YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.32 | 47.94 | 44.41 | a | 40.45 | 38.27 | 33.10 | 42.91 | f | |||||
1951 | 31.00 | 31.00 | 34.87 | 39.30 | 38.63 | a | 42.30 | 52.16 | 51.81 | 48.13 | 44.10 | 37.70 | 33.84 | 40.40 | ||||||||||||
1952 | 32.13 | 33.45 | 34.68 | 40.20 | 40.74 | 39.90 | 50.84 | 54.19 | 51.43 | 41.48 | 33.50 | 33.03 | 40.46 | |||||||||||||
1953 | 36.00 | 26.68 | 31.52 | 34.53 | 36.03 | a | 40.80 | 56.29 | 51.23 | 45.73 | 40.03 | a | 38.47 | 32.13 | 39.12 | |||||||||||
1954 | 31.17 | a | 36.36 | 35.23 | 39.33 | 40.90 | 43.70 | 57.06 | 46.81 | 46.30 | 39.16 | 37.50 | 33.42 | 40.58 | ||||||||||||
1955 | 31.84 | 31.14 | 33.97 | 32.30 | 39.39 | 40.37 | 50.03 | 59.71 | 48.69 | a | 40.97 | 35.57 | 33.83 | a | 39.82 | |||||||||||
1956 | 32.03 | 27.97 | 28.97 | ----- | z | 41.48 | b | 44.77 | 51.10 | a | 45.33 | a | 50.43 | 40.06 | 37.07 | 33.71 | 39.36 | a | ||||||||
1957 | 36.65 | 37.68 | 36.19 | 36.69 | a | 41.48 | 47.17 | 51.81 | 53.90 | 45.73 | 41.61 | 33.50 | 35.65 | 41.50 | ||||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 32.42 | 31.96 | 33.48 | 40.83 | 39.52 | 44.13 | 58.23 | 54.03 | 48.17 | 43.37 | a | 40.47 | 38.68 | 42.11 | ||||||||||||
1960 | 29.68 | 32.00 | 36.10 | a | 36.60 | 41.03 | 47.20 | 53.84 | 52.39 | 52.97 | 41.06 | 34.47 | 30.06 | 40.62 | ||||||||||||
1961 | 34.58 | 31.14 | 34.00 | 36.13 | 37.29 | 47.17 | 54.81 | 55.61 | 45.93 | 41.00 | 36.21 | a | 34.19 | 40.67 | ||||||||||||
1962 | 34.03 | 35.07 | 31.71 | 35.93 | 38.35 | 42.97 | 47.42 | 51.58 | 48.23 | 39.77 | 32.63 | 31.03 | 39.06 | |||||||||||||
1963 | 28.17 | g | 37.70 | a | 31.81 | 33.87 | 39.45 | 45.13 | 48.71 | 54.68 | 54.17 | 45.42 | 36.07 | 31.29 | 41.66 | a | ||||||||||
1964 | 30.23 | 29.21 | 31.13 | 35.63 | 37.84 | 44.23 | 53.29 | 54.16 | 45.13 | 47.42 | 36.63 | 35.03 | 39.99 | |||||||||||||
1965 | 35.48 | ----- | z | 35.35 | 37.33 | 38.84 | 42.23 | 50.77 | 53.58 | ----- | z | 44.23 | 40.50 | 35.27 | a | 41.36 | b | |||||||||
1966 | 30.35 | 31.61 | 34.61 | 36.13 | 43.16 | 46.03 | 52.13 | 55.16 | 49.87 | 43.23 | 39.33 | ----- | z | 41.97 | a | |||||||||||
1967 | 32.77 | 30.32 | 36.13 | 34.27 | 40.74 | 43.27 | 57.32 | 60.03 | 52.33 | 43.06 | 40.87 | 33.81 | 42.08 | |||||||||||||
1968 | 31.13 | 37.93 | 35.16 | 35.63 | 41.23 | 44.93 | 55.23 | 51.19 | 47.10 | 40.81 | 38.03 | 30.23 | 40.72 | |||||||||||||
1969 | 39.19 | 35.57 | 33.00 | 36.33 | 39.19 | 45.47 | 54.06 | 56.61 | 52.80 | 37.26 | 41.10 | 30.48 | 41.76 | |||||||||||||
1970 | 33.29 | 35.00 | 35.13 | 32.43 | 39.87 | 46.80 | 56.23 | 59.42 | 46.40 | 42.06 | 36.83 | 33.00 | 41.37 | |||||||||||||
