YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.50 | 43.94 | 38.32 | 30.71 | 41.62 | h | ||||
1943 | 27.53 | a | 33.39 | 32.63 | a | 46.40 | 49.00 | 59.55 | 64.48 | 64.55 | 55.22 | 44.71 | 35.80 | 26.90 | b | 45.01 | ||||||||||
1944 | 23.77 | 26.00 | 31.27 | 36.33 | a | 48.74 | 57.81 | a | 62.83 | a | 63.34 | 56.18 | 47.85 | 34.90 | 26.27 | 42.94 | ||||||||||
1945 | 26.19 | 29.96 | a | 35.63 | 39.18 | 52.20 | f | 57.18 | 63.68 | 64.37 | a | 56.28 | 48.83 | a | 37.03 | 26.90 | 44.11 | a | ||||||||
1946 | 24.73 | 31.26 | a | 36.02 | 48.22 | 48.40 | 61.73 | 64.00 | 62.29 | 56.48 | a | 45.34 | 32.59 | a | 32.58 | k | 46.46 | a | ||||||||
1947 | 25.95 | ----- | z | 33.21 | 40.70 | 50.82 | a | 57.78 | 63.47 | 63.75 | g | 57.87 | 48.34 | 30.52 | 25.55 | a | 43.42 | b | ||||||||
1948 | 23.22 | a | 25.11 | a | 26.82 | a | 46.52 | a | 51.61 | 58.83 | 63.47 | 62.65 | 58.37 | 46.16 | 30.79 | a | 28.39 | 43.49 | ||||||||
1949 | 24.39 | q | ----- | z | 35.02 | a | 41.37 | 50.89 | 57.35 | 62.90 | 61.00 | 56.77 | 45.95 | 42.17 | 26.60 | 48.00 | b | |||||||||
1950 | 29.44 | 32.64 | 33.50 | u | 44.17 | 49.84 | 59.98 | 60.06 | 59.45 | a | 54.67 | 53.02 | 38.70 | 34.81 | 46.98 | a | ||||||||||
1951 | 25.92 | 32.20 | 33.44 | 41.17 | 52.00 | 57.74 | a | 65.75 | c | 63.85 | a | 57.50 | 46.16 | 32.65 | 29.08 | 44.79 | ||||||||||
1952 | 30.31 | 27.55 | 29.74 | 42.45 | 50.27 | 63.88 | 62.60 | u | 64.55 | i | 57.07 | 48.61 | 30.60 | 26.53 | 40.70 | b | ||||||||||
1953 | 33.50 | 27.34 | 37.47 | 40.77 | 47.98 | ----- | z | ----- | z | 62.92 | a | 58.57 | 47.34 | 37.63 | 25.27 | 41.88 | b | |||||||||
1954 | 34.31 | r | 37.11 | 33.24 | 48.52 | 50.45 | 60.40 | 65.15 | 62.21 | 58.98 | a | 49.19 | 39.23 | 31.39 | 48.72 | a | ||||||||||
1955 | 24.32 | 22.55 | 33.95 | 41.95 | 49.23 | 55.67 | 62.29 | 61.87 | 57.22 | 49.35 | a | 37.02 | 33.29 | 44.06 | ||||||||||||
1956 | 31.77 | 25.59 | a | 35.91 | i | 41.18 | 55.63 | 61.33 | c | 62.86 | x | 60.18 | 57.85 | 48.16 | 31.83 | a | ----- | z | 45.95 | c | ||||||
1957 | ----- | z | ----- | z | 36.42 | y | 39.73 | 46.73 | 58.35 | 64.05 | a | 62.32 | 54.70 | 46.37 | 30.22 | 31.85 | 48.26 | c | ||||||||
1958 | 25.53 | 31.70 | 28.63 | 39.15 | 52.23 | 60.73 | 62.48 | 62.81 | 56.77 | 46.90 | 37.93 | 32.94 | 44.82 | |||||||||||||
1959 | 25.27 | 26.23 | 31.90 | 42.09 | a | 51.48 | b | 59.63 | 61.27 | 62.76 | 55.87 | 45.34 | 35.52 | 30.68 | a | 44.00 | ||||||||||
1960 | 22.21 | 20.03 | 34.31 | 44.72 | 50.45 | 60.70 | 62.30 | a | 63.05 | 56.95 | 46.31 | 36.90 | 26.68 | 43.72 | ||||||||||||
