
1958 | 35.19 | 43.07 | 40.00 | 48.53 | 60.00 | 64.73 | 70.10 | 73.29 | 64.73 | 56.03 | 41.70 | 36.42 | 52.82 | |||||||||||||
1959 | 37.00 | 37.11 | 45.16 | 54.83 | 55.61 | 68.37 | 75.74 | 69.55 | 62.00 | 54.52 | 41.60 | 35.84 | 53.11 | |||||||||||||
1960 | 31.61 | 37.76 | 46.58 | 50.83 | 57.45 | 70.07 | 73.03 | 70.52 | 66.57 | 52.42 | 40.30 | 32.45 | 52.47 | |||||||||||||
1961 | 32.52 | 38.07 | 44.39 | 50.93 | 56.03 | 68.87 | 74.74 | 71.29 | 60.73 | 51.77 | 38.77 | 33.58 | 51.81 | |||||||||||||
1962 | 33.06 | 39.79 | 39.94 | 53.07 | 54.06 | 64.00 | 70.16 | 70.52 | 64.43 | 54.03 | 44.87 | 34.77 | 51.89 | |||||||||||||
1963 | 29.97 | 45.57 | 41.39 | 45.70 | 57.45 | 61.33 | 68.87 | 68.26 | 64.80 | 56.26 | 42.77 | 32.90 | 51.27 | |||||||||||||
1964 | 32.45 | 35.45 | 41.58 | 48.63 | 55.61 | 63.77 | 71.71 | 72.06 | 61.20 | 59.10 | 40.10 | 39.19 | 51.74 | |||||||||||||
1965 | 36.23 | 38.93 | 44.71 | 50.37 | 57.58 | 61.43 | 71.13 | 72.23 | 59.30 | 55.58 | 47.30 | 36.23 | 52.58 | |||||||||||||
1966 | 32.39 | 35.79 | 45.29 | 52.43 | 59.65 | 66.50 | 71.03 | 74.29 | 64.13 | 52.90 | 44.80 | 35.42 | 52.89 | |||||||||||||
1967 | 35.97 | 39.39 | 46.42 | 43.37 | 58.94 | 63.60 | 75.74 | 75.97 | 67.10 | 55.45 | 47.80 | 34.42 | 53.68 | |||||||||||||
1968 | 34.58 | 45.34 | 46.77 | 50.03 | 60.10 | 69.90 | 75.03 | 69.87 | 66.60 | 56.10 | 46.77 | 32.23 | 54.44 | |||||||||||||
1969 | 42.00 | 40.04 | 44.52 | 52.20 | 62.58 | 66.63 | 75.74 | 75.97 | 70.07 | 52.45 | 43.93 | 39.16 | 55.44 | |||||||||||||
1970 | 38.00 | 43.61 | 47.35 | 47.93 | 60.84 | 68.07 | 77.55 | 76.45 | 63.07 | 53.84 | 46.27 | 37.97 | 55.08 | |||||||||||||
1971 | 37.45 | 42.96 | 46.13 | 49.87 | 57.13 | 67.33 | 76.03 | 76.65 | 66.57 | 50.94 | 41.60 | 35.19 | 53.99 | |||||||||||||
1972 | 34.13 | 43.21 | 52.39 | 53.43 | 60.42 | 68.73 | 76.45 | 72.68 | 65.40 | 54.84 | 43.30 | 34.35 | 54.94 | |||||||||||||
1973 | 34.55 | 42.61 | 44.71 | 51.50 | 63.39 | 70.03 | 74.10 | 73.33 | a | 64.03 | 53.94 | 46.30 | 41.16 | 54.97 | ||||||||||||
1974 | 39.58 | 41.96 | 51.81 | 52.97 | 63.61 | 71.20 | 77.10 | 73.90 | 72.63 | 58.84 | 46.40 | 39.03 | 57.42 | |||||||||||||
1975 | 38.48 | 41.64 | 45.13 | 47.97 | 60.61 | 69.20 | 74.23 | 71.16 | 69.20 | 54.81 | 43.13 | 37.90 | 54.46 | |||||||||||||
