WEST YELLOWSTONE, st

Monthly Precipitation - Daily Extreme (inches)

(248857)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201212
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1924 0.25 a 0.60 0.40 a 0.40 0.40 0.60 1.40 0.68 0.52 c 0.92 c 0.46 c 0.37 b 1.40
1925 0.32 c 0.60 d 0.77 f 0.42 b 0.32 f 2.70 p 0.34 0.65 0.75 a 0.56 0.45 b 0.38 b 2.70
1926 0.20 e 0.30 d 0.24 b 1.38 f 0.45 0.19 b 0.25 0.48 0.75 b 0.55 0.44 0.24 g 1.38
1927 0.59 d 0.80 i 0.41 f 0.38 j 0.83 c 0.55 0.24 0.46 a 1.05 0.86 a 1.22 0.50 c 1.22
1928 0.28 g 0.12 l 0.60 0.45 e 0.28 0.88 a 0.47 b 0.30 0.12 a 0.73 a 0.45 a 0.29 0.88
1929 0.50 k 0.60 c 0.14 d 0.25 c 0.44 d 0.31 0.17 0.14 0.30 g 0.71 b 0.20 0.94 0.94
1930 0.29 0.17 f 0.28 f 0.23 d 9999.00 z 0.38 0.26 0.84 0.55 0.83 0.34 0.31 e 0.84
1931 0.13 c 0.80 c 0.50 j 0.14 0.15 o 9999.00 z 0.25 a 0.40 0.60 n 0.43 b 0.51 a 0.65 b 0.80
1932 1.68 j 0.80 k 0.45 a 0.47 0.40 c 0.96 c 1.37 d 0.32 0.11 0.28 a 0.41 0.35 a 1.68
1933 0.52 a 0.34 a 0.13 0.20 0.38 b 0.52 b 0.29 b 0.56 0.70 0.25 0.64 0.50 0.70
1934 0.60 0.20 0.28 0.40 0.58 a 1.02 0.12 0.32 0.73 0.49 0.29 0.35 1.02
1935 0.47 0.71 0.61 0.67 0.80 0.22 0.04 0.14 0.17 0.41 0.60 0.33 a 0.80
1936 0.63 0.72 b 0.38 f 0.71 0.22 0.91 0.27 1.26 0.23 a 0.30 0.40 b 0.41 c 1.26
1937 0.70 g 1.65 g 0.88 f 0.80 j 0.38 b 0.94 a 0.88 0.72 a 1.05 a 0.35 c 0.26 c 0.85 d 1.65
1938 0.34 g 0.53 f 1.02 f 0.25 a 0.40 1.17 a 0.75 0.15 0.07 b 1.68 0.36 0.24 1.68
1939 0.46 b 0.42 d 0.24 b 0.35 0.42 g 0.44 a 0.41 0.06 0.13 0.48 a 0.00 0.41 0.48
1940 0.34 a 1.18 d 0.63 a 0.50 0.37 0.99 b 0.53 a 0.46 1.04 a 0.53 0.46 0.69 1.18
1941 0.45 f 0.58 f 0.96 b 0.85 a 0.66 d 0.69 0.21 0.45 0.51 f 0.92 0.55 1.56 1.56
1942 0.93 0.29 0.13 0.39 0.59 0.75 0.21 0.25 0.52 0.35 0.78 0.45 0.93
1943 1.66 0.50 0.62 0.65 1.36 0.63 a 0.40 0.42 0.48 0.75 0.49 f 0.22 1.66
1944 0.35 0.62 0.54 0.15 0.63 0.77 0.18 0.07 0.98 0.37 0.76 0.27 0.98
1945 0.34 0.59 0.32 0.42 1.47 0.83 0.35 0.89 1.12 0.16 0.35 b 0.42 1.47
1946 0.53 0.39 0.92 0.19 0.82 0.27 0.22 0.33 0.33 0.88 0.66 b 0.42 0.92
1947 0.20 0.19 a 0.42 j 0.38 s 9999.00 z 0.74 a 0.63 0.87 0.76 0.26 0.05 0.04 0.87
1948 0.13 0.11 a 9999.00 z 0.31 i 0.23 a 0.35 a 0.33 a 0.20 0.64 0.43 0.59 0.30 0.64
1949 0.31 0.49 a 9999.00 z 0.21 0.27 0.22 0.06 0.27 0.54 0.51 0.51 b 0.29 0.54
1950 0.46 a 0.27 0.29 0.35 0.54 0.73 0.88 0.52 0.77 0.99 0.41 0.78 0.99
