YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.65 | u | ----- | z |
1942 | 35.11 | 32.57 | 37.67 | a | 46.13 | 53.89 | 61.57 | 64.48 | 62.69 | 56.72 | 48.52 | a | 42.50 | c | 37.16 | 48.25 | ||||||||||
1943 | 35.32 | 38.41 | 40.11 | 48.50 | 55.73 | 61.22 | a | ----- | z | ----- | z | 54.58 | r | 47.18 | 37.55 | 30.53 | 43.84 | c | ||||||||
1944 | 29.55 | a | 35.02 | a | 37.64 | b | 43.45 | 52.74 | 62.93 | a | 65.38 | w | 64.97 | b | 56.93 | a | 49.21 | b | 38.05 | 32.47 | a | 45.72 | a | |||
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.40 | 64.35 | 64.42 | 57.53 | 49.13 | a | 41.60 | 32.50 | b | 52.71 | e | |||||
1946 | 28.66 | 34.50 | 41.02 | 50.13 | 52.61 | 64.00 | 63.87 | 63.97 | 60.85 | 50.89 | 38.15 | 37.00 | 48.80 | |||||||||||||
1947 | 29.18 | a | 35.91 | 40.35 | 45.58 | 56.47 | 61.55 | 65.68 | 63.58 | 59.13 | 50.63 | 36.02 | 30.06 | 47.85 | ||||||||||||
1948 | 32.05 | a | 35.45 | a | 35.66 | 50.40 | 55.52 | 62.42 | 64.89 | 64.15 | 57.22 | 48.19 | 34.92 | 37.58 | 48.20 | |||||||||||
1949 | 26.11 | 33.75 | 41.15 | 44.40 | 52.85 | 62.22 | 64.29 | 61.81 | 58.53 | 46.40 | 41.95 | 32.29 | c | 47.15 | ||||||||||||
1950 | 37.58 | 37.91 | 42.19 | 48.23 | 53.06 | 62.73 | 64.71 | 61.03 | 55.83 | 52.58 | 41.58 | 36.37 | 49.49 | |||||||||||||
1951 | 31.88 | a | 35.70 | 40.03 | 44.13 | 53.90 | a | 60.42 | 67.81 | 64.29 | 58.32 | 50.95 | 38.95 | 35.03 | 48.45 | |||||||||||
1952 | 39.24 | 34.34 | 36.69 | 45.42 | 53.42 | 63.93 | 63.23 | 65.31 | 57.05 | 48.42 | 36.12 | 33.39 | 48.05 | |||||||||||||
1953 | 38.07 | a | 32.48 | 42.26 | 47.14 | a | 52.15 | 64.08 | 66.35 | 63.37 | 56.92 | 47.65 | 40.43 | 28.68 | 48.30 | |||||||||||
1954 | 36.34 | 38.80 | a | 39.84 | 49.62 | 54.38 | a | 61.90 | 65.90 | 63.69 | 60.15 | 51.55 | 40.28 | 33.60 | 49.67 | |||||||||||
1955 | 30.48 | 31.98 | 40.66 | 46.23 | 52.84 | 59.63 | 63.37 | 62.87 | 59.35 | 49.71 | 40.95 | 36.47 | 47.88 | |||||||||||||
1956 | 36.15 | 29.59 | 40.06 | 43.97 | 54.71 | 64.18 | 64.00 | 62.31 | 58.42 | 49.79 | 35.03 | 33.03 | 47.60 | |||||||||||||
1957 | 37.34 | 42.59 | 40.53 | 45.68 | 51.53 | 62.38 | 66.65 | 63.65 | 56.35 | 48.18 | 36.18 | 35.95 | 48.92 | |||||||||||||
1958 | 28.61 | 37.36 | 35.56 | 45.15 | 54.66 | 64.98 | 66.76 | 65.63 | 59.17 | 47.77 | 39.90 | 35.68 | 48.44 | |||||||||||||
1959 | 34.52 | 35.25 | 38.71 | 48.20 | 54.08 | 64.18 | 64.98 | 65.03 | 58.58 | 49.37 | 38.30 | 34.58 | 48.82 | |||||||||||||