1971 | 31.55 | 30.29 | 31.77 | 33.63 | 39.13 | 42.30 | 52.06 | 57.48 | 49.17 | 38.42 | 32.47 | 30.97 | 39.10 | |||||||||||||
1972 | 28.32 | 29.97 | 33.26 | 33.33 | 40.77 | 49.17 | 54.87 | 52.48 | 47.70 | 43.84 | 34.97 | 32.94 | 40.13 | |||||||||||||
1973 | 31.07 | a | 34.36 | 34.06 | 33.97 | 39.71 | 45.57 | 48.74 | 50.74 | 40.83 | 38.77 | 33.67 | 31.13 | 38.55 | ||||||||||||
1974 | 33.03 | 30.50 | 34.90 | 33.90 | 40.42 | 45.73 | 53.48 | 49.19 | 52.53 | 43.13 | 35.50 | 28.71 | 40.09 | |||||||||||||
1975 | 31.71 | 30.25 | 33.13 | 34.63 | 37.61 | 42.20 | 52.06 | 48.03 | 51.03 | 38.16 | 34.60 | 32.61 | 38.84 | |||||||||||||
1976 | 32.42 | 34.31 | 31.90 | 33.70 | 41.00 | 42.97 | 52.81 | 46.45 | 52.50 | b | 43.74 | 38.20 | 31.90 | 40.16 | ||||||||||||
1977 | 36.32 | 30.36 | 28.68 | 34.47 | 38.35 | 43.00 | 49.77 | 55.68 | 46.47 | 43.29 | 36.33 | ----- | z | 40.25 | a | |||||||||||
1978 | 35.81 | 37.21 | 42.06 | 37.23 | 37.77 | 42.90 | 50.94 | 49.26 | 49.00 | 44.94 | 33.43 | 29.48 | 40.84 | |||||||||||||
1979 | 32.13 | a | 30.32 | 35.77 | 34.07 | 40.77 | 44.33 | 48.74 | 49.16 | 50.82 | b | 39.90 | 33.23 | 31.81 | 39.26 | |||||||||||
1980 | 41.10 | b | 38.34 | 35.65 | 39.10 | 42.32 | 41.33 | 53.19 | 53.06 | 47.80 | 44.00 | 37.00 | 37.45 | 42.53 | ||||||||||||
1981 | 36.03 | 36.57 | 37.87 | 40.53 | 42.77 | 50.60 | 53.84 | 54.81 | 49.17 | 41.16 | 37.40 | 34.17 | a | 42.91 | ||||||||||||
1982 | 35.83 | a | 37.96 | 38.57 | a | 39.00 | 43.23 | 43.90 | 49.74 | 53.71 | 50.33 | 38.87 | 36.62 | a | 33.62 | b | 41.78 | |||||||||
1983 | 38.29 | 36.79 | 41.10 | a | 37.23 | 41.94 | 43.70 | 48.23 | 57.06 | 54.53 | 47.06 | 36.83 | 36.55 | 43.28 | ||||||||||||
1984 | 35.87 | 31.31 | 34.29 | 38.60 | 43.74 | 46.47 | 57.39 | 55.55 | 56.07 | 41.03 | 33.90 | 33.94 | 42.35 | |||||||||||||
1985 | ----- | z | 33.21 | 33.80 | a | 38.23 | 39.77 | 43.14 | a | 55.03 | 47.42 | 43.97 | 43.16 | 36.90 | a | 36.52 | 41.01 | a | ||||||||
1986 | 39.68 | 37.04 | 39.37 | a | 37.50 | 40.61 | 45.50 | 49.39 | 55.10 | 42.67 | 41.74 | 37.83 | 32.39 | 41.57 | ||||||||||||
1987 | 31.65 | 34.00 | a | 36.77 | 39.20 | 45.84 | 46.03 | 46.55 | 51.53 | a | 46.63 | 47.42 | 38.60 | 30.39 | 41.22 | |||||||||||
1988 | 35.07 | a | 36.90 | 33.83 | a | 39.43 | 41.00 | 44.23 | 52.42 | 50.52 | 45.63 | 43.45 | 36.70 | 32.19 | 40.95 | |||||||||||
1989 | 31.53 | a | 33.04 | 35.97 | 39.77 | 40.13 | 44.33 | 51.52 | 47.63 | a | 46.97 | 42.29 | 35.27 | 32.77 | 40.10 | |||||||||||
1990 | 33.03 | 29.75 | 36.13 | 42.20 | 39.19 | 47.97 | 53.16 | 49.90 | 48.03 | 42.42 | 35.13 | 30.55 | b | 40.62 | ||||||||||||