1961 | 26.31 | 29.41 | 34.84 | 41.23 | 52.94 | 59.53 | 62.58 | 61.90 | 53.98 | 46.52 | a | 33.48 | a | 25.33 | a | 44.00 | ||||||||||
1962 | 22.48 | 32.86 | 30.65 | 45.15 | 52.61 | 57.17 | 61.94 | 63.19 | 56.45 | 49.23 | 36.98 | 30.78 | a | 44.96 | ||||||||||||
1963 | 21.02 | 29.93 | 33.19 | 44.90 | 52.84 | 59.15 | 65.24 | 62.37 | 57.48 | i | 50.69 | e | 37.75 | 26.64 | i | 45.71 | b | |||||||||
1964 | 21.20 | a | 17.27 | c | 28.24 | 40.92 | 51.97 | ----- | z | 65.44 | 62.26 | 56.72 | 47.55 | 35.48 | 27.38 | g | 42.70 | b | ||||||||
1965 | 29.64 | b | 25.62 | 27.06 | 44.36 | a | 49.13 | a | 56.33 | 63.24 | 60.53 | 54.09 | a | 48.10 | 39.98 | 31.68 | k | 45.28 | a | |||||||
1966 | 21.81 | b | 22.07 | 35.95 | 43.20 | 52.79 | 59.62 | 66.26 | 60.89 | 56.58 | 45.73 | 39.65 | 29.88 | e | 44.54 | |||||||||||
1967 | 28.19 | b | 27.82 | 40.48 | 45.50 | 49.69 | 58.87 | 63.65 | 58.53 | o | 54.63 | 48.21 | 36.58 | 22.15 | 43.25 | a | ||||||||||
1968 | 25.60 | 28.50 | 32.68 | a | 39.00 | 49.16 | 60.78 | 62.27 | 59.46 | c | 54.35 | 47.82 | 33.33 | 27.00 | 43.33 | |||||||||||
1969 | 32.10 | 29.43 | 26.08 | 44.23 | 52.08 | 56.12 | 64.40 | 64.35 | 56.67 | 42.08 | 34.35 | 29.27 | 44.26 | |||||||||||||
1970 | 26.35 | 32.27 | 30.53 | 39.27 | 52.06 | 58.12 | 64.69 | 64.02 | 54.90 | 41.08 | 34.70 | 30.06 | 44.00 | |||||||||||||
1971 | 27.87 | 27.05 | 34.50 | 42.00 | 48.86 | b | 59.38 | 63.10 | 60.29 | 53.93 | 44.65 | 35.37 | 25.23 | 43.52 | ||||||||||||
1972 | 28.29 | 31.62 | 39.34 | 44.95 | 50.98 | 60.63 | 62.26 | 60.53 | 55.65 | 46.74 | 27.33 | 25.53 | 44.49 | |||||||||||||
1973 | 24.26 | 27.02 | 31.23 | 33.97 | 48.90 | 57.83 | 61.79 | 61.03 | a | 52.90 | 47.11 | 37.52 | 26.69 | 42.52 | ||||||||||||
1974 | 23.85 | 26.86 | 39.69 | 41.10 | a | 54.92 | 59.67 | 64.08 | 59.84 | 53.05 | 48.06 | 35.12 | 23.97 | 44.18 | ||||||||||||
1975 | 23.34 | 25.36 | 33.32 | 39.87 | 48.50 | 58.42 | 62.11 | 62.43 | a | 53.95 | 47.82 | 33.38 | 29.77 | 43.19 | ||||||||||||
1976 | 24.53 | 34.47 | 33.82 | a | 43.45 | 49.20 | a | 58.58 | 63.63 | 60.81 | e | 55.87 | 42.00 | 32.32 | 26.95 | 43.80 | ||||||||||
1977 | 24.84 | 29.71 | 31.15 | 42.48 | 52.40 | 61.73 | 64.36 | b | 63.69 | b | 57.42 | 48.15 | 36.87 | 33.15 | 45.50 | |||||||||||
1978 | 26.42 | 27.70 | 36.47 | 45.37 | 49.84 | 61.03 | 65.16 | 61.65 | 56.40 | 47.47 | 35.23 | 23.15 | a | 44.66 | ||||||||||||
1979 | 18.35 | 26.07 | 33.66 | 42.58 | 49.08 | 57.78 | 63.37 | 60.34 | 56.37 | 48.69 | 29.12 | 30.90 | 43.03 | |||||||||||||
