YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | 47.09 | h | ----- | z | 49.59 | d | 52.92 | a | 50.56 | e | 41.83 | e | 33.43 | b | 28.14 | j | 45.66 | g |
1942 | 34.60 | 34.14 | f | 34.40 | f | ----- | z | 54.16 | i | 54.43 | 57.48 | a | 56.15 | ----- | z | ----- | z | ----- | z | ----- | z | 50.66 | 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 | 51.03 | k | 58.84 | 56.23 | a | 47.93 | 38.19 | b | 35.33 | 25.03 | 43.59 | f | ||||
1973 | 21.16 | 26.19 | j | 35.85 | h | 39.22 | 44.47 | 50.07 | b | 53.46 | d | ----- | z | 47.55 | j | ----- | z | ----- | z | ----- | z | 41.68 | 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 | 55.15 | 56.97 | 50.07 | 44.50 | 32.27 | 31.02 | a | 44.99 | f | |||||
1979 | 27.85 | 19.02 | 36.23 | 41.23 | 46.30 | a | 51.52 | a | 57.61 | 59.15 | 51.86 | a | 46.27 | 38.53 | 30.11 | 42.14 | ||||||||||
1980 | 23.66 | 34.24 | 35.73 | 42.42 | d | 49.44 | 55.58 | 56.57 | b | 57.58 | 49.75 | b | 43.76 | n | 38.48 | 23.21 | l | 44.35 | b | |||||||
1981 | 38.67 | e | 34.48 | f | 41.13 | l | 40.64 | l | 51.00 | i | 54.83 | f | 57.98 | h | 58.18 | i | 51.31 | i | 42.13 | p | 35.85 | m | 27.73 | p | 38.67 | k |
1982 | 21.45 | t | 28.18 | n | 35.00 | u | 38.32 | m | 44.75 | g | 55.00 | e | 56.04 | g | 54.37 | d | 51.19 | l | 42.74 | h | 32.23 | d | 33.84 | b | 43.86 | h |
1983 | 32.55 | k | 37.21 | n | 37.40 | j | 44.45 | j | 52.39 | h | 54.78 | n | 59.52 | k | 56.85 | d | 51.25 | t | ----- | z | ----- | z | 25.36 | x | 56.85 | k |
1984 | 36.06 | o | 37.67 | w | 48.44 | o | 49.29 | f | 56.65 | e | 59.21 | k | 60.68 | c | 64.73 | g | 54.63 | k | ----- | z | ----- | z | ----- | z | 58.67 | j |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.60 | u | 49.98 | j | 39.39 | i | 25.76 | g | 32.70 | c | 32.70 | k |
1986 | 34.33 | e | 33.23 | m | ----- | z | 39.56 | v | 45.11 | l | 51.95 | h | 58.00 | x | 53.71 | x | ----- | z | ----- | z | ----- | z | 35.67 | b | 35.00 | j |
1987 | 35.60 | 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 | 42.19 | e | 29.91 | b | 29.92 | 34.01 | i | |
1995 | 29.69 | e | 29.56 | a | 32.37 | 42.11 | k | 51.74 | f | 55.94 | e | 58.35 | a | 56.50 | c | 56.38 | d | 42.91 | d | 32.82 | b | 30.38 | c | 42.49 | b | |
1996 | 22.13 | a | 28.66 | g | 34.42 | 41.02 | d | 48.55 | b | 53.97 | 61.09 | t | 56.05 | b | 50.12 | a | 40.91 | d | 33.13 | 28.97 | b | 40.93 | b | |||
1997 | 28.85 | a | 36.32 | 36.22 | o | 41.45 | h | 50.63 | 57.80 | 59.40 | 60.24 | 53.31 | c | 42.57 | i | 39.48 | j | 35.83 | b | 47.80 | d | |||||
1998 | 27.92 | a | 39.30 | a | 37.39 | 41.73 | j | 50.69 | 55.57 | c | 58.00 | 55.15 | n | 50.65 | 43.79 | 35.83 | f | 29.33 | e | 43.63 | c | |||||
1999 | 28.62 | a | 30.46 | 34.56 | 39.85 | f | 45.39 | i | 54.67 | 58.60 | f | 56.44 | e | 49.95 | 43.33 | b | 36.35 | 34.70 | a | 41.01 | c | |||||
2000 | 28.17 | a | 33.28 | d | 37.26 | 40.35 | m | 47.88 | c | 54.02 | a | 56.76 | 56.50 | 49.89 | c | 43.27 | 38.47 | l | 32.80 | d | 43.98 | b | ||||
2001 | 37.24 | b | 31.39 | 34.70 | a | 40.89 | c | 45.97 | 54.50 | c | 56.89 | d | 58.61 | 51.80 | 41.50 | f | 34.83 | 30.77 | 43.42 | a | ||||||
2002 | 32.41 | d | 31.88 | 30.26 | f | 37.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.81 | i | ||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.33 | 58.58 | f | 56.71 | b | 49.80 | 45.20 | i | 31.68 | j | 33.77 | a | 48.40 | h | ||
2004 | 28.00 | a | 37.06 | d | 36.27 | e | 42.70 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.78 | i |
2005 | ----- | z | ----- | z | ----- | z | 48.03 | o | 53.24 | b | 56.17 | 57.97 | b | 59.41 | b | 52.45 | a | 42.52 | a | 37.31 | c | 34.98 | d | 49.26 | d | |
2006 | 33.33 | m | 31.48 | c | 30.03 | 39.08 | 46.84 | 54.05 | 56.85 | 54.73 | a | 51.27 | 42.53 | 24.20 | 34.03 | 42.28 | a | |||||||||
2007 | 30.69 | 28.04 | 27.68 | 38.78 | 44.98 | 53.53 | a | 56.65 | 58.13 | 51.28 | 42.00 | 36.02 | 29.15 | 41.41 | ||||||||||||
2008 | 28.11 | 29.03 | 34.87 | 38.42 | 46.65 | 49.83 | 53.68 | 55.05 | 49.70 | 41.55 | 35.65 | 26.87 | 40.78 | |||||||||||||
2009 | 26.76 | 29.09 | 30.34 | 38.22 | 47.35 | 54.33 | 60.87 | 57.29 | 50.73 | 43.58 | 35.23 | 30.00 | 41.98 | |||||||||||||
2010 | 32.58 | 36.32 | 36.55 | 41.45 | 49.69 | 53.26 | a | 55.10 | 57.35 | 52.23 | 42.85 | a | 35.87 | 28.40 | 43.47 | |||||||||||
2011 | 30.74 | 27.61 | 30.47 | 39.50 | 47.56 | 54.35 | 56.27 | 54.26 | 50.15 | 43.13 | 30.28 | 33.74 | 41.51 | |||||||||||||
2012 | 26.94 | 35.41 | 34.05 | 42.37 | 44.44 | 51.97 | 55.40 | 55.61 | 50.75 | 40.11 | 32.53 | 26.77 | 41.36 | |||||||||||||
2013 | 32.16 | 35.54 | a | 31.55 | 36.98 | 47.90 | 57.68 | 59.37 | 59.60 | 53.08 | 45.45 | 32.75 | 29.03 | 43.43 | ||||||||||||
2014 | 36.13 | 27.32 | 32.65 | 41.27 | 51.27 | 53.02 | 57.89 | 58.47 | a | 53.22 | 44.27 | 36.55 | a | 33.90 | 43.83 | |||||||||||
2015 | 35.73 | 32.38 | 37.26 | 41.22 | 52.79 | 57.15 | 58.37 | 58.08 | 50.28 | 45.18 | 36.27 | 33.08 | 44.81 | |||||||||||||
2016 | 36.53 | 37.45 | 40.55 | 44.55 | a | 51.22 | a | 56.72 | a | 60.55 | 59.45 | 52.07 | 41.76 | 38.02 | 28.77 | 45.64 | ||||||||||
2017 | 31.02 | 31.30 | 27.33 | a | 42.50 | 48.94 | 53.08 | 55.43 | a | 56.00 | b | 50.62 | 42.05 | 30.43 | 33.82 | 41.88 | ||||||||||
2018 | 31.68 | 27.14 | 33.73 | 40.60 | 48.28 | a | 54.28 | a | 59.94 | 58.42 | 50.98 | 45.35 | 39.23 | 33.81 | 43.62 | |||||||||||
2019 | 32.44 | 26.41 | a | 38.62 | a | 42.02 | 51.09 | b | 56.90 | a | 61.08 | a | 59.13 | 53.70 | 42.48 | 38.57 | a | 35.87 | 44.86 | |||||||
2020 | 27.06 | 33.16 | 32.06 | 39.18 | 49.87 | 52.48 | 57.76 | 56.42 | 51.40 | 41.55 | 32.03 | a | 35.66 | 42.39 | ||||||||||||
2021 | 33.38 | a | 28.23 | 32.72 | a | 40.09 | a | 45.56 | 55.50 | 58.08 | e | 57.60 | b | 50.70 | 40.47 | 33.87 | 24.47 | a | 41.72 | |||||||
2022 | 29.58 | 33.21 | 36.03 | 38.48 | a | 47.66 | 57.11 | b | 58.81 | 59.39 | 52.55 | 46.66 | 33.77 | 26.92 | 43.35 | |||||||||||
2023 | 36.05 | 31.21 | 31.15 | 40.00 | 49.35 | 54.84 | e | 60.35 | 60.24 | b | 52.40 | 45.34 | 38.35 | 35.76 | 44.59 | |||||||||||
2024 | 30.32 | 32.21 | 34.89 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.47 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.64 | 31.55 | 33.98 | 40.28 | 48.76 | 54.46 | 57.47 | 57.23 | 51.30 | 42.97 | 34.48 | 31.47 | 42.93 | |||||||||||||
S.D. | 4.24 | 4.21 | 3.18 | 1.85 | 2.83 | 2.00 | 2.47 | 1.82 | 1.59 | 1.92 | 3.30 | 3.31 | 1.44 | |||||||||||||
SKEW | -0.19 | -0.61 | -0.23 | 0.16 | 0.66 | -0.39 | -0.98 | -0.24 | 0.89 | -0.11 | -0.89 | -0.37 | 0.30 | |||||||||||||
MAX | 38.67 | 39.30 | 40.55 | 44.55 | 56.65 | 57.80 | 61.08 | 60.24 | 56.38 | 46.66 | 39.23 | 35.87 | 45.64 | |||||||||||||
MIN | 21.16 | 19.02 | 27.33 | 36.98 | 44.44 | 49.83 | 49.59 | 52.92 | 47.93 | 38.19 | 24.20 | 24.47 | 40.78 | |||||||||||||
YRS | 33 | 29 | 28 | 24 | 28 | 32 | 32 | 34 | 32 | 29 | 30 | 34 | 18 |