YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.23 | 52.94 | 51.07 | 42.97 | 41.37 | 32.97 | 45.76 | f | ||||||
1950 | 31.42 | 37.07 | 37.61 | 44.77 | 45.16 | 48.80 | 56.61 | 50.45 | 51.80 | 45.42 | 43.87 | 40.00 | 44.42 | |||||||||||||
1951 | 36.57 | a | 36.25 | 40.06 | 46.60 | 45.94 | 50.77 | 56.26 | 53.00 | 51.03 | 43.06 | 38.60 | 36.84 | 44.58 | ||||||||||||
1952 | 34.42 | 38.28 | 38.03 | 44.00 | 46.42 | 47.57 | 52.48 | 53.32 | 51.10 | 47.74 | 39.90 | 38.00 | a | 44.27 | ||||||||||||
1953 | 42.48 | 37.32 | 36.93 | a | 42.73 | 42.81 | 45.37 | c | 55.90 | 50.87 | 49.53 | 42.45 | 40.37 | 38.52 | 43.77 | |||||||||||
1954 | 35.16 | 40.79 | 38.26 | 44.27 | 46.39 | 49.53 | 57.65 | 52.61 | 46.77 | 40.19 | 39.23 | 34.42 | 43.77 | |||||||||||||
1955 | 35.26 | 36.32 | 39.84 | 41.60 | 48.68 | 50.97 | 53.71 | 58.45 | 55.60 | 46.68 | 41.27 | 40.60 | a | 45.75 | ||||||||||||
1956 | 38.87 | 33.31 | 39.26 | 44.70 | 48.97 | 51.90 | 55.42 | 53.68 | 52.30 | 47.35 | 42.60 | 41.06 | 45.79 | |||||||||||||
1957 | 38.55 | 44.43 | 44.03 | 44.23 | 49.36 | i | 57.10 | 57.48 | 56.32 | 52.07 | 49.35 | 40.60 | 41.45 | 47.78 | a | |||||||||||
1958 | 42.26 | 44.21 | 40.45 | 45.67 | 50.29 | 51.93 | 55.58 | 60.87 | 54.67 | 52.29 | 42.33 | 40.47 | a | 48.42 | ||||||||||||
1959 | 39.94 | 39.50 | 43.55 | 47.93 | 47.71 | 54.33 | 61.90 | 60.74 | 57.50 | 51.71 | 46.23 | 42.35 | 49.45 | |||||||||||||
1960 | 36.74 | 41.41 | 45.65 | 46.47 | 50.45 | 55.40 | 59.74 | 57.23 | 56.63 | 48.29 | 41.41 | c | 39.10 | 48.21 | ||||||||||||
1961 | 42.35 | 44.64 | 42.48 | 45.97 | 48.52 | 54.37 | 60.16 | 61.39 | 53.47 | 50.74 | 44.17 | 40.16 | 49.03 | |||||||||||||
1962 | 41.33 | a | 41.32 | 38.13 | 45.86 | a | 45.71 | 50.43 | 54.35 | 56.87 | 53.07 | 47.77 | 43.60 | 39.55 | 46.50 | |||||||||||
1963 | 35.68 | 46.71 | 39.06 | 41.17 | 49.97 | 52.67 | 54.52 | 55.81 | 57.23 | 51.39 | 43.77 | 37.84 | 47.15 | |||||||||||||
1964 | 37.39 | 36.00 | a | 39.16 | 43.40 | 45.35 | 50.63 | 55.19 | 58.23 | 51.90 | 52.68 | 41.10 | 43.03 | 46.17 | ||||||||||||
1965 | 39.35 | 37.61 | 41.48 | 45.07 | 47.71 | 51.43 | 54.77 | 60.23 | 51.00 | 49.13 | 46.13 | 37.77 | 46.81 | |||||||||||||
1966 | 37.16 | 35.89 | 42.87 | 48.27 | 51.48 | 53.70 | 55.35 | 59.68 | 54.70 | 49.39 | 45.00 | 39.84 | 47.78 | |||||||||||||
1967 | 38.35 | 40.00 | 42.32 | 38.10 | 49.03 | 50.63 | 59.32 | 62.87 | 60.60 | 50.39 | 47.57 | 38.77 | 48.16 | |||||||||||||
1968 | 37.32 | 46.03 | 42.16 | 44.23 | 50.13 | 53.73 | 59.06 | 55.48 | 55.43 | 50.74 | 44.93 | 35.19 | 47.87 | |||||||||||||
