YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | 41.87 | 42.20 | 43.23 | 46.72 | 57.00 | 58.82 | 65.32 | 63.79 | 56.68 | 52.35 | 43.18 | 38.95 | 50.84 | |||||||||||||
1946 | 39.34 | 41.25 | 43.19 | 47.88 | 57.24 | 58.07 | 64.45 | 63.61 | 58.65 | 47.73 | 40.55 | 38.90 | 50.07 | |||||||||||||
1947 | 35.00 | 43.93 | 47.65 | 51.10 | 57.79 | 59.83 | 63.56 | 62.81 | 59.13 | 51.85 | 43.05 | 41.98 | 51.47 | |||||||||||||
1948 | 38.02 | 38.90 | 42.90 | 45.45 | 52.87 | 61.70 | 62.35 | 61.18 | 57.12 | 50.40 | 42.05 | 35.98 | 49.08 | |||||||||||||
1949 | 29.94 | 37.30 | 45.55 | 50.08 | 57.29 | 59.05 | 62.58 | 63.69 | 60.75 | 48.56 | 49.40 | 38.37 | 50.21 | |||||||||||||
1950 | 24.87 | 39.98 | 42.05 | 46.35 | 51.63 | 60.13 | 63.63 | 63.76 | 57.80 | 49.16 | 43.58 | 44.77 | 48.98 | |||||||||||||
1951 | 36.92 | 40.69 | a | 39.34 | 49.53 | 54.18 | 61.10 | 64.35 | 61.61 | 59.03 | 50.79 | 44.52 | a | 36.44 | 49.87 | |||||||||||
1952 | 36.40 | 40.64 | 42.32 | 48.45 | 54.00 | 56.48 | 63.40 | 63.00 | 59.18 | 54.26 | 41.03 | 41.63 | 50.07 | |||||||||||||
1953 | 44.29 | 40.18 | 42.95 | 46.78 | 52.60 | 55.47 | 61.84 | 62.73 | 59.65 | 53.16 | 46.67 | 42.26 | 50.71 | |||||||||||||
1954 | 36.05 | 42.20 | 40.68 | 45.55 | 53.87 | 56.28 | 60.08 | 60.58 | 58.68 | 50.56 | 48.95 | 40.73 | 49.52 | |||||||||||||
1955 | 39.13 | 38.20 | 39.11 | 44.55 | 50.66 | 57.95 | 60.05 | 60.92 | 56.98 | 50.35 | 38.87 | 38.34 | 47.93 | |||||||||||||
1956 | 38.97 | 35.64 | 40.82 | 49.60 | 56.79 | 56.88 | 64.60 | 62.92 | 57.90 | 49.45 | 42.62 | 40.23 | 49.70 | |||||||||||||
1957 | 32.58 | 39.50 | 44.40 | 50.12 | 57.92 | 60.33 | 61.77 | 61.61 | 62.70 | 50.69 | 43.47 | 43.63 | 50.73 | |||||||||||||
1958 | 43.61 | 47.50 | 44.00 | 49.18 | 60.42 | 63.92 | 68.79 | 66.53 | 59.78 | 53.87 | 43.43 | 44.85 | 53.82 | |||||||||||||
1959 | 40.77 | 40.96 | 44.16 | 49.57 | 53.45 | 59.55 | 66.05 | 62.27 | 57.42 | 51.98 | 43.88 | 40.26 | 50.86 | |||||||||||||
1960 | 38.87 | 41.19 | 43.48 | 49.23 | 52.68 | 59.50 | 66.73 | 62.18 | 58.00 | 52.66 | 44.50 | 39.47 | 50.71 | |||||||||||||
1961 | 43.61 | 44.39 | 45.23 | 47.03 | 53.79 | 63.43 | 67.03 | 68.35 | 58.70 | 50.84 | 41.85 | 39.32 | 51.97 | |||||||||||||
1962 | 38.37 | 43.04 | 43.29 | 49.93 | 50.61 | 59.85 | 63.52 | 62.02 | 59.60 | 52.55 | 46.45 | 42.24 | 50.96 | |||||||||||||
1963 | 33.90 | 48.18 | 43.76 | 48.28 | 57.71 | 59.85 | 62.35 | 64.55 | 63.52 | 54.45 | 44.42 | 40.74 | 51.81 | |||||||||||||
1964 | 39.94 | 41.31 | 44.10 | 46.82 | 53.21 | 57.92 | 63.50 | 62.58 | 58.48 | 53.48 | 42.05 | 36.37 | 49.98 | |||||||||||||
1965 | 40.19 | 42.93 | 46.95 | 49.45 | 51.85 | 60.78 | 67.74 | 65.73 | 58.32 | 56.40 | 49.42 | 40.42 | 52.52 | |||||||||||||
