DE SMET, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(392302) DE SMET
From Year=1893 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 3 46 232 543 814 1019 956 632 298 40 1 4586
40 S 0 4 50 282 825 1639 2658 3614 4247 4545 4585 4586 4586
45 M 0 1 21 141 397 664 864 801 486 186 14 0 3575
45 S 0 1 21 162 559 1223 2087 2888 3374 3560 3574 3575 3575
50 M 0 0 8 75 265 515 709 646 347 101 3 0 2671
50 S 0 0 8 83 348 863 1573 2219 2566 2667 2670 2671 2671
55 M 0 0 2 34 156 370 555 492 225 45 1 0 1880
55 S 0 0 2 36 192 562 1117 1609 1834 1879 1880 1880 1880
60 M 0 0 1 12 77 236 401 340 129 16 0 0 1213
60 S 0 0 1 13 90 326 727 1068 1197 1213 1213 1213 1213
Corn Growing Degree Days
50 M 1 4 38 156 333 517 671 624 394 192 32 2 2962
50 S 1 5 43 199 531 1048 1719 2343 2737 2929 2961 2962 2962
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