1991 | 31.84 | 33.96 | 35.48 | 37.60 | 37.94 | 39.63 | 48.74 | 51.58 | 49.80 | 44.03 | 36.73 | 32.48 | b | 39.99 | ||||||||||||
1992 | 32.55 | i | 39.54 | a | 38.77 | 40.67 | 47.23 | 44.57 | 50.13 | 55.65 | 45.57 | 39.84 | 33.20 | 28.71 | 42.17 | a | ||||||||||
1993 | 35.94 | 36.82 | 35.73 | t | 38.03 | a | 40.57 | x | 47.00 | a | 45.80 | a | 47.68 | f | 47.57 | b | 43.77 | a | 37.59 | a | 31.90 | a | 40.49 | c | ||
1994 | 33.97 | 34.64 | 38.55 | 38.45 | a | 42.41 | b | 47.73 | 50.58 | 55.71 | 47.70 | 39.90 | 32.13 | 33.23 | 41.25 | |||||||||||
1995 | ----- | z | 40.75 | 38.45 | 37.23 | 43.10 | 45.27 | 50.90 | 55.73 | a | 51.43 | 41.74 | 38.80 | 32.61 | 43.27 | a | ||||||||||
1996 | 33.19 | 37.90 | 36.19 | 38.79 | a | 40.84 | 42.93 | 55.06 | 54.29 | 47.97 | 39.58 | 38.50 | 33.81 | 41.59 | ||||||||||||
1997 | 36.71 | 31.89 | 33.35 | 37.72 | a | 44.97 | ----- | z | ----- | z | 54.23 | a | 53.07 | b | 40.23 | a | 36.43 | 32.53 | a | 40.12 | b | |||||
1998 | 34.33 | a | 33.96 | 37.28 | b | 37.48 | e | 40.71 | 43.20 | 51.55 | 56.65 | 47.97 | a | 37.94 | 32.82 | b | 30.71 | 40.38 | ||||||||
1999 | 31.42 | 32.15 | a | 33.20 | a | 35.66 | a | 40.07 | a | 45.17 | 51.13 | a | 48.17 | a | 47.57 | 39.97 | a | 33.66 | a | 30.97 | b | 39.09 | ||||
2000 | 35.10 | 36.93 | b | 35.10 | a | 37.15 | c | 42.73 | a | 46.21 | b | 48.57 | c | 53.84 | 46.90 | 41.48 | 29.34 | a | 31.69 | b | 40.42 | |||||
2001 | 32.42 | 33.11 | a | 36.62 | b | 36.59 | c | 45.03 | 47.76 | a | 48.52 | 53.80 | a | 48.55 | a | 42.43 | a | 38.11 | b | 31.43 | c | 41.20 | ||||
2002 | 30.06 | 29.92 | b | 31.87 | a | 36.59 | a | 38.74 | 43.59 | a | 53.94 | 49.68 | 52.34 | a | 39.55 | b | 37.17 | a | 30.71 | 39.51 | ||||||
2003 | 35.47 | a | 36.78 | a | 36.68 | 35.69 | a | 42.58 | 46.20 | 55.97 | 58.57 | a | 52.43 | 46.40 | a | 37.80 | 32.94 | 43.12 | ||||||||
2004 | 32.06 | 33.00 | 38.13 | a | 38.10 | 41.48 | 43.63 | 52.81 | 52.39 | 48.10 | 42.77 | 34.13 | 34.00 | 40.88 | ||||||||||||
2005 | 36.74 | 39.04 | 38.65 | 36.77 | 42.71 | 44.53 | 55.10 | 57.10 | 43.93 | 41.93 | a | 36.83 | 32.74 | 42.17 | ||||||||||||
2006 | 31.58 | 33.39 | ----- | z | 38.73 | 43.55 | 49.10 | 61.90 | a | 52.16 | 49.77 | 41.42 | 37.23 | 30.94 | 42.71 | a | ||||||||||
2007 | 27.52 | 34.68 | 35.16 | 37.93 | 40.23 | 42.97 | 54.39 | ----- | z | ----- | z | 41.73 | a | 37.23 | 31.20 | a | 38.30 | b | ||||||||
2008 | 34.97 | 33.45 | 31.67 | a | 33.77 | 40.03 | 44.80 | 53.71 | 55.55 | 50.60 | 43.77 | a | 42.00 | 35.10 | 41.62 | |||||||||||
2009 | 38.45 | 34.04 | 32.74 | 35.83 | 42.26 | 47.33 | 53.42 | 49.48 | 50.23 | 40.00 | 35.33 | 33.00 | 41.01 | |||||||||||||
