YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1944 | ----- | z | ----- | z | ----- | z | ----- | z | 50.62 | r | 53.57 | 60.74 | 57.06 | 50.87 | 42.00 | 33.43 | b | 25.67 | j | 49.61 | f | |||||
1945 | 32.52 | 33.00 | 35.58 | 40.21 | a | 49.81 | 53.76 | a | 60.45 | 59.13 | 48.97 | 41.23 | 33.63 | 27.97 | 43.02 | |||||||||||
1946 | 26.50 | a | 29.50 | 36.70 | a | 40.33 | 48.10 | 53.90 | 60.84 | 58.04 | f | 49.93 | 39.63 | a | 30.63 | 28.65 | 40.43 | a | ||||||||
1947 | 22.84 | 28.07 | a | 35.16 | 41.38 | a | 51.84 | 54.27 | 60.74 | 57.19 | 52.87 | 47.70 | a | 36.80 | 30.42 | 43.27 | ||||||||||
1948 | 26.19 | 24.43 | a | ----- | z | ----- | z | ----- | z | 58.27 | 54.68 | 57.16 | 49.92 | f | 34.84 | l | 33.07 | 22.29 | 39.44 | e | ||||||
1949 | 2.30 | a | 23.21 | 33.19 | 38.70 | 50.71 | 51.57 | 58.35 | 57.58 | 51.43 | 35.23 | 36.70 | 29.03 | 39.00 | ||||||||||||
1950 | 7.77 | 22.71 | 33.00 | 37.60 | 43.65 | 54.67 | 57.13 | 59.58 | 49.17 | 42.19 | 35.66 | a | 34.19 | 39.78 | ||||||||||||
1951 | 28.33 | a | 28.39 | 30.84 | 38.60 | 47.84 | 55.07 | 60.47 | a | 57.84 | 50.53 | 43.87 | 32.97 | 23.68 | 41.54 | |||||||||||
1952 | 22.23 | 31.34 | 35.65 | 42.43 | 51.03 | 56.30 | 61.13 | 64.39 | 52.80 | 43.87 | 27.63 | 32.61 | 43.45 | |||||||||||||
1953 | 39.29 | 34.43 | 38.19 | 41.83 | 48.29 | 53.10 | 59.71 | 59.74 | 52.10 | 43.58 | 37.10 | 35.29 | 45.22 | |||||||||||||
1954 | 25.06 | 36.11 | 31.87 | 41.07 | 48.74 | 53.73 | 59.26 | 58.00 | 49.03 | 37.48 | 39.27 | 30.35 | 42.50 | |||||||||||||
1955 | 28.68 | 29.36 | 32.32 | 38.33 | 45.23 | 55.60 | 58.71 | 57.19 | 51.30 | 43.61 | 27.27 | 25.90 | 41.13 | |||||||||||||
1956 | 27.48 | 21.17 | 35.35 | 41.97 | 51.39 | 52.37 | 61.29 | 57.23 | 50.90 | 42.35 | 31.60 | 30.61 | 41.98 | |||||||||||||
1957 | 13.13 | 28.25 | 35.58 | 42.10 | 52.10 | 56.17 | 59.58 | 57.87 | 53.13 | 42.13 | 31.70 | 34.67 | a | 42.20 | ||||||||||||
1958 | 33.06 | 38.79 | 34.42 | 42.27 | 54.52 | 60.23 | 65.77 | 62.94 | 53.73 | 40.61 | 35.90 | 32.26 | 46.21 | |||||||||||||
1959 | 27.87 | 30.86 | 35.35 | 41.50 | 46.16 | 54.63 | 59.77 | 56.71 | 52.17 | 42.58 | 29.10 | 29.77 | 42.21 | |||||||||||||
1960 | 18.52 | 31.03 | 35.32 | 42.87 | 47.90 | 54.53 | 63.16 | 58.10 | 51.07 | 44.06 | 34.83 | 26.87 | 42.36 | |||||||||||||
1961 | 30.81 | 39.32 | 38.94 | 42.43 | 48.87 | 58.07 | 61.23 | 62.87 | 48.93 | 39.94 | 26.04 | b | 29.23 | 43.89 | ||||||||||||
1962 | 24.58 | 30.36 | 33.81 | 43.30 | 48.06 | 53.47 | 59.19 | 57.55 | 51.50 | 43.23 | 38.03 | 34.45 | 43.13 | |||||||||||||
1963 | 20.94 | 32.68 | 35.45 | 41.90 | 48.81 | 55.60 | 57.84 | 59.00 | 55.33 | 44.84 | 38.30 | 27.77 | 43.20 | |||||||||||||
1964 | 31.68 | 28.21 | 33.06 | 39.10 | 46.29 | 54.53 | 59.23 | 56.26 | 50.33 | 41.19 | 35.33 | 24.03 | 41.60 | |||||||||||||
1965 | 30.84 | 33.57 | 30.58 | 43.40 | 46.68 | 54.50 | 59.68 | 60.87 | 50.20 | 45.23 | 40.03 | 29.26 | 43.74 | |||||||||||||
1966 | 31.68 | 32.86 | 35.23 | 41.66 | a | 48.06 | 52.87 | 57.13 | 57.29 | 53.30 | 40.97 | 36.93 | 33.13 | 43.42 | ||||||||||||
1967 | 35.06 | 34.82 | 35.42 | 37.80 | 46.48 | 55.77 | 58.52 | 59.45 | 53.00 | 43.68 | 34.33 | 28.61 | 43.58 | |||||||||||||
1968 | 29.32 | 33.14 | 37.35 | 38.87 | 49.00 | 54.73 | 60.35 | 57.00 | 52.13 | 40.35 | 35.53 | 26.71 | 42.88 | |||||||||||||
1969 | 16.70 | a | 26.89 | 33.16 | 41.83 | 50.03 | 59.30 | 56.87 | 52.77 | 49.97 | a | 36.03 | 31.67 | 30.77 | a | 40.50 | ||||||||||
1970 | 26.61 | 32.18 | 31.83 | a | 36.87 | 45.60 | a | 56.37 | 60.03 | 54.83 | a | 45.63 | 35.48 | 31.20 | 25.10 | 40.14 | ||||||||||
1971 | 29.07 | a | 28.04 | 30.68 | 38.43 | 47.97 | 50.77 | 57.68 | 59.97 | 45.20 | 38.10 | 32.57 | 25.52 | 40.33 | ||||||||||||
1972 | 25.81 | 28.93 | 35.45 | 36.87 | 48.81 | 54.83 | a | 57.93 | a | 57.57 | a | 45.87 | 36.68 | 33.63 | 22.48 | 40.40 | ||||||||||
1973 | 21.55 | 28.96 | 34.32 | 38.53 | 46.26 | 52.18 | b | 57.35 | 54.61 | 50.53 | 41.68 | 35.47 | 34.35 | 41.32 | ||||||||||||
1974 | 23.29 | 34.75 | 35.94 | 42.87 | 47.16 | 56.27 | 59.03 | 59.23 | 51.23 | 39.26 | 37.47 | 32.10 | 43.22 | |||||||||||||
1975 | 28.48 | 26.48 | a | 33.77 | 36.83 | 46.35 | 53.13 | 62.48 | 57.10 | 49.13 | 43.87 | 33.27 | 29.48 | 41.70 | ||||||||||||
1976 | 27.61 | 30.55 | 32.10 | 39.63 | 45.81 | 51.67 | 57.84 | 57.94 | 53.20 | 38.61 | 31.43 | 24.00 | 40.87 | |||||||||||||
1977 | 22.57 | a | 32.75 | 36.90 | 43.10 | a | 47.81 | 59.47 | 60.71 | 64.87 | 51.41 | a | 39.97 | 34.50 | 31.42 | 43.79 | ||||||||||
1978 | 28.90 | 33.75 | 38.19 | 43.20 | 47.61 | 56.47 | 61.20 | a | 59.48 | 51.90 | 37.61 | 26.57 | 23.65 | 42.38 | ||||||||||||
