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 | 36.60 | t | 41.03 | 49.45 | a | 51.06 | 52.03 | 48.00 | 46.00 | 39.63 | 41.16 | 46.05 | d | |||||||
1951 | 33.45 | 34.75 | 31.42 | 37.93 | a | 43.29 | 46.47 | 49.45 | 47.48 | 45.13 | 43.81 | 37.23 | 31.81 | 40.19 | ||||||||||||
1952 | 30.94 | 33.86 | 34.03 | 36.17 | 40.71 | 45.43 | 46.77 | 48.84 | 46.37 | 42.16 | 27.83 | 31.65 | 38.73 | |||||||||||||
1953 | 35.13 | 33.71 | 33.39 | 37.69 | a | 42.06 | 45.37 | 47.58 | 50.90 | 46.73 | 41.90 | a | 42.69 | a | 36.42 | 41.13 | ||||||||||
1954 | 33.80 | a | 34.48 | a | 30.60 | a | 37.50 | 41.74 | 45.10 | 46.90 | 46.97 | 43.66 | a | 37.03 | 38.77 | 30.90 | 38.95 | |||||||||
1955 | 30.65 | 28.82 | 30.55 | 34.40 | 40.00 | 48.27 | 50.03 | 47.16 | 45.70 | 43.61 | 36.10 | a | 35.43 | a | 39.23 | |||||||||||
1956 | 34.58 | 28.93 | 33.87 | 38.43 | 44.77 | 46.90 | 50.68 | 49.87 | 45.59 | a | 41.13 | 33.68 | b | 33.61 | 40.17 | |||||||||||
1957 | 24.81 | 32.96 | 37.66 | b | 39.67 | 46.10 | 49.03 | 48.32 | 48.30 | a | 47.83 | 42.03 | 31.97 | 34.90 | 40.30 | |||||||||||
1958 | 34.77 | 41.11 | 33.19 | 38.67 | 45.32 | 51.83 | 53.10 | 51.35 | 46.63 | 38.84 | 38.50 | 39.13 | 42.70 | |||||||||||||
1959 | 36.87 | 32.57 | 34.90 | 38.47 | 41.39 | 48.90 | 49.68 | 47.77 | 47.23 | 43.03 | 34.23 | 33.52 | 40.71 | |||||||||||||
1960 | 32.29 | 32.72 | 36.45 | 39.50 | 41.97 | 45.37 | 49.00 | 47.94 | 45.03 | a | 40.83 | a | 35.90 | 33.77 | 40.06 | |||||||||||
1961 | 34.13 | 39.64 | 37.90 | 38.23 | 44.29 | 49.30 | 50.26 | 52.29 | 44.00 | 40.74 | 32.73 | 35.47 | a | 41.58 | ||||||||||||
1962 | 26.61 | 32.32 | 34.48 | 40.27 | 42.19 | 45.17 | 48.23 | 50.13 | 47.70 | 42.52 | 39.80 | 33.61 | 40.25 | |||||||||||||
1963 | 23.84 | 39.39 | 35.32 | 38.17 | 42.32 | 47.59 | a | 48.06 | 49.65 | 50.63 | 43.45 | 39.50 | 33.19 | 40.93 | ||||||||||||
1964 | 34.61 | 28.97 | 34.00 | 36.37 | 39.29 | 46.40 | 49.84 | 49.48 | 43.87 | 42.00 | 36.60 | 34.90 | 39.69 | |||||||||||||
1965 | 34.87 | a | 34.14 | 31.77 | 40.57 | 39.48 | 45.23 | 49.77 | 51.74 | 43.10 | 43.71 | 40.70 | 32.10 | 40.60 | ||||||||||||
1966 | 33.90 | 31.89 | 34.71 | 37.30 | 39.26 | 46.10 | 49.77 | 48.55 | 48.50 | 40.32 | 39.00 | 36.19 | 40.46 | |||||||||||||
1967 | 34.81 | 32.52 | a | 34.52 | 35.07 | 40.39 | 49.70 | 50.52 | 50.90 | 46.86 | a | 42.42 | 38.07 | 31.97 | 40.64 | |||||||||||
1968 | 32.42 | 37.10 | 36.94 | 35.70 | 41.87 | 48.13 | 50.48 | 51.55 | 47.37 | 39.61 | 37.80 | 33.29 | 41.02 | |||||||||||||
1969 | 30.26 | 30.75 | 32.00 | 37.17 | 44.81 | 51.77 | 49.23 | 46.29 | 45.83 | 38.87 | 36.87 | 36.42 | 40.02 | |||||||||||||
1970 | 36.10 | 33.89 | 35.23 | 34.90 | 40.97 | 49.37 | 49.10 | 46.35 | 42.55 | a | 37.58 | 37.10 | 32.39 | 39.63 | ||||||||||||
