YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.13 | 54.61 | 54.32 | 47.57 | 39.16 | 25.83 | 20.84 | 41.35 | e | |||||||
1942 | 16.68 | 16.07 | 21.97 | 34.67 | 38.81 | 47.97 | 55.26 | 54.55 | 46.47 | 36.58 | 25.93 | 23.19 | 34.84 | |||||||||||||
1943 | 19.48 | 22.82 | 24.97 | 36.07 | 42.39 | 51.25 | b | 55.61 | 57.90 | 49.37 | 35.84 | 24.90 | 12.74 | 36.11 | ||||||||||||
1944 | 8.90 | 23.62 | 25.74 | 33.37 | 42.94 | 51.60 | 57.06 | 57.32 | 49.57 | 40.65 | 27.73 | 20.61 | 36.59 | |||||||||||||
1945 | 19.35 | 26.43 | 26.30 | a | 31.77 | 44.55 | 48.90 | 58.58 | 59.29 | 50.13 | 40.23 | 25.50 | 16.07 | b | 37.26 | |||||||||||
1946 | 17.58 | 20.86 | 28.23 | a | 39.13 | 41.39 | 53.38 | a | 58.77 | 57.35 | 50.07 | 37.19 | 24.76 | a | 21.52 | 37.52 | ||||||||||
1947 | 13.68 | 22.14 | 26.26 | 31.73 | 44.87 | 49.53 | 58.52 | 57.23 | 49.83 | 41.32 | 20.63 | 17.03 | a | 36.07 | ||||||||||||
1948 | 16.26 | 21.03 | 22.58 | 37.30 | 46.00 | 53.07 | 57.94 | 56.45 | 50.27 | 37.55 | 21.83 | 21.74 | 36.83 | |||||||||||||
1949 | 14.20 | a | 20.11 | 27.23 | 35.00 | 44.10 | 51.10 | a | 58.06 | 54.52 | 50.60 | 36.10 | 28.97 | 14.77 | 36.23 | |||||||||||
1950 | 19.77 | 24.96 | 25.65 | 34.97 | 40.94 | 52.80 | 56.10 | 53.13 | 47.17 | 42.61 | 26.23 | 22.06 | 37.20 | |||||||||||||
1951 | 17.26 | 20.71 | 24.68 | 32.03 | 44.03 | 50.37 | 60.45 | 56.97 | 48.90 | 37.84 | 22.67 | 18.77 | 36.22 | |||||||||||||
1952 | 22.45 | 20.83 | 23.23 | 34.47 | 43.90 | 55.57 | 56.94 | 57.65 | 49.47 | 37.45 | 22.13 | 15.55 | 36.64 | |||||||||||||
1953 | 22.84 | 18.79 | 29.32 | 33.47 | 39.74 | 54.70 | 59.29 | 55.90 | 48.60 | 37.84 | 28.30 | 14.87 | 36.97 | |||||||||||||
1954 | 20.58 | 24.96 | 25.94 | 37.27 | 44.65 | 52.37 | 59.94 | 55.68 | 51.60 | 40.68 | 28.00 | 18.19 | 38.32 | |||||||||||||
1955 | 14.39 | 16.14 | 25.10 | 32.40 | 42.94 | 49.57 | 57.94 | 58.03 | 51.20 | 39.29 | 25.00 | 22.97 | 36.25 | |||||||||||||
1956 | 24.13 | 17.52 | 26.68 | 32.43 | 45.33 | a | 56.60 | 57.48 | 55.42 | 51.07 | 39.90 | 21.33 | 16.77 | 37.06 | ||||||||||||
1957 | 24.10 | 30.61 | 28.87 | 32.37 | 42.06 | 52.07 | 59.58 | 57.13 | 47.70 | 40.42 | 23.00 | 22.77 | 38.39 | |||||||||||||
1958 | 17.74 | 26.32 | 26.32 | 33.60 | 46.45 | 54.91 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.09 | g | |||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 24.60 | 16.23 | 20.41 | j | ||
1998 | 22.16 | 22.25 | 26.03 | a | 29.93 | 39.48 | 48.13 | 57.24 | b | 56.10 | a | 51.83 | 38.45 | 28.70 | 19.84 | 36.68 | ||||||||||
1999 | 20.79 | b | 22.11 | 29.16 | 32.13 | 40.81 | 49.00 | a | 57.50 | a | 55.55 | 46.63 | 35.58 | 27.93 | 15.58 | 36.06 | ||||||||||
2000 | 20.60 | a | 25.10 | 26.58 | 35.87 | 44.68 | 53.67 | 56.83 | a | 56.94 | 49.80 | 38.55 | 22.07 | 19.39 | 37.51 | |||||||||||
2001 | 16.16 | 24.43 | 28.06 | 32.81 | d | 45.03 | b | 51.63 | 58.29 | 55.32 | 47.83 | 37.06 | 28.00 | b | 16.84 | 36.79 | ||||||||||
2002 | 18.58 | 17.11 | 22.48 | 38.25 | b | 43.23 | 53.17 | a | 57.77 | 55.77 | 49.50 | 37.19 | 26.83 | 21.35 | 36.77 | |||||||||||
2003 | 23.77 | 23.68 | 27.52 | 33.13 | 43.00 | 50.33 | 60.42 | 58.16 | 49.03 | 42.13 | 27.10 | 20.19 | 38.21 | |||||||||||||
2004 | 21.10 | 20.00 | 32.26 | 34.60 | 43.71 | 51.63 | 55.33 | a | 54.29 | 48.10 | 38.42 | 27.61 | b | 20.16 | 37.27 | |||||||||||
