YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.88 | v | 17.96 | c | 17.96 | k |
1940 | -1.71 | 9.04 | a | 6.16 | 22.70 | g | 38.46 | r | 50.50 | x | 61.27 | t | 53.08 | f | 48.80 | e | 35.93 | c | 17.04 | f | 10.43 | a | 18.11 | f | ||
1941 | 5.28 | b | 4.04 | b | 7.60 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.64 | i |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | 33.60 | t | 39.80 | p | 52.58 | f | 54.90 | b | 53.47 | a | 37.70 | t | 36.70 | u | ----- | z | ----- | z | 54.18 | j |
1944 | ----- | z | ----- | z | ----- | z | 24.62 | a | 47.64 | f | 51.32 | e | 52.48 | d | 52.72 | b | 44.59 | c | 32.94 | n | ----- | z | ----- | z | 45.15 | g |
1945 | ----- | z | ----- | z | ----- | z | 28.89 | c | 33.79 | b | 42.29 | m | 51.52 | h | 49.38 | g | 44.24 | i | 29.10 | j | ----- | z | ----- | z | 31.34 | j |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | 27.79 | p | 35.32 | f | 46.76 | m | 54.67 | d | 58.45 | b | 43.55 | h | 41.97 | b | 36.00 | w | ----- | z | 51.69 | i |
1948 | ----- | z | ----- | z | ----- | z | 30.58 | d | 34.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.76 | j |
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 | 22.75 | b | 7.89 | c | 15.32 | j |
1971 | -3.70 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -3.70 | k |
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 | 22.90 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.90 | k |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.45 | a | ----- | z | ----- | z | ----- | z | 44.45 | k |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.61 | k | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | 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 | 54.94 | 55.42 | 46.83 | 32.30 | a | 26.13 | 7.20 | a | 37.14 | f | ||||
1991 | -2.57 | a | 8.36 | 16.06 | 32.87 | 48.26 | 57.07 | 57.47 | a | 57.06 | 44.80 | 32.61 | 17.57 | 9.65 | 31.60 | |||||||||||
1992 | 9.90 | 10.10 | 13.45 | 29.00 | d | 41.77 | 48.27 | 51.10 | 49.77 | a | 44.20 | 32.97 | 22.20 | 13.59 | b | 30.53 | ||||||||||
1993 | 3.93 | a | 3.11 | 14.77 | 27.45 | a | 41.58 | 49.53 | 56.07 | a | 56.20 | a | 39.54 | b | 30.76 | b | 18.85 | c | 11.90 | b | 29.47 | |||||
1994 | -9.42 | -0.96 | 17.63 | a | 27.67 | c | 40.57 | a | 53.20 | 55.38 | b | 51.37 | a | 49.73 | 37.13 | 25.69 | a | 15.93 | b | 30.33 | ||||||
1995 | 7.67 | a | 4.43 | 18.29 | 24.53 | 39.48 | 56.38 | a | 57.59 | b | 60.39 | 43.89 | b | 37.41 | d | 13.50 | 6.87 | 30.87 | ||||||||
1996 | -3.29 | 3.11 | b | 8.61 | c | 25.37 | 38.87 | 52.67 | 54.19 | 52.39 | 45.93 | 32.16 | 16.03 | a | 10.32 | 28.03 | ||||||||||
1997 | 0.48 | 5.41 | a | 11.71 | 24.13 | 33.17 | b | 50.87 | 53.03 | 49.65 | 44.53 | 32.37 | a | 17.67 | 16.10 | a | 28.26 | |||||||||
1998 | 8.55 | 19.14 | 15.94 | 28.76 | a | 43.94 | 49.55 | a | 52.63 | a | 53.63 | a | 45.63 | 33.84 | 24.80 | 10.63 | a | 32.25 | ||||||||
1999 | -2.10 | 9.89 | a | 14.43 | a | 30.03 | 42.67 | a | 50.70 | 57.42 | 50.81 | 41.87 | 28.97 | 25.53 | 8.55 | b | 29.90 | |||||||||
2000 | -0.50 | a | 6.03 | 20.32 | 25.43 | 41.10 | 47.87 | 52.77 | a | 52.10 | a | 42.37 | 33.90 | a | 22.73 | -1.97 | a | 28.51 | ||||||||
2001 | 5.87 | -1.25 | 11.28 | b | 30.50 | 41.90 | 50.45 | a | 53.74 | 54.03 | a | 43.47 | 30.97 | 29.97 | a | 16.13 | a | 30.59 | ||||||||
2002 | 10.65 | 10.11 | 5.33 | a | 25.40 | 34.71 | 52.63 | 57.87 | 52.90 | 46.27 | 28.77 | 17.83 | a | 11.90 | 29.53 | |||||||||||