1966 | 41.08 | 43.91 | 45.11 | 49.95 | 54.47 | 58.68 | 62.11 | 64.47 | 61.45 | 51.40 | 45.35 | 43.50 | 51.79 | |||||||||||||
1967 | 42.34 | 42.80 | 42.11 | 46.52 | 55.42 | 62.68 | 66.44 | 71.08 | 65.67 | 54.76 | 47.28 | 41.55 | 53.22 | |||||||||||||
1968 | 40.92 | 48.47 | 48.58 | 48.62 | 57.26 | 60.68 | 67.00 | 63.65 | 59.07 | 51.42 | 46.83 | 36.61 | 52.43 | |||||||||||||
1969 | 33.10 | 42.30 | 46.89 | 48.87 | 58.03 | 64.25 | 64.66 | 64.00 | 60.93 | 52.44 | 46.55 | 45.19 | 52.27 | |||||||||||||
1970 | 41.19 | 46.96 | 45.95 | 46.07 | 54.66 | 62.65 | 64.90 | 64.48 | 58.62 | 50.74 | 46.48 | 38.94 | 51.80 | |||||||||||||
1971 | 39.66 | 42.30 | 41.31 | 48.92 | 54.48 | 55.87 | 65.52 | 67.71 | 57.57 | 50.94 | 45.72 | 37.50 | 50.62 | |||||||||||||
1972 | 36.94 | 41.36 | 46.82 | 47.02 | 58.34 | 60.03 | 65.98 | 66.69 | 55.32 | 50.06 | 46.70 | 38.08 | 51.11 | |||||||||||||
1973 | 38.73 | 43.88 | 44.11 | 48.60 | 56.47 | 59.28 | 64.69 | 61.56 | 61.83 | 52.19 | 43.70 | 44.37 | 51.62 | |||||||||||||
1974 | 38.69 | 43.14 | 46.29 | 50.32 | 54.85 | 62.62 | 63.97 | 64.58 | 64.35 | 52.50 | 45.08 | 42.42 | 52.40 | |||||||||||||
1975 | 38.73 | 40.79 | 42.87 | 45.80 | 54.56 | 60.65 | 67.50 | 63.21 | 62.95 | 51.42 | 44.90 | 41.48 | 51.24 | |||||||||||||
1976 | 41.74 | 40.90 | 41.21 | 49.52 | 56.35 | 59.98 | 65.87 | 64.08 | 62.53 | 54.85 | 47.75 | 44.68 | 52.46 | |||||||||||||
1977 | 39.40 | 48.66 | 45.69 | 53.55 | 54.45 | 63.00 | 65.13 | 68.45 | 58.90 | 52.18 | 43.85 | 42.13 | 52.95 | |||||||||||||
1978 | 44.35 | 46.00 | 48.63 | 49.90 | 54.47 | 64.30 | 65.81 | 65.42 | 58.80 | 54.29 | 41.20 | 37.45 | 52.55 | |||||||||||||
1979 | 37.81 | 42.25 | 49.32 | 50.80 | 57.18 | 62.48 | 67.39 | 63.94 | 62.60 | 54.18 | 43.87 | 44.06 | 52.99 | |||||||||||||
1980 | 34.84 | 43.76 | 44.27 | 51.58 | 54.21 | 57.45 | 63.76 | 61.92 | 59.60 | 53.82 | 46.67 | 44.05 | 51.33 | |||||||||||||
1981 | 44.35 | 44.18 | 48.79 | 49.57 | 54.69 | 57.50 | 63.27 | 68.06 | 61.02 | 50.90 | 47.12 | 41.66 | 52.59 | |||||||||||||
1982 | 39.29 | 42.07 | 44.05 | 47.38 | 54.65 | 63.12 | 62.76 | 65.06 | 60.55 | 52.71 | 43.18 | 40.73 | 51.30 | |||||||||||||
1983 | 44.92 | 46.91 | 49.32 | 50.68 | 57.66 | 59.88 | 63.24 | 65.61 | 58.25 | 51.63 | 47.73 | 36.11 | 52.66 | |||||||||||||
1984 | 43.16 | 44.81 | 48.48 | 48.70 | 52.87 | 58.78 | 64.98 | 64.92 | 59.85 | 49.66 | 44.63 | 36.77 | 51.47 | |||||||||||||
1985 | 37.10 | 38.98 | 43.27 | 49.13 | 54.84 | 60.03 | 68.58 | 65.13 | 58.10 | 51.35 | 35.78 | 36.15 | 49.87 | |||||||||||||
1986 | 44.85 | 42.77 | 49.23 | 48.08 | 55.71 | 62.63 | 61.73 | 68.40 | 59.10 | 54.32 | 45.27 | 41.94 | 52.84 | |||||||||||||
1987 | 40.45 | 46.23 | 48.94 | 51.95 | 56.92 | 62.55 | 64.18 | 66.13 | 62.52 | 55.74 | 48.53 | 39.21 | 53.61 | |||||||||||||
