YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | 48.34 | 51.37 | 60.86 | b | 57.47 | a | 47.68 | 42.48 | d | 34.02 | 24.18 | 45.80 | d | |||||
1942 | 22.58 | 26.73 | 32.23 | 40.52 | 43.46 | c | 48.67 | 61.21 | 59.87 | 52.03 | 44.47 | a | 33.03 | 29.68 | 41.21 | |||||||||||
1943 | 21.08 | 29.32 | 32.53 | 42.88 | 45.27 | 50.42 | 60.31 | 56.66 | 57.32 | 45.87 | 35.67 | 26.82 | 42.01 | |||||||||||||
1944 | 20.35 | 26.36 | 31.56 | 38.78 | 45.60 | 49.53 | 58.03 | 55.45 | 52.40 | 46.55 | 31.43 | 25.19 | 40.10 | |||||||||||||
1945 | 27.18 | 31.29 | 32.24 | 38.28 | 47.48 | 51.16 | a | 60.65 | 59.35 | 50.60 | 44.53 | 31.55 | 26.74 | 41.75 | ||||||||||||
1946 | 21.03 | 25.20 | 31.55 | 40.82 | 47.37 | 50.03 | 59.47 | 58.52 | 48.27 | 35.98 | 30.42 | 28.27 | a | 39.74 | ||||||||||||
1947 | 21.15 | 33.64 | 37.13 | 39.83 | 50.81 | 49.30 | 56.50 | 55.45 | 51.38 | 45.92 | 34.73 | 28.06 | 41.99 | |||||||||||||
1948 | 26.34 | 28.22 | b | 30.84 | 36.47 | 45.11 | 56.72 | c | 58.40 | a | 56.57 | c | 49.60 | d | 43.69 | e | 31.46 | c | 18.69 | j | 42.13 | a | ||||
1949 | 13.66 | 27.88 | 35.57 | a | 46.48 | a | 51.61 | 52.82 | 58.15 | 57.93 | a | 53.12 | 39.18 | 39.22 | 27.02 | 41.89 | ||||||||||
1950 | 20.73 | a | 29.12 | c | 30.11 | 37.25 | 44.76 | 52.48 | 59.87 | 59.61 | 50.95 | 41.60 | 35.17 | a | 34.19 | 41.32 | ||||||||||
1951 | 23.77 | 28.54 | a | 29.05 | b | 41.31 | a | 45.50 | 53.00 | e | 63.08 | s | 59.10 | b | 53.27 | b | 41.78 | a | 33.74 | a | 24.13 | 39.38 | a | |||
1952 | 21.82 | 27.37 | b | 30.26 | 42.68 | 48.69 | 54.30 | 62.37 | 59.44 | 54.95 | 48.18 | 28.57 | 25.79 | 42.03 | ||||||||||||
1953 | 34.40 | b | 31.50 | a | 34.13 | 39.15 | 43.16 | 48.37 | 61.00 | 57.63 | a | 56.42 | 44.27 | a | 40.17 | a | 31.94 | 43.51 | ||||||||
1954 | 28.74 | 33.34 | 30.55 | 41.25 | 49.73 | 49.78 | a | 58.68 | 54.97 | 50.37 | 44.10 | e | 38.85 | 27.81 | 42.35 | |||||||||||
1955 | 23.29 | 27.30 | 29.55 | a | 34.19 | a | 44.31 | 54.98 | 55.98 | a | 59.48 | 51.22 | 45.06 | 32.21 | m | 29.44 | d | 41.35 | a | |||||||
1956 | 29.68 | 26.72 | 34.27 | 43.62 | 51.00 | a | 53.83 | a | 64.23 | a | 60.66 | 55.13 | 43.45 | 36.32 | 32.41 | b | 44.28 | |||||||||
1957 | 18.11 | 32.11 | 35.95 | 42.52 | 50.81 | 57.72 | 59.79 | 57.73 | 56.77 | 43.32 | 33.86 | a | 33.20 | a | 43.49 | |||||||||||
1958 | 30.47 | 37.41 | 34.02 | 40.75 | 55.27 | 57.27 | 66.10 | 65.53 | 53.48 | 48.23 | 37.73 | 36.81 | 46.92 | |||||||||||||