1980 | 27.06 | 31.33 | 32.19 | 37.59 | c | 48.61 | 62.33 | 66.84 | 64.32 | 58.20 | 44.32 | a | 34.23 | 35.90 | 45.24 | |||||||||||
1981 | 30.65 | 30.68 | 34.55 | 47.75 | 49.76 | 62.58 | 63.74 | 59.17 | b | 55.27 | 46.52 | a | 36.91 | b | ----- | z | 47.05 | a | ||||||||
1982 | 27.88 | c | 28.03 | j | 33.28 | a | 39.70 | e | 48.79 | b | 55.86 | i | 63.22 | h | 62.07 | a | 54.00 | f | 42.94 | d | 34.03 | a | 24.45 | b | 39.14 | d |
1983 | 27.56 | e | 25.56 | a | 29.96 | d | 35.21 | b | 46.53 | a | 55.00 | 63.96 | d | 63.98 | a | 55.68 | b | 44.78 | a | 34.20 | b | 19.24 | b | 41.81 | ||
1984 | 20.33 | a | 24.23 | c | 27.28 | b | 36.18 | b | 52.58 | 58.74 | a | 62.39 | d | 60.40 | a | 54.72 | a | 38.10 | b | 31.60 | 24.38 | a | 40.91 | |||
1985 | 18.00 | k | 19.20 | 34.31 | 43.95 | a | 51.74 | l | 60.00 | a | 63.31 | d | 59.43 | c | 51.52 | 46.37 | a | 35.00 | a | 26.58 | 43.97 | b | ||||
1986 | 31.33 | a | 30.19 | a | 38.85 | ----- | z | ----- | z | 58.72 | a | 63.13 | a | 62.17 | a | 55.86 | a | 44.91 | c | 32.18 | b | 21.62 | a | 43.90 | b | |
1987 | 15.63 | e | 24.47 | m | ----- | z | 38.67 | d | 49.37 | 57.63 | 63.63 | 58.83 | a | 51.82 | 47.29 | 34.22 | 24.28 | b | 44.14 | b | ||||||
1988 | 20.82 | 28.19 | 30.11 | 42.47 | 48.76 | 60.77 | 64.15 | 63.20 | a | 53.53 | 49.16 | 34.38 | 27.68 | 43.60 | ||||||||||||
1989 | 26.44 | 24.71 | 39.60 | a | 44.40 | 53.87 | 56.70 | 63.97 | 60.71 | 55.22 | 44.95 | 37.38 | j | 25.12 | a | 45.06 | a | |||||||||
1990 | 24.72 | a | 25.95 | 34.15 | 42.32 | 48.00 | a | 62.55 | 61.15 | 60.84 | 57.28 | c | 44.94 | 38.00 | 24.02 | f | 45.44 | a | ||||||||
1991 | 23.02 | a | 29.86 | 33.28 | a | 40.10 | 51.61 | 57.70 | 61.17 | b | 60.26 | 52.68 | 45.93 | a | 29.53 | 25.45 | a | 42.55 | ||||||||
1992 | 23.31 | 27.47 | 35.13 | 45.20 | 49.97 | 55.47 | 60.74 | 59.44 | 55.13 | 47.23 | 29.27 | 24.81 | d | 42.76 | ||||||||||||
1993 | 25.95 | c | 26.52 | d | 33.71 | c | 40.90 | a | 49.26 | b | 57.43 | c | 62.98 | 59.23 | 52.93 | a | 42.59 | b | 31.70 | e | 25.79 | 42.41 | ||||
1994 | 26.41 | b | 24.52 | b | 34.52 | b | 40.93 | a | 51.34 | b | 61.81 | a | 62.13 | 62.10 | b | 55.52 | c | 44.29 | c | 32.77 | 30.32 | a | 43.89 | |||
1995 | 26.24 | h | 32.59 | 35.70 | c | 37.61 | b | 45.23 | 54.93 | a | 60.88 | a | 63.79 | 54.50 | a | 45.52 | a | 38.35 | c | 28.15 | d | 45.20 | a | |||
1996 | 24.63 | d | 31.09 | a | 32.05 | c | 41.68 | e | 56.05 | a | 59.23 | 62.37 | a | 60.97 | a | 53.36 | e | 43.88 | e | 36.25 | 28.54 | c | 44.17 | |||
