YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 42.25 | c | 50.27 | 55.00 | 51.87 | 48.67 | 38.48 | 22.47 | 22.94 | 41.49 | d | |||||||
1941 | 22.87 | 24.61 | 30.00 | 35.77 | 41.61 | 48.57 | 57.48 | 51.39 | 43.07 | 35.55 | 29.13 | 24.81 | 37.07 | |||||||||||||
1942 | 16.00 | 23.79 | 26.42 | 36.43 | 41.90 | 47.47 | 55.45 | 55.61 | 46.33 | 36.97 | 25.80 | 20.03 | 36.02 | |||||||||||||
1943 | 8.97 | 25.14 | 26.10 | 36.50 | 41.29 | 46.27 | 55.58 | 52.94 | 47.80 | 39.61 | 30.67 | 22.35 | 36.10 | |||||||||||||
1944 | 18.39 | 26.17 | 28.10 | 35.73 | 42.97 | 50.07 | 56.26 | 54.00 | 48.03 | 39.03 | 28.83 | 19.87 | 37.29 | |||||||||||||
1945 | 26.29 | 27.50 | 29.39 | 34.33 | 43.48 | 47.87 | 55.19 | 53.65 | 43.23 | 36.84 | 24.77 | 23.84 | 37.20 | |||||||||||||
1946 | 21.03 | 22.61 | 29.90 | 34.13 | 43.23 | a | 46.10 | 54.16 | 52.97 | 45.03 | 33.35 | 22.37 | 24.00 | 35.74 | ||||||||||||
1947 | 16.26 | 24.04 | 31.03 | 35.93 | 46.23 | 49.03 | 53.77 | 51.74 | 46.67 | 38.39 | 30.40 | 25.13 | a | 37.39 | ||||||||||||
1948 | 16.03 | 18.31 | 25.90 | 31.73 | 41.10 | 52.33 | 50.71 | 52.06 | 42.47 | 31.35 | 26.83 | 10.10 | 33.24 | |||||||||||||
1949 | -4.97 | 12.21 | 29.06 | 33.53 | 44.00 | 46.83 | 52.74 | 52.29 | 45.13 | 32.71 | 31.20 | 21.94 | 33.06 | |||||||||||||
1950 | -4.65 | 16.68 | 27.39 | 30.47 | 39.17 | g | 47.90 | 54.42 | 54.00 | 44.03 | 35.29 | 26.93 | 27.48 | 32.72 | a | |||||||||||
1951 | 15.48 | 18.25 | 23.00 | 32.07 | 41.35 | 50.40 | 54.61 | 54.13 | 44.57 | 35.65 | 26.50 | 14.42 | 34.20 | |||||||||||||
1952 | 9.03 | 21.66 | 27.45 | 33.63 | 41.90 | 47.60 | 52.58 | 52.94 | 46.53 | 38.00 | 21.73 | 25.19 | 34.85 | |||||||||||||
1953 | 27.74 | 27.75 | 29.03 | 34.20 | 40.16 | 45.23 | 53.81 | 52.77 | 44.63 | 36.35 | 29.63 | 26.81 | 37.34 | |||||||||||||
1954 | 14.42 | 24.64 | 23.87 | 32.23 | 40.94 | 45.30 | 50.87 | 51.81 | 45.37 | 32.48 | 32.30 | 20.87 | 34.59 | |||||||||||||
1955 | 21.48 | 22.14 | 21.77 | 29.27 | 39.32 | 48.53 | 51.61 | 50.61 | 44.07 | 35.71 | 18.60 | 11.42 | 32.88 | |||||||||||||
1956 | 13.58 | 8.69 | 24.23 | 34.40 | 44.29 | 46.53 | 55.16 | 53.81 | 44.37 | 34.58 | 26.10 | 23.42 | 34.10 | |||||||||||||
1957 | 2.35 | 18.39 | 29.48 | 36.90 | 47.32 | 50.60 | 52.10 | 50.35 | 46.80 | 36.42 | 24.90 | 26.03 | 35.14 | |||||||||||||
