SIOUX FALLS FOSS FLD, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(397667) SIOUX FALLS WSFO
From Year=1948 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 0 5 55 242 570 849 1050 975 643 307 49 2 4748
40 S 0 5 60 303 873 1722 2772 3747 4391 4698 4746 4748 4748
45 M 0 1 26 146 420 699 895 820 496 193 19 0 3715
45 S 0 1 27 173 593 1292 2187 3007 3503 3696 3715 3715 3715
50 M 0 0 11 79 283 550 740 665 355 107 5 0 2794
50 S 0 0 11 90 372 922 1662 2327 2683 2789 2794 2794 2794
55 M 0 0 4 38 167 403 585 511 230 50 1 0 1987
55 S 0 0 4 41 208 611 1196 1706 1936 1986 1987 1987 1987
60 M 0 0 1 16 85 264 431 358 129 20 0 0 1304
60 S 0 0 1 17 102 366 796 1154 1283 1303 1304 1304 1304
Corn Growing Degree Days
50 M 2 6 43 161 347 545 700 642 400 199 41 3 3089
50 S 2 8 51 212 559 1104 1804 2446 2846 3045 3086 3089 3089
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu