YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.69 | r | 41.95 | 27.95 | b | 34.95 | j | |
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 | ----- | 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 | 63.54 | d | 50.18 | e | 50.32 | f | 41.63 | d | 36.65 | e | 48.00 | h |
1987 | 30.10 | j | 36.22 | c | 36.98 | d | 47.20 | e | 50.45 | i | 59.25 | f | 57.88 | b | 60.43 | b | 58.04 | f | 50.48 | c | 38.92 | d | 28.83 | d | 44.62 | d |
1988 | 24.95 | k | 35.57 | f | 32.19 | j | 40.00 | g | 45.94 | f | 51.31 | f | 60.30 | f | 59.15 | g | 51.16 | k | 54.04 | d | 34.28 | e | 30.33 | g | 44.16 | j |
1989 | 27.84 | l | 22.35 | k | 31.70 | p | 43.26 | k | 45.16 | f | 56.83 | f | 58.02 | g | 55.83 | e | 54.50 | g | 43.15 | d | 37.16 | h | 35.57 | d | 44.85 | i |
1990 | 31.42 | g | 25.62 | g | 35.23 | g | 43.73 | 46.34 | f | 51.77 | b | 63.17 | b | 60.30 | a | 57.96 | c | 44.54 | d | 36.40 | d | 19.77 | e | 47.21 | d | |
1991 | 30.52 | e | 39.69 | a | 33.06 | f | 38.16 | e | 43.96 | f | 51.43 | c | 66.60 | a | 65.70 | c | 58.74 | a | 45.78 | f | 35.82 | h | 33.62 | c | 48.06 | d |
1992 | 32.95 | c | 37.30 | a | 42.00 | b | 44.50 | b | 56.46 | c | 57.48 | c | 57.84 | b | 61.07 | a | 54.10 | 48.57 | d | 36.17 | c | 26.46 | c | 46.24 | ||
1993 | 23.78 | h | 26.81 | b | 37.93 | c | 38.24 | c | 52.16 | c | 50.88 | b | 52.17 | d | 58.48 | c | 56.34 | a | 46.12 | b | 32.98 | d | 32.46 | e | 44.05 | a |
1994 | 33.83 | d | 31.44 | c | 38.28 | d | 44.65 | g | 49.22 | a | 51.30 | 62.23 | 57.24 | 54.86 | b | 43.12 | e | 27.72 | g | 28.29 | c | 44.98 | b | |||
1995 | 32.90 | e | 38.20 | h | 34.30 | h | 38.15 | d | 47.08 | e | 52.17 | c | 60.64 | c | 55.60 | e | 55.90 | d | 43.52 | e | 40.16 | h | 32.70 | a | 46.52 | c |
1996 | 28.95 | c | 31.42 | d | 36.17 | e | 40.81 | a | 43.52 | d | 53.48 | c | 63.02 | d | 62.06 | f | 51.50 | d | 42.07 | i | 34.29 | f | 30.63 | d | 42.17 | c |
1997 | 29.70 | d | 32.02 | e | 34.84 | c | 37.12 | f | 48.28 | m | 52.17 | o | 58.94 | o | 61.10 | p | 57.38 | q | 43.28 | o | 37.97 | a | 29.64 | c | 32.83 | g |
1998 | 32.74 | 33.12 | h | 34.21 | 42.89 | l | 45.00 | v | 53.72 | l | 66.03 | m | 62.50 | l | 56.44 | n | 46.00 | r | 35.00 | o | 26.86 | i | 33.48 | j | ||
1999 | 30.57 | j | 29.67 | d | 32.89 | m | 36.17 | i | 36.23 | t | 51.19 | l | 59.73 | t | 60.90 | p | 57.50 | t | 46.25 | y | 41.56 | m | 33.60 | p | 29.67 | k |
2000 | 28.48 | i | 33.24 | l | 34.47 | p | 43.25 | p | 44.72 | m | 55.47 | k | 56.33 | s | 59.37 | l | 55.47 | o | 42.91 | n | 29.88 | r | 32.39 | m | ----- | z |
2001 | 30.79 | n | 29.91 | k | 36.71 | l | 38.25 | l | 49.17 | m | 51.03 | n | 56.84 | o | 60.28 | o | 54.12 | n | 41.94 | v | 36.55 | s | 29.67 | g | ----- | z |
2002 | 27.84 | l | 32.90 | h | 31.82 | i | 40.77 | o | 43.12 | o | 56.29 | k | 63.14 | q | 57.85 | n | 53.70 | o | 42.45 | u | 39.28 | n | 33.31 | m | ----- | z |
2003 | 33.35 | n | 29.03 | j | 34.86 | m | 35.37 | k | ----- | z | 56.60 | o | 61.89 | m | 60.72 | m | 54.40 | t | 47.87 | l | 28.31 | v | 32.88 | n | ----- | z |
2004 | 31.23 | k | 33.21 | j | 38.97 | o | 43.53 | k | 46.75 | o | 53.97 | o | 61.15 | n | 59.92 | r | 53.04 | p | 43.97 | p | 36.75 | l | 34.16 | o | ----- | z |
2005 | 30.74 | l | 33.96 | o | 38.10 | k | 39.62 | m | 45.39 | q | 48.03 | m | 60.97 | p | 58.66 | l | 52.25 | n | 50.18 | t | 33.81 | q | 30.74 | l | ----- | z |
