FLANDREAU, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(392984) FLANDREAU
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 2 42 213 527 792 979 914 612 289 41 1 4413
40 S 0 3 45 257 784 1576 2555 3469 4081 4370 4412 4413 4413
45 M 0 0 19 125 381 642 824 759 466 180 15 0 3413
45 S 0 0 19 144 525 1168 1992 2751 3218 3398 3413 3413 3413
50 M 0 0 7 66 252 493 669 604 330 99 4 0 2524
50 S 0 0 7 73 325 818 1487 2092 2421 2520 2524 2524 2524
55 M 0 0 2 31 147 350 514 450 211 45 1 0 1751
55 S 0 0 2 33 180 530 1044 1495 1705 1750 1751 1751 1751
60 M 0 0 1 11 74 219 362 302 119 16 0 0 1105
60 S 0 0 1 12 86 306 667 970 1089 1105 1105 1105 1105
Corn Growing Degree Days
50 M 1 3 36 147 324 498 641 593 385 195 36 2 2860
50 S 1 4 40 187 511 1009 1650 2243 2627 2822 2858 2860 2860
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