1969 | 42.94 | 39.61 | 39.81 | 46.07 | 52.19 | 55.13 | 58.87 | 59.35 | 57.13 | 46.84 | 48.07 | 40.94 | 48.91 | |||||||||||||
1970 | 42.94 | 43.39 | 42.48 | 41.03 | 49.13 | 54.77 | 58.81 | 58.68 | 52.07 | 49.65 | 45.03 | 38.71 | 48.06 | |||||||||||||
1971 | 40.03 | 39.00 | 40.42 | 42.80 | 48.26 | 53.62 | a | 58.87 | 61.00 | 56.60 | 45.68 | 40.90 | 38.32 | 47.13 | ||||||||||||
1972 | 37.23 | 40.14 | 46.97 | 43.37 | 49.58 | 56.30 | 58.94 | 60.35 | 56.23 | 50.52 | 41.47 | 37.16 | 48.19 | |||||||||||||
1973 | 37.26 | 43.89 | 40.45 | 45.90 | 51.16 | 54.90 | 56.32 | 58.97 | 53.53 | 48.10 | 40.57 | 39.29 | 47.53 | |||||||||||||
1974 | 41.58 | 38.89 | 43.97 | 42.17 | 50.35 | 53.83 | 58.39 | 56.45 | 56.63 | 50.81 | 40.33 | 39.77 | 47.77 | |||||||||||||
1975 | 37.65 | 38.07 | 42.13 | 41.37 | 49.35 | 53.20 | 56.71 | 54.48 | 55.50 | 47.48 | 39.55 | a | 38.03 | 46.13 | ||||||||||||
1976 | 37.06 | 41.34 | 40.74 | 41.83 | 50.74 | 53.20 | 59.10 | 54.45 | 60.07 | 51.77 | 46.17 | 36.55 | 47.75 | |||||||||||||
1977 | 38.73 | a | 40.93 | 38.00 | 44.33 | 46.19 | 53.90 | 55.61 | 59.84 | 53.47 | 49.10 | 44.50 | 44.81 | 47.45 | ||||||||||||
1978 | 42.42 | 42.61 | 46.74 | 44.07 | 48.87 | 54.13 | 56.10 | 56.52 | 55.97 | 52.52 | 40.33 | 34.68 | 47.91 | |||||||||||||
1979 | 37.68 | 37.43 | 42.48 | 43.73 | 49.61 | 53.17 | 56.58 | 57.84 | 56.93 | 49.65 | 40.40 | 38.03 | 46.96 | |||||||||||||
1980 | 46.23 | 44.76 | 39.87 | 45.23 | 46.79 | b | 50.23 | 57.71 | 58.29 | 54.07 | 48.81 | 40.76 | a | 40.81 | 47.80 | |||||||||||
1981 | 41.16 | 42.00 | 42.42 | 46.17 | 50.84 | 58.73 | 56.87 | 58.48 | 55.33 | 47.80 | a | 43.67 | 40.55 | 48.67 | ||||||||||||
1982 | 37.71 | 42.68 | 39.07 | b | 43.50 | 50.29 | 50.70 | 55.35 | 58.45 | 56.67 | 48.32 | 41.17 | 38.39 | 46.86 | ||||||||||||
1983 | 41.84 | 43.75 | 45.10 | 43.10 | 49.19 | 55.07 | 54.94 | 61.58 | 60.73 | 53.73 | a | 43.97 | 41.58 | 49.55 | ||||||||||||
1984 | 41.97 | 39.10 | 43.06 | 43.73 | 51.77 | 54.57 | 61.03 | 61.23 | 61.17 | 47.94 | 40.07 | a | 37.35 | 48.58 | ||||||||||||
1985 | 39.48 | 38.21 | 38.00 | 46.37 | 48.03 | 52.87 | 60.58 | 54.90 | 53.50 | 48.61 | 41.40 | 40.97 | 46.91 | |||||||||||||
1986 | 43.39 | 44.29 | 46.19 | 45.10 | 48.81 | 54.17 | a | 55.94 | 57.94 | 52.57 | b | 48.27 | a | 45.57 | 37.61 | 48.32 | ||||||||||
1987 | 36.87 | 40.29 | 40.84 | 46.27 | 52.29 | 53.80 | 53.10 | 55.65 | 55.60 | 55.32 | 42.70 | 36.87 | 47.47 | |||||||||||||
1988 | 38.35 | 41.90 | 43.29 | 45.10 | 49.10 | 50.67 | 59.81 | 57.29 | 54.10 | 51.77 | 43.87 | 37.90 | 47.76 | |||||||||||||
1989 | 36.45 | 36.64 | 44.16 | 49.47 | 48.52 | 54.70 | 57.23 | 55.90 | 52.90 | 50.35 | 45.70 | 39.03 | 47.59 | |||||||||||||
