YELLOWTAIL DAM, MONTANA

Period of Record General Climate Summary - Precipitation

Station:(249240) YELLOWTAIL DAM
From Year=1948 To Year=2006
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >=
0.01 in.		 >=
0.10 in.		 >=
0.50 in.		 >=
1.00 in.		 Mean High Year
in. in. - in. - in. dd/yyyy
or
yyyymmdd		 # Days # Days # Days # Days in. in. -
January 0.89 2.36 1963 0.12 1990 0.84 05/1969 7 3 0 0 8.6 38.6 1963
February 0.74 2.05 2003 0.00 1969 1.25 29/2004 6 2 0 0 6.0 21.0 1952
March 1.29 3.05 1973 0.17 1978 1.07 08/1970 9 4 0 0 5.5 17.9 1965
April 2.17 7.46 1963 0.30 1952 3.21 26/1964 9 5 1 0 2.7 17.5 1967
May 2.84 9.28 1978 0.12 1998 5.00 07/1988 10 6 2 1 0.1 2.0 1967
June 2.55 7.81 1992 0.58 1971 2.50 09/1964 10 6 1 1 0.0 0.0 1949
July 1.36 5.22 1981 0.01 1964 4.56 25/1981 6 3 1 0 0.0 0.0 1948
August 1.03 3.55 1965 0.00 2001 2.34 29/1964 5 3 0 0 0.0 0.0 1948
September 1.75 5.13 1991 0.09 1964 2.11 18/1978 7 4 1 0 0.1 4.5 1965
October 1.64 6.14 1971 0.05 1948 2.39 31/1974 6 4 1 0 0.7 9.1 2002
November 0.92 2.41 1968 0.11 1949 1.09 09/1978 6 3 0 0 3.1 15.1 1964
December 0.78 2.51 1989 0.05 2001 0.79 29/1972 7 3 0 0 6.6 18.1 1967
Annual 17.95 27.98 1978 9.28 2001 5.00 19880507 88 46 9 2 33.3 86.2 1967
Winter 2.40 4.77 1978 0.35 1992 1.25 20040229 20 8 1 0 21.2 48.3 1968
Spring 6.30 15.12 1978 2.62 2001 5.00 19880507 28 16 3 1 8.2 30.7 1967
Summer 4.94 11.27 1992 1.16 1988 4.56 19810725 22 11 3 1 0.0 0.0 1949
Fall 4.30 10.06 1971 0.79 1948 2.39 19741031 19 11 3 0 3.9 15.4 2003
Table updated on Jul 28, 2006
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov. 






Western Regional Climate Center, wrcc@dri.edu