2005 | 27.32 | 28.61 | 26.35 | 34.87 | 43.71 | 50.37 | 57.23 | 55.77 | 49.77 | 39.58 | 27.10 | 19.10 | 38.31 | |||||||||||||
2006 | 18.94 | 19.32 | 28.84 | 36.17 | 45.61 | 54.33 | 59.61 | 57.61 | 44.87 | 37.19 | 26.73 | 18.68 | 37.33 | |||||||||||||
2007 | 14.52 | 22.93 | 29.13 | 34.57 | 44.06 | 51.87 | 57.55 | 58.35 | 51.90 | 37.77 | 28.23 | 20.39 | 37.61 | |||||||||||||
2008 | 16.42 | 25.00 | 25.81 | 30.53 | 41.97 | 51.20 | 57.13 | 56.58 | 48.43 | 38.35 | 27.80 | 20.84 | 36.67 | |||||||||||||
2009 | 22.68 | 23.57 | 29.55 | 33.53 | 47.23 | 51.27 | 59.03 | 55.00 | 48.50 | 36.42 | 27.73 | 17.00 | 37.63 | |||||||||||||
2010 | 19.00 | 23.57 | 27.84 | 33.60 | 41.74 | 52.93 | 59.71 | 56.81 | 51.50 | 40.42 | 23.83 | 23.61 | 37.88 | |||||||||||||
2011 | 18.06 | 14.93 | a | 28.39 | 36.13 | 38.87 | 52.23 | 60.77 | 60.06 | 49.87 | 38.32 | 26.40 | 16.65 | 36.72 | ||||||||||||
2012 | 23.90 | 22.04 | a | 27.48 | 38.00 | 44.42 | 56.50 | 58.87 | 58.39 | 49.80 | 36.94 | 26.68 | b | 17.73 | a | 38.40 | ||||||||||
2013 | 13.87 | 20.29 | 27.03 | 34.07 | 42.74 | 55.17 | 58.84 | 57.90 | 51.60 | 35.23 | 27.43 | 19.48 | 36.97 | |||||||||||||
2014 | 19.06 | 24.46 | 28.03 | 32.37 | 40.03 | 53.27 | 58.71 | 54.03 | 52.60 | 41.23 | 24.60 | 22.68 | 37.59 | |||||||||||||
2015 | 21.84 | 23.54 | 30.13 | a | 33.97 | 41.94 | 54.67 | 57.42 | 56.77 | 51.77 | 42.62 | b | 27.33 | 21.77 | 38.65 | |||||||||||
2016 | 20.35 | 24.07 | 28.03 | 34.70 | 41.90 | 54.60 | 60.00 | 54.81 | 49.63 | 40.26 | 29.77 | 21.48 | 38.30 | |||||||||||||
2017 | 23.58 | 27.21 | 31.48 | 35.40 | 42.03 | 54.10 | 59.45 | 56.39 | 49.83 | 38.03 | 31.73 | 20.26 | 39.13 | |||||||||||||
2018 | 18.13 | 23.36 | 27.81 | 35.70 | 45.03 | 55.27 | 59.39 | 56.55 | 50.07 | 39.19 | 25.20 | 19.20 | a | 37.91 | ||||||||||||
2019 | 19.81 | 22.11 | 29.94 | 34.69 | a | 39.26 | 51.10 | 57.87 | 57.16 | 51.43 | 32.68 | 24.73 | 22.87 | 36.97 | ||||||||||||
2020 | 20.65 | 22.55 | 31.55 | 35.33 | 45.19 | 52.47 | 59.32 | 57.52 | 45.90 | 35.90 | 30.43 | 17.74 | 37.88 | |||||||||||||
2021 | 19.29 | 19.36 | 26.71 | 34.10 | 44.52 | 55.73 | 59.03 | 56.81 | 52.00 | 37.06 | 29.23 | 24.45 | 38.19 | |||||||||||||
2022 | 19.84 | 17.18 | 26.42 | 35.50 | 44.55 | 55.50 | 59.23 | 56.87 | 50.30 | 37.48 | 22.67 | 19.58 | 37.09 | |||||||||||||
2023 | 20.77 | 21.46 | 26.52 | 31.30 | 43.90 | 48.67 | 60.84 | 59.48 | 51.83 | 39.52 | 28.87 | 24.81 | 38.16 | |||||||||||||
2024 | 21.97 | 26.76 | 29.58 | 32.53 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.10 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.38 | 22.29 | 27.22 | 34.26 | 43.11 | 52.25 | 58.27 | 56.60 | 49.63 | 38.42 | 26.18 | 19.51 | 37.27 | |||||||||||||
S.D. | 3.51 | 3.40 | 2.31 | 2.05 | 2.11 | 2.43 | 1.52 | 1.53 | 1.80 | 2.12 | 2.58 | 2.85 | 0.88 | |||||||||||||
SKEW | -0.47 | -0.06 | -0.15 | 0.21 | -0.40 | -0.13 | -0.45 | -0.04 | -0.60 | -0.05 | -0.30 | -0.22 | -0.20 | |||||||||||||
MAX | 27.32 | 30.61 | 32.26 | 39.13 | 47.23 | 56.60 | 60.84 | 60.06 | 52.60 | 42.62 | 31.73 | 24.81 | 39.13 | |||||||||||||
MIN | 8.90 | 14.93 | 21.97 | 29.93 | 38.81 | 47.13 | 54.61 | 53.13 | 44.87 | 32.68 | 20.63 | 12.74 | 34.84 | |||||||||||||
YRS | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 44 | 44 | 42 |