YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.29 | 54.83 | 44.87 | 29.57 | 28.42 | 43.40 | g | |||||
1949 | 20.97 | 23.86 | 31.06 | 41.10 | 45.06 | 52.53 | 59.48 | 56.16 | 55.90 | 40.90 | 39.83 | 26.13 | 41.08 | |||||||||||||
1950 | 25.55 | 32.79 | 32.74 | 40.50 | 43.39 | 51.27 | 60.23 | 57.26 | 50.53 | 48.77 | 37.37 | 33.55 | 42.83 | |||||||||||||
1951 | 26.61 | 29.11 | 30.61 | 37.53 | 45.48 | 50.43 | 61.35 | 58.39 | 53.00 | 43.23 | 33.23 | 27.42 | 41.37 | |||||||||||||
1952 | 27.39 | 28.10 | 28.06 | 40.27 | 46.90 | 47.50 | 55.52 | 57.55 | 50.90 | 38.57 | a | 26.30 | 23.58 | 39.22 | ||||||||||||
1953 | 25.65 | 21.00 | 28.48 | 31.93 | 35.13 | 47.23 | 60.68 | 55.06 | 48.19 | c | 37.32 | 30.17 | 19.42 | 36.69 | ||||||||||||
1954 | 22.84 | 26.46 | 29.26 | 35.53 | 41.06 | 48.20 | 60.39 | 55.60 | a | 50.13 | 38.19 | 27.47 | 19.87 | 37.92 | ||||||||||||
1955 | 20.13 | 18.54 | 26.19 | 31.34 | a | 42.94 | 45.30 | 53.94 | 57.13 | a | 44.93 | 38.84 | 27.50 | 24.68 | 35.95 | |||||||||||
1956 | 24.26 | 20.24 | 23.97 | a | 31.68 | e | 38.68 | 48.43 | 52.10 | 46.55 | 48.28 | a | 36.87 | 22.93 | 21.06 | 34.59 | ||||||||||
1957 | 30.39 | 33.96 | 32.97 | 33.57 | 38.90 | 50.07 | 58.71 | 57.00 | 45.90 | 42.52 | 28.58 | d | 25.77 | 39.86 | ||||||||||||
1958 | 22.26 | 29.64 | 29.52 | 33.07 | 43.33 | a | 50.00 | 56.97 | 59.26 | 52.67 | 41.52 | 28.07 | 23.61 | 39.16 | ||||||||||||
1959 | 22.19 | 24.18 | 26.39 | 36.00 | 38.03 | 53.80 | 60.35 | 57.71 | 47.77 | 38.42 | 29.37 | 27.70 | a | 38.49 | ||||||||||||
1960 | 19.84 | 23.07 | 31.68 | 34.73 | 39.74 | 50.50 | 56.42 | 56.35 | 50.27 | 38.48 | 28.67 | 22.26 | 37.67 | |||||||||||||
1961 | 24.32 | 25.70 | a | 28.42 | 35.07 | 38.23 | 51.07 | 57.45 | 58.13 | 47.00 | 36.77 | 29.87 | 25.03 | 38.09 | ||||||||||||
1962 | 24.06 | 27.61 | 24.81 | 36.17 | 39.06 | 47.37 | 57.39 | 56.97 | 52.03 | 40.35 | 33.47 | 27.13 | 38.87 | |||||||||||||
1963 | 20.81 | 29.21 | 27.68 | 32.23 | 43.65 | 47.93 | 61.13 | 59.19 | 52.37 | 42.84 | 34.13 | 22.00 | 39.43 | |||||||||||||
1964 | 19.13 | a | 18.31 | 25.74 | 33.10 | 42.84 | 49.50 | 61.42 | 58.19 | 49.83 | 42.06 | 26.43 | 25.42 | 37.67 | ||||||||||||
1965 | 27.55 | 24.21 | 27.71 | 35.30 | 39.35 | 45.07 | 58.97 | 55.00 | 47.30 | 39.68 | 34.60 | 26.74 | 38.46 | |||||||||||||
1966 | 22.23 | 22.18 | 29.29 | 35.67 | 45.68 | 51.97 | 61.77 | 58.35 | 52.83 | 39.29 | 31.50 | 23.16 | 39.49 | |||||||||||||
1967 | 22.23 | 24.70 | a | 29.55 | 31.07 | 39.19 | 48.07 | 59.74 | 56.57 | a | 50.10 | 39.00 | 31.50 | 19.84 | 37.63 | |||||||||||
1968 | 22.74 | 31.69 | 29.90 | 34.17 | 40.19 | 47.47 | 56.32 | 53.94 | 45.03 | 39.16 | 30.57 | 18.74 | 37.49 | |||||||||||||
