YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.84 | 26.43 | 21.68 | 28.98 | i | |||
1942 | 15.06 | 18.68 | 23.97 | 37.73 | 39.87 | 48.13 | 57.16 | 55.68 | 44.53 | 37.35 | 24.00 | 22.06 | 35.35 | |||||||||||||
1943 | 19.52 | 23.25 | 27.48 | 36.93 | 41.13 | 50.00 | 58.29 | 59.65 | 47.73 | 35.74 | 22.03 | 23.26 | 37.08 | |||||||||||||
1944 | 12.81 | 24.00 | 24.71 | 32.87 | 42.19 | 47.93 | 57.06 | 55.16 | 47.37 | 40.13 | ----- | z | 19.42 | 36.70 | a | |||||||||||
1945 | 19.61 | 25.32 | 26.61 | 31.27 | 42.74 | 45.17 | 57.68 | 58.90 | 44.93 | 36.71 | 19.53 | 11.42 | 34.99 | |||||||||||||
1946 | 13.94 | 16.64 | 27.19 | 38.40 | 40.94 | 49.00 | 58.16 | 56.61 | 45.67 | 31.52 | 23.23 | 18.90 | 35.02 | |||||||||||||
1947 | 8.74 | 20.36 | 24.06 | 31.23 | 43.23 | 45.83 | 57.23 | ----- | z | 48.47 | 38.42 | 22.73 | 16.90 | 32.47 | a | |||||||||||
1948 | 14.90 | 21.31 | 23.61 | 35.97 | 43.61 | 50.53 | 55.29 | 54.65 | 46.43 | 36.10 | 20.67 | 20.16 | 35.27 | |||||||||||||
1949 | 14.32 | 16.36 | 28.00 | 35.73 | 42.87 | 50.80 | 58.19 | 51.97 | 47.07 | 32.74 | 24.23 | 16.35 | 34.89 | |||||||||||||
1950 | 16.65 | 25.61 | 26.26 | 35.00 | 39.39 | 47.93 | 58.48 | 54.10 | 47.30 | 40.39 | 24.40 | 19.71 | 36.27 | |||||||||||||
1951 | 15.87 | a | 22.32 | 25.97 | 34.40 | 44.32 | 46.83 | 60.35 | 57.81 | 44.70 | 35.45 | 23.87 | 14.84 | 35.56 | ||||||||||||
1952 | 21.58 | 21.86 | 24.50 | a | 37.37 | 44.58 | 52.80 | 57.26 | 60.35 | 49.17 | 35.80 | a | 23.33 | 16.32 | 37.08 | |||||||||||
1953 | 22.00 | 20.74 | a | 28.39 | 35.13 | 41.87 | 55.13 | 62.55 | 57.81 | 50.53 | 38.90 | 28.63 | 12.00 | 37.81 | ||||||||||||
1954 | 21.97 | 24.61 | 26.71 | 38.97 | 47.55 | 53.07 | 62.19 | 57.87 | 52.10 | 40.48 | 27.43 | 17.48 | 39.20 | |||||||||||||
1955 | 14.29 | 13.86 | 26.61 | 32.67 | 42.42 | 51.10 | 59.71 | 61.19 | 50.77 | 38.71 | 25.83 | 23.77 | 36.74 | |||||||||||||
1956 | 25.52 | 18.69 | 25.26 | 35.03 | 45.29 | 56.00 | 59.42 | 55.87 | 49.43 | 39.35 | 18.27 | 14.23 | 36.86 | |||||||||||||
1957 | 24.16 | 30.18 | 30.19 | 35.07 | 43.74 | 52.83 | 60.13 | 59.16 | 47.30 | 41.65 | 25.57 | 21.77 | 39.31 | |||||||||||||
1958 | 17.10 | 27.61 | 27.81 | 33.70 | 46.65 | 54.90 | 58.23 | 61.00 | 51.70 | 40.39 | 26.63 | 20.58 | 38.86 | |||||||||||||
1959 | 19.19 | 23.14 | 25.74 | 37.10 | 46.52 | 57.97 | 61.52 | 60.48 | 49.63 | 38.42 | 25.13 | 22.26 | 38.93 | |||||||||||||
1960 | 15.35 | 20.86 | 30.71 | 35.83 | 43.32 | 54.93 | 61.48 | 59.97 | 54.27 | 39.35 | 28.77 | 17.48 | 38.53 | |||||||||||||
1961 | 12.06 | 25.89 | 30.81 | 35.10 | 46.29 | 57.73 | 62.16 | 61.48 | 48.37 | 38.68 | 28.50 | 7.97 | 37.92 | |||||||||||||