1951 0.48 0.35 0.54 0.35 0.34 a 0.98 1.37 1.36 0.00 1.43 0.54 1.00 1.43
1952 0.80 0.57 0.39 0.10 0.86 1.33 0.68 0.26 0.13 0.10 0.29 0.58 1.33
1953 0.39 0.60 0.65 0.35 1.08 0.53 0.71 0.26 0.19 0.23 0.36 0.49 1.08
1954 0.25 0.21 0.47 0.96 0.35 1.25 0.43 0.17 0.19 0.23 0.36 0.78 1.25
1955 0.53 0.35 0.48 0.42 0.55 0.34 1.29 0.47 0.24 0.43 0.89 0.82 1.29
1956 0.50 0.37 0.31 0.59 0.42 0.18 0.43 0.10 0.43 0.60 0.55 0.60 0.60
1957 1.25 0.75 0.55 0.26 0.68 0.55 0.60 0.31 0.31 0.75 0.22 0.34 1.25
1958 0.28 0.60 0.34 0.49 0.64 0.55 0.56 0.50 0.87 0.23 0.72 0.24 0.87
1959 0.61 0.53 0.50 0.35 0.81 0.58 0.57 0.33 0.82 0.36 0.30 0.39 0.82
1960 0.49 0.53 0.32 0.60 0.45 0.45 0.12 0.73 0.16 0.67 0.61 0.29 0.73
1961 0.11 0.48 0.27 0.82 0.49 0.63 0.16 0.59 1.13 1.46 0.48 0.61 1.46
1962 1.01 1.05 0.37 0.49 0.33 0.40 0.81 0.40 0.61 0.26 0.85 0.46 1.05
1963 0.45 0.80 0.54 0.74 0.88 0.68 0.29 0.37 0.78 0.78 0.65 0.29 0.88
1964 0.54 0.17 0.45 0.64 0.45 0.65 0.35 0.79 0.17 1.05 0.75 0.57 1.05
1965 1.30 0.23 0.31 0.82 0.63 1.12 0.71 0.70 0.57 0.12 0.39 0.74 1.30
1966 0.29 0.31 0.47 0.13 0.91 0.48 0.38 0.18 0.79 0.43 0.87 0.67 0.91
1967 1.00 0.32 1.08 0.48 0.79 0.36 0.71 0.13 0.70 1.27 0.60 0.26 1.27
1968 0.91 0.18 0.21 0.53 0.52 0.93 0.18 1.03 0.54 0.44 0.45 0.50 1.03
1969 0.87 0.47 0.32 0.20 0.26 0.43 0.30 0.18 0.33 0.47 0.68 0.49 0.87
1970 0.38 0.37 0.78 0.54 0.44 0.66 0.56 0.43 1.10 0.41 0.66 0.56 1.10
1971 0.66 0.40 0.55 0.94 0.49 0.52 0.43 1.24 0.54 0.90 0.39 0.52 1.24
1972 0.38 0.28 0.78 0.40 0.35 0.85 0.55 0.36 0.96 0.61 0.18 0.48 0.96
1973 0.22 0.38 0.30 0.39 0.48 0.88 0.95 0.75 0.54 0.54 0.68 0.32 0.95
1974 0.52 0.12 s 0.49 g 0.24 0.35 0.30 0.38 0.43 0.05 0.58 0.16 0.27 0.58
1975 0.35 0.41 0.55 0.41 0.42 1.27 0.37 0.37 0.05 0.86 0.38 0.54 1.27
1976 0.36 0.45 0.40 0.35 1.13 1.02 0.32 0.56 0.99 0.29 0.08 0.20 1.13
1977 0.36 0.15 0.33 0.23 0.33 0.61 0.58 0.82 0.61 0.23 0.26 0.62 0.82
1978 0.43 0.52 0.13 0.24 0.37 b 0.82 0.49 0.38 0.84 0.00 0.26 0.40 q 0.84
1979 0.24 0.50 c 9999.00 z 0.00 x 0.57 0.56 0.26 0.96 0.10 0.44 0.33 0.16 0.96
1980 0.38 9999.00 z 0.82 0.33 x 1.07 0.88 0.49 0.96 0.70 0.29 0.25 0.65 1.07
1981 0.12 0.29 0.14 0.54 0.73 0.35 0.49 0.06 0.58 0.36 0.46 0.60 0.73
1982 0.48 d 0.33 1.09 0.95 0.43 0.42 0.73 0.12 0.57 0.35 0.72 0.63 1.09
1983 0.29 0.44 b 0.33 0.27 0.36 0.50 0.80 0.76 1.41 0.70 0.59 a 0.50 1.41
1984 0.11 0.34 a 0.41 a 0.42 0.50 c 0.51 0.65 0.51 0.74 0.53 0.58 0.31 0.74