1969 | 29.71 | 24.18 | 24.13 | 33.07 | 40.32 | 46.37 | 58.90 | 60.29 | 50.83 | 37.42 | 31.27 | 25.68 | 38.51 | |||||||||||||
1970 | 20.45 | 27.64 | 27.52 | 28.93 | 39.32 | 47.60 | 58.10 | 60.29 | 46.40 | 34.55 | 28.67 | 24.71 | 37.01 | |||||||||||||
1971 | 19.94 | 24.43 | 27.26 | 31.30 | 37.94 | 46.60 | 59.35 | 58.23 | 46.93 | 37.81 | 28.17 | 23.74 | 36.81 | |||||||||||||
1972 | 20.32 | 22.93 | 32.35 | 33.83 | 39.94 | 51.53 | 59.48 | 56.45 | 49.00 | 43.32 | 27.73 | 24.10 | 38.42 | |||||||||||||
1973 | 22.42 | 28.25 | 28.35 | 31.70 | 42.68 | 49.10 | 55.32 | 56.19 | ----- | z | 36.61 | 29.50 | 23.61 | 36.70 | a | |||||||||||
1974 | 25.68 | 20.82 | 31.65 | 33.40 | 40.84 | 51.57 | 57.97 | a | 53.80 | a | 48.50 | 43.52 | 29.40 | 20.23 | 38.11 | |||||||||||
1975 | 22.87 | 24.93 | 28.55 | 28.70 | 37.71 | 45.27 | 58.58 | 54.81 | 49.47 | 38.42 | 27.10 | 25.13 | 36.79 | |||||||||||||
1976 | 21.81 | 28.79 | 27.77 | 31.33 | 42.58 | 47.13 | 58.29 | 52.97 | 47.60 | 38.13 | 27.73 | 20.61 | 37.06 | |||||||||||||
1977 | 24.48 | 24.82 | 24.84 | 33.53 | 37.84 | 50.63 | 59.55 | 58.13 | 52.13 | 41.29 | 31.23 | 28.19 | 38.89 | |||||||||||||
1978 | 27.74 | 28.79 | 34.42 | 35.13 | 39.55 | 49.37 | 56.65 | 55.71 | 47.10 | 42.29 | 32.63 | 22.19 | 39.30 | |||||||||||||
1979 | 22.77 | 23.07 | 29.71 | 32.70 | 44.10 | 51.43 | 52.74 | 53.74 | 52.23 | 40.55 | 27.47 | 24.77 | 37.94 | |||||||||||||
1980 | 30.26 | 30.28 | 30.32 | 34.70 | 38.61 | 46.77 | 58.13 | 57.03 | 49.27 | 39.03 | 29.87 | 28.32 | 39.38 | |||||||||||||
1981 | 27.94 | 25.93 | 30.45 | 38.93 | 43.16 | 53.63 | 59.16 | 58.81 | 51.17 | 39.77 | 31.50 | 26.32 | 40.56 | |||||||||||||
1982 | 25.90 | 29.79 | 31.45 | 34.67 | 41.74 | 46.33 | 57.58 | 59.52 | 52.77 | 36.48 | 33.10 | 26.19 | 39.63 | |||||||||||||
1983 | 25.35 | 30.21 | 31.55 | 31.83 | 39.74 | 46.80 | 58.23 | 58.19 | 55.93 | 44.48 | 31.33 | 28.26 | 40.16 | |||||||||||||
1984 | 26.03 | 23.14 | 29.16 | 33.87 | 45.39 | 50.57 | 59.19 | 59.10 | 53.43 | 38.39 | 28.40 | 28.61 | 39.61 | |||||||||||||
1985 | 26.42 | 24.36 | 31.35 | 38.87 | 43.23 | 51.67 | 61.65 | 56.70 | a | 46.79 | a | 42.00 | 31.19 | c | 25.13 | 39.95 | ||||||||||
1986 | 26.90 | a | 29.32 | c | 34.00 | a | 39.03 | 43.03 | 52.57 | 58.06 | 60.00 | 47.40 | 38.45 | b | 29.18 | b | 26.58 | e | 40.38 | |||||||
1987 | 22.20 | k | 25.90 | g | 26.79 | c | 37.25 | b | 44.06 | 50.28 | a | 54.48 | 56.61 | 49.47 | 43.90 | 29.46 | b | 23.50 | e | 41.58 | b | |||||
1988 | 22.42 | e | 26.72 | d | 27.50 | a | 35.47 | 40.77 | 52.43 | 57.84 | 56.74 | 45.33 | 41.55 | 26.34 | a | 19.06 | 37.68 | |||||||||
1989 | 20.29 | c | 24.04 | d | 28.23 | a | 34.77 | 41.13 | a | 48.97 | 58.45 | 54.87 | 49.67 | 38.23 | a | 27.71 | b | 20.89 | d | 37.27 | ||||||