1959 | 33.42 | 31.68 | 37.60 | 43.98 | 45.95 | 56.65 | 64.69 | 59.21 | 51.10 | 46.81 | 38.82 | 29.97 | 44.99 | |||||||||||||
1960 | 26.52 | 29.88 | 37.19 | 41.30 | 45.90 | 58.37 | 66.26 | 58.98 | 55.45 | 45.81 | 34.32 | 28.81 | 44.07 | |||||||||||||
1961 | 32.69 | 35.62 | 35.58 | 42.40 | 47.08 | 61.40 | 64.18 | 65.27 | 50.88 | 45.13 | 34.34 | a | 29.69 | 45.36 | ||||||||||||
1962 | 26.65 | 31.23 | 33.19 | 45.45 | 45.77 | a | 55.90 | 61.58 | 58.19 | 56.10 | 45.29 | 38.03 | 33.84 | 44.27 | ||||||||||||
1963 | 26.11 | 39.23 | 35.97 | 37.80 | 50.24 | 54.37 | 58.15 | 60.85 | 59.53 | 46.48 | 36.33 | 32.16 | 44.77 | |||||||||||||
1964 | 27.23 | a | 28.71 | 29.72 | a | 42.70 | t | 46.58 | 53.58 | 61.41 | c | 56.85 | 50.47 | 46.02 | 40.00 | w | 28.02 | b | 42.86 | b | ||||||
1965 | 29.68 | c | 33.58 | b | 35.84 | 41.93 | 45.95 | 55.35 | 60.92 | a | 59.36 | b | 48.85 | 48.90 | 37.60 | 26.69 | 43.72 | |||||||||
1966 | 26.66 | 27.82 | 32.94 | 42.97 | 50.97 | 52.50 | 57.81 | 60.31 | 54.47 | 44.77 | 37.37 | 31.52 | d | 43.34 | ||||||||||||
1967 | 30.18 | 32.04 | a | 31.74 | 36.59 | h | 48.74 | 56.16 | a | 63.69 | 64.29 | 56.18 | 42.92 | 37.15 | g | 24.57 | b | 45.05 | b | |||||||
1968 | 27.66 | 34.45 | 37.79 | b | 38.55 | 46.39 | 55.18 | 62.92 | 56.95 | c | 54.18 | b | 42.89 | 34.33 | c | 27.93 | k | 44.66 | a | |||||||
1969 | 22.84 | 25.16 | 32.63 | 39.50 | 50.95 | 57.07 | 59.07 | h | 58.52 | 53.67 | 39.00 | 37.73 | 32.27 | 40.85 | a | |||||||||||
1970 | 29.35 | 35.07 | f | 35.55 | 35.83 | 48.48 | 58.87 | 63.21 | 61.62 | c | 49.23 | d | 41.60 | 35.65 | 25.63 | a | 44.09 | a | ||||||||
1971 | 27.90 | 30.39 | 29.02 | 38.60 | 47.74 | 51.90 | 63.53 | 64.48 | 49.37 | 40.47 | 36.03 | 26.85 | 42.19 | |||||||||||||
1972 | 25.45 | 31.00 | 38.39 | 37.82 | 50.26 | 57.10 | 62.60 | 62.02 | 49.73 | 43.00 | 35.85 | 22.26 | 42.96 | |||||||||||||
1973 | 24.02 | 31.16 | 33.68 | 41.80 | 50.81 | 55.22 | 62.50 | 60.81 | 53.40 | 43.53 | 34.10 | d | 32.58 | 43.63 | ||||||||||||
1974 | 22.61 | 29.20 | 32.56 | 38.75 | 45.15 | 59.38 | 59.52 | 61.29 | 57.38 | 45.50 | 37.37 | 30.55 | a | 43.27 | ||||||||||||
1975 | 28.77 | 27.25 | 30.42 | 33.00 | 46.60 | 53.80 | 63.76 | 58.06 | 56.18 | 43.34 | 32.23 | 31.79 | 42.10 | |||||||||||||
1976 | 29.94 | 29.62 | 32.53 | 38.33 | 48.29 | 51.38 | 61.44 | 57.27 | 56.28 | 46.85 | 39.07 | 29.98 | 43.42 | |||||||||||||