1958 | 25.94 | 32.68 | 27.42 | 34.47 | 46.48 | 55.07 | 58.84 | 57.71 | 44.73 | 35.29 | 26.60 | 26.32 | 39.30 | |||||||||||||
1959 | 22.61 | 21.46 | 28.71 | 34.77 | 38.84 | 48.73 | 52.71 | 52.00 | 43.73 | 36.52 | 21.20 | o | ----- | z | 38.01 | b | ||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.68 | 47.77 | 32.28 | b | 29.80 | 20.58 | 36.82 | g | ||||
1999 | 26.03 | 26.46 | 27.19 | 30.47 | 38.35 | 47.29 | b | 50.26 | 53.77 | 39.90 | 31.10 | b | 31.90 | 26.39 | h | 36.61 | a | |||||||||
2000 | 19.44 | d | 24.38 | 28.52 | 35.17 | 41.87 | 47.79 | b | 52.58 | 52.61 | 42.87 | 33.48 | 20.30 | 18.35 | 34.78 | |||||||||||
2001 | 20.87 | 19.46 | 30.58 | 33.07 | 40.52 | 46.43 | 54.63 | a | 54.20 | a | 45.70 | 34.39 | 28.40 | 23.68 | 35.99 | |||||||||||
2002 | 25.10 | 24.79 | 26.71 | 34.07 | 40.84 | 49.17 | 54.97 | 51.34 | b | 43.20 | 30.87 | 25.87 | 29.45 | 36.36 | ||||||||||||
2003 | 29.06 | 26.21 | 31.77 | 34.40 | 41.13 | 50.97 | 55.68 | 53.90 | 47.23 | 38.52 | 21.00 | 21.19 | 37.59 | |||||||||||||
2004 | 23.03 | 27.07 | 34.29 | 36.60 | 45.42 | 51.47 | 59.03 | 59.74 | 47.83 | 39.74 | 29.20 | 29.00 | 40.20 | |||||||||||||
2005 | 23.58 | 23.04 | 33.26 | 37.03 | 46.83 | b | 50.00 | 56.32 | 55.55 | 45.93 | 38.74 | 29.28 | a | 22.26 | 38.48 | |||||||||||
2006 | 29.97 | 24.79 | 30.32 | 37.03 | a | 44.00 | 52.50 | 58.97 | 54.61 | 46.80 | 37.45 | 28.63 | 18.90 | a | 38.66 | |||||||||||
2007 | 20.00 | 29.50 | 33.06 | 36.70 | 44.06 | 49.83 | 60.06 | 54.03 | 47.30 | 35.19 | 27.00 | 23.35 | 38.34 | |||||||||||||
2008 | 15.71 | 28.79 | 28.52 | 31.57 | 46.45 | 49.50 | 56.29 | 53.71 | 44.50 | 36.45 | 32.47 | 18.00 | 36.83 | |||||||||||||
2009 | 24.03 | 25.79 | 28.81 | 35.33 | 43.13 | 53.80 | 57.35 | 57.26 | 47.07 | 36.61 | 29.73 | 17.77 | 38.06 | |||||||||||||
2010 | 29.84 | 32.21 | 30.97 | 36.20 | 41.48 | b | 49.90 | 54.84 | 54.90 | 48.63 | 38.19 | 25.90 | 23.32 | 38.87 | ||||||||||||
2011 | 24.10 | 24.04 | 31.19 | 32.63 | 41.61 | 49.83 | 53.16 | 56.42 | 47.30 | 39.32 | 25.93 | 21.00 | 37.21 | |||||||||||||
2012 | 19.68 | 27.89 | a | 30.39 | 37.13 | 43.35 | 49.07 | 56.97 | 55.39 | 46.80 | 36.90 | 33.47 | 24.68 | 38.48 | ||||||||||||