1985 0.12 a 0.87 0.79 0.31 0.57 0.17 1.34 0.16 0.70 1.00 1.46 A 0.50 1.34
1986 0.28 0.49 0.78 1.18 0.16 0.86 0.71 2.32 9999.00 z 0.19 0.68 0.04 2.32
1987 0.42 0.33 0.54 0.22 0.53 0.67 1.18 0.40 0.16 0.01 0.13 0.28 1.18
1988 0.42 0.36 0.47 0.64 0.83 0.24 0.40 0.04 0.28 0.21 1.49 0.41 1.49
1989 1.16 0.25 0.78 0.35 h 0.51 0.42 0.51 0.48 0.90 0.80 f 0.33 e 0.12 b 1.16
1990 0.88 0.63 0.28 0.24 0.53 0.71 0.54 0.20 0.31 0.66 0.62 a 0.48 0.88
1991 0.18 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.34 0.68 0.96 A 0.34 0.90 0.90
1992 0.12 0.48 0.27 0.36 0.52 0.86 0.44 0.35 A 0.52 0.80 0.42 1.22 A 0.86
1993 0.62 l 0.39 k 0.51 0.54 1.09 0.72 0.80 0.53 0.16 0.23 0.32 0.36 f 1.09
1994 0.30 0.49 A 0.82 0.46 0.46 0.76 A 0.36 0.17 0.31 0.64 0.64 1.44 1.44
1995 0.81 0.20 1.03 1.01 0.40 0.94 1.09 0.50 0.15 A 0.38 0.68 0.74 b 1.09
1996 0.45 a 0.29 a 0.77 b 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.77
1997 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1998 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1999 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2000 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2001 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2002 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2003 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2004 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2005 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2006 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2007 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2008 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2009 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2010 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
2011 0.00 z 9999.00 z 0.00 z 9999.00 z 9999.00 z 0.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.00 z 9999.00 z 0.00
2012 0.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.16 z 9999.00 z 0.68 z 0.68
Period of Record Statistics
MEAN 0.49 0.45 0.50 0.46 0.57 0.65 0.53 0.49 0.55 0.56 0.49 0.51 1.06
S.D. 0.32 0.21 0.25 0.24 0.27 0.29 0.33 0.37 0.33 0.34 0.25 0.28 0.23
SKEW 1.45 1.04 0.63 0.93 1.27 0.31 1.07 2.05 0.22 1.02 1.06 1.43 0.17
MAX 1.66 1.18 1.09 1.18 1.47 1.33 1.40 2.32 1.41 1.68 1.49 1.56 1.49
MIN 0.11 0.11 0.13 0.10 0.16 0.17 0.04 0.04 0.00 0.00 0.00 0.04 0.60
NO YRS 66 62 60 63 66 68 71 71 67 71 70 69 40