1976 | 38.35 | 45.69 | 46.45 | 51.77 | 64.74 | 69.33 | 75.87 | a | 69.39 | 68.03 | 57.97 | 48.83 | 35.48 | 55.99 | ||||||||||||
1977 | 40.32 | 44.82 | 43.32 | 55.07 | 56.74 | 71.33 | 75.42 | 73.23 | 63.77 | 55.77 | 43.47 | 42.23 | 55.46 | |||||||||||||
1978 | 40.84 | 44.04 | 50.29 | 50.50 | 58.94 | 69.43 | 73.26 | 72.71 | 63.90 | 60.42 | 43.43 | 33.16 | 55.08 | |||||||||||||
1979 | 35.39 | 39.54 | 46.81 | 52.73 | 60.52 | 68.10 | 71.90 | 70.81 | 69.40 | 58.74 | 42.20 | 38.23 | 54.53 | |||||||||||||
1980 | 44.16 | 43.79 | 46.13 | 52.60 | 56.58 | 65.43 | 74.74 | 72.29 | 66.07 | 58.16 | 47.03 | 41.39 | 55.70 | |||||||||||||
1981 | 40.16 | 40.86 | 44.94 | 53.90 | 60.74 | 72.60 | 76.90 | 76.97 | 70.93 | 55.26 | 48.83 | 43.61 | 57.14 | |||||||||||||
1982 | 39.45 | 47.18 | 48.00 | 53.40 | 61.77 | 67.43 | 74.58 | 74.93 | b | 67.27 | 55.32 | 44.00 | 37.47 | a | 55.90 | |||||||||||
1983 | 39.48 | 44.54 | 48.45 | 49.77 | 60.32 | 66.57 | 71.06 | 73.00 | 72.00 | 59.26 | 47.83 | 42.23 | 56.21 | |||||||||||||
1984 | 38.48 | 38.55 | 47.13 | 49.97 | 64.42 | 69.68 | b | 77.68 | 78.11 | v | 72.30 | 55.23 | 45.70 | 39.00 | 54.38 | a | ||||||||||
1985 | 34.77 | 35.71 | 41.74 | 53.23 | 56.71 | 68.33 | 74.48 | 68.45 | 59.87 | 53.35 | 41.70 | 36.13 | 52.04 | |||||||||||||
1986 | 38.32 | 43.82 | 48.58 | 50.23 | 59.94 | 67.97 | 69.39 | 74.48 | 60.17 | 51.23 | 42.63 | 33.94 | 53.39 | |||||||||||||
1987 | 32.80 | a | 38.75 | 42.20 | a | 53.10 | 58.87 | 68.20 | 67.45 | 71.42 | 64.87 | 58.06 | 42.00 | 32.71 | 52.54 | |||||||||||
1988 | 33.71 | 39.34 | 44.03 | 50.57 | 57.35 | 65.07 | 75.52 | 71.29 | 64.00 | 59.35 | 44.17 | 34.84 | 53.27 | |||||||||||||
1989 | 31.77 | 37.64 | 48.61 | 57.13 | 58.77 | 65.57 | 74.10 | 69.03 | 63.00 | 51.68 | 42.93 | 33.94 | 52.85 | |||||||||||||
1990 | 33.55 | 36.79 | 45.55 | 53.80 | 57.10 | 66.90 | 74.10 | 69.90 | 65.00 | 53.77 | 41.40 | 27.10 | 52.08 | |||||||||||||
1991 | 34.26 | 43.14 | 40.77 | 49.03 | 55.19 | 64.83 | 72.48 | 71.35 | 67.70 | 58.87 | 42.63 | 35.52 | 52.98 | |||||||||||||
1992 | 33.65 | 42.76 | 46.84 | 53.73 | 62.74 | 65.73 | 71.71 | 73.58 | 66.23 | 56.58 | 38.77 | 32.03 | 53.70 | |||||||||||||
1993 | 36.74 | 41.21 | 48.06 | 51.50 | 59.16 | 64.87 | 69.45 | 70.68 | 63.20 | 54.19 | 38.77 | 31.26 | 52.42 | |||||||||||||
