YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 44.55 | k | 50.10 | 60.17 | m | 59.97 | 49.60 | 38.68 | 25.90 | 16.81 | 40.18 | f | ||||||
1948 | 17.97 | 22.86 | a | 26.81 | 30.80 | j | 43.00 | d | 54.13 | 59.35 | 58.45 | 51.23 | 40.10 | 21.03 | 24.90 | 38.17 | a | |||||||||
1949 | 24.87 | a | 24.18 | 28.94 | 35.73 | 41.03 | 50.37 | 58.74 | 54.42 | 52.30 | 36.06 | 23.27 | 18.55 | 37.37 | ||||||||||||
1950 | 19.45 | 22.57 | 26.13 | 33.83 | 36.71 | 50.03 | 59.55 | 52.68 | 45.67 | 40.26 | 24.27 | 18.00 | 35.76 | |||||||||||||
1951 | 19.90 | 23.00 | 27.71 | 35.60 | 44.26 | 45.07 | 61.23 | 60.94 | 51.17 | 42.19 | 30.57 | 26.26 | 38.99 | |||||||||||||
1952 | 27.68 | 21.83 | 27.29 | 38.57 | 44.71 | 52.67 | 58.71 | 60.16 | 49.90 | a | 35.39 | 27.10 | 21.03 | 38.75 | ||||||||||||
1953 | 19.84 | 21.04 | 32.32 | 36.07 | 37.29 | 53.13 | 62.13 | 57.29 | 45.97 | 37.52 | 26.23 | 15.39 | 37.02 | |||||||||||||
1954 | 20.58 | 24.36 | 32.06 | 39.60 | 44.65 | 52.70 | 61.81 | 58.52 | 53.10 | 42.61 | 25.20 | 18.16 | 39.45 | |||||||||||||
1955 | 20.61 | 16.64 | 27.29 | 30.83 | 42.94 | 50.07 | 60.58 | 58.94 | 47.20 | 38.87 | 26.20 | 22.13 | 36.86 | |||||||||||||
1956 | 22.26 | 19.72 | 23.61 | 32.40 | 41.42 | 56.83 | 59.16 | 55.23 | 49.40 | 39.19 | 19.53 | 18.90 | 36.47 | |||||||||||||
1957 | 29.45 | 33.43 | 33.10 | 34.70 | 41.90 | 53.27 | 61.87 | 60.19 | 45.00 | 42.81 | 26.23 | 21.77 | a | 40.31 | ||||||||||||
1958 | 19.03 | 28.00 | 30.94 | 35.20 | 43.81 | 55.40 | 58.77 | 58.77 | 53.50 | 42.13 | 27.53 | 17.06 | 39.18 | |||||||||||||
1959 | 18.26 | 22.00 | 21.58 | 37.73 | 41.35 | 54.80 | 57.35 | 60.71 | 46.83 | 37.26 | 26.93 | 26.19 | 37.58 | |||||||||||||
1960 | 17.39 | 19.10 | 27.58 | 32.83 | 38.32 | 51.50 | 57.52 | 58.42 | 51.63 | 38.68 | 28.50 | 22.23 | 36.97 | |||||||||||||
1961 | 22.69 | b | 22.00 | 27.16 | 32.13 | 39.65 | 52.80 | 58.81 | 59.23 | 51.03 | 36.06 | 29.47 | 25.87 | 38.07 | ||||||||||||
1962 | 21.06 | 27.96 | 24.19 | 37.10 | 39.26 | 47.53 | 59.97 | 55.39 | 53.77 | 39.26 | 30.53 | 26.71 | 38.56 | |||||||||||||
1963 | 19.42 | 25.86 | 25.94 | 31.60 | 41.58 | 48.23 | 60.97 | 58.16 | 52.70 | 39.39 | 28.93 | 16.52 | 37.44 | |||||||||||||
