SUMMIT 1 W, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(398116) SUMMIT 1 W
From Year=1956 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 1 29 170 475 734 926 873 558 241 28 1 4037
40 S 0 1 31 201 676 1410 2336 3210 3768 4009 4037 4037 4037
45 M 0 0 13 95 334 584 771 718 414 144 10 0 3084
45 S 0 0 13 108 442 1026 1797 2516 2930 3074 3084 3084 3084
50 M 0 0 5 47 210 436 616 564 282 76 3 0 2238
50 S 0 0 5 52 262 698 1314 1878 2160 2235 2238 2238 2238
55 M 0 0 2 20 114 294 462 410 171 34 1 0 1506
55 S 0 0 2 21 135 428 890 1300 1471 1505 1506 1506 1506
60 M 0 0 1 7 50 169 311 266 90 12 0 0 906
60 S 0 0 1 7 57 227 538 803 894 906 906 906 906
Corn Growing Degree Days
50 M 0 1 23 120 293 458 604 563 346 156 21 1 2585
50 S 0 2 24 144 436 895 1498 2061 2408 2563 2584 2585 2585
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