1988 | 40.05 | 44.41 | 45.61 | 50.28 | 54.84 | 59.58 | 65.29 | 65.35 | 60.52 | 55.40 | 45.37 | 41.89 | 52.38 | |||||||||||||
1989 | 40.53 | 35.88 | 43.69 | 53.42 | 55.97 | 63.18 | 64.47 | 65.24 | 64.03 | 53.06 | 46.93 | 42.87 | 52.44 | |||||||||||||
1990 | 42.50 | 39.93 | 47.10 | 52.08 | 54.65 | 59.83 | 67.98 | 67.24 | 63.37 | 51.16 | 46.52 | 35.24 | 52.30 | |||||||||||||
1991 | 39.95 | 47.70 | 44.13 | 49.05 | 54.31 | 58.83 | 66.76 | 66.56 | 62.83 | 52.87 | 47.30 | 43.69 | 52.83 | |||||||||||||
1992 | 43.90 | 47.26 | 50.31 | 53.10 | 59.81 | 64.93 | 66.66 | 66.77 | 59.97 | 54.35 | 45.45 | 38.77 | 54.27 | |||||||||||||
1993 | 37.85 | 42.29 | 48.11 | 50.52 | 59.61 | 60.52 | 61.13 | 65.47 | 61.83 | 55.37 | 41.97 | 41.40 | 52.17 | |||||||||||||
1994 | 44.85 | 40.39 | 48.52 | 52.30 | 58.15 | 60.55 | 67.89 | 67.32 | 64.33 | 52.79 | 42.35 | 41.74 | 53.43 | |||||||||||||
1995 | 46.35 | 45.91 | 47.79 | 51.75 | 60.10 | 62.68 | 67.00 | 62.92 | 63.98 | 52.45 | 49.08 | 42.39 | 54.37 | |||||||||||||
1996 | 39.66 | 43.12 | 47.24 | 51.50 | 53.06 | 60.42 | 67.84 | 66.42 | 59.20 | 51.13 | 43.13 | 39.24 | 51.83 | |||||||||||||
1997 | 41.06 | 41.89 | 44.74 | 49.15 | 58.16 | 59.42 | 64.44 | 67.73 | 62.15 | 51.29 | 48.42 | 41.48 | 52.49 | |||||||||||||
1998 | 42.16 | 45.71 | 46.58 | 50.37 | 54.82 | 59.87 | 67.58 | 66.76 | 63.13 | 52.61 | 46.67 | 39.90 | 53.01 | |||||||||||||
1999 | 41.95 | 42.50 | 44.27 | 48.50 | 51.82 | 58.13 | 62.42 | 64.76 | 60.78 | 52.13 | 47.90 | 41.95 | 51.43 | |||||||||||||
2000 | 40.26 | 43.69 | 44.45 | 50.88 | 53.82 | 60.57 | 64.27 | 63.45 | 60.17 | 52.79 | 42.45 | 40.71 | 51.46 | |||||||||||||
2001 | 41.98 | 40.66 | 45.39 | 47.95 | 55.35 | 57.57 | 62.42 | 64.77 | 59.75 | 50.89 | 46.67 | 41.48 | 51.24 | |||||||||||||
2002 | 40.73 | 41.84 | 41.85 | 48.75 | 53.02 | 61.08 | 64.95 | 65.19 | 60.58 | 51.39 | 47.03 | 42.98 | 51.62 | |||||||||||||
2003 | 45.73 | 41.61 | 46.79 | 48.88 | 54.77 | 62.80 | 67.82 | 66.39 | 62.58 | 54.23 | 42.82 | 41.73 | 53.01 | |||||||||||||
2004 | 40.26 | 44.47 | 47.60 | 53.28 | 56.95 | 63.33 | 68.13 | 67.08 | 58.83 | 53.29 | 44.97 | 42.48 | 53.39 | |||||||||||||
2005 | 42.10 | 42.57 | 49.05 | 50.75 | 58.21 | 59.92 | 65.55 | 66.74 | 59.50 | 53.98 | 42.90 | 42.63 | 52.82 | |||||||||||||
2006 | 46.56 | 42.91 | 45.50 | 50.30 | 56.79 | 63.08 | 67.50 | 65.90 | 62.28 | 52.26 | 44.15 | 40.56 | 53.15 | |||||||||||||
2007 | 37.98 | 43.62 | 47.11 | 50.62 | 56.56 | 60.32 | 67.76 | 65.60 | 59.92 | 50.53 | 44.32 | 39.79 | 52.01 | |||||||||||||
2008 | 38.69 | 43.93 | 43.48 | 47.00 | 56.11 | 58.35 | 64.92 | 65.89 | 60.98 | 51.65 | 49.15 | 36.90 | 51.42 | |||||||||||||