1977 | 24.15 | 34.54 | 32.66 | 43.97 | a | 43.18 | 60.17 | 61.11 | 65.00 | 51.52 | 45.77 | 33.88 | 32.33 | a | 44.02 | |||||||||||
1978 | 31.92 | 33.14 | 40.26 | 39.62 | 45.06 | 55.38 | 61.98 | 59.81 | 50.47 | a | 48.50 | c | 30.47 | 24.15 | 43.40 | |||||||||||
1979 | 20.22 | b | 30.84 | 37.87 | 40.80 | 51.06 | 57.02 | 63.37 | a | 60.50 | 57.65 | 48.31 | 33.37 | 32.32 | a | 44.44 | ||||||||||
1980 | 26.73 | 35.00 | 35.45 | 42.63 | 48.30 | a | 51.58 | 63.37 | 58.94 | 54.57 | 46.10 | 36.80 | 32.33 | a | 44.32 | |||||||||||
1981 | 32.77 | a | 33.43 | a | 37.29 | 42.32 | 47.68 | 54.42 | 60.47 | 64.85 | a | 55.43 | 43.16 | 37.00 | 31.69 | 45.04 | ||||||||||
1982 | 24.05 | a | 27.61 | a | 33.65 | a | 37.14 | a | 48.55 | 56.52 | 61.17 | a | 61.61 | 51.16 | a | 44.17 | b | 31.33 | a | 27.10 | a | 42.00 | ||||
1983 | 31.88 | a | 32.88 | 36.97 | 38.48 | 50.00 | 52.92 | 56.77 | 62.56 | 52.24 | a | 46.27 | 35.47 | a | 23.23 | 43.31 | ||||||||||
1984 | 28.33 | a | 31.11 | a | ----- | z | 37.09 | a | 45.86 | b | 51.98 | 63.79 | 61.47 | 51.64 | a | 40.28 | a | 32.34 | a | 23.00 | 42.45 | a | ||||
1985 | 24.26 | 26.96 | a | 31.65 | 44.60 | 48.43 | a | 57.52 | a | 67.05 | 59.29 | 48.76 | a | 43.24 | 26.22 | a | 23.73 | c | 41.81 | |||||||
1986 | 32.17 | a | 31.93 | 39.22 | a | 40.33 | 48.79 | 60.55 | b | 58.26 | 65.97 | 48.82 | 46.76 | 37.34 | a | 29.93 | a | 45.01 | ||||||||
1987 | 26.28 | a | 31.82 | c | 36.92 | a | 47.50 | a | 52.44 | 59.67 | 58.74 | 61.82 | 58.27 | 50.61 | 37.12 | 27.58 | 45.73 | |||||||||
1988 | 25.47 | b | 33.95 | 36.66 | 42.93 | b | 46.27 | 55.42 | 64.21 | 61.31 | 54.67 | 53.56 | 34.68 | 28.59 | c | 44.81 | ||||||||||
1989 | 27.11 | 21.60 | b | 34.66 | 45.35 | 46.89 | 57.53 | 60.98 | 58.63 | 54.18 | 44.50 | 37.48 | a | 31.77 | 43.39 | |||||||||||
1990 | 30.67 | a | 26.65 | a | 37.16 | 47.12 | 46.53 | a | 54.98 | 65.00 | 62.60 | 59.22 | a | 43.71 | 36.18 | b | 20.78 | a | 44.22 | |||||||
1991 | 28.48 | a | 39.09 | 34.98 | 39.22 | 44.55 | a | 51.71 | a | 64.39 | 63.27 | 58.20 | 46.95 | 36.53 | a | 31.10 | a | 44.87 | ||||||||
1992 | 30.21 | 38.05 | 41.20 | d | 45.35 | 55.15 | 61.12 | a | 61.95 | 63.37 | 54.93 | 48.10 | a | 34.45 | 25.02 | 46.58 | ||||||||||
1993 | 20.55 | a | 23.73 | 37.35 | a | 39.57 | 51.24 | 52.97 | 55.57 | a | 59.39 | 57.02 | a | 48.69 | 31.47 | 30.47 | a | 42.33 | ||||||||