2003 | -0.13 | -5.11 | 9.68 | 23.83 | 36.60 | a | 47.43 | 52.71 | 54.10 | 44.73 | 31.52 | 20.27 | 12.03 | a | 27.31 | |||||||||||
2004 | -4.84 | 4.18 | a | 16.52 | 25.50 | 37.71 | 46.38 | a | 51.81 | 47.42 | 47.00 | 32.61 | 22.60 | 5.35 | 27.69 | |||||||||||
2005 | ----- | z | 8.75 | 7.23 | 29.13 | 37.97 | 56.90 | 57.74 | 57.29 | 49.66 | a | 39.58 | 25.28 | a | 13.83 | b | 34.85 | a | ||||||||
2006 | 19.10 | 1.44 | a | 17.10 | b | 31.90 | 44.27 | a | 50.93 | 58.97 | 54.94 | 43.53 | 31.00 | 26.70 | 16.40 | a | 33.02 | |||||||||
2007 | 9.30 | a | -0.39 | 19.00 | 26.27 | 44.94 | 54.13 | 56.29 | 56.83 | a | 50.34 | a | 44.77 | 27.90 | 9.57 | a | 33.25 | |||||||||
2008 | 6.97 | -0.55 | 5.16 | 26.67 | 34.65 | 53.63 | 57.03 | 52.77 | 50.77 | 39.32 | c | 24.61 | b | 0.47 | a | 29.29 | ||||||||||
2009 | -4.32 | 6.11 | 15.28 | b | 29.12 | e | 41.67 | a | 48.69 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.76 | f | ||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | 53.67 | v | 52.55 | a | 58.48 | 56.96 | c | 42.73 | d | 35.00 | e | 23.54 | b | 8.63 | d | 39.70 | e | |
2011 | 0.00 | t | 4.86 | 11.35 | 25.20 | e | 39.07 | b | 50.72 | a | 59.76 | b | 54.29 | 44.77 | 36.60 | a | 24.67 | c | 12.90 | 33.11 | a | |||||
2012 | 6.65 | 10.86 | 28.87 | 28.77 | 44.23 | 53.77 | 58.90 | 52.32 | 41.73 | 32.23 | 22.63 | 16.29 | 33.10 | |||||||||||||
2013 | 4.65 | 2.89 | 10.39 | 25.30 | 40.29 | 51.17 | a | 58.10 | 54.06 | 46.07 | 35.53 | a | 21.30 | -1.55 | 29.02 | |||||||||||
2014 | -7.71 | -8.11 | 0.97 | 23.93 | 40.39 | 53.17 | 50.84 | 52.45 | 42.10 | 33.97 | 13.67 | 11.83 | a | 25.62 | ||||||||||||
2015 | 3.19 | -9.54 | 16.35 | 29.03 | 41.55 | 47.60 | 51.94 | 53.42 | 49.90 | 34.42 | 25.33 | 23.84 | 30.59 | |||||||||||||
2016 | 7.77 | 11.48 | 23.06 | 27.23 | 39.81 | 49.77 | 53.71 | 54.61 | 48.03 | 35.90 | 27.97 | 10.39 | 32.48 | |||||||||||||
2017 | 8.35 | 13.82 | 15.48 | 30.73 | 38.29 | 49.60 | 50.77 | 47.61 | 46.17 | 36.97 | 21.60 | 4.65 | 30.34 | |||||||||||||
2018 | 4.68 | 0.64 | 11.52 | 17.80 | 44.19 | 51.80 | 53.10 | 53.42 | 47.20 | 31.26 | 17.67 | 15.23 | 29.04 | |||||||||||||
2019 | -1.10 | -1.79 | 8.42 | 27.43 | 37.10 | 47.43 | 54.00 | 47.97 | 48.53 | 32.68 | 19.30 | 11.48 | 27.62 | |||||||||||||
2020 | 12.65 | 1.93 | 21.00 | 24.30 | 38.90 | a | 49.40 | 56.39 | 51.81 | 42.07 | 28.10 | 25.97 | 13.87 | 30.53 | ||||||||||||
2021 | 9.65 | -5.89 | 18.71 | 29.93 | 38.23 | 54.23 | 51.42 | 52.45 | 42.33 | 40.06 | 20.07 | 10.52 | 30.14 | |||||||||||||
2022 | -4.23 | -1.46 | 12.26 | 27.00 | 42.81 | 48.27 | 53.87 | 52.03 | 44.30 | 32.58 | 23.87 | 10.42 | 28.48 | |||||||||||||
2023 | 14.03 | 9.68 | 12.77 | 27.50 | 39.84 | 49.77 | 50.47 | a | 49.81 | 49.13 | 36.06 | 22.23 | 22.52 | 31.98 | ||||||||||||
2024 | 14.77 | 14.69 | 19.81 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.42 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.78 | 4.26 | 14.04 | 27.19 | 39.98 | 51.11 | 54.76 | 53.25 | 45.50 | 34.35 | 22.31 | 11.16 | 29.98 | |||||||||||||
S.D. | 6.92 | 6.53 | 5.88 | 2.92 | 3.48 | 2.77 | 2.68 | 2.95 | 2.86 | 3.73 | 4.04 | 5.59 | 1.90 | |||||||||||||
SKEW | 0.08 | -0.04 | 0.10 | -0.65 | -0.02 | 0.44 | 0.16 | 0.10 | 0.16 | 0.75 | -0.41 | -0.27 | -0.07 | |||||||||||||
MAX | 19.10 | 19.14 | 28.87 | 32.87 | 48.26 | 57.07 | 59.76 | 60.39 | 50.77 | 44.77 | 29.97 | 23.84 | 33.25 | |||||||||||||
MIN | -9.42 | -9.54 | 0.97 | 17.80 | 33.17 | 46.38 | 50.47 | 47.42 | 39.54 | 28.10 | 13.50 | -1.97 | 25.62 | |||||||||||||
YRS | 34 | 35 | 36 | 35 | 34 | 34 | 37 | 36 | 36 | 35 | 34 | 36 | 29 |