1964 | 11.00 | 12.48 | 24.23 | 32.67 | 42.42 | 49.70 | 60.61 | 59.32 | 53.13 | 37.97 | 27.50 | 23.19 | 36.19 | |||||||||||||
1965 | 24.52 | 22.57 | 26.97 | 33.43 | 40.68 | 47.80 | 60.58 | 56.77 | a | 49.97 | 34.10 | 30.13 | 26.74 | 37.85 | ||||||||||||
1966 | 18.94 | 20.50 | 25.55 | 33.53 | 43.03 | 51.37 | 60.81 | 58.90 | 51.20 | 34.97 | 29.27 | 19.29 | 37.28 | |||||||||||||
1967 | 13.00 | 22.96 | 30.06 | 34.93 | 39.58 | 53.27 | 62.39 | 57.13 | 52.30 | 36.13 | 29.23 | 22.03 | 37.75 | |||||||||||||
1968 | 23.45 | 28.45 | 31.29 | 33.70 | 39.81 | 50.45 | a | 59.13 | 55.55 | 46.23 | 36.16 | 27.13 | 18.10 | 37.45 | ||||||||||||
1969 | 26.43 | a | 23.68 | 24.65 | 34.00 | 41.39 | 49.53 | 61.23 | 60.06 | 50.10 | 36.87 | 26.70 | 22.68 | 38.11 | ||||||||||||
1970 | 17.19 | 25.29 | 28.42 | 28.97 | 41.81 | 53.27 | 60.16 | 58.90 | 51.00 | 33.68 | 24.43 | 20.16 | 36.94 | |||||||||||||
1971 | 16.61 | 22.07 | 24.77 | 33.73 | 38.97 | 49.17 | 61.19 | 58.06 | 50.83 | 40.35 | 29.20 | 25.45 | 37.54 | |||||||||||||
1972 | 19.61 | 19.45 | 29.35 | 30.27 | 39.71 | 51.83 | 59.48 | 57.19 | 50.77 | 46.32 | 24.90 | 20.00 | 37.41 | |||||||||||||
1973 | 21.00 | 27.29 | 30.16 | 30.70 | 42.03 | 49.30 | 57.45 | 55.00 | 46.17 | 33.77 | 23.77 | 15.19 | 35.99 | |||||||||||||
1974 | 23.06 | 15.25 | 29.39 | 33.03 | 41.77 | 53.10 | 58.52 | 56.06 | 50.23 | 43.90 | 26.97 | 19.94 | 37.60 | |||||||||||||
1975 | 20.52 | 24.25 | 28.81 | 30.43 | 37.45 | 47.00 | 59.48 | 57.06 | 49.97 | 35.03 | 21.55 | a | 21.16 | 36.06 | ||||||||||||
1976 | 17.61 | 26.03 | 25.84 | 33.43 | 42.74 | 48.07 | 58.10 | 55.26 | 50.27 | 36.52 | 26.00 | 16.68 | 36.38 | |||||||||||||
1977 | 25.16 | 22.43 | ----- | z | 34.43 | 40.16 | 50.90 | 60.45 | 60.43 | a | 52.40 | 41.77 | 26.97 | 23.03 | 39.83 | a | ||||||||||
1978 | 26.90 | 27.25 | 33.94 | 34.03 | 41.65 | 51.80 | 59.00 | 56.35 | 52.23 | 41.39 | 35.43 | 23.48 | 40.29 | |||||||||||||
1979 | 24.42 | 25.36 | 29.00 | 33.37 | 42.32 | 50.60 | 59.45 | 54.47 | a | 50.00 | 36.35 | 23.00 | 21.10 | 37.45 | ||||||||||||
1980 | 28.29 | 28.38 | 30.03 | 33.93 | 39.55 | 50.60 | 60.26 | 58.16 | 51.07 | 33.97 | 24.37 | 21.71 | 38.36 | |||||||||||||
1981 | 27.55 | 24.82 | 31.17 | a | 38.55 | a | 45.52 | 54.30 | 58.35 | 55.61 | 50.43 | 39.83 | a | 24.97 | 19.97 | 39.26 | ||||||||||