1979 | 7.94 | 28.68 | 34.97 | 41.77 | 49.61 | 55.07 | 61.26 | 61.16 | 54.03 | 45.65 | 32.17 | 33.45 | 42.15 | |||||||||||||
1980 | 20.03 | 30.55 | 36.58 | 42.73 | 49.97 | 54.40 | 60.48 | 56.65 | ----- | z | 41.35 | 36.37 | 32.16 | 41.93 | a | |||||||||||
1981 | 33.97 | 32.50 | 37.29 | 42.43 | 49.00 | 54.47 | 58.26 | 60.23 | 51.33 | 39.32 | 34.00 | 28.06 | 43.41 | |||||||||||||
1982 | 26.16 | 31.07 | a | 34.94 | 38.40 | 46.10 | a | 55.87 | 58.13 | 57.90 | 50.79 | a | 39.32 | 29.30 | 26.57 | c | 41.21 | |||||||||
1983 | 31.81 | 34.71 | 40.20 | a | 38.90 | 48.32 | 53.80 | 59.48 | d | 62.60 | a | 45.57 | 37.55 | 38.13 | 18.00 | 42.42 | ||||||||||
1984 | 25.06 | 32.41 | 38.35 | 39.57 | 43.39 | 52.23 | 58.34 | b | 57.24 | b | 47.48 | a | 37.45 | 33.83 | a | 22.43 | a | 40.65 | ||||||||
1985 | 23.10 | 22.75 | 32.81 | 42.59 | a | 49.03 | 54.60 | 61.58 | 56.39 | 48.40 | 41.48 | 22.93 | 19.68 | 39.61 | ||||||||||||
1986 | 28.29 | 32.18 | 38.94 | 38.10 | 47.42 | 57.37 | 56.53 | a | 61.68 | 51.90 | a | 41.81 | 38.80 | 29.55 | 43.55 | |||||||||||
1987 | 26.29 | 32.19 | a | 38.42 | 44.07 | 50.94 | 54.93 | 62.33 | p | 56.65 | 50.97 | 37.94 | 36.37 | 27.55 | 41.48 | a | ||||||||||
1988 | 26.69 | b | 29.38 | 35.58 | 42.93 | 47.61 | 54.67 | 58.68 | 56.07 | a | 49.47 | 43.74 | 38.28 | a | 27.33 | a | 42.54 | |||||||||
1989 | 30.00 | a | 18.37 | a | 35.52 | 43.60 | 47.87 | 56.24 | a | 58.17 | a | 57.57 | a | 49.33 | 40.52 | 37.17 | a | 29.32 | 41.97 | |||||||
1990 | 34.57 | a | 28.54 | 33.80 | a | 43.43 | 47.29 | 55.41 | a | 61.35 | 61.29 | 54.27 | 41.16 | 38.37 | 19.00 | a | 43.21 | |||||||||
1991 | 21.23 | 33.07 | 32.97 | 40.90 | 47.13 | 51.30 | 59.32 | 61.23 | a | 50.97 | a | 38.67 | a | 35.60 | 32.83 | a | 42.10 | |||||||||
1992 | 31.84 | 33.62 | 35.93 | b | 42.63 | c | 48.45 | 58.00 | 60.03 | 57.35 | 48.90 | 41.10 | 35.00 | a | 24.35 | 43.10 | ||||||||||
1993 | 17.76 | b | 24.68 | 31.68 | 41.90 | a | 52.30 | a | 54.37 | 56.32 | 56.84 | 49.07 | 41.52 | 25.67 | 32.10 | 40.35 | ||||||||||
1994 | ----- | z | 28.96 | a | 35.31 | b | 44.80 | 50.14 | b | 53.37 | 60.65 | ----- | z | ----- | z | 42.00 | 31.97 | a | 29.77 | a | 41.88 | c | ||||