1960 | 29.35 | 32.29 | 45.31 | 51.75 | 55.21 | 65.05 | 64.76 | 66.00 | 60.30 | 49.31 | 42.05 | 30.55 | 49.33 | |||||||||||||
1961 | 31.65 | 36.20 | 42.23 | 49.08 | 57.31 | 63.03 | a | 65.26 | 64.19 | 58.68 | 49.95 | 38.02 | a | 35.13 | 49.23 | |||||||||||
1962 | 31.26 | 40.48 | 36.39 | 49.07 | 55.31 | 61.55 | 64.77 | 64.98 | 60.92 | 50.79 | 42.17 | 35.53 | 49.43 | |||||||||||||
1963 | 29.98 | 37.89 | 41.79 | 51.47 | 58.48 | 62.72 | 67.56 | 63.71 | 59.95 | 52.35 | 42.35 | 33.73 | a | 50.17 | ||||||||||||
1964 | 29.95 | 28.16 | 38.85 | 46.83 | 56.16 | 62.53 | 66.71 | 65.60 | 59.20 | 50.90 | 41.37 | 35.73 | 48.50 | |||||||||||||
1965 | 37.71 | 32.16 | 37.45 | 48.67 | 55.03 | 60.67 | 65.71 | 63.15 | 58.88 | a | 50.05 | 45.58 | 36.68 | 49.31 | ||||||||||||
1966 | 28.84 | 30.73 | 42.10 | 48.88 | 56.25 | a | 62.77 | 68.58 | 64.60 | 59.25 | 50.34 | 45.32 | 35.45 | 49.43 | ||||||||||||
1967 | 33.85 | 38.68 | 46.94 | 50.33 | 55.24 | 63.07 | 67.27 | 62.44 | 58.13 | 51.02 | 44.47 | 31.20 | a | 50.22 | ||||||||||||
1968 | 34.45 | 38.62 | a | 37.60 | 42.55 | 51.98 | 59.58 | d | 61.87 | 60.97 | b | 53.78 | c | 48.73 | 37.12 | 31.77 | a | 46.58 | ||||||||
1969 | 38.23 | 34.75 | 32.74 | 45.75 | 51.71 | 58.15 | 64.56 | 63.32 | a | 57.10 | 49.53 | a | 37.27 | 34.88 | a | 47.33 | ||||||||||
1970 | 30.56 | 36.14 | 35.95 | 44.33 | 52.47 | 57.77 | 63.24 | 62.69 | 57.25 | 44.65 | 41.83 | a | 37.65 | 47.04 | ||||||||||||
1971 | 34.16 | 34.64 | 39.79 | 43.97 | 52.02 | 59.27 | 63.71 | 59.37 | 57.09 | a | 46.87 | 39.33 | 34.48 | 47.06 | ||||||||||||
1972 | 34.29 | 35.55 | 43.03 | 45.90 | 49.42 | a | 59.83 | a | 63.10 | 60.63 | a | 56.76 | a | 50.55 | a | 34.47 | 33.06 | 47.22 | ||||||||
1973 | 30.48 | 32.48 | 36.05 | 39.90 | 50.15 | a | 57.87 | 62.11 | 60.05 | a | 56.92 | 47.19 | 42.72 | 33.03 | a | 45.75 | ||||||||||
1974 | 34.42 | a | 32.32 | 43.29 | 45.07 | 54.55 | 61.22 | 60.35 | a | 60.87 | a | 55.35 | 49.34 | 38.65 | 29.61 | 47.09 | ||||||||||
1975 | ----- | z | ----- | z | 40.07 | a | 43.74 | a | 48.05 | a | ----- | z | 61.18 | ----- | z | 54.38 | 48.29 | 39.47 | a | 33.21 | 46.05 | d | ||||
1976 | 32.15 | a | 39.52 | b | 38.30 | c | 44.52 | a | 51.05 | 59.43 | b | 61.53 | a | 60.42 | 55.97 | 43.73 | 34.40 | 32.33 | a | 46.11 | ||||||
1977 | 31.13 | a | 35.09 | 37.42 | 45.79 | i | 51.97 | 61.68 | b | 62.66 | 64.73 | a | 60.05 | b | 49.45 | a | 40.57 | b | 40.02 | b | 48.62 | a | ||||
1978 | 34.78 | a | 32.98 | c | 41.74 | 47.40 | a | ----- | z | ----- | z | 63.86 | b | 60.90 | b | 56.03 | 49.52 | b | 41.34 | a | 34.88 | g | 47.62 | c | ||