1982 | 23.71 | 26.61 | 29.74 | 33.90 | 39.71 | 43.67 | 55.52 | b | 56.57 | a | 48.63 | 28.77 | 28.03 | 24.39 | 36.60 | |||||||||||
1983 | 22.68 | 27.04 | 31.42 | 31.00 | 38.19 | 45.23 | 57.45 | b | 59.53 | a | 54.97 | 43.26 | 29.90 | 23.68 | 38.70 | |||||||||||
1984 | 22.29 | 16.59 | 24.47 | a | 32.10 | 45.37 | a | 54.43 | b | 62.00 | 58.27 | a | 50.80 | 42.37 | a | 29.37 | c | 28.79 | b | 38.90 | ||||||
1985 | 24.32 | 22.11 | a | 30.29 | 35.37 | 43.06 | 50.33 | 56.90 | 57.32 | 48.67 | 41.45 | 29.47 | 20.52 | 38.32 | ||||||||||||
1986 | 19.58 | 28.00 | 30.90 | 34.93 | 41.13 | 52.70 | 58.32 | 59.48 | 48.03 | 36.74 | 31.77 | 21.21 | b | 38.57 | ||||||||||||
1987 | 19.27 | a | 22.56 | a | 25.37 | a | 35.07 | 40.90 | 49.66 | a | 53.40 | a | 57.93 | a | 48.53 | 42.24 | b | 25.27 | 20.80 | a | 36.75 | |||||
1988 | 21.93 | a | 26.52 | b | 25.10 | 34.40 | 40.42 | 52.93 | 58.43 | c | 60.27 | a | 47.36 | b | 41.55 | 25.63 | 21.40 | a | 37.99 | |||||||
1989 | 21.48 | 28.30 | h | 28.42 | 35.00 | 41.97 | 48.93 | 59.03 | 57.17 | a | 48.80 | 37.61 | 24.72 | a | 15.80 | a | 38.09 | a | ||||||||
1990 | 18.52 | 22.57 | 31.32 | 38.03 | 40.48 | 53.62 | a | 59.52 | 54.60 | a | 54.67 | 35.23 | a | 29.53 | 17.48 | 37.97 | ||||||||||
1991 | 22.38 | b | 24.19 | a | 26.26 | d | 30.07 | b | 38.26 | h | 45.57 | 57.67 | a | 58.45 | 50.31 | a | 36.87 | 26.03 | 22.76 | j | 37.78 | b | ||||
1992 | 19.84 | 26.00 | 29.17 | b | 35.83 | 45.84 | 46.03 | 55.65 | 55.63 | a | 47.63 | 37.17 | b | 20.05 | j | 25.76 | b | 38.60 | a | |||||||
1993 | 30.76 | f | 24.00 | f | 29.28 | m | 31.62 | n | 42.60 | a | 49.13 | 57.72 | b | 59.14 | c | 46.93 | 37.39 | 24.53 | 20.30 | a | 42.22 | d | ||||
1994 | 16.83 | a | 22.81 | a | 30.87 | 34.00 | 43.00 | 54.21 | a | 58.29 | 59.81 | 51.97 | 37.87 | 28.83 | a | 27.29 | 38.81 | |||||||||
1995 | 24.84 | 29.48 | a | 30.26 | 28.86 | a | 37.97 | 47.23 | 54.10 | 59.17 | a | 51.17 | 34.86 | c | 28.47 | 22.27 | a | 37.39 | ||||||||
1996 | 17.55 | 31.79 | 25.62 | b | 33.66 | a | 41.81 | 54.13 | 60.07 | b | 57.84 | 48.83 | a | 36.52 | b | 26.93 | a | 17.84 | 37.71 | |||||||
1997 | 23.29 | 22.18 | 26.27 | a | 33.03 | 44.42 | 47.00 | 56.87 | a | 57.33 | a | 54.93 | c | 36.58 | 27.33 | 21.58 | 37.57 | |||||||||