1994 | 33.11 | 30.50 | b | 39.06 | 44.14 | a | 51.52 | 55.10 | 65.85 | 61.95 | 57.63 | 44.21 | b | 27.27 | b | 27.56 | 44.83 | |||||||||
1995 | 31.42 | 39.37 | a | 34.85 | a | 40.10 | 48.82 | 53.72 | 61.34 | 58.61 | 58.10 | 44.45 | a | 39.83 | c | 31.34 | b | 45.16 | ||||||||
1996 | 30.79 | 31.41 | a | 36.44 | 42.28 | a | 45.69 | 55.32 | 65.55 | a | 63.02 | 53.23 | 45.23 | 37.87 | ----- | z | 46.07 | a | ||||||||
1997 | 27.70 | a | 31.77 | 38.42 | a | 39.68 | 52.98 | 54.45 | 62.27 | a | 62.87 | 55.26 | a | 44.58 | a | 38.43 | 28.85 | 44.77 | ||||||||
1998 | 32.88 | a | 33.05 | 36.55 | c | 40.92 | 43.89 | 54.65 | 66.87 | 64.85 | 59.26 | a | 43.53 | b | 35.32 | b | 26.32 | a | 44.84 | |||||||
1999 | 30.52 | 27.61 | 31.85 | 37.48 | 44.29 | 53.40 | a | 60.23 | 61.79 | 55.20 | 47.29 | b | 40.30 | 30.13 | 43.34 | |||||||||||
2000 | 28.27 | c | 32.88 | a | 34.74 | 43.70 | 47.66 | 57.38 | 61.50 | 63.19 | 54.65 | 44.03 | b | 31.20 | 29.33 | b | 44.04 | |||||||||
2001 | 28.94 | 29.04 | 37.37 | 37.95 | 52.10 | 53.13 | 62.21 | 64.94 | 57.57 | 46.16 | 37.13 | 28.32 | 44.57 | |||||||||||||
2002 | 27.14 | c | 31.07 | 33.47 | b | 42.93 | 46.82 | 57.98 | 66.24 | 60.60 | 55.70 | 43.93 | a | 37.02 | a | 32.48 | a | 44.62 | ||||||||
2003 | 35.10 | 32.05 | 37.77 | a | 38.62 | 47.69 | 59.48 | 67.23 | 63.53 | 58.20 | 48.30 | a | 31.40 | 32.00 | a | 45.95 | ||||||||||
2004 | 30.02 | 32.12 | a | 40.74 | 44.20 | 47.40 | 57.17 | 65.05 | 64.00 | 53.53 | 45.94 | 36.17 | 32.31 | 45.72 | ||||||||||||
2005 | 30.89 | 32.80 | 39.37 | 41.17 | 49.76 | 51.02 | c | 65.11 | 64.05 | 53.50 | 46.10 | 33.65 | c | 26.50 | 44.49 | |||||||||||
2006 | 30.65 | 29.06 | b | 31.73 | 41.63 | 51.06 | 57.84 | b | 67.31 | 61.74 | 56.60 | 45.78 | a | 35.35 | 29.06 | 44.82 | ||||||||||
2007 | 26.75 | c | 32.15 | a | 40.18 | 41.47 | 50.90 | 56.20 | 67.24 | 62.37 | 53.95 | 43.37 | 37.61 | b | 26.89 | 44.92 | ||||||||||
2008 | 23.36 | b | 30.55 | 31.63 | a | 35.48 | 48.69 | 53.55 | 64.85 | 62.27 | 56.08 | 46.87 | 39.57 | 28.47 | b | 43.45 | ||||||||||
2009 | 29.98 | b | 31.89 | 32.53 | 39.67 | a | 51.57 | c | 56.83 | 66.16 | 63.15 | 59.00 | a | 42.67 | a | 35.68 | 24.45 | a | 44.47 | |||||||
2010 | 34.68 | 35.23 | 38.06 | 38.68 | 44.48 | 53.67 | 64.48 | 62.08 | 55.43 | 48.15 | a | 34.68 | 30.39 | 45.00 | ||||||||||||
2011 | 30.13 | a | 28.94 | c | 35.08 | a | 36.32 | 44.39 | 53.10 | 60.79 | 65.50 | 60.50 | 47.69 | 35.32 | 29.42 | 43.93 | ||||||||||