1971 | 31.55 | 33.29 | 33.00 | 35.77 | 42.55 | 45.93 | a | 50.42 | 51.68 | 43.87 | 38.65 | 35.27 | 31.84 | 39.48 | ||||||||||||
1972 | 31.42 | 34.55 | 37.84 | 35.60 | 42.48 | 46.77 | 50.29 | 50.23 | 42.00 | 38.16 | 38.10 | 26.23 | 39.47 | |||||||||||||
1973 | 31.00 | 33.64 | 34.47 | a | 36.57 | 42.55 | 47.50 | 48.71 | 46.32 | 46.60 | 39.81 | 37.80 | 36.94 | 40.16 | ||||||||||||
1974 | 27.10 | 32.25 | 35.45 | 37.47 | 41.42 | 46.97 | 50.42 | 49.77 | 45.00 | 36.52 | 38.23 | 35.13 | 39.64 | |||||||||||||
1975 | 35.26 | 33.93 | 34.13 | 34.37 | 41.03 | a | 46.23 | 51.90 | 48.61 | 45.72 | a | 43.48 | 34.57 | 35.39 | 40.39 | |||||||||||
1976 | 33.03 | 30.41 | 31.42 | 36.03 | 40.48 | 42.53 | 49.29 | 51.42 | 48.27 | 39.48 | 39.47 | 29.74 | 39.30 | |||||||||||||
1977 | 26.94 | 33.79 | 33.06 | 36.07 | 40.52 | 46.73 | 47.77 | 53.42 | 47.34 | a | 42.35 | 36.20 | 36.94 | 40.09 | ||||||||||||
1978 | 36.27 | a | 33.92 | p | 38.28 | m | 39.03 | a | 39.93 | a | 48.97 | 49.74 | 50.10 | 46.40 | 40.42 | 30.40 | 28.74 | 41.00 | b | |||||||
1979 | 23.81 | 34.07 | a | 36.90 | a | 39.41 | a | 42.58 | 45.52 | a | 49.21 | c | 50.32 | 49.47 | 45.23 | 33.63 | 34.19 | 40.36 | ||||||||
1980 | 28.71 | 35.34 | 35.26 | 38.74 | c | 41.94 | 46.13 | 48.97 | b | 44.97 | b | 44.77 | 40.00 | 37.28 | a | 34.26 | 39.70 | |||||||||
1981 | 35.35 | 33.89 | a | 34.83 | b | 38.23 | 42.84 | 46.97 | 47.89 | c | 49.71 | 45.39 | b | 39.94 | 38.00 | b | 36.29 | 40.78 | ||||||||
1982 | 30.36 | c | 31.67 | a | 33.87 | a | 32.87 | 38.93 | d | 48.53 | 49.66 | b | 49.00 | a | 45.72 | a | 42.37 | a | 33.30 | 33.58 | 39.15 | |||||
1983 | 33.39 | 37.43 | 38.67 | a | 35.77 | 42.20 | a | 46.11 | b | 51.19 | 51.00 | b | 43.76 | a | 40.45 | b | 38.03 | 30.90 | a | 40.74 | ||||||
1984 | 31.68 | 33.83 | 37.23 | 36.62 | a | 41.69 | b | 44.96 | c | 48.07 | b | 47.93 | d | 43.00 | a | 40.14 | b | 35.74 | c | 31.42 | 39.36 | |||||
1985 | 29.32 | 29.84 | c | 30.55 | b | 39.46 | b | 40.35 | 45.90 | a | 49.67 | a | 47.52 | 44.10 | 38.17 | a | 30.00 | a | 26.33 | a | 37.60 | |||||
1986 | 34.52 | 36.56 | a | 38.10 | 36.83 | 42.57 | a | 50.30 | 48.13 | a | 50.77 | 44.79 | a | 40.52 | d | 38.57 | 32.35 | 41.17 | ||||||||
1987 | 30.07 | a | 32.57 | 35.48 | 37.25 | b | 44.07 | b | 46.75 | b | 49.43 | c | 46.68 | c | 43.69 | a | 37.17 | a | 37.92 | e | 33.26 | d | 39.53 | |||
1988 | 31.90 | b | 32.15 | c | 32.54 | c | 38.12 | d | 40.19 | d | 45.44 | c | 48.45 | 45.67 | a | 42.33 | c | 44.52 | b | 37.89 | c | 32.04 | d | 39.27 | ||
1989 | 32.48 | b | 23.24 | c | 34.19 | d | 40.04 | c | 42.29 | c | 46.13 | 49.14 | c | 48.25 | c | 43.24 | e | 39.07 | d | 35.52 | c | 30.76 | f | 39.42 | a | |
1990 | 34.62 | b | 30.33 | d | 36.53 | a | 40.59 | c | 41.73 | a | 47.50 | 51.65 | 52.43 | a | 48.15 | d | 38.77 | e | 36.13 | g | 24.81 | e | 40.65 | a | ||