1998 | 19.52 | 25.18 | 27.74 | 28.67 | 36.45 | 44.86 | a | 60.45 | 56.43 | a | 50.80 | 39.06 | 26.33 | 20.26 | 36.31 | |||||||||||
1999 | 17.58 | 18.07 | 25.90 | b | 30.43 | 40.84 | 49.53 | 61.10 | b | 56.93 | a | 51.73 | 33.10 | b | 22.74 | g | 15.16 | 36.40 | a | |||||||
2000 | 18.43 | a | 21.00 | 28.03 | a | 35.28 | a | 43.67 | a | 55.37 | 59.29 | 57.10 | a | 48.52 | a | 41.93 | a | 23.87 | 18.80 | a | 37.61 | |||||
2001 | 21.06 | 21.78 | a | 27.28 | b | 33.93 | 41.90 | 50.55 | a | 58.90 | a | 56.81 | 48.10 | 38.65 | 31.97 | 17.77 | 37.39 | |||||||||
2002 | 17.90 | 21.11 | a | 22.72 | b | 38.03 | a | 39.40 | a | 53.17 | 58.93 | b | 55.40 | a | 51.43 | 39.19 | 26.10 | 22.58 | 37.16 | |||||||
2003 | 22.57 | a | 26.50 | 26.77 | 31.40 | 42.58 | 49.67 | 59.97 | 58.52 | 51.80 | 40.87 | 27.77 | 18.58 | 38.08 | ||||||||||||
2004 | 24.93 | a | 21.10 | 33.90 | 35.14 | a | 40.72 | b | 47.00 | c | 53.97 | 54.77 | 46.37 | 37.33 | a | 28.13 | 19.26 | 36.89 | ||||||||
2005 | 25.27 | a | 31.07 | 28.45 | 30.70 | 41.13 | 48.03 | 54.90 | 56.26 | 51.40 | 39.87 | 23.86 | a | 17.10 | 37.34 | |||||||||||
2006 | 15.70 | a | 20.29 | 27.32 | c | 34.00 | 43.73 | a | 53.33 | 59.65 | 57.61 | 45.75 | b | 37.97 | b | 24.52 | g | 17.45 | 37.53 | a | ||||||
2007 | 21.65 | 23.07 | 26.16 | 32.50 | 39.73 | t | 48.55 | a | 56.87 | 57.94 | 51.52 | a | 34.97 | 28.70 | 20.06 | 36.54 | a | |||||||||
2008 | 19.27 | a | 20.96 | c | 21.13 | a | 26.79 | a | 38.68 | 48.50 | 58.69 | e | 57.38 | g | 47.36 | b | 34.26 | 24.90 | 22.62 | b | 33.01 | a | ||||
2009 | 17.32 | 18.21 | 26.27 | a | 29.20 | 42.63 | d | 50.36 | b | 57.60 | a | 56.11 | l | 48.32 | b | 36.71 | 24.87 | 20.37 | a | 33.80 | a | |||||
2010 | 20.00 | a | 24.22 | a | 25.59 | b | 33.10 | 35.65 | 49.37 | 60.23 | e | 56.52 | 50.07 | 37.17 | a | 18.50 | 19.42 | 35.82 | ||||||||
2011 | 14.19 | 15.54 | 24.03 | 32.90 | 35.65 | 46.83 | 59.43 | a | 59.44 | v | 53.29 | m | 34.50 | o | 25.27 | 20.77 | a | 30.51 | c | |||||||
2012 | 18.23 | 22.10 | 22.42 | 31.52 | a | 41.10 | 49.07 | 59.23 | a | 57.29 | 47.00 | b | 33.39 | 26.63 | 19.84 | 35.65 | ||||||||||
2013 | 16.19 | 17.75 | 29.48 | 32.24 | a | 40.00 | 51.50 | 60.26 | 57.26 | 50.80 | 31.16 | 27.87 | 19.32 | 36.15 | ||||||||||||