2013 | 22.32 | 29.04 | 31.13 | 37.47 | 44.74 | 52.13 | 59.81 | 58.03 | 51.59 | a | 32.78 | d | 27.07 | 21.71 | 38.98 | |||||||||||
2014 | 27.32 | 24.00 | 30.16 | 36.17 | 44.81 | 52.07 | 59.90 | b | 58.29 | 47.37 | 43.52 | 27.83 | 28.87 | 40.02 | ||||||||||||
2015 | 28.71 | 32.68 | 34.39 | 34.83 | 48.19 | 57.27 | 60.26 | 56.81 | 43.37 | 40.44 | d | 26.77 | 21.81 | 40.46 | ||||||||||||
2016 | 24.84 | 28.07 | 32.65 | 42.26 | c | 47.00 | 50.77 | 56.45 | 55.19 | 45.93 | 40.19 | 35.37 | 16.74 | 39.62 | ||||||||||||
2017 | 13.29 | 18.86 | 32.00 | 37.03 | 43.74 | 50.50 | 57.97 | 56.81 | 47.87 | 33.45 | 30.25 | f | 23.97 | b | 37.77 | a | ||||||||||
2018 | 29.71 | 27.86 | 30.10 | 36.37 | 50.10 | 49.87 | 56.10 | 55.52 | 45.27 | 35.77 | 29.77 | 27.84 | 39.52 | |||||||||||||
2019 | 26.74 | 15.25 | 23.39 | 39.30 | 47.90 | 51.07 | 56.42 | 56.48 | 49.73 | 31.23 | 25.64 | b | 27.52 | 37.56 | ||||||||||||
2020 | 26.48 | 26.90 | 27.90 | 36.17 | 44.48 | 52.10 | 56.29 | 56.35 | 50.10 | 40.45 | 27.69 | a | 26.26 | 39.26 | ||||||||||||
2021 | 29.45 | 26.14 | 29.23 | 34.87 | 43.19 | 55.47 | 62.58 | 57.06 | 46.93 | 35.90 | 32.17 | 23.10 | 39.67 | |||||||||||||
2022 | 19.74 | 26.32 | 33.84 | 32.60 | 41.55 | 50.77 | 58.68 | 59.19 | 49.83 | 40.90 | 23.31 | a | 14.29 | 37.59 | ||||||||||||
2023 | 27.13 | 25.75 | 28.16 | 34.37 | 49.68 | 52.80 | 58.65 | 58.26 | 49.37 | 38.45 | 29.00 | 31.23 | 40.24 | |||||||||||||
2024 | 23.42 | 30.45 | 30.35 | 37.44 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.07 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.41 | 24.28 | 29.05 | 34.89 | 43.48 | 49.85 | 55.72 | 54.52 | 46.12 | 36.32 | 27.48 | 22.54 | 37.21 | |||||||||||||
S.D. | 8.29 | 5.06 | 2.97 | 2.42 | 2.81 | 2.66 | 2.83 | 2.36 | 2.34 | 2.96 | 3.62 | 4.63 | 2.13 | |||||||||||||
SKEW | -1.43 | -0.91 | -0.41 | 0.14 | 0.48 | 0.52 | 0.14 | 0.33 | -0.08 | -0.01 | -0.31 | -0.66 | -0.39 | |||||||||||||
MAX | 29.97 | 32.68 | 34.39 | 42.26 | 50.10 | 57.27 | 62.58 | 59.74 | 51.59 | 43.52 | 35.37 | 31.23 | 40.46 | |||||||||||||
MIN | -4.97 | 8.69 | 21.77 | 29.27 | 38.35 | 45.23 | 50.26 | 50.35 | 39.90 | 30.87 | 18.60 | 10.10 | 32.88 | |||||||||||||
YRS | 45 | 45 | 45 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 44 | 44 | 40 |