2006 | 31.58 | l | 30.15 | k | 31.40 | j | 39.15 | g | ----- | z | 56.94 | l | 60.32 | t | 56.88 | n | 51.95 | i | 43.76 | 34.93 | c | 30.67 | e | 36.45 | i | |
2007 | 27.04 | c | 33.31 | a | 37.93 | b | 39.19 | a | 46.91 | b | 51.57 | a | 61.88 | b | 56.27 | a | 50.17 | c | 41.48 | b | 36.22 | a | 29.14 | b | 42.59 | |
2008 | 25.46 | f | 32.28 | 31.60 | a | 33.57 | a | 43.31 | 48.15 | c | 59.22 | a | 60.31 | e | 55.86 | a | 46.50 | a | 39.38 | b | 29.19 | 43.58 | a | |||
2009 | 30.05 | b | 32.06 | c | 30.93 | a | 35.78 | a | 47.26 | b | 53.60 | 60.97 | 58.06 | 55.59 | b | 40.81 | 34.07 | 25.43 | a | 42.05 | ||||||
2010 | 34.82 | 34.89 | 35.30 | c | 36.48 | 41.61 | 49.09 | a | 59.22 | b | 58.18 | a | 50.80 | 45.82 | 32.73 | 30.37 | 42.44 | |||||||||
2011 | 31.76 | 27.84 | 32.82 | 33.42 | 39.55 | 48.97 | 54.05 | 58.40 | 56.91 | a | 44.32 | 32.73 | b | 30.87 | 40.97 | |||||||||||
2012 | 30.94 | 30.83 | 31.19 | 39.02 | d | 45.74 | 48.75 | 58.56 | 59.98 | 56.18 | 44.47 | 36.50 | 27.94 | 42.51 | ||||||||||||
2013 | 28.60 | a | 30.73 | 35.21 | b | 38.35 | 46.82 | 51.73 | b | 59.86 | j | 59.23 | 53.93 | c | 42.02 | c | 36.29 | a | 27.08 | 40.91 | a | |||||
2014 | 35.32 | 29.25 | 36.08 | 40.05 | 48.19 | 50.28 | 62.29 | 60.32 | 55.97 | 47.79 | 35.33 | 33.73 | 44.55 | |||||||||||||
2015 | 36.97 | 38.57 | 41.17 | a | 38.42 | 47.45 | 58.98 | 60.50 | 60.33 | a | 50.90 | 49.85 | 33.75 | 30.52 | f | 46.99 | a | |||||||||
2016 | 32.85 | k | 35.96 | a | 35.12 | a | 44.97 | a | 48.88 | e | 49.10 | j | 55.69 | 58.22 | a | 50.07 | 42.74 | 40.00 | 23.47 | 43.51 | b | |||||
2017 | 25.20 | a | 30.61 | 34.81 | 36.58 | 46.34 | 54.38 | 60.60 | 62.58 | a | 54.70 | 41.98 | 34.50 | b | 30.98 | a | 42.77 | |||||||||
2018 | 34.11 | 27.93 | e | 33.02 | a | 39.12 | b | 48.98 | h | 52.83 | c | 60.46 | c | 58.81 | 49.69 | l | 44.72 | d | 37.68 | 29.94 | 41.86 | b | ||||
2019 | 32.98 | 23.75 | 30.44 | 39.95 | 46.97 | 52.50 | 57.16 | 59.47 | 51.43 | a | 39.26 | b | 38.30 | 31.29 | 41.96 | |||||||||||
2020 | 31.31 | 30.60 | 31.85 | 40.60 | 47.74 | 52.98 | g | 58.06 | 58.94 | 56.78 | 46.52 | a | 32.68 | 31.73 | 42.44 | a | ||||||||||
2021 | 31.21 | 29.04 | 32.29 | 39.00 | 45.47 | 58.50 | 61.94 | 60.03 | 52.32 | 41.97 | 37.78 | 30.44 | 43.33 | |||||||||||||
2022 | 32.15 | 31.86 | 36.56 | 33.37 | 41.15 | 51.65 | 62.00 | 63.74 | 56.17 | 51.47 | 30.65 | 27.76 | 43.21 | |||||||||||||
2023 | 28.69 | 26.64 | 27.53 | 35.65 | 48.45 | 52.85 | 60.06 | 61.39 | 51.58 | 45.28 | a | 38.18 | 38.08 | y | 43.30 | a | ||||||||||
2024 | 31.18 | a | 32.45 | 33.03 | 35.70 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.22 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.47 | 31.66 | 34.69 | 38.93 | 46.68 | 52.38 | 59.84 | 59.71 | 54.12 | 45.17 | 36.23 | 29.74 | 42.97 | |||||||||||||
S.D. | 2.74 | 3.79 | 3.36 | 3.56 | 3.71 | 2.92 | 3.13 | 2.40 | 2.72 | 3.52 | 2.88 | 3.50 | 1.41 | |||||||||||||
SKEW | -0.23 | 0.27 | 0.20 | 0.48 | 0.40 | 0.88 | -0.47 | 0.50 | -0.17 | 0.74 | 0.17 | -0.60 | 1.09 | |||||||||||||
MAX | 36.97 | 39.69 | 42.00 | 47.20 | 56.46 | 58.98 | 66.60 | 65.70 | 58.74 | 54.04 | 41.95 | 36.65 | 46.24 | |||||||||||||
MIN | 25.20 | 23.75 | 27.53 | 33.37 | 39.55 | 48.15 | 52.17 | 55.60 | 50.07 | 39.26 | 30.65 | 19.77 | 40.97 | |||||||||||||
YRS | 23 | 26 | 25 | 24 | 21 | 22 | 24 | 26 | 24 | 26 | 26 | 28 | 11 |