YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | 35.52 | h | ----- | z | 37.00 | d | 36.16 | 38.73 | d | 35.41 | d | 27.79 | a | 23.23 | i | 35.02 | g | |
1942 | 30.68 | 28.73 | f | 28.84 | f | ----- | z | 42.18 | i | 43.67 | 48.03 | 47.87 | ----- | z | ----- | z | ----- | z | ----- | z | 42.56 | h | ||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 44.37 | k | 47.06 | 48.81 | 40.20 | 31.14 | b | 30.60 | 19.42 | 36.20 | f | |||||
1973 | 12.61 | 16.67 | j | 29.09 | h | 31.90 | 36.13 | 41.79 | b | 46.96 | c | ----- | z | 34.75 | j | ----- | z | ----- | z | ----- | z | 33.88 | g | |||
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 | 49.77 | 47.42 | 42.27 | 39.71 | 27.53 | 26.90 | a | 38.93 | f | |||||
1979 | 23.10 | 13.61 | 30.32 | 32.30 | 39.52 | 45.73 | 51.06 | 50.65 | 45.90 | 41.13 | 34.00 | 26.74 | 36.17 | |||||||||||||
1980 | 18.81 | 28.24 | 29.84 | 35.88 | d | 42.52 | 48.27 | 51.45 | b | 50.48 | 44.00 | b | 39.06 | n | 34.87 | 19.11 | l | 38.44 | b | |||||||
1981 | 35.74 | d | 31.59 | f | 36.15 | k | 36.06 | l | 44.86 | i | 48.56 | e | 53.04 | e | 52.45 | i | 45.95 | i | 37.67 | p | 32.29 | m | 23.73 | p | 45.78 | i |
1982 | 16.36 | t | 24.43 | n | 30.82 | t | 32.71 | m | 39.12 | g | 46.17 | a | 49.19 | e | 47.81 | d | 45.25 | j | 37.04 | c | 27.92 | d | 30.31 | b | 39.74 | f |
1983 | 29.29 | j | 33.00 | n | 29.24 | j | 34.90 | j | 43.92 | g | 45.38 | n | 52.05 | j | 49.86 | c | 41.77 | q | 41.44 | o | 33.17 | r | 24.69 | o | 49.86 | k |
1984 | 33.00 | o | 33.83 | w | 41.38 | o | 45.17 | f | 52.54 | c | 55.38 | f | 56.14 | c | 58.77 | e | 51.90 | i | ----- | z | ----- | z | ----- | z | 55.82 | i |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.15 | r | 39.46 | f | 33.64 | i | 19.50 | f | 28.24 | b | 28.24 | k |
1986 | 30.54 | e | 26.07 | m | ----- | z | 32.12 | v | 36.40 | k | 42.35 | g | 52.43 | x | 48.43 | x | ----- | z | ----- | z | ----- | z | 31.73 | a | 31.14 | j |
1987 | 31.68 | i | ----- | 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 | 37.12 | e | 26.21 | b | 26.71 | 30.01 | i | |
1995 | 24.85 | e | 24.11 | a | 26.29 | 34.05 | i | 40.23 | e | 46.72 | e | 51.97 | 49.25 | c | 47.93 | c | 38.19 | d | 29.48 | a | 26.48 | b | 36.86 | a | ||
1996 | 17.20 | a | 23.22 | f | 27.71 | 32.14 | b | 36.50 | a | 46.37 | 51.25 | s | 50.43 | a | 43.03 | a | 37.11 | d | 28.97 | 25.48 | 34.49 | b | ||||
1997 | 25.20 | a | 33.04 | 31.25 | o | 32.48 | g | 39.84 | 48.57 | 53.13 | 53.06 | 46.29 | b | 37.45 | i | 35.60 | j | 32.27 | a | 41.42 | d | |||||
1998 | 24.77 | 34.48 | a | 30.58 | 34.65 | j | 42.10 | 46.66 | a | 50.48 | 48.76 | n | 45.07 | 38.90 | 31.36 | e | 25.62 | e | 37.00 | b | ||||||
1999 | 24.71 | 25.96 | 28.97 | 33.00 | f | 36.57 | h | 46.77 | 49.96 | f | 50.35 | e | 45.87 | 39.40 | a | 33.33 | 31.29 | 36.29 | c | |||||||
2000 | 24.63 | a | 27.84 | d | 32.19 | 33.11 | k | 38.38 | b | 45.66 | a | 51.16 | 49.26 | 43.50 | b | 38.23 | 34.72 | l | 29.48 | d | 38.03 | b | ||||
2001 | 34.24 | b | 25.86 | 29.63 | a | 33.25 | b | 38.45 | 46.85 | c | 51.26 | d | 51.19 | 46.90 | 37.20 | f | 31.67 | 27.48 | 37.89 | a | ||||||
2002 | 28.89 | c | 28.07 | 23.88 | e | 27.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.20 | h | ||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.20 | 51.88 | f | 48.38 | b | 44.33 | 39.32 | i | 27.85 | j | 30.53 | a | 42.61 | h | ||