1991 | 27.31 | e | 37.04 | b | 32.70 | d | 37.62 | a | 41.00 | c | 45.27 | 50.52 | b | 51.03 | b | 45.25 | b | 39.21 | b | 38.92 | e | 33.87 | 39.98 | |||
1992 | 34.60 | a | 37.31 | 36.48 | b | 41.69 | d | 44.62 | b | 49.60 | 51.79 | b | 49.23 | a | 45.15 | c | 42.55 | b | 37.97 | a | 33.83 | b | 42.07 | |||
1993 | 30.55 | 30.07 | 39.97 | 41.68 | b | 46.57 | c | 49.00 | j | 49.43 | c | 51.16 | 44.86 | a | 41.74 | d | 30.15 | c | 33.34 | b | 39.96 | a | ||||
1994 | 33.28 | f | 33.24 | c | 36.42 | 43.25 | b | 46.79 | c | 46.32 | b | 51.07 | c | 49.23 | a | 48.37 | c | 39.23 | e | 34.23 | d | 35.48 | d | 42.15 | a | |
1995 | 37.12 | e | 37.12 | c | 36.08 | e | 38.90 | a | 45.06 | 49.18 | b | 54.93 | c | 47.21 | b | 49.73 | 40.00 | j | 43.17 | a | 37.33 | a | 43.26 | a | ||
1996 | 35.29 | 34.83 | 36.20 | a | 41.30 | 42.97 | 47.00 | g | 51.46 | g | 49.60 | a | 43.73 | 42.71 | 38.76 | a | 37.67 | a | 40.31 | b | ||||||
1997 | 33.19 | 33.36 | 37.29 | 38.67 | 46.55 | 48.43 | 51.46 | c | 51.74 | 49.50 | b | 42.81 | 39.20 | 31.52 | 41.98 | |||||||||||
1998 | 38.81 | 36.79 | 36.67 | a | 39.70 | 45.19 | 48.90 | 56.80 | f | 49.69 | b | 46.63 | 42.10 | 40.83 | a | 32.26 | 41.60 | a | ||||||||
1999 | 35.10 | 35.18 | 34.90 | 36.63 | 41.32 | 45.74 | g | 48.46 | c | 53.19 | 42.33 | 38.23 | 40.67 | 35.71 | 40.16 | a | ||||||||||
2000 | 33.65 | 37.69 | 33.87 | 39.90 | 45.48 | 48.24 | a | 50.48 | f | 46.61 | c | 45.62 | a | 40.50 | e | 33.89 | c | 34.78 | d | 40.02 | a | |||||
2001 | 31.89 | d | 30.79 | 36.19 | d | 36.86 | a | 42.41 | b | 46.37 | 50.13 | a | 51.97 | a | 45.65 | g | 40.83 | a | 39.86 | b | 35.03 | a | 40.21 | a | ||
2002 | 34.56 | d | 32.92 | c | 33.75 | c | 37.85 | c | 38.65 | h | 45.70 | c | 48.89 | l | 46.86 | c | 46.43 | b | 37.80 | a | 38.79 | b | 37.63 | a | 39.23 | b |
2003 | 39.04 | d | 34.15 | b | 40.89 | d | 40.11 | b | 42.57 | c | 48.18 | b | 51.81 | d | 51.11 | c | 47.70 | c | 45.93 | c | 37.54 | b | 37.77 | a | 43.07 | |
2004 | 36.57 | a | 37.56 | b | 38.06 | 38.27 | d | 37.77 | a | 48.59 | c | 51.53 | a | 52.68 | c | 49.04 | c | 43.24 | b | 36.21 | a | 36.39 | 42.16 | |||
2005 | 33.97 | b | 30.20 | h | 38.54 | g | 39.92 | e | 47.36 | c | ----- | z | 52.71 | 49.43 | a | 43.53 | 44.90 | b | 37.63 | 32.05 | i | 43.68 | d | |||
2006 | 38.19 | e | 30.12 | c | 34.86 | b | 38.57 | 43.07 | d | 51.10 | a | 50.50 | c | 46.25 | g | 44.04 | e | 37.81 | d | 38.00 | d | 33.14 | b | 39.95 | a | |
2007 | 28.34 | b | 33.82 | 37.77 | 37.73 | 41.52 | 46.20 | 53.29 | 50.03 | 44.23 | 40.81 | 35.20 | 34.16 | 40.26 | ||||||||||||
2008 | 30.19 | 32.00 | 33.06 | 34.70 | 44.16 | 44.30 | 48.97 | 50.84 | 43.87 | 40.74 | 40.50 | 30.55 | 39.49 | |||||||||||||