1994 | 35.39 | 36.64 | 48.58 | 53.77 | 57.84 | 69.83 | 75.52 | 74.06 | 65.63 | 53.06 | 34.50 | 35.71 | 53.38 | |||||||||||||
1995 | 39.71 | 45.82 | 45.32 | 50.80 | 55.78 | d | 62.60 | 71.81 | 73.35 | 68.13 | 53.90 | 46.97 | 38.39 | 54.38 | ||||||||||||
1996 | 38.84 | 44.66 | 46.06 | 52.67 | 61.48 | 67.43 | 76.16 | 74.26 | 64.57 | 52.84 | 44.17 | 38.74 | 55.16 | |||||||||||||
1997 | 39.61 | 39.50 | 47.19 | 52.47 | 65.52 | 67.93 | 69.61 | 71.90 | 67.37 | 52.29 | 44.07 | 33.68 | 54.26 | |||||||||||||
1998 | 38.26 | 40.32 | 43.03 | 46.00 | 52.19 | 62.20 | 73.00 | 75.03 | 64.00 | 51.00 | 41.70 | 33.94 | 51.72 | |||||||||||||
1999 | 37.84 | 39.00 | 42.55 | 46.97 | 58.65 | 66.20 | 71.65 | 69.84 | 65.73 | 55.94 | 43.97 | 35.16 | 52.79 | |||||||||||||
2000 | 40.90 | 42.07 | 46.77 | 54.93 | 63.58 | 70.13 | 72.87 | 73.74 | 64.03 | 54.77 | 37.41 | a | 36.65 | 54.82 | ||||||||||||
2001 | 34.71 | 37.57 | 47.84 | 49.10 | 65.55 | 70.33 | 72.19 | 74.45 | 67.20 | 57.94 | 45.30 | 34.39 | 54.71 | |||||||||||||
2002 | 33.71 | 37.50 | 42.35 | 53.33 | 59.13 | 69.73 | 75.26 | 71.74 | 66.77 | 53.81 | 42.83 | 36.58 | 53.56 | |||||||||||||
2003 | 41.94 | 40.68 | 47.00 | 48.70 | 60.71 | 69.80 | 78.19 | 74.65 | 69.60 | 60.90 | 41.87 | 35.97 | 55.83 | |||||||||||||
2004 | 35.68 | 38.62 | 50.71 | 54.00 | 61.23 | 69.20 | 74.42 | 72.71 | 65.37 | 54.39 | 40.90 | 35.84 | 54.42 | |||||||||||||
2005 | 39.00 | 41.21 | 45.35 | 47.20 | 59.16 | 64.47 | 76.23 | 73.48 | 61.33 | 54.52 | 44.63 | 36.29 | 53.57 | |||||||||||||
2006 | 36.45 | 38.75 | 41.48 | 48.67 | 62.29 | 72.10 | 78.16 | 70.87 | 64.07 | 52.16 | 43.57 | 32.61 | 53.43 | |||||||||||||
2007 | 30.84 | 40.39 | 47.65 | 54.23 | 60.90 | 68.83 | 75.42 | 75.16 | 63.30 | 52.26 | 44.90 | 33.65 | 53.96 | |||||||||||||
2008 | 34.19 | 40.21 | 45.68 | 50.17 | 58.74 | 69.37 | 74.87 | 74.94 | 68.10 | 54.52 | 46.77 | 35.58 | 54.43 | |||||||||||||
2009 | 36.72 | b | 37.89 | 42.84 | 48.23 | 65.32 | 63.54 | b | 78.79 | q | 71.55 | 67.40 | 50.97 | 41.27 | 32.84 | 50.78 | a | |||||||||
2010 | 35.84 | 41.50 | 43.23 | 47.17 | 55.13 | 68.37 | 75.45 | 70.52 | 65.60 | 55.90 | 40.97 | 40.23 | 53.32 | |||||||||||||
2011 | 36.00 | 35.54 | 44.65 | 51.17 | 55.23 | 65.50 | 72.97 | 72.32 | 67.70 | 55.19 | 41.13 | 32.19 | 52.47 | |||||||||||||