1995 | 28.32 | 33.33 | a | ----- | z | 41.00 | d | 49.81 | 54.87 | 60.29 | 55.74 | 53.83 | ----- | z | 37.20 | 29.52 | 44.39 | b | ||||||||
1996 | 24.26 | 23.76 | 33.87 | a | 42.57 | 45.13 | 51.76 | a | 59.00 | 56.87 | 49.40 | 41.65 | 31.14 | a | 23.86 | c | 40.27 | |||||||||
1997 | 26.32 | 31.18 | 36.87 | 40.07 | 49.30 | a | 53.77 | 58.19 | 61.24 | b | 52.70 | 41.34 | b | 35.15 | c | 29.26 | 42.95 | |||||||||
1998 | 29.32 | 33.07 | 36.81 | 39.00 | 49.13 | 55.34 | a | 64.39 | 60.10 | 54.40 | 39.87 | ----- | z | 27.35 | 44.43 | a | ||||||||||
1999 | 32.68 | 35.00 | 35.23 | 37.17 | a | 44.35 | 53.73 | 56.74 | 61.39 | 46.90 | 39.68 | 38.67 | 33.48 | 42.92 | ||||||||||||
2000 | 28.81 | 31.07 | 34.45 | 41.87 | 49.39 | 53.80 | 58.16 | 58.06 | 50.40 | 40.45 | 28.97 | 27.26 | 41.89 | |||||||||||||
2001 | 29.39 | 28.36 | 33.83 | a | 40.73 | 47.68 | 52.63 | 59.42 | 60.23 | ----- | z | 42.33 | a | 35.40 | 30.97 | 41.91 | a | |||||||||
2002 | 32.39 | 28.04 | 33.42 | 41.10 | 46.29 | 55.13 | 60.90 | 57.71 | 50.07 | 36.81 | 33.27 | 34.10 | 42.43 | |||||||||||||
2003 | 34.29 | 30.18 | 39.61 | 42.43 | 48.03 | 54.93 | 60.58 | 59.77 | 52.27 | 45.87 | 30.10 | 29.23 | 43.94 | |||||||||||||
2004 | 25.90 | 29.52 | 38.06 | 40.97 | 49.94 | 55.73 | 62.03 | 61.77 | 51.70 | 44.13 | 32.13 | 30.73 | a | 43.55 | ||||||||||||
2005 | 26.42 | 25.04 | 35.94 | 42.43 | 51.00 | 54.73 | 59.94 | 58.35 | 49.83 | 45.03 | 33.70 | 24.61 | 42.25 | |||||||||||||
2006 | 34.45 | 27.43 | 35.39 | 41.11 | b | 47.50 | a | 55.73 | 61.81 | 56.97 | 50.43 | 40.63 | a | 34.67 | 26.42 | 42.71 | ||||||||||
2007 | 23.23 | 32.11 | 36.87 | 40.43 | 47.16 | 53.90 | 62.83 | a | 57.23 | 50.70 | 41.58 | 32.33 | 29.45 | 42.32 | ||||||||||||
2008 | 23.90 | 32.35 | c | 33.74 | 36.73 | 49.42 | 52.30 | 59.68 | 58.19 | 50.63 | 39.97 | 35.60 | 20.94 | 41.12 | ||||||||||||
2009 | 26.84 | 28.36 | 33.06 | 39.20 | 46.97 | 56.57 | 61.10 | 60.23 | 52.43 | 40.74 | 33.40 | 19.26 | 41.51 | |||||||||||||
2010 | 33.28 | b | 33.48 | a | 34.55 | 41.73 | 44.90 | 53.67 | 59.13 | 59.10 | 53.33 | 43.68 | 31.70 | 29.43 | a | 43.16 | ||||||||||
2011 | 28.71 | 27.96 | 35.06 | 37.07 | 44.19 | 52.83 | a | 56.13 | 59.48 | 52.52 | a | 45.23 | 30.33 | 25.74 | 41.27 | |||||||||||
2012 | 25.77 | 30.62 | 35.42 | 41.69 | a | 46.19 | 52.87 | 59.87 | 58.52 | 50.43 | 42.13 | 37.00 | a | 32.19 | 42.73 | |||||||||||
2013 | 27.06 | 29.89 | a | 35.68 | 41.07 | 48.52 | 55.23 | 61.32 | 61.94 | 56.23 | 37.87 | 30.27 | 20.27 | a | 42.11 | |||||||||||
2014 | 29.90 | 28.54 | 35.39 | c | 42.00 | a | 49.39 | 54.87 | 63.29 | 62.32 | 53.40 | 47.29 | 31.43 | 30.48 | 44.03 | |||||||||||
2015 | 30.71 | 33.93 | 38.35 | 40.20 | 51.23 | 60.63 | 63.77 | 60.65 | 50.13 | 47.39 | 33.17 | 30.29 | 45.04 | |||||||||||||
2016 | 29.87 | 34.48 | 37.39 | 45.33 | 51.00 | 55.77 | 60.52 | 59.58 | 51.63 | 46.03 | 39.10 | 22.23 | 44.41 | |||||||||||||
2017 | 17.65 | 26.04 | 38.42 | 41.23 | 48.10 | 55.53 | 61.74 | 59.61 | 53.10 | 40.29 | 34.90 | 26.87 | 41.96 | |||||||||||||
2018 | 32.65 | 30.39 | 33.55 | 42.37 | 53.32 | 54.90 | a | 61.03 | 59.48 | 50.83 | 41.58 | 33.93 | 31.71 | 43.81 | ||||||||||||
2019 | 30.68 | 19.36 | 27.00 | 44.77 | 50.81 | 56.17 | 59.77 | 61.52 | 54.63 | 37.29 | 29.93 | a | 30.06 | 41.83 | ||||||||||||
2020 | 32.55 | 29.93 | 34.23 | a | 40.97 | 49.45 | 56.47 | 62.00 | 62.13 | 54.77 | 44.55 | 35.20 | 31.07 | b | 44.44 | |||||||||||
2021 | 31.86 | b | 27.27 | b | 34.47 | a | 41.30 | 48.87 | 61.00 | 64.53 | a | 61.68 | 53.25 | b | 43.77 | 39.43 | 30.23 | a | 44.81 | |||||||
2022 | 26.10 | 27.14 | 38.68 | 37.73 | 46.71 | 55.07 | 62.52 | 63.77 | 55.13 | 46.57 | a | 27.89 | b | 20.19 | 42.29 | |||||||||||
2023 | 28.17 | a | 28.54 | 32.97 | 40.07 | 53.26 | 57.37 | 62.47 | a | 62.68 | 54.13 | 43.23 | 32.50 | 33.10 | a | 44.04 | ||||||||||
2024 | 24.68 | 34.07 | 35.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.43 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.69 | 30.04 | 35.10 | 40.91 | 48.39 | 54.94 | 59.97 | 59.02 | 51.19 | 41.49 | 33.70 | 28.22 | 42.45 | |||||||||||||
S.D. | 6.28 | 3.96 | 2.34 | 2.10 | 2.25 | 2.07 | 2.07 | 2.38 | 2.32 | 2.89 | 3.59 | 4.22 | 1.42 | |||||||||||||
SKEW | -1.43 | -0.55 | -0.37 | -0.32 | 0.20 | 0.73 | 0.17 | 0.24 | -0.42 | -0.01 | -0.54 | -0.56 | -0.06 | |||||||||||||
MAX | 39.29 | 39.32 | 40.20 | 45.33 | 54.52 | 61.00 | 65.77 | 64.87 | 56.23 | 47.70 | 40.03 | 35.29 | 46.21 | |||||||||||||
MIN | 2.30 | 18.37 | 27.00 | 36.73 | 43.39 | 50.77 | 54.68 | 52.77 | 45.20 | 35.23 | 22.93 | 18.00 | 39.00 | |||||||||||||
YRS | 79 | 80 | 78 | 78 | 78 | 80 | 79 | 78 | 76 | 78 | 79 | 79 | 71 |