KEYSTONE, SOUTH DAKOTA

Period of Record General Climate Summary - Temperature

Station:(394556) KEYSTONE
From Year=1990 To Year=1997
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 35.1 9.8 22.5 64 12/1996 -24 31/1996 31.0 1992 16.9 1996 0.0 12.1 30.0 8.4
February 40.5 14.0 27.2 70 21/1995 -32 02/1996 35.2 1992 17.5 1993 0.0 7.6 27.4 4.4
March 46.3 20.7 33.5 76 20/1997 -17 08/1996 37.3 1992 25.5 1996 0.0 5.4 28.1 1.9
April 52.0 27.9 40.0 80 18/1994 2 08/1997 42.6 1992 36.3 1997 0.0 2.6 21.1 0.0
May 62.8 38.7 50.7 92 20/1992 23 03/1997 54.7 1994 47.4 1995 0.1 0.0 6.4 0.0
June 72.4 47.5 60.0 91 26/1991 32 09/1995 62.9 1991 56.4 1993 0.6 0.0 0.1 0.0
July 76.6 50.9 63.8 96 11/1995 38 03/1992 66.6 1991 59.9 1992 1.6 0.0 0.0 0.0
August 78.8 51.0 64.9 94 26/1991 33 30/1992 68.3 1995 60.4 1992 3.0 0.0 0.0 0.0
September 70.6 41.9 56.2 92 10/1994 21 22/1995 60.5 1990 50.5 1993 0.4 0.0 3.4 0.0
October 57.9 30.1 44.0 85 02/1992 -4 30/1991 45.9 1992 42.2 1993 0.0 1.0 18.3 0.3
November 43.3 19.4 31.3 72 01/1990 -12 25/1993 37.9 1990 25.7 1996 0.0 6.6 29.1 1.0
December 38.1 11.7 24.9 67 12/1993 -31 22/1990 30.5 1991 17.4 1990 0.0 8.4 30.6 5.0
Annual 56.2 30.3 43.2 96 19950711 -32 19960202 44.7 1991 41.0 1993 5.7 43.7 194.7 21.0
Winter 37.9 11.8 24.9 70 19950221 -32 19960202 32.2 1992 18.9 1993 0.0 28.1 88.0 17.9
Spring 53.7 29.1 41.4 92 19920520 -17 19960308 44.7 1992 38.1 1996 0.1 8.0 55.7 1.9
Summer 75.9 49.8 62.9 96 19950711 32 19950609 65.6 1991 59.2 1992 5.1 0.0 0.1 0.0
Fall 57.2 30.5 43.9 92 19940910 -12 19931125 47.2 1990 40.6 1993 0.4 7.6 50.8 1.3
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