2004 | 24.19 | 32.68 | d | 31.31 | e | 36.26 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.39 | i | |
2005 | ----- | z | ----- | z | ----- | z | 37.20 | o | 44.00 | b | 47.97 | 51.97 | b | 51.34 | b | 47.03 | a | 37.57 | a | 33.26 | c | 30.07 | d | 42.90 | d | |
2006 | 30.33 | m | 25.44 | c | 24.00 | 33.13 | 40.26 | 47.50 | 50.35 | 50.70 | a | 45.70 | 37.35 | 19.50 | 30.97 | 36.81 | a | |||||||||
2007 | 26.97 | 24.21 | 22.87 | 31.53 | 37.74 | 46.10 | a | 51.32 | 50.68 | 45.60 | 37.55 | 32.03 | 26.00 | 36.05 | ||||||||||||
2008 | 24.10 | 24.59 | 29.55 | 31.87 | 39.00 | 43.50 | 48.77 | 49.42 | 45.13 | 36.61 | 32.17 | 22.45 | 35.60 | |||||||||||||
2009 | 22.61 | 23.75 | 25.48 | 30.90 | 38.06 | 45.87 | 51.81 | 51.48 | 45.00 | 38.87 | 31.83 | 25.87 | 35.96 | |||||||||||||
2010 | 28.94 | 31.46 | 31.10 | 34.27 | 40.65 | 46.41 | a | 50.00 | 51.29 | 43.73 | 37.10 | a | 31.63 | 25.00 | 37.63 | |||||||||||
2011 | 26.74 | 22.21 | 24.45 | 32.67 | 40.26 | 46.50 | 49.52 | 49.29 | 44.03 | 38.52 | 26.20 | 29.77 | 35.85 | |||||||||||||
2012 | 23.03 | 30.66 | 28.45 | 34.00 | 39.77 | 45.77 | 49.13 | 49.52 | 45.17 | 34.45 | 29.53 | 23.39 | 36.07 | |||||||||||||
2013 | 28.39 | 31.85 | a | 25.68 | 30.27 | 39.19 | 48.63 | 51.19 | 51.71 | 46.97 | 40.68 | 28.37 | 24.81 | 37.31 | ||||||||||||
2014 | 32.00 | 20.96 | 26.84 | 33.47 | 41.84 | 45.67 | 52.00 | 51.03 | a | 47.37 | 38.35 | 32.07 | a | 29.03 | 37.55 | |||||||||||
2015 | 32.26 | 27.18 | 30.94 | 34.67 | 41.77 | 49.17 | 52.06 | 50.52 | 44.07 | 39.19 | 31.97 | 29.94 | 38.64 | |||||||||||||
2016 | 33.13 | 32.72 | 34.00 | 38.14 | a | 42.87 | a | 48.76 | a | 54.10 | 52.94 | 44.47 | 33.94 | 33.40 | 24.52 | 39.41 | ||||||||||
2017 | 26.39 | 24.18 | 22.63 | a | 33.83 | 40.68 | 47.40 | 50.10 | a | 48.00 | b | 43.40 | 36.23 | 25.20 | 29.29 | 35.61 | ||||||||||
2018 | 27.26 | 21.25 | 27.81 | 33.53 | 40.77 | a | 47.03 | a | 50.71 | 51.94 | 39.73 | 39.68 | 35.23 | 30.35 | 37.11 | |||||||||||
2019 | 28.65 | 19.70 | a | 30.10 | a | 34.03 | 42.77 | a | 48.38 | a | 53.07 | a | 48.58 | 44.77 | 36.52 | 34.90 | a | 33.13 | 37.88 | |||||||
2020 | 22.68 | 29.10 | 25.68 | 32.13 | 40.16 | 46.40 | 51.39 | 51.45 | 43.83 | 35.58 | 27.52 | a | 32.13 | 36.50 | ||||||||||||
2021 | 29.93 | a | 23.68 | 27.53 | a | 31.69 | a | 39.00 | 48.33 | 50.46 | e | 51.35 | 45.37 | 34.87 | 29.07 | 19.70 | a | 35.92 | ||||||||
2022 | 24.97 | 28.89 | 30.71 | 31.24 | a | 37.55 | 47.90 | a | 52.55 | 53.68 | 46.13 | 41.26 | 29.13 | 22.90 | 37.24 | |||||||||||
2023 | 31.74 | 26.61 | 23.81 | 33.70 | 41.48 | 47.04 | c | 51.42 | 52.24 | b | 47.37 | 40.26 | 33.90 | 32.19 | 38.48 | |||||||||||
2024 | 26.35 | 27.14 | 27.97 | 33.33 | 38.17 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.70 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.55 | 26.53 | 27.94 | 32.87 | 40.48 | 46.77 | 50.58 | 50.20 | 44.65 | 37.60 | 30.34 | 27.65 | 36.94 | |||||||||||||
S.D. | 4.89 | 4.63 | 3.02 | 1.96 | 3.01 | 1.61 | 3.04 | 3.22 | 2.17 | 2.27 | 3.43 | 3.57 | 1.15 | |||||||||||||
SKEW | -0.55 | -0.49 | -0.12 | 0.17 | 2.14 | -1.06 | -2.55 | -1.87 | -1.00 | -0.66 | -0.95 | -0.53 | 0.59 | |||||||||||||
MAX | 35.74 | 34.48 | 34.00 | 38.14 | 52.54 | 49.17 | 56.14 | 58.77 | 47.93 | 41.26 | 35.23 | 33.13 | 39.41 | |||||||||||||
MIN | 12.61 | 13.61 | 22.63 | 27.93 | 36.13 | 41.79 | 37.00 | 36.16 | 38.73 | 31.14 | 19.50 | 19.42 | 35.60 | |||||||||||||
YRS | 33 | 29 | 29 | 25 | 29 | 33 | 34 | 35 | 32 | 30 | 31 | 34 | 18 |