2010 | 34.55 | 34.71 | 34.68 | 35.37 | 37.35 | 42.33 | 51.42 | 50.45 | 45.93 | 45.26 | 35.14 | a | 35.65 | 40.24 | ||||||||||||
2011 | 33.90 | 31.50 | 34.84 | 39.40 | 39.29 | 41.23 | 51.10 | 51.32 | 50.57 | 42.00 | 36.03 | 29.97 | 40.10 | |||||||||||||
2012 | 33.32 | 33.00 | 34.90 | a | 37.50 | 38.87 | a | 41.50 | 50.90 | 59.42 | 54.07 | 42.26 | 35.77 | 32.58 | 41.17 | |||||||||||
2013 | 32.35 | 29.86 | 34.81 | 36.73 | 40.71 | 43.17 | 55.84 | 53.03 | 49.97 | 38.74 | 37.63 | 35.84 | 40.72 | |||||||||||||
2014 | 36.52 | 34.04 | 37.16 | 39.20 | 43.74 | 43.00 | 54.48 | 53.23 | 52.50 | 42.97 | 38.80 | 36.19 | 42.65 | |||||||||||||
2015 | 35.61 | 35.64 | 36.10 | 37.43 | 43.87 | 49.23 | 52.26 | 53.68 | 53.70 | 48.84 | 37.07 | 32.39 | 42.98 | |||||||||||||
2016 | 34.52 | 36.66 | 35.61 | 39.27 | 44.00 | 49.87 | 53.32 | 53.65 | 48.83 | 43.19 | 39.17 | 38.03 | 43.01 | |||||||||||||
2017 | 37.74 | 37.04 | 38.58 | 36.23 | 43.67 | a | 47.47 | 57.97 | 54.90 | 49.13 | 43.87 | 40.77 | 36.32 | 43.64 | ||||||||||||
2018 | 39.48 | 32.54 | 38.35 | 37.63 | 44.10 | 44.53 | 59.48 | 56.77 | 48.73 | 44.84 | 38.10 | 34.48 | 43.25 | |||||||||||||
2019 | 35.94 | 32.61 | 36.55 | 39.30 | 42.52 | 46.63 | 49.58 | 50.52 | 48.83 | 39.16 | 36.83 | 36.06 | 41.21 | |||||||||||||
2020 | 31.48 | 33.07 | 37.58 | 41.87 | 42.10 | 44.57 | 47.55 | 55.16 | 50.07 | 42.32 | 35.03 | 33.03 | 41.15 | |||||||||||||
2021 | 33.53 | a | 33.50 | 33.84 | 35.76 | a | 39.94 | 49.83 | 58.65 | 56.73 | a | 51.60 | 39.97 | a | 40.43 | 35.06 | 42.40 | |||||||||
2022 | 36.90 | 32.50 | 34.48 | 37.50 | 39.32 | 47.87 | 54.19 | 58.94 | 55.13 | 43.19 | 33.90 | 32.81 | 42.23 | |||||||||||||
2023 | 34.68 | 31.61 | 34.97 | 34.93 | 42.65 | 42.33 | 53.42 | 53.58 | 48.67 | 43.35 | 35.23 | 33.45 | 40.74 | |||||||||||||
2024 | 32.13 | 35.14 | 35.06 | 33.60 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.11 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.90 | 33.80 | 35.17 | 37.04 | 40.99 | 44.78 | 52.65 | 53.24 | 49.09 | 42.08 | 36.50 | 33.02 | 41.04 | |||||||||||||
S.D. | 2.78 | 2.98 | 2.53 | 2.24 | 2.23 | 2.50 | 3.20 | 3.43 | 3.07 | 2.41 | 2.42 | 2.16 | 1.24 | |||||||||||||
SKEW | 0.30 | 0.07 | 0.04 | -0.01 | 0.31 | 0.25 | 0.31 | -0.16 | -0.03 | 0.42 | -0.16 | 0.38 | 0.14 | |||||||||||||
MAX | 41.10 | 40.75 | 42.06 | 42.20 | 47.23 | 50.60 | 61.90 | 60.03 | 56.07 | 48.84 | 42.00 | 38.68 | 43.64 | |||||||||||||
MIN | 27.52 | 26.68 | 28.68 | 32.30 | 36.03 | 39.63 | 45.80 | 45.33 | 40.83 | 37.26 | 29.34 | 28.71 | 38.55 | |||||||||||||
YRS | 69 | 72 | 71 | 71 | 71 | 71 | 72 | 71 | 71 | 73 | 73 | 71 | 60 |