YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | 58.65 | h | 61.90 | 62.19 | d | 69.57 | a | 62.48 | e | 48.00 | d | 38.17 | a | 32.45 | i | 57.05 | f | |
1942 | 38.52 | 39.55 | f | 39.96 | f | ----- | z | 65.71 | g | 65.20 | 67.00 | a | 64.42 | ----- | z | ----- | z | ----- | z | ----- | z | 58.78 | 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 | 57.68 | k | 70.61 | 63.70 | a | 55.67 | 45.24 | b | 40.07 | 30.65 | 50.99 | f | ||||
1973 | 29.71 | 35.72 | j | 42.61 | h | 46.53 | 52.81 | 58.36 | b | 59.93 | d | ----- | z | 60.35 | j | ----- | z | ----- | z | ----- | z | 49.47 | 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 | 60.52 | 66.52 | 57.87 | 49.29 | 37.00 | 34.87 | 51.01 | f | ||||||
1979 | 32.61 | 24.43 | 42.13 | 50.17 | 53.10 | a | 57.17 | a | 64.16 | 67.65 | 57.90 | a | 51.42 | 43.07 | 33.48 | 48.11 | ||||||||||
1980 | 28.52 | 40.24 | 41.61 | 48.96 | d | 56.35 | 62.90 | 61.69 | b | 64.68 | 55.40 | 48.47 | n | 42.10 | 27.32 | l | 50.25 | b | ||||||||
1981 | 42.30 | d | 37.36 | f | 46.05 | l | 45.22 | l | 57.14 | i | 61.00 | f | 62.54 | e | 63.91 | i | 56.67 | i | 46.60 | p | 39.41 | m | 31.73 | p | 52.42 | j |
1982 | 26.55 | t | 31.93 | n | 39.60 | u | 43.94 | m | 50.38 | g | 63.08 | e | 62.56 | f | 60.93 | d | 56.94 | l | 47.78 | h | 36.54 | d | 37.38 | b | 49.48 | h |
1983 | 35.95 | k | 41.43 | n | 45.57 | j | 54.00 | j | 60.91 | h | 64.19 | n | 66.95 | k | 63.78 | d | 59.60 | t | ----- | z | ----- | z | 30.88 | w | 63.78 | k |
1984 | 39.12 | o | 41.50 | w | 55.50 | o | 53.42 | f | 61.00 | d | 62.95 | k | 65.21 | c | 70.40 | f | 58.10 | j | ----- | z | ----- | z | ----- | z | 63.11 | j |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.90 | u | 60.57 | i | 45.14 | i | 31.57 | g | 37.25 | c | 37.25 | k |
1986 | 38.12 | e | 40.40 | m | ----- | z | 46.33 | u | 53.63 | l | 61.77 | h | 63.57 | x | 59.00 | x | ----- | z | ----- | z | ----- | z | 39.62 | b | 38.87 | j |
1987 | 39.70 | k | ----- | 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 | 47.27 | e | 33.87 | 33.13 | 38.09 | i | ||
1995 | 34.71 | 35.00 | a | 38.45 | 50.42 | k | 63.64 | f | 65.16 | e | 64.70 | a | 63.75 | c | 64.54 | b | 47.63 | d | 36.59 | a | 32.86 | b | 48.34 | b | ||
1996 | 27.23 | 34.50 | g | 41.13 | 50.46 | d | 60.93 | b | 61.57 | 70.82 | t | 61.76 | b | 57.21 | a | 44.70 | d | 37.30 | 32.24 | b | 47.45 | b | ||||
1997 | 32.52 | 39.61 | 41.19 | o | 50.59 | h | 61.42 | 67.03 | 65.68 | 67.42 | 60.52 | c | 47.68 | i | 43.43 | i | 39.03 | a | 54.15 | d | ||||||
1998 | 31.17 | a | 44.11 | a | 44.19 | 48.80 | j | 59.29 | 64.75 | b | 65.52 | 61.53 | n | 56.23 | 48.68 | 40.12 | f | 33.04 | e | 49.66 | c | |||||
1999 | 32.40 | a | 34.96 | 40.16 | 46.71 | f | 54.36 | i | 62.57 | 67.24 | f | 63.26 | d | 54.03 | 47.41 | b | 39.37 | 38.10 | a | 45.81 | c | |||||
2000 | 31.74 | 38.72 | d | 42.32 | 47.65 | m | 57.32 | c | 62.38 | a | 62.35 | 63.74 | 56.14 | a | 48.32 | 42.22 | l | 36.29 | c | 49.93 | b | |||||
2001 | 40.24 | b | 36.93 | 39.94 | 48.70 | c | 53.48 | 62.15 | c | 62.52 | d | 66.03 | 56.70 | 45.80 | f | 38.00 | 34.06 | 48.98 | a | |||||||
2002 | 36.11 | d | 35.68 | 36.28 | f | 46.33 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.37 | i | ||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.47 | 65.28 | f | 65.03 | b | 55.27 | 51.09 | i | 35.50 | j | 36.74 | 54.13 | h | |||