2012 | 35.55 | 39.55 | 43.81 | 51.63 | 62.06 | 67.57 | 72.52 | 77.19 | 69.67 | 56.35 | 45.53 | 36.52 | 54.83 | |||||||||||||
2013 | 31.61 | 37.04 | 50.00 | 55.27 | 61.32 | 71.07 | 78.23 | 71.84 | 66.93 | 50.68 | 44.50 | 34.94 | 54.45 | |||||||||||||
2014 | 38.94 | 45.04 | 48.06 | 53.13 | 61.26 | 70.80 | 76.00 | 72.35 | 69.37 | 57.00 | 44.10 | 40.03 | 56.34 | |||||||||||||
2015 | 39.29 | 44.82 | 50.61 | 52.37 | 58.13 | 72.43 | 72.16 | 74.77 | 69.33 | 60.16 | 38.60 | 33.19 | 55.49 | |||||||||||||
2016 | 36.13 | 40.38 | 48.39 | 54.33 | 59.03 | 73.17 | 76.00 | 73.87 | 63.50 | 56.23 | 44.47 | 36.55 | 55.17 | |||||||||||||
2017 | 38.23 | 44.46 | 47.77 | a | 52.37 | c | 58.55 | 70.10 | 77.00 | 75.16 | 64.77 | 52.87 | 46.20 | 33.71 | 55.10 | |||||||||||
2018 | 38.77 | 37.61 | 45.19 | 54.90 | 60.10 | 68.53 | 78.90 | 75.42 | 67.93 | 54.30 | a | 42.63 | 36.97 | 55.11 | ||||||||||||
2019 | 37.23 | 35.96 | 44.52 | 54.73 | 54.97 | 69.13 | 73.81 | 73.06 | 66.17 | 50.16 | 41.96 | d | 37.84 | 53.29 | ||||||||||||
2020 | 38.42 | 41.10 | 45.42 | 52.97 | 61.68 | 67.21 | a | 73.10 | 76.23 | 67.60 | 58.32 | 41.83 | 33.81 | 54.81 | ||||||||||||
2021 | 36.06 | 39.50 | 42.19 | 53.47 | 62.45 | 74.27 | 79.83 | b | 75.06 | 68.37 | 52.10 | 47.83 | 37.06 | 55.68 | ||||||||||||
2022 | 35.10 | 36.75 | 47.06 | 53.93 | 60.70 | a | 70.83 | 76.97 | 78.46 | c | 71.57 | 58.48 | 38.73 | 36.87 | 55.46 | |||||||||||
2023 | 37.10 | 35.82 | 42.61 | 51.90 | 59.39 | 63.97 | 78.19 | 73.13 | a | 65.47 | 54.94 | 40.80 | 38.87 | 53.52 | ||||||||||||
2024 | 39.74 | 42.86 | 45.71 | 46.83 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.77 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.92 | 39.93 | 44.93 | 51.08 | 58.88 | 67.00 | 73.54 | 72.11 | 65.59 | 54.56 | 42.74 | 35.61 | 53.46 | |||||||||||||
S.D. | 3.42 | 3.46 | 3.17 | 2.78 | 3.23 | 3.38 | 3.03 | 2.91 | 2.95 | 2.82 | 3.12 | 2.98 | 1.90 | |||||||||||||
SKEW | -0.43 | -0.06 | -0.01 | -0.44 | -0.10 | -0.33 | -0.26 | -0.29 | 0.29 | 0.25 | -0.24 | 0.27 | -0.34 | |||||||||||||
MAX | 44.16 | 47.18 | 52.39 | 57.13 | 65.55 | 74.27 | 79.83 | 78.46 | 72.63 | 60.90 | 48.83 | 43.61 | 57.42 | |||||||||||||
MIN | 23.52 | 31.36 | 37.00 | 43.37 | 49.77 | 58.07 | 66.39 | 65.71 | 59.30 | 48.65 | 34.50 | 27.10 | 48.99 | |||||||||||||
YRS | 81 | 81 | 81 | 80 | 80 | 80 | 79 | 79 | 80 | 80 | 80 | 81 | 78 |