STEPHAN 2 NW, SOUTH DAKOTA

Period of Record General Climate Summary - Temperature

Station:(397992) STEPHAN
From Year=1903 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 25.8 2.2 14.0 65 24/1981 -43 12/1912 30.2 2006 0.0 1978 0.0 19.2 30.6 14.0
February 31.1 7.7 19.4 72 23/2000 -40 09/1994 33.3 1999 7.3 1910 0.0 14.2 27.8 9.0
March 43.6 18.6 31.1 85 21/1910 -25 04/1960 45.5 1910 15.8 1960 0.0 7.0 28.1 3.2
April 59.4 31.1 45.3 99 21/1980 -1 01/1975 52.8 1915 37.9 1907 0.2 0.6 17.0 0.0
May 70.3 42.3 56.3 103 27/1969 13 02/1967 64.6 1977 48.5 1907 0.9 0.0 4.4 0.0
June 80.2 52.8 66.5 110 24/1988 29 02/1964 76.0 1988 60.1 1985 4.5 0.0 0.1 0.0
July 87.3 58.3 72.8 111 09/1976 32 29/1964 79.0 1974 65.2 1992 12.2 0.0 0.0 0.0
August 86.1 56.0 71.1 112 13/1965 31 10/1985 78.8 1983 64.3 1985 11.1 0.0 0.0 0.0
September 76.3 46.1 61.2 107 02/1983 17 30/1974 69.1 1998 49.7 1965 3.9 0.0 2.2 0.0
October 62.1 33.1 47.5 95 02/1997 -7 22/1917 53.2 1910 38.3 2009 0.2 0.3 14.4 0.0
November 44.9 19.8 32.3 82 01/1990 -22 14/1959 41.6 1917 18.0 1985 0.0 5.8 26.7 1.6
December 30.4 7.7 19.0 70 01/1998 -38 29/1917 29.2 1979 0.6 1983 0.0 15.9 30.5 9.0
Annual 58.1 31.3 44.7 112 19650813 -43 19120112 49.4 1987 41.3 1917 32.9 63.1 181.9 36.8
Winter 29.1 5.8 17.5 72 20000223 -43 19120112 28.5 1987 7.8 1978 0.0 49.3 89.0 32.0
Spring 57.8 30.7 44.2 103 19690527 -25 19600304 50.3 1977 38.4 1960 1.1 7.7 49.5 3.2
Summer 84.6 55.7 70.1 112 19650813 29 19640602 75.7 1988 64.4 1915 27.7 0.0 0.1 0.0
Fall 61.1 33.0 47.0 107 19830902 -22 19591114 51.3 1998 40.8 1985 4.1 6.1 43.3 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