2009 | 39.05 | 41.62 | 41.69 | 49.17 | 56.24 | 63.77 | 69.45 | 65.58 | 62.40 | 52.24 | 46.62 | 37.90 | 52.14 | |||||||||||||
2010 | 46.97 | 46.79 | 47.03 | 49.48 | 53.18 | 58.32 | 64.53 | 65.37 | 60.88 | 53.29 | 43.15 | 43.16 | 52.68 | |||||||||||||
2011 | 41.77 | 39.25 | 45.15 | 45.53 | 52.32 | 59.38 | 64.16 | 65.82 | 63.98 | 52.19 | 43.05 | 39.16 | 50.98 | |||||||||||||
2012 | 39.74 | 43.22 | 43.15 | 50.78 | 55.27 | 58.27 | 64.26 | 67.89 | 62.72 | 53.79 | 46.90 | 41.48 | 52.29 | |||||||||||||
2013 | 38.23 | 44.41 | 47.92 | 50.85 | 58.60 | 64.77 | 68.03 | 69.44 | 63.45 | 51.68 | 47.88 | 39.71 | 53.75 | |||||||||||||
2014 | 44.32 | 41.73 | 48.50 | 51.97 | 59.08 | 62.02 | 69.19 | 69.15 | 64.77 | 57.95 | 45.97 | 45.26 | 54.99 | |||||||||||||
2015 | 45.06 | 48.75 | 50.52 | 51.37 | 59.13 | 67.67 | 71.24 | 68.71 | 60.50 | 57.24 | 43.83 | 42.97 | 55.58 | |||||||||||||
2016 | 43.71 | 47.40 | 49.35 | 56.70 | 59.77 | 63.52 | 66.81 | 68.73 | 61.22 | 54.82 | 50.87 | 37.95 | 55.07 | |||||||||||||
2017 | 37.85 | 41.32 | 46.05 | 50.63 | 57.92 | 62.90 | 67.32 | 70.26 | 64.68 | 53.19 | 46.67 | 40.05 | 53.24 | |||||||||||||
2018 | 44.98 | 41.14 | 46.32 | 51.33 | 61.16 | 62.63 | 70.68 | 68.81 | 62.32 | 53.77 | 48.55 | 44.18 | 54.66 | |||||||||||||
2019 | 45.00 | 36.66 | 48.44 | 52.45 | 60.48 | 63.63 | 67.50 | 69.10 | 62.78 | 50.84 | 46.63 | 44.45 | 54.00 | |||||||||||||
2020 | 45.05 | 43.64 | 44.81 | 52.32 | 59.27 | 61.82 | 67.03 | 67.90 | 65.52 | 54.31 | 46.33 | 44.39 | 54.36 | |||||||||||||
2021 | 43.82 | 41.43 | 45.56 | 53.00 | 56.90 | 66.05 | 68.00 | 67.47 | 61.88 | 51.82 | 47.88 | 38.02 | 53.49 | |||||||||||||
2022 | 40.98 | 42.11 | 46.94 | 47.05 | 52.61 | 61.13 | 68.82 | 70.00 | 64.82 | 57.63 | 41.92 | 38.79 | 52.73 | |||||||||||||
2023 | 43.48 | 40.68 | 44.56 | 48.50 | 60.89 | 61.98 | 68.52 | 69.90 | 62.02 | 54.56 | 44.83 | 45.48 | 53.78 | |||||||||||||
2024 | 41.56 | 44.31 | 47.15 | 50.28 | a | 55.45 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.82 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.41 | 42.75 | 45.41 | 49.56 | 55.82 | 60.74 | 65.46 | 65.48 | 60.79 | 52.58 | 45.12 | 40.80 | 52.07 | |||||||||||||
S.D. | 3.83 | 2.89 | 2.64 | 2.23 | 2.55 | 2.45 | 2.43 | 2.48 | 2.34 | 1.98 | 2.65 | 2.62 | 1.50 | |||||||||||||
SKEW | -1.08 | 0.03 | -0.17 | 0.16 | 0.13 | 0.18 | -0.03 | 0.09 | 0.11 | 0.36 | -0.53 | -0.18 | -0.16 | |||||||||||||
MAX | 46.97 | 48.75 | 50.52 | 56.70 | 61.16 | 67.67 | 71.24 | 71.08 | 65.67 | 57.95 | 50.87 | 45.48 | 55.58 | |||||||||||||
MIN | 24.87 | 35.64 | 39.11 | 44.55 | 50.61 | 55.47 | 60.05 | 60.58 | 55.32 | 47.73 | 35.78 | 35.24 | 47.93 | |||||||||||||
YRS | 80 | 80 | 80 | 80 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 | 79 |