2014 | 16.48 | 24.22 | a | 28.94 | 34.31 | a | 39.61 | c | 50.60 | 59.35 | 56.30 | a | 55.46 | b | 39.19 | 24.63 | c | 24.58 | 37.81 | |||||||
2015 | 23.00 | a | 26.21 | 30.97 | 33.77 | 40.00 | b | 54.50 | 60.55 | b | 57.97 | 52.27 | 42.81 | 26.17 | 20.16 | 39.03 | ||||||||||
2016 | 19.38 | b | 19.93 | 26.67 | a | 32.60 | 40.48 | b | 54.77 | 58.03 | 56.32 | 50.28 | a | 39.03 | 29.33 | 24.90 | 37.64 | |||||||||
2017 | 24.97 | 25.71 | 29.40 | a | 32.34 | a | 40.63 | a | 51.58 | d | 58.38 | b | 55.89 | c | 49.00 | c | 38.58 | 30.41 | a | 20.47 | a | 38.11 | ||||
2018 | 18.80 | a | 26.71 | 29.13 | 36.37 | 41.58 | 53.24 | a | 60.07 | b | 57.55 | b | 50.90 | a | 42.93 | b | 23.21 | a | 23.77 | 38.69 | ||||||
2019 | 22.42 | 25.25 | 29.61 | 33.62 | a | 37.41 | b | 48.48 | a | 57.57 | a | 58.53 | a | 52.83 | 35.42 | 30.14 | a | 24.45 | 37.98 | |||||||
2020 | 21.87 | 23.96 | b | 33.50 | a | 33.90 | a | 43.17 | a | 51.10 | 59.41 | b | 57.81 | d | 46.63 | 34.55 | 27.10 | a | 16.03 | 37.42 | ||||||
2021 | 19.16 | 20.63 | a | 24.65 | 35.63 | 41.55 | 56.52 | a | 59.61 | c | 57.48 | b | 51.10 | a | 35.90 | 26.33 | 23.31 | b | 37.66 | |||||||
2022 | 19.61 | 17.00 | 24.71 | 33.63 | 39.16 | 54.87 | 59.60 | a | 58.45 | b | 50.55 | a | 38.90 | 21.44 | c | 22.06 | 36.67 | |||||||||
2023 | 19.32 | 20.39 | 27.67 | a | 30.57 | 38.97 | a | 46.61 | b | 58.42 | 58.71 | 50.72 | a | 38.81 | 28.33 | 20.39 | 36.58 | |||||||||
2024 | 23.10 | 25.90 | 29.71 | 31.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.64 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.82 | 23.27 | 27.87 | 33.48 | 41.03 | 50.69 | 59.01 | 57.57 | 50.15 | 38.08 | 26.71 | 20.99 | 37.62 | |||||||||||||
S.D. | 3.54 | 3.91 | 2.90 | 2.48 | 2.28 | 3.00 | 1.85 | 1.73 | 2.40 | 3.21 | 2.90 | 3.17 | 1.05 | |||||||||||||
SKEW | 0.07 | -0.10 | -0.04 | -0.01 | -0.21 | -0.14 | -0.85 | -0.26 | -0.11 | -0.04 | -0.16 | 0.24 | 0.32 | |||||||||||||
MAX | 29.45 | 33.43 | 33.94 | 39.60 | 45.84 | 56.83 | 62.39 | 60.94 | 55.46 | 46.32 | 35.43 | 28.79 | 40.31 | |||||||||||||
MIN | 11.00 | 12.48 | 21.13 | 26.79 | 35.65 | 43.67 | 53.40 | 52.68 | 45.00 | 28.77 | 18.50 | 15.16 | 35.65 | |||||||||||||
YRS | 76 | 75 | 75 | 75 | 74 | 77 | 76 | 74 | 76 | 76 | 74 | 76 | 64 |