1990 | 21.58 | g | 24.38 | g | 32.10 | b | 39.20 | 40.32 | 51.33 | 59.26 | 54.13 | 53.10 | 38.37 | a | 29.56 | c | 18.28 | f | 44.15 | c | ||||||
1991 | 23.79 | c | 26.75 | h | 27.26 | d | 31.45 | a | 39.26 | 45.70 | 57.00 | 58.16 | 51.62 | a | 42.67 | a | 29.93 | a | 26.35 | e | 39.38 | a | ||||
1992 | 23.93 | d | 30.12 | c | 32.53 | a | 37.69 | a | 46.06 | 48.20 | 56.39 | 57.35 | 49.67 | 40.57 | a | 25.23 | d | 25.12 | g | 40.70 | a | |||||
1993 | 29.77 | i | 28.92 | d | 31.48 | b | 34.86 | b | 44.26 | 48.90 | 54.74 | 58.42 | 48.23 | 40.35 | 26.15 | d | 22.52 | f | 41.63 | b | ||||||
1994 | 22.29 | c | 24.39 | e | 31.59 | b | 35.41 | a | 40.10 | 51.40 | 56.58 | 60.03 | 52.23 | 37.68 | 26.33 | c | 26.77 | e | 38.73 | |||||||
1995 | 27.40 | f | 31.12 | d | 31.28 | b | 33.87 | 39.06 | 47.27 | 55.52 | 60.35 | 52.90 | 38.90 | 34.18 | b | 25.28 | f | 42.45 | b | |||||||
1996 | 21.76 | f | 31.36 | d | 29.63 | d | 36.73 | 45.03 | 52.80 | 60.73 | a | 58.68 | 50.31 | a | 40.10 | 29.63 | c | 24.81 | d | 41.80 | a | |||||
1997 | 26.15 | e | 24.81 | g | 31.48 | b | 35.00 | e | 46.00 | c | 49.00 | 55.00 | f | 58.76 | f | 56.35 | d | 37.23 | e | 30.29 | f | 23.48 | h | 40.17 | e | |
1998 | 25.96 | c | 25.30 | e | 30.84 | f | 31.19 | c | 37.08 | f | 46.50 | f | 60.23 | e | 59.15 | d | 52.21 | b | 38.77 | i | 30.28 | e | 25.42 | e | 38.72 | d |
1999 | 24.42 | e | 26.39 | j | 28.85 | e | 30.24 | i | 40.69 | e | 49.59 | h | 60.15 | d | 58.44 | f | 50.29 | f | 39.04 | e | 30.09 | h | 22.93 | a | 36.01 | f |
2000 | 25.43 | a | 29.45 | 30.87 | 38.53 | 45.03 | 54.17 | 58.77 | 60.23 | 53.23 | 41.16 | 26.74 | c | 26.26 | 40.82 | |||||||||||
2001 | 24.94 | 26.36 | 32.32 | 37.20 | 46.65 | 53.30 | 60.42 | 59.23 | a | 53.13 | 44.03 | 33.80 | 25.03 | 41.37 | ||||||||||||
2002 | 24.68 | 24.64 | 29.23 | 38.83 | 41.58 | 52.07 | 62.55 | 58.45 | 53.20 | 40.48 | 31.87 | 25.63 | a | 40.27 | ||||||||||||
2003 | 29.74 | 29.93 | 31.52 | 35.97 | 45.42 | 53.57 | b | 62.03 | 61.26 | 52.38 | a | 44.68 | 32.20 | 24.42 | 41.93 | |||||||||||
2004 | 26.83 | a | 25.61 | a | 37.17 | a | 38.13 | 44.32 | 50.80 | 56.19 | e | 55.45 | 50.03 | 41.52 | 33.10 | 27.47 | a | 40.55 | ||||||||
2005 | 30.45 | 33.64 | 32.55 | 37.37 | 45.27 | a | 51.37 | 60.16 | 58.77 | a | 52.63 | c | 43.94 | 32.63 | 26.26 | 42.09 | ||||||||||
2006 | 26.61 | 27.57 | 29.94 | 38.43 | 46.23 | 56.70 | 60.97 | 59.97 | a | 49.76 | a | 41.43 | a | 32.57 | 23.66 | b | 41.15 | |||||||||
2007 | 24.27 | a | 28.96 | a | 33.67 | a | 38.50 | 46.87 | 54.04 | b | 62.07 | a | 61.65 | 52.61 | b | 41.20 | a | 34.72 | a | 27.29 | n | 43.50 | a | |||
2008 | ----- | z | 31.31 | m | 31.81 | 35.93 | 41.94 | 53.27 | 61.32 | 61.00 | 53.40 | 42.58 | 34.37 | 28.55 | 44.42 | b | ||||||||||
