YELLOWSTONE PK MAMMOTH, WYOMING

Period of Record General Climate Summary - Temperature

Station:(489905) YELLOWSTONE PARK
From Year=1894 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 29.2 10.5 19.9 52 25/2005 -36 29/1951 29.6 1953 3.7 1949 0.0 17.8 30.3 6.4
February 33.2 12.3 22.8 56 22/1995 -35 03/1899 31.6 1991 10.8 1899 0.0 11.5 27.3 4.8
March 39.4 17.5 28.5 66 20/1999 -25 11/1956 38.7 1986 19.5 1897 0.0 7.0 29.0 2.7
April 49.5 26.2 37.9 78 28/1987 -4 03/1945 45.0 1987 28.3 1975 0.0 1.2 23.3 0.1
May 60.1 34.2 47.1 86 29/2003 6 02/1950 54.0 1897 41.7 1896 0.0 0.0 11.8 0.0
June 68.9 41.1 54.9 92 21/1900 20 05/1901 63.2 1988 48.2 1951 0.1 0.0 2.3 0.0
July 79.9 47.0 63.5 99 14/2002 21 14/1976 72.2 2007 54.6 1993 1.9 0.0 0.2 0.0
August 78.6 45.5 62.1 97 15/2003 24 31/1968 68.2 1894 57.0 1899 1.0 0.0 0.4 0.0
September 67.6 37.6 52.6 92 03/1950 0 22/1895 58.9 1990 45.1 1961 0.1 0.1 6.9 0.0
October 55.0 29.6 42.3 82 03/2010 -8 30/1991 48.7 1988 32.8 2009 0.0 0.9 19.8 0.1
November 38.7 19.8 29.3 66 05/1975 -27 28/1896 38.3 1999 18.2 1896 0.0 7.6 26.7 1.6
December 30.3 12.6 21.4 52 16/1962 -35 22/1990 28.0 1950 9.0 1990 0.0 16.9 30.1 4.5
Annual 52.5 27.8 40.2 99 20020714 -36 19510129 42.4 2005 36.3 1948 3.1 62.8 208.1 20.0
Winter 30.9 11.8 21.4 56 19950222 -36 19510129 26.8 1958 11.0 1949 0.0 46.1 87.7 15.6
Spring 49.7 26.0 37.8 86 20030529 -25 19560311 44.5 1992 31.8 1975 0.0 8.2 64.1 2.7
Summer 75.8 44.5 60.2 99 20020714 20 19010605 64.4 2006 55.1 1993 3.0 0.0 2.8 0.0
Fall 53.8 29.0 41.4 92 19500903 -27 18961128 46.5 1963 35.4 1985 0.1 8.5 53.4 1.6
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