1962 | 10.10 | 25.82 | 26.48 | 39.77 | 44.39 | 54.40 | 61.81 | 59.65 | 53.93 | 42.94 | 32.93 | 22.35 | 39.55 | |||||||||||||
1963 | 10.42 | 25.46 | 29.84 | 35.90 | 48.45 | 53.97 | 64.23 | 62.26 | 55.90 | 45.94 | 31.23 | 17.71 | 40.11 | |||||||||||||
1964 | 14.90 | 17.41 | 25.61 | 35.87 | 47.58 | 54.83 | 65.29 | 59.61 | 52.57 | 41.03 | 27.77 | 20.45 | 38.58 | |||||||||||||
1965 | 24.61 | 21.89 | 28.13 | 37.30 | 44.06 | 51.03 | a | 62.19 | 58.48 | 49.53 | 39.48 | 33.47 | 25.06 | 39.60 | ||||||||||||
1966 | 17.35 | 19.04 | a | 29.48 | 36.57 | 48.48 | 55.20 | 65.06 | 60.45 | 52.73 | 39.39 | 31.93 | 20.45 | 39.68 | ||||||||||||
1967 | 14.55 | 24.11 | 32.77 | 35.57 | 43.58 | 53.93 | 64.06 | 59.74 | 52.53 | 39.39 | 29.70 | 14.03 | 38.66 | |||||||||||||
1968 | 10.03 | a | 29.45 | 30.81 | 34.23 | 44.68 | 53.73 | 60.90 | 57.26 | 48.60 | 39.00 | 26.90 | 14.77 | 37.53 | ||||||||||||
1969 | 22.97 | 24.11 | 25.32 | 36.63 | 47.71 | 52.50 | 63.10 | 63.45 | 53.40 | 36.68 | 26.87 | 23.39 | 39.68 | |||||||||||||
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 | 22.03 | 23.79 | 26.55 | 31.80 | 41.68 | 48.07 | 62.97 | 59.97 | 53.70 | 39.48 | 28.60 | 19.00 | 38.14 | |||||||||||||
1999 | 21.90 | b | 22.25 | 30.29 | 33.73 | 43.13 | 49.93 | 61.84 | 59.87 | 47.23 | 33.84 | 26.69 | a | 14.13 | 37.07 | |||||||||||
2000 | 22.87 | 26.79 | 30.19 | 38.20 | 44.10 | 56.03 | 60.23 | 61.58 | 50.90 | 39.35 | 23.07 | 21.13 | 39.54 | |||||||||||||
2001 | 17.63 | a | 23.68 | 31.52 | b | 37.23 | 45.45 | 52.77 | 62.23 | 58.77 | a | 50.96 | b | 39.03 | a | 30.77 | 18.58 | 39.05 | ||||||||
2002 | 18.42 | 16.71 | 24.03 | 37.63 | 43.10 | 54.50 | 62.81 | 57.10 | 51.23 | 37.23 | 26.47 | 20.39 | 37.47 | |||||||||||||
2003 | 23.87 | 23.71 | 28.48 | 34.33 | 45.35 | 52.00 | 62.00 | 61.39 | 48.53 | 42.00 | 29.13 | 22.67 | a | 39.46 | ||||||||||||
2004 | 20.77 | 21.38 | 33.61 | 37.10 | 42.42 | 51.23 | 58.23 | 56.77 | 49.50 | b | 39.71 | 29.27 | 20.84 | 38.40 | ||||||||||||
2005 | 27.94 | 29.64 | 29.39 | 34.90 | 43.48 | 49.57 | 60.77 | 58.35 | 52.03 | 40.97 | 26.47 | 15.66 | b | 39.10 | ||||||||||||
2006 | 17.74 | 19.11 | 29.26 | 36.00 | a | 44.52 | 55.70 | 63.90 | 60.16 | 45.90 | 38.16 | 26.87 | 18.71 | 38.00 | ||||||||||||
2007 | 15.65 | 25.11 | 30.58 | 36.67 | 45.84 | 53.83 | 62.84 | 61.81 | 51.70 | 36.19 | 27.27 | 19.71 | 38.93 | |||||||||||||
2008 | 12.61 | 24.07 | 26.16 | 31.57 | 40.97 | 50.93 | 61.81 | 60.23 | 50.10 | 37.58 | 29.20 | 21.23 | 37.20 | |||||||||||||
2009 | 21.35 | 24.11 | 29.65 | 33.70 | 47.84 | 53.40 | 61.97 | 56.77 | 51.13 | 35.06 | 27.47 | 15.45 | 38.16 | |||||||||||||
