IPSWICH, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(394206) IPSWICH
From Year=1894 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 2 37 202 510 775 987 931 595 262 32 1 4334
40 S 1 3 39 241 751 1526 2513 3444 4039 4301 4333 4334 4334
45 M 0 0 14 114 366 625 832 776 450 156 10 0 3343
45 S 0 0 14 129 494 1119 1952 2727 3178 3333 3343 3343 3343
50 M 0 0 5 57 236 476 677 621 314 79 2 0 2468
50 S 0 0 5 62 298 774 1451 2072 2387 2466 2468 2468 2468
55 M 0 0 1 24 133 332 522 466 197 33 0 0 1709
55 S 0 0 1 25 158 490 1013 1479 1676 1709 1709 1709 1709
60 M 0 0 0 7 64 201 369 317 107 11 0 0 1076
60 S 0 0 0 8 71 273 642 959 1066 1076 1076 1076 1076
Corn Growing Degree Days
50 M 2 5 39 156 326 486 634 592 382 193 37 3 2855
50 S 2 6 45 201 527 1014 1647 2240 2622 2815 2851 2855 2855
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