1979 | 31.23 | 35.30 | a | 39.24 | 46.33 | 51.92 | 59.42 | 64.50 | p | 61.44 | n | 56.34 | a | ----- | z | 34.97 | a | 34.16 | 43.21 | c | ||||||
1980 | 36.53 | 37.09 | 38.63 | 42.83 | 51.82 | a | 65.95 | 65.40 | 63.21 | 58.75 | 45.58 | 36.80 | 38.23 | a | 48.40 | |||||||||||
1981 | 33.94 | 37.25 | ----- | z | ----- | z | 54.80 | a | 63.11 | b | 65.18 | 62.02 | 58.23 | 50.53 | 42.48 | 37.95 | 50.55 | b | ||||||||
1982 | 34.42 | l | 35.78 | e | 41.58 | g | 48.98 | e | 51.34 | b | 61.02 | b | 64.75 | a | 63.65 | a | 59.07 | a | 46.58 | a | 38.85 | g | 31.02 | g | 53.90 | d |
1983 | 33.10 | e | 35.11 | a | 40.19 | d | 42.04 | c | 50.45 | b | 59.09 | c | 63.55 | 62.88 | c | 60.87 | 50.63 | 41.82 | 36.27 | a | 48.00 | |||||
1984 | 33.27 | a | 33.77 | g | 39.43 | h | 44.02 | i | 57.48 | f | 61.12 | f | 63.14 | f | 62.20 | a | 56.44 | d | 46.52 | e | 39.78 | e | 36.88 | b | 45.85 | f |
1985 | 33.16 | i | 33.74 | a | 41.12 | a | 48.82 | 55.82 | 61.37 | 63.71 | 64.45 | 58.28 | 48.90 | 42.83 | 34.39 | 50.31 | a | |||||||||
1986 | 36.40 | 38.29 | 42.24 | 49.92 | 54.78 | b | 60.32 | 63.13 | 63.71 | 57.92 | 48.03 | 39.97 | 32.71 | 48.95 | ||||||||||||
1987 | 32.26 | 34.21 | 39.44 | 45.52 | 52.55 | a | 57.55 | t | ----- | z | 62.69 | b | 56.64 | b | 53.02 | c | 39.65 | 33.18 | 44.92 | b | ||||||
1988 | 33.19 | 38.81 | 41.11 | 47.77 | 55.52 | 62.55 | 63.95 | 62.81 | 56.77 | 52.00 | 42.85 | 33.29 | 49.22 | |||||||||||||
1989 | 34.34 | 40.18 | 45.32 | 52.21 | a | 58.27 | 63.95 | 65.55 | 63.87 | 58.17 | 50.13 | 41.68 | 32.39 | 50.50 | ||||||||||||
1990 | 33.98 | 34.73 | 42.61 | 49.78 | a | 55.18 | 68.22 | 63.52 | 61.39 | 59.03 | 50.27 | 42.93 | 35.90 | a | 49.80 | |||||||||||
1991 | 33.68 | 38.20 | 40.35 | 48.87 | c | 55.92 | 61.07 | 62.58 | 62.15 | 57.15 | 50.98 | 39.02 | 33.10 | 48.59 | ||||||||||||
1992 | 29.19 | 35.66 | a | 41.52 | 48.90 | 53.85 | 61.73 | 64.27 | 63.61 | 59.43 | 52.05 | 35.70 | 34.26 | 48.35 | ||||||||||||
1993 | 37.50 | 38.41 | 41.35 | 49.46 | b | ----- | z | ----- | z | ----- | z | ----- | z | 57.11 | b | 48.33 | b | 37.25 | d | 33.17 | a | 42.82 | d | |||
1994 | 33.15 | a | 35.61 | 41.48 | d | 48.80 | c | 55.16 | f | 65.72 | c | 65.35 | d | 66.33 | d | 59.02 | a | 48.04 | h | 41.48 | g | 36.88 | c | 50.26 | c | |
1995 | 33.95 | c | 41.32 | c | 42.52 | e | 46.04 | e | 56.23 | g | 62.50 | d | 64.85 | 65.40 | a | 59.07 | h | 50.13 | a | 43.63 | c | 35.91 | c | 48.63 | b | |