2010 | 16.23 | 24.82 | 27.35 | 34.93 | 39.65 | 53.13 | 62.42 | 58.65 | 50.17 | 40.23 | 23.57 | 26.58 | 38.14 | |||||||||||||
2011 | 12.81 | 19.25 | 30.48 | 35.73 | 41.32 | 50.81 | c | 62.23 | 61.81 | 51.71 | b | 38.16 | 27.70 | 19.90 | 37.66 | |||||||||||
2012 | 18.03 | 23.75 | a | 28.48 | 36.93 | 43.74 | 54.67 | 63.34 | b | 62.06 | 51.00 | 36.00 | 27.03 | 19.65 | 38.72 | |||||||||||
2013 | 11.26 | 18.89 | 27.94 | 34.30 | 43.29 | 52.70 | 63.97 | 60.55 | 53.97 | 34.61 | 27.73 | 16.10 | 37.11 | |||||||||||||
2014 | 17.13 | 23.82 | 29.03 | 33.67 | 42.10 | 50.93 | 62.81 | 57.42 | 53.57 | 40.77 | 26.27 | 24.35 | 38.49 | |||||||||||||
2015 | 22.84 | 26.43 | 32.16 | 35.10 | 44.19 | 54.50 | 58.52 | 58.77 | 51.17 | 43.71 | 26.33 | 18.52 | 39.35 | |||||||||||||
2016 | 18.90 | 21.93 | 28.00 | 35.07 | 43.39 | 58.63 | 60.19 | 58.61 | 49.40 | 40.81 | 31.80 | 22.84 | 39.13 | |||||||||||||
2017 | 24.68 | 29.71 | 31.42 | 34.07 | 41.39 | 53.80 | 61.87 | 57.65 | 50.30 | 35.90 | 28.87 | 16.52 | 38.85 | |||||||||||||
2018 | 17.35 | 22.68 | 26.61 | 37.33 | 44.71 | 52.97 | 63.45 | 59.52 | 51.27 | 40.65 | 20.33 | 20.58 | 38.12 | |||||||||||||
2019 | 19.00 | 21.25 | 32.61 | 37.73 | 41.00 | 51.43 | 60.71 | 58.87 | 53.00 | 30.32 | 24.54 | b | 22.69 | b | 37.76 | |||||||||||
2020 | 20.32 | 21.45 | 31.97 | 35.73 | 44.61 | 55.17 | 61.19 | 62.32 | 49.13 | 34.97 | 28.17 | 13.61 | 38.22 | |||||||||||||
2021 | 18.77 | 23.57 | 28.77 | a | 37.40 | 44.55 | 57.00 | 65.61 | 59.74 | 51.50 | 39.29 | 28.20 | 23.94 | 39.86 | ||||||||||||
2022 | 17.81 | 18.54 | 28.58 | 35.83 | 44.48 | 56.20 | 64.97 | 63.03 | 56.70 | 39.06 | 22.00 | 20.77 | 39.00 | |||||||||||||
2023 | 23.39 | 18.89 | 28.16 | 33.50 | 45.06 | 48.97 | 61.10 | 60.65 | 51.37 | 38.42 | 26.64 | e | 23.03 | 38.26 | ||||||||||||
2024 | 22.59 | b | 26.59 | 31.39 | 34.18 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.85 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.06 | 22.74 | 28.29 | 35.51 | 43.87 | 52.54 | 61.17 | 59.11 | 50.26 | 38.37 | 26.49 | 19.15 | 38.04 | |||||||||||||
S.D. | 4.49 | 3.60 | 2.52 | 1.93 | 2.22 | 3.10 | 2.43 | 2.36 | 2.78 | 2.87 | 3.28 | 3.77 | 1.38 | |||||||||||||
SKEW | -0.07 | -0.09 | 0.05 | -0.29 | 0.17 | -0.34 | -0.33 | -0.66 | -0.10 | -0.38 | -0.26 | -0.59 | -0.82 | |||||||||||||
MAX | 27.94 | 30.18 | 33.61 | 39.77 | 48.48 | 58.63 | 65.61 | 63.45 | 56.70 | 45.94 | 33.47 | 26.58 | 40.11 | |||||||||||||
MIN | 8.74 | 13.86 | 23.61 | 31.23 | 39.39 | 45.17 | 55.29 | 51.97 | 44.53 | 30.32 | 18.27 | 7.97 | 34.89 | |||||||||||||
YRS | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 53 | 54 | 55 | 54 | 55 | 52 |