2012 | 31.34 | 32.05 | 34.65 | a | 43.53 | 49.35 | 53.47 | 64.55 | 65.95 | 59.57 | 47.89 | 37.68 | 29.82 | 45.82 | ||||||||||||
2013 | 25.73 | 32.00 | 37.19 | 43.37 | 49.26 | 56.03 | 67.60 | 65.39 | 58.25 | 44.53 | 35.18 | 30.19 | d | 45.39 | ||||||||||||
2014 | 33.58 | 32.71 | 39.85 | 44.45 | 52.61 | 55.47 | 69.11 | 64.26 | 59.27 | 51.00 | 35.63 | 33.63 | 47.63 | |||||||||||||
2015 | 35.11 | 38.68 | 42.79 | 41.37 | 50.32 | 63.07 | 64.37 | 64.19 | 54.20 | 50.73 | 33.77 | 29.16 | 47.31 | |||||||||||||
2016 | 28.90 | 35.97 | 37.00 | 47.63 | 50.69 | 57.42 | 61.94 | 63.68 | 53.03 | 43.73 | 40.42 | 21.82 | 45.19 | |||||||||||||
2017 | 22.15 | 31.34 | 36.97 | 40.28 | 50.90 | 57.35 | 67.77 | 68.85 | 59.27 | 45.06 | 37.65 | 31.24 | 45.74 | |||||||||||||
2018 | 37.03 | 30.77 | 36.39 | 43.65 | 55.05 | 57.33 | 67.53 | 65.00 | 55.08 | 46.74 | 36.98 | 29.45 | 46.75 | |||||||||||||
2019 | 32.73 | 24.91 | 31.40 | 42.97 | 51.18 | 58.95 | 62.82 | 65.74 | 55.43 | 40.73 | 38.47 | 30.63 | 44.66 | |||||||||||||
2020 | 32.44 | 34.67 | 35.50 | 44.22 | 50.76 | 56.70 | 64.85 | 66.27 | 59.60 | 48.39 | 34.70 | 30.08 | 46.51 | |||||||||||||
2021 | 31.90 | 31.32 | 36.10 | 43.95 | 50.24 | 63.70 | 69.32 | 64.92 | 56.83 | 44.53 | 38.45 | 31.21 | 46.87 | |||||||||||||
2022 | 30.74 | 33.91 | 39.19 | 37.45 | 46.19 | 56.83 | 68.65 | 69.18 | 59.42 | 51.40 | 30.42 | 26.06 | 45.79 | |||||||||||||
2023 | 26.06 | 28.48 | 28.57 | c | 39.03 | 53.44 | 58.52 | 67.50 | 66.94 | 55.68 | 47.48 | 36.63 | 34.31 | 45.22 | ||||||||||||
2024 | 30.58 | 33.40 | 36.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.33 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.81 | 31.15 | 34.99 | 40.96 | 48.43 | 55.26 | 62.77 | 61.53 | 54.52 | 45.26 | 35.34 | 28.94 | 44.14 | |||||||||||||
S.D. | 4.47 | 3.56 | 3.22 | 3.07 | 2.92 | 3.24 | 3.27 | 3.19 | 3.26 | 2.90 | 2.99 | 3.28 | 1.66 | |||||||||||||
SKEW | -0.50 | 0.09 | 0.00 | -0.07 | 0.21 | 0.12 | -0.07 | 0.07 | -0.19 | -0.09 | -0.71 | -0.32 | -0.32 | |||||||||||||
MAX | 37.03 | 39.37 | 42.79 | 47.63 | 55.27 | 63.70 | 69.32 | 69.18 | 60.50 | 53.56 | 40.42 | 36.81 | 47.63 | |||||||||||||
MIN | 13.66 | 21.60 | 28.57 | 33.00 | 43.16 | 48.37 | 55.57 | 54.97 | 47.68 | 35.98 | 26.22 | 20.78 | 39.74 | |||||||||||||
YRS | 83 | 82 | 82 | 80 | 83 | 83 | 81 | 83 | 83 | 83 | 80 | 80 | 72 |