2009 | 31.23 | 31.89 | 33.58 | 35.53 | 42.26 | 49.77 | 51.55 | 50.10 | 47.13 | 40.81 | 35.63 | 28.19 | 39.81 | |||||||||||||
2010 | 38.29 | 36.11 | 34.45 | 36.10 | 40.57 | a | 47.50 | 48.48 | 49.48 | 49.00 | 43.10 | 38.10 | 36.55 | 41.48 | ||||||||||||
2011 | 33.71 | 31.04 | 36.45 | 35.73 | 38.92 | g | 46.58 | d | 49.77 | 50.68 | 48.83 | 44.90 | 36.03 | 29.43 | a | 40.29 | a | |||||||||
2012 | 32.13 | 32.00 | 32.13 | 39.47 | 40.90 | 45.63 | 50.32 | 48.87 | 43.70 | 40.29 | 39.23 | 35.06 | 39.98 | |||||||||||||
2013 | 29.74 | 33.04 | d | 35.00 | 38.33 | 42.77 | 47.90 | 50.12 | n | 52.54 | g | 50.20 | 38.00 | 36.63 | 26.28 | b | 37.79 | b | ||||||||
2014 | 31.58 | 34.89 | 36.74 | 37.30 | 44.00 | b | 45.63 | 51.35 | 51.84 | 46.57 | 46.23 | 38.47 | 37.61 | 41.85 | ||||||||||||
2015 | 35.03 | 37.04 | 37.19 | 35.53 | 44.45 | 49.17 | 51.84 | 50.61 | 44.77 | 44.39 | 35.53 | 36.55 | 41.84 | |||||||||||||
2016 | 33.94 | 36.97 | 37.61 | 41.63 | 44.71 | 47.15 | c | 50.00 | 48.74 | 44.40 | 46.45 | 42.07 | 30.61 | 42.02 | ||||||||||||
2017 | 28.77 | 35.00 | 38.39 | 38.27 | 43.42 | 48.90 | 49.58 | 50.84 | 49.03 | 40.13 | h | 37.93 | 31.06 | 41.02 | a | |||||||||||
2018 | 36.55 | 31.50 | 32.90 | 38.73 | 45.68 | 47.00 | 50.06 | 50.71 | 42.75 | j | 39.48 | 36.77 | 34.23 | 40.33 | a | |||||||||||
2019 | 32.81 | 30.96 | 30.58 | 41.07 | 44.77 | 47.03 | 50.81 | 51.94 | 50.43 | 36.97 | 34.30 | 34.32 | 40.50 | |||||||||||||
2020 | 38.42 | 31.17 | 32.90 | 39.23 | 44.71 | 49.83 | 50.90 | 49.10 | 49.32 | h | 41.60 | a | 34.43 | 33.87 | 40.56 | a | ||||||||||
2021 | 35.06 | 34.86 | 32.32 | 34.40 | 42.00 | 50.90 | 51.55 | 50.71 | 45.80 | 41.52 | 39.03 | 35.16 | 41.11 | |||||||||||||
2022 | 33.10 | 31.39 | 37.32 | 35.53 | 42.48 | 48.43 | 53.10 | 51.97 | 47.80 | 43.74 | 31.93 | 33.58 | 40.87 | |||||||||||||
2023 | 31.90 | 29.14 | 32.03 | 38.23 | 44.90 | 46.50 | d | 50.16 | 53.32 | 47.07 | a | 44.06 | 37.33 | 38.52 | 41.10 | |||||||||||
2024 | 41.45 | k | 37.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.00 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.75 | 33.55 | 34.95 | 37.88 | 42.61 | 47.39 | 50.06 | 49.75 | 46.01 | 41.24 | 36.93 | 33.66 | 40.42 | |||||||||||||
S.D. | 3.40 | 2.96 | 2.35 | 2.08 | 2.08 | 1.87 | 1.56 | 1.98 | 2.19 | 2.48 | 2.96 | 3.13 | 1.06 | |||||||||||||
SKEW | -0.57 | -0.19 | 0.08 | 0.08 | 0.21 | 0.28 | 0.43 | -0.34 | 0.22 | 0.15 | -0.68 | -0.57 | 0.23 | |||||||||||||
MAX | 39.04 | 41.11 | 40.89 | 43.25 | 47.36 | 51.83 | 54.93 | 53.42 | 50.63 | 46.45 | 43.17 | 41.16 | 43.07 | |||||||||||||
MIN | 23.81 | 23.24 | 30.55 | 32.87 | 37.77 | 42.53 | 46.77 | 44.97 | 42.00 | 36.52 | 27.83 | 24.81 | 37.60 | |||||||||||||
YRS | 72 | 72 | 71 | 73 | 72 | 70 | 69 | 72 | 71 | 72 | 73 | 72 | 54 |