1990 | 39.23 | 39.43 | 44.71 | 49.43 | 49.65 | 54.40 | 59.24 | b | 58.48 | 55.23 | 50.00 | 43.00 | 34.42 | 48.10 | ||||||||||||
1991 | 40.71 | 43.54 | 41.48 | 44.70 | 46.71 | 52.60 | 58.10 | 58.73 | a | 57.67 | 54.19 | 44.77 | 41.97 | 48.76 | ||||||||||||
1992 | 40.45 | 49.17 | 46.65 | 50.53 | 56.45 | 54.03 | 60.26 | 61.37 | a | 55.10 | 52.03 | 44.33 | 36.45 | 50.57 | ||||||||||||
1993 | 40.61 | 41.82 | 45.29 | 49.00 | 50.74 | 57.07 | 59.00 | 57.61 | 55.60 | 49.90 | a | 43.13 | 39.03 | 49.07 | ||||||||||||
1994 | 38.84 | 39.79 | 44.16 | 47.13 | 49.29 | 53.33 | 56.03 | 57.39 | 51.80 | 45.94 | 36.23 | 39.16 | 46.59 | |||||||||||||
1995 | 42.29 | 46.46 | 44.48 | 43.23 | 47.00 | 51.10 | 54.35 | 55.29 | 53.50 | 48.06 | 43.93 | 39.71 | 47.45 | |||||||||||||
1996 | 38.06 | 43.03 | 40.04 | d | 46.27 | 46.77 | 52.10 | 57.77 | 58.42 | 52.60 | 47.26 | 43.70 | 42.00 | 47.34 | ||||||||||||
1997 | 43.19 | 38.52 | a | 41.87 | 46.67 | 53.87 | 55.53 | 55.26 | 57.19 | 56.50 | 45.63 | a | 41.37 | 35.94 | 47.63 | |||||||||||
1998 | 35.94 | 36.75 | 40.55 | 38.37 | 44.32 | 48.97 | 54.71 | 57.94 | 55.53 | 46.06 | 41.93 | 39.84 | 45.08 | |||||||||||||
1999 | 41.00 | 40.61 | 40.48 | 43.53 | 48.23 | 50.33 | 55.61 | 53.87 | 53.23 | 47.52 | 42.87 | 39.35 | 46.39 | |||||||||||||
2000 | 41.81 | 42.66 | 41.87 | 45.97 | 50.61 | 54.07 | 54.45 | 58.03 | 54.27 | 48.92 | f | 36.20 | 39.39 | 47.21 | a | |||||||||||
2001 | 37.03 | 40.29 | 45.50 | a | 42.57 | 52.19 | 52.73 | 54.13 | 54.97 | 54.13 | 51.10 | 45.43 | 38.19 | 47.36 | ||||||||||||
2002 | 36.61 | 38.32 | 39.42 | 44.27 | 47.42 | 53.03 | 57.29 | 55.35 | 55.63 | 49.10 | 45.45 | a | 37.81 | 46.64 | ||||||||||||
2003 | 43.97 | 40.46 | 42.94 | 41.34 | a | 49.13 | 54.93 | 59.13 | 57.87 | 56.37 | 52.35 | 40.77 | 37.61 | 48.07 | ||||||||||||
2004 | 38.80 | a | 38.97 | 47.35 | 46.33 | 49.58 | 54.50 | 56.71 | 56.29 | 55.38 | a | 49.00 | 42.40 | 41.20 | a | 48.04 | ||||||||||
2005 | 41.90 | 46.93 | 46.61 | 44.53 | 52.10 | 52.93 | 60.81 | 59.16 | 52.13 | 51.29 | 45.53 | 42.68 | 49.72 | |||||||||||||
2006 | 40.90 | 40.07 | a | 38.81 | 45.33 | 53.52 | 59.53 | 64.87 | a | 57.97 | 54.93 | 49.10 | a | 45.03 | 40.00 | 49.17 | ||||||||||
2007 | 39.90 | 40.71 | 45.03 | 46.53 | 49.84 | 53.17 | 59.74 | 60.39 | 54.40 | 50.81 | 44.90 | 37.52 | 48.58 | |||||||||||||
2008 | 40.55 | 39.24 | 42.39 | 43.23 | 48.55 | 54.23 | 58.81 | 58.97 | 56.87 | 49.90 | 47.27 | 37.35 | 48.11 | |||||||||||||
2009 | 44.74 | 39.07 | 41.13 | 43.20 | 52.97 | 53.37 | 58.23 | 57.00 | 57.07 | 48.55 | 42.41 | a | 38.94 | 48.06 | ||||||||||||
