SISSETON, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(397742) SISSETON 1 E
From Year=1900 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 1 3 38 208 544 797 1001 940 615 303 44 3 4497
40 S 1 4 42 250 794 1591 2592 3532 4147 4451 4495 4497 4497
45 M 0 1 16 122 398 648 846 785 468 188 17 1 3489
45 S 0 1 16 138 536 1183 2029 2814 3283 3471 3489 3489 3489
50 M 0 0 6 63 264 499 691 630 329 103 5 0 2591
50 S 0 0 6 70 333 832 1523 2153 2482 2585 2590 2591 2591
55 M 0 0 2 28 153 354 536 476 208 47 1 0 1806
55 S 0 0 2 31 184 538 1073 1549 1758 1805 1806 1806 1806
60 M 0 0 1 10 76 221 382 326 116 18 0 0 1151
60 S 0 0 1 11 87 308 690 1016 1132 1150 1151 1151 1151
Corn Growing Degree Days
50 M 1 2 28 139 329 502 658 609 377 188 31 2 2866
50 S 1 3 31 170 499 1001 1659 2268 2645 2833 2864 2866 2866
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