2009 | 28.78 | d | 28.25 | 32.55 | 36.43 | 48.90 | 47.90 | t | ----- | z | 56.89 | v | 52.66 | a | 40.89 | d | 30.45 | a | 23.32 | 35.80 | c | |||||
2010 | 25.23 | a | 28.19 | a | 29.26 | 35.61 | b | 41.63 | a | 50.20 | 63.10 | 60.87 | 51.47 | 44.32 | 28.43 | 29.10 | 40.62 | |||||||||
2011 | 22.13 | 23.04 | 30.52 | 38.63 | 40.68 | 49.00 | 60.32 | 61.65 | 53.40 | 40.94 | 29.93 | 25.29 | 39.63 | |||||||||||||
2012 | 24.74 | 25.76 | 27.58 | 37.43 | 43.68 | 52.37 | 61.97 | 61.61 | 52.77 | 39.81 | 31.30 | 25.19 | 40.35 | |||||||||||||
2013 | 21.77 | 23.71 | 31.68 | 36.73 | 43.16 | 52.17 | 62.48 | 60.58 | 53.20 | 36.32 | 33.07 | 24.39 | 39.94 | |||||||||||||
2014 | 24.90 | 27.68 | 32.77 | 36.47 | 43.26 | 52.07 | 61.48 | 57.97 | 55.83 | 43.71 | 30.13 | 28.94 | 41.27 | |||||||||||||
2015 | 27.06 | 30.71 | 35.00 | 36.10 | 41.77 | 55.97 | 60.42 | 60.97 | 55.33 | 46.48 | 28.47 | 22.84 | 41.76 | |||||||||||||
2016 | 24.32 | 27.24 | 31.55 | 37.83 | 43.35 | 55.53 | 60.42 | 59.00 | 53.17 | 43.45 | 35.03 | 29.23 | 41.68 | |||||||||||||
2017 | 29.13 | 31.61 | 33.94 | 37.23 | 44.32 | 53.53 | 61.90 | 58.81 | 50.70 | 41.55 | 35.20 | 26.19 | 42.01 | |||||||||||||
2018 | 25.94 | 26.50 | 30.61 | 37.40 | 43.52 | 51.80 | 63.74 | 60.90 | 53.30 | 44.97 | 28.87 | 26.06 | 41.13 | |||||||||||||
2019 | 26.71 | 25.68 | 31.58 | 38.30 | 40.29 | 49.70 | 59.56 | d | 60.19 | 54.33 | 37.03 | 31.37 | 27.42 | 40.18 | ||||||||||||
2020 | 25.58 | 27.14 | a | 33.84 | 37.27 | 45.29 | 52.50 | 60.48 | 61.48 | 51.03 | 40.32 | 33.20 | 23.87 | 41.00 | ||||||||||||
2021 | 23.71 | 25.68 | 29.61 | 37.73 | 42.00 | 55.13 | 63.87 | 60.42 | 54.70 | 39.77 | 32.73 | 29.90 | 41.27 | |||||||||||||
2022 | 25.39 | 24.50 | 30.39 | 35.87 | 44.03 | 55.50 | 63.35 | 61.16 | 56.33 | 40.94 | 26.17 | 27.03 | 40.89 | |||||||||||||
2023 | 24.81 | 24.29 | 30.03 | 35.43 | 43.55 | 46.97 | 62.48 | 62.81 | 51.90 | 41.94 | 33.97 | 26.65 | 40.40 | |||||||||||||
2024 | 24.26 | 29.24 | 30.48 | 34.95 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.99 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.64 | 26.62 | 30.11 | 35.43 | 42.22 | 50.37 | 59.16 | 58.06 | 51.06 | 40.56 | 30.43 | 25.09 | 39.42 | |||||||||||||
S.D. | 2.76 | 3.40 | 2.60 | 2.75 | 2.79 | 2.84 | 2.57 | 2.63 | 2.85 | 2.70 | 3.02 | 2.85 | 1.75 | |||||||||||||
SKEW | 0.13 | -0.13 | -0.16 | -0.28 | -0.04 | 0.07 | -0.50 | -1.23 | -0.26 | 0.38 | 0.34 | -0.12 | -0.36 | |||||||||||||
MAX | 30.45 | 33.96 | 37.17 | 41.10 | 48.90 | 56.70 | 63.87 | 62.81 | 56.35 | 48.77 | 39.83 | 33.55 | 42.83 | |||||||||||||
MIN | 19.13 | 18.31 | 23.97 | 28.70 | 35.13 | 45.07 | 52.10 | 46.55 | 44.93 | 34.55 | 22.93 | 18.74 | 34.59 | |||||||||||||
YRS | 70 | 70 | 75 | 74 | 74 | 72 | 73 | 73 | 74 | 75 | 74 | 70 | 61 |