1996 | 36.36 | i | 42.89 | g | 40.43 | c | 50.48 | g | 60.67 | e | 66.15 | c | 65.90 | p | 63.68 | c | 57.12 | e | 50.61 | h | 40.68 | e | 36.12 | e | 52.12 | e |
1997 | 32.12 | f | 34.57 | e | 42.85 | e | 46.40 | f | 56.36 | f | 62.91 | c | 65.34 | b | 64.82 | c | 62.78 | g | 48.07 | i | 39.09 | c | 28.52 | i | 51.60 | f |
1998 | 35.36 | b | 33.54 | d | 39.80 | f | 43.41 | h | 58.00 | f | 65.18 | e | ----- | z | 64.50 | e | 61.91 | b | 51.21 | e | ----- | z | 35.77 | c | 49.64 | e |
1999 | 38.90 | g | 40.06 | c | ----- | z | 48.04 | d | 57.14 | c | ----- | z | 64.90 | b | 64.86 | b | 58.87 | c | 49.67 | h | 42.84 | b | 30.93 | b | 50.96 | d |
2000 | 38.83 | d | 40.62 | c | 43.00 | f | 52.52 | h | 61.02 | d | 62.96 | c | 67.41 | d | 64.95 | a | 61.52 | a | 49.32 | c | 33.82 | b | 35.57 | a | 51.60 | b |
2001 | 29.98 | a | 36.46 | e | 40.50 | b | 50.40 | d | 58.94 | d | 65.42 | f | 67.60 | b | 64.45 | b | 60.33 | c | 53.40 | 41.74 | a | 35.24 | b | 49.01 | a | |
2002 | 37.75 | a | 36.45 | 43.15 | a | 51.59 | s | 60.10 | p | 67.27 | b | 65.85 | 66.57 | a | 59.47 | 49.97 | 40.81 | a | 34.27 | c | 50.15 | b | ||||
2003 | 39.78 | b | 37.41 | 40.84 | 50.12 | b | 59.59 | h | 63.50 | 68.75 | c | 65.90 | f | 61.90 | i | 55.04 | c | 45.38 | b | 38.31 | d | 48.79 | c | |||
2004 | 37.12 | c | 34.20 | b | 45.30 | c | 47.67 | a | 59.48 | a | 64.56 | c | 65.97 | b | 62.43 | a | 58.04 | d | 51.67 | d | 38.64 | a | 35.34 | 50.04 | ||
2005 | 40.32 | a | 38.61 | 41.62 | c | 47.44 | e | 53.08 | m | 67.86 | w | 67.78 | b | 63.24 | b | 60.70 | 50.16 | 42.83 | 37.47 | a | 49.02 | b | ||||
2006 | 38.21 | b | 39.30 | 42.79 | b | 51.89 | c | 59.00 | c | 65.07 | 67.15 | 63.11 | 56.33 | a | 49.84 | 42.12 | 33.04 | c | 50.65 | |||||||
2007 | 31.85 | d | 36.60 | b | 42.77 | c | 47.40 | a | 53.83 | b | 62.50 | b | 64.30 | a | 65.45 | 59.70 | 52.44 | 43.27 | 34.94 | 49.59 | ||||||
2008 | 32.89 | 38.91 | b | 42.23 | a | 47.86 | e | 56.26 | 65.80 | 65.02 | a | 64.00 | 57.07 | a | 51.30 | c | 42.45 | 38.85 | 50.22 | |||||||
2009 | 37.88 | a | 40.70 | c | 45.48 | a | 49.18 | 59.55 | b | 64.43 | b | 68.70 | a | 66.50 | 59.40 | d | 52.36 | c | 44.58 | 34.61 | 51.95 | |||||
2010 | 35.22 | a | 36.68 | 41.95 | c | 52.11 | b | 57.81 | d | 68.10 | 68.11 | 67.82 | a | 64.30 | b | 54.94 | 43.59 | b | 44.27 | a | 52.91 | |||||
2011 | 37.83 | a | 36.40 | h | 50.24 | b | 57.50 | a | 59.48 | a | 70.63 | k | 71.72 | b | 70.52 | a | 62.52 | a | 54.24 | 43.65 | 31.95 | 53.97 | b | |||