2010 | 40.84 | 41.14 | 42.32 | 42.93 | 47.19 | 54.07 | 57.10 | 55.39 | 54.40 | 53.81 | 43.17 | 42.87 | 47.94 | |||||||||||||
2011 | 41.29 | 38.21 | 43.71 | 48.63 | 48.29 | 52.40 | 59.03 | 58.26 | 56.90 | 53.06 | 44.07 | a | 38.00 | 48.49 | ||||||||||||
2012 | 42.39 | 41.93 | 42.77 | 47.20 | 52.68 | 55.93 | 59.03 | 65.06 | 61.57 | 54.48 | 47.63 | 42.48 | 51.10 | |||||||||||||
2013 | 41.00 | 39.21 | 46.35 | 50.30 | 54.16 | 57.97 | 61.81 | 59.65 | 59.37 | 49.58 | 47.43 | 40.77 | 50.63 | |||||||||||||
2014 | 45.42 | 45.00 | 48.90 | 49.37 | 54.52 | 57.00 | 63.29 | 61.65 | 61.53 | 53.87 | 48.17 | 46.29 | 52.92 | |||||||||||||
2015 | 44.81 | 46.25 | 49.71 | 48.37 | 50.97 | 59.27 | 62.74 | 63.13 | 63.67 | 59.87 | 44.20 | 39.39 | 52.70 | |||||||||||||
2016 | 43.52 | 47.62 | 47.42 | 50.53 | 52.35 | 59.90 | 62.13 | 60.90 | 58.53 | 54.39 | 46.27 | 44.39 | 52.33 | |||||||||||||
2017 | 44.26 | 46.79 | 47.06 | 50.07 | 51.00 | 58.30 | 64.74 | l | 64.19 | 59.97 | 54.48 | 49.33 | 43.65 | 51.74 | a | |||||||||||
2018 | 46.90 | 40.50 | 45.39 | 48.00 | 53.00 | c | 56.53 | 66.71 | 63.77 | 58.67 | 54.65 | 47.83 | a | 42.29 | 52.02 | |||||||||||
2019 | 43.84 | 38.43 | 45.61 | 50.87 | 51.16 | 57.63 | 61.48 | 60.74 | 59.97 | 50.68 | 44.60 | 42.81 | 50.65 | |||||||||||||
2020 | 42.97 | 42.76 | 44.74 | 50.83 | 54.26 | 57.60 | 58.58 | 63.42 | 58.80 | 54.84 | 43.27 | 41.84 | 51.16 | |||||||||||||
2021 | 43.07 | a | 43.71 | 41.16 | 48.70 | 52.97 | 57.90 | 63.32 | 61.77 | 58.20 | 50.19 | 48.97 | 40.71 | 50.89 | ||||||||||||
2022 | 42.48 | 43.63 | a | 46.65 | 49.77 | 51.35 | 58.80 | 60.00 | 62.90 | 63.77 | 54.97 | 41.23 | 41.06 | 51.38 | ||||||||||||
2023 | 41.84 | 38.75 | 42.61 | 46.67 | 51.81 | 53.97 | 61.58 | 61.32 | 59.13 | 53.23 | 46.27 | 44.52 | 50.14 | |||||||||||||
2024 | 42.26 | 43.90 | 44.78 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.08 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.17 | 41.06 | 42.60 | 45.41 | 49.68 | 53.81 | 57.93 | 58.18 | 55.61 | 49.90 | 43.38 | 39.53 | 48.09 | |||||||||||||
S.D. | 3.04 | 3.25 | 2.99 | 2.87 | 2.62 | 2.87 | 2.90 | 3.13 | 3.27 | 3.34 | 2.80 | 2.58 | 1.99 | |||||||||||||
SKEW | -0.20 | 0.26 | 0.19 | -0.02 | -0.02 | -0.12 | 0.52 | -0.15 | 0.24 | -0.12 | -0.11 | 0.06 | 0.24 | |||||||||||||
MAX | 46.90 | 49.17 | 49.71 | 50.87 | 56.45 | 59.90 | 66.71 | 65.06 | 63.77 | 59.87 | 49.33 | 46.29 | 52.92 | |||||||||||||
MIN | 31.42 | 33.31 | 36.93 | 38.10 | 42.81 | 45.37 | 52.48 | 50.45 | 46.77 | 40.19 | 36.20 | 32.97 | 43.77 | |||||||||||||
YRS | 75 | 75 | 74 | 74 | 73 | 74 | 74 | 75 | 75 | 74 | 75 | 75 | 71 |