YELLOWTAIL DAM, MONTANA

Period of Record General Climate Summary - Temperature

Station:(249240) YELLOWTAIL DAM
From Year=1948 To Year=2012
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest
Mean
Year Lowest
Mean
Year >=
90 F
<=
32 F
<=
32 F
<=
0 F
F F F F dd/yyyy
or
yyyymmdd
F dd/yyyy
or
yyyymmdd
F - F - # Days # Days # Days # Days
January 38.3 16.8 27.5 68 16/1974 -30 11/1997 41.2 1986 6.0 1950 0.0 9.2 25.2 6.4
February 43.4 21.6 32.5 72 21/1982 -35 17/2006 42.8 1999 17.5 1989 0.0 5.8 21.9 2.9
March 51.1 27.3 39.2 82 31/2004 -16 04/1989 50.2 1986 25.5 1965 0.0 2.7 20.4 1.0
April 61.3 36.3 48.8 89 21/1980 7 02/2002 56.5 1987 39.5 1975 0.0 0.3 9.5 0.0
May 70.7 44.6 57.6 98 13/2001 21 04/1967 63.2 1994 51.1 2011 0.9 0.0 1.5 0.0
June 80.0 52.5 66.2 106 26/2012 31 13/1969 76.8 1988 57.5 1951 5.4 0.0 0.1 0.0
July 90.2 58.6 74.4 109 14/2002 40 04/1972 80.4 2007 65.9 1993 18.2 0.0 0.0 0.0
August 89.5 57.1 73.3 107 07/1949 35 23/2008 80.1 1983 68.0 1987 17.2 0.0 0.0 0.0
September 77.6 47.7 62.7 104 05/1950 22 18/1965 70.0 1998 49.6 1965 4.7 0.0 1.2 0.0
October 64.5 38.8 51.7 94 04/1963 -7 30/1991 58.0 1963 41.3 1969 0.2 0.5 7.0 0.0
November 49.5 28.4 38.9 78 12/1999 -14 21/1977 50.2 1949 20.9 1985 0.0 3.4 18.3 0.7
December 40.6 19.8 30.2 72 27/1980 -28 22/1989 40.1 1999 11.3 1983 0.0 7.6 25.2 3.5
Annual 63.1 37.5 50.3 109 20020714 -35 20060217 53.9 1999 47.5 1978 46.6 29.5 130.3 14.5
Winter 40.8 19.4 30.1 72 19801227 -35 20060217 39.7 1992 17.4 1949 0.0 22.6 72.3 12.8
Spring 61.0 36.1 48.5 98 20010513 -16 19890304 54.3 1992 42.2 1975 0.9 3.0 31.4 1.0
Summer 86.6 56.1 71.3 109 20020714 31 19690613 76.1 2012 66.3 1951 40.8 0.0 0.1 0.0
Fall 63.9 38.3 51.1 104 19500905 -14 19771121 56.6 1963 44.2 1985 4.9 3.8 26.6 0.7
Table updated on Oct 31, 2012
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