2012 | 40.48 | 37.25 | a | 48.34 | b | 55.43 | 60.77 | 71.58 | 68.35 | a | 69.34 | 62.84 | a | 56.27 | 48.13 | 38.24 | 54.75 | |||||||||
2013 | 33.84 | b | 36.79 | 47.06 | 51.15 | 59.53 | 70.97 | 66.82 | 67.95 | 61.82 | 52.53 | 42.32 | 36.66 | b | 52.29 | |||||||||||
2014 | 38.27 | 43.34 | 44.90 | 50.83 | 58.48 | 71.30 | 69.21 | b | 65.48 | 61.48 | 56.14 | b | 42.25 | 38.54 | f | 54.70 | a | |||||||||
2015 | 35.57 | a | 42.09 | e | 46.96 | e | 51.09 | a | 55.66 | 67.73 | 67.31 | r | 68.52 | g | 66.50 | 54.39 | 44.88 | i | 38.02 | b | 50.89 | c | ||||
2016 | 35.95 | c | 43.32 | a | 48.33 | a | 50.72 | 56.73 | 69.04 | c | 74.38 | a | 64.92 | 63.10 | 59.89 | 45.28 | 40.38 | a | 54.34 | |||||||
2017 | 38.74 | d | 45.25 | 51.39 | 53.02 | b | 58.00 | 69.03 | 69.17 | d | 66.52 | a | 65.03 | a | 54.73 | a | 52.10 | ----- | z | 56.63 | a | |||||
2018 | 39.14 | i | ----- | z | 47.68 | 53.98 | 64.94 | 71.65 | 69.90 | 68.32 | 62.82 | 50.90 | 42.38 | 36.98 | 56.96 | b | ||||||||||
2019 | 36.68 | 39.21 | n | 43.95 | j | 52.72 | 56.03 | 65.50 | e | ----- | z | 70.81 | 65.50 | 51.40 | 44.10 | 39.47 | b | 53.58 | c | |||||||
2020 | 38.84 | 38.48 | b | 47.18 | 53.10 | 64.11 | 69.72 | 72.61 | 71.85 | 62.76 | a | 55.47 | 48.09 | a | 36.76 | 54.91 | ||||||||||
2021 | 36.62 | a | 37.50 | 44.44 | 49.73 | 59.94 | 69.45 | 67.06 | 66.53 | 64.50 | 55.50 | 48.50 | 44.18 | 53.66 | ||||||||||||
2022 | 37.39 | 35.41 | 43.82 | 55.27 | 63.89 | 68.03 | 71.06 | 66.55 | 63.85 | 50.77 | 39.57 | 38.27 | 52.82 | |||||||||||||
2023 | 36.84 | 37.89 | 43.97 | 51.00 | 59.89 | 69.35 | 74.44 | 70.74 | 66.77 | 55.84 | 45.35 | 40.78 | b | 54.40 | ||||||||||||
2024 | 36.72 | a | 41.74 | 44.27 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.23 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.37 | 36.62 | 41.60 | 48.29 | 55.50 | 63.67 | 65.80 | 64.31 | 59.19 | 50.55 | 40.92 | 35.21 | 49.42 | |||||||||||||
S.D. | 3.34 | 3.26 | 3.58 | 3.37 | 3.50 | 3.46 | 2.83 | 2.51 | 2.77 | 2.86 | 3.54 | 2.98 | 2.24 | |||||||||||||
SKEW | -0.24 | 0.13 | 0.34 | 0.12 | 0.51 | 0.60 | 0.97 | 0.84 | 0.79 | 0.50 | 0.26 | 0.50 | 0.97 | |||||||||||||
MAX | 40.48 | 45.25 | 51.39 | 57.50 | 64.94 | 71.65 | 74.44 | 71.85 | 66.77 | 59.89 | 52.10 | 44.27 | 54.91 | |||||||||||||
MIN | 26.11 | 28.16 | 32.74 | 39.90 | 48.05 | 57.77 | 60.35 | 59.37 | 53.78 | 43.73 | 33.82 | 28.68 | 45.75 | |||||||||||||
YRS | 75 | 76 | 74 | 73 | 71 | 73 | 72 | 76 | 78 | 77 | 78 | 77 | 52 |