1997 | 22.43 | d | 24.33 | b | 35.14 | c | 37.64 | e | 49.32 | a | 58.33 | a | 62.56 | 61.80 | a | 58.17 | d | 45.02 | d | 30.94 | f | 25.61 | d | 43.67 | a | |
1998 | 26.35 | 26.28 | c | 32.12 | b | 37.52 | c | 53.55 | 59.12 | 64.16 | 61.37 | a | 59.21 | b | 45.13 | d | 38.07 | a | 29.90 | f | 45.72 | a | ||||
1999 | 28.79 | e | 32.23 | d | 36.45 | a | 38.34 | e | 48.18 | 57.17 | 62.93 | b | 61.45 | b | 53.60 | e | 46.46 | f | 42.05 | b | 25.20 | d | 44.22 | a | ||
2000 | 27.92 | g | 33.89 | j | 36.05 | j | 43.33 | f | 54.09 | b | 59.20 | 63.74 | b | 63.63 | d | 58.14 | e | 44.79 | e | 28.09 | g | 26.48 | h | 57.26 | f | |
2001 | 23.23 | e | 28.38 | g | 33.44 | e | 43.94 | d | 51.30 | c | 60.25 | d | 65.37 | a | 61.92 | 56.82 | b | 47.27 | a | 37.67 | d | 26.82 | 46.19 | a | ||
2002 | 24.98 | h | 24.23 | d | 33.07 | h | 45.50 | b | 51.72 | d | 62.00 | 64.42 | a | 62.34 | 55.41 | c | 41.00 | b | 33.04 | d | 26.62 | g | 48.85 | c | ||
2003 | 30.60 | k | 25.07 | g | 33.87 | e | 42.38 | 51.55 | a | 56.02 | a | 65.94 | 63.14 | b | 53.23 | b | 49.30 | a | 35.09 | c | 28.21 | c | 47.87 | b | ||
2004 | 26.53 | 20.96 | d | 39.00 | c | 41.13 | d | 52.94 | 57.80 | 61.17 | b | 58.47 | 54.18 | 43.93 | a | 32.95 | b | 29.22 | h | 44.46 | a | |||||
2005 | 30.68 | k | 28.33 | g | 30.30 | k | 40.31 | i | 50.00 | c | 58.95 | 64.09 | c | 60.89 | d | 56.69 | d | 46.79 | j | 38.05 | j | 29.29 | j | 58.12 | g | |
2006 | 29.19 | j | 29.66 | l | 33.14 | j | 44.34 | k | 53.77 | i | 61.41 | g | 63.89 | h | 61.48 | f | 50.07 | g | 44.62 | e | 38.70 | h | 26.37 | h | 44.62 | k |
2007 | 18.39 | i | 28.80 | h | 36.11 | m | 40.32 | e | 50.61 | d | 58.13 | c | 63.31 | 65.18 | c | 57.50 | d | 46.44 | f | 37.61 | g | 23.79 | g | 55.84 | f | |
2008 | 21.14 | i | 27.48 | i | 32.12 | j | 38.57 | g | 47.67 | d | 59.29 | a | 63.33 | a | 60.56 | 54.94 | c | 47.65 | e | 36.48 | f | 26.69 | o | 55.58 | f | |
2009 | 30.15 | d | 30.33 | d | 35.43 | j | 39.78 | g | 51.02 | e | 57.21 | b | 63.21 | 60.73 | c | 52.66 | a | 40.50 | f | 37.46 | e | 20.74 | j | 47.85 | d | |
2010 | 26.56 | g | 20.19 | g | 27.83 | m | 40.89 | k | 48.44 | f | 61.62 | d | 63.91 | h | 62.60 | e | 58.57 | g | 46.78 | f | 34.07 | i | 31.53 | l | 62.11 | j |
2011 | 25.69 | j | 23.29 | i | 36.93 | j | 42.41 | h | 47.40 | b | 62.98 | i | ----- | z | 66.30 | a | 55.64 | b | 45.07 | h | 35.21 | i | 22.62 | j | 56.45 | i |