2004 | 31.73 | a | 41.46 | c | 41.23 | e | 49.13 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.14 | i |
2005 | ----- | z | ----- | z | ----- | z | 58.87 | o | 62.48 | b | 64.37 | 63.97 | b | 67.48 | b | 57.86 | a | 47.47 | a | 41.37 | c | 39.96 | c | 55.62 | d | |
2006 | 34.47 | a | 37.19 | b | 36.06 | 45.03 | 53.42 | 60.60 | 63.35 | 58.77 | a | 56.83 | 47.71 | 28.90 | 37.10 | 46.62 | ||||||||||
2007 | 34.42 | 31.86 | 32.48 | 46.03 | 52.23 | 61.07 | 61.97 | 65.58 | 56.97 | 46.45 | 40.00 | 32.29 | 46.78 | |||||||||||||
2008 | 32.13 | 33.48 | 40.19 | 44.97 | 54.29 | 56.17 | 58.58 | 60.68 | 54.27 | 46.48 | 39.13 | 31.29 | 45.97 | |||||||||||||
2009 | 30.90 | 34.43 | 35.19 | 45.53 | 56.65 | 62.80 | 69.94 | 63.10 | 56.47 | 48.29 | 38.63 | 34.13 | 48.00 | |||||||||||||
2010 | 36.23 | 41.18 | 42.00 | 48.63 | 58.74 | 60.30 | 60.19 | 63.42 | 60.73 | 48.60 | a | 40.10 | 31.81 | 49.33 | ||||||||||||
2011 | 34.74 | 33.00 | 36.48 | 46.33 | 54.87 | 62.20 | 63.03 | 59.23 | 56.27 | 47.74 | 34.37 | 37.71 | 47.16 | |||||||||||||
2012 | 30.84 | 40.17 | 39.65 | 50.73 | 49.10 | 58.17 | 61.68 | 61.71 | 56.33 | 45.77 | 35.53 | 30.16 | 46.65 | |||||||||||||
2013 | 35.94 | 39.22 | a | 37.42 | 43.70 | 56.61 | 66.73 | 67.55 | 67.48 | 59.20 | 50.23 | 37.13 | 33.26 | 49.54 | ||||||||||||
2014 | 40.26 | 33.68 | 38.45 | 49.07 | 60.71 | 60.37 | 63.77 | 65.90 | a | 59.07 | 50.19 | 41.03 | a | 38.77 | 50.11 | |||||||||||
2015 | 39.19 | 37.57 | 43.58 | 47.77 | 63.81 | 65.13 | 64.68 | 65.65 | 56.50 | 51.16 | 40.57 | 36.23 | 50.99 | |||||||||||||
2016 | 39.94 | 42.17 | 47.10 | 50.97 | 59.39 | 64.57 | 67.00 | 65.97 | 59.67 | 49.58 | 42.63 | 33.03 | 51.83 | |||||||||||||
2017 | 35.65 | 38.43 | 31.97 | 51.17 | 57.19 | 58.77 | 60.87 | 63.77 | a | 57.83 | 47.87 | 35.67 | 38.35 | 48.13 | ||||||||||||
2018 | 36.10 | 33.04 | 39.65 | 47.67 | 55.80 | a | 61.52 | a | 69.16 | 64.90 | 62.23 | 51.03 | 43.23 | 37.26 | 50.13 | |||||||||||
2019 | 36.23 | 33.11 | a | 47.13 | a | 50.00 | 59.57 | a | 65.41 | a | 69.10 | a | 69.68 | 62.63 | 48.45 | 42.24 | a | 38.61 | 51.85 | |||||||
2020 | 31.45 | 37.21 | 38.45 | 46.23 | 59.58 | 58.57 | 64.13 | 61.39 | 58.97 | 47.52 | 36.55 | a | 39.19 | 48.27 | ||||||||||||
2021 | 36.83 | a | 32.79 | 37.90 | a | 48.48 | a | 52.13 | 62.67 | 65.69 | e | 63.52 | b | 56.03 | 46.06 | 38.67 | 29.23 | a | 47.50 | |||||||
2022 | 34.19 | 37.54 | 41.35 | 45.72 | a | 57.77 | 66.93 | a | 65.06 | 65.10 | 58.97 | 52.06 | 38.40 | 30.94 | 49.50 | |||||||||||
2023 | 40.35 | 35.82 | 38.48 | 46.30 | 57.23 | 62.24 | e | 69.29 | 67.97 | a | 57.43 | 50.42 | 42.80 | 39.32 | 50.64 | |||||||||||
2024 | 34.29 | 37.28 | 42.90 | 46.11 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.16 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.76 | 36.56 | 39.91 | 47.73 | 57.05 | 62.19 | 64.35 | 64.51 | 57.94 | 48.31 | 38.63 | 35.22 | 48.80 | |||||||||||||
S.D. | 3.70 | 3.95 | 3.62 | 2.17 | 3.60 | 2.84 | 3.10 | 2.67 | 2.53 | 1.88 | 3.20 | 3.18 | 1.81 | |||||||||||||
SKEW | 0.10 | -0.68 | -0.16 | 0.05 | -0.17 | -0.17 | 0.32 | -0.14 | 0.84 | 0.17 | -0.79 | -0.15 | 0.19 | |||||||||||||
MAX | 42.30 | 44.11 | 47.13 | 51.17 | 63.81 | 67.03 | 70.61 | 69.68 | 64.54 | 52.06 | 43.23 | 39.96 | 51.85 | |||||||||||||
MIN | 27.23 | 24.43 | 31.97 | 43.70 | 49.10 | 56.17 | 58.58 | 58.77 | 54.03 | 44.70 | 28.90 | 29.23 | 45.97 | |||||||||||||
YRS | 34 | 29 | 28 | 24 | 28 | 33 | 33 | 34 | 32 | 29 | 30 | 34 | 19 |