2012 | 28.46 | g | 24.90 | e | 39.98 | h | 47.64 | h | 53.20 | a | 63.41 | a | 67.21 | c | 63.87 | 56.00 | b | 45.45 | 40.12 | f | 26.03 | a | 50.01 | d | ||
2013 | 23.69 | 24.68 | 33.76 | 40.28 | a | 50.74 | ----- | z | 63.79 | 62.87 | 57.20 | b | 42.82 | 33.22 | 26.77 | 41.80 | a | |||||||||
2014 | 26.45 | 29.95 | 35.77 | 40.43 | 50.06 | 59.82 | 62.90 | 61.06 | 57.78 | 47.64 | b | 32.58 | 27.60 | 44.34 | ||||||||||||
2015 | 27.30 | a | 28.02 | 37.32 | ----- | z | 49.89 | 61.57 | 63.06 | 63.68 | 59.67 | 48.50 | a | 34.08 | 27.81 | 45.54 | a | |||||||||
2016 | 24.55 | 30.52 | ----- | z | 40.23 | 48.45 | a | 62.12 | ----- | z | 60.11 | 57.35 | 49.74 | b | 37.78 | 26.44 | 43.73 | b | ||||||||
2017 | 26.69 | 34.70 | 42.28 | a | 41.97 | ----- | z | ----- | z | ----- | z | 60.10 | 55.93 | 45.61 | 41.77 | 31.89 | 42.33 | c | ||||||||
2018 | 30.53 | 29.98 | 36.26 | 41.83 | a | 55.37 | 62.52 | 64.45 | 62.29 | 57.72 | 45.02 | d | 31.67 | a | 26.79 | 45.37 | ||||||||||
2019 | 25.06 | 26.82 | 32.24 | 43.65 | 46.76 | 57.57 | 64.45 | 64.95 | 59.80 | 40.00 | 34.66 | a | 29.00 | 43.75 | ||||||||||||
2020 | 25.26 | 24.86 | a | 37.23 | 41.58 | 53.61 | 61.30 | 64.71 | 65.06 | 54.43 | a | 46.63 | 38.10 | 27.32 | 45.01 | |||||||||||
2021 | 24.23 | 24.23 | 33.74 | 39.92 | 49.42 | 60.43 | ----- | z | 62.52 | 58.85 | 47.13 | a | 40.00 | b | 32.77 | a | 43.02 | a | ||||||||
2022 | 27.62 | a | 22.17 | a | 30.66 | f | 42.68 | 51.97 | b | 60.55 | a | 65.27 | a | 61.82 | c | 57.95 | a | 45.26 | ----- | z | ----- | z | 48.36 | c | ||
2023 | 23.68 | a | 26.45 | f | 30.23 | i | ----- | z | 52.30 | i | 56.56 | c | 66.31 | d | 63.35 | d | 57.09 | c | 48.64 | b | ----- | z | 30.68 | f | 52.61 | f |
2024 | 19.72 | o | 25.66 | m | 34.98 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.98 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.67 | 27.74 | 33.82 | 41.74 | 50.57 | 59.22 | 63.53 | 61.98 | 55.90 | 46.19 | 35.11 | 27.65 | 43.85 | |||||||||||||
S.D. | 3.28 | 3.91 | 3.34 | 3.01 | 2.24 | 2.07 | 1.47 | 1.70 | 1.90 | 2.52 | 3.23 | 3.22 | 1.03 | |||||||||||||
SKEW | -0.15 | -0.20 | -0.03 | -0.06 | 0.26 | 0.06 | 0.14 | 0.11 | -0.15 | -0.53 | -0.01 | 0.28 | -0.70 | |||||||||||||
MAX | 33.50 | 37.11 | 42.28 | 48.52 | 56.05 | 63.88 | 67.21 | 66.30 | 59.80 | 53.02 | 42.17 | 35.90 | 45.50 | |||||||||||||
MIN | 15.63 | 17.27 | 26.08 | 33.97 | 45.23 | 54.93 | 60.06 | 58.47 | 51.52 | 38.10 | 27.33 | 19.24 | 40.91 | |||||||||||||
YRS | 66 | 66 | 65 | 70 | 74 | 74 | 71 | 77 | 78 | 76 | 70 | 62 | 36 |